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Graphene temperature strain sensor

A temperature-strain, graphene technology, applied in thermometers, instruments, thermometers with electrical/magnetic components that are directly sensitive to heat, etc., can solve the problems of inability to accurately measure temperature and strain, and large external influences

Pending Publication Date: 2020-06-05
北京石墨烯技术研究院有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a graphene temperature strain sensor for the problem that both thermocouples and resistance strain gauges in the prior art are greatly affected by the outside world, and the temperature and strain of the object to be detected cannot be accurately measured at the same time.

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Embodiment Construction

[0065] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0066] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" an...

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Abstract

The application relates to a Graphene temperature strain sensor; the first strain resistance grids and second strain resistance grids in the graphene sensor are the same in shape and are alternately and symmetrically arranged, and the ratio of the resistance temperature coefficients of the first strain resistance grids and the second strain resistance grids is not equal to the ratio of the resistance strain coefficients of the first strain resistance grids and the second strain resistance grids. Real-time voltage of the first strain resistance grid and the second strain resistance grid is output to the detection circuit through a signal output circuit composed of four electrodes. The detection circuit can detect a first voltage across the two ends of the first strain resistance grid and asecond voltage across the two ends of the second strain resistance grid, calculate a first real-time resistance and a second real-time resistance according to the first voltage and the second voltage,and finally calculate the temperature and strain of the object to be detected according to the first real-time resistance and the second real-time resistance. Therefore, the graphene temperature strain sensor provided by the invention can realize accurate measurement of temperature and strain on the premise of not needing any temperature or strain compensation element, and can realize effective simplification of a circuit.

Description

technical field [0001] The present application relates to the technical field of temperature and strain detection, in particular to a graphene temperature and strain sensor. Background technique [0002] In the prior art, a thermocouple is usually used to detect the temperature of the object to be detected, and a resistance strain gauge is used to detect the strain of the object to be detected. [0003] However, the temperature measured by using a thermocouple may be affected by the strain of the thermocouple to produce a large error, while the strain measured by the resistance strain gauge is also affected by the ambient temperature. Therefore, both the thermocouple and the resistance strain gauge in the prior art are greatly affected by the outside world, and cannot accurately measure the temperature and strain of the object to be detected at the same time. Contents of the invention [0004] Based on this, it is necessary to provide a graphene temperature and strain sen...

Claims

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Application Information

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IPC IPC(8): G01B7/16G01K7/16
CPCG01B7/18G01K7/16
Inventor 李学瑞李文博李炯利王旭东张宝勋于公奇
Owner 北京石墨烯技术研究院有限公司
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