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1
Wu, Dong Yue. "Electromagnetic Measurement System for Monitoring Crack of Conductivity Material." Applied Mechanics and Materials 391 (September 2013): 473–76. http://dx.doi.org/10.4028/www.scientific.net/amm.391.473.
Повний текст джерелаАнотація:
Electromagnetism based detection has advanced rapidly in recent years because of its characteristics of non-contact and non-invasion nature. An electromagnetic measurement system for monitoring the crack of conductivity material was presented in this paper. The system consists of signal source module, measuring module and demodulation module. In order to evaluate the system performance, some prime experimental work was undertaken, the results showed the feasibility of the system.
2
Wang, Hao, and Dian Ren Chen. "Radar Non-Contact Life Parameter Detection System." Advanced Materials Research 1044-1045 (October 2014): 833–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.833.
Повний текст джерелаАнотація:
The main principle of radar non - contact life detection technology is the use of electromagnetic wave by the human body, the echo signal is modulated by the surface movement caused the life activities of the human body, so that some parameters of the return signal change. The research on the non contact detection technology, completed the construction of life monitoring system module of hardware, design of software algorithm, real-time data acquisition, and the use of special software algorithms, to detect these changes, and then extracting parameters of human life.
3
Hou, Yu, Jian Yi Kong, and Xing Dong Wang. "Research on Online Monitoring for the Main Drive System of Rolling Mill." Applied Mechanics and Materials 127 (October 2011): 444–48. http://dx.doi.org/10.4028/www.scientific.net/amm.127.444.
Повний текст джерелаАнотація:
An online monitoring method for the main drive system of rolling mill is studied in this paper. The monitoring objects are drive shaft torque, rolling force, and other related process signals of the rough rolling mill. A non-contact torque measurement method based on induction power supply was adopted, and this kind of power supply for sensors and transmitters can provide a long-term stable power supply, and make the system work continuously. The overall monitoring system includes signal acquisition module, network communication module, database server module, status monitoring and alarm module, signal processing and analysis module, and client server module. The realization of the monitoring system can help to prevent catastrophic damage and reduce additional costs due to unexpected downtime.
4
Huang, Xian Ge, and Zhan Rong Jing. "The Collection System of Relay Electrical Endurance Based on LabVIEW." Applied Mechanics and Materials 148-149 (December 2011): 1154–57. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1154.
Повний текст джерелаАнотація:
Electrical-endurance of relay is great important work .In this paper, the composition of relay collection system and using ni_7811R achieve fpga contact collection technology based on Labview platform are introduced .This paper make contact information can be collected real- timely and transferred rapidly through dma module . It has positive significance to enhance relay quality and reliability.
5
Cruz, André, and André Vasconcelos. "A Reference Application Architecture for the CRM Domain." International Journal of Enterprise Information Systems 11, no. 2 (April 2015): 24–49. http://dx.doi.org/10.4018/ijeis.2015040102.
Повний текст джерелаАнотація:
This paper presents the definition of a Reference Application Architecture for the Customer Relationship Management (CRM) domain. The definition of the Reference Application Architecture is done by extracting best practices from five CRM commercial solutions: SugarCRM, Microsoft Dynamics CRM, Sage CRM, Oracle Siebel CRM and Salesforce CRM. The CRM Reference Architecture was developed considering the shared functionalities and information entities among these commercial solutions. In the Reference Architecture the authors identify six modules in the CRM system and five systems, which interact with the CRM system. The six CRM modules are: Account module, Sales module, Marketing module, Service module, Scheduler Module and Administration module. The five interacting systems are: Portal, Contact Center, Document and Knowledge Base Management system, Workflow system and Reporting and Analytics system. Then the authors apply the defined architecture in a case study from the Portuguese Public Administration, the Citizen Spaces provided by the Agency for the Administrative Modernization. The authors compare the current state of the Citizen Spaces with a possible architecture reached through the Reference Architecture, and assess the benefits and pitfalls of the purposed architecture.
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Chen, Shuo, Cong Xiao Tan, and Xiao Le Fang. "Design of Plunger Limit Switch Testing System Based on Virtual Instrument Technology." Applied Mechanics and Materials 599-601 (August 2014): 896–99. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.896.
Повний текст джерелаАнотація:
This paper introduces a plunger limit switch testing system based on Virtual Instrument Technology with servo control module and data acquisition module. The proposed system is designed for measuring contact resistance, force-displacement curve and voltage-displacement curve. And the product qualification is automatically judged according to the measured result. Field experiment shows that the parameter testing system has a stable and reliable performance with high precision.
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Qi, Pengyuan, Gang Wang, Zhen Gao, Xianghua Liu, and Weijie Liu. "Measurements of Temperature Distribution for High Temperature Steel Plates Based on Digital Image Correlation." Materials 12, no. 20 (October 12, 2019): 3322. http://dx.doi.org/10.3390/ma12203322.
Повний текст джерелаАнотація:
Temperature distribution is an important process parameter of steel plates during electromagnetic induction heating treatment. This study uses the digital image correlation method to develop an effective non-contact temperature measurement that allows obtaining valuable information about the temperature value of a high temperature steel plate specimen and analyzing its temperature distribution. A principle of thermal radiation temperature measurement based on the color chagre couled device (CCD) technology was introduced. The image processing system encapsulates the image update module, form mode module, image event module and temperature analysis module. The error analysis and temperature calibration were carried out to make sure the error deviation of the measurement system was within a small range. The temperature distribution of B1500HS at high temperature was analyzed by the designed measurement system which was in good agreement with the result from Raynger 3i Plus temperature gun, indicating that the measurement system based on image processing basically meets the requirements of temperature distribution measurement of a high temperature steel plate, and provides an important reference for a high temperature steel plate in non-contact temperature distribution measurement.
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Tang, Rui-Yin, Zhou-Mo Zeng, Hong-Kun He, and Zhi-Kun Chen. "Planeness Measurement of Computer Harddisk Surface Based on Opto-Mechatronics Technology." International Journal of Automation Technology 7, no. 2 (March 5, 2013): 171–75. http://dx.doi.org/10.20965/ijat.2013.p0171.
Повний текст джерелаАнотація:
This paper presents a novel method based on optomechatronics for highly accurately detecting the planeness of computer hard-disk surfaces. This article introduces the detailed design of the system, which includes four modules: the optic-electric detection module, the 2-dimensional mechanic platform, the motion control module and the human-machine interaction module. Results show that the system has merits like non-contact, high accuracy, flexible and reliable control and high efficiency. The system has been applied successfully at a foreign-funded enterprise in Singapore.
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Truong, Thomas, Anh Dinh, and Khan Wahid. "An Ultra-Wideband Frequency System for Non-Destructive Root Imaging." Sensors 18, no. 8 (July 26, 2018): 2438. http://dx.doi.org/10.3390/s18082438.
Повний текст джерелаАнотація:
Understanding the root system architecture of plants as they develop is critical for increasing crop yields through plant phenotyping, and ultra-wideband imaging systems have shown potential as a portable, low-cost solution to non-destructive imaging root system architectures. This paper presents the design, implementation, and analysis of an ultra-wideband imaging system for use in imaging potted plant root system architectures. The proposed system is separated into three main subsystems: a Data Acquisition module, a Data Processing module, and an Image Processing and Analysis module. The Data Acquisition module consists of simulated and experimental implementations of a non-contact synthetic aperture radar system to measure ultra-wideband signal reflections from concealed scattering objects in a pot containing soil. The Data Processing module is responsible for interpreting the measured ultra-wideband signals and producing an image using a delay-and-sum beamforming algorithm. The Image Processing and Analysis module is responsible for improving image quality and measuring root depth and average root diameter in an unsupervised manner. The Image Processing and Analysis module uses a modified top-hat transformation alongside quantization methods based on energy distributions in the image to isolate the surface of the imaged root. Altogether, the proposed subsystems are capable of imaging and measuring concealed taproot system architectures with controlled soil conditions; however, the performance of the system is highly dependent on knowledge of the soil conditions. Smaller roots in difficult imaging conditions require future work into understanding and compensating for unwanted noise. Ultimately, this paper sought to provide insight into improving imaging quality of ultra-wideband (UWB) imaging systems for plant root imaging for other works to be followed.
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Ismanov, Yu, N. Niyazov, and N. Dzhamankyzov. "Hybrid System Converting Solar Energy Into Electric Energy." Bulletin of Science and Practice 7, no. 9 (September 15, 2021): 12–26. http://dx.doi.org/10.33619/2414-2948/70/01.
Повний текст джерелаАнотація:
The article discusses a mathematical model of a hybrid system that combines photovoltaic and thermoelectric methods for converting concentrated solar energy into electrical energy. The specified mathematical model makes it possible to determine the temperatures of the photovoltaic module, as well as the temperature of the electrodes of the thermoelectric generator module. Optimal operating conditions have been determined for the hybrid system, taking into account the thermal contact resistance at the hot and cold sides of the thermoelectric generator. The simulation proceeded from the fact that only part of the absorbed solar radiation is converted into electricity due to the photoelectric effect, some part is lost due to radiation and convection from the upper surface of the photovoltaic module into the environment, and the rest is transferred to a thermoelectric generator connected to the lower part. photovoltaic module. A thermoelectric generator converts some of the thermal energy it receives from the photovoltaic module into electricity through the Seebeck effect, but most of it goes to the cooling system. The conversion of heat into electrical energy was based on the well-known Seebeck and Peltier effects. Along with these effects, such effects were taken into account as the formation of Joule heat due to the presence of electric current in the thermoelectric generator, Fourier thermal conductivity, as a consequence of the appearance of a temperature gradient in the transitions of a thermoelectric generator and Thomson heat, which arises both due to the presence of a temperature gradient, and electric current. The resulting model of the hybrid system makes it possible to study the effect of changing the temperature difference between the hot and cold electrodes of the thermoelectric generator and the resistance of the external circuit on the performance of the hybrid system. The model also allows the determination of the optimal operating conditions for the hybrid system, taking into account the thermal contact resistance on the hot and cold sides of the thermoelectric generator.
11
Bi, Ya Jun, and Hong Fei Li. "The Hardware Design and Implementation of Liquid Level Detection System for Lead-Acid Battery." Advanced Materials Research 860-863 (December 2013): 2850–54. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2850.
Повний текст джерелаАнотація:
The hardware structure of a liquid level detection system for lead-acid battery was briefly introduced. The system adopts AT89C51 MCU as host module, combined with display storage, extended storage and the watch dog technology. The slave module adopts AT89C2051 MCU, which driver the linear CCD to realize non-contact measurement in acidic and corrosive conditions. The infrared transmission module uses RS-232 serial-to-infrared technology to realize wireless data delivery. The damage due to sensor corrosion could be avoided in this system. Compared with other similar equipments, this system has the advantages of simple structure, small volume, low cost, high measure precision and convenient maintenance.
12
Guo, Kai, Chang Liu, Shasha Zhao, Jingxin Lu, Senhao Zhang, and Hongbo Yang. "Design of a Millimeter-Wave Radar Remote Monitoring System for the Elderly Living Alone Using WIFI Communication." Sensors 21, no. 23 (November 26, 2021): 7893. http://dx.doi.org/10.3390/s21237893.
Повний текст джерелаАнотація:
In response to the current demand for the remote monitoring of older people living alone, a non-contact human vital signs monitoring system based on millimeter wave radar has gradually become the object of research. This paper mainly carried out research regarding the detection method to obtain human breathing and heartbeat signals using a frequency modulated continuous wave system. We completed a portable millimeter-wave radar module for wireless communication. The radar module was a small size and had a WIFI communication interface, so we only needed to provide a power cord for the radar module. The breathing and heartbeat signals were detected and separated by FIR digital filter and the wavelet transform method. By building a cloud computing framework, we realized remote and senseless monitoring of the vital signs for older people living alone. Experiments were also carried out to compare the performance difference between the system and the common contact detection system. The experimental results showed that the life parameter detection system based on the millimeter wave sensor has strong real-time performance and accuracy.
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Man, Xiaolin, and Colby C. Swan. "A Mathematical Modeling Framework for Analysis of Functional Clothing." Journal of Engineered Fibers and Fabrics 2, no. 3 (September 2007): 155892500700200. http://dx.doi.org/10.1177/155892500700200302.
Повний текст джерелаАнотація:
In the analysis and design of functional clothing systems, it is helpful to quantify the effects of a system on a wearer's physical performance capabilities. Toward this end, a clothing modeling framework for quantifying the mechanical interactions between a given clothing system design and a specific wearer performing defined physical tasks is proposed. The modeling framework consists of three interacting modules: (1) a macroscale fabric mechanics/dynamics model; (2) a collision detection and contact correction module; and (3) a human motion module. In the proposed framework, the macroscopic fabric model is based on a rigorous large deformation continuum-degenerated shell theory representation. Material models that capture the stress-strain behavior of different clothing fabrics are used in the continuum shell framework. The collision and contact module enforces the impenetrability constraint between the fabric and human body and computes the associated contact forces between the two. The human body is represented in the current framework as an assemblage of overlapping ellipsoids that undergo rigid body motions consistent with human motions while performing actions such as walking, running, or jumping. The transient rigid body motions of each ellipsoidal body segment in time are determined using motion capture technology. The integrated modeling framework is then exercised to quantify the resistance that the clothing exerts on the wearer during the specific activities under consideration. Current results from the framework are presented and its intended applications are discussed along with some of the key challenges remaining in clothing system modeling.
14
Zeng, Sai Feng, Li Gu Zhu, and Lei Zhang. "Scalable Multimedia Archive Storage System Research." Applied Mechanics and Materials 380-384 (August 2013): 2367–70. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.2367.
Повний текст джерелаАнотація:
In the traditional file system, The lack of contact between the file name and the data content led to waste a lot of availability storage space, especially in large data archive storage system. This paper designs and implements a scalable multimedia archive storage system, called IMCAS. IMCAS use CAS store the archive data and use real-time monitor program automatically extract metadata information. through dynamic loading extraction module, the system can support variety of multimedia form.
15
Shimokura, Ken'ichiro, and Shin'yo Muto. "A Study of a Manipulation System with a Detection Module for Contact-state-transition." Journal of the Robotics Society of Japan 12, no. 6 (1994): 837–45. http://dx.doi.org/10.7210/jrsj.12.837.
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Guo, Da Zhong, Yuan Yuan Zou, Si Jun Zhu, and Ming Yang Zhao. "Study on Measurement of Spatial Motion Trajectory Based on Laser Tracing Measurement System." Advanced Engineering Forum 2-3 (December 2011): 358–61. http://dx.doi.org/10.4028/www.scientific.net/aef.2-3.358.
Повний текст джерелаАнотація:
In this paper an approach of measuring the positional precision of the execution terminal of the industrial robot is introduced, and the approach based on a non-contact laser tracing measurement has the advantage of high-speed response, high detection accuracy and non-contact measurement. This method utilizes the linear motion units and photo detection units to trace the target actively. The measurement of the target coordinates are measured with the laser interferometer linear measurement module and the grating ruler. This system can achieve the position measurement of the planar motion objects without contact in real-time condition and also possesses the high precision.
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Zhu, Zhishan, Aike Liu, and Haifei Chi. "Temperature measurement and identity detection system based on multiple embedded control units and LBP detection algorithm." E3S Web of Conferences 252 (2021): 01048. http://dx.doi.org/10.1051/e3sconf/202125201048.
Повний текст джерелаАнотація:
This paper designs a simple non-contact temperature measurement and identity recognition device based on multiple embedded control systems and feature recognition algorithms. The device can achieve multiple functions such as non-contact temperature measurement, face recognition, mask recognition, and smart alarm. The system consists of three parts: main control, interactive system and detection system: the main control selects STM32F407VGT6 to process the data returned by multiple sensors and realize the mutual communication of each system; the interactive system uses the HMI serial touch screen to realize the visualization of data and human Machine operation function; the detection system is equipped with MLX90614 temperature detection module and OpenMV4 machine vision module to realize functions such as temperature detection, face recognition and mask recognition[1]. In addition, in order to ensure the accuracy and stability of the detection results, this article specifically designs temperature data filtering and compensation algorithms, LBP feature detection algorithms and other intelligent algorithms. Through experiments, the accuracy of this device to detect 28°C-48°C is within 0.8°C, and the accuracy of identifying faces and masks is above 98%.
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Ao, Liang Bo, Yuan Sheng Li, Zhi Xun Wen, Lei Li, and Zhu Feng Yue. "Multidisciplinary Design Optimization Framework for Aeroengine Turbine Based on Life and Reliability." Advanced Materials Research 538-541 (June 2012): 2690–93. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.2690.
Повний текст джерелаАнотація:
The multidisciplinary design optimization(MDO) framework for aeroengine turbine based on life and reliability which covers the total process is developed. The framework consists of three parts: design module of parts, subsystem and system. The parametric model and optimization of turbine components such as rotor, stator, disk, casing and axle, can be created in parts design module. The interaction in subsystems, such as rotor-stator interaction, blade-casing gap and tenon-mortise contact problem can be solved in subsystem design module. The system design module can give out the global optimal solution of the whole turbine. The MDO for an aeroengine turbine using this framework has been taken, the results show that the framework is available.
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Gursky, Volodymyr, and Igor Kuzio. "Dynamic Analysis of a Rod Vibro-Impact System with Intermediate Supports." Acta Mechanica et Automatica 12, no. 2 (June 1, 2018): 127–34. http://dx.doi.org/10.2478/ama-2018-0020.
Повний текст джерелаАнотація:
Abstract The two-mass resonant vibro-impact module is presented as the rod system with cylindrical intermediate supports. The corresponding design diagram is constructed. Based on the finite element method, the frequency of free oscillations is defined for the corresponding location of the intermediate supports. A stress-strain state of the elastic element is considered. The stiffness of the intermediate supports is defined by solving the contact problem between the cylindrical rod supports and the flat spring. The dynamics of the vibro-impact rod system with multiple natural frequencies is analyzed taking into account the contact stiffness of the intermediate supports. The determination of contact and equivalent stresses occurring during the operation of the vibro-impact rod system is performed.
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Yu, Chun Xuan, and Wei Zhao. "Design and Application of the Multifunctional Digital Automobile Instrument." Advanced Materials Research 383-390 (November 2011): 2073–76. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2073.
Повний текст джерелаАнотація:
According to the developmental trend of modern automobile instrument, this paper puts forward a multifunctional digital instrument based on the embedded Linux system. The digital instrument panel consists of embedded microprocessor and contact screen, and it could not only receive and process all kinds of driving information from peripheral interface and display the results on the LCD, but also has the function of aided parking. This paper proposes an integrated design solution for the digital instrument. The design selects the TI’s TMS320DM355, which includes LCD and contact screen module, CAN bus module, LIN bus module, video-in and audio-out. The digital instrument can receive real-time data, and also process the data and store it in the RAM and display all vehicle operating parameters in the LCD and realizes real time monitoring in backing up. Based on the experiment, it is proved that the designed system reaches the primary design specifications.
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Sung, Eunho, Chang-hoon Seo, Hyunmin Song, Byungjoo Choi, Yongho Jeon, Young-Man Choi, Kihyun Kim, and Moon G. Lee. "Design and experiment of noncontact eddy current damping module in air bearing–guided linear motion system." Advances in Mechanical Engineering 11, no. 8 (August 2019): 168781401987142. http://dx.doi.org/10.1177/1687814019871424.
Повний текст джерелаАнотація:
As a method for reducing the friction of high-precision system, air bearings have been widely used for various industrial applications. However, their small damping leads to poor in-position stability and therefore systems are susceptible to residual vibration and disturbance. In this study, a linear motion stage which is guided by air bearing for a noncontact eddy current damping module is proposed. The eddy current damping module consists of a Halbach array of permanent magnets and a fixed conductor plate. An eddy current is generated in the conductor in the direction opposing the change in the magnetic field when the magnets move, after which the resistivity in the conductor dissipates the kinetic energy of the moving part; therefore, the module has a damping effect without contact and system is shown good in-position stability. In order to specify the damping effect, the motion of the moving part was experimentally analyzed. The step response confirmed that the eddy current damping module can improve the performance of the positioning system: the settling time decreased by 36.8% and the resolution improved by 59.4%. These improvements verify that eddy current damping is a suitable method for application in precision industries.
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Wang, Hui Feng, and Xiao Hua Liu. "Research and Implementation of Positioning System Based on Ultrasonic." Applied Mechanics and Materials 423-426 (September 2013): 2439–42. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.2439.
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This paper presents an ultrasonic ranging system based on 52 single chip microcomputer. The hardware circuit of the system includ the microcontroller circuit, display circuit, power supply circuit, etc.. The system measures datas by ultrasonic module, then the The measurement results are processed and calculated, and finally showed the actual distance on the digital tube. The system is reliable, the ranging function whith non-contact can realized by ultrasonic.
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Wang, Hong Yi, Qing Yang, Jian Fei Wu, and Jian Cheng Li. "A Novel Implementation of UHF RFID Reader." Applied Mechanics and Materials 190-191 (July 2012): 642–46. http://dx.doi.org/10.4028/www.scientific.net/amm.190-191.642.
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The radio frequency identification technology is a kind of emerging non-contact identification technology. In the study of radio frequency identification reader, the traditional microcontroller-based architecture can’t meet the system requirements due to the limited processing ability. In this paper, the author designs a UHF RFID reader based on the ARM processor and FPGA, compared to the microcontroller-based architecture, the reader deals faster. The reader consists of three parts, namely, the protocol processing module, the digital baseband module and the RF module.
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Torok, John, Brian Beaman, William Brodsky, Shawn Canfield, Jason Eagle, Theron Lewis, Mark Hoffmeyer, Arvind Sinha, and Yuet-Ying Yu. "Large Form Factor Hybrid LGA Interconnects; Recent Applications and Technical Learning." International Symposium on Microelectronics 2014, no. 1 (October 1, 2014): 000550–60. http://dx.doi.org/10.4071/isom-wa65.
Повний текст джерелаАнотація:
Recent high-end server design trends have continued to challenge electronic packaging engineers to design and integrate larger form factor land grid array (LGA) attached modules within their assemblies. These trends have included the application of larger, denser, organic packaged modules whose electrical performance and postencapsulation physical characteristics have been enabled by both the continued development of hybrid LGA connectors as well as new module actuation hardware designs. In this paper, we'll discuss these recent trends, including the specific technical attributes and challenges that need to be addressed to ensure a repeatable and reliable assembly design is developed. Initially, overviews of the latest connector and module design trends, including styles and physical sizes and their implications to the module's bottom surface metallurgy (BSM) flatness requirements, etc. are provided. Pursuant to this, recent system integration trending is reviewed; including both the module quantity per system assembly as well as module to module physical placements and how each of these impact printed wiring board (PWB) design (i.e., layer count, LGA site flatness, etc.) as well as the PWB assembly's solder processing characteristics (i.e., LGA pre- and post-solder attach contact co-planarity, etc.). Completing the application portion, is a description of some recent LGA actuation hardware and module external cooling apparatus designs (e.g., air-cooled heats sinks and water-cooling cold-plates and thermal interface materials (TIMs), etc.). The remaining portion of the paper is dedicated to the description of the mechanical analysis efforts completed to provide a fundamental understanding of the design's “as-assembled” attributes and a review of the associated evaluation completed to verify the integrated assembly's reliability characteristics. From the analysis methodology perspective, both the means of including each of the integrated assembly's key attributes (e.g., module mechanical construction and as encapsulated flatness, LGA contact compliance and stiffness as well as soldered contact coplanarity, TIM stiffness, actuation hardware, heat sink and cold-plate mechanical construction, etc.) and the resulting estimation of the predicted module internal TIM and hybrid-LGA's Pb-free soldered interface strains, actuation hardware stresses and LGA contact load variation are provided. Completing the discussion is a review of the variety of testing executed to validate the design's intended reliability. Included in this is a description of the test vehicle's design, the environmental stress testing conducted (i.e., mechanical pre-conditioning, accelerated thermal cycling (ATC), mixed flowing gas (MFG) and heat aging (HA), etc.) and the resulting data.
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Huang, Frank Y. C., and Allie Arning. "Performance Comparison between Polyvinylidene Fluoride and Polytetrafluoroethylene Hollow Fiber Membranes for Direct Contact Membrane Distillation." Membranes 9, no. 4 (April 11, 2019): 52. http://dx.doi.org/10.3390/membranes9040052.
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Increasing water demand coupled with projected climate change puts the Southwestern United States at the highest risk of water sustainability by 2050. Membrane distillation offers a unique opportunity to utilize the substantial, but largely untapped geothermal brackish groundwater for desalination to lessen the stress. Two types of hydrophobic, microporous hollow fiber membranes (HFMs), including polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF), were evaluated for their effectiveness in direct contact membrane distillation (DCMD). Water flux and salt rejection were measured as a function of module packing density and length in lab-scale systems. The PVDF HFMs generally exhibited higher water flux than the PTFE HFMs possibly due to thinner membrane wall and higher porosity. As the packing density or module length increased, water flux declined. The water production rate per module, however, increased due to the larger membrane surface area. A pilot-scale DCMD system was deployed to the 2nd largest geothermally-heated greenhouse in the United States for field testing over a duration of about 22 days. The results demonstrated the robustness of the DCMD system in the face of environmental fluctuation at the facility.
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Qi, Jirong, He Liao, Yufei Xu, Zhu Zhu, and Chaolan You. "Event-Triggered Attitude-Tracking Control for a Cableless Non-Contact Close-Proximity Formation Satellite." Aerospace 9, no. 3 (March 4, 2022): 138. http://dx.doi.org/10.3390/aerospace9030138.
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The cablelessness of non-contact close-proximity formation satellites can fundamentally avoid the influence of non-contact interface coupling effects and can further enhance the attitude pointing accuracy and stability of the payload module (PM). However, it also brings the problem of limited on-board resources and system latency. In this paper, an event-triggered attitude tracking controller of the support module (SM) that avoids the Zeno phenomenon was proposed. The update time of the control signal was determined by the event-triggering mechanism based on intermediate variables, thus, reducing the communication burden and actuator asynchrony between the two modules. The feasibility and effectiveness of the proposed approach was demonstrated by numerical simulations.
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Hua, D. Y., K. Farhang, and L. E. Seitzman. "A Multi-Scale System Analysis and Verification for Improved Contact Fatigue Life Cycle of a Cam-Roller System." Journal of Tribology 129, no. 2 (January 9, 2007): 321–25. http://dx.doi.org/10.1115/1.2540572.
Повний текст джерелаАнотація:
Surface distress in the form of contact fatigue is encountered in cam-roller systems. The contact fatigue appears to be initiated at micrometer-scale subsurface region. High stress is a result of the macro-scale requirement on the cam-roller motion event that produces high contact loads due to inertia of the roller and its follower link. Sliding of the roller and its impact onto the cam surface further compounds the detrimental effect of contact load. While conventionally a Hertz contact stress analysis can be used in ascertaining contact stress and maximum subsurface von Mises stress, it generally underestimates the stress when compared to the micrometer-scale subsurface stresses due to the presence of surface roughness. Contact analyses of cam and roller with rough surfaces are performed to examine the effects of two surface treatments. These involve surface finishing process in which a surface is rendered smooth, and the addition of a coating to the roller surface. Measurements of such cam and roller surfaces are used in micro-contact analysis module of a Surface Distress Analytical Toolkit to examine the effect of surface finish and coating on maximum subsurface stress. It is found that smooth surface provides a 53% reduction in maximum subsurface stress. The analysis also shows that the addition of coating further reduces subsurface stress nearly 7%. The impact of the combined treatment of the surface is an increase in contact fatigue life of the cam-roller system by nearly two orders of magnitude. The above findings are confirmed by laboratory tests using six rollers with various degrees of finishing processes, and with and without addition of coating to the surfaces. Examination of the rollers indicates a general improvement in roller performance due to addition of coating. Most notably, the combination of finishing process and coating was found to provide the best contact fatigue life since the corresponding rollers showed no observable wear even after testing for 2161h, or the same number of cycles accumulated over about 500,000 truck miles.
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Zhao, Zhi Qiang, and Ye Zhuang Tian. "Ecological Circulation System of Organization." Advanced Materials Research 869-870 (December 2013): 929–34. http://dx.doi.org/10.4028/www.scientific.net/amr.869-870.929.
Повний текст джерелаАнотація:
The organization is a multi-leveled system. The ecological circulation system is the cycle module and the safeguard mechanism to maintain the dynamic cycle system and activities between the enterprise development and the enterprise external environment. In this paper, we discuss ecological circulation system of organization. We conduct the model of organization ecological cycle system, and analyze the exchange cycle between the enterprise organization and market and between organization and society. The results show that environment which organizations live in is complicated and changeful. Any organization doesn't exist in isolation. The organization must combine with other organizations, natural environment and social environment etc to constitute a whole of mutual contact, mutual restriction and interdependence.
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Guo, Shun Jing, and Wei Zhang. "Design of Gas Monitor System Based on ARM & Linux." Applied Mechanics and Materials 143-144 (December 2011): 819–22. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.819.
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The paper presents and designs a new-style gas monitor terminal in coal mine based on ARM chip called S3C2410A, which means the hardware and driver's designation of system uses S3C2410A as its central processing unit and also expounds the detail of software and hardware design. The system communicates with metrical instrument by the RS485 BUS. It can monitor the mine gas in network. It has good man-machine interaction contact surface and can be inserted into intelligence instrument as a general module.
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Ding, Jian Jun, Zhuang De Jiang, Bing Li, and Jun Jie Guo. "Study on the Composite Measuring Method for Small Module Gears." Key Engineering Materials 381-382 (June 2008): 83–86. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.83.
Повний текст джерелаАнотація:
The detection technique of small module gears has a very important research and application value. In this paper, a composite measuring method is presented based on combining traditional mechanical contact measurement with optical image non-contact measurement. First of all, this paper analyzes the basic principle of composite probe composed of optical fiber stylus and CCD imaging system. The tail-end of the stylus is shaped into a micro-sphere, where a small refection mirror is designed. When the laser is transmitted through the fiber, a round facula can be seen from the CCD camera. The micro-sphere is kept contact with the surface of the measured gear at the time of measuring and the error of the measured gear will be reflected by the offset of the facula center. Meanwhile, the sub-pixel extraction algorithm for the center of facula image is presented. Then the calibration principle and method of probe system is analyzed in detail. Finally, the data processing principle of the presented method is discussed for gear measurement.
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Guo, Shun Jing, and Jing Li. "Design of Gas On-Line Monitoring System Based on STM32 & Linux." Advanced Materials Research 722 (July 2013): 379–83. http://dx.doi.org/10.4028/www.scientific.net/amr.722.379.
Повний текст джерелаАнотація:
A new portable gas detect & alarm device which is controlled by Single Chip Micyoco is proposed in this paper, which means the hardware and drivers designation of system uses STM32F103 as its central processing unit and also expounds the detail of software and hardware design. The system communicates with metrical instrument by the RS485 BUS. It can monitor the mine gas in network. It has good man-machine interaction contact surface and can be inserted into intelligence instrument as a general module.
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Liu, Yu-Hsin, Vincentius Surya Kurnia Adi, and Shing-Yi Suen. "Heat-Integration of Solar-Heated Membrane Distillation and Fuel Cell for Desalination System Based on the Dynamic Optimization Approach." Processes 10, no. 4 (March 29, 2022): 663. http://dx.doi.org/10.3390/pr10040663.
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The heat integration feasibility of the proton exchange membrane fuel cell (PEMFC) coupled with the solar-heated direct contact membrane distillation (DCMD) module is evaluated in this study. The additional waste heat from the PEMFC increases the DCMD system’s ability to produce fresh water and electricity. Two systems units to be assessed mainly include a flat plate solar collector, a heat storage tank with an internal heat exchanger, and the DCMD module with and without the PEMFC module. The importance of daily operation continuity is emphasized through a preliminary dynamic simulation and proper sizing of the solar-heated DCMD distillation. Sensitivity analysis is implemented to analyze the relationship between the essential variables and the daily freshwater production. The design variables of both configurations are rigorously optimized in terms of minimum unit production cost (UPC). The proposed heat integration feasibility is evaluated to obtain critical insights on the design strategy of the hybrid systems.
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Liu, Xingliang, Guiyun Tian, Yu Chen, Haoze Luo, Jian Zhang, and Wuhua Li. "Non-Contact Degradation Evaluation for IGBT Modules Using Eddy Current Pulsed Thermography Approach." Energies 13, no. 10 (May 21, 2020): 2613. http://dx.doi.org/10.3390/en13102613.
Повний текст джерелаАнотація:
In this paper, a non-contact degradation evaluation method for insulated gate bipolar transistor (IGBT) modules is proposed based on eddy current pulsed thermography approach. In non-contact heat excitation procedures, a high-power induction heater is introduced to generate heat excitation in IGBT modules. The thermographs of the whole temperature mapping are recorded non-invasively by an IR camera. As a result, the joint degradation of IGBT modules can be evaluated by the transient thermal response curves derived from the recorded thermographs. Firstly, the non-destructive evaluation principle of the eddy current pulsed thermography (ECPT) system for an IGBT module with a heat sink is introduced. A 3D simulation module is built with physical parameters in ANSYS simulations, and then thermal propagation behavior considering the degradation impact is investigated. An experimental ECPT system is set up to verify the effectiveness of the proposed method. The experimental results show that the delay time to peak temperature can be extracted and treated as an effective indicative feature of joint degradation.
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Lu, Shiue-Der, Meng-Hui Wang, Shao-En Wei, Hwa-Dong Liu, and Chia-Chun Wu. "Photovoltaic Module Fault Detection Based on a Convolutional Neural Network." Processes 9, no. 9 (September 10, 2021): 1635. http://dx.doi.org/10.3390/pr9091635.
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With the rapid development of solar energy, the photovoltaic (PV) module fault detection plays an important role in knowing how to enhance the reliability of the solar photovoltaic system and knowing the fault type when a system problem occurs. Therefore, this paper proposed the hybrid algorithm of chaos synchronization detection method (CSDM) with convolutional neural network (CNN) for studying PV module fault detection. Four common PV module states were discussed, including the normal PV module, module breakage, module contact defectiveness and module bypass diode failure. First of all, the defects in 16 pieces of 20W monocrystalline silicon PV modules were preprocessed, and there were four pieces of each fault state. When the signal generator delivered high frequency voltage to the PV module, the original signal was measured and captured by the NI PXI-5105 high-speed data acquisition system (DAS) and was calculated by CSDM, to establish the chaos dynamic error map as the image feature of fault diagnosis. Finally, the CNN was employed for diagnosing the fault state of the PV module. The findings show that after entering 400 random fault data (100 data for each fault) into the proposed method for recognition, the recognition accuracy rate of the proposed method was as high as 99.5%, which is better than the traditional ENN algorithm that had a recognition rate of 86.75%. In addition, the advantage of the proposed algorithm is that the mass original measured data can be reduced by CSDM, the subtle changes in the output signals are captured effectively and displayed in images, and the PV module fault state is accurately recognized by CNN.
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Lv, Qiang, Pei Pei Ni, Guo Sheng Wang, and Feng Liu. "Design of Quadrotor’s Control System Based on DSP." Advanced Materials Research 989-994 (July 2014): 3216–19. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3216.
Повний текст джерелаАнотація:
A problem of quadrotor’s control system based on DSP is investigated in this paper. STMS320F28335 is used as the main processer, due to its advantages of high-speed processing capability and powerful floating point processing capability. The inertial measurement unit is selected for inner-loop attitude control, while the optical flow sensor is adopted for outer-loop attitude compensation. Infrared range finder is choosed for altitude control with PID method. Quadrotor uses XBee-Pro wireless module to contact with ground station and sends statement information in accordance with the Mavlink protocol. Test results show that the control system is reliable and can meet the requirement of the attitude control system.
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Rai, Ashutosh, Pankaj Kumar Yadav, and Awdhesh Gupta. "A Refrigerator without Compressor Powered by Solar Energy." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 8, no. 01 (June 25, 2016): 06–10. http://dx.doi.org/10.18090/samriddhi.v8i1.11406.
Повний текст джерелаАнотація:
Thermoelectric refrigerator with an inner volume of 10 litre (approx.) has been designed and tested, whose cold system is composed of a Peltier and a fan (i.e. heat sink).Analysis of a its performance in different conditions has been carried out with this prototype. Thermoelectric devices are capable of converting electrical energy into thermal heat pumping at a very high efficiency.The cooling system is made up of one thermoelectric device, composed of a Peltier module (40 watt) with its hot side in contact with a heat sink and aluminum plate in contact with the cold side.
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Yousuf, Hasnain, Muhammad Aleem Zahid, Muhammad Quddamah Khokhar, Jinjoo Park, Minkyu Ju, Donggun Lim, Youngkuk Kim, Eun-Chel Cho, and Junsin Yi. "Cell-to-Module Simulation Analysis for Optimizing the Efficiency and Power of the Photovoltaic Module." Energies 15, no. 3 (February 5, 2022): 1176. http://dx.doi.org/10.3390/en15031176.
Повний текст джерелаАнотація:
A 60-cell photovoltaic (PV) module was analyzed by optimizing the interconnection parameters of the solar cells to enhance the efficiency and increase the power of the PV module setup. The cell-to-module (CTM) losses and gains varied substantially during the various simulation iterations. Optimization was performed to inspect and augment the gain and loss parameters for the 60-cell PV module. The power and efficiency of the module were improved by refining several parameters, such as number of busbars, size of the contact pads, interconnected ribbon width, thickness of the core, and distance between the solar cells and strings, to obtain the maximum efficiency of 21.09%; the CTM efficiency achieved was 94.19% for the proposed strategy related to the common interconnection setup of the ribbon-based system. The CTM efficiency was improved by optimizing the geometrical, optical, and electrical parameters precisely, the power enhancement was up to 325.3 W, and a CTM power of 99.1% was achieved from a standard PV module with rectangular ribbon interconnections.
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Kim, Jung Woo, Sang Hun Sul, and Jae Boong Choi. "Development of real-time Internet of Things motion detection platform applying non-contact sensor based on open source hardware." International Journal of Distributed Sensor Networks 16, no. 7 (July 2020): 155014772094402. http://dx.doi.org/10.1177/1550147720944024.
Повний текст джерелаАнотація:
Recently, Internet-based devices have evolved into platforms for new networks, with Internet of Things technology being applied in various areas. The expansion of scope of this technology and exchange of real-time information enables users to check their content whenever. The real-time Internet of Things motion detection platform has been developed to detect and monitor users in installed spaces. In this article, the real-time Internet of Things motion detection platform utilizes a non-contact sensor module and motion recovery printed circuit board module to quickly respond to emergency situations through real-time monitoring. This is visualized on the display by sending data extracted from the motion recovery printed circuit board module combined with open source hardware by the non-contact sensor module receiving information from smartphone users. The administrator’s display continuously analyzes real-time moving objects by detecting them with respect to location coordinates and providing automatically recognized data to the cloud server. In addition, real-time Internet of Things motion detection monitoring system was configured to quickly respond to real-time alerts and effectively manage problems. Therefore, installing real-time Internet of Things motion detection platform at an actual site will enable quick resolving of emergency situations through information provision and user awareness monitoring.
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Gierlak, Piotr. "Adaptive Position/Force Control of a Robotic Manipulator in Contact with a Flexible and Uncertain Environment." Robotics 10, no. 1 (February 12, 2021): 32. http://dx.doi.org/10.3390/robotics10010032.
Повний текст джерелаАнотація:
The present paper concerns the synthesis of robot movement control systems in the cases of disturbances of natural position constraints, which are the result of surface susceptibility and inaccuracies in its description. The study contains the synthesis of control laws, in which the knowledge of parameters of the susceptible environment is not required, and which guarantee stability of the system in the case of an inaccurately described contact surface. The novelty of the presented solution is based on introducing an additional module to the control law in directions normal to the interaction surface, which allows for a fluent change of control strategy in the case of occurrence of distortions in the surface. An additional module in the control law is perceived as a virtual viscotic resistance force and resilient environment acting upon the robot. This interpretation facilitates intuitive selection of amplifications and allows for foreseeing the behavior of the system when disturbances occur. Introducing reactions of virtual constraints provides automatic adjustment of the robot interaction force with the susceptible environment, minimizing the impact of geometric inaccuracy of the environment.
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Zhang, Runzhe, Yi Yang, Eric Maggard, Yousun Bang, Minki Cho, and Jan Allebach. "A comprehensive system for analyzing the presence of print quality defects." Electronic Imaging 2020, no. 9 (January 26, 2020): 314–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.9.iqsp-314.
Повний текст джерелаАнотація:
Print quality (PQ) is most important in the printing industry. It plays a role in users’ satisfaction with their products. Page quality will be degraded when there are print quality defects on the printed page, which could be caused by the electrophotographic printer (EP) process and associated print mechanism. To identify the print quality issue, customers have to consult a printer user manual or contact customer service to describe the problems. In this paper, we propose a comprehensive system to analyze the printed page automatically and extract the important defect features to determine the type and severity of defects on the scanned page. This system incorporates many of our previous works. The input of this system is the master digital image and the scanned image of the printed page. The comprehensive system includes three modules: the region of interest (ROI) extraction module, the scanned image pre-processing module (image alignment and color calibration procedure), and the print defect analysis module (text fading detection, color fading detection, streak detection, and banding detection). This system analyzes the scanned images based on different ROIs, and each ROI will produce a printer defect feature vector. The final output is the whole feature vector including all the ROI feature vectors of the printed page, and this feature vector will be uploaded to customer service to analyze the printer defect.
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Choi, Jihyeok, Yongjun Choi, Juyoung Lee, Yusik Kim, and Sangho Lee. "Exergy Analysis of a Direct Contact Membrane Distillation (DCMD) System Based on Computational Fluid Dynamics (CFD)." Membranes 11, no. 7 (July 13, 2021): 525. http://dx.doi.org/10.3390/membranes11070525.
Повний текст джерелаАнотація:
Understanding the energy efficiency of direct contact membrane distillation (DCMD) is important for the widespread application and practical implementation of the process. This study analyzed the available energy, known as exergy, in a DCMD system using computational fluid dynamics (CFD). A CFD model was developed to investigate the hydrodynamic and thermal conditions in a DCMD module. After the CFD model was verified, it was used to calculate the temperature polarization coefficient (TPC) and exergy destruction magnitudes under various operating conditions. The results revealed that slight decreases and increases in the TPC occurred with distance from the inlet in the module. The TPC was found to increase as the feed temperature was reduced and the feed and permeate flow rates were increased. The exergy destruction phenomenon was more significant under higher feed temperatures and higher flux conditions. Although the most significant exergy destruction in the permeate occurred near the feed inlet, the effect became less influential closer to the feed outlet. An analysis of exergy flows revealed that the efficiency loss in the permeate side corresponded to 32.9–45.3% of total exergy destruction.
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Zhao, Qin, Houcheng Zhang, Ziyang Hu, and Shujin Hou. "A solar driven hybrid photovoltaic module/direct contact membrane distillation system for electricity generation and water desalination." Energy Conversion and Management 221 (October 2020): 113146. http://dx.doi.org/10.1016/j.enconman.2020.113146.
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He, Chuan, Xiaoquan Zhang, Yulong Gui, Yang Liu, and Wei Zhang. "Mathematical Modeling and Simulation of Table Tennis Trajectory Based on Digital Video Image Processing." Advances in Mathematical Physics 2021 (December 23, 2021): 1–11. http://dx.doi.org/10.1155/2021/7045445.
Повний текст джерелаАнотація:
Digital sports training based on digital video image processing promises to reduce the reliance on the experience of coaches in the table tennis training process and to achieve a more general physical education base. Based on this approach, this paper describes the specific forms of exercise content, movement characteristics, and skill levels in the table tennis framework and specifies the calculation methods of motion capture and movement characteristics suitable for table tennis. Meanwhile, to further improve the accuracy of the inertial motion capture system in restoring the position posture of the trainees, this paper improves the original inertial motion capture system from two aspects: contact judgment of both feet and correction of the position posture based on the contact position constraint. The simulation results show that the corrected human posture has good action smoothness. This paper first proposes a knowledge-based generic sports-assisted training framework based on generalizing the traditional sports training model. The framework contains four main modules: domain knowledge, trainees, sport evaluation, and controller. The domain knowledge module is a digital representation of the knowledge of the exercise content, improvement instructions, and skill indicators of the sport; the trainee module is the active response of the trainee to the exercise content and improvement instructions; the motion evaluation module uses motion capture technology to obtain the raw motion data of the trainee and further calculates the motion characteristics; the controller module proposes improvement instructions to the trainee or makes him/her practice new content based on the results of the motion evaluation. Based on the results of the motion evaluation, the controller module proposes improvement instructions or makes the trainee practice new content until the trainee achieves the desired goal.
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Moriyama, Takayuki, and Takashi Nitta. "Splitting theorem for sheaves of holomorphic k-vectors on complex contact manifolds." International Journal of Mathematics 29, no. 13 (December 2018): 1850091. http://dx.doi.org/10.1142/s0129167x1850091x.
Повний текст джерелаАнотація:
A complex contact structure [Formula: see text] is defined by a system of holomorphic local 1-forms satisfying the completely non-integrability condition. The contact structure induces a subbundle [Formula: see text] of the tangent bundle and a line bundle [Formula: see text]. In this paper, we prove that the sheaf of holomorphic [Formula: see text]-vectors on a complex contact manifold splits into the sum of [Formula: see text] and [Formula: see text] as sheaves of [Formula: see text]-module. The theorem induces the short exact sequence of cohomology of holomorphic [Formula: see text]-vectors, and we obtain vanishing theorems for the cohomology of [Formula: see text].
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Li, Valeriy, Lyudmila Demina, and Sergey Vlasenko. "Assessment of the concrete part of the contact system supports in the field." E3S Web of Conferences 164 (2020): 03028. http://dx.doi.org/10.1051/e3sconf/202016403028.
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This article describes the issues of historical tour to the development of the supporting facilities fleet on the electrified railways of Russia; it considers the causal relationships of defect formation in reinforced concrete supports of the contact line. For the given operating conditions, a 3D model of the interior bracket-type reinforced concrete support was created in the SolidWorks software package. Using the SolidWorks Simulation module, the engineering review of the reinforced concrete support tension was made using the developed computation algorithm. 3D images of the support model were visualized from operating loads under design conditions and the values of the strain in the support height subject to the exposure to additional factors.
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Chen, Yang, and Fuchun Sun. "Adaptive stable grasping control strategy based on slippage detection." Industrial Robot: the international journal of robotics research and application 48, no. 4 (April 9, 2021): 569–76. http://dx.doi.org/10.1108/ir-01-2021-0024.
Повний текст джерелаАнотація:
Purpose The authors want to design an adaptive grasping control strategy without setting the expected contact force in advance to maintain grasping stable, so that the proposed control system can deal with unknown object grasping manipulation tasks. Design/methodology/approach The adaptive grasping control strategy is proposed based on bang-bang-like control principle and slippage detection module. The bang-bang-like control method is designed to find and set the expected contact force for the whole control system, and the slippage detection function is achieved by dynamic time warping algorithm. Findings The expected contact force can adaptively adjust in grasping tasks to avoid bad effects on the control system by the differences of prior test results or designers. Slippage detection can be recognized in time with variation of expected contact force manipulation environment in the control system. Based on if the slippage caused by an unexpected disturbance happens, the control system can automatically adjust the expected contact force back to the level of the previous stable state after a given time, and has the ability to identify an unnecessary increasing in the expected contact force. Originality/value Only contact force is used as feedback variable in control system, and the proposed strategy can save hardware components and electronic circuit components for sensing, reducing the cost and design difficulty of conducting real control system and making it easy to realize in engineering application field. The expected contact force can adaptively adjust due to unknown disturbance and slippage for various grasping manipulation tasks.
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Herrmanny, Katja, Michael Schwarz, Katrin Paldán, Nils Beckmann, Jennifer Sell, Nils-Frederic Wagner, and Aysegül Dogangün. "Designing a Holistic Behavior Change Support System for Healthy Aging." i-com 16, no. 2 (August 28, 2017): 99–111. http://dx.doi.org/10.1515/icom-2017-0008.
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AbstractIn this paper, we describe the development of a behavior change support system to improve health. The system is designed for people in the age range of 50–65 with an interdisciplinary approach. The basic structure of the presented system consists of two main modules: a monitoring module to collect and analyze data and an intervention module to support behavior changes. Based on the results of a requirements analysis and findings gathered from a conducted literature review and own analyses, the behavior change system addresses the following lifestyle areas: physical activity, nutrition, mental fitness, sleep, and nature contact. We outline how the concept is developed with regards to the results of the requirements analysis and psychological foundations to explain and predict motivation and behavior change processes. We describe how single system components match phases of behavior change models and how they were implemented into an Android application. Finally, we present the results of usability studies where the comprehensibility of the concept and application was tested together with the usability of navigation structure and design. The results show that the target group is able to understand the concept and can navigate through the system easily.
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Balbir Singh, Usman Ikhtiar, Mohamad Firzan, Dong Huizhen, and Kamarul Arifin Ahmad. "Numerical Analysis of a Mobile Leakage-Detection System for a Water Pipeline Network." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 87, no. 1 (September 10, 2021): 134–50. http://dx.doi.org/10.37934/arfmts.87.1.134150.
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The leakages in water pipeline networks sometimes negatively affect the environment, health, and economy. Therefore, leak detection methods play a crucial role in detecting and localizing leaks. These methods are categorized into internal and external detection methods, each having its advantages and certain limitations. The internal system has its detection based on the field sensors to monitor internal pipeline parameters such as temperature and pressure, thereby inferring a leak. However, the mobility of the sensing module in the pipeline is affected by the model drag coefficient. The low drag coefficient causes the module to quickly lost control in the pipeline leading to false detection. Therefore, this study is about designing and numerically analysing a new model to achieve a higher drag value of the sensing system. The drag value of various models is determined with the help of CFD simulations in ANSYS. The outcome of this study is a new model with a drag value of 0.6915. It was achieved by implementing an aerodynamic shape, a more significant surface contact area in the middle, and canted fins at the front of the . Both pressure, drag, and skin friction were increased, so a higher drag value of the sensing module can be achieved. Through this, the mobility and control of modules in the pipeline can be improved, improving leak detection accuracy.
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Tseng, Kuo-Hsiung, Meng-Yun Chung, Wei-Hong Jhou, Wei-Jer Chang, and Chen-Han Xie. "Development of Non-Contact Real-Time Monitoring System for Animal Body Temperature." Proceedings of Engineering and Technology Innovation 21 (April 22, 2022): 27–33. http://dx.doi.org/10.46604/peti.2022.8870.
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Body temperature is an important indicator of health monitoring. However, since animals are covered with fur, it is difficult to obtain their accurate body temperature with the traditional infrared measurement technology. To deal with this problem, this research proposes a non-contact real-time monitoring system using an infrared method combined with object detection. The system is developed based on general infrared thermal imaging technology and an infrared thermal imaging module with an image tracking algorithm. YOLO is used to detect animals, and a thermal imaging camera is used to measure the body surface temperature of animals. The result shows that the proposed system can accurately measure the body temperature of animals without being influenced by animals’ fur. In the future, it can be applied to monitor the body temperature of sick animals in veterinary hospitals.
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Farooq, Mohammad Haasin, Muhammad Zain, Muhammad Bilal Khalid, and Saima Zafar. "Easy-Weigh-Out: Design and Implementation of Internet of Things-based Smart Luggage System." International Journal of Online and Biomedical Engineering (iJOE) 17, no. 03 (March 9, 2021): 37. http://dx.doi.org/10.3991/ijoe.v17i03.17165.
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The Internet of Things (IoT) has dominated the digital world by enabling thousands of physical devices to communicate with each other and share useful data over the Internet. With use cases spanning every sphere of modern life, the IoT is all set to revolutionize the traveling sector by extending services associated with safety, security, surveillance, tracking, comfort, and a lot more. This paper presents the design and implementation of a prototype Easy-Weigh-Out, based on the principles of the IoT which enables a user to run Android-based mobile application and view the weight of luggage and track its location without any contact with it. The hardware of the system is built around Arduino UNO microcontroller which interfaces with a load cell (20 kg) via A/D converter and a NEO-6M Global Positioning System (GPS) module for tracking of the bag. The system uploads data to a Cloud server using ESP8266 Wi-Fi module. Our results show the real-time weight and tracking of the bag at a click of a button as well as long-term data logging.