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1
MacDougall, Christopher. "INTEGRATING A GROUND WEATHER DATA ACQUISITION SYSTEM AND AN AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607388.
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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaDuring engine and airfield performance testing it is often necessary to acquire weather data at the airfield where the test is being conducted. The airborne data acquisition system (DAS) acquires data associated with flight parameters. A separate system records airport weather conditions. Many times the separate system is an Automated Terminal Information Service (ATIS) or the ground crew relaying wind speed, wind direction and temperature from a weather station. To improve this system, the weather station is designed to acquire and store the data in memory. Utilizing a second DAS that is remote to the airborne DAS poses several problems. First, it is undesirable to have many different data acquisition systems from which to process data. The problem then develops into one of integrating the ground weather DAS with the existing airborne DAS. Other problems of system integrity, compatibility and FCC licensing exist. Complete system integration while maintaining integrity and compatibility is overcome by controlling signal format, flow and timing and is discussed in detail. Further discussion of the issue of transmission is overcome by a technique called spread-spectrum and is used in accordance with FCC rules and regulations.
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Chepetan, Adrian. "Microcontroller based Data Acquisition System." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62200.pdf.
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Kpodzo, Elias, Marc DiLemmo, and Wearn-Juhn Wang. "Wireless Rotor Data Acquisition System." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595665.
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ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, NevadaFlight test data acquisition systems have been widely deployed in helicopter certification programs for a few decades. A data acquisition system uses a series of strategically placed sensors to provide instantaneous status condition of the helicopter's components and structure. However, until recently, it has been difficult to collect flight test data from helicopter rotors in motion. Traditional rotor solutions have used slip rings to electrically connect fixed and rotating mechanical elements; but slip rings are inconvenient to use, prone to wear, and notoriously unreliable.
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Maschhoff, Robert H., and David W. Johnson. "FLIGHT TEST DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608871.
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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaThis paper describes a data acquisition system with integral signal conditioning capability. It is a distributed bus oriented system which greatly reduces the amount of wiring and structural penetrations required in previous systems used for this purpose. The system interfaces with virtually all of the transducer types existing on operational aircraft as well as those typically used for flight testing and proofing such as the strain gauges. It outputs data in digital form to a central unit which combines this data with other aircraft operational parameters for recording on tape or telemetry to the ground. The system consists of a remote multiplexer (RMUX) which provides the formatting and central processing functions and has provision for 16 plug-in signal conditioning modules. It also has provision for up to 20 external multiplexers (EMUXes) which are designed to service a cluster of like sensors in a local area. EMUX types include bridge, thermocouple, and a highly integrated pressure scanner unit. Signal conditioning and processing functions include input transient protection, variable blocks of gain, analog pre-sample filtering, and precision bandlimiting using digital techniques . The penalty for moving the acquisition units to remote locations on the aircraft as compared to previously used cabin mounted equipment is a much more severe environment. Temperature extremes and vibration are particularly severe around the engines. Because of the planned use on operational aircraft, provisions to prevent lightning propagation to the cabin are a significant future.
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Anderson, William, and Eduardo Carro. "Data Acquisition System Central Multiplexer." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611651.
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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThe Central Multiplexer is a versatile data multiplexer designed to address emerging test requirements for recording data from many sources on digital rotary head recorders at high data rates. A modular design allows easy reconfiguration for airborne or laboratory use; simultaneous data input from 63 sources of data in any combination of PCM commutators, ARINC 429 buses, ARINC 629 buses, MIL- STD-1553 buses, and general-purpose high-speed serial data packets; simultaneous, independent programmable outputs to high-speed digital data recorders, quick-look displays, and engineering monitor and analysis systems; and setup and control from a remote panel, a dumb terminal, a laptop personal computer, a standalone test system, or a large control computer.
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Malchodi, L. A. "ADVANCED DIGITAL DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613052.
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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaAn ARINC 429 data acquisition system has been developed by Flight Test Engineering for the Boeing Commercial Airplane Group. Traditionally, acquired ARINC 429 data is stored in the acquisition system and periodically sampled for recording. This paper describes a system which acquires data from many different ARINC 429 digital data buses and records that data as soon as it is has been transmitted on the bus.
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PENHARLOW, DAVID. "MICROMINIATURE DISTRIBUTED DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613485.
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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe new generation of advanced tactical aircraft and missiles places unique demands on the electronic and mechanical designs for flight test instrumentation, high bit rates, operating temperature range and system interconnect wiring requirements. This paper describes a microminiature PCM distributed data acquisition system with integral signal conditioning (MMSC) which has been used in advanced aircraft and missile flight testing. The MMSC system is constructed from microminiature, stackable modules which allow the user to reconfigure the system as the requirements change. A second system is also described which uses the same circuitry in hermetic hybrid packages on plug-in circuit boards.
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Gustin, Thomas W. "Data Acquisition & Recording System." International Foundation for Telemetering, 1987. http://hdl.handle.net/10150/615267.
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International Telemetering Conference Proceedings / October 26-29, 1987 / Town and Country Hotel, San Diego, CaliforniaThe Data Acquisition & Recording System (DARS) is a totally self-contained, high technology data conversion and acquisition system, especially designed for unconstrained and hostile test environments. This system's initial use is for the Advanced Dynamic Anthropomorphic Manikin (ADAM), a test article for acquiring physical event and performance information from both the fully instrumented manikin which contains this system, and from the advanced technology CREST ejection seat upon which it rides. The ADAM development program was sponsored by the Air Force's Aeronautical Systems Division, Life Support Systems Program Office, and the Armstrong Aerospace Medical Research Laboratory. This paper presents the system level design of the DARS with emphasis on techniques used to solve special applications problems including survival in high 'G' tests, high speed computer controlled acquisition activities emulating PCM functions, simultaneous Telemetry and onboard data storage techniques, special sensing techniques, and a custom generic signal conditioning front end system. The presentation will conclude with several types of test environments and scenarios chosen to demonstrate the capabilities of the DARS, including the ADAM application.
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Vemishetty, Kalyanramu. "Embedded Wireless Data Acquisition System." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36329.
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The Wake Forest University Physiology/Pharmacology (WFU Phys./Pharm.) electrophysiology
research labs currently carry out memory research by recording neural signals from laboratory
animals tethered to nearby signal conditioning and recording equipment. A wireless neural signal
recording system is desirable because it removes the cumbersome wires from the animal, allowing it
to roam more freely. The result is an animal that is more able to behave as it would in its natural
habitat, thus opening the possibility of testing procedures that are not possible with wired recording
systems.
Sampling rates obtained by conventional RF wireless systems tend to be very low (800Hz) since the
bandwidth of these RF wireless systems is low. This is because interfacing methods (RS-232) needed
to develop RF systems are slow (57.6Kbps). Another shortcoming of RF systems is the high power
consumption.
This thesis presents development of embedded wireless system to replace wired systems. RF wireless
system is developed to replace wired electrophysiology system. An infrared wireless system
development is discussed to achieve higher sampling rates unachievable by RF wireless system.
Infrared operate at data rates 4Mbps and high sampling rates can be achieved. For this thesis, Infrared
system is interfaced to microcontroller using ISA interface. ISA bus is chosen as it operates (at rate of
8Mbytes/sec) faster than RS-232 and easy to program compared to other buses such as PCI. Also,
Infrared systems consume low power than RF systems. Power consumption is an important
consideration as application in hand is battery powered.Master of Science
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Cruz, Pedro Miguel Batista. "Haptic interface data acquisition system." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10129.
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Mestrado em Engenharia MecânicaNeste trabalho e apresentada uma interface háptica com realimentação de força para a teleoperação de um robô humanoide é que aborda um novo conceito destinado à aprendizagem por demonstração em robôs, denominado de ensino telecinestésico. A interface desenvolvida pretende promover o ensino cinestésico num ambiente de tele-robótica enriquecido pela virtualização háptica do ambiente e restrições do robô. Os dados recolhidos através desta poderão então ser usados em aprendizagem por demonstração, uma abordagem poderosa que permite aprender padrões de movimento sem a necessidade de modelos dinâmicos complexos, mas que geralmente é apresentada com demonstrações que não são fornecidas teleoperando os robôs. Várias experiências são referidas onde o ensino cinestésico em aprendizagem robótica foi utilizado com um sucesso considerável, bem como novas metodologias e aplicações com aparelhos hápticos. Este trabalho foi realizado com base na plataforma proprietária de 27 graus-de-liberdade do Projeto Humanoide da Universidade de Aveiro (PHUA), definindo novas methodologias de comando em tele-operação, uma nova abordagem de software e ainda algumas alterações ao hardware. Um simulador de corpo inteiro do robô em MATLAB SimMechanics é apresentado que é capaz de determinar os requisitos dinâmicos de binário de cada junta para uma dada postura ou movimento, exemplificando com um movimento efectuado para subir um degrau. Ir a mostrar algumas das potencialidades mas também algumas das limitações restritivas do software. Para testar esta nova abordagem tele-cinestésica são dados exemplos onde o utilizador pode desenvolver demonstrações interagindo fisicamente com o robô humanoide através de um joystick háptico PHANToM. Esta metodologia ir a mostrar que permite uma interação natural para o ensino e perceção tele-robóticos, onde o utilizador fornece instruções e correções funcionais estando ciente da dinâmica do sistema e das suas capacidades e limitações físicas. Ser a mostrado que a abordagem consegue atingir um bom desempenho mesmo com operadores inexperientes ou não familiarizados com o sistema. Durante a interação háptica, a informação sensorial e as ordens que guiam a uma tarefa específica podem ser gravados e posteriormente utilizados para efeitos de aprendizagem.
In this work an haptic interface using force feedback for the teleoperation of a humanoid robot is presented, that approaches a new concept for robot learning by demonstration known as tele-kinesthethic teaching. This interface aims at promoting kinesthethic teaching in telerobotic environments enriched by the haptic virtualization of the robot's environment and restrictions. The data collected through this interface can later be in robot learning by demonstration, a powerful approach for learning motion patterns without complex dynamical models, but which is usually presented using demonstrations that are not provided by teleoperating the robots. Several experiments are referred where kinesthetic teaching for robot learning was used with considerable success, as well as other new methodologies and applications with haptic devices. This work was conducted on the proprietary 27 DOF University of Aveiro Humanoid Project (PHUA) robot, de ning new wiring and software solutions, as well as a new teleoperation command methodology. A MATLAB Sim- Mechanics full body robot simulator is presented that is able to determine dynamic joint torque requirements for a given robot movement or posture, exempli ed with a step climbing application. It will show some of the potentialities but also some restricting limitations of the software. To test this new tele-kinesthetic approach, examples are shown where the user can provide demonstrations by physically interacting with the humanoid robot through a PHANToM haptic joystick. This methodology will show that it enables a natural interface for telerobotic teaching and sensing, in which the user provides functional guidance and corrections while being aware of the dynamics of the system and its physical capabilities and / or constraints. It will also be shown that the approach can have a good performance even with inexperienced or unfamiliarized operators. During haptic interaction, the sensory information and the commands guiding the execution of a speci c task can be recorded and that data log from the human-robot interaction can be later used for learning purposes.
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McCauley, Bob. "Expert Systems in Data Acquisition." International Foundation for Telemetering, 1987. http://hdl.handle.net/10150/615229.
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International Telemetering Conference Proceedings / October 26-29, 1987 / Town and Country Hotel, San Diego, CaliforniaIn an Independent Research and Development (IR&D) effort, the Telemetry Systems Operation (TSO) of Computer Sciences Corporation (CSC) sought to determine the feasibility of using Artificial Intelligence (AI) techniques in a real-time processing environment. Specifically, the use of an expert system to assist in telemetry data acquisition processing was studied. A prototype expert system was implemented with the purpose of monitoring F15 Vertical Short Take Off and Landing (VSTOL) aircraft engine tests in order to predict engine stalls. This prototype expert system was implemented on a Symbolics 3670 symbolic processor using Inference Corporation's Artificial Reasoning Tool (ART) expert system compiler/generator. The Symbolics computer was connected to a Gould/SEL 32/6750 real-time processor using a Flavors, Inc. Bus Link for real-time data transfer.
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Lee, Michael. "Optical diffusion tomography data acquisition system." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36540.
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Berdugo, Albert. "ADVANCED DISTRIBUTED WIDEBAND DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604918.
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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, NevadaWideband data acquisition units have been used as part of an instrumentation system for several decades. Historically, these units operated asynchronously from each other, and from the rest of the instrumentation system when installed on the same test vehicle. When many wideband units are required to slave their formats or sampling rate to the test vehicle’s event of interest such as external computer event clock, radar, or laser pulse train; few solutions were available. Additionally, a single test vehicle may use ten to thirty wideband units operating at up to 20 Mbps each. Such systems present a challenge to the instrumentation engineers to synchronize, transmit safety of flight information, and record. This paper will examine a distributed wideband data acquisition system in which each acquisition unit operates under its own data rate and format, yet remains fully synchronized to an external fixed or variable simultaneous sampling rate to provide total system coherency. The system aggregate rate can be as low as a few Mbps to as high as 1 Gbps. Data acquired from the acquisition units is further multiplexed per IRIG-106 chapter 10 using distributed data multiplexers for recording.
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Wargo, William D., and Howard Eckstein. "An Advanced, Programmable Data Acquisition System." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611965.
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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaThe MicroDAS-1000 is an airborne Data Acquisition System (DAS) designed to meet the growing needs of airframe manufacturers for extensive test data accumulation, processing and evaluation. As such, the system has been designed with emphasis on modularity, miniaturization and ease of operator usage and expansion. The MicroDAS product line includes a series of components used as building blocks to configure systems of virtually any size. The modular design of these components allows considerable latitude to the instrumentation engineer in configuring systems for simple or complex applications. The modular concept has been extended to the design of plug-in modules for different functional requirements and system applications. All units are under software control to allow rapid reconfiguration and setup as requirements for instrumentation and data gathering change.
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Shipley, Lawrence E., and Mari L. Roth. "Data Acquisition and Distribution System (DADS)." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611588.
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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaThe Data Acquisition and Distribution System (DADS) transparently collects data from a ship's combat system and transfers that data by satellite to a shore site. The system was developed by the Naval Surface Warfare Center Port Hueneme Division (NSWC PHD). DADS supports surface ship data collection, display, distribution, and debrief capabilities. NSWC PHD personnel used equipment assets developed in-house and purchased data communications hardware and software to develop DADS. A satellite terminal was placed outside Building 1380, and analog telephone lines were installed, linking the Data Communications and Control Laboratory (DCCL) with the Satellite Earth Station in Santa Paula, CA. A shipboard DADS transparently taps a ship's Combat System and collects selected data files. The data is compressed and archived. After shore site personnel select the data required for analysis, DADS encrypts it, and transmits the data via satellite to the shore site for reconstruction and analysis. DADS is unattended. The portable shipboard system equipment and software is controlled from a shore site via the International Maritime Satellite (INMARSAT). The DCC supports transmission speeds of up to 9.6 kilobits/second when connected to a communication system with this capability.
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Piazza, Anthony, and Mansour Radmand. "A Rotor Mounted Data Acquisition System." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611942.
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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaResearch and development testing of rotating machinery has always been limited in the number of measurements because slip ring assemblies have a limited number of conductors available for signals to pass from rotating to non rotating sections. Such testing has been impeded because relatively long wires are needed to pass low level analog signals. Because of the line resistance and capacitance and their susceptibility to stray fields, much effort is dedicated to the investigation of line loss and protection from EMI. The solution in recent years is to use current drivers or to digitize these signals as close to the transducers as possible or to employ painstaking procedures for correction of data in software. At NASA's Ames Research Center, recent research requirements have approached the limit of practical slip ring assemblies. Line lengths needed for wind tunnel tests can be 300 feet. The solution provides for an increase of channels by an order of magnitude, improved data quality, elimination of all efforts to correct data for line loss, a simple and quick installation, real time monitoring with extensive graphics capability and a manageable method for data storage. The system is called the Rotor Mounted Data Acquisition System (RMDAS) and has been acquired through a U.S. Government contract with Aydin Vector Division in Newtown, Pennsylvania. This is a high density, high speed, signal conditioning and multiplexing system which mounts on the rotating hub of full scale rotorcraft and transmits PCM, NRZ-L bit streams to a fixed end data system. The system is 512 channel capable at 20 KSPS/channel when configured for maximum channel capacity. The channel sampling capability for a single channel or for a group of channels is 177 KSPS. The individual channel sample rate can be changed by reprogramming the number of channels per segment. Various other configurations exist but always with an aggregate rate of 17 Mbps, including overhead words, per serial bit stream. This system utilizes 12-bit digitizers to provide high accuracy over the operating temperature range.
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Netzer, Allan. "AIRBORNE DATA ACQUISITION and RELAY SYSTEM." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613170.
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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe Air Force Flight Test Center (AFFTC), 6545th Test Group, is the Air Force center of expertise for Unmanned Air Vehicle (UAV) test and evaluation (T&E). To facilitate this mission, the 6545th Test Group developed three NC-130 Surrogate Carrier Launch Platform (SCLP) aircraft for UAV test support. The SCLP aircraft support various test functions including avionics testing, captive-carriage, and launch of UAVs and missiles. The system can support concept validation and early Developmental Test and Evaluation (DT&E) without requiring the operational launch platform, freeing these critical assets from test support. The SCLP aircraft use a palletized “roll-on/roll-off” approach to increase test support flexibility and decrease test costs. Capabilities include airborne command and control, flight termination, telemetry tracking, recording, relay of in-flight test vehicle data, and engineering test stations for airborne data analysis and test control. The SCLP can captive-carry, launch, and operate a test article out of line of sight of range ground stations. SCLP can display engineering data and relay the data to a Mission Control Center (MCC). Additionally, the SCLP permits autonomous operation on undeveloped airspace or supplements capabilities at existing facilities. Early SCLP configurations were used during concept validation of the air-launched Tacit Rainbow missile, while later variations supported several efforts, including classified programs. This paper describes the telemetry-tracking and relay capabilities of the SCLP using the Airborne Data Acquisition and Relay System (ADARS) station. The ADARS uses a combination of tracking and omni-directional antennas to acquire, track, record, and retransmit telemetry data. The combination of two directional tracking antennas and diversity combining of the received signals enables the system to reliably acquire test vehicle data at relatively low signal levels or with high fade rates. The system proved very versatile and was modified to support various special project requirements. The system is currently configured to receive and retransmit telemetry data up to a rate of 1.92 Megabits per second (Mbps).
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Hauser, G. C., and D. E. Ryerson. "Small Multipurpose Stored Data Acquisition System." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613418.
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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, NevadaSandia National Laboratories Telemetry Department has designed and is fielding a small, inexpensive multipurpose stored data acquisition system in tests ranging from 6000 meters below the ocean surface in seafloor penetrators to 40,000 meters above sea level in gamma ray telescope balloons. The system consists of a simple microprocessor-controlled unit which digitizes analog data and stores the data in memory for readout after the test by a portable personal computer. The system has been used in over ninety tests consisting of parachute drops, water entry tests, vehicle environmental monitoring, and seafloor penetration tests. Data typically recorded with the system are acceleration, strain, temperature, pressure, and angular velocity. The system is also capable of generating control functions such as parachute release.
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Landry, Michael. "MIL-STD-1553 Data Acquisition System." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614499.
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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaThe Range Commanders Council recently added a chapter to IRIG 106-86 which describes a standard for acquisition of MIL-STD-1553 traffic flow. A system has been developed which monitors bus traffic using the format described in the standard for encoding. In addition to bus data, PCM analog channels can be inserted into the telemetry steam. Due to the high bandwidth of the telemetry stream, real-time ground processing of the 1553 data is difficult. Therefore, a limited number of selective measurements taken from the bus traffic are available at fixed positions in the telemetry format for real-time monitoring of critical parameters. A discussion of hardware, software, encoding, and testing will be presented.
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Eccles, Lee, Michael O’Brien, and William Anderson. "DATA ACQUISITION SYSTEM FOR AIRCRAFT QUALIFICATION." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615566.
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International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, NevadaThe Boeing Commercial Airplane Company presently uses an Airborne Data Analysis and Monitor System (ADAMS) to support extensive qualification testing on new and modified commercial aircraft. The ADAMS system consists of subsystems controlled by independent processors which preprocess serial PCM data, perform application-specific processing, provide graphic display of data, and manage mass storage resources. Setup and control information is passed between processors using the Ethernet protocol on a fiber optic network. Tagged data is passed between processors using a data bus with networking characteristics. During qualification tests, data are dynamically selected, analyses performed, and results recorded. Decisions to proceed or repeat tests are made in real time on the aircraft. Instrumentation in present aircraft includes up to 3700 sensors, with projections for 5750 sensors in the next generation. Concurrently, data throughput rates are increasing, and data preprocessing requirements are becoming more complex. Fairchild Weston Systems, Inc., under contract to Boeing, has developed an Acquisition Interface Assembly (AIA) which accepts multiple streams of PCM data, controls recording and playback on analog tape, performs high speed data preprocessing, and distributes the data to the other ADAMS subsystems. The AIA processes one to three streams in any of the standard IRIG PCM formats using programmable bit, frame and subframe synchronizers. Data from ARINC buses with embedded measurement labels, bus ID’s, and time tags may also be processed by the AIA. Preprocessing is accomplished by two high-performance Distributed Processing Units (DPU) operating in either pipeline or parallel environments. The DPU’s perform concatenation functions, number system conversions, engineering unit conversions, and data tagging for distribution to the ADAMS system. Time information, from either a time code generator or tape playback, may be merged with data with a 0.1 msec resolution. Control and status functions are coordinated by an embedded processor, and are accessible to other ADAMS processors via both the Ethernet interface and a local operator’s terminal. Because the AIA assembly is used in aircraft, the entire functional capability has been packaged in a 14-inch high, rack-mountable chassis with EMI shielding. The unit has been designed for high temperature, high altitude, vibrating environments. The AIA will be a key element in aircraft qualification testing at Boeing well into the next generation of airframes, and specification, design, development, and implementation of the AIA has been carried out with the significance of that fact in mind.
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Martens, Andrew. "A high speed data acquisition system." Thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/6686.
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Digital systems pervade the world around us. The interface between analogue data sources and these digital systems is the realm of analogue to digital converters (ADCs) that acquire digital snap-shots of data for further processing. Some applications require high sampling rates or high resolution data (or both). In addition to this, certain applications require the capture of large amounts of data. A good example of an application requiring a high sampling rate and high resolution data, is a digital spectrum analyser used to analyse large bands of a spectrum and offer precise results. Radar systems such as synthetic aperture radars use post-processing techniques on large quantities of data. A developing field requiring versatile data capture systems is that of software defined radio (SDR). It is a collection of hardware and software technologies that enable reconfigurable system architectures for wireless networks and user terminals. This document gives details on a project to build a high speed, high resolution data acquisition system that is capable of performing to some of the most stringent requirements. Specifically, this thesis documents the design, implementation and testing of firmware implemented in an FPGA in a commercial data capture card as part of the system. This firmware would facilitate the real-time transfer of captured data to RAM in a host PC.
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Sonalkar, Prachi Santosh. "Development of an Implantable Data Acquisition System." See Full Text at OhioLINK ETD Center (Requires Adobe Acrobat Reader for viewing), 2005. http://www.ohiolink.edu/etd/view.cgi?toledo1122671274.
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Thesis (M.S.B.)--University of Toledo, 2005.Typescript. "A thesis [submitted] as partial fulfillment of the requirements of the Master of Science degree in Bioengineering." Bibliography: leaves 73-75.
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Battu, Sivaram Kumar. "Data Acquisition System for Muon Lifetime Experiment." UKnowledge, 2006. http://uknowledge.uky.edu/gradschool_theses/230.
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I designed, developed and deployed a data acquisition (DAQ) system to meet the needsof the "??Lan" nuclear physics experiment. The main goal of the experiment is to measurethe positive muon lifetime to a precision of 1 part per million. This represents more thanan order of magnitude increase in precision beyond the current world average. The DAQdesign is motivated by very high data rate this experiment will produce. This experimentis being performed with the proton accelerator at Paul Scherrer Institut in Villigen,Switzerland. I have setup a mock experimental setup at the University of Kentucky. Thedesign and development of the DAQ software was conducted using this mock setup andwas deployed at Paul Scherrer Institut in the fall 2005.
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Prayitno, Adhy. "Data acquisition system for undergraduate physics laboratory." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/935929.
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This thesis describes an automated data acquisition system based on a personal computer that has been modified for use as a scientific instrument in an undergraduate physics laboratory. Two demonstration experiment have been designed to explain how the system functions and how it may be utilized in a laboratory setting.An experiment in optical spectroscopy will allow students to automatically scan the spectra of a light source and collect data concerning wavelength and line intensity. The computer system displays the information in graphical format and saves the data on floppy disks for further analysis.The second experiment studies the heat flow along a cylindrical copper rod. Eight thermocouples, located along the length of the rod, monitor temperature as a function of time. A known heat source is attached to one end of the rod and the other end is maintained at room temperature. Both the transient and stead-state behavior of the temperature distribution is studied. The acquired data is presented graphically and saved on floppy disk for further analysis. These two experiments will be used in the Modern Physics Laboratory course, PHYCS 262.Department of Physics and Astronomy
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Ward, Michael Patrick. "A transputer based scalable data acquisition system." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318280.
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Dai, Jiwang, Thomas DeSelms, and Edward Grozalis. "AN ETHERNET BASED AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605593.
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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaThere is growing interest in the airborne instrumentation community to adopt commercial standards to obtain scalable data rates, standards based interoperability, and utilization of Commercial Off The Shelf (COTS) products to reduce system costs. However, there has been few such data acquisition systems developed to date. L-3 Telemetry East has developed a prototype called the Network Data Acquisition System (NetDAS), which is based on the 10/100 Base-T Ethernet standard, TCP/UDP/IP network protocols and an industrial Ethernet switch. NetDAS has added network capability to the legacy MPC-800 telemetry system by replacing the existing formatter module with a formatter/controller based on a COTS CPU module and a custom designed bridge module. NetDAS has demonstrated transmission bit rates as high as 20 Mbps from a single unit using UDP/IP and an Ethernet switch. The NetDAS system has also demonstrated scalable and distributed architecture.
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Corry, Diarmuid. "DEFINING AN OPEN FLIGHT DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/605609.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaAs today’s flight test data acquisition systems grow more complex, there is an urgent need for open standards that allow Commercial Off-The-Shelf (COTS) equipment from different vendors to be used together. However, there is more to inter-operability than getting the wiring right – it flows through from requirements specification to the gathering of data. This paper discusses the characteristics of an open system at each interface between customer requirements and programming of the Data Acquisition Unit (DAU): • Industry standard specifications for data interchange with databases and software packages • Human readable file formats for Data Acquisition Unit (DAU) setup • Communications link from ground station equipment to DAU • Industry standard protocols for interconnection of DAUs • Intra-DAU backplane specification to allow custom acquisition functionality to be added Only by providing third-party entry points at all five layers can the goal of an open data acquisition system be achieved.
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Baca, Dawnielle C. "DATA ACQUISITION, ANALYSIS, AND SIMULATION SYSTEM (DAAS)." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608561.
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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThe Data Acquisition, Analysis, and Simulation System (DAAS) is a computer system designed to allow data sources on spacecraft in the Flight System Testbed (FST) to be monitored, analyzed, and simulated. This system will be used primarily by personnel in the Flight System Testbed, flight project designers, and test engineers to investigate new technology that may prove useful across many flight projects. Furthermore, it will be used to test various spacecraft design possibilities during prototyping. The basic capabilities of the DAAS involve unobtrusively monitoring various information sources on a developing spacecraft. This system also provides the capability to generate simulated data in appropriate formats at a given data rate, and to inject this data onto the communication line or bus, using the necessary communication protocol. The DAAS involves Serial RS232/RS422, Ethernet, and MIL-STD-1553 communication protocols, as well as LabVIEW software, VME hardware, and SunOS/UNIX operating systems.
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Dennard, Robert C. "FLEXIBLE AIRBORNE/SPACE DATA ACQUISITION SYSTEM (FAStDAS)." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608846.
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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaIn today's aerospace environment, the watchwords and demands for system developers have become "faster, cheaper, better". The use of an industry standard bus and Commercial Off The Shelf (COTS) hardware can substantially lower design time, cost, and enhance performance. This paper describes the Flexible Airborne/Space Data Acquisition System (FAStDAS) design for the MSTI series satellites. While the FAStDAS architecture was designed for the specifics of the MSTI satellites, the approach provides the flexibility for use on a wide variety of airborne and space applications.
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Sodini, Gregory L. "uDACS Micropackaged Data Acquisition and Control System." International Foundation for Telemetering, 1988. http://hdl.handle.net/10150/615029.
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International Telemetering Conference Proceedings / October 17-20, 1988 / Riviera Hotel, Las Vegas, NevadaThe miniaturization of Aerospace Systems, has created a demand for effective, compact, lightweight, and power efficient General Purpose Stand-Alone Flight Computers, as well as Command, Data Handling and Control Systems, that maintain High Reliability, Full Redundancy, Radiation Hardness, Explosive Processing Speed, Rapid Throughput, and High Accuracy. The innovative design techniques used in the uDACS (Micropackaged Data Acquisition and Control System) offer a unique and comprehensive solution to this quandary.
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DAHAN, MICHAEL. "ON-BOARD DATA ACQUISITION AND PROCESSING SYSTEM." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615569.
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International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, NevadaThis paper describes an on-board PCM data acquisition and processing system using standard PCM units and commercial micro-computer equipments. A special interface, which was developed in order to allow a direct connection to PCM encoders, is also presented. It performs data buffering and decommutation prior to the data acquisition process. This approach facilitated the independent conduction of flight tests away from the users’ ground stations using a minimal investment. It helped to provide test results in flight or immediately after flights, thus shortening the flight test processing turn around time and contributing to expedite the overall flight test program.
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Lindh, Marcus, and Markus Fjällid. "Data acquisition system in the MUSCAT experiment." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199319.
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Coutinho, Daniel Filipe Raimundo. "Cloud-based system for IoT data acquisition." Master's thesis, Universidade de Évora, 2021. http://hdl.handle.net/10174/28975.
Full textAbstract:
IoT permite-nos trazer o mundo físico para o mundo virtual, dando o poder de o controlar e monitorizar.
Isto tem encorajado um aumento no interesse em IoT, devido às múltiplas aplicações nos mais
variados contextos.
Ainda assim sistemas de IoT enfrentam desafios tais como o suporte de altos volume de conexões
ou a baixa capacidade de computação face a algoritmos para segurança dos dados.
O objectivo desta dissertação é criar um sistema de recolha de dados de sensor de qualidade do ar
que resolva esses desafios usando tecnologias de estado de arte, dando preferência a ferramentas
de código aberto.
O sistema foi implementado em volta Apache Kafka, com Spring Boot e VerneMQ responsáveis
por receber dados e PostgreSQL, com plugin Timescale, encarregue de os guardar. Um protótipo
do sistema foi implementado usando contentores Docker, mas não foi possível organiza-los com
Kubernetes; Abstract:
Cloud-based system for IoT data acquisition
The purpose of IoT is to bring the physical world into a digital one and allowing it to be controlled
and monitored from a virtual standpoint.
The interest in IoT has increased due to its many applications in various fields, but IoT systems still
deal with challenges such as the support of a high volume of connections or the low processing
capacity of devices faced with data security algorithms.
The objective of this dissertation is to create a data collection for air quality sensors system, that
solves those challenges based on state of the art technologies, giving preference to open-source
tools.
Implementation was done around Apache Kafka, with Spring Boot and VerneMQ receiving data,
HMAC granting a level security on data transport and PostgreSQL with the plugin Timescale storing
the data. A prototype of the system was implemented in Docker containers, but we were unable to
orchestrate them through Kubernetes.
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Lapp, Thomas LeRoy. "A portable microprocessor-based data acquisition system." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1413372623.
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Corry, Diarmuid. "Key Components in a Networked Data Acquisition System." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606160.
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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, CaliforniaWith the growing interest in networked data acquisition there has been a lot of focus on networked data acquisition systems. However, the requirements of a flight test instrumentation system go beyond networked DAU's. For example, a FTI network fabric has particular requirements for switches, time grandmasters, recorders, data servers and network terminals to the ground. This paper discusses these components and how they inter-operate in a single, fully networked system and discusses some FTI oriented requirements for same. Where relevant, we discuss the results of some experiments with network latencies; packet losses etc. and discuss some enhancements that can contribute to improved efficiency for flight test programs.
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Bair, Shyh-Shyong. "A high speed microprocessor-based data acquisition system." Ohio : Ohio University, 1985. http://www.ohiolink.edu/etd/view.cgi?ohiou1183748292.
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Hallam-Baker, Phillip Martin. "A transputer based realtime, highbandwidth data acquisition system." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357383.
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Huff, Michael R. "A LabVIEW- based wind tunnel data acquisition system." Thesis, Monterey, California. Naval Postgraduate School, 1998. http://hdl.handle.net/10945/8605.
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Approved for public release; distribution is unlimitedThe NPS Aerolab Low Speed Wind Tunnel located in Halligan Hall of the Navy Postgraduate School has been in operation since 1953. Although the tunnel is well maintained, its data acquisition system has not kept pace with modem technology. An effective but affordable solution for acquiring data was needed. It was determined that a software package known as LabVIEW would provide a low cost, data acquisition solution that will enhance the capabilities of the wind tunnel, while at the same time making it more user friendly to faculty and students. The focus of this thesis is the design of a VI that will collect and plot force and moment data from a six component strain gauge balance and yield real time, non-dimensional, force and oment coefficients in six degrees of freedom. Wind tunnel tests consisting of angle-of-attack sweeps in the NPS aerolab low-speed wind tunnel were conducted t6 verify (IiD)Isp optimized, M=6, conical-flow waverider data obtained in 1994 using a different data acquisition system. Results of current testing substantiate the LabVIEW code and the validity of the 1994 test data. Analysis of the current wind tunnel test data resolved pitching moment concerns related to the 1994 data.
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Eccles, Lee H., Larry Malchodi, and Kenneth A. Wilhelm. "Network-Based Data Acquisition System for Flight Test." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579642.
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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NVThe Boeing Test and Evaluation flight test organization tests many airplanes each year. Most of these tests involve 50 to 100 parameters and one or two flights. Airplane certifications may require up to 250,000 parameters and last for months. For the last 20 years we have wanted a modular system that would allow us to use the minimum acquisition hardware required to do the job. At the same time we wanted to train the Instrumentation engineers for a single system. We have achieved both goals with a network-based data acquisition system. We solved the lack of determinism with Ethernet by time-tagging all data in the Data Acquisition Units (DAU) using IEEE Std 1588 Precision Time Protocol. The DAUs themselves are small modules which allow us to install just the DAUs that we need for a given program. This has allowed us to implement the full range of systems yet have all of them operate with the same hardware and software. This paper discusses the architecture that we implemented and our successes with this system.
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Jasthi, Umakanth, Bhaskar Gorle, Y. Padma Shayi, and C. Kiran Mai. "On-Board Wireless Data Acquisition System and Telemetry." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579645.
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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NVMost of today's aircraft used for the commercial transport of passengers or military aircraft still rely on simple technology such as cables, connectors and sensors to provide power, avionics data, control system, aircraft instrumentation etc. throughout the vehicle's life-cycle for flight monitoring and fault diagnosis. Despite a marked improvement in the quality and reliability of these components, they continue to be the main cause of failures due to corrosion, misuse, improper installation, etc, using-up endless man-hours to troubleshoot, repair and upgrade them. Wireless monitoring by telemetry of some of the critical systems has been in use for some time as a point to point data link designed to provide vital information, potentially improving the safety and efficiency of any flight. Aircraft manufacturers are now looking at the use of wireless networks to replace current data buses used for the transfer of data between avionics systems and their sensors as well as for the control of some of the surface actuators. Wireless networks used in this way could reduce the amount of cabling and its associated weight as well as simplify the re-routing of connections making upgradation less expensive and quicker, again a benefit to airlines. Despite many benefits there is a potentially serious security issue by means of an introduction of a backdoor into the system, meaning that before aircrafts become network-enabled, all the security issues must be identified in full and dealt with.
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Kolb, John. "SIGNAL PROCESSING ABOUT A DISTRIBUTED DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/605610.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaBecause modern data acquisition systems use digital backplanes, it is logical for more and more data processing to be done in each Data Acquisition Unit (DAU) or even in each module. The processing related to an analog acquisition module typically takes the form of digital signal conditioning for range adjust, linearization and filtering. Some of the advantages of this are discussed in this paper. The next stage is powerful processing boards within DAUs for data reduction and third-party algorithm development. Once data is being written to and from powerful processing modules an obvious next step is networking and decom-less access to data. This paper discusses some of the issues related to these types of processing.
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Ping, Wang Yan, Li Shu Ming, and Shi Chang Jie. "New Development of Chinese Onboard Data Acquisition System." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607550.
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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaThis paper describes a new development of Chinese onboard telemetry data acquisition system--onboard telemetry fundamental system. This system is a new type of miniature, universal onboard measurement system and designs for satisfying future requirement. This is a standard, serial, miniature, modular TDM onboard data acquisition system. It has two buses, three levels’ structure and has a very flexible systematic configuration. According to the requirement you can select the configuration. This system is an open system structure and can add new modules or instrument equipment.
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Talmadge, Richard D., and Mansour Radmand. "A State-of-the-Art Data Acquisition System." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613462.
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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, NevadaRecent developments in manufacturing technology have afforded a new capability in miniaturized instrumentation systems. The advent of ASIC (Application Specific Integrated Circuit) technology has provided the tools to implement very sophisticated signal conditioning circuits in micro-miniature instrumentation. This paper discusses the development of the Automatic Gain Ranging Amplifier (AGRA) and its implementation in the Aydin Vector MMSC-800 instrumentation package. Also discussed is the miniaturization of a 1553 Bus monitor, IRIG-B Time Code reader/accumulator and the development of a helical scan miniature tape recording system capable of recording 2+ hours of 3.4 Mbps data. The paper concludes by giving applications for and benefits of using this new state-of-the-art instrumentation.
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Penna, Sergio Duarte. "ON-BOARD DATA ACQUISITION SYSTEM FOR EMBRAER’S CBA123." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613781.
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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe 90’s will be a challenge to many industries, but in particular to airframe manufacturers like EMBRAER that wish to grow up on a solid basis not only for this decade, but also for the next one. This paper describes the requirements of the on-board data acquisition system and alternatives proposed for the EMBRAER’s new 19-seat, twin engine turbo prop commuter aircraft, the CBA-123.
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Dahan, Michael. "RTDAP:REAL-TIME DATA ACQUISITION, PROCESSING AND DISPLAY SYSTEM." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614848.
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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaThis paper describes a data acquisition, processing and display system which is suitable for various telemetry applications. The system can be connected either to a PCM encoder or to a telemetry decommutator through a built-in interface and can directly address any channel from the PCM stream for processing. Its compact size and simplicity allow it to be used in the flight line as a test console, in mobile stations as the main data processing system, or on-board test civil aircrafts for in-flight monitoring and data processing.
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Seton, Ragnar. "Data acquisition system for optical frequency comb spectroscopy." Thesis, Umeå universitet, Institutionen för fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-139117.
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The Optical Frequency Comb Spectroscopy (OFCS) Group at the Department of Physics at Umeå University develops new techniques for extremely high sensitivity trace gas detection, non invasive temperature measurements, and other applications of OFCS. Their setup used primarily for trace gas detection contains several components that have been developed in-house, including a Fourier Transform Spectrometer (FTS) and an auto-balancing detector. This is the one used in this thesis work and it includes a high frequency data acquisition card (DAC) recording interferograms in excess of 10^7 double-precision floating point samples per sweep of the FTS's retarder. For acquisition and analysis to be possible in both directions of the retarder the interferograms needs to be analysed in a sub-second timeframe, something not possible with the present software. The aim of this thesis work has thus been to develop a system with optimized analysis implementations in MATLAB. The latter was a prerequisite from the group to ensure maintainability, as all members are well acquainted with it.Fulfilling its primary purpose MATLAB performs vector and matrix computations quite efficiently, has mostly fully mutable datatypes, and with recent just-in-time (JIT) compilation optimizations vector resizing performance has improved to what in many instances is perceived as equivalent to preallocated variables. This memory management abstraction, however, also means that explicit control of when arguments are passed by value or by reference to a function is not officially supported. The following performance ramifications naturally increase with the size of the data sets (N) passed as arguments and become quite noticeable even at moderate values of N when dealing with data visualization, a key function in system. To circumvent these problems explicit data references were implemented using some of the undocumented functions of MATLAB's libmx library together with a custom data visualization function.The main parts of the near real time interferogram analysis are resampling and a Fourier transformation, both of which had functionally complete but not optimized implementations. The minimal requirement for the reimplementation of these were simply to improve efficiency while maintaining output precision.On experimentally obtained data the new system's (DAQS) resampling implementation increased sample throughput by a factor of 19 which in the setup used corresponds to 10^8 samples per second. Memory usage was decreased by 72% or in terms of the theoretical minimum from a factor 7.1 to 2.0. Due to structural changes in the sequence of execution DAQS has no corresponding implementation of the reference FFT function as the computations performed in it have been parallelized and/or are only executed on demand, their combined CPU-time can however in a worst-case scenario reach 75% of that of the reference. The data visualization performance increase (compared to MATLAB's own, as the old system used LabVIEW) depends on the size in pixels of the surface it is visualized on and N, decreasing with the former and increasing with the latter. In the baseline case of a default surface size of 434x342 pixels and N corresponding to one full sweep of the FTS's retarder DAQS offers a 100x speed-up to the Windows 7 version of MATLAB R2014b's plot.In addition to acquiring and analyzing interferograms the primary objectives of the work included tools to configure the DAC and controlling the FTS's retarder motor, both implemented in DAQS.Secondary to the above was the implementation of acquisition and analysis for both directions of the retarder, a HITRAN reference spectra generator, and functionality to improve the user experience (UX). The first, though computation time allows for it, has not been implemented due to a delay in the DAC-driver. To provide a generic implementation of the second, the HITRAN database was converted from the text-based format it is distributed in to a MySQL database, a wrapper class providing frequency-span selection and the absorption spectra generation was developed together with a graphical front-end. Finally the improved UX functionality mainly focused on providing easy-access documentation of the properties of the DAC.In summation, though the primary objectives of optimizing the data analysis functions were reached, the end product still requires a new driver for the DAC to provide the full functionality of the reference implementation as the existing one is simply too slow. Many of DAQS' components can however be used as stand-alone classes and functions until a new driver is available. It is also worth mentioning that National Instruments (NI), the DAC vendor, has according to their technical support no plans to develop native MATLAB drivers as MathWorks will not sell them licenses.
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Hansen, Sinclair D. "An intrusion detection system for supervisory control and data acquisition systems." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/16636/1/Sinclair_Hansen_Thesis.pdf.
Full textAbstract:
Despite increased awareness of threats against Critical Infrastructure (CI), securing of Supervisory Control and Data Acquisition (SCADA) systems remains incomplete. The majority of research focuses on preventative measures such as improving communication protocols and implementing security policies. New attempts are being made to use commercial Intrusion Detection System (IDS) software to protect SCADA systems. These have limited effectiveness because the ability to detect specific threats requires the context of the SCADA system. SCADA context is defined as any information that can be used to characterise the current status and function of the SCADA system. In this thesis the standard IDS model will be used with the varying SCADA data sources to provide SCADA context to a signature and anomaly detection engine. A novel addition to enhance the IDS model will be to use the SCADA data sources to simulate the remote SCADA site. The data resulting from the simulation is used by the IDS to make behavioural comparison between the real and simulated SCADA site. To evaluate the enhanced IDS model the specific context of a water and wastewater system is used to develop a prototype. Using this context it was found that the inflow between sites has similar diurnal characteristic to network traffic. This introduced the idea of using inflow data to detect abnormal behaviour for a remote wastewater site. Several experiments are proposed to validate the prototype using data from a real SCADA site. Initial results show good promise for detecting abnormal behaviour and specific threats against water and wastewater SCADA systems.
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Hansen, Sinclair D. "An intrusion detection system for supervisory control and data acquisition systems." Queensland University of Technology, 2008. http://eprints.qut.edu.au/16636/.
Full textAbstract:
Despite increased awareness of threats against Critical Infrastructure (CI), securing of Supervisory Control and Data Acquisition (SCADA) systems remains incomplete. The majority of research focuses on preventative measures such as improving communication protocols and implementing security policies. New attempts are being made to use commercial Intrusion Detection System (IDS) software to protect SCADA systems. These have limited effectiveness because the ability to detect specific threats requires the context of the SCADA system. SCADA context is defined as any information that can be used to characterise the current status and function of the SCADA system. In this thesis the standard IDS model will be used with the varying SCADA data sources to provide SCADA context to a signature and anomaly detection engine. A novel addition to enhance the IDS model will be to use the SCADA data sources to simulate the remote SCADA site. The data resulting from the simulation is used by the IDS to make behavioural comparison between the real and simulated SCADA site. To evaluate the enhanced IDS model the specific context of a water and wastewater system is used to develop a prototype. Using this context it was found that the inflow between sites has similar diurnal characteristic to network traffic. This introduced the idea of using inflow data to detect abnormal behaviour for a remote wastewater site. Several experiments are proposed to validate the prototype using data from a real SCADA site. Initial results show good promise for detecting abnormal behaviour and specific threats against water and wastewater SCADA systems.
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Curry, Diarmuid. "Data Acquisition Blasts Off - Space Flight Testing." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606142.
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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaIn principle, the requirements for a flight test data acquisition system for space testing (launch vehicles, orbiters, satellites and International Space Station (ISS) installations) are very similar to those for more earth-bound applications. In practice, there are important environmental and operational differences that present challenges for both users and vendors of flight test equipment. Environmental issues include the severe vibration and shock experienced on take-off, followed by a very sharp thermal shock, culminating (for orbital vehicles) in a low temperature, low pressure, high radiation operating environment. Operational issues can include the need to dynamically adapt to changing configurations (for example when an instrumented stage is released) and the difficulty in Telemetering data during the initial launch stage from a vehicle that may not be recoverable, and therefore does not offer the option of an on-board recorder. Addressing these challenges requires simple, rugged and flexible solutions. Traditionally these solutions have been bespoke, specifically designed equipment. In an increasingly cost-conscious environment engineers are now looking to commercial off-the-shelf solutions. This paper discusses these solutions and highlights the issues that instrumentation engineers need to consider when designing or selecting flight test equipment.
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Musgrave, Peter J. "An error reporting system for the upgraded CDF data acquisition system /." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68226.
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This thesis describes the data acquisition error monitoring system developed for the 1993-94 physics run of the collider detector at Fermilab (CDF). It presents an overview of the CDF data acquisition system indicating the role that the error monitoring system plays in the experiment. It then describes the custom software and software packages used to meet the error monitoring requirements of the CDF data acquisition system.