基于差动式电容传感器的车辆载荷检测系统  

Vehicle Load Detection System Based on Differential Capacitance Sensor

作　　者：陈梅[1] 

机构地区：[1]商丘师范学院物理与信息工程系,河南商丘476000

出　　处：《现代电子技术》2011年第9期190-192,196,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(60572001)

摘　　要：针对传统车辆载荷检测系统存在的不足,提出了一种电容式车辆载荷检测系统,该系统的载荷检测传感器采用差动式结构,大大提高了测量的灵敏度和非线性,电容测量线路采用差动脉冲宽度调制集成测量电路,数据的采集和处理采用自带A/D转换器的STC89LE516AD单片机芯片,数据通信采用无线通信模式。这种载荷检测系统结构简单、成本低廉、安装方便、性能可靠、测量电路简单、抗干扰性好,可用于交通数据的采集和便携式测量,具有良好的使用前景。Aiming at the shortage of present vehicle load detection system,a capacitive vehicle load detection system is introduced.In the system,the load detection sensor used differential structure,which greatly improved the measurement sensitivity and non-linear,the capacitance measurement circuit used differential pulse width modulation integrated circuit,data acquisition and processing used STC89LE516AD single chip which has its own A / D converter,data communication used wireless communication mode.This load detection system has simple structure,low cost,easy installation,reliable performance,simple measurement circuit and good anti-jamming.The system can be used for traffic data collection and portable measurement,and has good application prospects.

关 键 词：车辆载荷检测 差动式电容传感器 STC89LE516AD芯片 无线通信 

分 类 号：TN712-34[电子电信—电路与系统]