Research On Great Range Measure System Of Pluse Convert Circuitry

"Wide range measure system of pulse convert circuit" is one of the supplemental test equipment on the product line of the air-to-air missile PL12 , which is the important equipment to develop, product, check and accept the great range pulse transforming circuit board. The task of the test system is to comprehensively test the electrical performance parameters of the pulse convert circuit which is one of the accelerometer components in the system products.In this paper, based on the detailed analysis of the measurement principle and the measurement method of the wide range pulse convert circuit board, the hardware circuit of the measurement system is designed, and the software flow hart of the measurement system is drawn in detail. The emphasis is to present the method to improve the system measurement precision by plenty of experiments. The hardware circuit design include: industrial control computer configuration, selection of industrial control board type, design of the power supply and monitoring interface circuit, design of signal processing interface circuit (the constant current source circuit, the time base signal processing circuit, the processing circuit for the signal to be measured), design of panel control circuit, design of the system self-checking circuit, and etc. The program flow hart include: main program flow chart, system boot-strap self-checking program flow chart, manual static testing program flow chart, semiautomatic static testing program flow chart, automatic static testing program flow chart, dynamic testing program flow chart, transient testing program flow chart, source voltage and current monitor program flow chart, investigate function testing program flow chart, and etc.The measure system offers six working power supplies, the signal of time base, the signal of constant current source, sine wave signal and step to leap signal, and measures the frequency of the output pulse signal of the wide range pulse convert circuit accurately under three kinds of different test state (static form, dynamic form and transient form). The system software is designed with Visual C, adopting modular structure. The test result is saved in the database by data and graph, which could carry out inquiry, retrieval and print for all test records.The system has been being used for six months, and the result shows that the system has steady performance, high measurement precision and friendly operation interface.