CONTROL SYSTEM FOR SEMICONDUCTOR REFRIGERATOR

摘要

A control system for a semiconductor refrigerator, comprising: a hot end temperature sensor (102) configured to detect the hot end temperature of a semiconductor cooling piece of the semiconductor refrigerator and send a hot end temperature signal representing a hot end temperature level; a compartment temperature sensor (103) configured to detect the average temperature of the compartment of the semiconductor refrigerator and send a compartment temperature signal representing the average temperature level; a temperature setting module (104) configured to set a target temperature required by the compartment of the refrigerator and send a target temperature signal representing the target temperature level; a main control module (101) configured to receive the hot end temperature signal, the compartment temperature signal and the target temperature signal, and send a voltage regulating signal of the semiconductor cooling piece according to a preset PID regulating rule; a semiconductor voltage regulating module (105) configured to receive the voltage regulating signal of the semiconductor cooling piece, and regulating a supply voltage supplying power for the semiconductor cooling piece according to the voltage regulating signal of the semiconductor cooling piece.