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Self-powered sensor for detecting alcohol and preparation method of self-powered sensor

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

Inactive Publication Date: 2016-11-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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  • Claims
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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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  • Self-powered sensor for detecting alcohol and preparation method of self-powered sensor

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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 detecting alcohol and a preparation method of the self-powered sensor, belonging to the field of a self-powered initiative-type gas sensor. The self-powered sensor comprises a glass substrate, an interdigital electrode, a gas-sensitive film layer, an insulating polymer film layer, a conducting electrode and an insulating supporting structure. The self-powered sensor can collect mechanical energy of the expiratory airflow of the human body so as to provide the energy, and the alcohol concentration in the breathed air can be determined by virtue of current or voltage outputted by a detection circuit. Compared with the traditional alcohol sensor, the self-powered sensor is simple in preparation process, low in cost, high in practicability, and free from needing an additional power supply system. The self-powered sensor is novel in structure, capable of sufficiently utilizing the natural energy and capable of being widely used for detecting the 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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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 ELECTRONIC SCI & TECH OF CHINA
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