QCL accelerated life evaluation method
An accelerated life and accelerated life test technology, applied in the direction of instruments, design optimization/simulation, calculation, etc., can solve the problems of product life evaluation lagging technology and products, affecting user use and maintenance, high cost of QCL, etc., to achieve high reliability science and technology Difficulties, shortening life test time, and reducing the effect of test sample size
Pending Publication Date: 2022-07-29
成都智达和创信息科技有限公司
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Problems solved by technology
[0003] The use of QCL assembly system has the characteristics of long-term work. With the expansion of application fields, higher requirements are put forward for the working life of QCL. At present, there are few studies on the working life of QCL. Due to the high cost and high value of QCL, the use The conventional method and quantity to evaluate and verify its working life not only need to consume a lot of manpower, material resources and time, but also cannot be realized in a short period of time. The product life evaluation lags behind the development of technology and products seriously, which seriously affects the use and maintenance of users
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[0046] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. On the contrary, embodiments of the present invention include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.
[0047] A method for evaluating the accelerated life of QCL, which is based on the evaluation of accelerated life of temperature stress, including the following steps:
[0048] S1: Carry out a bottom-up test or a strengthening test on the QCL to determine the damage limit value of the temperature stress and the safe acceleration range of the temperature stress;
[0049] S2: Accelerated life test is carried out on the safe acceleration range of QCL and temperature stress with the temperature stress damage limit value of QCL and the maximum temperature stress value specified in the specification, and an accelerated te...
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The invention discloses a QCL accelerated life assessment method, which is based on temperature stress accelerated life assessment, and comprises the following steps: S1, carrying out a preliminary test or a strengthening test on a QCL, and determining a damage limit value of the temperature stress and a safe acceleration range of the temperature stress; s2, carrying out an accelerated life test on the safety acceleration range of the QCL and the temperature stress according to the temperature stress damage limit value of the QCL and the highest temperature stress value specified by the specification, and constructing an accelerated experiment model; s3, a likelihood function is constructed on the basis of an acceleration experiment, acceleration factors under different stress levels are calculated through modes such as data iteration, and the reliable service life of the QCL is evaluated; according to the method, the QCL product working life and accelerated life test theories are combined, a QCL product accelerated life test scheme is designed, the activation energy of the product and acceleration factors under all stress levels are calculated by adopting a maximum likelihood method, and a foundation is laid for QCL working storage life scheme design and data evaluation.
Description
technical field [0001] The invention relates to the field of QCL laser performance parameters and reliability testing and evaluation technology, in particular to a QCL accelerated life evaluation method. Background technique [0002] QCL (Quantum Cascade Laser) is a unipolar light source based on electronic transitions between semiconductor-coupled quantum well subbands. It has the characteristics of high monochromaticity, high coherence, high directivity, high brightness and long life. It is mainly used in gas detection, medicine, infrared countermeasures, drug detection and other fields. It is an ideal light-emitting device for mid-infrared gas molecule detection. With the development of technology and the improvement of craftsmanship, QCL has the characteristics of long working life. [0003] The use of QCL assembly system has the characteristics of long-term work. With the expansion of application fields, higher requirements are put forward for the working life of QCL....
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IPC IPC(8): G06F30/20G06F119/04G06F119/08G06F119/14
CPCG06F30/20G06F2119/04G06F2119/08G06F2119/14
Inventor 赵旭姚洪梅王希政胡彬李强
Owner 成都智达和创信息科技有限公司