Friction electric sensing coupled mine shaft harmful gas passive detection apparatus

A harmful gas and passive detection technology, which is applied in the field of gas sensing, can solve problems such as inconvenience, safety, and hidden dangers, and achieve the effects of easy installation, energy and cost savings, and avoiding cable laying

Inactive Publication Date: 2018-09-18
蔡青青 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The monitoring system currently used in mines is a distributed installation. Each detection module needs cable power supply and signal transmission, whic

Method used

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  • Friction electric sensing coupled mine shaft harmful gas passive detection apparatus
  • Friction electric sensing coupled mine shaft harmful gas passive detection apparatus
  • Friction electric sensing coupled mine shaft harmful gas passive detection apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The material of the fixed plate is copper; the material of the vibrating film is polytetrafluoroethylene, and the thickness is 50 μm; the surface of the negative friction layer is nano-treated, and the treatment method is manual sanding; the conductive polymer can be polyaniline eigenstate; the shell adopts 3D printing technology or stamping injection molding technology.

[0038] Figure 5 It is the working comparison diagram of the triboelectric sensor coupling type mine harmful gas passive detection device in the air flow and the harmful gas flow in the embodiment 1, as shown in the figure, the polyaniline film is a kind of high conductivity polyaniline, in which The polymer chain is doped with protonic acid, and when the harmful gas comes into contact with polyaniline, the -H bond or -OH bond in it will react with the N atom in the polyaniline chain to prevent the rearrangement of molecular conformation and prevent Charge transport and electron migration in the mole...

Embodiment 2

[0041] The material of the fixed plate is iron; the material of the vibrating film is polyethylene, and the thickness is 50 μm; the surface of the negative friction layer is nano-treated, and the treatment method is inductively coupled plasma etching; the conductive polymer can be polypyrrole, and the chemical state is oxidation state; the shell is made by 3D printing technology or stamping and injection molding technology.

Embodiment 3

[0043] The material of the fixed plate is nickel; the material of the vibrating film is polyvinyl chloride, the thickness is 50 μm; the surface of the negative friction layer is nano-treated, and the treatment method is manual sandpaper polishing; the conductive polymer can be polyacetylene, and the chemical state is the intrinsic state ;The shell is made by 3D printing technology or stamping injection molding technology.

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Abstract

The invention relates to the field of gas sensing, particularly to a friction electric sensing coupled mine shaft harmful gas passive detection apparatus, which comprises a sensing component and a displaying component, wherein the sensing component comprises a shell, a negative friction layer and a positive friction layer, and the displaying component comprises a rectification bridge, a voltage dividing resistor and six LEDs. According to the present invention, the self-powered mine shaft harmful gas sensor is constructed by using the electric-conduction polymer material as the friction and sensing material, such that the gas sensing is achieved at the room temperature, the power supply for the sensor by the power source, the electric cable and the like is not required, and the power supply problem of the sensor is solved; and the friction power generation process and the gas sensing process are combined in the same process, such that the two processes of the conversion of the wind energy into the electric energy and the sensing are achieved in one step.

Description

technical field [0001] The invention relates to the field of gas sensing, in particular to a triboelectric sensing coupling type mine harmful gas passive detection device. Background technique [0002] my country is a country with a lot of resources, and resource exploitation is very critical to the economic development of our country. In recent years, the increasingly frequent gas explosions and other major mine accidents have attracted the attention of various mines and state management departments. Frequent mine safety accidents are mainly due to the steep terrain of the mine, insufficient underground power supply, resulting in the shutdown of the detection device, and the uncertainty of the underground gas composition. Once the flammable and explosive gas is produced underground and the friction electric spark happens to occur without knowing it, it will cause danger and lead to tragedy. [0003] Mine harmful gas monitoring system is an important link in the constructi...

Claims

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Application Information

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IPC IPC(8): G01N27/00H02N1/04
CPCG01N27/00H02N1/04
Inventor 蔡青青高邦益姜琪悦
Owner 蔡青青
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