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Underwater two-dimension rope pulling velocimeter

A rope-drawn velocimeter and speed-measuring technology, which is applied in the field of measurement, can solve the problems affecting the scope of application, various influencing factors, and large measurement errors, and achieve the effects of high cost performance, strong scalability, and simple structure

Inactive Publication Date: 2008-01-30
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the underwater speed measurement environment is complex and there are many influencing factors, and the existing speed measurement instruments cannot meet the test requirements and adapt to the underwater speed measurement environment well, or the cost is too high for ordinary users to afford. Specific subject research has brought great inconvenience
In addition, most of the existing rope sensor products on the market (such as the PT series produced by the American CELESCO company and the German WAYCON type) are directly connected to the measured object through a highly flexible stainless steel core, and the principle of constant force spring balance is applied. , the linear motion is converted into rotary motion, and the position information is obtained through the encoder. The rotation mechanism uses a constant force spring instead of a constant torque motor, which seriously affects the scope of application. In the case of large acceleration, it may occur Non-recoverable deformation changes the constant force, resulting in large measurement errors

Method used

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  • Underwater two-dimension rope pulling velocimeter
  • Underwater two-dimension rope pulling velocimeter
  • Underwater two-dimension rope pulling velocimeter

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 11, the present embodiment includes a T-shaped support 1 installed on land, fixed pulleys 2, 3 and a speed sensor are respectively installed at the end of the support. This scheme is mainly aimed at when there is a height difference between the operating site and the underwater experiment environment in the experimental environment, the bracket 1 is used to adjust the pull rope and the object to be measured to maintain the same level to ensure the accuracy of the speed measurement. Connect the pull rope in the sensor to the underwater measured object through the fixed pulley of the bracket for speed / displacement measurement.

[0032] Combined with Figure 8-10, the speed measuring sensor includes two parts: the speed measuring mechanism and the internal control circuit. The wire reel is set coaxially, the pull rope on the reel is directly connected to the measured object, the internal control circuit is set in the box, the speed measuring torque motor is electrically con...

Embodiment 2

[0047] With reference to Fig. 13, the composition of the second embodiment of the present invention includes two speed sensors A, B and some auxiliary components. This program is mainly aimed at the situation where the navigation distance is relatively long and the altitude difference between the operating environment and the experimental environment is negligible. The specific operations are as follows:

[0048] Select two fixed positions on the lateral side to fix the speed sensor respectively. The distance between the two sensors is represented by a, and the distance between the rope exit point of the speed sensor and the water surface is h, and a and h are fixed values. The two ropes coming out of the speed sensor are on the vertical line of the center of buoyancy-center of gravity of the measured object, and the geodetic coordinate system E-ξηζ is established with one of the speed sensors as the coordinate origin, and the measured object is established with the center of g...

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Abstract

The invention provides a novel rope sensor in underwater two-dimensional situation utilizing the constant tension principle of torque motors. The rope sensor comprises two parts of a velocity-measuring mechanism and an inner control circuit, wherein, the velocity-measuring mechanism comprises a support, a case arranged at one end of the support, a reel and a velocity-measuring torque motor which are arranged in the case and share the same shaft. The rope on the reel is connected directly with the object under test. The inner control circuit is arranged in the case and electrically connected with the velocity-measuring torque motor and an outside super-computer controller respectively. The invention can be adapted to underwater moving object velocity-measuring environment and has the advantages of simple structure, easy mounting, high cost performance, durability, practicability, suitability for general scientific studies and high expandability.

Description

(1) Technical field [0001] The invention relates to the field of measurement, and specifically designs the measurement of the velocity and displacement of a measured object in an underwater two-dimensional environment. (2) Background technology [0002] At present, the underwater speed measurement environment is complex and there are many influencing factors, and the existing speed measurement instruments cannot meet the test requirements and adapt to the underwater speed measurement environment well, or the cost is too high for ordinary users to afford. Specific subject research has brought great inconvenience. In addition, most of the existing rope sensor products on the market (such as the PT series produced by the American CELESCO company and the German WAYCON type) are directly connected to the measured object through a highly flexible stainless steel core, and the principle of constant force spring balance is applied. , the linear motion is converted into rotary motio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/26G01D5/347G01D5/36G01P3/42
Inventor 张铭钧王玉甲徐建安窦普刘晓白储定慧赵文德齐军
Owner HARBIN ENG UNIV
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