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BIT method of independent power supply module inside protection recorder

A technology of independent power supply and recorder, applied in the field of avionics, can solve the problems of inconvenience, achieve the effect of improving maintainability, ensuring integrity, and solving the problem of inconvenient detection

Active Publication Date: 2019-12-20
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, it is very inconvenient to manually detect whether the function of the independent power module inside the product is invalid.

Method used

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  • BIT method of independent power supply module inside protection recorder

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing the present invention is described in further detail, please refer to figure 1 .

[0024] 1) Power-off indication signal setting: design the aircraft 28V DC power supply monitoring circuit in the internal power module of the protective recorder, and output the power-off indication signal when it is powered off;

[0025] 2) Design the BIT detection function in the data management module software in the protective recorder:

[0026] a) After the product is powered on and the initialization function is completed, setting the variable x=0 is invalid, and y=0 is invalid; set timers T1 and T2, and T1 starts timing;

[0027] b) When the timer T1 counts for 15 minutes, set the variable x=1 to be valid, and write it into the flash data storage area of ​​the protective recorder, indicating that the independent power supply has enough charging time after the product is powered on, and the judgment of the independent power supply func...

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Abstract

The invention provides a BIT method of an independent power supply module inside a protection recorder. The BIT method comprises the following steps of Step 1, setting a power failure indicating signal; Step 2, designing independent power supply BIT detection in data management module software in the protection recorder; and Step 3, judging the independent power supply function failure of the protection recorder. The BIT method has the advantages that under the condition that a machine box of a product is not opened, through the self BIT function setting of the product, whether the function ofthe independent power supply module inside the product fails or not is conveniently and fast detected; and the maintenance of the product is convenient.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a BIT method for an independent power supply module inside a protective recorder (commonly known as a black box). Background technique [0002] Protective recorder is an avionics device used to complete the acquisition and recording of flight data information during the entire operation of the aircraft. The internal crash protection components have protection capabilities such as impact resistance, fire resistance, and corrosion resistance, so that they can be protected after a flight accident. Save record information. The equipment is mainly used for aircraft maintenance, flight training assessment and accident investigation and analysis. [0003] At present, the new protection recorder has the independent power supply function. As a minimum performance requirement, the independent power supply function of the protective recorder can independently support the prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40B64D45/00
CPCG01R31/40B64D45/00
Inventor 郭锁林屠晓涛傅康毅
Owner SHAANXI QIANSHAN AVIONICS
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