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Thermocouple and temperature sensor

A technology of temperature sensor and thermocouple, applied in thermometers, thermometers and instruments using electrical/magnetic components directly sensitive to heat, etc., can solve problems such as difficulties, improve electrical conductivity, improve temperature measurement performance, and increase contact area effect

Inactive Publication Date: 2018-02-23
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for many materials (eg, Bi 2 Te 3 , PbTe, LaS and LaTe), when σ increases, S decreases accordingly. It is very difficult to find a material that increases both σ and S at the same time. It is necessary to improve the temperature measurement performance of thermocouples in other ways

Method used

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  • Thermocouple and temperature sensor

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Embodiment Construction

[0042] In order to facilitate the understanding of the technical solutions of this application, first, a brief introduction to the concepts involved in this application is given.

[0043] figure 1 It is a schematic diagram of the Seebeck effect. A represents a metal or semiconductor, and B represents another metal or semiconductor. The two ends of A and B are connected together to form two left and right contact points. The left contact point has a high ambient temperature and is called the hot end, and the right contact point has a low ambient temperature and is called the cold end.

[0044] When both A and B are metals, since the free electron densities of A and B are different, when the two materials are in contact (for example, welding or fusion), electron diffusion will occur on the contact surface. For the same contact area, the temperature of the two materials A and B is the same, the electron diffusion speed is the same, and the final electrical properties of the contact s...

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Abstract

The present invention provides a thermocouple and a temperature sensor. The thermocouple includes an N type component and a P type component, wherein the N type component is connected with the P typecomponent through a conductive material. According to the thermocouple provided by the invention, the N type component is connected with the P type component through the conductive material; and the conductive material fills a gap of the joint of the N type component and the P type component; and therefore, a contact area between the N type component and the P type component is increased, conductivity can be improved, and as a result, tiny temperature measuring current signals can be amplified, and the temperature measuring performance of the thermocouple can be improved.

Description

Technical field [0001] This application relates to the field of thermocouples, in particular to a thermocouple and a temperature sensor. Background technique [0002] In a loop composed of two different conductors or semiconductors, if the temperature of the two contact points of the two different conductors or semiconductors is different, current will appear in the loop. This phenomenon is called Seebeck. effect. The current in the above loop is called the thermal current, and the electromotive force corresponding to the thermal current is called the thermoelectromotive force. The magnitude of the thermoelectromotive force is positively related to the temperature difference between the two contact points, that is, the temperature difference between the two contact points The larger the larger the thermoelectromotive force. [0003] A thermocouple is a device for measuring temperature. The principle of measuring temperature is to use the Seebeck effect to convert a temperature si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02G01K7/14
CPCG01K7/02G01K7/028G01K7/14
Inventor 二瓶瑞久周晓松徐焰柳和宏
Owner HUAWEI TECH CO LTD
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