基于AD7150微小电容测量方法的研究  

Study on a micro capacitor testing method based on AD7150

作　　者：赵军荣[1] 刘双峰[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《传感器世界》2010年第6期37-40,共4页Sensor World

摘　　要：本文主要研究了一种新型的微小电容的测量方法,阐述了电容测量电路的应用背景和国内外研究现状,针对电容式传感器的工作原理确定了测试电路。AD7150是一种响应快速兼超低功耗的电容-数字转换器,通过串行接口与微控制器连接,为电容式近程传感器的信号处理提供了一种全面的解决方案。A novel method for measuring micro capacitance output from capacitance-type sensor is described in this paper The application background and domestic and foreign present situations of micro capacitance measurement circuits are elaborated. Combining the working principle of capacitance-type sensor , an adaptive circuit is established based on AD7150 .AD7150 is a capacitance-digital converter with fast response time and ultra-low power consumption and communicates with microcontroller through the serial port. The AD7150 delivers a complete signal processing solution for capacltive proximity sensors .

关 键 词：电容式传感器 电容 AD7150 测试 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]