Constant-temperature water tank liquid level control system

The invention provides a liquid level control system for a constant-temperature water tank. The control system comprises an upper computer and a lower computer, the upper computer comprises an upper computer detection PC (Personal Computer); and the upper computer is in communication connection with the lower computer through a serial port. By adopting the resonant liquid level sensor module and the DS18B20 temperature sensor module, the system can accurately measure the liquid level and temperature data in the water tank in real time. And meanwhile, the liquid level and the temperature are controlled by adopting a PI D algorithm, so that the system has high-precision control capability. 本发明提供的一种恒温水箱液位控制系统，所述控制系统包括：上位机和下位机；所述上位机包括上位机检测PC机；所述上位机与所述下位机通过串口通信连接。通过采用谐振式液位传感器模块和DS18B20温度传感器模块，本系统能够实时、准确地测量水箱内的液位和温度数据。同时，采用PI D算法对液位和温度进行控制，使系统具有高精度的控制能力。