Unlock instant, AI-driven research and patent intelligence for your innovation.

Displacement sensor and method for measuring displacement by using same

A displacement sensor and displacement technology, applied in the direction of measuring devices, instruments, and electric devices, can solve the problems of high manufacturing cost, complicated production process, poor precision, etc., and achieve improved product yield, simple production process, and reduced manufacturing cost Effect

Active Publication Date: 2014-11-26
HITACHI BUILDING TECH GUANGZHOU CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The output of the stroke sensor realized by the reed switch is not adjustable, and the accuracy is relatively poor. These are due to the large volume of the reed switch itself, and the installation density cannot be very high, so the resolution of the displacement sensor is relatively poor.
[0003] The displacement sensor based on the Hall effect has high power consumption, high price and cost, and poor cost performance, which is not suitable for large-scale production.
Although the displacement sensor designed with magnetostrictive technology has high precision, the production process is complicated, the manufacturing cost is relatively high, and the price is expensive.
[0004] Considering cost, volume, performance, power consumption and production process, etc., under the premise that the structure of the displacement sensor is not easy to improve, the general excitation mechanism is outside, and the detection module is inside. New methods and principles are not easy to apply, thus increasing product design. difficulty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Displacement sensor and method for measuring displacement by using same
  • Displacement sensor and method for measuring displacement by using same
  • Displacement sensor and method for measuring displacement by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see figure 1 Shown is a structural block diagram of the displacement sensor of the embodiment of the present invention. Such as figure 1 As shown, the displacement sensor of this embodiment includes: a reluctance switch array module 1, a parallel / serial module 2, a microprocessor 3, a digital-to-analog converter 4, an operational amplifier 5, and a displacement magnet 6, such as figure 2 As shown, the reluctance switch array module 1 includes reluctance switches 100 distributed linearly according to preset intervals, and the moving direction of the displacement magnet 6 matches the distribution direction of the reluctance switches 100. If it is distributed in a straight line from left to right, then the moving direction of the corresponding direction displacement magnet 6 is also set to move left and right accordingly. The serial interface of 2 is connected with microprocessor 3, and microprocessor 3 also connects digital-to-analog converter 4, operational amplifier ...

Embodiment 2

[0030] According to the displacement sensor mentioned in embodiment 1, this embodiment provides the method for applying this displacement sensor to measure displacement, wherein, as figure 1 As shown, the displacement sensor includes: a reluctance switch array module 1, a parallel / serial module 2, a microprocessor 3, a digital-to-analog converter 4, an operational amplifier 5, and a displacement magnet 6, such as figure 2 As shown, the reluctance switch array module 1 includes reluctance switches 100 distributed linearly according to preset intervals, and the moving direction of the displacement magnet 6 matches the distribution direction of the reluctance switches 100. If it is distributed in a straight line from left to right, then the moving direction of the corresponding direction displacement magnet 6 is also set to move left and right accordingly. The serial interface of 2 is connected to the microprocessor 3, and the microprocessor 3 is also connected to the digital-to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a displacement sensor and a method for measuring the displacement by using the same. The displacement sensor comprises a magnetic resistance switch array module, a parallel / serial module, a microprocessor, a digital-to-analog converter, an operational amplifier and a displacement magnet, wherein the magnetic resistance switch array module comprises magnetic resistance switches which are in linear distribution according to the preset interval; all the magnetic resistance switches are connected with a parallel interface of the parallel / serial module, in sequence; a serial interface of the parallel / serial module is connected with the microprocessor which is also connected with the digital-to-analog converter and the operational amplifier in sequence; the microprocessor acquires state information of all the magnetic resistance switches in the magnetic resistance switch array module by the parallel / serial module, obtains relative position information of the displacement magnet according to the state information of all the magnetic resistance switches, carries out digital-to-analog conversion by the digital-to-analog converter and carries out amplification and adjustment of the operational amplifier. The invention has the advantages that the manufacturing cost of a product can be greatly reduced, the production process is simple, the finished product rate is effectively improved and the production efficiency is increased.

Description

technical field [0001] The invention relates to the field of automation control, in particular to a displacement sensor and a method for measuring displacement by the displacement sensor. Background technique [0002] At present, equipment in the fields of coal, chemical industry, petroleum, and metallurgy in my country mostly use displacement sensors or stroke sensors to realize automatic control of equipment and improve production efficiency. However, the traditional displacement sensors in the current market mostly use the reed switch resistance voltage divider type, and the position is judged by triggering different reed switches to obtain corresponding output voltages or currents. The dry reed switch is fragile in a violent environment, the switch is easy to shake, and it is easy to pull in after long-term use, which will cause the entire sensor to be scrapped, it is difficult to exert the optimal performance of the system, and it is easy to cause accidents. Due to the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 王新军余佳鑫陆庭锴冯卓照贾宇辉郭伟文仲兆峰
Owner HITACHI BUILDING TECH GUANGZHOU CO LTD