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Embedded health monitoring system for active and passive structure of aeroplane

A health monitoring system, an active and passive technology, applied in the testing of machines/structural components, measuring devices, impact testing, etc., can solve problems such as inconvenient use for users, huge equipment, complicated connection relationships, etc., and achieve convenient aircraft maintenance Personnel, increased monitoring area, and good scalability

Active Publication Date: 2011-06-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research and application of structural health monitoring technology based on active and passive Lamb waves and piezoelectric sensor arrays at home and abroad are all carried out offline on the ground, the equipment used is huge, the connection relationship is complicated, and it is inconvenient for users to use; The airborne structural health monitoring system must have the characteristics of anti-vibration, anti-electromagnetic interference, small size, light weight, easy to carry and install, and convenient for aircraft maintenance personnel to use; if it is applied to the structural health monitoring of large aircraft, each main bearing Piezoelectric array sensors are required for any force structure, so it is necessary to use multiple sets of structural health monitoring systems to form a distributed monitoring network to complete the health monitoring of large aircraft structures. At this time, each structural health monitoring system must be able to communicate with each other and be able to communicate with Other airborne equipment (such as flight environment parameter test equipment, mechanical operation equipment, etc.) can interact to jointly diagnose the health status of the aircraft. This requirement cannot be met by current ground structure health monitoring equipment.

Method used

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  • Embedded health monitoring system for active and passive structure of aeroplane
  • Embedded health monitoring system for active and passive structure of aeroplane
  • Embedded health monitoring system for active and passive structure of aeroplane

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Embodiment Construction

[0054] Such as figure 1 As shown, this embodiment is an embedded aircraft active and passive structure health monitoring system based on PC / 104-plus architecture, including a software module, a system power supply module, a controller module, a high-speed memory module, a sensor signal acquisition module, a signal Amplifying module, acoustic emission triggering module, channel switching module, digital management module, excitation signal output module, power amplifying module, state control indicating module, signal switching module.

[0055] Such as figure 2 As shown, the whole system accepts external DC 18-32V power supply, and the system power supply module converts the external power supply into the power supply required by each module in the system except the power amplifier module through DC / DC, including +5V / 10A, - 5V / 2A, +12V / 1A, -12V / 0.3A, this part of the power supply is provided to the controller module, and then the controller module sends the power to each modu...

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Abstract

The invention discloses an embedded health monitoring system for an active and passive structure of an aeroplane, comprising a software module, a system power supply module, a controller module, a high-speed memory module, a sensor signal acquisition module, a signal magnifying module, an acoustic emission triggering module, a channel switching module, a digital management module, an excitation signal output module, a power magnifying module and a signal transfer module. The embedded health monitoring system can monitor the health condition of the aeroplane structure on line, has the advantages of compact structure, vibration resistance, electromagnetic interference resistance, small size, light weight, convenient carrying and installation, convenience for the maintenance personnel of theaeroplane and capability of realizing onboard carrying, integrates a plurality of damage monitoring methods, and automatically extracts structural damage characteristics and distinguishes the damages. In addition, the system has good expandability so as to very conveniently collocate and expand healthy monitoring software and healthy monitoring hardware; and the system is provided with standard onboard equipment interfaces, thereby being convenient for networking of a plurality of sets of systems and communication with other onboard systems.

Description

technical field [0001] The present invention relates to a structural health monitoring system based on active and passive Lamb wave and piezoelectric array sensor technology, in particular to an anti-vibration, anti-electromagnetic interference, small size, light weight, easy to carry and install, suitable for aircraft onboard, Embedded structural health monitoring system for aircraft maintenance personnel. Background technique [0002] Aircraft safety is a paramount issue. A plane crash brings not only economic damage, but also extensive political and social impacts. In recent years, many aircraft crashes have been caused by the fatigue of the main load-bearing structure of the aircraft and the disintegration of the aircraft body. Structural health monitoring technology can realize structural health self-diagnosis online to ensure the safety of structures and reduce maintenance costs. It is a new concept of using smart material structures, using the advanced sensing / actu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/14G01M7/08G01M99/00
Inventor 袁慎芳邱雷张炳良苏永振董晨华刘沛沛
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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