【摘要】：為解決渠道流量在線實時監(jiān)測問題,依據聲學多普勒頻移的物理原理,開發(fā)了底座式IQ渠道流量自動監(jiān)測系統(tǒng),實現了流量數據實時自動采集,并通過GPRS等信道傳送到中心站。中心站可對數據進行分析、處理、存儲、轉錄、發(fā)布以及遠程實時查詢流量、工作狀態(tài)、時段水量等。以云南牛欄江-滇池補水工程輸水線路末端站為例,介紹了系統(tǒng)的工作原理、安裝測量過程,分析了其監(jiān)測精度。結果表明,與美國SONTEK公司的M9走航式聲學多普勒水流剖面儀相比,IQ系統(tǒng)的測量誤差在±5%以內,最大誤差為-6.71%,系統(tǒng)誤差為-0.9%,滿足相關規(guī)范要求。
[Abstract]:In order to solve the problem of on-line real-time monitoring of channel flow, based on the physical principle of acoustic Doppler frequency shift, a pedestal IQ channel flow automatic monitoring system is developed. The real-time and automatic collection of flow data is realized and transmitted to the central station through channels such as GPRS. The central station can analyze, process, store, transcribe, publish and remotely query the traffic, working status, period water and so on. Taking the end station of the water conveyance line of Niulanjiang-Dianchi Lake supplementary water project in Yunnan as an example, this paper introduces the working principle of the system, the process of installation and measurement, and analyzes its monitoring accuracy. The results show that the measurement error of the IQ system is within 鹵5%, the maximum error is -6.71 and the systematic error is -0.9, compared with the M _ 9 acoustic Doppler flow profiler of SONTEK Company, which meets the requirements of relevant specifications.
【作者單位】： 云南省水文水資源局昆明分局;
【分類號】：P335

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