| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cold remote monitoring device to automate analysis of a trouble cause during the occurrence of a trouble to a cold heat apparatus and report both the degree of modulation and the cause of modulation. SOLUTION: The analogue values of operation data measured by sensors 9, 10, 11, 12, 13, 14, 15, and 16 are transmitted to an A/D conversion device 2 and converted into a digital value, which is sent to and stored in a managing device 33. In the managing device 33, a detecting condition is previously set regarding a contained operation data item. In the managing device 33, a preset reference value is compared in magnitude with collected operation data. Modulation is recognized and it is detected whether the modulation is light or heavy and further a modulation cause is analyzed and disposed. When abnormality or modulation is detected, the degree of modulation combined with a modulation cause is reported from a transmission reception device 5 to a monitoring device 20 at the terminal of a business and from a transmission reception device 4 through a communication circuit.</p> |
