A self-powered sensor for alcohol detection and its preparation method

An alcohol detection and sensor technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of requiring an external force source, weak output signal, low sensitivity, etc., and achieve the effects of low cost, high compatibility and convenient production.

Inactive Publication Date: 2018-08-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Based on the above, the present invention provides a self-powered sensor for alcohol detection and its preparation method. The present invention does not need to configure other power sources, can be used for drunk driving detection, and can solve the problem of sensitive sensors based on piezoelectric effect self-powered gas sensors. It can be effectively used in wireless sensor networks for gas detection due to problems such as low accuracy, weak output signal, and the need for external force sources.

Method used

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  • A self-powered sensor for alcohol detection and its preparation method
  • A self-powered sensor for alcohol detection and its preparation method
  • A self-powered sensor for alcohol detection and its preparation method

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Embodiment Construction

[0034] Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in detail:

[0035] figure 1 The schematic diagram of the preparation process of the self-powered sensor provided by the present invention, the preparation method of the present invention specifically includes the following steps:

[0036]Step A: preparation of the first part; depositing a copper film with a thickness of 30 to 70 microns on the bottom surface of the cleaned and dried glass substrate 1 (as shown in (a)) as the lower conductive electrode 21 (as shown in (b)), And prepare interdigital electrodes 3 on the top surface of the glass substrate 1 (as shown in figure (c)), the material of the interdigital electrodes 3 is Al or Au, and the specific parameters of the interdigital electrodes 3 are as follows: Width: 25 μm~50 μm , Pitch: 25μm~50μm, Length: 800μm~4500μm, Thickness: 100nm~200nm( Figure 4 It is a structural schematic diagram of the interdigital ...

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Abstract

The invention discloses a self-powered sensor for alcohol detection and a preparation method thereof, belonging to the field of self-powered active gas sensors. The self-powered sensor provided by the invention includes a glass substrate, interdigital electrodes, a gas-sensitive thin film layer, an insulating polymer thin film layer, a conductive electrode and an insulating support structure. The self-powered sensor can collect the mechanical energy of the exhaled airflow of the human body to provide energy for itself, and realize the determination of the alcohol concentration in the breathed gas through the current or voltage output by the detection circuit; compared with the traditional alcohol sensor, the present invention has simple preparation process, The cost is low, the practicability is high, and no additional power supply system is required. Moreover, the self-powered sensor proposed by the invention has a novel structure and fully utilizes the energy of nature, and can be widely used in the detection of drunk driving.

Description

technical field [0001] The invention belongs to the field of self-powered active gas sensors, and in particular relates to a self-powered sensor for alcohol detection and a preparation method thereof. Background technique [0002] A gas sensor is a converter that converts the volume fraction of the gas to be measured into a corresponding electrical signal. Using a gas sensor to analyze gas is an important link in scientific research, production process and environmental testing. Traditional gas sensors usually rely on changes in capacitance or resistance and require an external power source to provide energy, which cannot meet the long-term needs of such sensors. Its gas sensor components mainly include two types: gas sensor resistor and gas sensor capacitor. However, measuring resistance or capacitance generally requires a circuit system, which makes the gas sensor require many auxiliary devices, and the overall structure is complex and energy consumption is high. Especial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12H02N1/04
CPCG01N27/125H02N1/04
Inventor 苏元捷谢法彪朱国涛马行方谢光忠太惠玲杜晓松杜鸿飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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