Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device

A pressure sensor and redundant device technology, applied in measuring devices, instruments, force/torque/work measuring instruments, etc., can solve the problem of low reliability of pressure sensors, and achieve the effects of convenient maintenance, improved accuracy, and reduced errors

Inactive Publication Date: 2012-10-03
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the low reliability of the existing aircraft electric brake pressure sensor, the present invention provides a redundant device for the aircraft electric brake pressure sensor, which can improve the accuracy of the pressure sensor when the redundant pressure sensor is working normally. When the redundancy pressure sensor fails, the fault point is automatically detected, and the failure redundancy pressure sensor is isolated, and the normal pressure sensor is used to continue to monitor the aircraft brake pressure, which effectively improves the reliability of the aircraft electric brake pressure sensor

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  • Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device
  • Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device
  • Redundancy device for aircraft electric brake pressure sensor and method for controlling redundancy device

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[0016] The redundant device and management method of the aircraft electric brake pressure sensor is based on the theory of the original pressure sensor system, and at the same time, the double redundant high-performance pressure sensor is selected, and the double redundant pressure acquisition and signal processing method is developed. device. The redundant device can work with high efficiency at the same time, and it can also automatically cut off the fault margin when the single redundancy unit fails, and the other normal redundancy pressure sensor provides pressure signal collection and processing. This invention not only ensures the normal operation of the aircraft electric brake pressure sensor system, improves the accuracy of pressure signal acquisition and processing, but also provides a solution in the event of a sudden failure of the system, so that it will not be damaged due to electrical signal transmission. During the process or the accidental failure of power elec...

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Abstract

The invention discloses a redundancy device for an aircraft electric brake pressure sensor and a method for controlling the redundancy device. Double redundancy pressure sensors acquire the brake pressure of the same points on an aircraft braked wheel and output two channels of brake pressure values; an adjustment circuit respectively adjusts the brake pressure values as voltage values which can be identified by an active directory (AD) port of a central processing unit (CPU); and the voltage values are respectively filtered by a filter circuit and input to the CPU. The invention has the advantages that when the redundancy pressure sensors normally operate, the accuracy of the pressure sensors can be improved; and when a certain redundancy pressure sensor fails, failure points are automatically detected, the redundancy pressure sensor which fails is isolated, aircraft brake pressure is continuously monitored by using the normal pressure sensor, and the reliability of the aircraft electric brake pressure sensor is effectively improved.

Description

technical field [0001] The invention relates to a pressure sensor redundancy device and a management method, in particular to a pressure sensor redundancy device and management method for an aircraft electric braking system. Background technique [0002] The aircraft electric brake pressure sensor system is an important part of the aircraft electric brake system. It is mainly used for real-time acquisition and batch processing of aircraft brake pressure. It is an important means to provide feedback on brake pressure. Its reliability affects the aircraft electric brake system and even Safety of the entire aircraft system. [0003] At present, the aircraft electric brake pressure sensor system mainly uses a single-redundancy pressure sensor, and is mainly committed to selecting high-performance and high-reliability power electronic devices and improving the reliability of the entire system from the perspective of signal transmission and signal processing. The paper "Research ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/28
Inventor 齐蓉戴志勇苏田青林辉李兵强
Owner NORTHWESTERN POLYTECHNICAL UNIV
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