CN112910687B - Flight simulator voice communication simulation method based on virtual communication link - Google Patents
Flight simulator voice communication simulation method based on virtual communication link Download PDFInfo
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- H—ELECTRICITY
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- G09B9/00—Simulators for teaching or training purposes
- G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
- G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
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Abstract
The invention discloses a flight simulator voice communication simulation method based on a virtual communication link, belonging to the field of flight simulation; the method specifically comprises the following steps: firstly, constructing a simulation device in a simulated airplane cabin of an airplane, and respectively setting each voice communication station as a node; selecting a voice communication mode for each node, adding each node of the same communication mode into the same link, counting and marking the connection times of every two nodes in each link, and realizing connection according to a maximized communication principle. Connecting all input devices of one of the two nodes connected by the mark to all output devices of the other node, and setting the call volume; when the communication connection times of the two nodes are more than or equal to 2, when one communication link is disconnected, the connection times are reduced by 1 until the communication times between the two nodes become 0, the communication links between the two nodes are completely disconnected, and the voice call is ended. The invention has low maintenance cost, good sound quality and low communication delay.
Description
Technical Field
The invention belongs to the field of flight simulation and computer simulation, and particularly relates to a flight simulator voice communication simulation method based on a virtual communication link.
Background
The aircraft communication system integrates various communication modes, including high-frequency communication, very high frequency, internal telephone system, satellite communication system and the like, and various communication modes are complex and various.
For flight simulators, voice communication is an important part of communication system simulation; however, the complicated voice communication structure makes the simulation of the voice communication system difficult, and mainly includes two aspects:
first, equipment quantity and kind are many, including a plurality of handheld microphones, jib microphone, oxygen face guard, communication loudspeaker and jib earphone etc..
And secondly, the simulators of different levels have different requirements on the voice communication system, and challenge is brought to the flexibility of the system.
The existing simulators mostly adopt a hardware connection mode to realize functions such as voice control distribution and the like, so that the system has more hardware equipment, poor flexibility and high cost. In addition, if the mode of collecting and playing back by the sound card is adopted, the voice communication delay is large, and the communication connection is complex.
Disclosure of Invention
Aiming at the problems, the invention provides a flight simulator voice communication simulation method based on a virtual communication link, which has the advantages of low cost, less hardware equipment, high flexibility, low delay, high call quality and the like.
The voice communication simulation method comprises the following specific steps:
firstly, constructing a simulation device of a multi-channel voice communication system in a simulated cabin of an airplane;
the specific construction process is as follows:
connecting the communication simulation computer and the network audio processor to the same network through a network cable;
the network audio processor has 16 analog signal inputs and 16 analog signal outputs, and is connected with different audio input and output devices according to different requirements, and the connection mode of a typical scene is as follows:
the input channel comprises a machine length suspender microphone, a machine length handheld microphone and a machine length oxygen mask; a copilot boom microphone, a copilot hand-held microphone, a copilot oxygen mask; a boom microphone of an observer, a microphone held by the observer, and an oxygen mask of the observer; an instructor boom microphone and an instructor hand microphone.
The output channel includes: a machine length boom earphone and a machine length loudspeaker; a copilot boom headset, a copilot speaker; observer boom headphones and instructor boom headphones.
The number of the audio control panels is 3, the audio control panels are respectively arranged in a flight simulation cabin, respectively correspond to the captain, the copilot and the observer, collect data and send the data to the communication simulation computer.
Step two, aiming at the flight simulator, setting each voice communication station as a communication node;
the voice communication station comprises a pilot, a co-driver, an observer and an instructor;
step three, aiming at each node, selecting a voice communication mode corresponding to each node through a radio panel, wherein each voice communication mode corresponds to a virtual communication link;
the voice call mode of each node is not determined, and the number of the voice call modes is at most 11.
The input parameters of the radio panel include: a press call flag, speaker volume, an activation flag of a voice call mode, and sound mixing volume.
Step four, judging whether the voice communication modes of all the nodes are the same, if so, adding all the nodes of the same communication mode into the same link, and entering the step five; otherwise, directly entering the step five;
and step five, each node is respectively added into each communication link, each two nodes in each link are subjected to statistics and marking of connection times, and connection of voice communication is realized according to a maximized communication principle.
The specific process is as follows:
step 501, aiming at the current communication link, judging whether the number of nodes in the link is 0 or 1, if so, queuing the link again without voice communication, and entering step 503; otherwise, the number of the nodes is more than or equal to 2, and the step 502 is entered;
step 502, respectively judging whether two nodes are connected or not aiming at each two nodes in the link, and if so, adding 1 to the connection times between the two nodes; entering step 503; otherwise, marking to establish voice call connection;
every two nodes in the link are processed as follows:
for two nodes a and b which are connected for the first time in the current link, marking that the nodes a and b can establish connection, and connecting for the times t ab 1; establishing connection in different communication links aiming at the nodes a and b, and accumulating the connection times corresponding to the two nodes;
step 503, selecting the next communication link, returning to step 501 to perform repeated judgment until all links are counted;
and step six, traversing the connection of all the two node marks, connecting all the input devices of one node to all the output devices of the other node, and setting the call volume of the two nodes.
When the connection is established, the volume of the two nodes is respectively set as the volume of the communication mode of the respective audio control panel; if a speaker is present in the output device, the speaker volume of the audio control panel is sent to the speaker output channel.
And seventhly, when the communication connection times of the two nodes are more than or equal to 2, and when one communication link is disconnected, the connection times are reduced by 1 until the communication times between the two nodes become 0, the communication links between the two nodes are completely disconnected, and the voice call is ended.
The invention has the advantages that:
1) compared with the existing method which needs various voice communication devices, the flight simulator voice communication simulation method based on the virtual communication link has the advantages that the number of the devices is greatly reduced, the connection mode is simple, and the flight simulator voice communication simulation method based on the virtual communication link has the characteristics of simple structure, low use and maintenance cost, good tone quality and low communication delay;
2) the flight simulator voice communication simulation method based on the virtual communication link is high in universality and can flexibly meet the requirements of various different models and projects.
3) The flight simulator voice communication simulation method based on the virtual communication link can effectively improve the anti-noise capability of voice communication by setting noise reduction parameters aiming at the environment and each device so as to adapt to the complex communication environment requirement.
Drawings
FIG. 1 is a schematic diagram of a virtual link of a multi-channel voice call system constructed in accordance with the present invention;
FIG. 2 is a flow chart of a flight simulator voice communication simulation method based on a virtual communication link according to the present invention;
fig. 3 is a connection diagram of the simulation apparatus employed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The voice communication simulation method, as shown in fig. 1, first constructs communication nodes, dynamically generates nodes by loading node configuration, and flexibly adapts to different configurations; then, node input and output devices are added, and a node may have a variety of different input and output devices. The virtual link shields the details of the input and output equipment of the nodes, so the input and output equipment needs to be added to each node; then inputting an external control command, wherein the input parameters comprise an ACP control command, a radio connection state and the like; forming a plurality of virtual communication links by the nodes according to the control command; for each virtual communication link, calculating parameters such as a sound mixing mode, volume and the like of the input and output equipment according to the control command; and finally, adjusting the control parameters of the shared nodes according to the conflict resolution strategy, and sending out the parameter adjustment commands of the input and output equipment of each node until the simulation is finished.
As shown in fig. 2, the specific steps are as follows:
firstly, constructing a simulation device of a multi-channel voice communication system in an airplane simulation cabin;
the specific construction process is as follows:
connecting the communication simulation computer and the network audio processor to the same network through a network cable; so as to control the transceiving of commands.
The network audio processor is a comprehensive multifunctional audio processing device widely used for conference systems, can be conveniently connected with input and output devices of various audios and can be controlled in real time, has the input of 16 paths of analog signals and the output of 16 paths of analog signals, is connected with different audio input and output devices according to different requirements, and has the advantages of simple structure, flexible expansion, low use and maintenance cost, good sound quality, low delay and the like.
The connection mode of a typical scene is as follows:
the input channel comprises a machine length suspender microphone, a machine length handheld microphone and a machine length oxygen mask; a co-driver boom microphone, a co-driver handheld microphone, a co-driver oxygen mask; a boom microphone of an observer, a microphone held by the observer, and an oxygen mask of the observer; an instructor boom microphone and an instructor hand microphone.
The output channel includes: a machine length boom earphone and a machine length loudspeaker; a copilot boom headset, a copilot speaker; observer boom headphones and instructor boom headphones.
An Audio Control Panel (Audio Control Panel-ACP) is a main hardware input device for Audio Control commands, and is generally installed in a flight simulation cabin. The typical large civil aircraft generally has 3 ACPs (ACP1, ACP2 and ACP3), which respectively correspond to the captain, the copilot and the observer, and the data are sent to the communication simulation computer through the acquisition system.
Setting an audio input channel on an audio processor according to the characteristics of input and output equipment and the environment noise state, wherein various noise reduction parameters of each equipment comprise sensitivity, an amplitude limiter, an equalizer, feedback inhibition and the like;
the audio processor is specifically: firstly, communication control software outputs specific control commands for each input/output channel, wherein the specific control commands comprise input mute, output mute, volume adjustment, routing channel change and the like; after receiving the control command, the audio processor controls the routing and the sound mixing state of the input and output equipment; the linear input of the input device can be directly connected to the audio processor, and if the input signal has noise or echo, the improvement can be carried out by adjusting a corresponding controller; the output device goes through a power amplifier into a speaker or a direct linear output pushes a headset.
Step two, aiming at the flight simulator, setting each voice communication station as a communication node;
the voice communication station comprises a pilot, a co-driver, an observer and an instructor;
step three, aiming at each node, selecting a voice communication mode corresponding to each node through a radio panel, wherein each voice communication mode corresponds to a virtual communication link;
the voice call mode of each node is not determined, and at most 11 types are available.
The input parameters of the radio panel include: a press call flag, speaker volume, an activation flag of a voice call mode, and sound mixing volume.
The virtual communication link abstracts the links of all the voice communication devices, and the voice communication devices working in different modes form a virtual communication link, and the devices in the link can talk with each other, so that the problem of communication adaptation of various voice communication devices in different modes is solved from a software level.
Step four, judging whether the voice communication modes of all the nodes are the same, if so, adding all the nodes of the same communication mode into the same link, and entering the step five; otherwise, directly entering the step five;
and step five, each node is respectively added into each communication link, each two nodes in each link are subjected to statistics and marking of connection times, and connection of voice communication is realized according to a maximized communication principle.
The voice call can be carried out by maximizing the communication principle, namely, only one communication mode is used for establishing the voice connection.
The specific process is as follows:
step 501, aiming at the current communication link, judging whether the number of nodes in the link is 0 or 1, if so, queuing the link again without voice communication, and entering step 503; otherwise, the number of the nodes is more than or equal to 2, and the step 502 is entered;
step 502, respectively judging whether two nodes are connected or not aiming at each two nodes in the link, if so, adding 1 to the connection times between the two nodes; entering step 503; otherwise, marking to establish voice call connection;
every two nodes in the link are processed as follows:
for two nodes a and b which are connected for the first time in the current link, marking that the nodes a and b can establish connection, and connecting for the times t ab 1 is ═ 1; establishing connection in different communication links aiming at the nodes a and b, and accumulating the connection times corresponding to the two nodes;
step 503, selecting the next communication link, returning to step 501 to perform repeated judgment until all links are counted;
and step six, traversing the connection of all the two node marks, connecting all the input devices of one node to all the output devices of the other node, and setting the call volume of the two nodes.
When the connection is established, the volume of the two nodes is respectively set as the volume of the communication mode of the respective audio control panel; if a speaker is present in the output device, the speaker volume of the audio control panel is sent to the speaker output channel.
And seventhly, when the communication connection times of the two nodes are more than or equal to 2, and when one communication link is disconnected, the connection times are reduced by 1 until the communication times between the two nodes become 0, the communication links between the two nodes are completely disconnected, and the voice call is ended.
Example (b):
as shown in fig. 3, for a certain type of flight simulator, 4 voice communication station leaders, copilot, observer and instructor stations are required; the voice communication modes to be realized include: very high frequency communication (VHF1, VHF2, VHF3), high frequency communication (HF1, HF2), satellite communication, cabin telephone, intercom and passenger broadcasting 11. The network audio processor supporting VOIP is adopted as the voice connection processing hardware, so that the transmission distance can be increased, the transmission loss can be reduced, and the connection mode can be simplified.
The specific process is as follows:
first, 4 communication nodes are determined: captain, copilot, observer, and instructor.
Secondly, configuring a node input and output device channel, which is as follows:
input channel configuration
Output channel configuration
And thirdly, constructing a virtual communication link according to the ACP input. Each node has 11 communication modes, which means that there are 11 virtual communication links.
And adding the nodes which select the same communication mode into the same link, and enabling devices in the link to talk with each other.
And fourthly, configuring a communication mode of the conflict node according to the node conflict strategy.
The above third step and fourth step are explained below by way of example.
Assuming the radio panel is properly connected, ACP1 selects VHF1, ACP2 selects VHF2, and ACP3 selects VHF 1. According to the node definition, the captain node and the observer node are added into the VHF1 virtual communication link, and the copilot is added into the VHF virtual communication link. Generally, one service node may be provided for each communication method, or one node may be shared by a plurality of communication methods. In this example, the instructor node simultaneously carries the service nodes for several communication modes, 3 VHF, 2 HF, satellite calls and internal calls.
Since the instructor is a common node, conflict resolution policies need to be formulated. In this example, the instructor can select one of 3 VHF, 2 HF, satellite calls to indicate the corresponding service node at the time, while the internal phone is configured in a normal manner, i.e., in the internal phone virtual link at any time. Assume that the instructor selects the VHF1 type, at which time the instructor is in the VHF1 virtual link and the conversational virtual link.
And fifthly, traversing all communication links, wherein nodes in the links have the capability of mutual communication. When a node presses PPT (push to talk), the nodes in the link can control the volume to receive voice.
And sixthly, controlling input and output equipment of each node, taking the captain as an example, wherein the captain has three microphone inputs, and determining which microphone can be switched on according to the panel state and the control command. The captain has two outputs, boom earphone and captain speaker, and the two outputs receive the same audio input, and the volume can be different according to the panel command.
And finally, judging whether the simulation is finished or not, and otherwise, jumping to the third step to calculate the next frame.
Claims (4)
1. A flight simulator voice communication simulation method based on a virtual communication link is characterized by comprising the following specific steps:
firstly, constructing a simulation device of a multi-channel voice communication system in an airplane simulation cabin;
the specific construction process is as follows:
connecting the communication simulation computer and the network audio processor to the same network through a network cable;
the network audio processor has 16 paths of analog signal input and 16 paths of analog signal output, and is connected with different audio input devices or audio output devices according to different requirements;
the number of the audio control panels is 3, the audio control panels are respectively arranged in a flight simulation cabin, respectively correspond to a captain, a copilot and an observer, collect data and send the data to a communication simulation computer;
step two, aiming at the flight simulator, setting each voice communication station as a node respectively;
the voice communication station comprises a pilot, a co-driver, an observer and an instructor;
step three, aiming at each node, selecting a voice communication mode corresponding to each node through a radio panel, wherein each voice communication mode corresponds to a virtual communication link;
step four, judging whether the voice communication modes of all the nodes are the same, if so, adding all the nodes of the same voice communication mode into the same virtual communication link, and entering the step five; otherwise, directly entering the step five;
step five, each node is respectively added into each virtual communication link, the connection times of every two nodes in each virtual communication link are counted and marked, and the connection of voice communication is realized according to the maximum communication principle;
the specific process is as follows:
step 501, aiming at the current virtual communication link, judging whether the number of nodes in the virtual communication link is 0 or 1, if so, queuing the virtual communication link again without voice communication in the virtual communication link, and entering step 503; otherwise, the number of the nodes is more than or equal to 2, and the step 502 is entered;
step 502, respectively judging whether two nodes are connected or not aiming at each two nodes in the virtual communication link, if so, adding 1 to the connection times of the two nodes; entering step 503; otherwise, the following processing is carried out between every two nodes in the virtual communication link:
for two nodes a and b connected for the first time in the current virtual communication link, marking that the nodes a and b can establish connection and the connection times t of the two nodes ab = 1; establishing connection in different virtual communication links aiming at nodes a and b, and accumulating the connection times of the two nodes;
step 503, selecting the next virtual communication link, returning to step 501 to perform repeated judgment until all the virtual communication links are counted;
step six, traversing all the connected two nodes, connecting all the audio input devices of one node to all the audio output devices of the other node, and setting the communication volume of the two nodes;
and seventhly, when the connection times of the two nodes are more than or equal to 2, and one virtual communication link is disconnected, subtracting 1 from the connection times of the two nodes until the connection times of the two nodes become 0, completely disconnecting the virtual communication links between the two nodes, and ending the voice call.
2. The flight simulator voice communication simulation method based on the virtual communication link as claimed in claim 1, wherein in the first step, the input of the 16-path analog signal is collected through the following audio input devices: a boom microphone, a handheld microphone and an oxygen mask; a copilot boom microphone, a copilot hand-held microphone, a copilot oxygen mask; a boom microphone of an observer, a microphone held by the observer, and an oxygen mask of the observer; an instructor boom microphone and an instructor hand-held microphone;
the output of the 16 analog signals is output through the following audio output devices: a machine length boom earphone and a machine length loudspeaker; a co-driver boom headset, a co-driver speaker; observer boom headphones and instructor boom headphones.
3. The flight simulator voice communication simulation method based on virtual communication link of claim 1, characterized in that in the third step, the voice communication mode of each node is of variable type, at most 11;
the input parameters of the radio panel include: a press call flag, speaker volume, an activation flag of a voice communication mode, and sound mixing volume.
4. The flight simulator voice communication simulation method based on the virtual communication link according to claim 1, wherein the communication volumes of the two nodes in the sixth step are respectively set as follows: the volume of the voice communication mode of each audio control panel; if a speaker is present in the audio output device, the speaker volume of the audio control panel is sent to the speaker output channel.
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