Comprehensive protection type audio/video recorder

Abstract

The invention belongs to the technical field of avionics, and relates to a comprehensive protection type audio / video recorder which comprises a main control module, a power supply module and an anti-crash protection component, wherein the power supply module is connected with the main control module and is used for supplying power to the main control module; the main control module is connected with the anti-crash protection component; the main control module is further connected with a plane bus through an AFDX (Avionics Full-Duplex Ethernet) bus and an ARINC-429 (Aeronautical Radio Incorporation) bus; the AFDX bus is connected with a plane digital camera, ground maintenance equipment and a software loader respectively, and is connected with a plane digital sound picker through a cabin sound data wire. The comprehensive protection type audio / video recorder has an AFDX bus interface, so that digital voice data can be acquired; due to the ARINC-429 bus, UTC (Universal Time Code) time can be acquired, the Beijing time and the UTC time are recorded in each data frame, and thus multi-channel data synchronism can be conveniently achieved; meanwhile, the system is capable of acquiring audio data and video data which are both digital signals; in addition, the universality is improved as power is supplied through 115AC and 28VDC; lightning protection circuits are designed for external interfaces, so that lightning indirect effects can be prevented.

Description

technical field [0001] The invention belongs to the technical field of avionics and relates to a protective audio and video comprehensive recorder. Background technique [0002] In the previous design of the protective cockpit audio and video recorder, all the analog signals were collected, and special data processing software must be used for conversion when performing ground restoration. With the development of digital audio and video collection technology, it is possible to collect and record digital signals. The development of a protective recorder for audio and video data is on the agenda. [0003] At the same time, the indirect effect of lightning was not designed in the previous design of protective audio and video acquisition, but in the new domestic civil aircraft, the requirements for lightning protection are becoming increasingly prominent, and the demand for developing a new type of protective cockpit audio and video integrated recorder is becoming increasingly u...

AI Technical Summary

Problems solved by technology

[0003] At the same time, in the previous design of protective audio and video acquisition, lightning indirect effect design was not carried out. In the new domestic civil aircraft, the requirements for lightning protection are becoming increasingly prominent, and the demand for developing a new type of protective cockpit audio and video integrated recorder is becoming increasingly urgent.

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