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Compact redundant built-in magnetostriction displacement sensor

A displacement sensor and magnetostrictive technology, applied in the direction of instruments, measuring devices, electrical devices, etc., can solve the problems that the built-in magnetostrictive displacement sensor cannot be replaced or easily replaced, and the requirements for measurement stability are high, achieving compact structure, The effect of good compatibility and high reliability

Active Publication Date: 2021-04-27
北京特倍福电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the present invention provides a compact and redundant built-in magnetostrictive displacement sensor, which can solve the problem of high measurement stability requirements in special occasions such as continuous operation of equipment, high temperature and high pressure, flammable and explosive, and military missions. Or the problem that the built-in magnetostrictive displacement sensor cannot be replaced or easily replaced

Method used

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  • Compact redundant built-in magnetostriction displacement sensor
  • Compact redundant built-in magnetostriction displacement sensor

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as Figure 1-2 As shown, this embodiment provides a compact redundant built-in magnetostrictive displacement sensor, the compact redundant built-in magnetostrictive displacement sensor includes a housing, a first redundant sensor element, a second redundant sensor element, a measurement Rod 2 and magnetic ring 3, the measuring rod 2 is connected to the lower end of the housing, the magnetic ring 3 is slidably sleeved on the outer periphery of the measuring rod 2, the first redundant sensor element and the second Redundant sensor elements are arranged side by side in the housing and the measuring rod 2 .

[0030] The first redundant sensor element and the second redundant sensor element in this embodiment have independent power supply and signal output systems, and the two systems can work independently regardless of primary or secondary.

[0031] There are three working modes:

[0032] In the same signal output mode, the signal types and effective signal ranges o...

Embodiment 2

[0038] Such as Figure 1-2 As shown, the compact redundant built-in magnetostrictive displacement sensor also includes a first wiring harness 9, a second wiring harness 10, an internal wiring harness 24, a first compression screw 8 and a second compression screw 11, and the housing includes electronic Compartment 6 and electronic compartment tail cover 7, the internal wiring harness 24 is located in the housing, the lower end of the electronic compartment 6 is connected to the measuring rod 2, and the upper end is open, and the electronic compartment tail cover 7 covers the electronic compartment 6 The upper end of the upper end is open, the first wire harness 9 and the second wire harness 10 are respectively connected to the electronic compartment tail cover 7 through the first compression screw 8 and the second compression screw 11 in parallel from top to bottom, and the first The wire harness 9 and the second wire harness 10 are respectively connected to the first redundant...

Embodiment 3

[0041] Such as Figure 1-2 As shown, the outer circumference of the housing is provided with retaining rings 5 ​​and O-rings 4 at intervals from top to bottom, and the lower end of the measuring rod 2 is sealed by the end cap 1 . In this embodiment, the retaining ring 5 and the O-ring 4 are provided to facilitate the installation, fixation and sealing of the housing, and the sealing of the lower end of the measuring rod 2 is facilitated through the end cap 1 .

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Abstract

The invention discloses a compact redundant built-in magnetostriction displacement sensor. The sensor is installed in an oil cylinder in use and used for accurately measuring the telescopic displacement of the oil cylinder. Two sets of complete software and hardware systems are integrated in a limited internal space, two paths of signals working independently can be output, and an independent power supply and signal output are provided. The device of the invention has three working modes, namely, identical signal output, differentiated signal output and redundancy; and the sensor can adapt to applications with high requirements on measurement stability and reliability in special occasions such as equipment in continuous operation, high temperature and high pressure, flammable and combustible occasions, military tasks and the like; and the problem that a built-in magnetostriction displacement sensor cannot be replaced or is easy to replace is solved.

Description

technical field [0001] The invention relates to the field of displacement distance measurement of high temperature and high pressure, flammable and explosive, military and other hydraulic transmissions, in particular to a displacement measurement with high precision, high stability, compact redundancy and built-in magnetostrictive principle with two-way signal output device. Background technique [0002] At present, magnetostrictive technology is widely used in military, petrochemical, machinery manufacturing, metallurgy, energy and other industries due to its high precision and reliability. The built-in magnetostrictive displacement sensor is installed inside the oil cylinder when in use, and is used to accurately measure the telescopic displacement of the oil cylinder. [0003] The magnetostrictive displacement sensor is composed of armor shell and internal electronic devices. Since it is installed inside the oil cylinder and designed to cope with high pressure, the stren...

Claims

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Application Information

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IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 杨俊营
Owner 北京特倍福电子技术有限公司
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