CN106508108B - A kind of video speech data and the synchronous method of flight test system time - Google Patents
A kind of video speech data and the synchronous method of flight test system timeInfo
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- CN106508108B CN106508108B CN201218001827.6A CN201218001827A CN106508108B CN 106508108 B CN106508108 B CN 106508108B CN 201218001827 A CN201218001827 A CN 201218001827A CN 106508108 B CN106508108 B CN 106508108B
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Abstract
The invention discloses a kind of video speech data and the synchronous method of flight test system time, comprise the steps：Flight test system is to video speech test system time service；Timing acquisition video speech data of the video speech acquisition module according to time service, produce interrupt signal；CPU module responds interrupt signal, obtain timing code, and organize and contain the video speech Frame of timing code and read so as to obtaining timing code for ground video speech player, ground video speech player is added to time icon in subject image when playing, so timing tracking accuracy of the present invention is high, ground video speech player can flexibly change the time icon stacked system in subject image simultaneously, and in the video data of post analysis filing of taking a flight test, the engineer that takes a flight test directly use time can index, so that easily retrieving when the video data of special time period is analyzed, also beneficial to other test flight datas of comprehensive analysis, improve test flight data analyzing and processing efficiency.
Description
Technical field
The present invention relates to a kind of video speech data and the synchronous method of flight test system time, belong to aircraft
Flight Test field.
Background technology
Flight test system has many subsystems, video speech test system (VIDEO-AUDIO ACQUIRE
SYSTEM, abbreviation VADS) it is one of important subsystem therein, VADS video speech data include two-way
Multifunction display MFD (Multi Function Display), all the way HUD HUD (Head Up
Display), the data that cockpit alerting plate analog video image and 1-2 roads voice signal are used all the way；Wherein
MFD has the number of the systems such as winged control, avionics, radar, weapon, plug-in, automatic pilot, the inertial navigation of aircraft
According to and status information；HUD has the scenery picture data and aircraft flight height, speed, horse in front of cockpit
The supplemental characteristics such as conspicuous number, the angle of attack, yaw angle, the angle of pitch, engine speed, oil consumption, excess oil；Cockpit is accused
There is alert plate analog video image monitoring aircraft warning information the vision signal number that plate is imaged is alerted to aircraft cockpit
According to；The commander that 1-2 roads voice signal has the positions such as middle pilot and control tower, GDAS, blank pipe of taking a flight test instructs
The voice messaging data such as exchange and the sound signal data that the indivedual freight spaces of aircraft are monitored.
During Flight Test Monitor is carried out using flight test system, ground Flight Test Monitor personnel, engineering of taking a flight test
Teacher and take a flight test commander need using these above-mentioned video speech data obtain pilot seen by MFD, HUD and
Other video speech information, grasp aircraft state immediately, and monitoring is taken a flight test process, thus video speech data with
Flight test system time realize it is synchronous raising take a flight test safety, supervision pilot take a flight test operation it is whether correct,
Accurately, collaboration completes to be significant on highly difficult excessive risk flight test subject.Flight test system time is
Refer to when system subsystem (the Inter-Range Instrumentation of the airborne part of flight test system
Group B class, abbreviation IRIG-B) produce time.
Past, video speech data and the flight test system time synchronization of video speech test system have two kinds
Method, i.e. time video stacking method and video speech sample rate projectional technique, described time video superposition
Method refers to collection video formation subject image, then the time will be converted into time icon, and be directly superimposed to main body
In image, when subject image is played on ground, the position of time icon, size, direction, stacked system are not
It can change, and time icon is superimposed upon in subject image, can influence the integrality of subject image；Exist in addition
When being analyzed after taking a flight test the video data of filing, take a flight test engineer can not directly use time to video
Be indexed, when analyzing the video data of special time period, retrieval is difficult, be also unfavorable for using the time as
Other test flight datas of index carry out comprehensive analysis.Described video speech sample rate projectional technique is to be based on adopting
Sample rate extrapolates the time indirectly, so that video speech data and flight test system time synchronization are realized, institute
Timing tracking accuracy is low in this way.
The content of the invention：
The technical problem to be solved in the present invention is to provide a kind of synchronization accuracy height, and subject image is played on ground
When, the position of time icon, size, direction, stacked system can be changed flexibly, to filing after taking a flight test
Video data when being analyzed, the engineer that takes a flight test being capable of video that directly use time is indexed to video
The synchronous method of speech data and flight test system time.
In order to solve the above technical problems, a kind of video speech data of the present invention and flight test system time
Synchronous method, comprises the following steps：
Flight test system is to video speech test system time service；
The video speech acquisition module of video speech test system according to time service Timing acquisition video speech number
According to generation interrupt signal；
The CPU module response interrupt signal of video speech test system, obtains timing code；
The CPU module tissue of video speech test system contains the video speech data frame of timing code；
The ground video speech player of video speech test system reads video speech data frame, obtains the time
Code；
The ground video speech player of video speech test system utilizes the timing code and video speech number obtained
According to, play video speech while, time icon is superimposed in subject image.
When described time service refers to unite subsystem produce time-code mould from time signal to video speech test system
Block time service.
Described video speech data frame is made up of video speech data frame frame head and video speech frame data.
Described video speech data frame frame head is made up of frame head 1 and frame head 2, the number of frame head 1 and frame head 2
Identical according to content, described frame head 2 is the backup of described frame head 1.
Described video speech data frame head is made up of information 1, information 2, information 3 and timing code.
The present invention has a following good effect compared to prior art, a kind of video speech data of the invention with
The synchronous method of flight test system time, due to passing through time service, the IRIG-B times of flight test system with
Time-code module clock time synchronized, video speech acquisition module is when video speech data acquisition is completed to interrupt
Mode notify CPU module read access time code and organize to contain the video speech data frame of timing code so that
Ground video speech player can from video speech data frame extraction time code, realize play video speech
When simultaneous display time icon, so synchronization accuracy is high；Because video speech data frame contains video speech
The timing code at data acquisition moment, so ground video speech player can be changed flexibly in subject image
Time icon stacked system, the influence to subject image is preferably minimized, and filing is regarded after taking a flight test
When frequency is according to being analyzed, take a flight test engineer can directly use time video is indexed so that point
Easily retrieved during the video data for analysing special time period, also beneficial to other test flight datas using time as index
Comprehensive analysis is carried out, test flight data analyzing and processing efficiency is improved.
Brief description of the drawings
Fig. 1 is a kind of video speech data and the exemplary flow of the synchronous method of flight test system time of the present invention
Figure.
Fig. 2 is a kind of a kind of implementation of video speech data with the synchronous method of flight test system time of the present invention
The video speech data frame structure schematic diagram of example.
Fig. 3 is the frame head structural representation of Fig. 2 video speech data frame.
Fig. 4 is a kind of video speech data and the video speech of the synchronous method of flight test system time of the present invention
Test system structure schematic diagram.
Embodiment
With reference to specific embodiment, the invention will be further described.
Fig. 1 is video speech test system and the signal of the method for synchronizing time of flight test system of the present invention
Flow chart.The flow starts from step 101, then, in step 102, the time signal that IRIG-B is produced to regarding
The time-code module time service of frequency tone testing system, makes time and the flight test system of video speech test system
Time consistency；
In step S103, video speech acquisition module produces collection according to the sequential of time service and acted, and completes collection
Video speech data, produce and interrupt (INT) signal.
In step S104, the CPU module response of video speech test system interrupts (INT) signal, is interrupting letter
Read access time code in number.
In step S105, video speech test system CPU module video speech data and timing code, and read it
His some parameters, tissue completes to contain the video speech data frame of timing code, then by video speech data
Frame is distant to ground by record storage module record storage, or by telemetry PCM output module remote measurements
Survey receiving device.
In step S106, the ground video speech player of video speech test system from record storage module or
Person reads video speech data frame from ground telemetering receiving device, completes the parsing of video speech data frame, and
Obtain timing code.
In step S107, the ground video speech player of video speech test system utilizes the timing code obtained
With video speech data, while video speech is played, time icon is superimposed in subject image, is superimposed
Mode include time icon whether be superimposed, the size of superposed positions and time icon, character color, transparency
Deng so that it is synchronous with flight test system time to complete video speech data.
This method flow terminates in step S108.
Fig. 2 is a kind of video speech data and one kind of the synchronous method of flight test system time of the present invention
The video speech data frame structure schematic diagram of embodiment.One video speech data frame is by frame head 1, the and of frame head 2
Video speech frame data are constituted, and frame head 1 is identical with the data content of frame head 2, and described frame head 2 is described
Frame head 1 backup, it is therefore an objective to prevent lose or error code, video speech frame data be video speech collection mould
Block according to the Timing acquisition of time service video speech data.
Fig. 3 is video speech data frame frame head schematic diagram of the present invention.Video speech data frame frame head
It is made up of information 1, information 2, information 3 and timing code, information 1, information 2, information 3 are video speech
The characteristic information of data frame, mainly receives the video language with ground video speech play software for ground telemetering
Sound reconstruct provides identification feature, and timing code characterizes video speech data frame collection moment corresponding timing code
Value.
Fig. 4 is a kind of video speech data and the video of the synchronous method of flight test system time of the present invention
Tone testing system structure diagram.The video speech test system operation logic is as follows：
The time-code module D403 of video speech test system according to the IRIG-B signals of input in initialization,
Automatic detection IRIG-B signals and characteristic, complete IRIG-B synchronous initiations, subsequently enter normal work shape
State, completes time service once in 1 second, makes time and the examination of video speech test system in normal operation
Fly test system time consistency；
Video speech acquisition module D402 produces collection action according to the sequential of time service, and video speech signal is entered
Row analog/digital conversion, form conversion, data compression, complete collection video speech data, produce and interrupt (INT)
Signal.
Video speech test system CPU module D401 responses are interrupted, when being read in interrupt function by bus
Between code.
Video speech test system CPU module D401 video speech data and timing code, and read some other
Parameter, tissue completes to contain the video speech data frame of timing code, then passes through video speech data frame
Record storage module D405 record storages, or pass through telemetry PCM output module D404 remote measurements to ground
Face telemetry receiving equipment.
Under real-time telemetry pattern, the ground telemetering receiving device D406 of video speech test system, which is received, to be regarded
Frequency speech data frame, and it is transferred to ground video speech player D407, ground video speech player D407
Video speech data frame is obtained, the parsing of video speech data frame is completed according to video speech data frame structure,
And obtain timing code.
Under the video speech analysis playback mode after taking a flight test, ground video speech player D407 reads video
Voice document, the parsing of video speech data frame is completed according to video speech data frame structure, and obtains the time
Code；All data are traveled through, time index is formed so that be easy when analyzing the video data of special time period
Retrieval, also carries out comprehensive analysis beneficial to other test flight datas using time as index, improves test flight data point
Analyse treatment effeciency.
Claims (4)
1. a kind of video speech data and the synchronous method of flight test system time, it is characterised in that：Including such as
Lower step：
Flight test system is to video speech test system time service；
The video speech acquisition module of video speech test system according to time service Timing acquisition video speech data,
Produce interrupt signal；
The CPU module response interrupt signal of video speech test system, obtains timing code；
The CPU module tissue of video speech test system contains the video speech data frame of timing code；
The ground video speech player of video speech test system reads video speech data frame, obtains the time
Code；
The ground video speech player of video speech test system utilizes the timing code and video speech number obtained
According to, play video speech while, time icon is superimposed in subject image.
2. a kind of video speech data according to claim 1 and the synchronous method of flight test system time,
It is characterized in that：The time signal that subsystem of being united when described time service is is produced is to video speech test system
Time-code module time service.
3. a kind of video speech data according to claim 1 and the synchronous method of flight test system time,
It is characterized in that：Described video speech data frame is by video speech data frame frame head and video speech frame data
Composition.
4. a kind of video speech data according to claim 3 and the synchronous method of flight test system time,
It is characterized in that：Described video speech data frame frame head is made up of frame head 1 and frame head 2, frame head 1 and frame
First 2 data content is identical, and described frame head 2 is the backup of described frame head 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218001827.6A CN106508108B (en) | 2012-06-04 | 2012-06-04 | A kind of video speech data and the synchronous method of flight test system time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201218001827.6A CN106508108B (en) | 2012-06-04 | 2012-06-04 | A kind of video speech data and the synchronous method of flight test system time |
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| CN106508108B true CN106508108B (en) | 2014-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846607A (en) * | 2017-09-30 | 2018-03-27 | 成都飞机工业（集团）有限责任公司 | A kind of multi-stream data synchronously stores and back method |
| CN112907782A (en) * | 2021-02-18 | 2021-06-04 | 江西洪都航空工业集团有限责任公司 | Multisource multi-type data playback device based on time synchronization |
-
2012
- 2012-06-04 CN CN201218001827.6A patent/CN106508108B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107846607A (en) * | 2017-09-30 | 2018-03-27 | 成都飞机工业（集团）有限责任公司 | A kind of multi-stream data synchronously stores and back method |
| CN112907782A (en) * | 2021-02-18 | 2021-06-04 | 江西洪都航空工业集团有限责任公司 | Multisource multi-type data playback device based on time synchronization |
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