【摘要】 本文详细介绍一种采用AD5 90作为温度传感器的低成本、远距离传输温度巡回检测系统。本系统主要从工程实际出发 ,对元件选择、电路设计以及提高系统可靠性与抗干扰能力方面作了探讨和研究 ,针对环境条件差、现场干扰强的情况 ,系统专门设计了看门狗保护电路 ,采用了数字滤波技术等 ,以消除“死机”及被测信号中的噪声干扰 ,确保测量准确可靠 ,因此本设计具有一定的实用价值。更多还原

【Abstract】 This paper detailedly introduces a kind of low cost and Far-distance Transferable Temperature Cycle Detection System which is adopted AD590 for temperature sensor.The desing of the system is originated from actual engineering.We discuss and research the components choosing,circuit designing and improving the trustiness of system and anti-jamming.Aiming at bad environment and spot strong interfer,we design the protection circuit of door-watching dog and adopt digital filtering etc,to eliminate the "system death" and noise interfere in the signal being tested,and to ensure exact and reliable measure.So this design has definite use value.更多还原