Accurate flow velocity measurement method and system based on unmanned boat

By using unmanned ships in the waterway to measure the flow rate and select appropriate measurement methods according to the flow rate situation, the problems of high equipment costs, difficulty in maintenance and high labor intensity in the prior art are solved, and high precision and low cost flow rate measurement is achieved.

CN117871888BActive Publication Date: 2025-03-25CCCC SECOND HARBOR ENGINEERING CO LTD
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Patent Information

Application Number
CN202311643483.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-04
Publication Date
2025-03-25
Estimated Expiration
2043-12-04

AI Technical Summary

Technical Problem

The existing waterway flow rate measurement methods have problems such as high equipment cost, difficulty in maintenance, high labor intensity, and insufficient adaptability. In some flow rate intervals, the measurement accuracy is high but the error is large when it exceeds the interval.

Method used

The flow rate accurate measurement method based on the unmanned ship is adopted. After the flow rate is initially measured, the drifting method or single-point positioning method is selected for accurate measurement according to the flow rate situation. The drifting method measures the flow rate through the drifting of the unmanned ship, and the single-point positioning method measures the flow rate by controlling the relative water flow of the unmanned ship at rest.

Benefits of technology

It improves the accuracy and adaptability of flow rate measurement, reduces equipment cost and operation difficulty, and is suitable for large-scale promotion and use.

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Abstract

The present invention relates to the field of water level monitoring technology, and specifically refers to a method and system for accurately measuring flow velocity based on an unmanned ship. The method comprises the following steps: S1, the unmanned ship is lowered to the river channel to be measured, and the zeroing position of the measuring section of the river channel to be measured is selected and set; S2, the unmanned ship performs preliminary measurement of the flow velocity of the river channel to be measured to obtain a preliminary flow velocity; if the preliminary flow velocity is greater than the set flow velocity, the unmanned ship selects the drifting method to measure the flow velocity; if the preliminary flow velocity is not greater than the set flow velocity, the unmanned ship selects the single-point positioning method to measure the flow velocity. The present application selects a corresponding measurement method according to the flow velocity of the river channel, and can accurately measure the flow velocity of the river channel according to the flow velocity conditions. The entire measurement method is stable and efficient, and has great promotion value.
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