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

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 ...

AI Technical Summary

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

Images