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Design of High Precision Passive Meter Based on MSP430F1121 Microcontroller Unit

Design of High Precision Passive Meter Based on MSP430F1121 ...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Wang Peng Lv Zhigang (School of Electronic and Information Engineering,Xi'an Technological University,Xi' an 710032 China)

The design method and the hardware and software design scheme of two-wire meter with low power consumption is *** solved the shortcomings of traditional two-wire meter which has low measurement accuracy and large temperature drift at high *** meter uses the low power consumption single chip computer MSP430F1121, collects the two-wire loop current value,converses used 16bit ADC ADS8320,computes the value using compensation filtering algorithm,and finally displays the value data on the *** measurement accuracy reaches 0.1%.The experiments prove that the meter has low power,high accuracy, and reliable operation,and high anti-interference capability, stable and strong *** could be became the development direction of two-wire meter.

关键词： Ultra-low power high precision MSP430F1121 passive two-wire

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Application Research of the ZigBee Technology in the Navigation Marks Monitoring System

Application Research of the ZigBee Technology in the Navigat...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Zheng Jiachun~(1,2)Zhang Xinggu~2 Fang Gengshun~2 Lu Linhua~2 (1.School of Information Engineering,Jimei University,Xiamen 361021 China 2.Institute of Aids to Navigation,Jimei University,Xiamen 361021 China)

This paper presents a navigation marks monitoring system based on wireless sensor *** system adopts the ZigBee technology,using wireless sensor networks as data transmission link,and self-organization,to achieve the collection of the message such as:beacon working state,power supply,tides,hydrology,weather *** this paper we introduce the composition and working principle of the system,show the implementation scheme of the network nodes and the software of the monitoring *** combining with the CDMA network,the sytem can achieve network communication in two *** results of experiment in lab show that:in the case of limited communication range,ZigBee networks can work stably and reliably,with the characters of low complexity and low *** can be used as the reliable supplement of the existing monitoring system which uses the public mobile communication ***,the system has broad application prospects and promotional value.

关键词： WSNs ZigBee IEEE802.15.4 Navigation Marks

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Voltage Transducer Based on Electrostatic Film Vibration

Voltage Transducer Based on Electrostatic Film Vibration

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Xu Qifeng Chen Chong Duan Xiaohua Chen Shaobin Xu Yuancheng (Electric Engineering & Automation College,Fuzhou University,Fuzhou 350108 China)

A new type of voltage transducer,Film Vibration Voltage Transducer(FVVT) invented by the author,is presented in this *** FVVT is based on electric force to act on electrostatic film which is polarized with a DC power supply or charged by an electrostatic *** film is driven to vibrate by a voltage to be measured and the magnitude of vibration is a liner function of the voltage.A non-contact fiber sensor is employed to sense the vibration in which two group of fibers bundled together to transmit light to hit the film and capture reflection where light intensity is *** the high potential in the FWT is isolated completely by the *** FWT has advantages of non-contact,high accuracy,no transient response delay and capable of both AC and DC measurement.A prototype has been built up for a purpose of principle verification at 10kV voltage level and 0.1%linearity achieved.

关键词： Voltage Transducer Film Vibration Fiber Optic Measurement

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Highly Sensitive Hall Sensor for Brushless DC Motor

Highly Sensitive Hall Sensor for Brushless DC Motor

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Xu Yue~(1,2,3)Pan Hongbin~(1,2)He Shuzhuan~(1,2)Zhao Mao~(1,2)Shi Yi~(1,2) (1.Institute of VLSI Design,Nanjing University,Nanjing 210093 China 2.Key Laboratory of Advanced Photonics and Electronics Materials,Nanjing 210093 China 3.College of electronic science & engineering,Nanjing University of Posts and Telecommunications, Nanjing 210003 China)

This paper describes a highly sensitive integrated Hall sensor with 0.6μm BiCMOS technology for brushless DC *** sensor contains a switched cross-shaped Hall plate and a novel signal conditioner circuit with a dynamic quadrature offset cancellation *** the signal conditioner is very simple,the sensor has achieved a very high *** simulation results show it can detect minimum 2.5 mT magnetic field and realize CMOS digital signal output. Meanwhile,the offset signal of more than 9 mV amplitude can be effectively cancelled out.

关键词： Hall sensor off cancellation chopped amplifier

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Measurement Method for Relationship of Ultrasonic Wave Velocity and Temperature

Measurement Method for Relationship of Ultrasonic Wave Veloc...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Dong Junhua Gao Bingjun (School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130 China)

A simple and feasible experimental method is presented for measuring the relationship of the propagation velocity of ultrasonic wave and *** method involves a circular flat plate and a vertically welded waveguide with the same materials,in which welding with full penetration is used to eliminate the interface *** waveguide is cooled with a water jacket,so that the waveguide end is kept with the temperature lower enough to allow the use of conventional ultrasonic probe and coupling *** the temperature distribution in the waveguide at different plate temperature determined by finite element analysis and proper simplification,the constant in the supposed relationship between sound velocity and temperature is easily determined by Matlab's optimization tool with a objective function based on equal sound traveling *** the same time,thermal expansion,sound velocity,component dimensions,ultrasonic thickness gauge reading,plate temperature and temperature distribution in waveguide are all in *** proposed method is verified to be feasible and has high precision for stainless steel 0Cr18Ni9.

关键词： Sound velocity temperature ultrasonic wave waveguide

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Algorithm for Extended X-ray Image Dynamic Range Based on Image Fusion

Algorithm for Extended X-ray Image Dynamic Range Based on Im...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Li Wei~1 Hou Qing~2 Li Hanzhi~3 (1 School of Information Engineering,Chang' an University,Xi' an 710064 China 2 Modern Education Technology and Network Center,Shaanxi University of Chinese Medicine, Xianyang 712046 China 3 State Key Laboratory of Transient Optics and Photonics,Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science,Xi' an 710119 China)

An algorithm of X-ray image extended dynamic range based on the image fusion is presented in the paper..First of all,the X-ray original image are processed by wavelet decomposition with defined *** generated high frequency wavelet and low frequency wavelet are processed by two different kinds of methods respectively,then the wavelets in every frequency band inverse transformed to image fusion. With a final step of histogram equalization,it comes out an expanded dynamic range,compared with original image.

关键词： Image fusion histogram equalization extended dynamic range wavelet transformation

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Fault Diagnosis Expert System for Hydraulic Pressure Based on Web

Fault Diagnosis Expert System for Hydraulic Pressure Based o...

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第三届国际自动化测试与仪器仪表学术会议

作者： Kang Wei~1 Chang Guangjian~1 Shi Wen~2 (1 Academy of Armored Forces Engineering,Beijing 100072 China 2 Technology Institute of Armored Force,Beijing 100072 China)

Aiming at the shortcomings including the difficulty collection of diagnostic rules,the development and maintenance costs too high for the traditional fault diagnosis expert system,the solution of fault diagnosis expert system based on web and analysis of its working principle are proposed in the *** the functions including the acquisition of expert system knowledge,diagnostic reasoning and user management with ASP(Active Server Page) and database technology are *** with the self-developed Armored Vehicle Hydraulic non-disintegration tester,the hydraulic expert system of type 88 main tanks is developed,remote users can test the reference value of pressure pipe for different measurement points,remote fault diagnosis and maintenance recommendations are given through the *** expert system knowledge base can be added and modified *** practice has proved that the system takes full advantage of the Internet and achieves the remote expert fault diagnosis quickly and effectively.

关键词： Expert system fault diagnosis web

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Testing Instrument for Highway Rut with High Efficiency based on MSP430F149 MCU

Testing Instrument for Highway Rut with High Efficiency base...

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第三届国际自动化测试与仪器仪表学术会议

作者： Lv Zhigang~1 Wang Peng~1 Liu Cuixia~2 Fan Xiaoguang~3 (1 Electronic Information College,Xi'an Technological University,Xi'an 710032,China 2 School of Materials and Chemical Engineering,Xi'an Technological University,Xi'an 710032,China 3 Foreign Language College,Qingdao Technological University,Qingdao 266033,China)

With the development of highway in China,more and more drivers and passengers focus on some important factors of highway,including quality,safety,comfort,and so on. It is rut of highway that greatly affects the above *** testing instrument for highway rut based on MSP430F149 MCU can measure max rut height and unbiased variance of highway with higher efficiency than the traditional *** state of highway's rough surface can be got by MCU from output voltage of laser-angle sensor,from which the highway rut can be calculated by geometry processing with sin function. The instrument has many advantages,such as high precision, small volume,convenient move,low-power consume and multi-function.

关键词： Rut Highway Angle Sensor Unbiased variance

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One Axis Sun-Tracking System with Auto-Test and -Control

One Axis Sun-Tracking System with Auto-Test and -Control

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第三届国际自动化测试与仪器仪表学术会议

作者： Wei Wensheng~1 Su Jianling~2 1) College of Physics & Electronic Information Engineering,Wenzhou University,Wenzhou 325035,China 2) Company of Logistic Group,Wenzhou University,Wenzhou 325035,China

A one-axis east-west oriented sun-tracking system with auto-test and -control while the north-south directed tracing operated by manual adjustment instead of electronic technique was *** azimuth-elevation mechanism was adopted for aiming the plate photovoltaic frame towards the sun.A solar cell sensor due to photo-current being proportional to sunlight irradiance was utilized to auto-test the sun status,the resultant signals were fed to an electromechanical auto-controller which driven a stepping motor to rotate the frame via a speed-reduction gearbox.A photo-switch and a clock-trigger-switch were used to prevent the system idling in overcast or night.

关键词： Electromechanical auto-controller one axis sun-tracking signal test

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Optimization on Algorithm of Labeling Connected Components in Binary Images

Optimization on Algorithm of Labeling Connected Components i...

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第三届国际自动化测试与仪器仪表学术会议

作者： Luo Zhizao~1 Zhuo Yingwu~1 Luo Zhishi~2 (1.department of electronic engineering in Minjiang University,Fuzhou 350108 2.Sanming City Electric Power Bureau 365000)

An algorithm based on analysis of existing algorithms of labeling connected regions through scanning pixels in binary images is *** algorithm has many advantages such as faster,simpler,and easier to realize than the others,and it has more preponderance in terms of multi-objects labeling and keeping the original *** algorithm could label background as objects,and it labels and merges exactly connected subcomponents of objects via the two scans through binary image and matrix of provisional *** adopts sequential memory accesses instead of random memory,and runs more rapidly with more less memory than the other *** algorithm has been improved in according to the following strategy:l)reducing the number of neighboring pixels accessed as possible in first passing through the binary image;2) reducing the number of provisional labels accessed in the second passing through matrix of provisional labels;3)reducing the average time of accessing the neighbour of pixel and provisional labels.

关键词： binary images connected components scanning pixels labeling

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