作者：邓霏, 胡驰, 管明杨
作者单位：中国工程物理研究院计算机应用研究所, 四川 绵阳 621900
关键词：TDC;无线应变测量;ARM;PS081
摘要：
针对传统的基于ADC的应变测量系统具有高功耗、精度低、抗干扰性差、成本高等缺点的情况,设计一种基于TDC(时间数字转换)芯片PS081的无线应变测量方案,只需要一颗PS081芯片即可实现应变信号到数字信号的转换。文章详细描述了测量电路的基本原理和具体实现方法,并与ADC应变采集方案进行对比,通过对比表明:该方案具有低功耗、高精度、宽测量范围、不需调零、抗干扰性好、体积小等特点。
Hardware design of PS081-based wireless strain measurement system
DENG Fei, HU Chi, GUAN Mingyang
Institute of Computer Applications, China Academy of Engineering Physics, Mianyang 621900, China
Abstract: In order to solve the probelms of tranditional measurement system based on ADC, for examples, advantages of high-power, low-precision, big disturbance, High-cost, A wireless strain measurement system based on a TDC (Time to Digital Converter) chip PS081 was designed in this paper. The scheme only need to realize the conversion of strain signal to digital signal to a PS081 chip. The basic principles of the measuring circuit and specific implementation are described in details. A comparison was made between TDC and ADC strain measurement, and the result shows the system designed in this paper has the advantages of low-power, high-precision, wide measuring range, no zeroing, anti-interference and small size.
Keywords: TDC;wireless strain measurement;ARM;PS081
2015, 41(5): 103-106 收稿日期: 2014-8-19;收到修改稿日期: 2014-10-27
基金项目:
作者简介: 邓霏(1988-),男,四川绵阳市人,工程师,研究方向为软件测试、智能仪器与传感器。
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