水表的出戶計量已經成為函待解決的間題。介紹了1種水表計費系統，該系統將水表的計量數據通過RS485總線傳到樓下的水表計費柜，定期山T作人員將計量數據采集到便攜式讀表器內該讀表器通過RS232接口將采集的數據傳到卜位機，完成水表計
費數據的采集、存儲和處理。實踐證明:該系統實現了水表的智能化設計和戶外抄表。
關鍵詞:讀表器RS485總線C8051單片機
中圖分類號:TP29 文獻標識碼:A
Abstract二Water meter out-door reading has become an urgent need. A biling system of water meter; is presented in this paper. The metering
data of water metem are transferred into billing cabinet downstairs through RS485 bus, the operator collects the metering data into portable reader
periodically. Then the data colected are forwarded into host computer through RS232 interface for data acquisition, storage, procesing and
billing. The practice proves that this system implements intelligent design and out-door reading for。water meter.
Keywords;W ater-meterre ader RS485b us C8051s inglec hipc ompute