基于钹式换能器的振动加速度传感器温度特性研究  

Research on the temperature properties for vibration accelerometer based on cymbal transducer

作　　者：高翔宇[1] 李邓化[1] 粱爽[1] 

机构地区：[1]北京信息工程学院信息与通信工程系,北京100101

出　　处：《功能材料》2007年第A02期757-759,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（60172008）;北京市教委重点资助项目（KZ200610772019）.

摘　　要：使用2-（0）-2连通型的金属．陶瓷压电复合材料作为敏感元件构成压电振动加速度传感器。研究了这种新型压电振动加速度传感器的输出电压的温度特性．将DS18820集成到传感器内部用于内部环境温度的测量。利用单片机对传感器零位输出电压进行记录，得到传感器零位电压温度特性曲线。采用了基于最小二乘原理的分段线性插值法，对其温度特性的非线性进行了有效地补偿。试验结果表明，经过温度补偿后，在20～80℃范围内，零点输出电压温度误差由原来的9．8％降到了0．8％。A new type of piezo-composite vibration acceleration sensor was studied, which sensitive element consists of 2-（0）-2 composite piezoelectric transducer. The temperature properties of this new vibration acceleration sensor were investigated. A digital thermometer, DS18B20, was used to measure the working environmental temperature. The temperature properties of this vibration acceleration sensor were determined by MCU. The least squares approximation method, partition linear interpolation methods were employed to carry on fitting a straight line. The experimental results indicated that the percentage temperature error of the zero vibration output voltage values was reduced from 9.8% to 0.8% at the range of 20～80℃ after temperature compensating.

关 键 词：钹式压电换能器 振动加速度传感器 温度补偿 DS18820 MCU 

分 类 号：TM282[一般工业技术—材料科学与工程] TP212.12[电气工程—电工理论与新技术]