Research On The High-precision And The Interference Problems Of Data Acquisition System With Multi-channel

With the rapid development and popularization of computer technology, the dataacquisition system has been widely applications. In the production process, the application ofthis system to the process parameters of the production site collection, monitor and record, toprovide information and tools to improve product quality, reduce costs. In scientific research,the application of data acquisition system available to a large number of dynamic.It is apowerful tool for research digital study instantaneous physical processes, and also one of theimportant means of access to scientific mystery. Field signal has an important role in the fieldof radar, meteorology, earthquake prediction, aerospace and communications. Thecharacteristics of these signals has a real-time, high data rate, large amount of data, dealingwith complex, large amount of computation, etc. To achieve the data acquisition system withhigh precision, high speed and high real-time..The subject in the mature technological learning and on the basis of inheritance, forcommonly used editing unit application range limitations and other aspects of the problemsand shortcomings, improve and enhance. The data collection process，explore the dataacquisition system design and implementation of a number of technical issues, to achieveMulti-channel, high-precision and anti-jamming.The accuracy of the basic requirements of the data acquisition system, After the methodidentified by the system, the system design difficulty converted to grasp in detail on how toimprove the measurement accuracy. The following aspects of the realization ofhigh-precision test, which comprises high-precision design of the power supply module, theanti-aliasing filter, A/D converter is set using the high-performance devices for high-precisionmeasurement and digital filtering. Stability and anti-jamming is extremely important in thedata collection process, Environment inevitably be subject to the interference of externalfactors and internal factors, these interference affect the accuracy and resolution of themeasurement results. In order to enhance the anti-jamming capability of the data acquisitionsystem, Minimize the impact of electromagnetic interference, thermal noise, etc., Various hardware and software anti-jamming design.