摘要
集成芯片式(IC)温度传感器MCP9800存在非线性误差,在高精度测温系统中需要进行误差补偿。提出了一种基于多项式拟合的集成芯片式温度传感器误差补偿方法:首先介绍了该传感器的测温原理;然后根据误差曲线低温和高温误差不一致且具有抛物线形状的特征,采用一阶和二阶误差补偿综合的方式,推导了传感器全量程的误差补偿公式。实验表明:这种补偿方式补偿效果好,实现容易,拓展了传感器的测温范围。
Nonlinear error compensation for integrated circuit temperature sensor MCP9800 is necessary in high accurate tem- perature measurement system.An error compensation method based on nonstationary polynomial fitting（NPF） was proposed.Firstly, the principle for measuring temperature was introduced.Secondly, according to the error curves in low temperature and high temper- ature were different and had parabolic shapes, the error compensation formulas were derived by the composition compensation of 1st order error and 2nd order error.Experiment results show that the method has good effects and is easy to realize, thus expanding the temperature measurement range of sensor.
出处
《仪表技术与传感器》
CSCD
北大核心
2015年第2期94-95,103,共3页
Instrument Technique and Sensor
基金
湖南省科技厅科技支撑计划(2013GK3049)
关键词
IC温度传感器
多项式拟合
二阶误差
integrated circuit temperature sensor
nonstationary polynomial fitting
2nd order error
