CN105680930A - Method for transmitting emergency state of airplane in real time through voice radio - Google Patents
Method for transmitting emergency state of airplane in real time through voice radio Download PDFInfo
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Abstract
The invention relates to a method for transmitting an emergency state of an airplane in real time through a voice radio. The method comprises two working modes; one is an automatic mode; the other one is a manual mode; the automatic mode is as follows: preparation works are that the name of a special situation, parameter representation characteristics and the number of the special situation to be monitored in real time are definite; onboard works are that: according to information provided in the preparation works, a data flow is analyzed through onboard flight parameters; and the radio is operated to send the special situation to a ground commander after the special situation happens; ground works are that a ground radio receiver demodulates the published special condition; and, if a pilot feels that the airplane is in the special situation or needs to report to the ground, the airplane can work in the manual manner. The method disclosed by the invention is capable of automatically monitoring whole data of the airplane comprehensively and continuously; the voice radio can be used as a state monitoring centre of the whole airplane; a special radio or pod is unnecessary to increase; the economical efficiency and the implementation performance are high; and an external field is simple to modify.
Description
[technical field]
A kind of method by speech radio station real-time Transmission airplane emergency state of the present invention, belongs to flight safety field. Namely when military secret or civil aircraft awing meet with special circumstances, type and the rank of special circumstances is judged by onboard flight reference record system (hereinafter referred to as flying ginseng), it is sent to approach tower commander by airborne radio phone system, ground control person reminds or assist pilot to complete disposing task.
[background technology]
At present, in carrying out flight training and completing the process of various task, because of mechanical reason, pilot's health, the reason such as Automobile driving and vile weather, inevitably run into special circumstances, when there are special circumstances, pilot should report commander the very first time, pilot is assisted jointly to complete the disposal of special circumstances by commander, but actually due to by the level of training, the impact of the factors such as psychological traits and individual's quality, tend to occur judge to be forbidden to special circumstances, report situation that is unclear and that report too late, ground control person is easily made to be difficult to play a role, lose the most valuable opportunity of initially disposing. therefore, in this case, if commander can obtain the status report of aircraft the very first time, then have important effect to preventing accident. but the method generally adopted at present is by carrying additionally the mode of special gondola or private station by flying quality transmission to earth station, flight condition has been carried out by the process on ground, but so occupy the carry ability that aircraft is limited, additionally newly-increased radio station not only makes the weight of aircraft increase, have an effect on the electromagnetic compatibility of aircraft, aerodynamic characteristics and economy, therefore, it is difficult to all aircrafts are adopted this relatively costly method simultaneously. in order to solve this contradiction, the present invention can on the basis in existing speech radio station, it is achieved the ability that special circumstances send.
[summary of the invention]
Purpose:
It is an object of the invention to do not increasing on the basis of aircraft hardware, utilize the status data that each airborne equipment of aircraft platform that flight data recording system gathers sends in real time, by the method for specialist system, the special circumstances jeopardizing flight safety are judged from data stream, then encode according to predefined special circumstances, by handling the mode of radio detachable key switch, send in time to ground control person.
Described specialist system is the proper noun of artificial intelligence field, domain expert provides experience, it is with the logical expression of numeric representation by empirical conversion, and logical expression adopts the mode of logical operations be configured to rule base, rule base content correction is made to go out the experience of domain expert, when system is run, logarithm value information carries out logical judgment according to rule base, draws the conclusion of experience. In specialist system, most important part is rule base, i.e. one or more logical expressions and computing thereof, as long as providing out rule base, then the operation of specialist system just becomes the software system that common order performs.
Technical scheme:
A kind of method by speech radio station real-time Transmission airplane emergency state of the present invention, the method includes two kinds of mode of operations, and one is automated manner, including working on preparation work, machine and three parts of ground handling; Another kind is manual mode.
Automated manner
1. preparation work:
Preparation work indicates really to be numbered by the special circumstances title of monitor in real time, parameter characterization feature and special circumstances, it addition, also need the standard disposal process arranged corresponding to these special circumstances, in order to commander's reference.
The prompting exercise question that described special circumstances title shows when being special circumstances generation on ground control person seat.
Described parameter characterization is characterized by the data characteristics of special circumstances. Common special circumstances and feature thereof are as follows: first, when entering complex state, generally have bigger lateral acceleration, have the bigger angle of attack and the swing of less speed and transverse direction during stall; Second, during substantial deviation course line, there is driftage from relatively big and height these features relatively big with predetermined altitude deviation; 3rd, controlled when contacting to earth, generally there are relatively low radio altitude, lasting height reduction and higher speed; 4th, when running into thunderstorm or wind shear, there are the angle of attack of change, overload and navigation attitude feature suddenly; 5th, during important AEF airborne equipment failure, the parameter of equipment can lose dependency; 6th, during pilot's some lost consciousness, the height of aircraft, speed, attitude can continuous random swing, and height velocity change with electromotor occupation mode substantially and normal time be not inconsistent. Special circumstances quantity can expand in the way of software arrangements. Utilize these features can fly which kind of special circumstances is real-time judge in the data stream that ginseng produces be in lasting. Typical characteristic parameter and combination thereof are in Table 1:
Table 1 special circumstances characteristic parameter table
Special circumstances numbering refers to be sent by radio station, and for showing the numerical value of which kind of special circumstances, ground installation demodulates this numbering can provide the special circumstances title of generation. Complex state is 01, and driftage is 02, and controlled contacting to earth is 03, and vile weather is 04, and equipment fault is 05, and anergy is 06.
2. machine works:
Machine works and refers to according to the information that preparation work provides, by machine flies ginseng analytical data stream, it is judged that special circumstances are handled radio station commander earthward after occurring and sent the process of special circumstances problem. Fly to join while receiving data stream, send data and flow in Embedded specialist system, specialist system real time scan is current and historical data, when data meet special circumstances matching characteristic, then activate the electrical switch in the harvester flying ginseng, send information by the method for the detachable key switch signal ground in the speech radio station controlled.
First current wireless electricity keyed information is obtained, when confirming not press, connect 1 second, continuously transmit, represent that 1 represents 0 with i.e. non-radiating signal of not giving orders or instructions with i.e. radiation signal of giving orders or instructions, (representative value is 10ms to time slot 10 milliseconds, this parameter can be adjusted according to radio station service behaviour) sending action, representing to have information to issue, include ground in this time-space domain and all can receive this voice signal, commander seat demonstrates " special circumstances application " simultaneously, now can be sent instruction " mourning in silence " by commander, prevent now just having radio station radiation effect special circumstances content to issue, after two seconds, fly whether ginseng controls radio keying signal ground connection, continuously transmit and represent that 1 represents 0 with blank signal with radiation signal, time slot 0.01 second comprise plane No., the continuous data stream of special circumstances number and check bit,For preventing the situation owing to the signals such as lucky communication channel is occupied when having multi-aircraft special circumstances occur or special circumstances occur in the air interfere simultaneously, after issuing first, automatically according to " binary system back off algorithm " method after collision detection in Transmission Control Protocol, again select a good opportunity transmission, it is ensured that will not be influenced each other. After again sending, dispose complete by giving tacit consent to this kind of special feelings, no longer judged, it is prevented that long lasting effect dialogue. If there are multiple special feelings simultaneously, then the result order judged according to specialist system, send successively.
3. ground handling:
Ground handling refers to that land station receiver demodulates the process of issued special circumstances. in land station receives, the time series of the radio radiation signal received is calculated, if finding to have the radiation whether regular discontinuous signal of time slot units with fixing duration, detection software is then excited to show special circumstances circular application to commander seat, after commander sends the order of " radio listening silence ", allow out by channel, special circumstances issuing process is completed by flying ginseng control detachable key switch, now land station detection software is according to the information whether radiated, translate aircraft number, special circumstances number, and the suggestion flow process of emergency procedure is shown on commander seat, for commander's reference. afterwards, commander links up with pilot in time according to special circumstances number and suggestion, it is provided that correctly command timely.
Manual mode works:
If pilot feels that aircraft is in special circumstances state, or time other need to report earthward, manual mode can be adopted to work. Fly ginseng data flow characteristics not by criterion identification time, flying ginseng will not report automatically. But pilot feels then to utilize artificial transmission state of connecting to release news by the aircraft state being necessary to transmit earthward now. Method of accessing is that verbal report commander " to send data ", until commander send " mourning in silence " order make channel concede after, the pilot of special circumstances aircraft manually continuously the give orders or instructions mode of button 3 times of pressing notify to fly ginseng, because this continuous pressing mode can not use radio station to occur when giving orders or instructions normal, therefore normal use can be substantially distinguished from. Afterwards, flying to join and rise according to when receiving transmission order, sending current time is the initial significant data of 10 seconds in history. Significant data includes 8, course, pitching 8, inclination 8, height 12, speed 12, rotating speed 7, row temperature 7, each 8 these 10 numbers of method/axle/lateral overload, takes into account 4 bit check codes totally 90. Send a number of seconds according to needing 90 time slots consuming time that is 900 milliseconds (for 10ms time slot).
Advantage of the present invention and effect are in that:
Advantage of the invention is that and can automatically aircraft overall data be carried out comprehensive, comprehensive, continuous print monitoring, this is to be different from the general key character monitoring system, this feature advantage on the aircraft that avionics system falls behind relatively becomes apparent from, can as the condition monitoring center of full machine. Meanwhile, embedded special circumstances judge module can real time scan aircraft current state, and special circumstances occur, development process in automatically report earthward. It addition, the Speech Communication function relying on aircraft self to have, not needing to increase private station or gondola, good economy performance, exploitativeness is strong, and outfield repacking is simple.
[accompanying drawing explanation]
Fig. 1 is workflow diagram on System Computer.
Fig. 2 is system ground workflow diagram.
Fig. 3 is manual work mode flow chart.
Fig. 4 sends state electrical switch work schedule automatically.
Fig. 5 is the electrical switch work schedule manually sending data.
[detailed description of the invention]
The specific embodiment 1 of automated manner is as follows: enter complex state.
Step one, system Real-time Collection and judge in aircraft current aircraft lateral acceleration, the angle of attack and yawrate numerical value and expert system rule storehouse set go off course from difference;
Step 2, when aircraft lateral acceleration absolute value is more than 5m/s2, and the angle of attack more than 25 ° or yawrate absolute value more than 20 °/s time, system according to the 1st, expert system rule storehouse judge aircraft enter complex state, occur enter complex state special feelings;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs the special feelings entering complex state, then this airplane of ground control, make action according to the essential of exercise breaking away from complex state, it is prevented that complex state continues to worsen.
The specific embodiment 2 of automated manner is as follows: substantial deviation course line.
Step one, system Real-time Collection and judge aircraft currently go off course from expert system rule storehouse in set go off course from difference;
Step 2, when aircraft yaw from more than regulation driftage from, for instance during airline operation driftage from during more than 100km, system is according to the 2nd, the expert system rule storehouse special feelings judging aircraft generation substantial deviation course line;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs substantial deviation course line, then find the particular location of aircraft according to the equipment such as secondary radar, surveillance radar, notify this airplane, or other aircraft in notice formation, determine whether what state.
The specific embodiment 3 of automated manner is as follows: controlled contact to earth.
Step one, system Real-time Collection and judge the current radio altitude of aircraft, indicated airspeed and adjustable height, and the difference of the radio altitude of setting, indicated airspeed and rising or falling speed in expert system rule storehouse;
Step 2, when aircraft radio height is less than 500m, rate of descent is more than 20m/s, and when speed is more than 400km/h, according to the 3rd, expert system rule storehouse, system judges that the controlled special feelings contacted to earth occur aircraft;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs the controlled special feelings contacted to earth, then command rapidly this airplane, notes checking height, reduces rapidly rate of descent, it is prevented that relative altitude reduces further causes danger.
The specific embodiment 4 of automated manner is as follows: extreme weather.
Step one, system Real-time Collection and judge the current control stick variable quantity of aircraft, indicated airspeed, normal g-load, roll angle speed, and the control stick variable quantity of setting, indicated airspeed, normal g-load, roll angle speed difference in expert system rule storehouse;
Step 2, when aircraft control stick vertical and horizontal variable quantity less than 3mm when, the absolute value of aircraft indicated airspeed change is more than 20m/s, and load factor rate is more than 5m/s simultaneously2, or roll angle speed absolute value is more than 20 °/s, time, system is according to the 4th, the expert system rule storehouse special feelings judging aircraft generation extreme weather;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs the special feelings of extreme weather, then command rapidly this airplane, notes checking height, attitude, and notify that in spatial domain, other aircrafts note checking and dodging, and reduce contingent danger further at once.
The specific embodiment 5 of automated manner is as follows: important AEF airborne equipment failure.
Step one, system Real-time Collection and judge the fault alarm signal of the current engine failure of aircraft, power failure, control failure, hydraulic system fault, aviation attitude system and atmospheric engine system;
Step 2, when occur in these 5 kinds of situations of engine failure, power failure, control failure, hydraulic system fault, aviation attitude system and the atmospheric engine system failure any one time, system according to the 5th, expert system rule storehouse judge aircraft occur important AEF airborne equipment failure special feelings;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs the special feelings of important AEF airborne equipment failure, then this airplane is commanded rapidly, note checking height, attitude, and perform operation according to the managing special situation scheme of regulation, and notify that in spatial domain, other aircrafts note checking and dodging, and reduce contingent danger further at once.
The specific embodiment 6 of automated manner is as follows: pilot's some lost is realized.
Step one, system Real-time Collection and the difference judged between vector angle and the prearranged heading that aircraft is current, pressure altitude and the difference of predetermined altitude, throttle position;
Step 2, when occur that throttle position is motionless and course swing amount more than 3 °, height oscillating quantity more than 200m, when throttle position variable quantity is less than 1 °, according to the 6th, expert system rule storehouse, system judges that the special feelings of pilot's some lost consciousness occur aircraft;
Step 3, whether systems inspection now radio button of giving orders or instructions is pressed, if pressing, it was shown that radio service, in telephone condition, waits and terminates telephone condition, goes to step 4 after terminating when giving orders or instructions;
Step 4, automatically electrical switch is discontinuously connected, make radio with gap 10ms, the outside radiation signal of mode of continuous 1 second, ground installation and other aircraft aerial all can receive this signal, and wherein, other aircraft pilot can hear rapid interrupted noise in the air, and ground installation can detect this signal, commander seat shows aircraft special feelings occur;
Step 5, commander seat computer, according to this situation, sends the instruction of " all aircraft radios are mourned in silence " in this by speech, makes channel be in idle condition;
, there is special feelings aircraft after sending special feelings application two seconds in step 6, starts first time and automatically send and include plane No., special feelings number, check bit totally 14 information;
Step 7, after first time sends, according to back off algorithm, selects a good opportunity and again sends;
Step 8, according to 14 information, ground control's platform can distinguish which airplane there occurs the special feelings of important AEF airborne equipment failure, then command rapidly this airplane, note check height, attitude, and coordinate other aircrafts spatial domain in note inspection and dodge.
The specific embodiment of manual mode is as follows:
Step one, when pilot finds to be necessary report ground control person's aircraft basic condition, applies for the speech of " transmission essential information " to commander;
Step 2, ground control person according to circumstances sends the instruction of this field " all aircrafts are mourned in silence ";
Step 3, pilot quickly presses three radio keying buttons;
Step 4, after flying to engage in an inspection and measuring three quick push action, controls electrical switch and sends 10ms time slot, after continuing the transmission application signal of 1 second, and the aircraft important information of 10 seconds before starting to continuously transmit now;
Step 4, ground installation is according to the application signal continuing 1 second, determine demodulator probe position, and according to follow-up numerical value, the aircraft important information continuing 10 seconds is received successively and shows, understand aircraft basic condition for ground control person, command this pilot to perform countermeasure afterwards as the case may be.
Claims (8)
1. the method passing through speech radio station real-time Transmission airplane emergency state, it is characterised in that: automated manner includes working on preparation work, machine and three parts of ground handling;
Preparation work:
Preparation work indicates really to be numbered by the special circumstances title of monitor in real time, parameter characterization feature and special circumstances, it addition, also need the standard disposal process arranged corresponding to these special circumstances, in order to commander's reference;
Machine works:
Machine works and refers to according to the information that preparation work provides, by machine flies ginseng analytical data stream, it is judged that special circumstances are handled radio station commander earthward after occurring and sent the process of special circumstances problem; Fly to join while receiving data stream, send data and flow in Embedded specialist system, specialist system real time scan is current and historical data, when data meet special circumstances matching characteristic, then activate the electrical switch in the harvester flying ginseng, send information by the method for the detachable key switch signal ground in the speech radio station controlled;
Ground handling:
Ground handling refers to that land station receiver demodulates the process of issued special circumstances, in land station receives, the time series of the radio radiation signal received is calculated, if finding to have the radiation whether regular discontinuous signal of time slot units with fixing duration, detection software is then excited to show special circumstances circular application to commander seat, after commander sends the order of " radio listening silence ", allow out by channel, special circumstances issuing process is completed by flying ginseng control detachable key switch, now land station detection software is according to the information whether radiated, translate aircraft number, special circumstances number, and the suggestion flow process of emergency procedure is shown on commander seat, for commander's reference, afterwards, commander links up with pilot in time according to special circumstances number and suggestion, it is provided that correctly command timely.
2. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 1, it is characterised in that: the prompting exercise question that described special circumstances title shows when being special circumstances generation on ground control person seat.
3. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 1, it is characterised in that: described parameter characterization is characterized by the data characteristics of special circumstances.
4. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 1, it is characterized in that: special circumstances and feature thereof are as follows: first, when entering complex state, there is bigger lateral acceleration, during stall, have the bigger angle of attack and the swing of less speed and transverse direction; Second, during substantial deviation course line, there is driftage from relatively big and height these features relatively big with predetermined altitude deviation; 3rd, controlled when contacting to earth, there are relatively low radio altitude, lasting height reduction and higher speed; 4th, when running into thunderstorm or wind shear, there are the angle of attack of change, overload and navigation attitude feature suddenly; 5th, during important AEF airborne equipment failure, the parameter of equipment can lose dependency; 6th, during pilot's some lost consciousness, the height of aircraft, speed, attitude can continuous random swing, and height velocity change with electromotor occupation mode substantially and normal time be not inconsistent; Special circumstances quantity expands in the way of software arrangements; These features are utilized to fly which kind of special circumstances is real-time judge in the data stream that ginseng produces be in lasting.
5. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 1, it is characterised in that: typical characteristic parameter and combination thereof are in Table 1:
Table 1 special circumstances characteristic parameter table
6. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 4 or 5, it is characterized in that: special circumstances numbering refers to be sent by radio station, for showing the numerical value of which kind of special circumstances, ground installation demodulates this numbering can provide the special circumstances title of generation; Complex state is 01, and driftage is 02, and controlled contacting to earth is 03, and vile weather is 04, and equipment fault is 05, and anergy is 06.
7. a kind of method by speech radio station real-time Transmission airplane emergency state according to claim 1, it is characterized in that: in working on machine, first current wireless electricity keyed information is obtained, when confirming not press, connect 1 second, continuously transmit, represent that 1 represents 0 with i.e. non-radiating signal of not giving orders or instructions with i.e. radiation signal of giving orders or instructions, the sending action that time slot is 10 milliseconds, representing to have information to issue, include ground in this time-space domain and all can receive this voice signal, commander seat demonstrates " special circumstances application " simultaneously, now sent instruction " mourning in silence " by commander, prevent now just having radio station radiation effect special circumstances content to issue, after two seconds, fly whether ginseng controls radio keying signal ground connection, continuously transmit and represent that 1 represents 0 with blank signal with radiation signal, time slot 0.01 second comprise plane No., the continuous data stream of special circumstances number and check bit, for preventing the situation owing to lucky communication channel occupied signal when having multi-aircraft special circumstances occur or special circumstances occur in the air interferes simultaneously, after issuing first, automatically according to " binary system back off algorithm " method after collision detection in Transmission Control Protocol, again select a good opportunity transmission, it is ensured that will not be influenced each other, after again sending, dispose complete by giving tacit consent to this kind of special feelings, no longer judged, it is prevented that long lasting effect dialogue, if there are multiple special feelings simultaneously, then the result order judged according to specialist system, send successively.
8. the method passing through speech radio station real-time Transmission airplane emergency state, it is characterised in that: manual mode is: if pilot feels that aircraft is in special circumstances state, or time other need to report earthward, adopts manual mode work;Fly ginseng data flow characteristics not by criterion identification time, flying ginseng will not report automatically; But pilot feels then to utilize artificial transmission state of connecting to release news by the aircraft state being necessary to transmit earthward now; Method of accessing is that verbal report commander " to send data ", until commander send " mourning in silence " order make channel concede after, the pilot of special circumstances aircraft manually continuously the give orders or instructions mode of button 3 times of pressing notify to fly ginseng, because this continuous pressing mode can not use radio station to occur when giving orders or instructions normal, it is different from normal use; Afterwards, flying to join and rise according to when receiving transmission order, sending current time is the initial significant data of 10 seconds in history; Significant data includes 8, course, pitching 8, inclination 8, height 12, speed 12, rotating speed 7, row temperature 7, each 8 these 10 numbers of method/axle/lateral overload, takes into account 4 bit check codes totally 90; Send a number of seconds according to needing 90 time slots consuming time that is 900 milliseconds.
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