Journal articles on the topic 'Wireless gas sensor'
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1
Qin, Song, Bao Cai Zhang, Dong Wei, Lu Qu, and Nan Wan Qiu. "Research and Development of Thin Film Gas Sensor and its GPRS Wireless Sensor Based on Internet of Things." Advanced Materials Research 301-303 (July 2011): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.503.
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Wireless sensor network is a new area of research in the computer science and technology. In response to the demand for a variety of network sensors, this paper describes thin film gas sensors and wireless sensor development, puts forword the manu facturing technology of producing thin film gas sensor with reactive powder doped sputtering method, discusses properties related to gas sensing.and power consumption. And introduces how thin film gas sensor chip and its related GPRS wireless sensor in order to lay the foundation for their application in Internet of Things.
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Hong, Mei. "Key Technology of Electronic Nose Gas Recognizer Based on Wireless Sensor Networks." International Journal of Online Engineering (iJOE) 14, no. 10 (October 26, 2018): 68. http://dx.doi.org/10.3991/ijoe.v14i10.9304.
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<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: DE; mso-ansi-language: EN-US; mso-bidi-language: AR-SA;">Electronic nose gas recognizer is a kind of instrument simulating biological olfactory function for gas detection, which is widely applied in underground construction, aerospace, medical treatment and other fields. The sensing mechanism of the wireless sensor is complex. The wireless sensor array can realize the cross-response of the mixed gas, as well as data acquisition, processing and transmission by wireless transmission. This study applies the wireless sensor array to the electronic nose gas recognition technology, and conducts detection and recognition of three kinds of volatile gas, as well as analyzes the transient response of four wireless sensors and the transient response of wireless sensor array. It is found that the transient response curves are related to the characteristics and sample properties of wireless sensors, but not directly related to sample components. The whole transient response process includes four processes, namely steady state, rising process, maximum response and falling process. The response curve change of wireless sensor array to engine oil volatile gas is similar to that of diesel oil, but the conductance value is smaller than that of diesel oil gas response curve.</span>
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Guo, Tao, Tianhao Zhou, Qiulin Tan, Qianqian Guo, Fengxiang Lu, and Jijun Xiong. "A Room-Temperature CNT/Fe3O4 Based Passive Wireless Gas Sensor." Sensors 18, no. 10 (October 19, 2018): 3542. http://dx.doi.org/10.3390/s18103542.
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A carbon nanotube/Fe3O4 thin film-based wireless passive gas sensor with better performance is proposed. The sensitive test mechanism of LC (Inductance and capacitance resonant) wireless sensors is analyzed and the reason for choosing Fe3O4 as a gas sensing material is explained. The design and fabrication process of the sensor and the testing method are introduced. Experimental results reveal that the proposed carbon nanotube (CNT)/Fe3O4 based sensor performs well on sensing ammonia (NH3) at room temperature. The sensor exhibits not only an excellent response, good selectivity, and fast response and recovery times at room temperature, but is also characterized by good repeatability and low cost. The results for the wireless gas sensor’s performance for different NH3 gas concentrations are presented. The developed device is promising for the establishment of wireless gas sensors in harsh environments.
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Pan, Yong, Qin Molin, Tengxiao Guo, Lin Zhang, Bingqing Cao, Junchao Yang, Wen Wang, and Xufeng Xue. "Wireless passive surface acoustic wave (SAW) technology in gas sensing." Sensor Review 41, no. 2 (March 22, 2021): 135–43. http://dx.doi.org/10.1108/sr-03-2020-0061.
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Purpose This paper aims to give an overview about the state of wireless passive surface acoustic wave (SAW) gas sensor used in the detection of chemical vapor. It also discusses a variety of different architectures including delay line and array sensor for gas detection, and it is considered that this technology has a good application prospect. Design/methodology/approach The authors state the most of the wireless passive SAW methods used in gas sensing, such as CO2, CO, CH4, C2H4, NH3, NO2, et al., the sensor principles, design procedures and technological issues are discussed in detail; their advantages and disadvantages are also summarized. In conclusion, it gives a prospect of wireless passive SAW sensor applications and proposes the future research field might lie in the studying of many kinds of harmful gases. Findings In this paper, the authors will try to cover most of the important methods used in gas sensing and their recent developments. Although wireless passive SAW sensors have been used successfully in harsh environments for the monitoring of temperature or pressure, the using in chemical gases are seldom reported. This review paper gives a survey of the present state of wireless passive SAW sensor in gas detection and suggests new and exciting perspectives of wireless passive SAW gas sensor technology. Research limitations/implications The authors will review most of the methods used in wireless passive SAW sensor and discuss the current research status and development trend; the potential application in future is also forecasted. Originality/value The authors will review most of the methods used in wireless passive SAW sensor and discuss the current research status and development trend; the potential application in future is also forecasted.
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Tan, Qiulin, Mingliang Yang, Tao Luo, Wei Liu, Chao Li, Chenyang Xue, Jun Liu, Wendong Zhang, and Jijun Xiong. "A Novel Interdigital Capacitor Pressure Sensor Based on LTCC Technology." Journal of Sensors 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/431503.
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A novel passive wireless pressure sensor is proposed based on LTCC (low temperature cofired ceramic) technology. The sensor employs a passive LC circuit, which is composed of a variable interdigital capacitor and a constant inductor. The inductor and capacitor were fabricated by screen-printing. Pressure measurement is tested using a wireless mutual inductance coupling method. The experimental sensitivity of the sensor is about 273.95 kHz/bar below 2 bar. Experimental results show that the sensor can be read out wirelessly by external antenna at 600°C. The max readout distance is 3 cm at room temperature. The sensors described can be applied for monitoring of gas pressure in harsh environments, such as environment with high temperature and chemical corrosion.
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Sharma, Rajat, and Jishaan Sayyed. "A Detail Analysis of IoT Gas Detection System for Wireless Sensor Networks." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 624–28. http://dx.doi.org/10.22214/ijraset.2022.41261.
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Abstract: The Internet of Things (IoT) is basically a network that connects computing devices. IoT is capable of sending massive amounts of data via a network without the need for human intervention. Cloud services are used to manage this real-time data, which is backed up by strong computing software and hardware. This information is gathered through a variety of sensors placed around the user's environment. IoT is the future of computation, and it will have a significant impact on our daily life. In this research, we offer a wireless sensor network driven by the Internet of Things for gas detection. Using many sensors connected by IoT, these detectors can detect burnable, flammable, and toxic gases, as well as oxygen usage. This method is extremely adaptable when it comes to wirelessly accessing remote devices all across the world. Less power consumption and computational cost are advantages of this technology. Furthermore, it aids in the construction of open and compact stack sizes. Keywords: Wireless, Sensor, Communication, Network, IOT.
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Song, Zhilong, and Zhiyong Fan. "Wireless Self-Powered High-Performance Integrated Nanostructured-Gas-Sensor Network for Future Smart Homes." ECS Meeting Abstracts MA2022-02, no. 36 (October 9, 2022): 1322. http://dx.doi.org/10.1149/ma2022-02361322mtgabs.
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The accelerated evolution of communication platforms including Internet of Things (IoT) and the 5th generation (5G) wireless communication network makes it possible to build intelligent gas sensor networks to monitor the chemical safety of our surroundings and personal health in real time. However, this application scenario requires a very challenging combination of characteristics of gas sensors including small formfactor, low-cost, ultra-low power consumption, superior sensitivity, and high intelligence. Herein, we demonstrate self-powered integrated nanostructured-gas-sensor (SINGOR) systems and a wirelessly connected SINGOR network for the first time. The SINGOR features ultra-high sensitivity to H2, formaldehyde, toluene, and acetone with the record low limits of detection (LOD) of 10 ppb, 2 ppb, 1 ppb and 1 ppb, respectively, obtained under room temperature sensor operation. Therefore, ultra-low power consumption of 68.6 μW at sensor level and 1.71 mW at the system level has been achieved. As the result, an individual SINGOR system can be self-driven by indoor light with a Si solar cell. Furthermore, each SINGOR consists of an array of nanostructured sensors powered by machine learning algorithm and thus a SINGOR has the capability of gas pattern recognition and classification. And multiple SINGOR systems are wirelessly connected together to form a sensor network for smart home application demonstrations. Intriguingly, the sensor network has successfully demonstrated flammable gas leakage detection and alarm function when they are deployed in multiple rooms. And when the SINGOR network is deployed in one single room, it can achieve gas leakage localization with satisfactory precision. These successes open up the possibility of using nanostructured-gas-sensor network for wide range applications including smart home, smart building and future smart city.
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Feng, Lin, Jian Wang, Ye Chen, and Chao Ding. "Detection and Early Warning of Toxic Gases Based on Semiconductor Wireless Sensors." Journal of Sensors 2021 (November 26, 2021): 1–11. http://dx.doi.org/10.1155/2021/6988676.
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This paper studies a semiconductor wireless sensor system, which is composed of a semiconductor wireless sensor sampling circuit, gas-sensitive signal alarm and wireless transmitting circuit, and wireless radio frequency signal receiving circuit. The system is suitable for wireless monitoring of hydrogen fluoride gas in chemical plants. The hydrogen fluoride gas sensor is designed, integrated, and classified according to the polarity and size of the sensor output signal. The signal processing circuit of the sensor output signal is made with an integrated design. This paper developed a simulation experimental system for the wireless monitoring network characteristics of toxic hydrogen fluoride gas and completed the monitoring system’s sensor characteristic calibration and accuracy comparison simulation experiment, the communication distance test experiment of the communication system, and the research experiment on the influence of environmental humidity on the sensor characteristics of the monitoring system. In terms of software, the workflow of network nodes has been optimized. Since the structure of the wireless sensor network is not exactly the same in different application fields, the toxic gas monitoring system based on wireless sensor networks must focus on extending the network’s life cycle. Without affecting the normal operation of the system, distributed compressed sensing can greatly extend the service life of the system. Therefore, this subject combines the compressed sensing technology developed in recent years with the air monitoring system for the processing of transmission data, in order to achieve the purpose of further reducing the energy consumption of the system. The simulation experiment demonstrated that the lmF neural network combined with gas sensor array technology can realize qualitative identification, quantitative analysis of single gas, and quantitative analysis of mixed combustible gas. The research work in this area also provides a new way to further combine the miniature hydrogen fluoride gas sensor unit with sensor technology, integrate the hydrogen fluoride gas sensor unit and the electronic tag, and expand the wireless application of the gas sensor.
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Mao, Zhenghao, Jianchao Wang, Youjin Gong, Heng Yang, and Shunping Zhang. "A Set of Platforms with Combinatorial and High-Throughput Technique for Gas Sensing, from Material to Device and to System." Micromachines 9, no. 11 (November 19, 2018): 606. http://dx.doi.org/10.3390/mi9110606.
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In a new E-nose development, the sensor array needs to be optimized to have enough sensitivity and selectivity for gas/odor classification in the application. The development process includes the preparation of gas sensitive materials, gas sensor fabrication, array optimization, sensor array package and E-nose system integration, which would take a long time to complete. A set of platforms including a gas sensing film parallel synthesis platform, high-throughput gas sensing unmanned testing platform and a handheld wireless E-nose system were presented in this paper to improve the efficiency of a new E-nose development. Inkjet printing was used to parallel synthesize sensor libraries (400 sensors can be prepared each time). For gas sensor selection and array optimization, a high-throughput unmanned testing platform was designed and fabricated for gas sensing measurements of more than 1000 materials synchronously. The structures of a handheld wireless E-nose system with low power were presented in detail. Using the proposed hardware platforms, a new E-nose development might only take one week.
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Su, Kuo Lan, Sheng Wen Shiau, Yi Lin Liao, and J. H. Guo. "Bayesian Estimation Algorithm Applying in Gas Detection Modules." Applied Mechanics and Materials 284-287 (January 2013): 1764–69. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1764.
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The paper develops gas detection modules for the intelligent building. The modules use many gas sensors to detect environment of the home and building. The gas sensors of the detection modules are classified two types. One is competitiveness gas detection module, and uses the same sensors to detect gas leakage. The other is complementation gas detection module, and uses variety sensors to classify multiple gases. The paper uses Bayesian estimation algorithm to be applied in competitiveness gas detection module and complementation gas detection module, and implement the proposed algorithm to be nice for variety gas sensor combination method. In the competitiveness gas detection module, we use two gas sensors to improve the proposed algorithm to be right. In the complementation gas detection module, we use a NH3 sensor, an air pollution sensor, an alcohol sensor, a HS sensor, a smoke sensor, a CO sensor, a LPG sensor and a nature gas sensor, and can classify variety gases using Bayesian estimation algorithm. The controller of the two gas detection modules is HOLTEK microchip. The modules can communicate with the supervised computer via wire series interface or wireless RF interface, and cautions the user by the voice module. Finally, we present some experimental results to measure know and unknown gas using the two gas detection modules on the security system of the intelligent building.
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Kusriyanto, Medilla, Firdaus, Andik Yulianto, and Syakban Kurniawan. "Early detection of LPG gas leakage based Wireless Sensor Networking." MATEC Web of Conferences 154 (2018): 01045. http://dx.doi.org/10.1051/matecconf/201815401045.
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LPG gas is the main fuel used in households. These days LPG gas leak triggered an accident that resulted in huge losses, especially if the accident occurred within the dense housing. LPG gas leakage monitoring and early detection of a gas leak and a leak warning is needed to prevent more fatal accident. Wireless sensor networking is a technology that can be used to build a centralized monitoring system by using a microcontroller as the interface and control system. This research developed system device monitoring and early detection of gas leaks by utilizing gas sensors MQ-4 and AVR microcontroller family as control devices. The system is also equipped with XBee PRO S2B nirkable devices as the interface to the wireless networking system that is used to transmit sensor data from the detection point to the monitoring center equipped with a PC and software integrated Visual Basic. Gas leak alert is sent with the message formats through social networking Gtalk.
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Wang, Jun Qiang, Shu Qiang Yang, and Yuan Chang Zhong. "Wireless Intelligence Sensor Array for Air Parameter Monitoring." Applied Mechanics and Materials 389 (August 2013): 812–18. http://dx.doi.org/10.4028/www.scientific.net/amm.389.812.
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This paper proposes a multiple target air parameters monitoring scheme with the help of the wireless intelligence sensor array which is built up with multiple sensors. In the paper, the design of the wireless intelligence array sensor is considered, the method to configure the wireless intelligence sensor network is introduced, and the information combination arithmetic of sensor network is provided. Then, a kind of minitype wireless multiple target air parameters monitoring system is built up. Experiment result clearly indicates that the system can accomplish the mission of monitoring multiple targets at the same time and the efficiency and reliability, make the air parameter monitoring arrives at a higher level. So the system proposed should be widely used in the domain of air parameter and toxic and harmful gas leakage monitoring.
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McGRATH, M. P., and A. PHAM. "Carbon Nanotube Based Microwave Resonator Gas Sensors." International Journal of High Speed Electronics and Systems 16, no. 04 (December 2006): 913–35. http://dx.doi.org/10.1142/s0129156406004089.
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This paper reviews our work on the development of microwave carbon nanotube resonator sensors for gas detection. The sensor consists of a radio frequency resonator coated with a layer of carbon nanotubes. Upon exposure to gasses, the resonant frequency of the sensor shifts to indicate the presence of gasses. Our experimental results demonstrate that the microwave carbon nanotube resonator sensor achieves a sensitivity of 4000 Hz/ppm upon exposure to ammonia and the resonant frequency is recovered when ammonia is evacuated. The sensing mechanism is dependent on electron transfer from the ammonia to the nanotubes. This sensor platform has great potential for wireless sensing network applications.
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Song, Yong Xian, Yuan Feng, and Xian Jin Zhang. "Design of Toxic Gas Monitoring System Based on Virtual Technology and WSN." Applied Mechanics and Materials 341-342 (July 2013): 650–54. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.650.
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This paper took wireless sensor network (WSN) as the data transmission way and used the LabVIEW platform, and design multifunctional virtual instrument system with signal acquisition, demonstration, analysis, storage and the historical data inquiry to implement remote operation of gas monitoring.In terms of hardware design, the wireless sensor nodes and radio frequency circuit were mainly designed, and in terms of software design, the wireless communication procedures and LabVIEW program were mainly designed. The data of measured objects were collected in real time by wireless sensor nodes, and were sent to wireless main nodes through the ZigBee wireless technology. The wireless main nodes received data of all wireless sensor nodes, and the data are encapsulated into USB package and submitted to PC, then were processed through LabVIEW platform. The system was characterized with its low power consumption, high precision, simple design, convenient operation, friendly interface and good reliability.
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HAYASHI, Hisanori, Toshitsugu UEDA, and Hiroshi OOIGAWA. "Intrinsic Safety for Wireless Hydrogen Gas Sensor." Transactions of the Society of Instrument and Control Engineers 52, no. 6 (2016): 303–9. http://dx.doi.org/10.9746/sicetr.52.303.
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Wang, Kun. "Application of Wireless Sensor Network based on LoRa in City Gas Meter Reading." International Journal of Online Engineering (iJOE) 13, no. 12 (December 11, 2017): 104. http://dx.doi.org/10.3991/ijoe.v13i12.7887.
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<span style="font-family: 'Times New Roman',serif; font-size: 10pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: DE; mso-bidi-language: AR-SA;">At present, the common meter reading method in gas meter reading system is manual. The meter reader enters the meter reading system to calculate the cost after getting the reading. This work is not only labour-intensive, but also inefficient. In addition, incorrect reading may occur due to human errors. With the development of the wireless communication technology, a wireless communication technology named LoRa for long-distance and low-power-consumption devices appeared. LoRa is a wireless communication technology with long transmission distance, low power consumption, low transmission speed, low complexity and low cost. It is mainly used in automatic control and internet of things. Through the comparison and analysis of several wireless communication technologies, a gas meter reading platform based on LoRa spread spectrum and wireless sensors is proposed. First of all, this paper briefly introduces the LoRa wireless communication technology and machine vision technology. Secondly, it gives a detailed introduction to the overall design of the system which includes system architecture design, information acquisition terminal, image acquisition module and wireless sensor module. Finally, an experiment is carried out in a residential area. The results show that the gas meter reading platform based on LoRa and wireless sensor network has a high practical value.</span>
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Kamel, Khaled, and Dr Smys s. "SUSTAINABLE LOW POWER SENSOR NETWORKS FOR DISASTER MANAGEMENT." IRO Journal on Sustainable Wireless Systems 1, no. 04 (December 23, 2019): 247–55. http://dx.doi.org/10.36548/jsws.2019.4.005.
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The wireless sensor networks that framed using the tiny sensors that are very efficient in monitoring and conveying the information’s that are sensed are almost engaged in a wide range of applications with the from environment monitoring to health monitoring. The conventional wireless sensor in spite of its sensing capabilities requires lot of power to operate which in return reduces the life time of the sensors. This paves a way for the low power wireless sensor networks that brings downs the energy consumption, by setting limit on the modes of the device operation. The paper uses the low power wireless devices for the management of a manmade disaster situation such as the air pollution created by the vehicle movement in the cities. The system acts as an early warning for metro cities, with heavy vehicle flow, the industrial outcomes and the other causes that emits the poisonous gas polluting the environment. The proposed system with the low power wireless sensor networks is tested over a busy are to evince the system in terms of the battery lifetime of the system and its monitoring capability.
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Choi, Won Hyuck, and Min Seok Jie. "Development of Real Time Harmful Gas Detecting Embedded System." Applied Mechanics and Materials 681 (October 2014): 70–75. http://dx.doi.org/10.4028/www.scientific.net/amm.681.70.
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In this paper, with the development of Information technology, application service between IT and traditional industry has been on the rise. And there are many on-going discussions actively regarding the Air quality system based on wireless sensor network which monitors and control the industrial environment automatically and manually with the application service of detecting harmful gas. In this thesis, operation program constitute the administrator monitoring device, which collects data from sensor node of wireless sensor network and sensor node and transmits environment information to display and server. Also for remote monitoring, user operation program constitutes based on PC/Smartphone Under this, the harmful gas which is made in daily life is measured. Real time monitoring system based on wireless sensor network is designed and realized.
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Khattar, Prerna. "A Smart Helmet for Secure Monitoring of Miner Data to Improve Safety." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 2812–18. http://dx.doi.org/10.22214/ijraset.2022.41393.
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Abstract: In recent times, mining has been a dangerous activity taking a severe toll on the lives of miners. Underground mining hazards include gas poisoning, suffocation, roof collapse, and gas explosion. This project aims to develop a smart helmet based on Zigbee wireless technology to build wireless sensor networks for real-time surveillance and monitoring hazardous gases and abnormal levels of temperature and humidity in the mine. These three parameters are continuously being detected using the gas sensor(s), temperature and humidity sensor, and if the predefined limit is crossed, a buzzer and LED will be initiated. Two infrared sensors, one inside and one on the surface of the helmet, are placed to check if the helmet is properly placed and to detect collision from falling debris, respectively. These values are continuously being transmitted to the control room for monitoring. In case of any hazardous situation, the led and buzzer are activated in the control room as well as on the miner’s helmet. The helmet is powered by the energy generated from piezoelectric sensors placed in the miner’s shoes, which work on the principle of vibration detected from the miner’s movement. The safety measures included in our project can drastically help us avoid mining accidents and thus saving invaluable lives. Keywords: Smart helmet, Zigbee Technology, Gas sensor, Temperature and Humidity sensor, Infrared Sensor, Coal mines, Safety
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Hidayat, Imam. "Sistem Pendeteksi Kebocoran Gas Menggunakan Sensor MQ-6 Berbasis Jaringan Sensor Wireless." Techno.Com 17, no. 4 (November 23, 2018): 355–64. http://dx.doi.org/10.33633/tc.v17i4.1771.
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Pemakaian gas LPG dapat membantu memudahkan kegiatan masak memasak dan memperlancar bisnis masyarakat yang menggunakannya. Terlepas dari kegunaannya bagi masyarakat, gas LPG juga menyimpan bahaya yang mengancam. Hal tersebut dikarenakan jika terjadi kebocoran gas pada LPG tersebut. Penyebab dari bocor tabung gas ini bisa terjadi karena kebocoran pada selang, tabung atau pada regulatornya yang tidak terpasang dengan baik dan tabung gas yang didistribusikan memang kualitasnya kurang baik atau rusak fisik. Penelitian ini bertujuan untuk menghasilkan sebuah rancang bangun alat pendeteksi kebocoran tabung gas LPG dengan menggunakan sensor MQ-6 sebagai sensor gas, dan GSM Modul sebagai pengirim notifikasi sms ke ponsel pengguna, Arduino Uno sebagai penghubung berbagai sistem dan berbagai alat lainnya. Cara kerja alat ini yaitu, ketika sensor MQ-6 mendeteksi gas LPG maka sensor akan mengirimkan data ke Arduino kemudian Arduino mengirimkan instruksi ke GSM Modul untuk mengirimkan pesan notifikasi pada ponsel pengguna.
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Cho, Jonam, and Gunchul Shin. "Fabrication of a Flexible, Wireless Micro-Heater on Elastomer for Wearable Gas Sensor Applications." Polymers 14, no. 8 (April 11, 2022): 1557. http://dx.doi.org/10.3390/polym14081557.
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Thin-film microdevices can be applied to various wearable devices due to their high flexibility compared to conventional bulk-type electronic devices. Among the various microdevice types, many IoT-based sensor devices have been developed recently. In the case of such sensor elements, it is important to control the surrounding environment to optimize the sensing characteristics. Among these environmental factors, temperature often has a great influence. There are cases where temperature significantly affects the sensor characteristics, as is the case for gas sensors. For this purpose, the development of thin-film-type micro-heaters is important. For this study, a wirelessly driven thin-film micro-heater was fabricated on the flexible and stretchable elastomer, a polydimethylsiloxane (PDMS); the antenna was optimized; and the heater was driven at the temperature up to 102 degrees Celsius. The effect of its use on gas-sensing characteristics was compared through the application of the proposed micro-heater to a gas sensor. The heated SnO2 nanowire gas sensor improved the performance of detecting carbon monoxide (CO) by more than 20%, and the recovery time was reduced to less than half. It is expected that thin-film-type micro-heaters that can be operated wirelessly are suitable for application in various wearable devices, including those for smart sensors and health monitoring.
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Artyukhov, Denis, Nikolay Gorshkov, Maria Vikulova, Nikolay Kiselev, Artem Zemtsov, and Ivan Artyukhov. "Power Supply of Wireless Sensors Based on Energy Conversion of Separated Gas Flows by Thermoelectrochemical Cells." Energies 15, no. 4 (February 9, 2022): 1256. http://dx.doi.org/10.3390/en15041256.
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This article deals with the creation of a power supply system of wireless sensors which take measurements and transmit data at time intervals, the duration of which is considerably less than the activation period of sensors. The specific feature of the power supply system is the combined use of devices based on various physical phenomena. Electrical energy is generated by thermoelectrochemical cells. The temperature gradient on the sides of these cells is created by a vortex tube. A special boost DC/DC converter provides an increase in the output voltage of thermoelectrochemical cells up to the voltage that is necessary to power electronic devices. A supercapacitor is used to store energy in the time intervals between sensor activation. A study of an experimental sample of the power supply system for wireless sensors was conducted. Using the model in MATLAB + Simulink program, the possibility and conditions for creating the considered system for a particular type of wireless sensor were shown.
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Li, Yang, Yi Ying Zhang, De Quan Gao, and Jin Ping Cao. "The Applications of Wireless Sensor Network in Smart Substation." Advanced Materials Research 614-615 (December 2012): 1881–84. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.1881.
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The electrical substation consists of many smart devices to monitor operating environment or control power facilities etc., which requires various sensors, such as temperature and humidity sensor, SF6 sensor etc, to organize as a wireless sensor network (WSN) to cooperate for intelligent operation. In this paper, we design an architecture of WSN for the smart substation, and introduce the applications in detail, including the temperature, humidity, waterlogging, SF6 gas and leakage current and 3D holographic visualization. The operation shows our solution can effectively sense the environmental object and monitor the substation assets.
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Arroyo, Patricia, Jesús Lozano, and José Suárez. "Evolution of Wireless Sensor Network for Air Quality Measurements." Electronics 7, no. 12 (November 22, 2018): 342. http://dx.doi.org/10.3390/electronics7120342.
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This study addresses the development of a wireless gas sensor network with low cost, small size, and low consumption nodes for environmental applications and air quality detection. Throughout the article, the evolution of the design and development of the system is presented, describing four designed prototypes. The final proposed prototype node has the capacity to connect up to four metal oxide (MOX) gas sensors, and has high autonomy thanks to the use of solar panels, as well as having an indirect sampling system and a small size. ZigBee protocol is used to transmit data wirelessly to a self-developed data cloud. The discrimination capacity of the device was checked with the volatile organic compounds benzene, toluene, ethylbenzene, and xylene (BTEX). An improvement of the system was achieved to obtain optimal success rates in the classification stage with the final prototype. Data processing was carried out using techniques of pattern recognition and artificial intelligence, such as radial basis networks and principal component analysis (PCA).
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Mingesz, R., G. Vadai, and Z. Gingl. "Power Spectral Density Estimation for Wireless Fluctuation Enhanced Gas Sensor Nodes." Fluctuation and Noise Letters 13, no. 02 (June 2014): 1450011. http://dx.doi.org/10.1142/s0219477514500114.
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Fluctuation enhanced sensing (FES) is a promising method to improve the selectivity and sensitivity of semiconductor and nanotechnology gas sensors. Most measurement setups include high cost signal conditioning and data acquisition units as well as intensive data processing. However, there are attempts to reduce the cost and energy consumption of the hardware and to find efficient processing methods for low cost wireless solutions. In this paper, we propose highly efficient signal processing methods to analyze the power spectral density of fluctuations. These support the development of ultra-low-power intelligent fluctuation enhanced wireless sensor nodes while several further applications are also possible.
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Maulana, Nurhuda, Oky Dwi Nurhayati, and Eko Didik Widianto. "Perancangan Sistem Sensor Pemonitor Lingkungan Berbasis Jaringan Sensor Nirkabel." Jurnal Teknologi dan Sistem Komputer 4, no. 2 (April 23, 2016): 353. http://dx.doi.org/10.14710/jtsiskom.4.2.2016.353-360.
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Air pollution is a problem that get a lot of people’s attention, especially at campus environment. It is evocate the stakeholder of campus to monitor the environmental conditions at the campus which themed a green campus. Advances in science and technology, especially in computer and embedded systems in principle can be applied to solve this problem. There are creating an application system that is equipped with sensor to monitor the air quality level wirelessly. The system supports several environmental monitoring sensors that are connected in a wireless sensor network. The objective of this research was to design and create a sensor system that can monitor environment condition quantity by providing the appropriate output value. Sensors that used to read the air quality parameters is TGS 2600 to read the gas concentration of carbon monoxide (CO), TGS 2201 for nitrogen dioxide (NO2), GP2Y1010AU0F for particulate matter, BH1750 for light ambient, and SHT11 for humidity and temperature. This sensor system using Arduino board that based on Atmega 2560 microcontroller. This system is equipped with RTC as a time and GPS as a coordinate where the sensor system is placed as a node. The result of this reseach is the system able to read parameters as air quality monitoring well. The error reading in this sensor system is 0.69 ppm CO gas, 2.8 lx on the intensity of light, 0.22 C in temperature reading, and 0.98% in humidity readings.
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Wu, Da, Ling Qiao Zhu, Jun Tang, Tao Jiang, Zhi Min Li, and Xiang Guang Chen. "The Development of the Remote Wireless Monitoring Device for Toxic Gases." Advanced Materials Research 846-847 (November 2013): 415–20. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.415.
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For the scene where there is a toxic gas leak, in order to detect the gas quickly and safely and make the effective solutions, the project of monitoring toxic gases in a remote wireless way and the process of the development is proposed in this paper. The device developed in this paper includes several wireless sensor network (WSN) nodes and one hand-held terminal, and the sensor module of WSN node is composed of several chemical gas sensors. The nodes will be sent to the scene by ground robots or unmanned aerial vehicles and make up the WSN monitoring system automatically, to achieve an aim of monitoring the toxic gas in real time. The experiment results show that the device can deal with the emergencies about the leak of toxic gas efficiently. And it has the advantages of low power consumption, high cost performance, self-forming network, anti-interference. Its suitable to monitor the toxic gas in various environments of industrial production and chemical scene of accident and unexpected occasions where there is a leak of toxic gas.
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González, Ernesto, Juan Casanova-Chafer, Alfonso Romero, Xavier Vilanova, Jan Mitrovics, and Eduard Llobet. "LoRa Sensor Network Development for Air Quality Monitoring or Detecting Gas Leakage Events." Sensors 20, no. 21 (October 31, 2020): 6225. http://dx.doi.org/10.3390/s20216225.
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During the few last years, indoor and outdoor Air Quality Monitoring (AQM) has gained a lot of interest among the scientific community due to its direct relation with human health. The Internet of Things (IoT) and, especially, Wireless Sensor Networks (WSN) have given rise to the development of wireless AQM portable systems. This paper presents the development of a LoRa (short for long-range) based sensor network for AQM and gas leakage events detection. The combination of both a commercial gas sensor and a resistance measurement channel for graphene chemoresistive sensors allows both the calculation of an Air Quality Index based on the concentration of reducing species such as volatile organic compounds (VOCs) and CO, and it also makes possible the detection of NO2, which is an important air pollutant. The graphene sensor tested with the LoRa nodes developed allows the detection of NO2 pollution in just 5 min as well as enables monitoring sudden changes in the background level of this pollutant in the atmosphere. The capability of the system of detecting both reducing and oxidizing pollutant agents, alongside its low-cost, low-power, and real-time monitoring features, makes this a solution suitable to be used in wireless AQM and early warning systems.
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Wang, Qijun, and Shiqi Wei. "Development and Application of Methane Leakage Monitoring System for Gas Transmission Pipeline." Journal of Electronic Research and Application 5, no. 6 (November 30, 2021): 44–49. http://dx.doi.org/10.26689/jera.v5i6.2682.
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Oil and gas pipeline transportation, as a relatively safe way of oil and gas transportation, undertakes most of the transportation tasks of crude oil and natural gas. Oil and gas pipeline accidents affect a wide range of consequences. Therefore, the oil and gas pipeline leakage detection is paid more and more attention. In this paper, ultra-low power methane gas sensor is selected to collect methane gas concentration in the air, and wireless network technology is used to build a wireless network sensor system with 4G function. Through the sensor distribution along the pipeline, it can intuitively and accurately judge whether there is a micro-leakage in the pipeline, and understand the diffusion situation after the leakage. The sensor system has high reliability and stability, and has high value of popularization and application.
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Wang, Ming Wei, Yue Wang, and Wen Qiang Guo. "Deployment of Wireless Sensor Network for Gas Leak Monitoring." Advanced Materials Research 734-737 (August 2013): 2807–10. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2807.
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Gas leak is one of the main reasons of causing accidents in the petrochemical industry. The effective technical means for timely, accuracy monitoring gas leak is imperative for accident prevention. With recent advances in wireless communication and embedded computing technologies, Gas leak monitoring systems (GLMS) incorporated with wireless sensor networks (WSNs) have become practically feasible. A gas leak monitoring scenario of ZigBee WSN incorporated with the GPRS and ultrasonic gas leak detection (UGLD) is proposed to provide continuous, timely and reliable monitoring and analysis of gas leak parameters for increased sensitivity and specificity. The hardware and software development platform of GLMS is also presented. With its low power, flexible and compact design, the gas leak monitoring system provides a versatile environment for installation, maintaining.
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Yang, Hui. "Design of Lower Computer System in Wireless Sensor Network for Monitoring of SF6 Moisture Content." Applied Mechanics and Materials 462-463 (November 2013): 39–44. http://dx.doi.org/10.4028/www.scientific.net/amm.462-463.39.
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Aiming at the problems currently exist in the wire communication used in the monitoring of SF6 moisture content parameters, such as complex wiring structure, fixed data collection points and easy occurrence of monitoring blind spots, ZigBee wireless communication technology is adopted according to the characteristics of soft sensing of SF6 moisture content, which applies to the implementation of design scheme of lower computer system for the SF6 moisture content multi-data collection wireless sensor network. At first, collection of relevant data information such as absolute humidity, temperature and pressure of SF6 gas is achieved utilizing a variety of wireless sensors; then flexible increase of sensors is achieved using ZigBee communication protocol and hardware modules. Simulation data show that: the maximum wireless transmission distance of the present design is 110 meters, and the minimum transmission distance 60 meters on condition of presence of obstacles, furthermore, the transmission bit error rate is low; the design also has small monitoring error for SF6 gas parameters, and a good reliability.
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Khaytbaev, A. E., and A. M. Eshmuradov. "APPLICATIONS OF NEURAL NETWORK TECHNOLOGIES IN WIRELESS SENSOR NETWORKS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 195 (September 2020): 46–51. http://dx.doi.org/10.14489/vkit.2020.09.pp.046-051.
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The purpose of the article is to study the possibilities of improving the efficiency of the sensory network management technique, using the neural network method. The presented model of the wireless sensor network takes into account the charging of the environment. The article also tests the hypothesis of the possibility of organizing distributed computing in wireless sensor networks. To achieve this goal, a number of tasks are allocated: review and analysis of existing methods for managing BSS nodes; definition of simulation model components and their properties of neural networks and their features; testing the results of using the developed method. The article explores the major historical insights of the application of the neural network technologies in wireless sensor networks in the following practical fields: engineering, farming, utility communication networks, manufacturing, emergency notification services, oil and gas wells, forest fires prevention equipment systems, etc. The relevant applications for the continuous monitoring of security and safety measures are critically analyzed in the context of the relevancy of specific decisions to be implemented within the system architecture. The study is focused on the modernization of methods of control and management for the wireless sensor networks considering the environmental factors to be allocated using senor systems for data maintenance, including the information on temperature, humidity, motion, radiation, etc. The article contains the relevant and adequate comparative analysis of the updated versions of node control protocols, the components of the simulation model, and the control method based on neural networks to be identified and tested within the practical organizational settings.
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Khaytbaev, A. E., and A. M. Eshmuradov. "APPLICATIONS OF NEURAL NETWORK TECHNOLOGIES IN WIRELESS SENSOR NETWORKS." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 195 (September 2020): 46–51. http://dx.doi.org/10.14489/vkit.2020.09.pp.046-051.
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The purpose of the article is to study the possibilities of improving the efficiency of the sensory network management technique, using the neural network method. The presented model of the wireless sensor network takes into account the charging of the environment. The article also tests the hypothesis of the possibility of organizing distributed computing in wireless sensor networks. To achieve this goal, a number of tasks are allocated: review and analysis of existing methods for managing BSS nodes; definition of simulation model components and their properties of neural networks and their features; testing the results of using the developed method. The article explores the major historical insights of the application of the neural network technologies in wireless sensor networks in the following practical fields: engineering, farming, utility communication networks, manufacturing, emergency notification services, oil and gas wells, forest fires prevention equipment systems, etc. The relevant applications for the continuous monitoring of security and safety measures are critically analyzed in the context of the relevancy of specific decisions to be implemented within the system architecture. The study is focused on the modernization of methods of control and management for the wireless sensor networks considering the environmental factors to be allocated using senor systems for data maintenance, including the information on temperature, humidity, motion, radiation, etc. The article contains the relevant and adequate comparative analysis of the updated versions of node control protocols, the components of the simulation model, and the control method based on neural networks to be identified and tested within the practical organizational settings.
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Aixia, Duan, Huang Yongzhi, Duan Yanling, and Wang Qiuhong. "Thermal Sensor Boiler Monitoring based on Wireless Sensing." International Journal of Online Engineering (iJOE) 14, no. 08 (August 30, 2018): 107. http://dx.doi.org/10.3991/ijoe.v14i08.9176.
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To solve the problems of traditional wiring monitoring methods, such as difficulty in wiring, high temperature, and premature aging of the lines, the development status and trend of ZigBee technology were analyzed. A ZigBee-based online gas leakage monitoring system for power plant boilers was designed to avoid gas leakage in these boilers. ZigBee short-range wireless communication technology was used instead of the wired method to complete online monitoring of power plant boilers. Results showed that the system timely monitored the gas leakage and revealed the operating status of the power plant boiler in real time. In addition, the next moment of gas leakage was predicted, which ensured the safe and stable operation of the power plant boiler. In summary, gray system theory provides powerful theoretical support for the leakage status assessment and gas leakage prediction of the boiler. The proposed system ensures the safe, stable, and efficient operation of the power plant boiler.
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Salman, Ayman Dawood, Osamah Ibrahim Khalaf, and Ghaida Muttasher Abdulsaheb. "An adaptive intelligent alarm system for wireless sensor network." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 1 (July 1, 2019): 142. http://dx.doi.org/10.11591/ijeecs.v15.i1.pp142-147.
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Security is one of the imperative issues in an advanced local condition. The current center around formative and research issues of Wireless Sensor Network(WSN) based Smart Home. WSN based shrewd home detection system gives a safe and safe living condition. A Wireless Sensor System (WSN) is a system which is building by utilizing little independent hubs (sensors). Its motivation is to screen certain ecological parameters, for example, temperature, dampness, brilliance, weight, sound, movement, and so forth. This paper depicts the improvement of a smart home condition dependent on exact Wireless Sensor Network and furthermore depicts private vitality observing and controlling procedures for keen home systems administration framework. This paper proposes a basic and adaptable remote arrange for domestics computerization of temperature, moistness, gas, movement and light by executing dependable sensor hubs which can be controlled too observed. This innovation offers energizing and new chance to build the availability of devices inside the home for the home computing.
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Guo, Ke, Pan Yang, Dan Huai Guo, and Yi Liu. "Gas Leakage Monitoring with Mobile Wireless Sensor Networks." Procedia Computer Science 154 (2019): 430–38. http://dx.doi.org/10.1016/j.procs.2019.06.061.
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Keat Ghee Ong, Kefeng Zeng, and C. A. Grimes. "A wireless, passive carbon nanotube-based gas sensor." IEEE Sensors Journal 2, no. 2 (April 2002): 82–88. http://dx.doi.org/10.1109/jsen.2002.1000247.
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Li, Zhe Yun, and Qing Li. "Comprehensive detection device and physical testing for mechanical properties of seabed sediments and shallow gas." Journal of Physics: Conference Series 2083, no. 2 (November 1, 2021): 022105. http://dx.doi.org/10.1088/1742-6596/2083/2/022105.
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Abstract In this paper, a comprehensive detection device for the mechanical properties of seabed sediments and shallow gas is designed, which is mainly composed of the seabed sediment mechanical properties detection part, the shallow gas detection part and the ultrasonic wireless transmission part. The mud water gas separation structure of the shallow gas detection part separates the shallow gas from the mud water, and then the methane concentration in the shallow gas is measured by the non-dispersive infrared methane sensor, which realizes the collection of the submarine shallow gas and the automatic real-time monitoring of the concentration. The measurement of the mechanical properties of seabed sediments realizes the real-time measurement of the three parameters of cone resistance, sidewall friction and pore water pressure, which characterize the mechanical properties of seabed sediments, through strain-sensitive elements. The ultrasonic wireless data transmission part is mainly for the data detected by the mechanical properties of the seabed sediments to be wirelessly transmitted to the sensor placement room through the ultrasonic transducer across the mud-water-gas separation structure. Finally, the data measured by the two parts are transmitted to the mother ship through the cable located in the sensor placement room. The experimental results show that it has the ability to comprehensively detect the mechanical properties of seabed sediments and shallow gas, and has strong operability.
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Wang, Gang, Yang Zhao, Zeheng Ding, and Xiaohu Zhao. "An Online Calibration Method Based on n-Tuple and Opportunistic Communication for Mine Mass Portable Gas Sensors." Sensors 21, no. 7 (April 2, 2021): 2451. http://dx.doi.org/10.3390/s21072451.
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Due to the increasing deployment of the Internet of Things (IoT) in the mining industry, portable gas monitoring devices have been widely used. Sensor calibration of large-scale portable gas monitoring devices is becoming an urgent problem to be solved. An online sensor calibration algorithm based on n-tuple and opportunistic communication is proposed based on the specific characteristics (i.e., ‘single-sensor, multi-position’ and ‘multi-sensor, single-position’) of each portable gas monitoring device employed. In this paper, data collected from portable and fixed sensors were defined as multi-dimensional data points and gas monitoring data pairs, respectively. The cluster-based self-adaptive weighted data fusion algorithm and multi-period single sensor reliability fusion algorithm were proposed and used for overall judging. The overall judgments were broadcast to each wireless access point by network, and the reliability of the calibration information transmission was enhanced by opportunistic communications. The simulation results revealed that efforts required for the calibration of portable sensors were reduced significantly, and their reliability was improved.
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Yin, Chao, Shao Qiang Liu, Yong Zhou Li, and Xiang Yong Chen. "Wireless Sensor for Oil Leakage Detection of Depots." Applied Mechanics and Materials 336-338 (July 2013): 244–47. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.244.
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This paper presents a low-power wireless sensor system scheme for monitoring aviation fuel leakage of depots. Based on MSP430 microcontroller and powered by a combination of lithium battery and solar energy, the system employs the photoionization detection (PID) technology to detect the oil leakage and wirelessly reports the detection results by CC2520 radio-frequency communication module. With a low-voltage PID integrated sensor and a specialized active gas-collecting device, the system can effectively measure the concentration of leakage in low power mode. Furthermore, an integrated temperature sensor is used to compensate environmental temperature influence on the PID sensor. The effectiveness analysis and power estimation of the system show that the proposed scheme is suitable for detecting aviation fuel leakage of depots.
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Huang, Shou Zhi, and Xue Zeng Zhao. "A Design of Wireless Sensor System for Water Quality Monitoring of Oil Field." Applied Mechanics and Materials 281 (January 2013): 51–54. http://dx.doi.org/10.4028/www.scientific.net/amm.281.51.
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In these years, petroleum and natural gas exploitation cause underground water pollution worldwide. And the leak of the crude oil and injection of waste water in the fracking process are two main reasons of water pollution during the exploitation. So monitoring the water quality in petroleum and natural gas exploitation area is more and more important to assure the drinking water’s safety for people who live nearby. In this paper, a wireless sensor system for water quality monitoring based on wireless sensor networks (WSNs) is designed. This system uses XBee modules as the communication units and chooses proper sensors to monitor the key parameters for water quality including PH, turbidity, conductivity and temperature. And we also use LABVIEW to build an interface to monitor, restore and analyze the data collected.
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Zhen, Li Ping, and Hai Yan Cao. "Design of Combustible Gas Detection System Using Wireless Transmission Technology." Advanced Materials Research 694-697 (May 2013): 1321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.1321.
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The detection device of combustible gas are designed in the presented work,using wireless transceiver and GSM network.The system realize the wireless transmission of the gas concentration,and also can send alarm information to user’s mobile when an exception occurs. The system consists of two parts: a master and slave. The function of the slave is to collect data, process data and transffer the data to the master. The task of the master is to receive data and display it by LED. The signal acquisition is completed by sensor TGS813 and A/D converter TLC2543. The wireless transmission is achieved through wireless transceiver nRF905. Since the accuracy of the sensor is affected by the environment, using DS18B20 to achieve temperature compensation. And with wireless communication module TC35i and GSM network platform, we can send the alarm information to user’s mobile promptly.
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Kweon, Soon-Jae, Jeong-Ho Park, Chong-Ook Park, Hyung-Joun Yoo, and Sohmyung Ha. "Wireless Kitchen Fire Prevention System Using Electrochemical Carbon Dioxide Gas Sensor for Smart Home." Sensors 22, no. 11 (May 24, 2022): 3965. http://dx.doi.org/10.3390/s22113965.
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This paper presents a wireless kitchen fire prevention system that can detect and notify the fire risk caused by gas stoves. The proposed system consists of two modules. The sensor module detects the concentration of carbon dioxide (CO2) near the gas stove and transmits the monitoring results wirelessly. The alarm module, which is placed in other places, receives the data and reminds the user of the stove status. The sensor module uses a cost-efficient electrochemical CO2 sensor and embeds an in situ algorithm that determines the status of the gas stove based on the measured CO2 concentration. For the wireless communication between the modules, on-off keying (OOK) is employed, thereby achieving a longer battery lifetime of the alarm module, low cost, and simple implementation. To increase the lifetime further, a wake-up function based on passive infrared (PIR) sensing is employed in the alarm module. Our system can successfully detect the on state of the stove within 40 s and the off state within 80 s. Thanks to the low-power implementation, in situ algorithm, and wake-up function, the alarm module’s expected battery lifetime is extended to about two months.
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Bruckner, Gudrun, and Jochen Bardong. "Wireless Readout of Multiple SAW Temperature Sensors." Sensors 19, no. 14 (July 12, 2019): 3077. http://dx.doi.org/10.3390/s19143077.
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It has since long been known that surface acoustic wave (SAW) devices, resonators as well as delay lines, can be used as passive wireless sensors for physical quantities, like temperature and pressure, as well as gas sensors or identification-tags (ID-tags). The sensors are robust, work passively without a battery, can be applied at high temperatures, and provide a high resolution. Nevertheless, if the devices are used wirelessly in an industrial environment, several constraints have to be taken into account, especially when more than one quantity or device needs to be measured at the same time. The paper addresses the challenges that must be tackled when establishing multi-sensor-wireless-readout for industrial applications. Major issues here are the legal regulations for industrial, scientific and medical frequency bands (ISM-bands), as well as sampling time and costs, which impose severe restrictions to any system design. We describe several design approaches and their constraints. We successfully designed sensors based on reflective delay lines that allow the parallel readout of four independent temperature sensors in the 2.45 GHz ISM-band. These devices were fabricated and positively tested, demonstrating the applicability of SAW sensors for industrial applications.
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Nugroho, Lova, Rachmad Saptono, and Aad Hariyadi. "Sistem Monitoring Kadar Gas Metana (Ch4), Gas Amonia (Nh3) Dan Gas Karbon Dioksida (Co2) Pada Tempat Pembuangan Sampah Untuk Pencegahan Penyakit Ispa Berbasis Wireless Sensor Network." Jurnal Jartel Jurnal Jaringan Telekomunikasi 11, no. 4 (December 30, 2021): 220–27. http://dx.doi.org/10.33795/jartel.v11i4.236.
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Adanya teknologi Wireless Sensor Network (WSN) dimanfaatkan untuk membuat sistem sistem monitoring kadar gas pada tempat pembuangan akhir sampah, khususnya tiga gas yang akan dimonitoring yaitu gas metana (CH4), gas amonia (NH3) dan gas karbondioksida (CO2) yang dapat mengakibatkan penyakit infeksi saluran pernafasan. Sistem monitoring ini memanfaatkan teknologi Wireless Sensor Network supaya dapat memonitoring daerah yang lebih luas dengan menggunakan jumlah node yang banyak. Hasil komunikasi menggunakan modul nRF24L01 dari node sensor ke server dengan model komunikasi peer to peer dalam kondisi Line of Sight dapat berkomunikasi pada jarak maksimal 120meter dengan rata – rata delay yaitu 6.98s dan packet loss saat pengiriman data sebanyak 14% yang termasuk kategori buruk menurut ITU-T G.114. Kemudian untuk mengetahui kualitas jaringan saat melakukan pengiriman data dari server ke firebase dengan software wireshark didapatkan delay 261ms, kemudian untuk packet loss didapatkan nilai 8.3% masuk ke dalam kategori baik menurut ITU-T G.114.
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Shen, Sanmin, Zhihong Fan, Jiahao Deng, Xiaowei Guo, Lei Zhang, Guanyu Liu, Qiulin Tan, and Jijun Xiong. "An LC Passive Wireless Gas Sensor Based on PANI/CNT Composite." Sensors 18, no. 9 (September 10, 2018): 3022. http://dx.doi.org/10.3390/s18093022.
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This paper proposes a wireless passive gas sensor based on the principle of LC mutual coupling. After the acidification of the carbon nanotube (CNT), the in-situ polymerization of the aminobenzene monomers was conducted on the surface of the acidified CNT to form a sensitive material composed of a polyaniline/carbon nanotube (PANI/CNT) composite. The Advanced Design System (ADS) software was used for simulating and analyzing the designed structure, which obtained the various parameters of the structure. A lead-free aluminum paste was printed on an alumina ceramic substrate via the screen printing technique to form an inductor coil, before the gas sensitive material was applied to prepare a wireless passive gas sensor, consisting of a single-turn inductor and interdigitated electrodes on the base structure. Finally, an experimental platform was built to test the performance of the sensor. The sensitivity of the gas sensor is about 0.04 MHz/ppm in an atmosphere with a NH3 concentration of 300 ppm. The sensor was shown to have good repeatability and high stability over a long time period.
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Ouni, Ridha, and Kashif Saleem. "Framework for Sustainable Wireless Sensor Network Based Environmental Monitoring." Sustainability 14, no. 14 (July 7, 2022): 8356. http://dx.doi.org/10.3390/su14148356.
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Wireless sensor networks (WSN) are the base of the Internet of Things (IoT) that all together give rise to the smart city. These WSNs consist of several sensors, which are densely distributed to observe physical or environmental conditions, like humidity, temperature, light intensity, and gas concertation. The sensors reading data are transmitted to the network coordinator, the IP-gateway, which is at the heart of the wireless network. Many monitoring systems are to be found in the literature with generic designs and with the output of algorithms that runs on the given systems. In this paper, we review the related work on monitoring systems and propose the framework based on WSN to sense the readings from the environment to transmit and store in the cloud for calling on the handheld devices when required by the single or multiple users. A real sensor nodes-based experimental testbed is implemented in order to study the scalability, adaptability, and sustainability of the novel WSN-based environmental monitoring framework.
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Socarrás Bertiz, Carlos Alberto, Juan Jesús Fernández Lozano, Jose Antonio Gomez-Ruiz, and Alfonso García-Cerezo. "Integration of a Mobile Node into a Hybrid Wireless Sensor Network for Urban Environments." Sensors 19, no. 1 (January 8, 2019): 215. http://dx.doi.org/10.3390/s19010215.
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Robots, or in general, intelligent vehicles, require large amounts of data to adapt their behavior to the environment and achieve their goals. When their missions take place in large areas, using additional information to that gathered by the onboard sensors frequently offers a more efficient solution of the problem. The emergence of Cyber-Physical Systems and Cloud computing allows this approach, but integration of sensory information, and its effective availability for the robots or vehicles is challenging. This paper addresses the development and implementation of a modular mobile node of a Wireless Sensor Network (WSN), designed to be mounted onboard vehicles, and capable of using different sensors according to mission needs. The mobile node is integrated with an existing static network, transforming it into a Hybrid Wireless Sensor Network (H-WSN), and adding flexibility and range to it. The integration is achieved without the need for multi-hop routing. A database holds the data acquired by both mobile and static nodes, allowing access in real-time to the gathered information. A Human–Machine Interface (HMI) presents this information to users. Finally, the system is tested in real urban scenarios in a use-case of measurement of gas levels.
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Dr. Soundara Rajan, Pradeep K. G. M. ,. Dr S. VENKATESAN,. "A NEURAL NETWORK BASED SMART BUILDING MONITORING SYSTEM USING WIRELESS SENSOR NETWORK." INFORMATION TECHNOLOGY IN INDUSTRY 9, no. 1 (February 28, 2021): 232–39. http://dx.doi.org/10.17762/itii.v9i1.123.
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A Smart building monitoring System uses Sensors like temperature Sensor, humidity sensor, motion / occupancy Sensor, contact sensor, Gas/air quality Sensor, Strain Sensor, electrical current monitoring Sensor etc for monitoring an environmental factors and to control devices such as air conditioner, ventilator, alarm, Security grand system etc using sensor information. Our proposed system uses effective neural network to gather information from different Sensor and consolidate it by Information Isolation Node (IIN) and send to sink node The Sink node sends information. to cloud where remote monitoring is done and it also receives Control information from cloud and operates different equipments of building. For efficient implementation only needed information are sent to cloud and necessary action are taken by remote system based on consolidated information sent by Information Isolation Node (IN) through Sink node The Sink node sends information to cloud where remote monitoring is done and it also receives Control information from cloud and operates different equipments of building.
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Wright, Ruishu F., Ping Lu, Jagannath Devkota, Fei Lu, Margaret Ziomek-Moroz, and Paul R. Ohodnicki. "Corrosion Sensors for Structural Health Monitoring of Oil and Natural Gas Infrastructure: A Review." Sensors 19, no. 18 (September 13, 2019): 3964. http://dx.doi.org/10.3390/s19183964.
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Corrosion has been a great concern in the oil and natural gas industry costing billions of dollars annually in the U.S. The ability to monitor corrosion online before structural integrity is compromised can have a significant impact on preventing catastrophic events resulting from corrosion. This article critically reviews conventional corrosion sensors and emerging sensor technologies in terms of sensing principles, sensor designs, advantages, and limitations. Conventional corrosion sensors encompass corrosion coupons, electrical resistance probes, electrochemical sensors, ultrasonic testing sensors, magnetic flux leakage sensors, electromagnetic sensors, and in-line inspection tools. Emerging sensor technologies highlight optical fiber sensors (point, quasi-distributed, distributed) and passive wireless sensors such as passive radio-frequency identification sensors and surface acoustic wave sensors. Emerging sensors show great potential in continuous real-time in-situ monitoring of oil and natural gas infrastructure. Distributed chemical sensing is emphasized based on recent studies as a promising method to detect early corrosion onset and monitor corrosive environments for corrosion mitigation management. Additionally, challenges are discussed including durability and stability in extreme and harsh conditions such as high temperature high pressure in subsurface wellbores.