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A Heat Flow Sensor Based on Thermopile Principle

A heat flow sensor and thermopile technology, applied in the field of sensor measurement, can solve the problems of low sensor sensitivity and response speed, and achieve the effects of facilitating mass production, improving sensitivity and fast response speed

Active Publication Date: 2021-04-13
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accuracy of surface heat flux measurement is greatly affected by the material and shape of the heat flux sensor. At the same time, the existing heat flux sensor generally only has one thermocouple, and the sensitivity and response speed of the sensor are not high.

Method used

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  • A Heat Flow Sensor Based on Thermopile Principle
  • A Heat Flow Sensor Based on Thermopile Principle
  • A Heat Flow Sensor Based on Thermopile Principle

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Embodiment Construction

[0030] The present invention proposes a heat flow sensor based on the principle of thermopile, which selects the material of the measured part and conformal design, can greatly reduce the measurement error, and at the same time, the sensor has fast response speed and high sensitivity.

[0031] Such as figure 1 As shown, the heat flow sensor of the present invention has a cylindrical structure, and its cylindrical base 1 is processed by the material to be measured. There are several grooves 2, and the grooves are filled with special materials, and the shape of the measuring surface after filling is consistent with that before the grooves are opened. The depth of the groove 2 is directly proportional to the sensitivity of the heat flow sensor.

[0032] The difference in thermal conductivity between the special material and the material of the cylindrical base 1 is more than 10 times. If the thermal conductivity of the material of the cylindrical base 1 is low, the material wit...

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Abstract

The invention discloses a heat flow sensor based on the thermopile principle, which is used for measuring surface heat flow. The heat flow sensor has a cylindrical structure. The cylindrical substrate is processed by the material to be measured. One end surface of the cylindrical substrate is used as the measuring surface. The measuring surface is conformally designed with the surface shape of the measured material. For special materials, the shape of the measuring surface after filling is the same as that before opening the groove; the surface of the measuring surface is covered with sensitive elements, and the cold node of the sensitive element is attached to the surface of the material with high thermal conductivity in both the cylindrical base material and the special material. The node is attached to the surface of the material with low thermal conductivity, and the two ends of the sensitive element are connected to the output line, and the output line is drawn out through the outlet hole on the cylindrical base. The invention can minimize the thermal interference caused by the heat flow sensor, improve the accuracy of measurement, and at the same time, the sensitivity and response speed of the heat flow sensor are obviously improved.

Description

technical field [0001] The invention relates to a heat flow sensor based on the thermopile principle, which belongs to the field of sensor measurement. Background technique [0002] The measurement of surface heat flux has attracted more and more attention. At present, heat flux sensors are generally used to measure surface heat flux. The accuracy of surface heat flux measurement is greatly affected by the material and shape of the heat flux sensor. At the same time, the existing heat flux sensor generally only has one thermocouple, and the sensitivity and response speed of the sensor are not high. Contents of the invention [0003] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a heat flow sensor based on the thermopile principle, which improves the sensitivity and response speed, and can minimize the measurement error. [0004] The technical solution of the present invention is: a heat flow sensor based on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K17/08
CPCG01K17/08
Inventor 李俊方静冯红亮刘鹏
Owner BEIJING RES INST OF TELEMETRY
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