Needle-like coaxial thin-film thermocouple for measuring transient temperature

A transient temperature and thermocouple technology, applied in the field of sensors and temperature sensors, can solve the problems of being easily disturbed by environmental factors, slow response speed, and low measurement accuracy

Active Publication Date: 2013-08-14
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods of measuring bearing temperature are susceptible to interference from environmental factors, such as sunlight, ambient temperature, etc., and have low measurement accuracy and s

Method used

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  • Needle-like coaxial thin-film thermocouple for measuring transient temperature
  • Needle-like coaxial thin-film thermocouple for measuring transient temperature
  • Needle-like coaxial thin-film thermocouple for measuring transient temperature

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Such as figure 1 and figure 2 As shown: a needle-shaped coaxial thin-film thermocouple for measuring transient temperature; a thermocouple coaxial structure composed of a needle-shaped measuring end, a thermal electrode and an insulating layer; the measuring end 10 includes a thermal electrode-1 and Thin-film coating 8, thin-film coating 8 is on the acicular top surface of thermocouple coaxial structure; Described hot electrode one 1 is covered with insulating layer 2, and insulating layer 2 and hot electrode two 3 are bonded with colloid 4 (such as image 3 As shown), the thin film coating 8 is connected with the wire-shaped thermal electrode 1 to form a thermocouple thermal junction, and the thermocouple thermal junction is the measuring terminal 10; the lead wire 1 is connected to the thermal electrode 1, and the lead wire 6 is connected to the thermal elec...

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Abstract

The invention discloses a needle-like coaxial thin-film thermocouple for measuring a transient temperature, and belongs to the technical field of sensors. The needle-like coaxial thin-film thermocouple comprises a thermocouple coaxial structure comprising a needle-like measuring end, thermal electrodes and an insulating layer, wherein the measuring end comprises a thermal electrode I and a thin-film coating, and the thin-film coating is arranged on the needle-like top surface of the thermocouple coaxial structure; the thermal electrode I is covered with the insulating layer; the insulating layer and a thermal electrode II are adhered with glue; the thin-film coating and the wire-shaped thermal electrode are connected to form a thermocouple thermal connection point which is the measuring end; a lead I is connected with the thermal electrode I, and a lead II is connected with the thermal electrode II; and the measuring end converts measured temperature signals into electrical signals and transmits the electrical signals to a cold junction compensation and signal conditioning module and a computer testing system through wires.

Description

technical field [0001] The invention relates to a needle-shaped coaxial thin-film thermocouple for measuring transient temperature, belongs to the technical field of sensors, in particular to the technical field of temperature sensors. Background technique [0002] Temperature is one of the seven international standard units. The establishment of the concept of temperature and the measurement of temperature are based on the phenomenon of thermal equilibrium. Two objects in thermal equilibrium have the same temperature. How to reduce the thermal inertia of the temperature measurement sensor and enhance the ability of accurate and rapid temperature measurement is a research hotspot in the field of modern temperature measurement. Thin-film thermocouple is an advanced sensor for measuring transient temperature changes in modern times. It is widely used in the temperature measurement of the inner wall of the gun bore, the top surface of the piston of the internal combustion engin...

Claims

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Application Information

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IPC IPC(8): G01K7/02
Inventor 崔云先邢磊赵家慧郭立明安阳
Owner DALIAN JIAOTONG UNIVERSITY
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