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Pressure sensor based on triboelectricity

A pressure sensor and triboelectric technology, applied in the field of sensing, can solve the problems of battery damage to human health, difficult to track the number of sensors, and cumbersome problems

Active Publication Date: 2017-05-03
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the power supply of these sensor nodes can no longer be simply provided by batteries, because the number of sensors in the sensor network is huge and the location is difficult to track, which will lead to a very tedious or even impossible task to replace the batteries of individual sensors, and A large number of waste batteries will cause great harm to human health

Method used

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  • Pressure sensor based on triboelectricity
  • Pressure sensor based on triboelectricity
  • Pressure sensor based on triboelectricity

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Embodiment approach

[0024] According to one embodiment of the present invention, the protrusion array structure layer 3 may include a second electrode layer and a second friction layer, the second electrode layer is a flat structure, and the second friction layer is a protrusion array structure , and the second electrode layer is located between the second friction layer and the second supporting layer 2 , that is, the second friction layer is in contact with the first friction layer 4 .

[0025] In this case, the electric signal is output to the external circuit 20 through the first electrode layer 5 and the second electrode layer.

[0026] Wherein, both the first electrode layer 5 and the second electrode layer can be made of any conductive material, such as metal material, ITO, organic conductor and the like. For example, the metal material may be one of the following: copper, aluminum and gold, preferably copper. Both the first friction layer 4 and the second friction layer may be polymer ma...

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Abstract

The invention relates to the field of sensing, and discloses a pressure sensor based on triboelectricity. The pressure sensor comprises a generator which deforms under the action of pressure, and generates and outputs an electric signal based on the deformation; and an external circuit which is connected with the generator, and is used for detecting the electric signal outputted by the generator, and determining the size of the pressure or deformation according to the detected electric signal. According to the invention, the pressure sensor can detect the pressure without an additional power supply, and achieves the self-drive of the pressure sensor.

Description

technical field [0001] The invention relates to the field of sensing, in particular to a pressure sensor based on triboelectricity. Background technique [0002] Information technology is the main driving force for the development of modern society, and the collection and exchange of information mainly depends on various sensors with different functions. Integrating individual sensing devices to create large-scale sensor networks and systems is crucial to the realization of the Internet of Things. The drive of these huge number of micro sensor devices spread all over the world mainly depends on batteries. However, batteries face many problems such as service life, recycling, and environmental pollution. In addition, sensor nodes are often implanted and need to operate wirelessly, so it is very important to be able to work independently, sustainably, and maintenance-free. Therefore, the power supply of these sensor nodes can no longer be simply provided by batteries, becaus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16
Inventor 王中林蒋涛
Owner BEIJING INST OF NANOENERGY & NANOSYST
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