描述了DSP 控制實現(xiàn)的明渠非接觸式流量計，對非接觸式流量計的數(shù)據(jù)采集結(jié)構(gòu)及通信接口電路組成做了詳細(xì)討論。介紹了在多數(shù)據(jù)量采集以及實時處理的要求下，采用數(shù)字信號處理器TMS320LF2407A實現(xiàn)采樣運(yùn)算的方案。采用FIR 算法對采樣數(shù)據(jù)進(jìn)行數(shù)字低通濾波，將數(shù)據(jù)通過串行口傳送到上位機(jī)實現(xiàn)遠(yuǎn)程監(jiān)控。根據(jù)所提出的方案研制了一臺基于TMS320LF2407A 明渠污水流量計。
關(guān)鍵詞： DSP 污水流量計 多數(shù)據(jù)量采集 數(shù)字濾波 通信
Abstract: Describing the open channel flowmeter implementation based on digital signal processor TMS320LF2407A, discussing in detail data acquisition structure and communication interface circuit compositon. Under the demand for multi-data acquisition and real-time processing, adopting digital signal processor TMS320LF2407A to realize the scheme of sampling arithmetic. Accomplishing digital low pass wave filtering to sampling data with FIR algorithm, Realizing remote control through serial port and data is conveyed to upper
level computer. According to the schemes,developing a open channel flowmeter based on TMS320LF2407A.
Keywords: DSP；sewage flowmeter；multi-data acquisition；digital filtering wave；485 communication interface circuit