阅读说明：本技术 一种飞行、语音数据的记录装置及方法 (Recording device and method for flight and voice data ) 是由 黄启飞 多思 徐闻拯 于 2019-07-17 设计创作，主要内容包括：本发明属于航空电子技术领域,特别涉及到一种飞行、语音数据的记录装置及方法,该装置包括组合式记录器、三轴加速度计、冲击开关、区域话筒、独立电源；组合式记录器分别与独立电源、区域话筒、三轴加速度计、冲击开关、区域话筒连接。该装置在飞机发生剧烈撞击或者出现异常,加速度值超过正常值时,若机上电源系统发生异常,可以通过独立电源正常供电,正常记录事故发生后10min的宝贵数据,为空难提供最直接,最有力的证据。记录方法中加入音频测试回放功能,实时监控音频记录的正确性。(The invention belongs to the technical field of avionics, and particularly relates to a recording device and a method of flight and voice data, wherein the device comprises a combined recorder, a three-axis accelerometer, an impact switch, an area microphone and an independent power supply; the combined recorder is respectively connected with the independent power supply, the regional microphone, the three-axis accelerometer, the impact switch and the regional microphone. When the airplane is violently impacted or abnormal and the acceleration value exceeds the normal value, if the onboard power supply system is abnormal, the device can normally supply power through the independent power supply and normally record the precious data 10min after the accident happens, thereby providing the most direct and powerful evidence for the air crash. The recording method is added with an audio test playback function, and the accuracy of audio recording is monitored in real time.)

1. The recording device of flight, pronunciation data, wherein the said apparatus includes the combined recorder, triaxial accelerometer, impact switch, area microphone, independent power;

the combined recorder is respectively connected with an independent power supply, an area microphone, a three-axis accelerometer, an impact switch and the area microphone;

when the impact switch is in a crash event, a power supply path of the combined recorder is cut off, and an independent power supply is adopted for supplying power;

the three-axis accelerometer provides the axial and lateral method added velocity magnitude value and self-checking information of the airplane to the onboard equipment;

the independent power supply supplies power to the impact switch, the combined recorder and the regional microphone after the system power supply is lost.

2. The apparatus of claim 1, wherein the recorder employs two combination recorders with crash protection components and underwater positioning beacons;

the three-axis accelerometer can acquire three axial accelerations in real time and can calculate a three-axis resultant acceleration.

3. A recording method of a recording apparatus according to claim 1, characterized in that the method comprises the steps of:

s1: initializing;

s2: detecting BIT;

s3: controlling communication;

s4: storage management;

s5: audio acquisition;

s6: and (5) audio detection.

4. The recording method of flight, voice data according to claim 3, wherein the step S1: completing system boot and environment initialization, including initialization of an external device interface and initialization of application layer software; and saving the power-on self-test result.

5. The recording method of flight, voice data according to claim 3, wherein the step S2: and realizing self-detection functions including power-on self-detection, maintenance self-detection and periodic self-detection, and recording the state information stored in the process.

6. The recording method of flight, voice data according to claim 3, wherein the step S3: completing ARINC717 bus data receiving and processing; ARINC429 bus data receiving and processing; task scheduling and protocol analysis, recording/stopping command judgment and other functions; and meanwhile, receiving a command sent by system maintenance equipment through an Ethernet bus interface, carrying out protocol analysis according to a protocol to generate a corresponding task, and responding to an execution result of the task after the task is executed.

7. The recording method of flight, voice data according to claim 3, wherein the step S4: and receiving the tasks which do not come from the communication control module through the message list, executing operations of creating a file directory, recording data, downloading the file directory, downloading the data, reading and writing configuration codes and the like, and responding the execution result of the tasks to the communication control module.

8. The recording method of flight, voice data according to claim 3, wherein the step S5: and finishing the initialization of the audio coding chip, acquiring 4 paths of audio signals, sending the acquired audio data to the storage management module, storing the acquired audio data in the storage component, and starting or stopping the audio acquisition and recording operation.

9. The recording method of flight, voice data according to claim 3, wherein the step S6: and adding a new audio data test playback function, and judging the correctness of audio recording work in real time.

Technical Field

The invention belongs to the technical field of avionics, and particularly relates to a method and a device for recording flight and voice data.

Background

With the continuous development of society, the airplane plays an increasingly important role in life, and the flight safety of the airplane is improved. A special electronic recording device is assembled on modern aircraft, commonly called as a black box, the professional term is a recorder, various data in the flight process of the aircraft can be recorded and stored in the black box, once an accident occurs, the data in the whole accident process is recorded in the black box, and people acquire and resolve the data recorded in the recorder through ground maintenance equipment to restore the whole accident process. When no accident occurs, the flight process of the airplane is reproduced and monitored through data analysis, the future state of the airplane is further predicted, and people are helped to eliminate the future flight hidden danger.

Because the existing recorder adopts the onboard power supply for power supply, when the airplane suddenly has heavy impact and abnormality, the onboard power supply system is likely to fail, or abnormal voltage occurs to damage the recorder, so that the data of the accident at the critical moment can not be recorded, and the traditional recorder obviously has serious defects for today with increasingly strict flight safety.

Disclosure of Invention

The purpose of the invention is as follows: the recording device and the recording method for the flight and voice data can accurately record various data in the flight process of the airplane, and can complete continuous recording by supplying power through an independent power supply when a power supply system of the airplane breaks down.

The technical scheme of the invention is as follows: a recording device for flight voice data comprises a combined recorder, a three-axis accelerometer, an impact switch, an area microphone and an independent power supply;

the combined recorder is respectively connected with an independent power supply, an area microphone, a three-axis accelerometer, an impact switch and the area microphone;

when the impact switch is in a crash event, a power supply path of the combined recorder is cut off, and an independent power supply is adopted for supplying power;

the three-axis accelerometer provides the axial and lateral method added velocity magnitude value and self-checking information of the airplane to the onboard equipment;

the independent power supply supplies power to the impact switch, the combined recorder and the regional microphone after the system power supply is lost.

Preferably, the recorder adopts two combined recorders with a crash protection component and an underwater positioning beacon;

the three-axis accelerometer can acquire three axial accelerations in real time and can calculate a three-axis resultant acceleration.

Another object of the present invention is to provide a recording method of the above-mentioned recording apparatus, the method comprising the steps of:

s1: initializing;

s2: detecting BIT;

s3: controlling communication;

s4: storage management;

s5: audio acquisition;

s6: and (5) audio detection.

Preferably, the step S1: completing system boot and environment initialization, including initialization of an external device interface and initialization of application layer software; and saving the power-on self-test result.

Preferably, the step S2: and realizing self-detection functions including power-on self-detection, maintenance self-detection and periodic self-detection, and recording the state information stored in the process.

Preferably, the step S3: completing ARINC717 bus data receiving and processing; ARINC429 bus data receiving and processing; task scheduling and protocol analysis, recording/stopping command judgment and other functions; and meanwhile, receiving a command sent by system maintenance equipment through an Ethernet bus interface, carrying out protocol analysis according to a protocol to generate a corresponding task, and responding to an execution result of the task after the task is executed.

Preferably, the step S4: and receiving the tasks which do not come from the communication control module through the message list, executing operations of creating a file directory, recording data, downloading the file directory, downloading the data, reading and writing configuration codes and the like, and responding the execution result of the tasks to the communication control module.

Preferably, the step S5: and finishing the initialization of the audio coding chip, acquiring 4 paths of audio signals, sending the acquired audio data to the storage management module, storing the acquired audio data in the storage component, and starting or stopping the audio acquisition and recording operation.

Preferably, the step S6: and adding a new audio data test playback function, and judging the correctness of audio recording work in real time.

Advantageous effects

Due to the adoption of the technical scheme, compared with the prior art, the aircraft has the following positive effects and advantages that when the aircraft is violently impacted or abnormal, the acceleration value exceeds the normal value. When the power supply system on the machine is abnormal, the power can be normally supplied through the independent power supply, valuable data of 10min after an accident occurs can be normally recorded, and the most direct and powerful evidence is provided for the air crash. And the direction for improving various performances of the airplane is provided for scientific and technical personnel, and the incidence rate of air accidents is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a flow chart of the procedural method of the present invention;

FIG. 3 is a schematic diagram of the stand-alone power supply configuration of the present invention;

FIG. 4 is a schematic diagram of a three-axis accelerometer configuration of the present invention;

Detailed Description

The invention is described in further detail below with reference to the following figures and examples, but without any limitation thereto. Please refer to fig. 1 to 4.

The invention relates to a recording method and a device of flight and voice data, as shown in figure 1, the device comprises combined recorders (2), a three-axis accelerometer, impact switches (2), a regional microphone and an independent power supply. Flight data sent by DMC equipment on a combined recorder receiver through an ARINC717 bus is used for collecting and recording 1-channel cabin sound information output by a regional microphone and 3-channel voice information output by ACP equipment, UTC time, data link information and other information on a 2-channel ARINC429 bus receiver are used for sending self state information through the 1-channel ARINC429 bus, and 2-channel discrete quantity information sent by a recorder control panel is received; when a collision damage event occurs, the impact switch cuts off a power supply path of the combined recorder, and an independent power supply is adopted for supplying power so as to ensure that the combined recorder records normally within 10 min; the three-axis accelerometer provides the axial acceleration value, the lateral acceleration value and the normal acceleration value of the airplane and self-checking information to onboard equipment; the independent power supply supplies power to the impact switch, the combined recorder and the regional microphone after the system power supply is lost, and the requirement of recording 10min data signals after the system is powered down is met. The area microphone provides 1-way audio information to each of the 2 combination recorders and 1-way audio information output to the information management system.

Figure 2 shows a flow of a method of performing recording,

initializing; completing system boot and environment initialization, including initialization of an external device interface and initialization of application layer software; saving a power-on self-test result;

and (3) BIT detection: and realizing self-detection functions, including power-on self-detection, maintenance self-detection and periodic self-detection. Saving state information in the recording process;

and (3) communication control: the communication control module is a main control core module of FB-52 software and mainly completes ARINC717 bus data receiving and processing; ARINC429 bus data receiving and processing; task scheduling and protocol analysis, recording/stopping command judgment and the like. Meanwhile, the command sent by the system maintenance equipment is received through the Ethernet bus interface, the protocol is analyzed according to the protocol to generate a corresponding task, and after the task is completed, the execution result of the task is responded;

storage management: and receiving the task from the communication control module through the message queue, executing operations such as file directory creation, data recording, file directory downloading, data downloading, code reading and writing configuration and the like, and responding the execution result of the task to the communication control module.

Audio acquisition: the initialization of the audio coding and decoding chip is completed, 4 paths of audio signals are collected, the collected audio data are sent to the storage management module and stored in the storage component, and the audio collection recording operation can be started or stopped;

and (3) audio testing: and completing the audio data test function and judging the working correctness of the audio recording function.

As shown in fig. 3, which is a schematic diagram of a power supply structure, the independent power supply includes a power supply control module and an energy storage module. The independent power supply saves electricity to complete initialization, system boot and environment initialization, including initialization of an external device interface and initialization of application layer software; saving a power-on self-test result; the acquisition of state signals and various analog signals is completed, including the power supply voltage output by the boosting DC/DC, the power supply voltage output by the whole device, the voltage of an energy storage component, the ambient temperature and the like, and the output voltage is controlled within the range of 18 VDC-32.2 VDC; controlling the output and the output time of the output power supply according to the monitored power failure signal; the system fault, state information and various collected analog signals are sent out, so that the equipment state can be conveniently monitored and isolated.

As shown in fig. 4, which is a schematic of a three-axis accelerometer structure, the acceleration acquisition board: completing the acquisition of three axial accelerations; a data acquisition board: outputting the three acquired axial accelerations through an ARINC-429 interface, receiving a self-checking starting signal through the ARINC-429 interface to complete self-checking, and outputting a self-checking result through the ARINC-429 interface; a power supply module: the power supply module converts the input +28V direct current power supply into the internally required +5V direct current.