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Thermopile sensor

A thermopile sensor, pyroelectric technology, applied in the direction of electric radiation detectors, etc., can solve the problems of high precision and high sensitivity, and achieve the effect of simple structure and high precision real-time temperature measurement

Inactive Publication Date: 2014-10-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing temperature measuring devices cannot meet the requirements of high precision and high sensitivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The thermocouple of the present invention has many connection modes. like image 3 As shown, it is an annular emitting thermopile sensor composed of 8 thermocouples in the present invention. Adjacent thermocouples on the substrate e are directly connected in series to form a ring. Specifically, thermocouple 1 with its second thermal electrode as the lead-out electrode h counts the thermocouples clockwise, that is, the first thermal electrode of thermocouple 1 and the second thermal electrode of thermocouple 2 are connected in series, and the thermocouple The first thermal electrode of 2 and the second thermal electrode of thermocouple 3 are connected in series. In this way, all the thermocouples are connected in series, and the second thermal electrode of the first thermocouple and the first thermal electrode of the last thermocouple are connected in series. Lead out as the lead-out electrodes h and f for external connection of secondary measuring instruments. In add...

Embodiment 2

[0025] like Figure 4 Shown is the linear thermopile sensor that is made up of 8 thermocouples in the present invention. Adjacent thermocouples on the substrate e are directly connected in series to form a line. Adjacent thermocouples are arranged in series in a linear arrangement, which greatly improves the sensitivity. Specifically, counting the thermocouples sequentially from left to right, the first thermal electrode of thermocouple 1 and the second thermal electrode of thermocouple 2 are connected in series, and the first thermal electrode of thermocouple 2 and the second thermal electrode of thermocouple 3 The two thermal electrodes are connected in series. In this way, all the thermocouples are connected in series. The second thermal electrode of the first thermocouple and the first thermal electrode of the last thermocouple are taken out as the lead-out electrodes f and h, so as to connect the secondary gauge.

Embodiment 3

[0027] like Figure 5 As shown, it is an annular emitting thermopile sensor formed by grouping and connecting 8 thermocouples in the present invention in series. This example is different from Example 1 in that all thermocouples are divided into two groups, the first group of thermocouples and the second group of thermocouples are distributed at intervals, and different thermal electrodes of adjacent thermocouples in the same group are connected in series To be specific, if thermocouple 1 with its second thermal electrode as the lead-out electrode h counts the thermocouples clockwise, then thermocouple 1, thermocouple 3, thermocouple 5 and thermocouple 7 are the first group, Thermocouple 2, thermocouple 4, thermocouple 6 and thermocouple 8 are the second group, the first thermal electrode of thermocouple 1 and the second thermal electrode of thermocouple 3 are connected in series, the first thermal electrode of thermocouple 3 and the thermocouple The second thermal electrode ...

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Abstract

The invention relates to the field of non-contact temperature measurement, in particular to a temperature sensor based on infrared induction, and discloses a thermopile sensor. The thermopile sensor comprises at least two thermocouples. Each thermocouple comprises a first thermode and a second thermode, wherein the second thermode is arranged on the upper surface of the first thermode, and the other part, except a working end, of the first thermode and the other part, except a working end, of the second thermode are insulated. All the thermocouples are connected in series, or in a grouping series mode or in a serial-parallel mode. The thermopile sensor is simple in structure, the thermocouples based on the thermoelectric effect are connected in series, or in the grouping series mode or in the serial-parallel mode to form a thermopile, the thermoelectromotive force of the thermocouples increases along with temperature rise of the working ends, and the temperature of an object to be measured can be measured with high sensitivity and high accuracy in real time.

Description

technical field [0001] The invention relates to the field of non-contact temperature measurement, in particular to a temperature sensor based on infrared induction, especially a thermopile sensor. Background technique [0002] In nature, objects with a temperature higher than absolute zero will continuously radiate electromagnetic waves to the surroundings, including infrared rays with a wavelength range of 0.75-100 μm. The infrared temperature measuring device is based on the detection of infrared rays. The thermopile is an infrared temperature sensor, which is the core component of the thermal conductivity meter. The thermopile structure is composed of several identical thermocouples connected in series. The basic principle of thermocouple temperature measurement is that two conductors or semiconductors with different components (called thermocouple wire or thermode) are connected into a loop at both ends. When there is a temperature gradient at both ends, there will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/12G01J5/14
Inventor 乔明薛腾飞齐钊文帅张波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA