AN ENVIRONMENTAL MONITORING SYSTEM FOR LOW TEMPERATURE STORAGE HOUSE BY WAY OF THE INTERNET

摘要

PURPOSE: An environment monitoring system of a cryogenic refrigerator using internet is provided to improve the storing property of agricultural products and to lengthen the expiration period of products by keeping the agricultural products optimum. CONSTITUTION: A remote monitoring terminal(100) is mounted to monitor the inner environment of a cryogenic refrigerator(40). Plural external MODEMs(Modulator/Demodulator,110,140) are mounted to transmit/receive signals between the remote monitoring terminal and a control unit(90) of the cryogenic refrigerator. A telephone alarming device(130) is mounted to alarm a user of abnormality of the cryogenic refrigerator if the cryogenic refrigerator is broken. A manager monitors the storing conditions of the cryogenic refrigerator through a telephone line and alarms a user of abnormality of the refrigerator by calling up on the phone from the control unit if the refrigerator is broken. Thereby, the manager takes prompt action on emergency to minimize damage of agricultural products in the refrigerator.