基于铂电阻和硬件闭环控制的食品干燥设备恒温控制系统

A thermostatic control system for food drying equipment based on platinum resistance and hardware closed-loop control

针对现有食品干燥设备恒温控制系统的控制精度不高和响应速度慢的问题,提出并设计了一种基于铂电阻为温度感应器件、硬件闭环控制电路进行恒温控制的食品干燥设备恒温控制系统。试验结果表明,系统的恒定温度误差在±0.1℃以内,恒温平均响应时间为4 min 56 s,能有效提高系统的恒温控制精度和响应速度。

Aiming at the problems of low control precision and slow response speed of the existing food drying equipment thermostatic control system,this paper presents and designs a kind of food drying equipment thermostatic control system based on platinum resistance as temperature sensing device and hardware closed-loop control circuit for constant temperature control.The test results show that the constant temperature error of the system is within±0.1℃,and the average response time of constant temperature is 4 min 56 s,which can effectively improve the system constant temperature control accuracy and response speed.