Audio-based carrier rocket fault detection device and method

A technology for launch vehicles and fault detection, applied in measurement devices, transportation and packaging, and testing of machine/structural components, etc., can solve problems such as system impact, and achieve the effect of ensuring comprehensiveness, reducing weight, and improving test coverage.

Active Publication Date: 2018-04-27
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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Problems solved by technology

At the same time, the failure of this contact design itself will also have a certain impact on the system

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  • Audio-based carrier rocket fault detection device and method
  • Audio-based carrier rocket fault detection device and method
  • Audio-based carrier rocket fault detection device and method

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Embodiment Construction

[0034] The sound-based launch vehicle fault detection system of the present invention is used to collect sound signals from the rocket test process, process and identify the signals, and confirm the working status of the equipment on the rocket through the resolution and comparison of the sound database to improve the rocket test coverage. sex.

[0035] The launch vehicle equipment in the operating state produces a large number of sound signals. The detection system collects these acoustic signals through multiple acoustic transducers. After the sound signal is adjusted and converted and the signal is collected, it is transmitted to the host computer for processing; the host computer extracts the time-frequency domain characteristics of the system through the corresponding signal processing algorithm, and judges the working sequence of the system and whether there is a fault. , and then show the fault location through the relevant fault location algorithm. The specific proce...

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Abstract

The invention relates to an audio-based carrier rocket fault detection device and method. A sound sensor array receives a sound signal of a to-be-tested product of a rocket, and carries out signal acquisition processing on the sound signal; wavelet transformation and Fourier transformation are carried out, and then characteristic value extraction is carried out; a characteristic value is comparedwith a characteristic value of normal operation in a sound library, and if any characteristic value exceeds a limit threshold value, it is judged that the to-be-tested product on the rocket has a fault; and the characteristic value is compared with the sound characteristic of the corresponding typical fault in the sound library, and if the characteristic value is within the sound characteristic envelope range of a certain typical fault, it is judged that the fault type is the typical fault. According to the method, fault detection is carried out through the sound signals, the non-contact testof the rocket is realized, and test circuits inside the rocket are reduced, the problem caused by the fact that a circuit fault is tested on the rocket is avoided, and meanwhile, the weight of the rocket is reduced.

Description

technical field [0001] The invention relates to an audio frequency-based carrier rocket fault detection device and detection method, belonging to the field of fault detection. Background technique [0002] Diagnosing the system health status of the launch vehicle through testing is the basic means to ensure the successful launch of the rocket. In the past test technology, in order to diagnose the health status of the system, it is often necessary to add measurement points for signal acquisition in the system, whether it is sensitive pressure or acquisition The current, test channel pair and the system itself are a "cecal design", that is, they are in a non-working state after going to heaven. At the same time, the failure of this contact design itself will also have a certain impact on the system. [0003] As one of the characteristics of the system when it is working, the sound is recognizable to a certain extent and can reflect the working status of the equipment to a cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/22G01M99/00
CPCB64G1/22G01M99/005
Inventor 李强陈海鹏王海涛王子瑜刘洋刘秉董余红程兴朱永泉宋敬群
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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