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Displacement measuring sensor

A displacement measurement and sensor technology, applied in the field of precision displacement measurement devices, can solve the problems of high price, poor anti-interference ability, complex structure, etc., and achieve the effect of simple structure, strong anti-interference ability and small size

Inactive Publication Date: 2003-04-30
重庆工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the disadvantages of existing grid displacement sensors are: high price, complex structure, poor anti-interference ability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 , 2 , 3, 4 and Figure 9 , is the structure of the angular displacement measuring sensor, and this sensor is that the angular displacement coil winding 1-2 on the same angular displacement coil iron core 1-3 as the AC motor is evenly distributed in the circular shell as the angular displacement scale 1-1 according to the circumference , the AC motor has been turned or an additional rotating shaft is used as the angular displacement ruler 1-4. An angular displacement measuring head conductor 1-6 is fixed at the gap between any adjacent coils of the angular displacement measuring length 1-1. The input terminal of the circuit is connected. An angular moving measuring head conductor 1-5 is fixed on the angular moving ruler 1-4, and the two ends of the conductor are used as the output end of the moving measuring head, and are connected with the input end of the signal amplification and shaping circuit through an insulated wire. When the angular displacement ...

Embodiment 2

[0033] Figure 5 , 6 , 7, 8 and Figure 9 , is a linear displacement measurement sensor structure, and the working principle of the linear displacement measurement sensor is exactly the same as that of Embodiment 1. The difference is that the shell of the AC motor and the linear displacement coil windings 2-2 on the linear displacement coil iron core 2-3 evenly distributed on the circumference are unfolded in a straight line to form a linear displacement fixed length 2-1, A linear displacement measuring head conductor 2-6 is fixed at the gap between any adjacent linear displacement coil windings 2-2 of the ruler 2-1; the linear displacement ruler 2-4 is a linear displacement coil winding 2-2 A sliding ruler that moves linearly in the traveling wave magnetic field generated by alternating current, a linear moving probe conductor 2-5 that moves linearly with the linear moving ruler 2-4 is fixed on the moving ruler body, and the traveling wave magnetic field The motion speed o...

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Abstract

The invention relates to a sensor for measuring displacements belonging to the fine measurement device of displacements. The magnetic field of the travelling wave is adopted to build the moving coordinate system. The coil winding with AC current being provided forms the magnetic field of the travelling wave. The coil winding is as the fixed scale, and the moving piece in the magnetic field of thetravelling wave is as the moving scale. The conductors fixed on the fixed scale and the moving scale respectively constitutes the conductor of the fixed measuring head and the conductor of the movingmeasuring head. The output end of the said two measuring heads are connected to the input end of the signal multiplication shaping circuit.

Description

technical field [0001] The invention belongs to a displacement precision measurement device, in particular to a displacement measurement sensor for measuring linear displacement and angular displacement. technical background [0002] Displacement (linear displacement or angular displacement) measurement is the most basic and common measurement. In order to take into account the measurement resolution and range, many displacement sensors adopt a grid structure that is precisely engraved on the substrate, such as a grating, a magnetic grid, etc., and the pulse signals sent by it during the movement are accumulated and counted, that is, the displacement measurement is realized. High-precision and high-density engraved lines cause many problems. On the one hand, the denser the engraved lines, the easier it is to be polluted. No matter how it is sealed and protected, under the harsh working conditions of the production site, its tiny dust, oil, sewage and gas may pollute the gri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/04G01B7/30
Inventor 彭东林张兴红刘小康
Owner 重庆工学院