Surface velocity and flow direction measuring device

Abstract

The invention discloses a device for measuring a surface velocity and a flow direction of a river, a rivus and the sea. A buoy shell, a mooring cable and a counter weight are arranged on the water. A global positioning system receiver, a signal transmitting device and a power supply are arranged in the buoy shell. A signal receiving device and a terminal are arranged on the bank. In the process of measuring the surface velocity and the flow direction, the global positioning system receiver in the buoy shell receives a signal transmitted by a satellite, so that position coordinates of a location point are known; the point is preserved in a positioning receiver memory and the signal is simultaneously transmitted through the signal transmitting device; and the receiving device receives the signal and is connected with the terminal, so that the real-time monitoring and data processing are realized. The flow velocity and the flow direction are continuously measured, the process of signal receiving, storage, transmitting, far-end receiving and monitoring and processing is circularly carried out, and the work of measuring the flow velocity and the flow direction is automatically completed. According to the device, the middle-distance and remote wireless transmission can be realized in a large space range, the flow velocity and the flow direction are monitored in real time, and manpower and material resources are effectively saved.

Description

technical field [0001] The invention relates to a communication technology for realizing mid-range and long-distance wireless transmission, in particular to a measuring device for measuring surface flow velocity and flow direction data of rivers, rivers and seas. Background technique [0002] The traditional surface velocity and flow direction measurement methods generally use theodolite to locate with the forward intersection method or the polar coordinate method of the total station (according to the Ministry of Communications "Water Transport Engineering Measurement Specifications" JTJ 203-2001, 7.3 and 9.3 regulations). This method has the following disadvantages: [0003] 1. The accuracy is not high, and the measurement conditions are relatively harsh. Generally, three or more stations need to be deployed on the shore for simultaneous observation. Each station is equipped with one person for observation and recording, and one transportation ship is used for buoy release...

AI Technical Summary

Problems solved by technology

[0003] 1. The accuracy is not high, and the measurement conditions are relatively harsh. Generally, three or more stations need to be deployed on the shore for simultaneous observation. Each station is equipped with one person for observation and recording, and one transportation ship is used for buoy release and recovery. A lot of manpower and material resources, and the labor intensity is high, and it is easily affected by human factors and the environment

[0004] 2. The buoy drifts with the waves in the water. Due to the small size of the buoy, it is difficult to track and locate the instrument. It is difficult to ensure that the readings are recorded synchronously between the stations. This requires skilled basic skills and rich experience in rendezvous

[0005] 3. The polar coordinate method of the total station also has the above disadvantages, and it is difficult to realize the mirror positioning when the flow velocity is large

As a result, the measurement of flow velocity and flow direction in the project has large errors, and the investment cost is too high

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