测频测周方法集成下湿度传感电路的参数优化  

The Parameter Optimization of Humidity Sensing Circuit Based on the Integration of Frequency-and Period-Measuring Method

作　　者：刘桂雄[1] 邝泳聪[1] 冯云庆[1] 叶鸣[2] 

机构地区：[1]华南理工大学机电工程系,广东广州510640 [2]华南理工大学机动车辆技术设备厂,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2001年第7期33-35,共3页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省重点攻关项目 (2KM0 0 70 5N);广州市重点攻关资助项目 (96_Z_2 0 )

摘　　要：在研制智能化湿度仪的测频测周集成方法基础上 ,结合传感阻频电路的数学模型 ,研究了湿敏元件的等效电阻和等效电容随湿度的变化规律 ,进而实现对传感阻频电路的参数优化 ,获得了优良的湿敏传感特性 ,同时通过简单的运算求取有效的最优参数下的标定数据 .Based on the integration of frequency_ and period_measuring method used in intelligent humidity instrument and the model of the resistance_frequency converting circuit, the variation rule of equivalent resistance and capacity of sensor with humidity is studied, and the parameter optimization of the converting circuit that aims to improve the performance of sensing characteristics is presented. According to optimized parameter circuit, the way of collecting instrument calibration data by calculation is also included.

关 键 词：湿度传感器 传感特性 振荡电路 参数优化 传感阻频电路 湿敏元件 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]