摘  要：为解决传统的高精度A/D测量电路中需要在A/D前端搭建多级放大器而带来的成本及检测过程中的漂移问题，采用24 位超低噪声模数转换器 ADS1232，并在设计过程中使用了多种单片机抗干扰措施，设计出来的高精度测试仪器在硬件和软件上都得到了简化，该系统可以得到一个可靠的高精度的测量结果，解决了桥接传感器的前端问题。实践表明，该系统工作稳定，性能良好。   关键词：ADS1232转换器；桥式传感器；高精度；测试；抗干扰   中图分类号：TP274；TP319        文献标识码：A          文章编号：1672-4984（2008）03-0138-03   High-precision testing technology based on ADS1232   JIANG Ling-bin1， LIU Si-song1， DANG Zheng-qiang2   （1.College of Nuclear Technology and Automation Engineering，Chengdu University of Technology，Chengdu 610059，China； 2.National Institute of Measurement and Testing Technology，Chengdu 610021，China）   Abstract： In order to overcome the problems including high cost and drift, caused by the multi-stage amplifiers constructed in the front-end of the Analogy-to-Digital（A/D） in the traditional high precision A/D test circuit, a high-precision testing instrument used 24-bit analog-to-digital converter, a low-noise programmable gain amplifier （PGA）, ADS1232 and many anti-interaction techniques of Microchip Controller Unit（MCU） were designed. It simplified both in hardware and software, and it could give reliable and high-precision measurement results. Also, it provided complete front-end for bridge sensor applications. All practical results show this system performance well and stably.   Key words： ADS1232; Bridge sensor; High-precision; Test;   Editor：liyan