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Flexible magnetic flux sensor and manufacturing and mounting method thereof

A technology of a magnetic flux sensor and an installation method, which is applied to the magnetic measurement environment, measurement device, measurement of magnetic variables, etc., can solve the problems of troublesome operation, inconvenience to carry, complicated production, etc., and achieves easy investigation, easy portability and installation, and easy standardization Effect

Pending Publication Date: 2020-10-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This on-site magnetic flux sensor still has a shortcoming. It needs to be made for each cable that needs to measure the cable force, which takes a long time.
Generally, the sensor remains on the structure after the test. Although it can be removed, the wire will be damaged during the removal process, and the operation is troublesome.
[0005] At present, there are also Haval or two-half magnetic flux sensors, but the production is complicated, the volume is large, the weight is heavy, and it is inconvenient to carry

Method used

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  • Flexible magnetic flux sensor and manufacturing and mounting method thereof
  • Flexible magnetic flux sensor and manufacturing and mounting method thereof
  • Flexible magnetic flux sensor and manufacturing and mounting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The magnetic flux sensor in this embodiment includes an excitation coil and an induction coil, and the selected shaping body is an air bag, which can be used for long-term monitoring. The schematic diagram of the sensor after installation is shown in Figure 10 . The diameter of the cable 26 is 116 mm, and the parameters of each component are designed with reference to the CCT120 magnetic flux sensor (inner diameter 120 mm, outer diameter 200 mm, height 350 mm) of Liuzhou OVM. figure 1 — Figure 4 It is a schematic diagram of the flexible coil assembly in the excitation coil. The flexible wire band 4 has 81 wires 9, the wires 9 are enameled wires with copper wires inside, and the wires 9 are wrapped in plastic; the production of the flexible wire band 4 adopts the production technology of IDE data lines . Respectively pull up a lead wire 9 at the two ends up and down, the upper end is the upper end lead wire 5, and the lower end is the lower end lead wire 6, like this...

Embodiment 2

[0061] This embodiment is a modification of Embodiment 1, and is used for short-term cable force measurement. The difference from Embodiment 1 is that the shaped body of the flexible coil assembly 21 is a thin plate made of soft rubber. Figure 11 Here is a schematic diagram of the end face of the connector of the flexible coil assembly 21. In order to ensure that the connection block 22 will not loosen by itself, two positioning cards 47 are designed on the outer side of the right connector 1. The schematic diagram is shown in the figure Figure 12 . Figure 13 It is a schematic diagram of the end face of the flexible coil-elastic gasket assembly, and the rubber gasket 41 is a shaped body. Figure 14 It is a schematic diagram of the upper end surface of the excitation coil 32. The main components of the excitation coil 32 include the first layer of flexible coil-elastic gasket assembly 42, the second layer of flexible coil-elastic gasket assembly 43, and the third layer of f...

Embodiment 3

[0063] This embodiment is an improved form of embodiment 2, Figure 16 Schematic diagram of the sensor after installation on site. The component for measuring the magnetic field strength in this embodiment is a magnetoelectric sensing element 48 extending out from a magnetic field strength signal line 49 . This makes the structure of the sensor more compact, uses standard electronic components, and improves the accuracy of the sensor. In order to avoid the interference of the surrounding magnetic field on the measurement results, a layer of aluminum foil strip 50 is wound on the outer surface of the excitation coil 32 .

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Abstract

The invention discloses a flexible magnetic flux sensor and a manufacturing and mounting method thereof. The flexible magnetic flux sensor is used for detecting the tension of an exposed steel cable in an existing structure. A coil in the sensor is manufactured by referring to a data line manufacturing technology in a computer CD driver and a hard disk, metal wires are arranged in a plastic protective layer side by side, and corresponding plug connectors are arranged at the two ends of the metal wires. After the plug connectors at the two ends are connected, a flexible coil assembly is formed.During on-site installation, the exciting coil and the induction coil can both be composed of multiple layers of flexible coil assemblies, and all the layers of flexible coil assemblies are connectedthrough wires. The device can be used for long-term measurement and is more suitable for on-site sequential measurement of tension of steel cables in structures. Field installation is simplified, time is saved, modularization is achieved, and disassembly and assembly are convenient.

Description

technical field [0001] The invention relates to a magnetic flux sensor for measuring the force of a cable in a structure and a method for making and installing the same, in particular to a flexible magnetic flux sensor and a method for making and installing the same. Background technique [0002] In recent decades, with the application of cable structures more and more widely, the design calculation theory of suspension cable structures has also been perfected and developed. The cable force control in the construction process and in the existing structure is an important link related to the internal force and state of the structure. The deterioration of structural materials, defects or structural damage caused by accidents will cause the redistribution of internal forces of various components, especially cables. Therefore, how to determine the cable tension of the structure during construction and use has become a major problem for engineering designers. [0003] Commonly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/00G01R33/02G01L5/04
CPCG01R33/0052G01R33/0082G01R33/02G01L5/04
Inventor 魏建东郝放戚丹丹陈家模齐清华
Owner ZHENGZHOU UNIV
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