In this paper , firstly , the key techniques concerned with the monitoring system of pollution sources are analyzed . secondly , the function of the monitor is positioned , and it ' s designed that a modularized hardware system , including the main control module , display and keypad module , dial control module and lonworks control module , which adapts the cooperation of microprocessors 本論文首先分析了污染源監測系統關鍵技術,從而定位儀表的功能,設計了模塊化的硬件結構,包括主控模塊、顯示鍵盤模塊、撥號控制模塊和lonworks控制模塊,采用了多微處理器協同工作。