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A self-calibrating thin-film thermocouple array with negative electrode sharing feature

A thermocouple and self-calibration technology, applied in the direction of using electric devices, thermometers using electric/magnetic elements that are directly sensitive to heat, using electromagnetic means, etc., can solve problems such as temperature calculation errors and difficult radius values, and achieve reduction Lead distribution, improve the effect of complex wiring

Active Publication Date: 2021-04-30
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is based on the premise of two platinum resistors distributed in concentric circles, and it is difficult to calculate the radius of the hot junction temperature at the center of the circle, and it is easy to introduce temperature calculation errors

Method used

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  • A self-calibrating thin-film thermocouple array with negative electrode sharing feature
  • A self-calibrating thin-film thermocouple array with negative electrode sharing feature
  • A self-calibrating thin-film thermocouple array with negative electrode sharing feature

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0024] like figure 1 As shown, in the present invention, the self-calibrating thin-film thermocouple array is made up of 8 groups of gold-platinum thermocouple groups shared by platinum poles, and these thermocouple groups 1-2 are connected by gold wires 1-11, wherein each group of thermocouple components is 3 thin film thermocouples. Composed of gold and platinum hot junctions (1-8, 1-9, 1-10), platinum poles 1-3, gold poles (1-4, 1-5, 1-6) and their corresponding pins 1-7 Thin-film platinum resistors R1 and R2 (1-12 and 1-13) linearly distributed along the radial direction of the sensor jointly form a group of thin-film thermocouple arrays on the insulating ceramic substrate 1-1. The base diameter of the self-calibrating thin-film thermocouple array is 22 mm, the thickness is 0.38 mm, the base is made of alumina ceramic material, and the thermal conductivity is 36...

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Abstract

The invention relates to a self-calibrating thin-film thermocouple array with the feature of sharing negative poles. The thermocouple array is a thin-film sensor for realizing multi-point temperature measurement and belongs to the field of surface temperature measurement. The present invention adopts screen printing processing technology to print 8 sets of connected gold-platinum film thermocouple arrays on the surface of an insulating substrate with a diameter of 22mm. The thin-film thermocouples shared by the platinum poles have corresponding thermal junctions distributed on the platinum poles at equal intervals. The static characteristic calibration of the thin film thermocouple array is based on the temperature extrapolation method. Adopting this invention can simultaneously measure temperature changes at multiple points in the area and provide more accurate temperature distribution; at the same time, the feature of sharing negative poles can effectively reduce the number of lead wires.

Description

technical field [0001] The invention belongs to the field of surface temperature measurement and relates to a self-calibration film thermocouple array for realizing multi-point temperature measurement. Background technique [0002] In the field of surface temperature measurement, with the continuous change of temperature measurement occasions, the demand for temperature measurement continues to increase. Due to the small size, fast response speed and the characteristics of multi-point temperature measurement at the same time, the thin-film thermocouple array is in the field of surface precision and rapid temperature measurement. measurement has unique advantages. In order to achieve accurate temperature measurement at multiple points in a small area, it is necessary to design a small-sized thin-film thermocouple array with multi-point temperature measurement function. In addition, each thermocouple in the existing thin film thermocouple array adopts a separate lead wire, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00G01K7/02
Inventor 丁炯王佳音杨遂军叶树亮
Owner CHINA JILIANG UNIV
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