Video buoy flow measurement system

Abstract

The invention discloses a video buoy flow measurement system, which includes a video image acquisition system, a computer terminal control system and a buoy; the video image acquisition system includes an upper section camera, a section camera, a lower section camera and an upper section pan-tilt camera; The computer terminal control system includes a hard disk video recorder and a control computer arranged in the control room; the upper section camera, the section camera, and the lower section camera are respectively connected to the hard disk video recorder through cables; The cables are connected to the control computer. The flow measurement system of the present invention utilizes video monitoring technology to display the real-time conditions and images of the water surface buoys flowing through the upper, middle and lower section lines in real time to complete the hydrological monitoring work. It has the following characteristics: manpower saving, safety and reliability, high measurement accuracy, adaptability Strong performance and wide application range.

Description

technical field [0001] The invention belongs to the technical field of river hydrological monitoring, and in particular relates to a video buoy flow measuring system for monitoring river flow at a hydrological station. Background technique [0002] Hydrological monitoring plays an extremely important role, involving various aspects such as flood control safety, hydrological and water conservancy calculations, and water resource evaluation. It takes a lot of manpower and material resources to complete the monitoring task every year. As an indispensable equipment in monitoring work, flow measuring equipment plays a vital role. At present, there are roughly the following types of flow measuring equipment in hydrological stations: [0003] 1. Cableway equipment, including main and auxiliary cables, circulating cables, lead fish and cableway control system, the current meter is installed on the lead fish, and the console controls the vertical and horizontal movement of the lead f...

AI Technical Summary

Problems solved by technology

First of all, the cableway cannot be used to measure the flow, because a large number of floating objects will scratch the current meter and even endanger the safety of the entire cableway system and equipment

The second method is to measure the flow of the bridge measuring vehicle. The lead fish suspended by the bridge measuring vehicle is generally relatively small. When the flow velocity is as high as 7 to 8 meters and accompanied by a large number of floating objects, the lead fish and the current meter cannot enter the water, otherwise the bridge will be endangered. The life safety of the test vehicle and the surveyors, if there is no bridge at the test station, it is impossible to use the bridge test vehicle to measure the flow

The third method is to use the buoy method to measure the flow. This method is an effective method of flow measurement, but it needs five people to cooperate with each other to complete the flow measurement work. At present, most hydrological stations are staffed with less than 5 people , some hydrological stations even have only one or two people, so this method is also limited

The fourth method is to use the gradient area method. This method requires high observation accuracy of the gradient, otherwise the calculated flow rate will have a large error and it is not easy to popularize.

The fifth method is to use ADCP equipment to measure the flow. Since the ADCP equipment is worth hundreds of thousands of yuan, it needs to be installed on the side of the ship. It is easy to capsize at a flow velocity of 7 to 8 meters. Moreover, the ADCP equipment cannot withstand the friction and collision of a large number of floating objects. , so it cannot be used in the case of medium to large water

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