擴散硅壓力傳感器及變送器參數測試系統:　采用具有自校驗和信號調理功能的24 位ADC ,開發設計了一種高精度數據采集系統. 該系統能對擴散硅壓阻傳感器和變送器的特性參數進行高精度的檢測;同時,亦可對熱電偶等具有毫伏信號輸出的傳感器進行檢測和標定. 作者闡述了該測試系統的原理和構成,介紹了軟硬件設計.
關鍵詞: 　測試系統; 擴散硅壓阻傳感器; 壓力變送器; 高精度檢測

(1. Dept of Elct Engr ,Xi’an Inst of Tech ,Xi’an 710032 ,China ;2. Xi’an Dongfang Mech Group Company) Abstract : 　A high precision data collection system is designed by using 24 bits ADC which has the function of self - calibration and signal processing. An accurate test for diffuse silicon piezor esistance sensors on pressure transmitters and the transducers like thermocouples , with mV signals outputin can performed with the system. The working principles ,system structure and software design are introduced in this paper.
Key Words : 　test system;diffuse silicon piezoresistance sensor ;pressure transmitter ;high precision test