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Strain type sensor and manufacturing method thereof

A technology of a strain gauge sensor and a manufacturing method, which is applied in the direction of instruments, measuring devices, measuring force, etc., can solve the problems of sensor stability, poor precision, incapable of mass production, poor zero point stability, etc., and achieve good insulation, Easy to purchase, easy to process and produce

Inactive Publication Date: 2016-12-21
XIAN CHINASTAR M&C
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, since the strain gauge is produced by pasting constantan and other metal foils on the substrate with glue, the strain gauge is processed through a series of processes, and the strain gauge needs to be pasted on the elastic substrate with glue when the sensor is made. The stability and accuracy of the sensor produced according to this method are not very good, especially the zero point stability is poor
[0004] Second, it cannot be mass-produced, and the quantity produced each time is small, so it can only be produced one by one

Method used

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  • Strain type sensor and manufacturing method thereof
  • Strain type sensor and manufacturing method thereof
  • Strain type sensor and manufacturing method thereof

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Effect test

Embodiment 1

[0054] Such as figure 1 and Figure 4 As shown, the strain sensor of the present invention includes an elastic base 1, an insulating medium layer 2 covering the elastic base 1, and a conductive film layer 3 covering the insulating medium layer 2, and a resistance bridge 5 is arranged on the conductive film On the layer 3, an insulating protective layer 4 is provided on the conductive film layer 3 and the insulating medium layer 2, the number of layers of the insulating medium layer 2 is at least one layer, and the number of layers of the insulating protective layer 4 is at least for one layer.

[0055] In this embodiment, the insulating medium layer 2 can be multilayer, and the insulating medium layer 2 of the multilayer is the same or different insulating medium, and the insulating protection layer 4 can be multilayer, and the insulating protection layer 4 of the multilayer can be multilayer. Layer 4 is the same or different insulating medium. The shape of the elastic matr...

Embodiment 2

[0059] The only difference between this embodiment and Embodiment 1 is that the strain gauge sensor also includes a protective cover 6 arranged on the insulating protective layer 4, and the protective cover 6 is provided with a lead-out wire for the resistance bridge 5. The lead-out hole 7, the thickness of the protective cover 6 is 0.05mm-10mm, and the distance between the inner surface of the top of the protective cover 6 and the upper surface of the insulating protection layer 4 is 0.05mm-10mm.

[0060] In this embodiment, the protective cover 6 is provided with a ventilation hole 8, and the ventilation hole 8 is an oval hole, a rectangular hole or a regular polygonal hole.

[0061] In this embodiment, the lead-out hole 7 is a circular hole, the diameter of the lead-out hole 7 is 0.3 mm to 5 mm, and the length of the lead-out line is 1 mm to 100 mm; the ventilation hole 8 is a circular hole , The diameter of the vent hole 8 is 0.1mm˜10mm.

Embodiment 3

[0064] This embodiment includes the following steps:

[0065] Step 1, pretreatment of the elastic matrix: when the elastic matrix 1 is 304 stainless steel or 316L stainless steel, the first choice is to carry out stress relief annealing treatment on the elastic matrix 1, wherein, the temperature of the stress relief annealing treatment is 475 ° C, and the stress relief annealing treatment The time is 4 hours; then, the surface of the elastic matrix 1 after the stress relief annealing treatment is ground, the specific process is: select an abrasive with a particle size of 17 μm, and grind the surface of the elastic matrix 1 that has been heat-treated in step 101 until it becomes elastic The roughness of the upper and lower surfaces of the substrate 1 is 0.8 μm to 1.6 μm; finally, decontamination and drying are performed on the ground elastic substrate 1; the thickness of the elastic substrate 1 is 50 mm;

[0066] In the actual production process, the elastic matrix 1 is degreas...

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Abstract

The invention provides a strain type sensor which comprises an elastic substrate, an insulating dielectric layer and a conductive film layer. A resistor bridge is arranged on the conductive film layer. An insulating protective layer is arranged on the conductive film layer and the insulating dielectric layer. The invention further discloses a strain type sensor manufacturing method. The method comprises the steps of elastic substrate pre-processing, conductive film layer pre-processing, lamination plate manufacturing, resistor bridge etching, insulating protective layer forming and division. A number of strain type sensors can be manufactured at one time. According to the invention, the strain type sensor and the manufacturing method thereof have the advantages of simple structure, reasonable design, simple production method, high production efficiency and good use effect; a number of strain type sensors can be manufactured at one time; the stability and the precision of the strain type sensor are improved; the production efficiency is remarkably improved; and the strain type sensor and the manufacturing method thereof have wide application and promotion values.

Description

technical field [0001] The invention belongs to the technical field of strain sensors, and in particular relates to a strain sensor and a manufacturing method thereof. Background technique [0002] Strain gauge sensor is a sensor based on measuring the strain generated by the force deformation of an object. The strain gauge sensor is mainly used in: monitoring, control and physical quantity measurement, and is widely used in many fields such as life, industrial control, and military industry. At present, the strain gauge sensors mainly used include strain gauge pressure sensors, strain gauge load cells, strain gauge torque sensors, and metal resistance strain gauges for measuring force, torque, and pressure. The existing strain gage sensor is manufactured as follows: firstly produce the strain gauge in a standardized manner (etching the resistance bridge on the conductive film layer first), and then glue the strain gauge on the elastic substrate according to different applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
CPCG01L1/2262
Inventor 迈克尔·奥特文谷荣祥郭和平万桦坪
Owner XIAN CHINASTAR M&C
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