本文提出:微机在线温度测试系统中,应用集成化恒流型线性温敏元件做成的传感器,实现大信号、抗干扰、线性的远距离温度群测;并用统计正交试验方法解决了成批传感器的一致性问题;设计了分区零点补偿传感器电路和相应的自适应软件,从而实现了用普通8位 A/D 转换,得到了优于0.1度的分辨率,还设计了传感器故障自诊断程序和低通数字滤波的数字信号处理程序,实现了检测智能化。 In this paper, the author puts forward the application of integrated constant-current linear temperature-sensitive element sensor in the on-line temperature measurement system of microcomputer to realize large-signal, anti-jamming and linear long-distance temperature group measurement. The statistical orthogonal test method is used to solve batch The consistency of the sensor; Design of the partition zero compensation sensor circuit and the corresponding adaptive software, in order to achieve a common 8-bit A / D conversion, has been better than 0.1 degrees resolution, also designed a sensor fault self-diagnostic program And low-pass digital filtering digital signal processing program to achieve a detection intelligence.