Temperature sensor dynamic calibration system based on double pulse lasers

A temperature sensor and dynamic calibration technology, applied in thermometer testing/calibration, thermometers, instruments, etc., can solve the problems of high repeatability and low uncertainty, unable to meet the dynamic calibration of microsecond temperature sensors, etc., to achieve accuracy and repeatability High, scalable and compatible, low uncertainty effect

Active Publication Date: 2021-06-29
CHINA JILIANG UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the traditional dynamic temperature calibration technology is difficult to produce microsecond-level and above temperature steps with high repeatability and low uncertainty, and cannot satisfy the dynamic calibration of microsecond-level temperature sensor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature sensor dynamic calibration system based on double pulse lasers
  • Temperature sensor dynamic calibration system based on double pulse lasers
  • Temperature sensor dynamic calibration system based on double pulse lasers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Embodiment: In this embodiment, a picosecond-level digital pulse delay trigger 1 is used to generate a trigger signal A to excite the nanosecond-level pulse laser a 2 to make it emit a beam of laser light, such as figure 1 As shown, through the optical path system composed of reflector 4, laser converging polarizer 5, laser beam expander 7 and laser focusing mirror 8, the radiation is irradiated on the temperature sensor 11. At this time, the laser is used as a heat source, so that the surface of the temperature sensor 11 The temperature changes, and the output response signal A of the temperature sensor 11 can be obtained through the signal amplifier 14 and the high-precision oscilloscope b 15, such as figure 2 shown. Then the pulse delay trigger 1 generates a trigger signal B to excite the nanosecond-level pulse laser b 3 to make it emit a beam of laser light, such as image 3shown. Since the picosecond-level digital pulse delay trigger 1 is used to generate double...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a temperature sensor dynamic calibration system based on double pulse lasers. A pulse time-delay trigger triggers two single-pulse lasers in a time-sharing manner, so that two laser pulses of the two single-pulse lasers are irradiated on a temperature sensor to be calibrated through respective light path systems, the temperature sensor is externally connected with a high-time-resolution dynamic signal acquisition system which is used for acquiring corresponding signals of the temperature sensor, and calibration of the temperature sensor is completed through the interval of the peak-to-peak value of the response signal and the time interval of the trigger signal. According to the method, the thermal response dynamic characteristics of the sensor are determined through the time relative deviation between the standard double-pulse signal time interval of the pulse delay trigger and the response signal peak-to-peak value interval of the temperature sensor, and the influence of pulse quality such as monopulse laser power, transverse mode and longitudinal mode distribution and the like on the calibration result is avoided.

Description

technical field [0001] The invention relates to the technical field of dynamic temperature calibration, in particular to calibrating the dynamic response characteristics of a temperature sensor by using a double-pulse laser with a time precision above microsecond level. Background technique [0002] In the field of aerospace and metallurgy, there are a large number of high-temperature, microsecond-level transient temperature measurement requirements, such as the design and manufacture of aviation and aerospace engine blades, and the continuous casting process monitoring of special steel. At present, the microsecond-level temperature sensors used in the above extreme environments mainly include MEMS film temperature sensors, thermistors and optical temperature sensors, and how to solve the dynamic thermal response calibration of these sensors is the premise to ensure accurate and reliable measurement results , but so far the relevant research at home and abroad is still in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01K15/00
CPCG01K15/005
Inventor 凃程旭包福兵尹招琴
Owner CHINA JILIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap