Method for quickly analyzing universal reliability indicators of printed circuit board

A printed circuit board, rapid analysis technology, applied in the direction of road transport emission reduction, electrical digital data processing, special data processing applications, etc., can solve the problems of data error, data distortion, heavy labor, etc., to improve efficiency and flexibly apply sex, to achieve the effect of continuity

Active Publication Date: 2014-07-02
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0003] Existing fault tree analysis methods for electronic equipment need to use industry standards or manuals to conduct complex queries, which

Method used

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  • Method for quickly analyzing universal reliability indicators of printed circuit board
  • Method for quickly analyzing universal reliability indicators of printed circuit board
  • Method for quickly analyzing universal reliability indicators of printed circuit board

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Embodiment Construction

[0026] Below in conjunction with example further illustrate the present invention.

[0027] by figure 1 Take the stepper motor drive circuit shown as an example to quickly analyze the reliability index of the printed circuit board. The steps are as follows:

[0028] Step 1: establish the distribution model of reliability characteristic parameters of electronic components: take the Chinese military electronic equipment reliability prediction manual GJB / Z299C-2006 failure rate calculation formula as the basis to establish the distribution model of reliability characteristic parameters of electronic components; the stepper motor The electronic components on the drive circuit printed circuit board include resistors R1, R2, R3, R4, capacitors C1, C2, diodes D41, D42, D43, D44, D45, D46, D47, D48, light emitting diodes D56, semiconductor microcircuit U1 , U2, the distribution model of reliability characteristic parameters of these electronic components, as follows:

[0029] lambda...

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Abstract

The invention discloses a method for quickly analyzing universal reliability indicators of a printed circuit board. The method includes steps of setting up a reliability characteristic parameter distribution model of electronic components; acquiring an electronic component list by calling an interface function; compiling a detailed electronic component list of the printed circuit board; acquiring a table list containing universal failure parameters of all the electronic components according to the reliability characteristic parameter distribution model of the electronic components of the printed circuit board; calculating failure rate of the printed circuit board in the using environment; calculating system reliability, system unreliability and system average faultless service life of the printed circuit board according to the failure rate of the printed circuit board in the using environment. The design of the circuit board is of great guidance significance, continuity between the design of the circuit board and reliability analysis is realized, cross implementation of the design of the circuit board and the reliability analysis can be conveniently realized by users, and design efficiency of the circuit board is improved.

Description

technical field [0001] The invention belongs to the field of reliability analysis of electronic equipment, and in particular relates to a general rapid analysis method for reliability indexes of printed circuit boards. Background technique [0002] Printed circuit board (PCB) reduces wiring and assembly errors, improves automation level and production labor rate, and is widely used in the field of electronics industry. [0003] Existing fault tree analysis methods for electronic equipment need to use industry standards or manuals to conduct complex queries, which requires a large amount of labor. Once errors occur, large errors will occur in the evaluated data, and even serious data distortions will occur. . Reliability analysis has become an important task in product design and development. For electronic products, the types and quantities of system components are complex, and the reliability of components is greatly affected by conditions such as working status and envir...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02T10/82
Inventor 杨灿军冯建设李德骏张志峰张锋王晨
Owner ZHEJIANG UNIV
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