Open channel section water flow online measuring device and measurement and control method

Abstract

The invention discloses an open channel section water flow online measuring device and a measurement and control method. The device comprises a measuring supporting frame, a measuring rod assembly is fixedly installed on the measuring supporting frame, a side rod assembly communicates with a signal processing control host 11, the measuring rod assembly comprises a measuring rod 8 and a measuring rod driving mechanism, and a set of sensors are arranged on the side rod 8. The measuring rod driving mechanism comprises a measuring rod lifting motor 10, an output shaft of the measuring rod lifting motor 10 is fixedly connected with a coded disc 4 and a shaft angle encoder 5, and the coded disc 4 is fixedly connected with the measuring rod 8. The technical problem to be solved by the invention is to provide the open channel section water flow online measurement device and the measurement and control method so as to solve the problems that the existing open channel flow measurement equipment realizes multi-vertical-line multi-measurement-point water flow real-time online measurement according to relevant national standards, and the measurement is inaccurate under the conditions of turbid water body, silted channel, sundries in the water body and the like. The problem of real-time online flow measurement of the open channel can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of open channel flow measurement, in particular to an online measurement device and a measurement and control method for water flow in open channel sections. Background technique [0002] At present, the water flow measurement of open channels mostly adopts the flow velocity area method, the standard section method, the canal system building method and the weir and flume method. There are problems such as low measurement accuracy. In order to realize the accurate measurement of open channel flow, the flow velocity area method is mostly used. Common flow velocity measurement methods include acoustic Doppler, radar, rotor, etc. The acoustic Doppler has the problem that it is greatly affected by water quality. It is not suitable for occasions with a lot of water and water quality debris. In addition, most of the online flow measurement is fixed on the bank slope of the channel, which can only realize the flow ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an online measuring device and method for measuring and controlling the flow of open channel cross-section, so as to solve the problem that the existing open channel flow measuring equipment cannot realize simultaneous real-time online and stable measurement of multiple vertical lines and multiple measuring points, especially for turbid water bodies, It can effectively solve the problem of real-time online flow measurement in open channels, improve the accuracy of open channel water flow measurement, and then improve the management level of open channel water flow measurement.

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