一种水下流速流向测量装置
By combining an inertial measurement unit and a pressure sensor, an underwater velocity and direction measurement device has been developed, which solves the problems of large size, high power consumption, difficult maintenance and reduced accuracy of existing equipment. It achieves low-cost, easy-to-maintain, multi-parameter integrated velocity and direction measurement, adapts to complex aquatic environments and is suitable for small equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO SENKETE INTELLIGENT INSTR CO LTD
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing underwater velocity and direction measurement equipment is large in size, consumes a lot of power, is expensive, is difficult to maintain, and is difficult to integrate multi-parameter measurements. In particular, its accuracy decreases in complex water environments, making it difficult to meet the requirements of small size, low cost, and high integration.
An underwater flow velocity and direction measurement device combining an inertial measurement unit (IMU) and a pressure sensor integrates flow velocity, flow direction, depth, and temperature data. It is deployed using a cable-suspended method, avoiding mechanical rotating parts and complex acoustic systems, and adopts a low-power design.
It achieves low-cost, easy-to-maintain, multi-parameter integrated flow velocity and direction measurement, adapts to complex aquatic environments, is suitable for small equipment, has strong adaptability, and is suitable for long-term unattended environments.
Smart Images
Figure CN224518751U_ABST
Abstract
Claims
1. An underwater current speed and direction measuring device comprising a weight (1), a cable (2) and a current speed and direction meter body (14), characterized in that The weight (1) is located above the flow velocity and direction meter body (14), and the cable (2) is connected to the weight (1) and the flow velocity and direction meter body (14) in sequence. The cable (2) is a waterproof cable with built-in power line and communication line. The flow velocity and direction meter body (14) includes a sensor chamber (5) and a cover (3) fixed to the top of the sensor chamber (5) by bolts. A circuit board (9) is fixedly installed on the bottom of the cover (3) by a mounting plate (8). The circuit board (9) is located inside the sensor chamber (5). The circuit board (9) integrates a main control chip (10) and an inertial measurement unit (IMU) (11). A pressure sensor (12) is screwed onto the upper side of the cover (3) to provide depth and temperature data. The pressure sensor (12) is connected to the circuit board (9) for communication. A cross-shaped guide plate (6) is fixedly installed at the bottom of the sensor housing (5), and a waterproof connector (7) is fixedly installed at the top of the cover (3). The end of the cable (2) passes through the waterproof connector (7) and enters the flow velocity and direction meter body (14) to connect with the circuit board (9). A cable clamp (4) is provided on the outside of the waterproof connector (7), and the lower waterproof connector (7) of the cable clamp (4) is fixed to the cover by bolts.
2. The underwater flow velocity and flow direction measuring device according to claim 1, characterized in that The material of the weight (1) is stainless steel.
3. The underwater flow velocity and flow direction measuring device according to claim 1, characterized in that The sensor housing (5) is a waterproof and sealed housing.
4. The underwater flow velocity and flow direction measuring device according to claim 1, characterized in that The hatch cover (3) and the sensor housing (5), as well as the hatch cover (3) and the pressure sensor (12), are sealed with O-rings.
5. The underwater flow velocity and flow direction measuring device according to claim 1, characterized in that The cross-shaped guide plate (6) includes four symmetrically arranged stainless steel vertical guide vanes.