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Graphene pressure sensor array system and preparation method thereof

A pressure sensor and graphene technology, applied in the measurement of the property and force of piezoelectric resistance materials, etc., can solve the problems of unfavorable wide application, complex process, graphene pressure sensor cannot be used for monitoring, etc.

Inactive Publication Date: 2017-02-22
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese invention patent with the publication number CN201210013024 applied for a graphene-based array flexible pressure distribution sensor and its preparation method, using graphene film to realize array pressure sensing, but the strain range of single-layer or multi-layer graphene is small ( <4.5%), resulting in the graphene pressure sensor cannot be applied to the monitoring of a large pressure range, and the process is complex, the reliability of the device is poor, which is not conducive to wide application

Method used

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  • Graphene pressure sensor array system and preparation method thereof
  • Graphene pressure sensor array system and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0039] Embodiment 1 provides a kind of method for preparing graphene pressure sensor array system, and its array is 4 * 4, comprises the following steps:

[0040] Step 1. Engraving several grooves on the array circuit board; engrave a 4×4 groove area array of 0.5mm×0.5mm in size on the upper layer of the rigid circuit board by laser cutting, with an interval of 0.5mm.

[0041] Step 2. Arrange the array circuit on the array circuit board with grooves carved; make the array circuit on the rigid circuit board, the line width is 0.1mm, and correspond to the hollowed out area; the array circuit includes warp (vertical circuit) and weft (horizontal circuit) ), the circuit formed is used to connect the electrodes at both ends of each sensor unit, and controls the gating of the unit device through an analog switch.

[0042] Step 3. Make a force-sensitive film composed of a graphene layer and a polymer layer. The steps are as Figure 4 Shown, have the following steps again.

[0043]...

Embodiment 2

[0050] Embodiment 2 provides a kind of method for preparing graphene pressure sensor array system, and its array is 9 * 8, comprises the following steps:

[0051] Step 1. Carve a number of grooves on the array circuit board; engrave a 9×8 groove area array of 3.2mm×3.2mm in size on the upper layer of the flexible circuit board by laser cutting, with an interval of 0.8mm.

[0052] Step 2. Arrange the array circuit on the array circuit board with grooves engraved; make the array circuit on the rigid circuit board, the line width is 0.1mm, and correspond to the hollowed out area; the array circuit includes warp (vertical circuit) and weft (horizontal circuit) circuit), the circuit formed is used to connect the two ends of each sensor unit, and controls the gating of the unit device through an analog switch.

[0053] Step 3. make the force-sensitive film that graphene layer and polymer layer are compounded; This step is as follows Figure 5 Shown, have the following steps again. ...

Embodiment 3

[0061] Embodiment 3 provides a kind of method for preparing graphene pressure sensor array system, and its array is 100 * 100, comprises the following steps:

[0062] Step 1. Carve a number of grooves on the array circuit board; engrave an array of 100×100 groove areas with a size of 18mm×18mm on the upper layer of the flexible circuit board by laser cutting, with an interval of 2mm.

[0063] Step 2. Arrange the array circuit on the array circuit board with grooves engraved; make the array circuit on the rigid circuit board, the line width is 0.1mm, and correspond to the hollowed out area; the array circuit includes warp (vertical circuit) and weft (horizontal circuit) circuit), the circuit formed is used to connect the two ends of each sensor unit, and controls the gating of the unit device through an analog switch.

[0064] Step 3. make the force-sensitive film that graphene powder and polymer are compounded; This step is as follows Figure 5 Shown, have the following steps...

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Abstract

The invention discloses a graphene pressure sensor array system and a preparation method thereof. The sensor array comprises an array circuit board and an array circuit which is arranged on the array circuit board. The array circuit board is provided with a plurality of graphene pressure sensing units which are connected with the array circuit. The graphene pressure sensing unit converts an acquired signal to a pressure value by means of a signal acquiring and processing system. Each graphene pressure sensing unit comprises a graphene layer, a force-sensitive film which is obtained through combining elastic polymer layers, and electrodes at two ends of the force-sensitive film. Through adding one layer of elastic polymer, the strain limit of the graphene layer is increased, thereby extending a measuring range which can be detected by the sensor.

Description

technical field [0001] The invention relates to a graphene pressure sensor array system. Background technique [0002] Wearable devices, electronic skin, and smart sensing are actively changing the way people perceive, think, and behave. Google Glass, iWatch, Electronic Tattoo, etc. provide people with a three-dimensional visual experience, expand the rich information dimension, and mine the health big data of the system. Wearable devices, electronic skin and other sensor devices that can perceive external pressure, temperature, airflow and tactile signals like human skin. Due to its excellent characteristics, electronic skin is widely used in health monitoring, human-machine identification and so on. It can make robots feel tactile, and can cover the surface like clothes, allowing robots to perceive the orientation, shape, hardness and other information of objects. Nevertheless, people's constant pursuit of high-quality life, multi-resource acquisition, and new sensory ex...

Claims

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Application Information

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IPC IPC(8): G01L1/18
CPCG01L1/18
Inventor 杨俊魏大鹏史浩飞胡云孙泰罗伟杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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