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A self-generating pressure sensor based on electrochemical principles and its preparation method

A pressure sensor, electrochemical technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve problems such as performance degradation, and achieve the effect of reducing power consumption, high sensitivity, and fast response speed

Active Publication Date: 2020-05-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of sensor is susceptible to performance degradation due to environmental factors (such as moisture, air pressure, etc.) during actual work.

Method used

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  • A self-generating pressure sensor based on electrochemical principles and its preparation method
  • A self-generating pressure sensor based on electrochemical principles and its preparation method
  • A self-generating pressure sensor based on electrochemical principles and its preparation method

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Embodiment 1

[0037] See figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 The first embodiment of the present invention provides a self-generating pressure sensor based on electrochemical principles. The pressure sensor includes a sensing structure, a reference electrode, a current detection component, and a processing display component. The current detection component is connected to the sensing structure and the reference electrode to form a circuit. When the sensing structure is placed in the electrolyte to monitor the pressure, the electrochemically available area of ​​the working electrode 2 is in the dynamic pressure in the electrolyte. When the electric double layer balance charge on the surface of the working electrode 2 remains unchanged, the sensing structure generates a potential change, thereby generating electrical energy output and generating a current in the circuit. The current detection The component is used to detect the current and transmit the detected current inf...

Embodiment 2

[0063] See Image 6 , Figure 7 , Picture 8 , Picture 9 and Picture 10 , The second embodiment of the present invention provides a self-powered pressure sensor based on electrochemical principles. The structure of the pressure sensor is basically the same as the self-powered pressure sensor based on electrochemical principles provided in the first embodiment of the present invention. The differences are The pressure sensor provided in this embodiment can be applied to a fresh water environment, and its sensing structure is housed in a sealed box 8. The working electrode and the counter electrode are respectively connected to the outside through a waterproof wire 9. The sealed box 8 A through hole is opened on the side adjacent to the pressure plate, and the through hole is used for accommodating the force conducting member 7, and one end of the force conducting member 7 passes through the through hole and then abuts against the pressure plate. A sealing ring 11 is provided a...

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Abstract

The invention belongs to the technical field of pressure sensors and discloses an electrochemical principle-based self-power generating type pressure sensor and a preparation method thereof. The pressure sensor comprises a sensing structure; the working environment of the sensing structure is an electrolyte environment; the sensing structure is used for converting pressure to be measured into electric energy; and the pressure sensor obtains current pressure according to the relationship between current generated by the converted electric energy and corresponding pressure, and current at present, and therefore, the real-time monitoring of the pressure to be measured is realized; the sensing structure realizes self-power generation based on an electrochemical principle; the sensing structurecomprises an interlayer structure, a working electrode and a counter electrode; and the working electrode and the counter electrode are disposed in the interlayer structure and are respectively arranged on adjacent interlayers. The pressure sensor of the invention has the advantages of no energy consumption, high response speed and strong liquid environment applicability.

Description

Technical field [0001] The invention belongs to the technical field related to pressure sensors, and more specifically, relates to a self-generating pressure sensor based on electrochemical principles and a preparation method thereof. Background technique [0002] In the field of ocean exploration, pressure sensors, as an important monitoring tool, can assist in monitoring changes in underwater pressure and improve hydrological information in regional seas. At present, pressure sensors have been widely used in sonar detection, tide monitoring, tsunami warning, underwater navigation, and ocean exploration. Among them, pressure sensors can be divided into four categories based on sensing mechanisms: piezoresistive, capacitive, piezoelectric, and triboelectric pressure sensors. The piezoresistive pressure sensor uses the resistance change of the material under different pressures to achieve pressure detection; the capacitive pressure sensor is a pressure sensor based on the classic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L11/00G01L19/00
Inventor 徐鸣张蒙蒙邓泽明
Owner HUAZHONG UNIV OF SCI & TECH
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