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Sensor preparation method, strain grid preparation device and sensor

A sensor and temperature strain technology, applied in the field of sensors, can solve problems such as environmental pollution and difficult degradation of sensors

Pending Publication Date: 2021-05-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, pressure sensors, piezoresistive pressure sensors mainly use constantan as the sensitive material, semiconductor pressure sensors use silicon wafers as the substrate, and temperature sensors such as bimetallic sensor and thermocouple sensor require metal as the sensitive device. While meeting the requirements of use, discarded sensors are difficult to degrade, which brings huge environmental pollution

Method used

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  • Sensor preparation method, strain grid preparation device and sensor
  • Sensor preparation method, strain grid preparation device and sensor
  • Sensor preparation method, strain grid preparation device and sensor

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] The preparation process of sensor of the present invention is:

[0049] The prepared wood 4 is processed into a rectangular shape of required size, and placed in a drying oven for 1-2 hours at 50-60° C. to dry.

[0050]Wipe with absolute ethanol on the desired processing position of wood 4 to ensure cleanliness.

[0051] The processed wood 4 is put into the vacuum chamber 2, the vacuum pump 6 and the vacuum valve 5 are opened, and the vacuum degree in the vacuum chamber 2 is controlled by the reading of the vacuum gauge 3 connected to the vacuum chamber 2. When the reading of the vacuum gauge 3 is controlled to 100-200pa, the vacuum valve 5 and the vacuum pump 6 are closed.

[0052] Use the fiber laser 1, turn on the laser, control the change of the Z axis in the five-axis motion laser processing platform, so that the surface of the wood 4 to be processed in the vacuum chamber 2 is located at a distance of 4 mm from the Z axis of the laser focus, and use software to co...

Embodiment 1

[0058] The prepared pine wood is processed into a rectangular shape of the required size, and placed in a drying oven for 1.5 hours at 55°C to dry.

[0059] Wipe with absolute ethanol on the desired processing position of the pine wood to ensure cleanliness.

[0060] The processed pine wood is put into the vacuum chamber 2, the vacuum pump 6 and the vacuum valve 5 are opened, and the vacuum degree in the vacuum chamber 2 is controlled by the reading of the vacuum gauge 3 connected with the vacuum chamber 2. When the reading of the vacuum gauge 3 is controlled to 150pa, the vacuum valve 5 and the vacuum pump 6 are closed.

[0061] Use fiber laser 1, turn on the laser, use a laser with a wavelength of 1070nm and 10KHz pulses, set the laser power to 9.5w, the scanning speed to 95mm / s, and the number of markings to 11 times to control the Z-axis change in the five-axis motion laser processing platform. The surface of the pine wood to be processed in the vacuum chamber 2 is locate...

Embodiment 2

[0065] The prepared pine wood is processed into a rectangular shape of required size, and placed in a drying oven for 2 hours to dry at 60°C.

[0066] Wipe with absolute ethanol on the desired processing position of the pine wood to ensure cleanliness.

[0067] The processed pine wood is put into the vacuum chamber 2, the vacuum pump 6 and the vacuum valve 5 are opened, and the vacuum degree in the vacuum chamber 2 is controlled by the reading of the vacuum gauge 3 connected with the vacuum chamber 2. When the reading of the vacuum gauge 3 is controlled to 200pa, the vacuum valve 5 and the vacuum pump 6 are closed.

[0068] Use fiber laser 1, turn on the laser, use a laser with a wavelength of 1070nm and 10KHz pulses, set the laser power to 10.5w, the scanning speed to 105mm / s, and the number of markings to 13 times to control the Z-axis change in the five-axis motion laser processing platform. The surface of the pine wood to be processed in the vacuum chamber 2 is located at...

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Abstract

The invention discloses a sensor preparation method, a strain grid preparation device and a sensor. The sensor comprises a base body, an analog-to-digital converter, electrodes and a strain grid, wherein the base body is made of wood, the analog-to-digital converter, the electrodes and the strain grid are arranged on the surface of the wood, the input end of the analog-to-digital converter is connected with the two electrodes, the strain grid is located between the two electrodes, the two ends of the strain grid are connected with the two electrodes respectively, and the strain grid is made of a three-dimensional porous carbon material. The preparation process comprises the steps that wood is placed in a vacuum environment, and the strain grid is marked and generated on the surface of the wood through a laser induction method; the analog-to-digital converter is installed on the wood; and two electrodes and wires connected with the electrodes are laid on the wood through conductive materials, the two electrodes are connected with the two ends of the strain grid respectively, and the wires are connected with the analog-to-digital converter. The sensor can be degraded, so that environmental protection is facilitated.

Description

technical field [0001] The invention belongs to the field of sensors, and relates to a method for preparing a sensor, a device for preparing a strain grid and a sensor. Background technique [0002] Traditional sensors are mostly made of metals and semiconductors. For example, pressure sensors, piezoresistive pressure sensors mainly use constantan as the sensitive material, semiconductor pressure sensors use silicon wafers as the substrate, and temperature sensors such as bimetallic sensor and thermocouple sensor require metal as the sensitive device. While meeting the requirements for use, discarded sensors have brought huge environmental pollution because they are difficult to degrade. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a method for preparing a sensor, a device for preparing a strain grid, and a sensor. The sensor can be degraded, which is beneficial to the...

Claims

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Application Information

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IPC IPC(8): G01K7/16G01L1/22
CPCG01K7/16G01L1/2256G01L1/2262
Inventor 李晨杨研伟夏田
Owner SHAANXI UNIV OF SCI & TECH
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