Triaxial accelerometer and impact detecting switch

Abstract

The invention belongs to the technical field of avionics, and particularly relates to a triaxial accelerometer and an impact detecting switch. The triaxial accelerometer and the impact detecting switch comprise a power module, an acceleration collecting board, and a data collecting board. The power module is connected with an external power source and an external button reset switch, and externally outputs power, and is connected to the acceleration collecting board and the data collecting board. The acceleration collecting board is connected to the data collecting board through a parallel busand outputs an acceleration signal to the data collecting board. The data collecting board comprises a microprocessor circuit and an A / D conversion circuit. According to the triaxial accelerometer and the impact detecting switch, the collected aircraft lateral, bus and normal acceleration can be output through an analog quantity, and can also be converted into a digital signal and output throughthe ARINC-429 bus and the AFDX bus which can adapt to multiple aircraft requirements, so that the maintainability of the equipment is improved; and two airborne devices are integrated, so that the total weight of the products is reduced.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a three-axis accelerometer and an impact detection switch. Background technique [0002] The three-axis accelerometer can collect the lateral, longitudinal and normal accelerations of the aircraft, and output them to the on-board acquisition equipment in the form of analog quantities, which can be used to monitor the flight attitude of the aircraft. The impact detection switch can detect the overload signal of the aircraft. When the overload signal is detected, it can output a status signal to the cockpit audio recorder to ensure that the cockpit audio recorder stops data recording within 10 minutes. However, in the past, these two devices were two devices. Because both devices need to collect the three axial accelerations of the aircraft, the functions are redundant. It is no longer suitable for new aircraft, and the maintenance and detection of the previous three-...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-axis acceleration and shock detection switch that can adapt to the aircraft, so as to solve the technical problems that the analog signals output by the three-axis acceleration and shock detection cannot adapt to the digital bus and the maintenance is poor.

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