Channel flow monitoring system

Abstract

The invention discloses a channel flow monitoring system which comprises a control host, and a distance measuring device, a flow velocity measuring device and an acquisition device which are connected with the control host, the distance measuring device is used for measuring a characteristic physical quantity representing channel water level information and transmitting the characteristic physical quantity to the control host; the acquisition device is used for acquiring the section area of the monitored section of the channel and transmitting the section area to the control host; the flow velocity measuring device is used for measuring the flow velocity of a water body at a preset measuring point and transmitting the flow velocity of the water body to the control host, and the preset measuring point is in the monitored section; and the control host is used for performing compensation calibration on the water body flow velocity according to the characteristic physical quantity and the water body flow velocity, and obtaining the water flow of the monitored section according to the compensated and calibrated water body flow velocity and the section area. The channel flow monitoring system provided by the invention can reduce the measurement error of the channel water flow.

Description

technical field [0001] The invention relates to the field of civil water conservancy, in particular to a channel flow monitoring system. Background technique [0002] With the expansion of cities and the continuous development of agriculture and industry, the demand for water is also increasing. Therefore, it is necessary to grasp the hydrological conditions of reservoirs and canals in time to meet the needs of domestic and production water. The flow of open channels is an essential measurement data. [0003] In the prior art, the flow rate of an open channel is usually measured by the flow rate of water, the cross-sectional area of ​​the open channel and other data to calculate the flow rate of the open channel. However, in practical applications, especially in channels with a large amount of sediment in water, the When encountering the accumulation of silt at the bottom of the channel, the shape and size of the water-passing section are affected. In the traditional flow ...

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Problems solved by technology

[0003] In the prior art, the flow rate of the open channel is usually calculated by calculating the flow rate of the open channel using data such as the water flow velocity and the cross-sectional area of ​​the open channel. However, in practical applications, especially in channels with a large amount of sediment in the water, often There is silt accumulation at the bottom of the channel, which affects the shape and size of the cross section

In the traditional flow calculation process, the amount of silt and the change of the section cannot be obtained, so the accuracy of flow measurement will be affected to varying degrees

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