摘要
针对医用测温仪器使用简便性、高精度、低成本的设备要求,本文设计了一个以热敏电阻为输入,通过HCNR201线性光隔实现线性隔离,采用STM32内部集成AD采集数据,数据通过RS232传送上位机观察的医用测温电路。
Aiming at the the medical temperature measurement instrument with the requirements of easy to use, high precision and low cost that the paper designs a medicar temperature measure circuit with the thermistor as the input, and the HCNR201 linear opto-couple for linear isolating, the ARM of STM32 for acquiring data through RS232 communicaten which transfer data from ARM to PC for observing. The circuit can realize temperature reference, calibration and measurement.
