Water surface flow velocity monitoring device installed on navigation mark
By installing laser current meters at both ends of the navigation mark, using voltage subtractors and absolute value modules for signal processing, and combining audible and visual alarms with wireless transmission, the problem of laser current meters being affected by ships has been solved, achieving high-accuracy monitoring and real-time alarm of water flow speed.
CN224436346UActive Publication Date: 2026-06-30CHANGJIANG LUZHOU WATERWAY BUREAU
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Patent Information
- Application Number
- CN202521966910.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2035-09-12
AI Technical Summary
Technical Problem
In existing technologies, when using laser flow meters to measure water flow velocity, the results are easily affected by passing ships, leading to inaccurate detection results.
Method used
Laser flow meters are installed at both ends of the navigation mark. The voltage difference is calculated by a voltage subtractor. The threshold is determined by an absolute value module and a Schmitt trigger. Combined with an audible and visual alarm module and a wireless signal transmission module, the detection accuracy and warning effect are improved.
Benefits of technology
It effectively reduces detection errors caused by ships, improves the accuracy of water flow speed monitoring, and transmits alarm information in real time via wireless communication.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a water surface flow velocity monitoring device installed on a navigation mark. The water surface flow velocity monitoring device comprises a first laser flow meter, a second laser flow meter, a voltage subtractor, an absolute value module, a Schmitt trigger, an electric control switch module and a sound-light alarm module. The output end of the first laser flow meter is connected with the inverted input end of the voltage subtractor, the output end of the second laser flow meter is connected with the in-phase input end of the voltage subtractor, the output end of the voltage subtractor is connected with the input end of the absolute value module, and the output end of the absolute value module is connected with the input end of the Schmitt trigger. The output end of the Schmitt trigger is connected with the controlled end of the electric control switch module, one end of the electric control switch module is connected with power voltage, the other end of the electric control switch module is connected with the positive electrode of the sound-light alarm module, and the negative electrode of the sound-light alarm module is grounded. According to the utility model, a worker can intuitively judge whether the water flow speed collected by the laser flow meter is accurate or not.
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