TEMPERATURE CONTROL SYSTEM OF REFRIGERATOR FOR REDUCING COST BY SENSING TEMPERATURE OF REFRIGERATOR COMPARTMENT

摘要

Purpose: a temperature control system of a refrigerator, which is arranged to reduce cost and passes through, feels the temperature with the refrigerator compartment for including temperature sensor in an infrared sensor module, if food is placed on refrigerator compartment. Construction: a temperature control system of a refrigerator includes an infrared sensor module (121) and a microcomputer (140). Infrared sensor module includes an infrared sensor (121a), and feeling that the temperature of a temperature sensor (121b) for the food and compensation temperature of putting a refrigerator compartment into prevents sense of heat change by infrared sensor is the temperature by refrigerator compartment. Microcomputer is connected to infrared sensor module. Microcomputer determines the temperature put the temperature of the food of the refrigerator compartment of refrigerator compartment and temperature into and food and refrigerator compartment is kept to subdue. Temperature control system includes multi-filter part (132,134) sensing signal is filtered, it is according to the sense of heat production by infrared sensor and temperature sensor, the sensing signal of filtration is transmitted to microcomputer, the amplifier section (131) being connected between infrared sensor and filter parts, amplification are exported from the sensing signal of infrared sensor.