| Power supply of communication plays an important role in communication service. Once power supply of communication break down, the whole comunication device will break immediately. Concentrated monitoring is an effective way of ensuring modem communication device nm properly.My subject study in the realization of dynamic environment supervision module in movable stations mainly. Such stations can be seen here and there. Therefore, the key problem is to decrease the cost of monitoring module. My subject is designed on basis of lower cost and higher reliability. It has finished the following job:1)In my design microprocessor which develop environment maturely is the focus of the monitor and AT89C52 is the subject of the monitor. It doesn抰 extend RAM and ROM, increasing the reliability largely. Microprocessor 憇 I/O interface chip is the latest serial interface chip. Comparing with the traditional parallel interface chips, they have fewer legs~ smaller volume and use fewer resources. Therefore, multiple channel data selecting controls keyboar&. display and alarm are realized through AT89C52抯 four eight-bit I/O interface, without extending other I/O interface ,making the system simplified and reliability increased.2)C5 1 language is used to develop microprocessor. It is a structural program design language, which not only has many advanced languages?character but also owns assembly language抯 function. Compiling software with C languagecan decrease development cycle greatly and increase the efficiency and readability of program, which is convenient to improve and extend in order to develop bigger scale and better capability system.My design selects key monitor point in tenn of actual situation in the station, which reflect appliance抯 running condition and avoid the complication of the system. My design emphasizes on realization and reliability all the time. Monitor抯 structure is compact and its application scope is wide. That is , it will have wonderful prospect in the future.
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