CN107517076B - Event-driven data link uplink triggering device and triggering method thereof - Google Patents

Abstract

The invention discloses a data link uplink triggering device based on event driving and a triggering method thereof, wherein the device comprises the following steps: the airplane effective number checking module is used for checking an effective airplane number; the database constraint module is used for compiling database constraints; the template definition module is used for predefining an uplink trigger instruction template; the uplink instruction generating module is used for implanting the target airplane number into the uplink triggering instruction template to generate an uplink triggering instruction and caching the uplink triggering instruction into an uplink message buffer pool; the invention can ensure the randomness, the real-time performance and the accuracy of the operation requirements, realize that the ground application system actively sends an uplink trigger instruction according to the downlink information of the airplane, obtain more flight parameters, judge the state of the airplane instant system and accurately position the faults of the airplane; the aircraft can also be triggered to generate required data or generate corresponding cockpit warning, the requirement that a ground engineering system acquires more aircraft real-time state parameters under emergency conditions is met, or the occurrence of potential emergency states of a warning unit is warned, and active conditions are created for guaranteeing flight safety.

Description

Event-driven data link uplink triggering device and triggering method thereof

Technical Field

The invention belongs to the technology of aviation application engineering, and particularly relates to an event-driven data link uplink triggering device and a triggering method thereof, which are mainly applied to the field of AOC.

Background

The civil aviation air-ground data link (hereinafter referred to as "data link") is a system for realizing data information exchange between an aviation aircraft and a ground information management system by adopting an ATN (air telecommunication network) wireless network communication technology and an application protocol. The system uses the S mode of VHF (very high frequency communication), SATCOM (maritime/iridium satellite communication), HF (high frequency communication) and SSR (secondary surveillance radar) as a data link transmission medium to automatically transmit information between the airplane and a ground system, effectively connects the airplane with ground personnel and an air traffic control automation system, can effectively reduce flight operating cost, improve flight operating efficiency, find flight faults in advance and guarantee flight safety. Particularly, in China, with the rapid development of the civil aviation transportation industry, the civil aviation communication traffic is greatly increased, but at present, the operation control department of an airline company still realizes voice communication with a flight unit mainly by means of a voice communication link of an air traffic control. The defects of voice communication channel congestion, human factor interference and the like are increasingly prominent, and the operation of establishing uplink communication is complex, so that the defects often become the bottleneck of establishing active voice communication between an operation control department, a maintenance control department and an aircraft set, and the flight safety and the flight schedule are directly influenced. In recent years, ground-air data communication systems are widely applied to the field of civil aviation air-ground communication due to the characteristics of high transmission rate, strong anti-interference capability, low bit error rate, high reliability, strong operability and the like.

The ACARS (aircraft Communication Addressing and Reporting system) -aircraft Communication Addressing and Reporting system is a mature air-ground real-time digital Communication link, and data Communication infrastructure and paid data retransmission service are borne by data service providers, at present, the expanded main application fields of the ACARS system comprise AOC and ATC, the former mainly faces the application fields which can be autonomously controlled by airlines, such as acquisition of aircraft position information, acquisition and pushing of flight information, automatic downloading of flight fault information, acquisition of aircraft engine states and aircraft performance parameters, unit short message two-way Communication and other autonomous applications which can be developed by airlines, and the latter mainly faces the fields of air traffic control and public service, such as take-off digital release (department Clearance), ocean digital release (ocean information Clearance), Aviation Terminal Information Service (ATIS), automatic correlation monitoring (ADS), controller and driver data chain control (CPD L) and the like.

The ACARS system mainly comprises an airborne equipment system, a ground-air data communication network and a ground application system. The airborne equipment system takes a communication management Component (CMU) (or an equivalent functional component) as a core component and comprises a Flight Management System (FMS), a central maintenance system (CMCS), an aircraft state monitoring system (ACMS), an S mode responder, a High Frequency (HF)/Very High Frequency (VHF)/satellite communication System (SATCOM), an airborne printer, a unit display system (MCDU) and the like; in the air-ground data communication network, the ATN network is composed of two independent data providers (DSP) of SITA and ARINC, and a total of 10 data operators are mainly used, and covers the aeronautical telecommunication network including south and north pole areas (using HF communication technology, poor signal) and even every corner of the world; in a ground application system in the AOC application field, an airline company uses data link gateway access equipment provided by a DSP to be in butt joint with an ATN network, obtains flight data of the airline company in real time, and interacts with airplane two-way information through background application integration.

However, the ACARS and the communication technology thereof mainly solve the problem of real-time interaction between flight data and a ground system, and for an AOC ground application system, a method of "actively sending an uplink trigger instruction according to aircraft downlink information" is not provided, and currently, ground personnel can only temporarily perform manual data analysis according to the aircraft downlink information and then send an uplink instruction to a target aircraft by using a corresponding software tool, so that the method has the disadvantages of operational hysteresis, artificial errors/errors, omission and the like, and cannot ensure the randomness, the real-time performance and the accuracy of operation requirements.

In addition, in an AOC aircraft maintenance application system, in a general situation, the ground system also needs to actively send an uplink trigger instruction according to downlink information of the aircraft so as to obtain more flight parameters, thereby determining an instant system state of the aircraft so as to accurately locate a fault of the aircraft.

Disclosure of Invention

The invention provides a real-time and accurate data link uplink trigger device based on event driving, which actively sends an uplink trigger instruction according to downlink information of an airplane so as to obtain more flight parameters, thereby judging the instant system state of the airplane, accurately positioning the failure of the airplane and creating an active condition for guaranteeing flight safety.

The first object of the invention is achieved by the following technical measures: an event-driven data link uplink triggering device, which is embedded in a decoder of an AOC ground application system for decoding downlink messages and is in a decoder master process, is characterized in that: the data chain uplink trigger device based on event driving comprises:

the airplane effective number checking module is used for checking an effective airplane number;

the database constraint module is used for compiling database constraints;

the template definition module is used for predefining an uplink trigger instruction template;

the uplink instruction generating module is used for implanting a target airplane number into the uplink triggering instruction template to generate an uplink triggering instruction, caching the uplink triggering instruction into the uplink message buffer pool, namely pushing the uplink triggering instruction to the airline data link gateway interface, and then sending the uplink triggering instruction to the target airplane by the airline data link gateway interface;

the aircraft effective number checking module, the database constraint module and the uplink instruction generating module are sequentially connected, and the template defining module is connected with the uplink instruction generating module; the aircraft valid number checking module receives decoded information of a downlink message of a target aircraft as a condition parameter, if the condition parameter is valid, the target aircraft is a valid aircraft number, the decoded information is output to the database constraint module, and if the condition parameter is invalid, the target aircraft is an invalid aircraft number and returns to the main process of the decoder; the database constraint module compiles the database constraint, if the database constraint does not inhibit the decoded information, the uplink trigger instruction is executed, and if the database constraint inhibits the decoded information, the uplink trigger instruction is not executed, and the uplink trigger instruction is returned to the main process of the decoder; the template definition module predefines an uplink trigger instruction template, the uplink instruction generation module implants a target airplane number into the uplink trigger instruction template to generate an uplink trigger instruction, otherwise (for example, due to IO and network abnormality, the uplink trigger instruction cannot be generated), the uplink trigger instruction is returned to the decoder main process, the generated uplink trigger instruction is cached in an uplink message buffer pool, namely, the uplink trigger instruction is pushed to an airline data chain gateway interface, and then the uplink trigger instruction is sent to the target airplane by the airline data chain gateway interface.

Compared with the method that the existing ground personnel can only temporarily perform manual data analysis according to the descending information of the airplane and then send an ascending instruction to the target airplane by using a corresponding software tool, the method has the advantages of ensuring the randomness, the real-time performance and the accuracy of the operation requirement, and can realize that the AOC ground application system can actively send an ascending trigger instruction according to the descending ACARS information of the airplane so as to obtain more flight parameters, judge the real-time system state of the airplane and accurately position the fault of the airplane; the invention can also trigger the airplane to generate (transmit) required data or generate corresponding cockpit warning, thereby meeting the requirement that a ground engineering system acquires more airplane real-time state parameters under emergency conditions or warning the occurrence of the potential emergency state of a unit, and creating active conditions for guaranteeing flight safety.

The uplink trigger instruction is used for dynamically changing the broadcast frequency of aircraft position information, triggering the state information downlink of ACMS (aircraft state monitoring system) according to the downlink fault code or fault keyword of the aircraft, triggering the EICAS (engine indicator and unit warning system) of the aircraft to maintain the page information downlink according to the downlink fault code or fault keyword of the aircraft, and automatically triggering the configuration parameter downlink of an airborne information system in the flight process or automatically uplink the unit warning information according to the flight overload state parameter of the ACMS in the downlink of the aircraft.

The decoder main process of the invention packages each downlink message into an object structure to become a downlink message object, wherein the downlink message object comprises 5 attributes of a message ID, a message timestamp, an airplane number, a flight number and a message content. The condition parameters are decoding table names (ACARS event names) and downlink message objects.

The aircraft valid number checking module checks by taking a decoding table name and a downlink message object as two condition parameters, returns to invalidity if one of the condition parameters is invalid, and returns to a main process of a decoder; if the two condition parameters are both effective, the decoding table name and the aircraft number attribute of the downlink message object are used as two input parameters, EDUT-ID (electronic device-identification) is used as a related one-to-one connection for an EDUT configuration list and an effective aircraft number list in the template definition module to obtain a result set, if the number of items in the result set is greater than 0, the target aircraft number can trigger certain defined EDUT configuration in the EDUT configuration list, and then the target aircraft is returned to be effective, namely the target aircraft is the effective aircraft number; otherwise, returning to be invalid, namely the target airplane is an invalid airplane number.

The EDUT configuration list and the valid aircraft number list are two configuration lists of the background of the invention, and are two background data generated after a system administrator uses the human-computer interface configuration system shown in fig. 8 and 9. The uplink instruction generation module calls the two background data when generating the uplink trigger instruction.

EDUT configuration manifest: the method mainly comprises the steps that a determined trigger condition (EDUT configuration) is formed by a template, a database constraint and a valid airplane number, the EDUT configuration list is formed by a plurality of trigger conditions, and each trigger condition has a unique number, namely EDUT-ID.

For the EDUT configuration list, each entry in the list has a group of valid airplane numbers (multiple airplanes), and the target airplane number is the airplane number determined by the uplink trigger instruction last, that is, to which airplane the instruction is to be sent, and the target airplane number must be in the valid airplane number list.

The database constraint module takes a decoding table name, a message ID attribute and an airplane number attribute of a downlink message object as input conditions of a compiling process of the database constraint module, takes the decoding table name and the airplane number attribute of the downlink message object as two input parameters, and performs one-to-one connection on an EDUT configuration list and an effective airplane number list by taking EDUT-ID as correlation to obtain a result set, and executes each record in the result set circularly; otherwise, the uplink trigger instruction is not executed, and the decoder returns to the main process.

Each downlink message is understood as a unique object, i.e. a downlink message object. In high-level computer languages, packaging complex variables as "objects" is a common technical approach. Each ACARS message has many different attributes, and these attributes are packaged together to form a reusable whole, that is, the downlink message object (if the uplink message, the objectification process may also be performed). The downlink message object is objectified in one time in the downlink message monitoring process of the decoder and is repeatedly used for many times in the main process. If the downlink message is not objectified, IO operation is needed each time the main process accesses the downlink message, a large amount of IO resources are consumed in the processing process of a large amount of downlink messages, all IO operations are converted into memory operations after objectification, IO overhead is greatly reduced, and system processing speed and efficiency are greatly improved.

The downlink message object is determined by a message ID or RAW _ ID, and the RAW _ ID is a unique identifier of the downlink message. Each downlink message in the decoder is unique, and a unique identification number, namely RAW _ ID, is automatically allocated to each message by the decoder downlink message monitoring process, and the RAW _ ID is composed of a positive integer with the length of 9 bits, namely the maximum value is 9999999. According to the current statistics, about 200000 ACARS downlink messages exist in 500 airlines each day, and it takes about 13 years for RAW _ ID to reach the maximum value. I.e., the "life cycle" of the system is about 10 years, the RAW _ ID will start from 1 at the beginning of the next life cycle, cycling through this cycle.

The template definition module comprises a trigger event definition submodule, a definition modification type submodule, a template editing submodule, a template list submodule and an uplink trigger start-stop submodule which are connected in sequence, wherein the trigger event definition submodule is used for defining a trigger event (namely a decoding table name and determining which event the template is associated with), and the trigger event is an event for starting an uplink trigger instruction to send when a decoder receives a downlink message of a specific type; the modification type defining sub-module defines 4 modification types, namely triggering a new message generated by the airplane in real time, triggering a message generated by the airplane finally, triggering a message generated by a unit/man and triggering a brief report of the current flight segment stored on an airborne nonvolatile storage device; the template editing submodule provides a basic coding format of an uplink triggering instruction, an embedded ATN network control symbol and an uplink triggering instruction reserved word or macro replacement symbol; the template list submodule is used for a system administrator to operate and finish the binding of a trigger event, a change type and a template, and setting an uplink trigger start-stop logic, binding an effective airplane number and setting database constraint; and the system administrator can operate to revise the uplink trigger instruction so as to realize more refined uplink trigger instruction configuration; the uplink trigger start-stop sub-module is used for starting an event, namely, the decoder executes the transmission of an uplink trigger instruction when receiving the Nth event of the current flight; when N is 0, this condition is bypassed; this condition is bypassed when the maximum number of times the decoder sends an up trigger instruction to the current flight is 0.

All upstream trigger instructions must be predefined, which is considered for two reasons:

⑴ the generation process of the uplink trigger instruction is complex, and the manual input process is easy to generate errors, resulting in uplink failure;

⑵ manual entry may also enter erroneous commands, resulting in failure to trigger the desired downstream information.

The template of the uplink triggering instruction is predefined by a qualified system administrator in the background, and the front-end application sends the correct uplink instruction by selecting a proper template, so that the two links which are easy to generate errors are avoided.

The template definition module can compile different templates according to response parameter specifications of different types of airborne equipment, embed airborne equipment response parameters into the templates, trigger downlink message sending containing different parameters, change existing ACARS message sending logic of an airplane, or cause cockpit effects with different effects (such as cockpit clock alarm, or cockpit alarm lamp on, or text prompt information displayed on a cockpit display (MCDU), or text content output on a cockpit printer) so as to remind the aircrew of the occurrence of potential danger, so that the aircrew can make preventive evasion, and active conditions are created for guaranteeing flight safety.

The uplink instruction generating module comprises a template reading submodule, a template analyzing submodule and an uplink instruction output submodule which are sequentially connected, wherein the template reading submodule is used for reading an uplink trigger instruction template in EDUT (electronic device interconnect express) example configuration; the template analysis submodule is used for analyzing the uplink trigger instruction template to generate a complete uplink trigger instruction; and the uplink instruction output submodule writes the uplink trigger instruction into an uplink message buffer pool, namely outputs the uplink trigger instruction to an airline data link gateway interface.

And respectively obtaining result sets in the aircraft valid number checking module and the database constraint module, wherein the result sets are used as EDUT (electronic data interchange) instance configuration pools.

The uplink instruction generating module also comprises an airplane effective number binding submodule, a log maintaining submodule and an instance state maintaining submodule which are sequentially connected, wherein the airplane effective number binding submodule is used for distributing an effective airplane number to each uplink triggering instruction; the log maintenance submodule is used for recording the execution result of each uplink trigger instruction, namely whether each downlink message triggers the uplink trigger instruction or not, or which uplink trigger instruction is triggered by which downlink message, the triggering time, the triggering times, the triggered target airplane number and the like; the instance state maintenance submodule is used for maintaining the triggering process and the current triggering state of each uplink triggering instruction, because one uplink instruction is not necessarily executed at one time, and the instance state maintenance submodule supervises the execution process of each uplink instruction until the execution of each uplink instruction is finished. The downlink messages for multiple airplanes may satisfy triggering conditions of multiple uplink triggering instructions, and execution cycles of each uplink triggering instruction are different (especially when multiple times of execution are required), the instance state maintenance module allocates an instance to each uplink triggering instruction in execution, and multiple instances form a pool concept in the background, that is, an instance pool. The state of each instance in the instance pool is updated with the execution state of the uplink trigger instruction allocated to the instance pool, namely, when the trigger is executed, whether the trigger is suppressed or not, the current trigger is the first trigger, the rest triggers are left, the maximum triggers can be executed and the like.

The second objective of the present invention is to provide a triggering method for the above-mentioned data link uplink triggering device based on event driving.

The second object of the invention is achieved by the following technical measures: a triggering method of the data link uplink triggering device based on event driving is characterized by specifically comprising the following steps:

⑴, receiving information of the decoder decoding the target airplane downlink message as a condition parameter, if the condition parameter is valid, the target airplane is a valid airplane number, if the condition parameter is invalid, the target airplane is an invalid airplane number, and returning to the decoder main process;

⑵ compiling database constraints, if the database constraints do not inhibit the decoded information, executing an uplink trigger instruction, if the database constraints inhibit the decoded information, not executing the uplink trigger instruction, and returning to the main process of the decoder;

⑶, implanting the target airplane number into a predefined uplink trigger instruction template to generate an uplink trigger instruction, otherwise, returning to the decoder main process, caching the generated uplink trigger instruction into an uplink message buffer pool, namely pushing the uplink trigger instruction to an airline data chain gateway interface, and then sending the uplink trigger instruction to the target airplane by the airline data chain gateway interface.

As a preferred embodiment of the present invention, in the step ⑴, the decoding table name and the downlink packet object are used as two condition parameters to be checked, if one of the input parameters is invalid, an invalid condition is returned, and a main process of the decoder is returned, if both the two input parameters are valid, the attribute of the aircraft number of the decoding table name and the downlink packet object is used as two input parameters, a one-to-one connection is made between the EDUT configuration list and the valid aircraft number list, which is associated with the EDUT-ID, to obtain a result set, if the number of entries in the result set is greater than 0, it is indicated that the target aircraft number can trigger a certain defined EDUT configuration in the EDUT configuration list, and a valid condition is returned, that is, the target aircraft is a valid aircraft number, otherwise, it is returned to be invalid, that is, that the target aircraft is an invalid aircraft number.

As a preferred embodiment of the present invention, in step ⑵, the decoding table name, the message ID attribute of the downlink message object, and the aircraft number attribute are used as input conditions of the compilation process, the decoding table name and the aircraft number attribute of the downlink message object are used as two input parameters, the EDUT configuration list and the valid aircraft number list are connected in a one-to-one manner with the EDUT-ID as a correlation, a result set is obtained, each record in the result set is executed in a loop, if the database constraint configured by the EDUT in the EDUT configuration list does not constrain the current downlink message object, the execution of the uplink trigger instruction is allowed, otherwise, the uplink trigger instruction is not executed, and the decoder main process is returned.

As a preferred embodiment of the present invention, in the step ⑶, the uplink trigger instruction template in the EDUT instance configuration is read, the uplink trigger instruction template is analyzed, a complete uplink trigger instruction is generated, and then the uplink trigger instruction is written into the uplink packet buffer pool, that is, the uplink trigger instruction is output to the airline data link gateway interface.

Compared with the prior art, the invention has the following remarkable effects:

⑴ compared with the existing method that ground personnel temporarily perform manual data analysis according to the information of descending of the airplane and then use corresponding software tools to send ascending instructions to the target airplane, the method has the advantages of ensuring the randomness, real-time performance and accuracy of operation requirements.

⑵ the invention can realize that AOC ground host system sends uplink trigger command according to airplane downlink ACARS information to obtain more flight parameters, and judge the airplane instant system state to accurately position the airplane fault, and can trigger the airplane to generate (transmit) the needed data, or generate corresponding cockpit warning, so as to meet the demand of ground engineering system to obtain more airplane real-time state parameters in emergency, or warn the occurrence of the potential emergency state of the unit, and create active conditions for ensuring flight safety.

⑶ the invention can dynamically change the broadcast frequency of the airplane position information, trigger the status information downlink of ACMS (airplane status monitoring system) according to the downlink fault code or fault keyword of the airplane, trigger the EICAS (engine indicator and unit warning system) of the airplane to maintain the page information downlink according to the downlink fault code or fault keyword of the airplane, automatically trigger the configuration parameter downlink of the airborne information system during the flight process or automatically uplink the unit warning information according to the downlink ACMS flight overload status parameter, etc.

⑷ the template definition module of the invention can compile different templates according to the response parameter specifications of different types of airborne equipment, embed the airborne equipment response parameters into it, or trigger the downlink message transmission containing different parameters, or change the existing ACARS message transmission logic of the airplane, or cause the cockpit effect of different effects (such as cockpit clock alarm, or cockpit alarm lamp on, or display text prompt information on cockpit display (MCDU), or output text content on cockpit printer), so as to remind the aircrew of the occurrence of potential danger, so that the aircrew can make preventive evasion, create active conditions for flight safety, and broaden the applicability and flexibility of the system.

⑸ the invention is embedded in the circular main process of the decoder and message pool, and has good encapsulation and portability without destroying the code structure of the main process of the decoder.

Drawings

The invention is described in further detail below with reference to the figures and the specific embodiments.

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

FIG. 2 is a block flow diagram of a decoder master process and an EDUT subprocess of the present invention;

FIG. 3 is a block flow diagram of the present invention for checking for a valid aircraft number;

FIG. 4 is a flow diagram of compiling database constraints in accordance with the present invention;

FIG. 5 is a human-machine interface for trigger event definition in accordance with the present invention;

FIG. 6 is a human-machine interface for modifying the type definition of the present invention;

FIG. 7 is a human-machine interface for template editing definitions of the present invention;

FIG. 8 is a human-machine interface of the template manifest definition of the present invention;

FIG. 8a is an uplink trigger start-stop logic interface according to the present invention;

FIG. 9 is a human-machine interface for configuring a valid aircraft number for a certain uplink trigger command according to the present invention;

FIG. 10 is a human-machine interface for configuring database constraints for certain uplink trigger instructions in accordance with the present invention;

FIG. 11 is a schematic diagram of a bi-directional data link of the present invention;

FIG. 12 is a decoder interface driven EDUT master trigger process;

FIG. 13 is a block diagram of an example state maintenance flow of the present invention;

FIG. 14 is a block diagram of a flow chart for performing an uplink trigger command transmission according to the present invention;

FIG. 15 is an interface for assigning local ATN node addresses in accordance with the present invention;

FIG. 16 is a distributed ground-to-ground transport priority code interface of the present invention;

FIG. 17 is a silence slot interface in accordance with the present invention;

FIG. 18 is a cockpit primary display system interface.

Detailed Description

Fig. 1 shows an event-driven data chain uplink trigger device according to the present invention, which is embedded in a decoder of an AOC terrestrial application system for downlink message decoding and is in a decoder host process, i.e., inserted into a cyclic host process of the decoder and a message pool, where the decoder is an essential device of any ACARS terrestrial data processing system, and a generic ACARS message decoding module is a basic function of the decoder.

The data chain uplink triggering device based on event driving comprises:

the airplane effective number checking module is used for checking an effective airplane number;

the database constraint module is used for compiling database constraints;

the template definition module is used for predefining an uplink trigger instruction template;

the uplink instruction generating module is used for implanting a target airplane number into the uplink triggering instruction template to generate an uplink triggering instruction, caching the uplink triggering instruction into the uplink message buffer pool, namely pushing the uplink triggering instruction to the airline data link gateway interface, and then sending the uplink triggering instruction to the target airplane by the airline data link gateway interface;

the aircraft effective number checking module, the database constraint module and the uplink instruction generating module are sequentially connected, the template defining module is independent of the EDUT process and is completed by intervention of an administrator, and the template defining module is connected with the uplink instruction generating module; the method comprises the following steps that an airplane valid number checking module receives decoded information of a target airplane downlink message as a condition parameter, if the condition parameter is valid, the target airplane is a valid airplane number, the decoded information is output to a database constraint module, and if the condition parameter is invalid, the target airplane is an invalid airplane number and returns to a decoder main process; the database constraint module compiles the database constraint, if the database constraint does not inhibit the decoded information, the uplink trigger instruction is executed, and if the database constraint inhibits the decoded information, the uplink trigger instruction is not executed, and the uplink trigger instruction is returned to the main process of the decoder; and the template definition module predefines an uplink trigger instruction template, the uplink instruction generation module implants the target airplane number into the uplink trigger instruction template to generate an uplink trigger instruction, otherwise, the uplink trigger instruction returns to the main process of the decoder, the generated uplink trigger instruction is cached in an uplink message buffer pool, namely the uplink trigger instruction is pushed to an airline data link gateway interface, and then the airline data link gateway interface sends the uplink trigger instruction to the target airplane.

The uplink trigger instruction is used for dynamically changing the broadcast frequency of the aircraft position information, triggering ACMS (aircraft state monitoring system) state information to downlink according to a downlink fault code or a fault keyword of the aircraft, triggering an EICAS (engine indicator and unit warning system) of the aircraft to maintain page number information to downlink according to the downlink fault code or the fault keyword of the aircraft, automatically triggering configuration parameters of an airborne information system to downlink in the flight process, or automatically uplink unit warning information according to a downlink ACMS flight overload state parameter of the aircraft.

The decoder main process continuously scans a downlink message pool pushed to a decoder server by the ACARS gateway, and during the period, the main process packages each downlink message into an object structure as a downlink message object, wherein the downlink message object comprises 5 attributes of a message ID, a message timestamp, an airplane number, a flight number and message content.

And outputting the name of the decoding table (namely the name of the ACARS event) after the sub-process of the ACARS message analysis. The condition parameters are a decoding table name and a downlink message object, and the decoding table name and the downlink message object are used as two condition parameters to be input into the airplane effective number checking module, namely, the airplane effective number checking module enters an EDUT subprocess.

As shown in fig. 2, in the EDUT subprocess, the tasks such as checking valid airplane numbers, compiling database constraints, starting the EDUT main trigger process, etc. are sequentially completed, and if any one of the tasks fails, the EDUT subprocess automatically returns to the decoder main process, otherwise, the EDUT main trigger process is entered.

As shown in fig. 3, the aircraft valid number checking module first checks with the decoding table name and the message object as two condition parameters, and returns an invalid state and returns to the decoder main process if one of the condition parameters is invalid; if the two condition parameters are both effective, the decoding table name and the aircraft number attribute of the message object are used as two input parameters, EDUT-ID-associated one-to-one connection is carried out on an EDUT configuration list and an effective aircraft number list in the template definition module to obtain a result set, if the number of items in the result set is greater than 0, the target aircraft number can trigger certain defined EDUT configuration in the EDUT configuration list, and then the target aircraft is returned to be effective, namely the target aircraft is the effective aircraft number; otherwise, returning to be invalid, namely the target airplane is an invalid airplane number.

As shown in fig. 4, the database constraint module takes the decoding table name, the message ID attribute of the downlink message object, and the aircraft number attribute as input conditions of the compilation process thereof, takes the decoding table name and the aircraft number attribute of the downlink message object as two input parameters, and performs one-to-one connection between the EDUT configuration list and the valid aircraft number list with the EDUT-ID as association to obtain a result set, and executes each record in the result set in a loop, if the database constraint configured by the EDUT in the EDUT configuration list does not suppress the current downlink message object, the uplink trigger instruction is allowed to be executed, and the database constraint module sends the message ID attribute, the timestamp attribute, the aircraft number attribute, the flight number attribute, and the decoding table name of the downlink message object to the uplink instruction generation module; otherwise, the uplink trigger instruction is not executed, and the decoder returns to the main process.

Each EDUT configuration has the possibility of having database constraints, and the content of each ACARS message is unique, so that a decoder (foreground) receives any ACARS message and must dynamically analyze the database constraints, save the analysis result in the database, and start the EDUT main triggering process as one of input conditions.

Performing, for each record loop in the result set: in order to adapt to polymorphism of ACARS downlink messages, namely that each ACARS downlink message can trigger a plurality of uplink trigger instructions, a database constraint macro replacement operation with a unique constraint condition (RAW _ ID, namely a message ID number) is introduced.

(1) And carrying out message ID macro replacement on the EDU _ DBPARMCONST _ CP L field of each record in the result set, and replacing { RAW _ ID } with the parameter value of the message ID.

(2) The contents of the EDU _ DBPARMCONST _ CP L field after macro replacement are stored in a database.

(3) And (4) inputting the contents of the EDU _ DBPARMCONST _ CP L field after macro replacement into a database for execution.

(4) The result EDU _ dbparam _ V L U after execution is saved in the database.

Finally, the following database constraint example table is formed:

(Table 1)

The EDU _ dbparconst _ V L U > is 1, which indicates that the database constraint in the EDUT configuration (determined by the EDU _ ID) does not inhibit the current downlink ACARS message (determined by the "message ID" or the RAW _ ID), i.e. the EDUT uplink triggering is allowed to be executed, otherwise, the EDUT uplink triggering is not executed.

As shown in fig. 5 to 10, the template definition module includes a trigger event definition sub-module, a definition modification sub-module, a template editing sub-module, a template list sub-module, and an uplink trigger start-stop sub-module, which are connected in sequence, where the trigger event definition sub-module is used to define a trigger event, and the trigger event is an event for starting an uplink trigger instruction to send when the decoder receives a downlink message of a specific type; the modification type defining sub-module defines 4 modification types, namely triggering a new message generated by the airplane in real time, triggering a message generated by the airplane finally, triggering a message generated by a unit/man and triggering a brief report of the current flight segment stored on the airborne nonvolatile storage equipment; the template editing submodule provides a basic coding format of an uplink triggering instruction, an embedded ATN network control symbol and an uplink triggering instruction reserved word or macro replacement symbol; the template list submodule is used for a system administrator to operate and finish the binding of a trigger event, a change type and a template, set an uplink trigger start-stop logic, bind an effective airplane number and set a database constraint, and the system administrator can operate and revise an uplink trigger instruction to realize more precise uplink trigger instruction configuration; the uplink trigger start-stop sub-module is used for starting an event, namely, the decoder executes the transmission of an uplink trigger instruction when receiving the Nth event of the current flight; when N is 0, this condition is bypassed; this condition is bypassed when the maximum number of times the decoder sends an up trigger instruction to the current flight is 0.

As shown in fig. 5, the specific working process of the trigger event definition sub-module is as follows:

the triggering Event (EDUT Event) refers to an Event that the decoder starts sending an EDUT uplink triggering instruction when receiving an ACARS message of a specific type, for example: when the decoder receives a downlink airplane fault message, an uplink trigger instruction is sent to trigger the downlink of some ACMS message; triggering an uplink trigger instruction to acquire EICAS maintenance page message downlink of the air entraining system when receiving a downlink takeoff message of the airplane; and sending an uplink trigger instruction to acquire the downlink message of the engine oil state when receiving the downlink position message of the airplane, and the like.

Because the airplane models managed by different airlines are different, the electronic devices are also different, the types and the structures of the ACARS messages may be different, and therefore the personalized requirements and the decoding capability of the decoder are also different. Therefore, the EDUT Event definition is open, all downlink messages and uplink trigger instructions of the airplane are not bound, a universal configuration interface is provided, and the configuration is automatically completed by an actual user according to the self requirement or the decoding capability of a decoder. The following provides samples defined by partial EDUT events:

(Table 2)

As shown in fig. 6, the specific working process of defining the modification type sub-module is as follows:

the generation or modification (modification) of an ACARS message in an onboard system is determined by various conditions, and EDUT sends different commands to obtain messages generated under different conditions. The present invention defines the following 4 conditions, called EDUTModifier (Change type).

(Table 3)

As shown in fig. 7 and 8, the specific working processes of the template editing sub-module and the template list sub-module are as follows:

the EDUT template provides a basic coding format of an uplink trigger instruction, an embedded ATN network control character and other necessary uplink instruction reserved words or macro replacement characters, wherein the EDUT template comprises the following components:

(Table 4)

Similar to the definition of the EDUT Event, the invention does not bind all downlink messages and uplink trigger instructions of the airplane, but provides a general configuration interface, and the configuration is autonomously completed by an actual user according to the self requirement or the decoding capability of a decoder.

A complete EDUT template sample and its explanation are given below:

(Table 5)

The defined partial EDUT template and its explanation are given below:

(Table 6)

The specific working process of the uplink trigger start-stop sub-module is as follows, as shown in fig. 8a, in the figure, Event StartOffset indicates that the decoder executes uplink instruction transmission after receiving the nth Event of the current flight EDUT Event; when N is 0, this condition is bypassed; maximum updates indicates that this condition is bypassed when the Maximum number of times the decoder sends an up trigger instruction to the current flight is 0.

For example, the following steps are carried out:

when Event Start Offset is 1 and Maximum Uplink is 1, the decoder starts to send the Uplink command when receiving the first EDUTevent, and the flight is sent at most once.

As shown in fig. 9, determination of valid aircraft number: not every upstream trigger instruction configuration fits all aircraft, and therefore every upstream trigger instruction has a trial active aircraft. The invention provides an independent configuration method for each uplink instruction effective airplane number.

As shown in FIG. 10, the database constraints are determined that each EDUT Event may have different parameter characteristics, each aircraft position Event may have a different flight number, a different altitude, a different speed, remaining fuel on board, and an arrival time, and the database constraints are used to distinguish different parameters of the same EDUT Event to send uplinks for different scenarios.

Such as:

SELECT DECODE(FLIGHTNO,NULL,0,DECODE(FLIGHTNO,'CZ0303',1,0))

FROM AOC_A83POS_B787WHERE RAW_ID＝{RAW_ID}

namely: when the flight number in the B787 airplane position report (AOC _ a83POS _ B787) event is valid and equal to CZ0303, the transmission of the up-line trigger instruction is performed.

Wherein: the word "RAW _ ID" indicates that the position report is the current position report received by the decoder. Words must be reserved. If this reserved word is missing, the system gives a warning with a wrong configuration.

The specific process of generating the uplink trigger instruction is as follows:

as shown in fig. 11, the EDUT upbound command is generated in the background in the form of a system service. The data of the airplane downlink is relayed to an airline data link gateway by a Data Service Provider (DSP) through a downlink data link and is transmitted to a downlink message buffer pool on a decoding server through a file push system which is safely connected with an enterprise intranet. And a Decoder master control servo program (Decoder) on the decoding server interacts with set parameters in the database server according to the attributes of the downlink messages to generate an EDUT uplink instruction, the EDUT uplink instruction is cached in an uplink message buffer pool in an uplink message form, and the EDUT uplink instruction is transmitted to an airline data link gateway through a file push system which is safely connected with an enterprise intranet and is uplinked to a target airplane through a DSP (digital signal processor).

As shown in fig. 12, the uplink instruction generating module includes an airplane valid number binding submodule, a log maintaining submodule, and an instance state maintaining submodule, which are connected in sequence, where the airplane valid number binding submodule is configured to allocate a valid airplane number to each uplink trigger instruction; the log maintenance submodule is used for recording the execution result of each uplink trigger instruction; and the instance state maintenance submodule is used for maintaining the triggering process and the current triggering state of each uplink triggering instruction.

The decoder interface drives the EDUT main trigger process: the process is completed in series by two subprocesses, a bulk decoder interface generates a main control program input parameter to an EDUT uplink instruction, the main control program completes the check of an aircraft effective number and a database constraint condition, namely uplink validity check, and the process is realized by an interface module in the decoder. And if the validity check fails, quitting, otherwise, entering a waste rock EDUT log maintenance process.

The decoder interface program packages the descending ACARS message into an object containing message ID, message timestamp, airplane number, flight number, message content and other attributes as a descending message object, and simultaneously sends the decoding table name to the EDUT ascending instruction generation main control program. The name of the decoding table is the same as the name of the event, and the generation (whether automatically or manually) of a downlink ACARS message on the airplane is triggered by a certain flight event; the decoder successfully parses an ACARS message, and the parsed data is stored in a database table, which means that the event triggering the message is established in the system.

The EDUT log is a database table with the aircraft number and the decoding table name as the only constraint conditions, and records the target aircraft number and the flight number of the uplink triggering instruction of the system, the downlink ACARS message decoding table name for starting to trigger the uplink triggering instruction, the message ID, the timestamp, the sending times of the uplink triggering instruction and the downlink ACARS message ID for currently triggering the uplink triggering instruction (the timestamp can be obtained by back-checking the decoding database).

In the EDUT log maintenance process, if the log record of the given aircraft number and the decoding table name does not exist, a new log record is created in the log, and the attributes are bound; and if the EDUT event exists, updating the attribute, and marking the current trigger state identifier (namely the EDUT event executed for the first time on the current flight or the EDUT event repeatedly executed on the current flight). The newly created trigger (2) or updated trigger (1) log record is used as an input condition to start the EDUT instance state maintenance process.

As shown in FIG. 13, the EDUT instance state maintenance process is implemented by an EDUT instance state maintenance machine (hereinafter instance maintenance machine) subroutine. And the instance maintenance machine executes each record which meets the message condition in the EDUT configuration list: judging according to the current trigger state identifier (the identifier gives out whether the EDUT configuration is allowed to be executed for multiple times on the same flight class), and if the EDUT configuration is executed for the first time, directly executing the sending of an uplink trigger instruction; otherwise, the system checks the uplink threshold suppression logic, if the uplink is not suppressed, the counter +1 is triggered after the uplink trigger instruction is sent, otherwise, the uplink trigger instruction is not sent.

And (3) uplink threshold suppression: the uplink threshold suppression logic takes into account that the following conditions are met:

(1) upstream Start stop logic check

The downlink ACARS EVENT counter (p _ EVT _ COUNT) of the current flight must be greater than or equal to the offset number +1 set by the system (i.e., i _ EVENT _ start _ ffset +1, when i _ EVENT _ start _ ffset is 0, there is no offset limit), i.e., the system may not send an uplink trigger command until the ith _ EVENT _ start _ ACARS message is received.

(2) Trigger upper limit number check

If the executed UP-stream trigger reaches the maximum trigger number (i _ MAX _ UP L INK) set by the system, the system stops triggering the current flight.

(3) Database constraint checking

The database constraint check procedure returns that the parameter ii _ EDU _ DBPARMCONST _ V L U must be greater than or equal to 1 before the system can send an upstream trigger command.

When the three conditions are simultaneously logical true, the system executes the sending of the uplink trigger instruction, namely:

(Table 7)

Otherwise, the system returns the following error information to the system administrator:

(Table 8)

Updating the EDUT instance pool:

the EDUT INSTANCE pool consists of two system tables (EDU _ INSTANCE table and EDU _ INSTANCE _ HIS table), where:

(1) the EDU _ INSTANCE table stores event INSTANCEs with the same name in an EDUT configuration list triggered by the current ACARS downlink message event, and marks the specific condition that the current ACARS downlink message event triggers a certain EDUT configuration, wherein the specific condition comprises the following steps:

(1.1) downstream ACARS EVENT name (or decoding table name) (EVENT);

(1.2) uplink trigger target aircraft number (ACNO), flight number (F L IGHTNO), timestamp (TIMESTAMP);

(1.3) an uplink start-stop threshold;

(1.4) an uplink instruction template and a text thereof;

(1.5) database constraints;

(1.6) and the result of each time the configuration is performed.

And the parameters in the EDUT example pool determine that the execution of the uplink instruction sending is the judgment result of the current trigger state identifier.

⑵ EDU _ INSTANCE _ HIS records the history data of EDU _ INSTANCE, and when the EDU _ INSTANCE is updated by each downlink ACARS event, the record in EDU _ INSTANCE _ HIS is automatically maintained, and the system administrator can obtain the state of executing the uplink instruction in EDU _ INSTANCE _ HIS each time.

And executing the sending of the uplink trigger instruction: as shown in fig. 14 to 17, the uplink instruction generating module further includes a template reading submodule, a template analyzing submodule, and an uplink instruction output submodule, which are connected in sequence, where the template reading submodule is used to read an uplink trigger instruction template in the EDUT instance configuration; the template analysis submodule is used for analyzing the uplink trigger instruction template to generate a complete uplink trigger instruction; and the uplink instruction output submodule writes the uplink trigger instruction into the uplink message buffer pool, namely outputs the uplink trigger instruction to the gateway interface of the airline company data link.

The template reading submodule firstly reads an uplink trigger instruction template in an EDUT configuration list, the template analysis submodule completes the analysis of the uplink trigger instruction template to generate a complete uplink trigger instruction, the uplink trigger instruction is cached in an uplink message buffer pool by an uplink instruction output submodule, namely the uplink trigger instruction is pushed to an airline data link gateway interface, and the gateway interface completes the sending of an uplink message to a target airplane.

The process of the template analysis submodule for analyzing the uplink instruction template is as follows:

as shown in FIG. 15, local ATN node addresses (L ocal ATN Address) are assigned, wherein the local ATN node addresses are seven-bit T-letter Address codes distributed by an ATN data operator (DSP) when the ATN node addresses are installed and deployed along with an airline data link gateway interface device, and are in the forms of CANXMCZ, DD L XCXA and the like.

As shown in fig. 16, the assigned ground-ground (TypeB) transfer priority code:

the transmission of ACARS messages consists of two processes: air-to-ground transport (air-to-ground transport) and ground-to-ground transport (ground-to-ground transport, following the TypeB (ATA/IATA standard) encoding specification), currently, according to the ARINC620 base protocol [ ARINC6203.2.1], TypeB uses a two-word code QU to identify messages for transport at queue priority. In the invention, the QU is stored in the form of background configuration parameters, which can be changed by an administrator and automatically read in during the process of analyzing the uplink instruction by the system. But currently, the ARINC620type b message format supports only QU.

Assigning an uplink target aircraft number: the upstream TARGET aircraft number is entered by the client application and the system replaces the < TARGET _ ACNO > or { ACNO } reserved word in the template with the incoming aircraft number.

Allocating an uplink timestamp: according to ARINC620 protocol standard, the uplink trigger instruction must carry timestamp information, in the invention, the timestamp uses UTC time (format DDHHMM-time-of-day time-of-minute) corresponding to the server system time. The timestamp is embedded in the upstream message header < MSG _ TIMESTAMP >.

Acquiring the state of an ATN routing node, wherein the ATN routing node is a table which is dynamically updated along with an aircraft downlink ACARS message and is automatically maintained by a system, and comprises four pieces of key information related to ATN network access, namely an aircraft number (ACNO), a flight number (F L IGHTNO), a DSP ADDRESS (DSP _ ADDRESS) and a downlink timestamp (D L _ TIMESTAMP), and the state table of the routing node comprises the following steps:

(watch 9)

According to the ARINC620 protocol standard, a different DSP ADDRESS indicates which data provider (DSP) the aircraft's last ACARS downlink message was provided from, the uplink message must also be assumed by that DSP, and the uplink timestamp (MSG TIMESTAMP) must not be earlier than the last downlink timestamp (D L _ TIMESTAMP), since the system cannot predict the DSP ADDRESS that the aircraft is likely to be at the next time.

The values of different DSPs for the silent time slots are not necessarily the same, and even some DSPs have no any restriction on the silent time slots. In the present invention, ii _ MSG _ Delay should be less than the minimum value min _ MSG _ Delay of all DSP silent slots. However, in actual operation, the min _ MSG _ Delay is often difficult to know, and it is difficult to ensure that the server time MSG _ TIMESTAMP is strictly consistent with UTC, so that the ii _ MSG _ Delay can take a large value in general.

In this case, if MSG _ TIMESTAMP-D L _ TIMESTAMP is larger than the silent time slot of a DSP, the DSP will automatically return the message to the upstream message sender, as shown in FIG. 17.

In the present invention, if the above condition is not satisfied:

MSG _ TIMESTAMP-D L _ TIMESTAMP is larger than ii _ MSG _ Delay or MSG _ TIMESTAMP-D L _ TIMESTAMP is smaller than 0, the system gives error prompt information and refuses to send an uplink triggering instruction:

Downlinked message is too old,message expired over then<ii_MSG_Delay)>min,System rejected to Create the EDU for<ACNO>

Where CurrentTimeSpam＝<ii_CurrentTimeSpam>

UplinkTimeStamp＝<MSG_TIMESTAMP>

TimeSpamDelay＝<MSG_TIMESTAMP-DL_TIMESTAMP>min

wherein:

(1) ii _ currenttimesspam represents the time slot between the current timestamp (UTC time) of the system and MSG _ TIMESTAMP, resulting from system internal delays;

(2) the parameters in the angle brackets "< >" are system calculated variables

Generating a complete uplink trigger instruction: after all the above conditions are met, all macro replacers in the uplink trigger instruction template are replaced with arguments, such as:

QU BJSXCXA

.CSNXMCZ 181619

CMD

AN B-6058

-EDUT COMMAND IN HERE└

writing into an uplink message buffer pool: and the complete uplink trigger instruction is written into the uplink message buffer pool and is delivered to the target aircraft by the DSP.

The application of the invention is as follows:

1. dynamically changing aircraft position information broadcast frequency

After MH370 event, China civil aviation CAAC New Specification aviation Carrier aircraft tracking monitoring implementation guide (AC-121-FS-2016-.

(1) For large airlines, flexible location reporting directly results in new communications tariff cost increases. The domestic airline (or the domestic part of the international airline) can provide second-level position tracking by using a secondary radar (SSR), but because the secondary radar data of the international airline part is difficult to obtain for domestic airlines, the invention can actively uplink a trigger instruction according to the attribute of flight numbers (distinguishing the international flight numbers from the domestic flight numbers) in ACARS downlink data and dynamically adjust the ACARS position report downlink time interval; or identifying a geographical sensitive area according to the geographical boundary information or flight track trend (assisted by a built-in navigation database) of the current position of the aircraft position, actively ascending a trigger instruction, and dynamically adjusting the time interval of the ACARS position reporting descending. Therefore, the data transmission cost is saved, the requirements of civil aviation regulations are met, and the flight safety is guaranteed.

(2) The invention can actively uplink the trigger command according to different grades of the downlink fault information of the airplane and dynamically adjust the downlink time interval of the ACARS position report. The method can customize the warning strategies and knowledge bases of the fault information of different levels in advance, actively uplink trigger instructions when the fault information of special interest is received, reduce the reporting downlink time interval of the ACARS position of the aircraft, closely concern the flight dynamics and ensure the flight safety.

(3) The invention can actively uplink the trigger instruction according to the key system parameter threshold in the aircraft engine state information (ACMS information) and dynamically adjust the downlink time interval of the ACARS position report. Similar to the fault information of the airplane system, the engine state information is also transmitted to the ground system in real time through the ACARS; different from the fault information of an airplane system, the engine state information is a computable numerical parameter, the background of the invention establishes a big data analysis process, when the engine state parameter transmitted by the airplane in real time reaches an out-of-tolerance threshold or reaches a trend analysis threshold of a ground system, the background actively uplink triggers an instruction, reduces the reporting downlink time interval of the ACARS position, closely focuses on the flight dynamic state and ensures the flight safety.

2. Automatic uplink instruction triggering aircraft ACMS state information downlink

The ACMS (aircraft state monitoring system) is a subsystem embedded in an onboard Flight Data Management (FDM) system, an engineering department pre-programs the ACMS and embeds various logic and operation conditions, in the flight process, the ACMS acquires and operates flight parameters in real time, after the conditions are met, the ACMS generates state monitoring messages (namely ACMS messages or ACMS information and the like) and descends to an airline ground system through an ACARS data link, or temporarily stores the state monitoring messages in a non-volatile storage device of the FDM, and engineering personnel can print out or copy and output in a cockpit after flight.

3. Automatic uplink instruction triggers airplane EICAS page information downlink

The EICAS-engine indication and aircraft crew warning system, when the aircraft is in fault, the EICAS is the main human-machine interface for the flight crew to obtain the flight deck warning information, wherein a maintenance page (hereinafter referred to as EICAS maintenance page) on the EICAS display gives the system parameter display of each key system, such as air conditioner, bleed air, fuel, hydraulic pressure, power supply and the like, as shown in fig. 18.

In the invention, according to the fault information keyword of the central maintenance system of the airplane, the uplink trigger instruction can be actively carried out, the EICAS maintenance page contents at different moments are transmitted to the ground system in a text format, the EICAS maintenance page contents are the ground engineering system and the synchronous perception cockpit effect, the key system parameters/information are obtained, and the active conditions are created for the remote flight fault support, as shown in the following table:

(watch 10)

4. Automatically triggering airborne information system configuration parameter downlink in flight process

B787 and other new generation electronic passenger aircraft have airborne information system configuration parameters that are extremely complex and dynamically change with the maintenance process of the aircraft, and when parts need to be replaced during the aircraft maintenance process, maintenance personnel must also perform configuration restoration on their electronic systems according to the latest configuration parameters of each aircraft, otherwise, the configuration mismatch may directly or indirectly cause equipment failure. The traditional means is to obtain the complex parameters by doing maintenance work each time

After the configuration information of the whole machine (or related system) is manually printed or copied (such as modification and serial exchange), the configuration information is filed to a file system of an enterprise background for other maintenance personnel to use. The traditional method is low in efficiency, and artificial errors exist, and copying missing and copying error sometimes occur. The invention can actively go up to trigger instruction in the process of airplane flying, trigger and generate the configuration parameters of the whole machine airborne information system and automatically go down to the ground system of the airline company, greatly improve the working efficiency and eliminate human errors. In the invention, EDUT (electronic data processing) start-stop control logic is used to bind the sending time of the uplink trigger instruction at the time when the electronic equipment of the airplane is least busy (for example, when the airplane takes off for 30 minutes or more in a steady state cruise, the trigger time is bound to a plurality of downlink position reports, and the trigger time is calculated according to the 15-minute interval of each position report), so that the uplink trigger instruction is sent, and the trigger is limited to be triggered for 1 time (the next flight can still be triggered).

5. Warning information for automatic uplink unit

There are special flight events where the aircraft's electronic systems are not necessarily able to alert the crew in a timely manner, and which are often potentially harmful, sometimes even serious, to the aircraft systems. For example, overload: when the aircraft encounters turbulence in the flight process, the aircraft body can generate positive or negative overload; landing overload (called heavy landing) may be generated due to weather or operation during landing, when the fuselage system or electronic equipment is not directly damaged, the events do not generate any cockpit warning (but actually cause potential system structural damage), and the flight experience and individual feeling of the flight crew are completely relied on to determine whether to report to the maintenance staff; as another example, for design reasons, some B737NG air conditioning systems may have their flow control valves closed uncommanded in the air without any cockpit warning, resulting in the aircraft entering a (slow) pressure relief state, possibly causing a cabin altitude warning to sound until the aircraft enters a dangerous state after the cabin altitude exceeds 10000 feet, and having entered an emergency state when the unit finds the presence of a fault.

The invention can set a corresponding uplink template according to a threshold value in a downlink message parameter generated by the ACMS in real time (the ACMS can acquire and detect flight parameters in real time to judge the existence of special flight events), and pushes a cockpit warning to a unit, or forms a cockpit sound warning (ding-dong), or is output from an onboard printer, or is displayed on a cockpit display, thereby achieving the purposes of immediately reminding the unit, taking an effect and avoiding the occurrence of potential secondary risks.

The embodiments of the present invention are not limited thereto, and according to the above-described contents of the present invention, the present invention can be modified, substituted or changed in various other forms according to the general technical knowledge and the conventional means in the field, which fall within the scope of the present invention.

Claims (10)

1. An event-driven data link uplink triggering device, which is embedded in a decoder of an AOC ground application system for decoding downlink messages and is in a decoder master process, is characterized in that: the data chain uplink trigger device based on event driving comprises:

the airplane effective number checking module is used for checking an effective airplane number;

the database constraint module is used for compiling database constraints;

the template definition module is used for predefining an uplink trigger instruction template;

the uplink instruction generating module is used for implanting a target airplane number into the uplink triggering instruction template to generate an uplink triggering instruction, caching the uplink triggering instruction into the uplink message buffer pool, immediately pushing the uplink triggering instruction to the airline data link gateway interface, and sending the uplink triggering instruction to the target airplane through the airline data link gateway interface;

the aircraft effective number checking module, the database constraint module and the uplink instruction generating module are sequentially connected, and the template defining module is connected with the uplink instruction generating module; the aircraft effective number checking module receives decoded information of a target aircraft downlink message as a condition parameter, if the condition parameter is valid, the target aircraft number is a valid aircraft number, the decoded information is output to the database constraint module, and if the condition parameter is invalid, the target aircraft number is an invalid aircraft number and returns to the main process of the decoder; the database constraint module compiles the database constraint, if the database constraint does not inhibit the decoded information, the uplink trigger instruction is executed, and if the database constraint inhibits the decoded information, the uplink trigger instruction is not executed, and the uplink trigger instruction is returned to the main process of the decoder; the template definition module predefines an uplink trigger instruction template, the uplink instruction generation module implants the target airplane number into the uplink trigger instruction template to generate an uplink trigger instruction, otherwise, the uplink trigger instruction returns to the main process of the decoder, the generated uplink trigger instruction is cached in the uplink message buffer pool, the uplink trigger instruction is pushed to the gateway interface of the airline company data chain, and then the gateway interface of the airline company data chain sends the uplink trigger instruction to the target airplane.

2. The event-driven data link uplink triggering device according to claim 1, wherein: the decoder main process packages each downlink message into an object structure to form a downlink message object, wherein the downlink message object comprises 5 attributes of a message ID, a message timestamp, an airplane number, a flight number and a message content; the condition parameters are decoding table names and downlink message objects.

3. The event-driven data link uplink triggering device according to claim 2, wherein: the aircraft valid number checking module checks by taking a decoding table name and a downlink message object as two condition parameters, returns to invalidity if one of the condition parameters is invalid, and returns to the main process of the decoder; if the two condition parameters are both effective, the decoding table name and the aircraft number attribute of the downlink message object are used as two input parameters, EDUT-ID (electronic device-identification) is used as a related one-to-one connection for an EDUT configuration list and an effective aircraft number list in the template definition module to obtain a result set, if the number of items in the result set is greater than 0, the target aircraft number can trigger one or some defined EDUT configurations in the EDUT configuration list, and then the target aircraft number is returned to be effective, namely the target aircraft number is the effective aircraft number; otherwise, returning to be invalid, namely the target airplane number is an invalid airplane number; the EDUT configuration list comprises trigger conditions determined by template, database constraint and effective airplane number, the EDUT configuration list is formed by a plurality of trigger conditions, and each trigger condition has a unique number, namely EDUT-ID.

4. The event-driven data link uplink triggering device according to claim 3, wherein: the database constraint module takes a decoding table name, a message ID attribute and an airplane number attribute of a downlink message object as input conditions of a compiling process of the database constraint module, takes the decoding table name and the airplane number attribute of the downlink message object as two input parameters, carries out one-to-one connection on an EDUT configuration list and an effective airplane number list by taking EDUT-ID as correlation to obtain a result set, circularly executes each record in the result set, allows an uplink trigger instruction to be executed if the database constraint configured by the EDUT in the EDUT configuration list does not inhibit the current downlink message object, and sends the message ID attribute, the timestamp attribute, the airplane number attribute, the flight number attribute and the decoding table name of the downlink message object into the uplink instruction generation module; otherwise, the uplink trigger instruction is not executed, and the decoder returns to the main process.

5. The event-driven data link uplink triggering device according to claim 4, wherein: the template definition module comprises a trigger event definition submodule, a definition modification type submodule, a template editing submodule, a template list submodule and an uplink trigger start-stop submodule which are connected in sequence, wherein the trigger event definition submodule is used for defining a trigger event, and the trigger event is an event for starting an uplink trigger instruction to send when a decoder receives a downlink message of a specific type; the modification type defining sub-module defines 4 modification types, namely triggering a new message generated by the airplane in real time, triggering a message generated by the airplane finally, triggering a message generated by a unit/man and triggering a brief report of the current flight segment stored on an airborne nonvolatile storage device; the template editing submodule provides a basic coding format of an uplink triggering instruction, an embedded ATN network control symbol and an uplink triggering instruction reserved word or macro replacement symbol; the template list submodule is used for a system administrator to operate and finish the binding of a trigger event, a change type and a template, set an uplink trigger start-stop logic, bind an effective airplane number, set a database constraint and operate and revise an uplink trigger instruction; the uplink trigger start-stop sub-module is used for starting an event, namely, the decoder executes the transmission of an uplink trigger instruction when receiving the Nth event of the current flight; when N is 0, this condition is bypassed; this condition is bypassed when the maximum number of times the decoder sends an up trigger instruction to the current flight is 0.

6. The event-driven data link uplink triggering device according to claim 5, wherein: the uplink instruction generating module comprises a template reading submodule, a template analyzing submodule and an uplink instruction output submodule which are sequentially connected, wherein the template reading submodule is used for reading an uplink trigger instruction template in the EDUT example configuration; the template analysis submodule is used for analyzing the uplink trigger instruction template to generate a complete uplink trigger instruction; the uplink instruction output submodule writes an uplink trigger instruction into an uplink message buffer pool and immediately outputs the uplink trigger instruction to an airline data link gateway interface; the uplink instruction generating module further comprises an airplane effective number binding submodule, a log maintaining submodule and an instance state maintaining submodule which are sequentially connected, wherein the airplane effective number binding submodule is used for distributing an effective airplane number to each uplink trigger instruction; the log maintenance submodule is used for recording the execution result of each uplink trigger instruction; the instance state maintenance submodule is used for maintaining the triggering process and the current triggering state of each uplink triggering instruction.

7. The triggering method of the data link uplink triggering device based on event driving according to claim 1, specifically comprising the following steps:

⑴, receiving information of the decoder decoding the target airplane downlink message as a condition parameter, if the condition parameter is valid, the target airplane number is a valid airplane number, if the condition parameter is invalid, the target airplane number is an invalid airplane number, and returning to the decoder main process;

⑵ compiling database constraints, if the database constraints do not inhibit the decoded information, executing an uplink trigger instruction, if the database constraints inhibit the decoded information, not executing the uplink trigger instruction, and returning to the main process of the decoder;

⑶, implanting the target airplane number into a predefined uplink trigger instruction template to generate an uplink trigger instruction, otherwise, returning to the decoder main process, caching the generated uplink trigger instruction into an uplink message buffer pool, immediately pushing the uplink trigger instruction to an airline data chain gateway interface, and sending the uplink trigger instruction to the target airplane by the airline data chain gateway interface.

8. The triggering method according to claim 7, wherein in said step ⑴, the decoding table name and the downlink message object are checked as two condition parameters, if one of the input parameters is invalid, the decoding table name and the downlink message object are returned to invalid and returned to the decoder main process, if both the input parameters are valid, the EDUT configuration list and the valid aircraft number list are connected in a one-to-one manner by using the EDUT-ID as the associated attributes of the decoding table name and the downlink message object, a result set is obtained, if the number of entries in the result set is greater than 0, the EDUT configuration list is indicated that the target aircraft number can trigger a certain defined EDUT configuration in the EDUT configuration list, the EDUT configuration list is returned to valid, otherwise, the target aircraft is returned to invalid, the target aircraft number is an invalid aircraft number, the EDUT configuration list comprises trigger conditions determined by template, database constraints and valid aircraft numbers, the set of the trigger conditions forms the EDUT configuration list, and each trigger condition has a unique number, namely, the EDUT-ID.

9. The triggering method according to claim 8, wherein in said step ⑵, the decoding table name, the message ID attribute and the airplane number attribute of the downlink message object are used as the input conditions of the compiling process, the decoding table name and the airplane number attribute of the downlink message object are used as two input parameters, the EDUT configuration list and the valid airplane number list are connected in a one-to-one manner by taking the EDUT-ID as the association, a result set is obtained, the execution is performed cyclically for each record in the result set, if the database constraint configured by the EDUT in the EDUT configuration list does not restrain the current downlink message object, the execution of the uplink triggering instruction is allowed, otherwise, the uplink triggering instruction is not executed, and the decoder main process is returned.

10. The triggering method according to claim 9, wherein in said step ⑶, the uplink triggering instruction template in the EDUT instance configuration is read, the uplink triggering instruction template is analyzed to generate a complete uplink triggering instruction, the uplink triggering instruction is written into the uplink message buffer pool, and then the uplink triggering instruction is output to the airline data link gateway interface.

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