ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California / The development and qualification of personnel and cargo aerial delivery parachute systems present unique challenges to the instrumentation and data analysis engineers. Some of the areas that must be addressed include: a) system must be low in cost, b) system often has to be operated on ranges that have limited telemetry or other range instrumentation and support (i.e. commercial skydiving centers), c) system is often rigged and operated by parachute support personnel and test jumpers rather than instrumentation engineers, and d) system must be able to be reconfigured in the field to support a variety of test card requirements during a typical test day, e) data must be available for review and the system be prepared for the next test within a few minutes of parachute recovery, and f) system must withstand ground impact velocities as high as 50 ft/sec (15.24 m/sec) without damage. This paper describes such a system as it is being used for the development and qualification testing of a number of parachute systems for sport skydiving, military personnel, as well as cargo parachute systems. This modular system has been developed as a result of previous experience in other parachute development and qualification projects to address the need for a flexible Data Acquisition System (DAS) system that meets the above requirements. This paper describes some of the tools used to meet these requirements.

International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / Selecting an airborne data acquisition system involves compromises. No single data acquisition system can be at the same time, lowest cost, smallest, easiest to use and most accurate. The only way to come to a reasonable decision is to carefully plan the project, taking into account what measurements will be required, what are the physical environments involved, what personnel and resources will be needed and of course, how much money is available in the budget? Getting the right mix of equipment, resources and people to do the job within the schedule and the budget is going to involve a number of tradeoffs. A good plan and a thorough knowledge of available resources and equipment will allow you make the necessary decisions. Hopefully, this paper will offer some suggestions that will aid in preparing your plan and give some insight into available system alternatives.

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, Nevada / Flight 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.

No presente trabalho procurou-se desenvolver um sistema computacional para a automação de um Espectrofotômetro de Varredura Refrativa. Este sistema é baseado em um computador hospedeiro da linha IBM-PC, que pode ser de qualquer modelo, desde que possua barramento ISA de 16 bits. O sistema se divide em dois módulos - aquisição e processamento. O modulo de aquisição e capaz de atingir taxas de aquisição de ate 200 KHz, com resolução de 12 bits. É independente de controle do hospedeiro pois possui lógica de controle e sistema de armazenamento próprio. O módulo de processamento envolve o uso de um processador vetorial de sinais digitais ZORAN ZR34161 dedicado a efetuar eficientemente a Transformada Rápida de Fourier (FFT). Também opera independentemente do computador hospedeiro. Este módulo é capaz de efetuar a FFT em um vetor real de 4096 pontos em 19,64 ms / This work was intended to develop a computational system to control a fast Fourier spectrophotometer. This system is based in an IBM-PC type host computer, with ISA bus 16 bits wide. The system has two modules - acquisition and processing. The acquisition module works at 200 KHz sample rate, with 12 bits of resolution, and also works without host control, due to its own memory system and control logic. The processing module uses a ZORAN ZR34161 vector signal processor, dedicated to do the Fast Fourier Transform (FFT) in the most efficient way. No management of host is required, and it can compute a FFT of a 4096 points real vector in 19,64 ms

FundaÃÃo de Amparo à Pesquisa do Estado do Cearà / Um dispositivo para calibraÃÃo de sensores de umidade do solo (DCSUS) foi desenvolvido. Para o controle da umidade do solo foram instalados um sistema de sucÃÃo tipo funil de placa porosa e um sistema de pressÃo tipo cÃmara de pressÃo. Foi construÃda uma estrutura de ferro de 3,0 m de altura, no topo da qual, uma balanÃa de braÃos conteve, em uma das extremidades, a coluna de solo horizontal com os sensores de umidade a serem calibrados e, na outra, uma cÃlula de carga com capacidade nominal de 490,33 N, para obtenÃÃo da variaÃÃo do peso da coluna decorrente da perda de umidade. Os dados dos sensores de umidade, da cÃlula de carga e de um sensor de temperatura foram coletados em tempo real, no perÃodo de 15/01 a 27/05/2004, a uma freqÃÃncia de 3 Hz, por um sistema de aquisiÃÃo de dados, cujo conversor analÃgico digital possuÃa canais de 12 bits. Os dados foram armazenados diariamente em um arquivo de texto para posterior processamento. Foi realizada a calibraÃÃo do dispositivo para determinaÃÃo de sua sensibilidade. Realizou-se o monitoramento da umidade do solo atravÃs dos registros da cÃlula de carga; da tensÃo da Ãgua do solo, atravÃs de cinco sensores tipo tensiÃmetros eletrÃnicos e da resistÃncia elÃtrica do solo, atravÃs de trÃs sensores de matriz granular (Watermark). Os dados da temperatura ambiente foram coletados pelo sensor de temperatura FM51. Foram analisadas as saÃdas obtidas na cÃlula de carga e nos sensores de umidade do solo quanto à variaÃÃo da temperatura ao longo do dia. O DCSUS apresentou sensibilidade para variaÃÃo de umidade correspondente à perda de 13,33 mL de Ãgua. A cÃlula de carga utilizada apresentou sensibilidade à temperatura ambiente ao longo do dia, com erro em torno de 0,25%. Nas condiÃÃes experimentais estabelecidas, os sensores Watermark nÃo apresentaram erro devido à temperatura ambiente. Os tensiÃmetros apresentaram erro devido à variaÃÃo da temperatura acima de 3,5% quando em potenciais mÃtricos mais elevados (-3,87 kPa) e acima de 5,5 % quando em potenciais mÃtricos mais baixos (-44,50 e 51,00 kPa). O DCSUS desenvolvido foi eficaz quanto à determinaÃÃo da umidade do solo, com sensibilidade à variaÃÃo de 4,244.10-4 cm3.cm-3. / Na apparatus for soil moisture calibration was developed and built (DCSUS). The moisture was controlled indirectly by controlling the soil water matrix potenctial using both a porous plate funnel and a pressure chamber system. A 3.0 m high tower wal built in steel and a scale installed on its top. The scale components were an I-bean articulated in its center by a set of bearings and bushings and a shaft. The bian was welded in its middle point to the shaft and a horizontal soil column with undisturbed soil contained by an acrylic cylinder installed on one of its ends, and a 50 N capacy load cell on the other end. The following sensors were installed: a granular matrix sensor (Watermark), an electronic tensiometer sensor, air temperature sensors and soil temperature sensors. Moisture sensor readings, as well as from the load cell and temperature sensor were taken in real time at a 3 Hz frequency from 01/15 to 05/27/2004. The data acquisition system was made of a 12-bit analog/digital coverter, an AMD188 microcontroller and an RS232 interface. Data was stored daily and applied to obtain the parameters of calibrations, sensitivity and the effect of temperature on the system. The apparatus resulted in sensitivity to moisture change of 13,33 mL of water. The load cell displayed some sensitivity to daily temperature variation, with an error of 0,25%. The Watermark sensors were not affected by air temperature variation, but displayed sensitivity to variation on the supplied voltage. The electronic tensiometers, however, were more sensitive to temperature with errors of 3.5% for higher matric potentials (-3.82 to -3.92 kPa) and 5.5% for lower matric potentials (-44.5 to -51 kPa). The DCSUS showed to be efficient in monitoring variations soil moisture, displaying a minimum reading 4.244E-4 cm3.cm-3.

According to NHTSA Traffic Safety Facts [9], bicyclist deaths and injuries in 2013 are recorded as 732 and 48,000, respectively. In the State of Florida the safety of bicyclists is of particular concern as the bicycle fatality rates are nearly triple the national average. Further Florida ranks #1 on bicycle fatality rate in the nation for several years. To determine the cause of near-misses and crashes, a detailed study of bicyclist behavior and environmental conditions is needed. In a Florida Department of Transport (FDOT) funded project, USF CUTR has proposed naturalistic bicycle study based on ride data collected from 100 bicyclists for 3000 hrs. To this end, Bicycle Data Acquisition System (BDAS) is being researched and developed. The main objective of this thesis work is to design and implement low power video and audio subsystems of BDAS as specified by domain experts (USF CUTR researchers). This work also involves design of graphical user interface (Windows application) to visualize the data in a synchronized manner. Selection of appropriate hardware to capture and store data is critical as it should meet several criteria like low power consumption, low cost, and small form factor. Several Camera controllers were evaluated in terms of their performance and cost. The major challenges in this design are synchronization between collected data, storage of the video and sensor data, and design of low power embedded subsystems.

Modern particle physics measurements are heavily dependent upon automated data acquisition systems (DAQ) to collect and process experiment-generated information. One research group from the University of Saskatchewan utilizes a DAQ known as the Lucid data acquisition and analysis system. This thesis examines the project undertaken to upgrade the hardware and software components of Lucid. To establish the effectiveness of the system upgrades, several performance metrics were obtained including the system's dead time and input/output bandwidth.<p>Hardware upgrades to Lucid consisted of replacing its aging digitization equipment with modern, faster-converting Versa-Module Eurobus (VME) technology and replacing the instrumentation processing platform with common, PC hardware. The new processor platform is coupled to the instrumentation modules via a fiber-optic bridging-device, the sis1100/3100 from Struck Innovative Systems.<p>The software systems of Lucid were also modified to follow suit with the new hardware. Originally constructed to utilize a proprietary real-time operating system, the data acquisition application was ported to run under the freely available Real-Time Executive for Multiprocessor Systems (RTEMS). The device driver software provided with sis1100/3100 interface also had to be ported for use under the RTEMS-based system. <p>Performance measurements of the upgraded DAQ indicate that the dead time has been reduced from being on the order of milliseconds to being on the order of several tens of microseconds. This increased capability means that Lucid's users may acquire significantly more data in a shorter period of time, thereby decreasing both the statistical uncertainties and data collection duration associated with a given experiment.

Modern particle physics measurements are heavily dependent upon automated data acquisition systems (DAQ) to collect and process experiment-generated information. One research group from the University of Saskatchewan utilizes a DAQ known as the Lucid data acquisition and analysis system. This thesis examines the project undertaken to upgrade the hardware and software components of Lucid. To establish the effectiveness of the system upgrades, several performance metrics were obtained including the system's dead time and input/output bandwidth.<p>Hardware upgrades to Lucid consisted of replacing its aging digitization equipment with modern, faster-converting Versa-Module Eurobus (VME) technology and replacing the instrumentation processing platform with common, PC hardware. The new processor platform is coupled to the instrumentation modules via a fiber-optic bridging-device, the sis1100/3100 from Struck Innovative Systems.<p>The software systems of Lucid were also modified to follow suit with the new hardware. Originally constructed to utilize a proprietary real-time operating system, the data acquisition application was ported to run under the freely available Real-Time Executive for Multiprocessor Systems (RTEMS). The device driver software provided with sis1100/3100 interface also had to be ported for use under the RTEMS-based system. <p>Performance measurements of the upgraded DAQ indicate that the dead time has been reduced from being on the order of milliseconds to being on the order of several tens of microseconds. This increased capability means that Lucid's users may acquire significantly more data in a shorter period of time, thereby decreasing both the statistical uncertainties and data collection duration associated with a given experiment.

All the operational and measurement systems of Ankara Wind Tunnel was modified to operate automatically under the control of a central computer system programmed using the Lab View programming language. A cruciform air-to-air missile with triangular canard control and a trapezoidal wing model was tested by a 35mm diameter internal balance at Mach 0.2 and data was compared with the test data of the same model&rsquo / s test that was performed at NASA Langley Research Center.

Made available in DSpace on 2014-06-11T19:26:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-16Bitstream added on 2014-06-13T20:34:40Z : No. of bitstreams: 1 barbosa_rz_me_botfca.pdf: 773098 bytes, checksum: 5e5761fb2f635f8660fde2f9e9b8bb08 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / O objetivo deste projeto foi desenvolver um sistema para aquisição de dados georreferenciados e um sistema de telemetria para monitoramento de parâmetros físicos, aplicados em sistemas de irrigação e gestão de recursos hídricos. O sistema de aquisição de dados georreferenciados consiste em um software que realiza a aquisição de dados e o registro de informações georreferenciadas, a partir das informações recebidas de um dispositivo de sensoriamento escolhido pelo usuário e de um GPS, através da porta de comunicação serial RS-232 do computador. O software faz a aquisição de dados em tempo real, e então forma um único registro de dados com as informações do GPS e do dispositivo de sensoriamento, possibilitando a localização exata com data e hora onde foi realizada a medição da grandeza física. O sistema de telemetria para monitoramento de parâmetros físicos consiste no desenvolvimento de cinco softwares e um sistema de hardware para telemetria, incluindo um módulo transmissor e um receptor de rádio. Os softwares desenvolvidos são chamados de Software de Comunicação Serial, Software Registrador de Dados, Software para Testes de Rádio Transmissão, Software de Aquisição de Dados Georreferenciados e Software de Geração de Dados Físicos. O Software de Comunicação Serial estabelece a conexão serial e a consequente troca de informações entre duas máquinas ligadas por meio de um cabo metálico, através da porta de comunicação RS-232 dos computadores. O Software para Testes de Rádio Transmissão testa o alcance de transmissão de dados por rádio e é utilizado em sistemas de telemetria, permitindo verificar o alcance de transmissão de módulos de rádio frequência e o número de erros durante o processo de transmissão de dados... / This project goal is the development of a georeferenced data acquisition system and a telemetry system, both for physical parameters monitoring in irrigation and water management areas. The georeferenced data acquisition system is composed by software that perform the data acquisition and record of information received simultaneously through the serial interface RS232 from a sensing device and a GPS device. The software performs data acquisition in real time, and then composes a single data record with both the information, associating directly each physical measurement with its exact location, date and time. The telemetry system for physical parameters monitoring includes five pieces of software and two pieces of hardware for the radio transmitter and the radio receiver modules. The software system is composed by five different pieces of software called Serial Communications Software, Data Logger Software, Software for Radio Module Testing, Georeferenced Data Acquisition Software, Physical Data Generation Software. The Serial Communication Software establishes the wired serial connection and the subsequent exchange of information between two computers through the RS 232 computer interfaces. The Software for Radio Module Testing is a tool for the data radio transmission distance measurement and computation of the number of errors during the data transmission. The Data Logger Software allows the computer connection to any measuring instrument that has a physical serial communication output, then the software records data in a file on the computer disk. The Georeferenced Data Acquisition Software performs the data acquisition of physical parameters in georeferenced location using a measurement device and a GPS. The Physical Data Generation Software generates data according to the standard... (Complete abstract click electronic access below)