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Health management of laser rangefinder considering maximum continuous working time

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Journal of Mechanical Science and Technology Aims and scope Submit manuscript

Abstract

High-power lasers have severe thermal effects. The heat buildup during long-term operation will increase the threshold current of the laser and the internal defects, which will seriously affect the lifetime of the device. A temperature sensor is difficult to install on the laser rangefinder due to the small size of the solid-state laser device. Considering this situation, this work analyses the thermal mechanism of the laser rangefinder and proposes a temperature calculation method for the crystal working substance inside the laser rangefinder based on the finite element simulation to obtain the crystal center temperature and thermal model with the working time. Then, the prediction model of the maximum continuous working time of the laser can be obtained. The proposed model can provide an early scientific warning for the remaining continuous working time of the solid-state laser and improve the single-shot utilization of the solid-state laser to a certain extent. A comprehensive health management framework of laser rangefinders including FMEA is also proposed.

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Abbreviations

L :

Distance

c :

Velocity

ESR t :

Equivalent series resistance value at t

T h :

Environment temperature

ESR 0 :

Equivalent series resistance value at t = 0

k :

Constant

E :

Boltzmann constant

a :

Coefficient

b :

Coefficient

ΔL :

Inductance change during t

L 0 :

Initial inductance

E :

Activation energy

G :

Gas constant

T α :

Environment temperature

ΔR F :

Resistance changes during t

\({R_{{F_\partial }}}\) :

Initial resistance

A :

Material ratio constant

h 0 :

Natural convection coefficient of the air

K x :

Thermal conductivity in x

K y :

Thermal conductivity in y

K z :

Thermal conductivity in z

q(x, y, z):

Heat flux density of the gain medium

α :

Absorption coefficient of the laser crystal

P in :

Power of the absorbed pump light

ω p 2(z):

Radius of the pump light

η h :

Thermal conversion coefficient

M 2 :

Beam quality factor of the pump light

λ p :

Wavelength of the pump light

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Acknowledgments

This work is supported by the Project of Science and Technology on Reliability Physics and Application Technology of Electronic Component Laboratory under Grant Number 6142806190302 and China Scholarship Council under Grant Number 202206070083.

Author information

Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, China

    Ying Zeng, Yu-Jin Wei, Yuan Chen & Hong-Zhong Huang

  2. Center for System Reliability and Safety, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, China

    Ying Zeng, Yu-Jin Wei, Yuan Chen & Hong-Zhong Huang

  3. Shanghai Institute of Space Power-sources, No. 2965 Dongchuan Road, Minhang, Shanghai, 200245, China

    Hai-Tao Chen

  4. State Key Laboratory of Space Power-sources Technology, No. 2965 Dongchuan Road, Minhang, Shanghai, 200245, China

    Hai-Tao Chen

  5. Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, The Fifth Electronics Research Institute of Ministry of Industry and Information Technology, Guangzhou, 511370, China

    Yuan Chen

Authors
  1. Ying Zeng
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Corresponding authors

Correspondence to Yuan Chen or Hong-Zhong Huang.

Additional information

Ying Zeng received his M.S. degree from the University of Electronic Science and Technology of China, Chengdu, China in 2019. He is pursuing his Ph.D. degree in Mechanical Engineering at the University of Electronic Science and Technology of China. His research interests include reliability analysis of electronics and PHM for electronics.

Hai-Tao Chen is a senior engineer at Shanghai Institute of Space Power-sources, Shanghai, China. His research interests include the design of space power supplies and reliability analysis of space power supplies.

Yu-Jin Wei is pursuing his M.S. degree in Mechanical Engineering at the University of Electronic Science and Technology of China, Chengdu, China. His research interests include reliability analysis of micro/nanosensors and thermal simulation of electronics.

Yuan Chen was born in 1983. She is a senior engineer in the Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, the No. 5 Electronics Research Institute of the Ministry of Industry and Information Technology. She received her M.S. degree in Microelectronics from Jilin University in 2007. She is currently a doctoral student in the School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China. Her research interests are reliability and failure mechanism of 3D packaged integrated circuits and power devices. She has published about 30 papers in journals and international conferences. e]chenyuan@ceprei.com

Hong-Zhong Huang is a Fulltime Professor at the School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China. He is also the director of the Center for System Reliability and Safety. He has held visiting appointments at several universities in the USA, Canada, and Asia. He has published 280 journal papers and 8 books in the fields of reliability engineering, optimization design, fuzzy set theory, and product development. Prof. Huang is an ISEAM Fellow, a technical committee member of ESRA, a Co-Editor-in-Chief of the International Journal of Reliability and Applications, and an Editorial Board Member of several international journals.

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Zeng, Y., Chen, HT., Wei, YJ. et al. Health management of laser rangefinder considering maximum continuous working time. J Mech Sci Technol 36, 4875–4883 (2022). https://doi.org/10.1007/s12206-022-0901-4

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  • DOI: https://doi.org/10.1007/s12206-022-0901-4

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