Cold closet door sensing and alarming system

Abstract

The invention relates to a cold closet door sensing and alarming system which is suitable for various cold closets. The system comprises a photoelectric sensor which is located at the position, closeto a closet door, of the inner wall of a cold closet body; a temperature sensor, a wireless communication module and a PLC are arranged in a cold closet, a sound alarming device is arranged at the topof the cold closet, the wireless communication module is connected to a remote mobile phone, and the photoelectric sensor, the temperature sensor, the wireless communication module and the sound alarming device are correspondingly connected to the PLC. When the system is in use, if the closet door is in an open state, the photoelectric sensor can sense the opening state of the closet door, if thecloset door is in the open state all the time, the photoelectric sensor sends a signal to the PLC, the PLC controls the sound alarming device to send out an alarm sound and notifies the remote mobilephone through the wireless communication module; and if the temperature sensor senses that the temperature in the closet is abnormal in the normal use process of the cold closet, similarly, the PLC controls the sound alarming device to send out the alarm sound, so that the safety in the using process is improved, and the cold storage effect is guaranteed.

Description

technical field [0001] The invention relates to a door induction alarm system of a refrigerated box, which is suitable for various types of refrigerated boxes. Background technique [0002] During the use of the refrigerator, the door may not be closed tightly due to human or other reasons, resulting in the leakage of cold air and other phenomena, which affects the refrigeration effect in the refrigerator. Currently, various types of detection refrigerators The components of the closed state of the box door usually have disadvantages such as complicated structure and high cost, which are not conducive to popularization and use. Contents of the invention [0003] According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is: to provide a device that solves the above-mentioned defects, has a simple structure, can detect the closing of the door of the refrigerator and the temperature inside the refrigerator, and can send ...

AI Technical Summary

Problems solved by technology

[0002] During the use of the refrigerator, the door may not be closed tightly due to human or other reasons, resulting in the leakage of cold air and other phenomena, which affects the refrigeration effect in the refrigerator. Currently, various types of detection refrigerators The components of the box door closed usually have disadvantages such as complex structure and high cost, which are not conducive to popularization and use

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