Self-power respiration sensor based on bionic nasal cavity structure, and preparation method thereof

A breathing sensor and nasal structure technology, applied in the sensor field, can solve the problem that the formation mechanism has not been fully studied, and achieve the effects of enhancing the output electrical signal, novel and simple design, and simple material

Active Publication Date: 2018-11-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

Although the common phenomenon of friction electrification has been recognized by huma

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  • Self-power respiration sensor based on bionic nasal cavity structure, and preparation method thereof
  • Self-power respiration sensor based on bionic nasal cavity structure, and preparation method thereof
  • Self-power respiration sensor based on bionic nasal cavity structure, and preparation method thereof

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Embodiment Construction

[0038] Below in conjunction with specific embodiment and description accompanying drawing and the present invention is clearly and completely described, with the hope that those skilled in the art can understand the working principle and the realized function of the present invention:

[0039] figure 1 It is a specific implementation of the self-powered gas sensor provided by the present invention, and its overall structure simulation diagram is as follows figure 1 as shown in (b), figure 1 (a) for figure 1 (b) Simulation diagram of cross-section obtained along the radial direction. The self-powered gas sensor includes an insulating cylinder 1 provided with a respiratory airflow, and the insulating cylinder 1 needs to have a certain hardness as a test chamber; the inner wall surface of the insulating cylinder 1 is provided with a metal film 2 as an electrode layer; The film 2 is provided with a power generation array uniformly distributed along the inner circumference of th...

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Abstract

The invention relates to a self-power respiration sensor based on a bionic nasal cavity structure, and a preparation method thereof, and belongs to the technical field of sensors. An electrode layer covers on the inner wall surface of an insulating cylinder; friction electrification units arranged along the inner normal direction of the inner wall surface of the insulating cylinder in a way of being similar to nasal hair are arranged on the electrode layer and are arranged in order so as to form an electricity generation array; each friction electrification unit comprises a flexible friction layer, a conducting layer and a sensitive thin film layer; under the drive of an respiratory flow, the adjacent friction electrification units form contact-separation circulation, so that an inductivecharge is produced, and an electric signal is output to an external detection circuit through the electrode layer. Compared with a traditional sensor, according to the self-power respiration sensor based on the bionic nasal cavity structure provided by the invention, the miniaturization of the device is ensured, and meanwhile, the output electric signal is remarkably improved through increasing the friction contact area, so that the detection accuracy is favorably improved; the device is novel and simple in structure design, low in cost, portable, easy to carry, simple and easy to get materials, and convenient to process; the sensor provided by the invention does not require a special environment, and is high in compatibility and free of being limited in application occasions.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a self-powered breathing sensor based on a bionic nasal cavity structure and a preparation method thereof. Background technique [0002] Existing studies have shown that the types and contents of substances in human breath are related to people's physical conditions, and thus a new disease diagnosis method - respiratory diagnosis has been developed, which reflects the changes in the composition of the breath exhaled by the person and reflects the corresponding tissue changes. Changes in cell metabolism, which in turn characterize the health status of the human body. Compared with traditional diagnostic methods, respiratory diagnosis has gradually attracted the attention of more and more researchers and has achieved rapid development due to its advantages of being faster and more convenient. The clinical diagnosis of asthma regards the content of nitrogen oxides in ex...

Claims

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Application Information

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IPC IPC(8): G01N27/02H02N1/04
CPCG01N27/02H02N1/04
Inventor 谢光忠李双定苏元捷杨铂汐潘虹张秋平黎威志太惠玲杜晓松蒋亚东
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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