Hall difference equation force measuring method for symmetrical and complementary structure

A symmetrical and force-measuring technology, which is applied in the measurement of fluid pressure involving magnet displacement, the measurement of elastic deformation force through measuring gauges, and the use of electric/magnetic devices to transmit sensing components, etc., can solve the problem of non-linear factors that cannot be eliminated , There are no problems such as non-contact measurement, high magnet size requirements, etc., to achieve the effect of convenient application, offsetting DC component and zero temperature drift, and simple interface
CN101539463AInactive Publication Date: 2009-09-23邱召运
1 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
邱召运
Publication Date
2009-09-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a Hall difference equation force measuring method for a symmetrical and complementary structure. The method comprises the following steps: (1) fixing a cylindrical permanent magnet on an elastic body, symmetrically arranging two linear Hall elements on both sides of the cylindrical permanent magnet without moving along the elastic body so as to ensure that the facing direction of the character sign surfaces of the two linear Hall elements are consistent and parallel to both end faces of the cylindrical permanent magnet and then connecting the two Hall elements into a measuring circuit; (2) applying force F to the elastic body of the step (1) so as to ensure that the cylindrical permanent magnet generates displacement change and recording an output voltage difference value of the two linear Hall elements, wherein the voltage difference value is expressed by delta U; and (3) substituting the delta U value obtained in the step (2) into the formula delta U=delta U0+2KF so as to solve the value of the applied force F, wherein the delta U0 in the formula is a static output voltage difference value of the two linear Hall elements, and K is a linear coefficient. The method has good linearty and higher sensitivity.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a Hall differential force measuring method with a symmetrical complementary structure, which belongs to the technical field of sensors and measurements, and is mainly used for non-contact force measurement. Background technique

[0002] Most of the commonly used force sensors use strain gauges as sensitive elements. The method is to fix multiple strain gauges on the elastic body. The strain gauges form a Wheatstone bridge circuit. When the strain gauges deform with the elastic body, the resistance of the strain gauges The value changes to realize the conversion from mechanical quantity to electrical quantity. This strain-type method has been used for a long time, and it is mainly used in force sensors at present. The disadvantage of the strain type is that the sensitive element is in direct contact with the elastic body. When the elastic body deforms greatly, it will cause permanent damage to the strain gauge. Therefore, it ha...

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