根据测温装置在现场运行的情况,提出了改进信号处理回路、软件中增加缓冲环节、采用具有滤波功能的A/D芯片等几种增强抗干扰能力的措施,并分别进行了现场试验,比较每种措施的性能,最终通过实践,比较成功地提高了测温装置对于环境干扰的抵抗能力,为其他类似的模拟量采集提供了参考。 According to the operation of the temperature measurement device in the field, some measures to enhance the anti-jamming capability, such as improving the signal processing loop, adding buffer in the software and using the A / D chip with filtering function, were put forward and compared with each other. The performance of each measure, through the practice, finally succeeded in improving the resistance of the temperature measuring device to the environmental disturbance and providing reference for other similar analog acquisitions.