CN111556593A - Ad hoc network terminal communication system - Google Patents
Ad hoc network terminal communication system Download PDFInfo
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- CN111556593A CN111556593A CN202010353555.XA CN202010353555A CN111556593A CN 111556593 A CN111556593 A CN 111556593A CN 202010353555 A CN202010353555 A CN 202010353555A CN 111556593 A CN111556593 A CN 111556593A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
Abstract
The invention is a self-organizing network terminal communication system; be applied to a plurality of communication terminal's ad hoc network interconnection, each communication terminal includes: the signal searching module responds to a first communication request of a user and sends a first pairing code to the coverage area in a ZigBee communication mode; the first pairing code is used for matching with other communication terminals; the signal transmission module is used for receiving the second pairing codes sent by other communication terminals and verifying the second pairing codes, and data transmission is carried out after the verification is successful; the transmission data in the data transmission comprises user identity information stored by the main control module, a live-action map shot by the live-action capture unit and a user real-time altitude; the interconnection of the two communication terminals is realized, so that the intercommunication of peripheral scenes can be realized between each independent terminal in a network-free environment or a jungle exploration and disaster relief environment; the personal safety of each user is guaranteed, a reference system under a blind map is established through a map training unit, and the positions of the communication terminals can be determined.
Description
Technical Field
The invention relates to the technical field of terminal communication, in particular to an ad hoc network terminal communication system.
Background
In the existing market, whether a GPS user terminal or a Beidou system user terminal is adopted, most products have the characteristics of large volume, portability, high price and complex operation, and are difficult to meet the requirements of easy use and portability of the civil market, particularly in the scattered scenes such as emergency disaster relief, team jungle exploration and self-erection swimming; in these application scenarios, identification of the personal location and the surrounding environment is very important, but the distance between the personal location and the surrounding environment changes during the movement, so that communication under such application environments needs to be realized by a certain method, and it is ensured that people under discrete environments can realize information exchange and communication.
Disclosure of Invention
Aiming at the existing technologies such as: in the prior art, communication within a certain range is not realized through an ad hoc network, and the communication requirements of discrete people, mainly forest field inspection personnel, fire rescue personnel and team jungle exploration personnel, cannot be met.
The communication system is applied to the self-networking interconnection of a plurality of communication terminals, and each communication terminal comprises:
the signal searching module responds to a first communication request of a user and sends the first pairing code to a coverage area in a ZigBee communication mode; the first pairing code is used for matching with other communication terminals;
the signal transmission module is used for receiving the second pairing codes sent by other communication terminals and verifying the second pairing codes, and data transmission is carried out after the verification is successful; or receiving data returned by other communication terminals after responding to the first pairing code;
the transmission data in the data transmission comprises user identity information stored in the main control module, a live-action map shot by the live-action capturing unit and the real-time altitude of the user.
Preferably, the system further comprises a plurality of display modules, and after the signal receiving module succeeds in verification, each display module displays the user identity information, the live-action map and the real-time altitude transmitted by different communication terminals.
Preferably, the signal transmission module includes a sorting unit, and the sorting unit performs time sorting on the second pairing codes sent by the plurality of other communication terminals, and identifies the number of other communication terminals capable of performing communication within the coverage area.
Preferably, the main control module comprises a map training unit, the map training unit stores a map library shot by the live-action capturing unit, and performs feature comparison according to live-action maps of other communication terminals received by the signal transmission module to determine the association relationship between the communication terminals and the road sections.
Preferably, the main control module further comprises a two-dimensional measuring unit, the two-dimensional measuring unit calibrates the fuzzy two-dimensional coordinates of other communication terminals according to the incidence relation judged by the map training unit, and judges the relative distance of other communication terminals according to the time sequence of the sequencing unit.
Preferably, the signal transmission module calibrates the transmission coverage of the first pairing code during verification, compares the transmission coverage with the transmission coverage of the received second pairing code, and passes verification if the transmission coverage of the second pairing code falls into the transmission coverage of the first pairing code; otherwise, the verification fails.
Preferably, the voice module is further included, and is configured to receive a voice of a user, convert the voice into a voice electrical signal, and transmit the voice electrical signal through the signal transmission module.
Preferably, the voice module is provided with a speaker unit, and the speaker unit is used for playing the voice electric signal output from other communication terminals.
Preferably, the main control module includes a storage unit, and the storage unit is used for storing the moving path of the communication terminal.
Preferably, the live-action capturing unit is one of a CCD camera, an RGB-D sensor, an RGB camera, an ultrasonic wave, a laser, an optical image sensor, a three-dimensional terrain detector, and the like.
The invention has the beneficial effects that: compared with the prior art, the invention provides the ad hoc network terminal communication system; be applied to a plurality of communication terminal's ad hoc network interconnection, each communication terminal includes: the signal searching module responds to a first communication request of a user and sends a first pairing code to the coverage area in a ZigBee communication mode; the first pairing code is used for matching with other communication terminals; the signal transmission module is used for receiving the second pairing codes sent by other communication terminals and verifying the second pairing codes, and data transmission is carried out after the verification is successful; the transmission data in the data transmission comprises user identity information stored by the main control module, a live-action map shot by the live-action capture unit and a user real-time altitude; the interconnection of the two communication terminals is realized, so that the intercommunication of peripheral scenes can be realized between each independent terminal in a network-free environment or a jungle exploration and disaster relief environment; the personal safety of each user is ensured, and the position between the communication terminals can be determined by establishing a reference system without a map through the map training unit.
Drawings
FIG. 1 is a system flow diagram of the present invention;
FIG. 2 is a system architecture diagram of the present invention;
fig. 3 is a diagram of a terminal architecture of the present invention.
The main element symbols are as follows:
1. a signal searching module; 2. a signal transmission module; 21. a sorting unit; 3. a main control module; 31. a map training unit; 311. a map library; 32. a map capture unit; 33. a two-dimensional measurement unit; 4. a display module; 5. and a voice module.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
In the current life, more and more people like to carry out jungle exploration, but the existing device, no matter GPS or Beidou navigation, cannot perfectly display the complex terrain of the forest district path, because the bottom end of the jungle is usually separated by only one hundred meters, huge altitude difference can occur, and real path finding cannot be carried out, although the two are in the same mountain forest, two points separated by the radar can be displayed, under the condition of no map reference system, the two people can not know where the two people are at all, or how to converge, and the specific safety condition and the surrounding condition can not be known; the situation is more common in mountain fire rescue, and the obvious problem is more serious, because in case of fire in a mountain, firemen need to enter the mountain to extinguish the fire or cut down the isolation zone, and at the moment, local people are usually used for route guidance; however, under the condition of a mountain wind and tsunami, the mountain fire condition is extremely unstable, if a visible local area network can be established in a certain range, and the map distance and the map characteristics are calibrated, the personal safety of the user can be confirmed, the situation of the user can be understood, and the safest judgment can be made, namely the local area network is established between the terminals which are communicated with each other, the mutual map image characteristic communication is realized, and a map coordinate system can be established for the user through the characteristic comparison, so that the actual position of the opposite side can be accurately judged; in the prior art, although the compass can establish a map coordinate system, the compass is a device which can be understood by professionals, and people who cannot understand or are not familiar with the compass only add a heavy load; therefore, there are many problems that are not solved in this application scenario, and there is a need for an ad hoc network terminal communication system that can solve this problem.
Specifically, referring to fig. 1 to 3, an ad hoc network terminal communication system is applied to ad hoc network interconnection of a plurality of communication terminals, each of which includes:
the signal searching module 1 responds to a first communication request of a user and sends a first pairing code to a coverage area in a ZigBee communication mode; the first pairing code is used for matching with other communication terminals; because the ZigBee communication mode is transmitted by depending on a wireless network, the ZigBee wireless communication mode can realize short-distance wireless connection, and the transmission range is within 0-200 meters, the ZigBee wireless communication mode can completely meet the requirements of jungle exploration and disaster relief actions, has the characteristics of low power consumption and high reliability, and can provide a wide transmission space for data;
the signal transmission module 2 is used for receiving second pairing codes sent by other communication terminals, verifying the second pairing codes, and transmitting data after the verification is successful; or receiving data returned by other communication terminals after responding to the first pairing code; because in some exploration competitions or antagonistic entertainment competitions, the verification is needed after the match codes are received, and the interconnection is ensured to be safe and reliable; it is worth to be noted that after the communication terminal A sends the first pairing code, the communication terminal B receives the first pairing code, then the interconnection communication is established, and the communication terminal B and the communication terminal A can perform information interaction through respective signal transmission modules; after the communication terminal A receives the pairing code sent by the communication terminal C, information interaction between the communication terminal A and the communication terminal C can be established; if the communication terminal B and the communication terminal C are also in the respective coverage range, information interaction can be carried out after pairing code verification is carried out;
the transmission data in the data transmission comprises user identity information stored in the main control module 3, a live-action map shot by the live-action capture unit 33 and a user real-time altitude; the user identity information is used as a verification means, the user identity information needs to be displayed after pairing, which is equivalent to secondary confirmation and verification, and the live-action capturing unit captures surrounding live-actions in real time. The technical scheme is very necessary for the interconnection of people in discrete distribution or Brownian motion; because the user has the corresponding ability to pay attention only within the corresponding range and to communicate information only within the range, the distance is meaningless and the discrete type distribution of the exploration of the jungle is not satisfied.
In this embodiment, the mobile terminal further comprises a plurality of display modules 4, and after the signal receiving module succeeds in verification, each display module 4 displays user identity information, a live-action map and a real-time altitude transmitted by different communication terminals; and because the communication terminals establish the ad hoc network, when the real-time positions of a plurality of discrete point users need to be displayed, a plurality of screens are needed for displaying.
In this embodiment, the signal transmission module 2 includes a sorting unit 21, and the sorting unit 21 performs time sorting on the second pairing codes sent by the other communication terminals to identify the number of the other communication terminals capable of performing communication within the coverage area; as a system needing real-time networking, the system has the possibility of real-time position conversion, namely each unit establishing interconnection can exceed the coverage range of communication signals at any time, so time sequencing is needed, users with far and near relative distances can be calibrated, the time sequencing can judge the distance of the terminals connected with each other to a certain extent, and because a map-free area does not have a fixed reference object, the approximate position of the terminals generating interconnection can be observed according to the environment of the users on the basis of the time sequencing.
In this embodiment, the main control module 3 includes a map training unit 31, the map training unit 31 stores a map library 311 captured by the live-action capture unit 32, and performs feature comparison according to the live-action maps of other communication terminals received by the signal transmission module to determine the association relationship between the communication terminals and the road sections; because the picture shot by the camera with the depth mode can be directly subjected to certain binarization processing on the three-dimensional coordinates, the map library of the communication terminal A can be compared with the live-action map transmitted by the communication terminal B in real time, whether the user B walks on the path or scene through which the user A passes is verified, and then a map coordinate system is established, so that the mutual positions of two users who establish mutual communication can be confirmed, the lost is prevented, and the path can be found according to the map characteristics. And through communication interconnection among a plurality of users, the local map can be trained, namely a map model can be established by roughly advancing paths, a safe path is provided for the backward people who advance within the range of 200m, the lost is prevented, and the safety performance is improved to a certain degree.
In this embodiment, the main control module 3 further includes a two-dimensional measuring unit 33, where the two-dimensional measuring unit 33 calibrates the fuzzy two-dimensional coordinates of other communication terminals according to the association relationship judged by the map training unit, and judges the relative distances of the other communication terminals according to the time sequence of the sequencing unit; because the map training unit establishes a map coordinate system for the graph capable of finding the features, but establishes an intersection on a path where a plurality of interconnected user parts do not pass, the distance is fuzzy, and the distance is established according to time sequencing in order to represent a certain range of distance, so that when the user A finds the feature according to the two-dimensional coordinate, whether the finding mode is correct or not can be confirmed when seeing the same environmental feature.
In this embodiment, when verifying, the signal transmission module calibrates the transmission coverage of the first pairing code, compares the transmission coverage with the transmission coverage of the received second pairing code, and if the transmission coverage of the second pairing code falls within the transmission coverage of the first pairing code, the verification passes; otherwise, the verification fails; the plausibility range also relates to the distance of the two-dimensional coordinates, since the range may fluctuate and be unstable.
In this embodiment, the mobile terminal further includes a voice module 5, where the voice module 5 is configured to receive voice of a user, convert the voice into a voice electrical signal, and transmit the voice electrical signal through the signal transmission module, and the voice module 5 is provided with a speaker unit 51, and the speaker unit is configured to play the voice electrical signal output from another communication terminal.
In this embodiment, the main control module includes a storage unit, and the storage unit is used for storing the moving path of the communication terminal; under the condition of no map reference system, after the bidirectional ad hoc network communication is started, the traveling position of the user is recorded, so that a certain regional route can be calibrated, and the user can perform basic judgment according to the starting point position and the traveling direction of the user by combining the displayed route.
In this embodiment, the live-action capture unit is one of a CCD camera, an RGB-D sensor, an RGB camera, an ultrasonic wave, a laser, an optical image sensor, a three-dimensional terrain detector, and the like.
Application example
A team member of a certain exploration team carries communication terminals and goes to an undeveloped mountain forest land for exploration, the team establishes a plurality of groups to enter the mountain forest land in different directions according to a 200m communication range of the system, the front-back traveling interval of each effect is 50m after entering the mountain, the requirement of each member for stopping due to hobbies or self body condition limitation is met, when a user A is 50m in front of the user B, the user B is lost due to dense jungles and too much turnout, the user B sends a first communication signal to carry out an interconnection request, the user B is located within a 100m communication radius range of the communication terminal of the user B, the interconnection confirmation of the user A and the interconnection confirmation of another team nearby are received, and when a sequencing unit of a signal transmission module sequences a plurality of interconnection terminals, the interconnection terminals of the user A are arranged at a first position, therefore, the user B can know that the user A is closest to the user B in the range, and then the user A can know that the user B stops at the intersection where the user A has already walked because the map library of the user B can be compared with the map library of the user A, and at the moment, the user B can be informed through a voice function and can also return to the intersection for guidance; even if the user A is in the original path range, the user A can mark the two-dimensional graph of the traveling path, so that the user A does not have the risk of getting lost; even after the return trip, the road can be confirmed by looking back through the stored map library, because the mountain forest is dense and the dangerous area is more, the interconnected terminal after the ad hoc network is established can confirm the safety states of the two parties, which is particularly important in fire rescue, and under the condition of lacking local people, the interconnected terminal is necessary to meet emergency to deal with various emergency situations.
The invention has the advantages that:
1) the two independent terminals are interconnected by adopting a ZigBee communication mode, and personal safety is confirmed by sharing respective images after interconnection;
2) the image characteristics of the two users can be compared, whether the traveling routes of the two users are consistent or not is confirmed, and the two users are prevented from getting lost;
3) and establishing a reference system under a blind map through a map training unit, and determining the positions of the communication terminals.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. An ad-hoc network terminal communication system applied to ad-hoc network interconnection of a plurality of communication terminals, wherein each of the communication terminals comprises:
the signal searching module responds to a first communication request of a user and sends the first pairing code to a coverage area in a ZigBee communication mode; the first pairing code is used for matching with other communication terminals;
the signal transmission module is used for receiving the second pairing codes sent by other communication terminals and verifying the second pairing codes, and data transmission is carried out after the verification is successful; or receiving data returned by other communication terminals after responding to the first pairing code;
the transmission data in the data transmission comprises user identity information stored in the main control module, a live-action map shot by the live-action capturing unit and the real-time altitude of the user.
2. The ad hoc network terminal communication system according to claim 1, further comprising a plurality of display modules, wherein when the signal receiving module verifies the authenticity successfully, each display module displays the user identity information, the live-action map and the real-time altitude transmitted from different communication terminals.
3. The ad hoc network terminal communication system according to claim 1, wherein the signal transmission module comprises a sorting unit, the sorting unit time-sorts the second pairing codes transmitted by the other communication terminals to identify the number of the other communication terminals capable of communicating within the coverage area.
4. The ad hoc network terminal communication system according to claim 3, wherein the main control module comprises a map training unit, the map training unit stores a map library shot by the live-action capturing unit, and performs feature comparison according to live-action maps of other communication terminals received by the signal transmission module to determine the association relationship between the communication terminals and the road sections.
5. The ad hoc network terminal communication system according to claim 4, wherein the main control module further comprises a two-dimensional measuring unit, the two-dimensional measuring unit calibrates the fuzzy two-dimensional coordinates of other communication terminals according to the association relationship judged by the map training unit, and judges the relative distance of other communication terminals according to the time sequence of the sequencing unit.
6. The ad hoc network terminal communication system according to claim 1, wherein the signal transmission module calibrates the transmission coverage of the first pairing code during verification, compares the transmission coverage with the transmission coverage of the received second pairing code, and passes the verification if the transmission coverage of the second pairing code falls within the transmission coverage of the first pairing code; otherwise, the verification fails.
7. The ad hoc network terminal communication system according to claim 1, further comprising a voice module, wherein the voice module is configured to receive a voice of a user, convert the voice into a voice electrical signal, and transmit the voice electrical signal through the signal transmission module.
8. The ad hoc network terminal communication system according to claim 7, wherein the voice module is provided with a speaker unit for playing a voice electric signal output from other communication terminals.
9. The ad hoc network terminal communication system according to claim 1, wherein the main control module comprises a storage unit, and the storage unit is used for storing a moving path of the communication terminal.
10. The ad hoc network terminal communication system according to claim 1, wherein the live-action grabber is one of a CCD camera, an RGB-D sensor, an RGB camera, an ultrasonic wave, a laser, an optical image sensor, a three-dimensional terrain detector.
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