CN114422942B - Mobile emergency communication system based on wireless ad hoc network technology - Google Patents
Mobile emergency communication system based on wireless ad hoc network technology Download PDFInfo
- Publication number
- CN114422942B CN114422942B CN202210093205.3A CN202210093205A CN114422942B CN 114422942 B CN114422942 B CN 114422942B CN 202210093205 A CN202210093205 A CN 202210093205A CN 114422942 B CN114422942 B CN 114422942B
- Authority
- CN
- China
- Prior art keywords
- information
- emergency communication
- mobile emergency
- hoc network
- mobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 308
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008520 organization Effects 0.000 claims abstract description 5
- 238000010295 mobile communication Methods 0.000 claims description 39
- 230000002159 abnormal effect Effects 0.000 claims description 32
- 230000005856 abnormality Effects 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 19
- 230000006855 networking Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 11
- 230000004044 response Effects 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 5
- 230000007774 longterm Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000007726 management method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/22—Traffic simulation tools or models
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Public Health (AREA)
- Mobile Radio Communication Systems (AREA)
- Alarm Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
A mobile emergency communication system based on a wireless ad hoc network technology belongs to the technical field of mobile emergency communication of the wireless ad hoc network technology. The invention solves the problems that the existing emergency communication equipment can not give accurate site information and rescue information to site rescue workers and a control command center in time, and has high realization cost and single function. The mobile emergency communication system comprises a command control center, mobile emergency communication equipment and communication terminal equipment, wherein the command control center is used for deciding and commanding sudden accidents, and transmitting deployment information to on-site rescue workers or organization workers for rescue; the command control center establishes communication links with each mobile emergency communication device in an ad hoc network or public network access mode, and the communication terminal device actively or passively establishes communication links with the mobile emergency communication device. The method can be applied to emergency communication of accident sites.
Description
Technical Field
The invention belongs to the technical field of mobile emergency communication of wireless ad hoc network technology, and particularly relates to a mobile emergency communication system based on the wireless ad hoc network technology.
Background
In the rescue process of sudden natural disasters and artificial sudden emergency accidents, the communication plays a vital role, so how to quickly establish a set of efficient communication system so as to ensure the stable communication of emergency commanders, rescue workers and disaster-stricken workers is an important problem of emergency treatment.
Currently, the mainstream emergency communication equipment mainly adopts mobile emergency communication, satellite communication or a single ad hoc network technology, but all the technologies have obvious defects, and the requirements of complex accident rescue sites are difficult to meet. For example: the emergency communication system based on the existing mobile communication network has low flexibility, the communication capacity of the sudden disaster site is often unpredictable, and communication blockage is extremely easy to cause, so that effective information transmission is difficult to ensure, and meanwhile, effective communication service is difficult to provide by the existing mobile communication network in the areas where communication is destroyed or partially remote. Although the emergency communication system based on satellite communication is long in transmission distance and high in reliability, the emergency communication system is high in construction and maintenance cost, has a certain hardware foundation and needs the cooperative cooperation of a large number of professional technicians. The single ad hoc network communication equipment is difficult to establish a communication link with a common equipment terminal in the rescue process, can only rely on a single private network to communicate, faces complex and changeable accident sites, is not beneficial to rescue workers to master the omnibearing information of an accident area, and seriously affects the deployment and arrangement of the rescue workers.
In summary, the existing emergency communication device cannot timely give accurate field information and rescue information to the field rescue personnel and the control command center, and has high implementation cost and single function, so in order to solve the above problems, it is necessary to provide a mobile emergency communication system which can timely give accurate field information and rescue information to the field rescue personnel and the control command center, and has low implementation cost.
Disclosure of Invention
The invention aims to solve the problems that the existing emergency communication equipment cannot timely give accurate field information and rescue information to field rescue workers and a control command center, and is high in implementation cost and single in function.
The technical scheme adopted by the invention for solving the technical problems is as follows: a mobile emergency communication system based on a wireless ad hoc network technology, the system comprising a command control center, mobile emergency communication equipment and communication terminal equipment, wherein:
the mobile emergency communication equipment is arranged in an accident area, is used as a relay node for emergency communication and is used for acquiring environment information and accident information in sudden accidents in real time;
The command control center is arranged in a safety area outside the accident area and is used for decision and command of the sudden accident; the command control center establishes communication links with each mobile emergency communication device in an ad hoc network or public network access mode;
the communication terminal equipment actively or passively establishes a communication link with the mobile emergency communication equipment;
the mobile emergency communication equipment comprises a central processor module, an information acquisition module, an information display module, a network access module, a special MESH network transceiver module, a transceiver antenna module and a satellite positioning module;
the central processor module integrates a storage unit, a control unit, a network processor unit and a data processor unit;
the storage unit stores computer instructions, and the control unit controls the network processor unit and the data processor unit to execute the computer instructions;
the information acquisition module comprises a sensor unit, wherein the sensor unit is used for monitoring environment information around the mobile emergency communication equipment and sending the monitored abnormal environment information and the position information of the mobile emergency communication equipment to the command control center through an ad hoc network communication link;
The information display module is used for displaying the monitored abnormal information;
the special MESH network transceiver module is used for establishing an ad hoc network communication link between the mobile emergency communication equipment and the communication terminal equipment and forwarding data information;
the network access module comprises a WIFI unit, wherein the WIFI unit provides a network interface for the communication terminal equipment and is used for the communication terminal equipment to transmit text, image and voice auxiliary information back; when the communication terminal returns information, the storage unit caches the returned information, and the WIFI unit gives response information which has received the returned information to the communication terminal;
the satellite positioning module is called to acquire the position information of the communication terminal, the network processor unit sends the position information and the return information of the communication terminal to the command control center through an ad hoc network communication link, and the command control center transmits deployment information to on-site rescue workers or organization workers for rescue;
the transceiver antenna module is used for monitoring the channel state of the communication link.
Further, the sensor unit is used for monitoring the surrounding environment information of the mobile emergency communication equipment and sending the monitored abnormal environment information and the position information of the mobile emergency communication equipment to the command control center through an ad hoc network communication link; the specific process is as follows:
When the sensor unit detects an abnormality, the information display module displays an environment abnormality, the monitored abnormality information is preprocessed by the data processor unit to judge the abnormality type, and the network processor unit marks the abnormality data type by using a datatype bit in a frame header of the MAC frame;
and calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, caching the sensor monitoring data and the position information by utilizing a storage unit, packaging the position information and the sensor data information by a network processor unit, and then transmitting the packaged position information and the packaged sensor data information to a command control center through an ad hoc network communication link, wherein the command control center performs deployment.
Further, the mobile emergency communication equipment is carried to an accident area through an unmanned aerial vehicle and an unmanned aerial vehicle, carried by a rescue worker to the accident area, or arranged in the accident area through a temporary fixing device point.
Further, the information acquisition module further comprises a camera unit, the camera unit is used for monitoring accident information near the mobile emergency communication equipment in real time, when abnormality is found, the video data information is transmitted to the data processor unit for processing and judging, and the storage unit caches the video data;
And calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, sending the position information and the video data information to a command control center through an ad hoc network communication link, making a decision by the command control center, and broadcasting abnormal information through the ad hoc network communication link.
Further, the communication terminal equipment comprises a handheld terminal of a rescue worker, a mobile phone of a disaster-stricken user, a personal computer and an interphone, the satellite positioning module is a GPS or Beidou navigation, and the information display module comprises a warning lamp, an individual handheld display and a loudspeaker.
Further, the network access module further includes a mobile communication unit, where the mobile communication unit is a second generation mobile communication unit, a third generation mobile communication unit, a fourth generation mobile communication unit, a fifth generation mobile communication unit or a long term evolution unit, and the mobile communication unit is used for broadcasting disaster information and rescue information.
Further, the sensor unit includes a temperature sensor, a gas smoke sensor, and a pressure sensor.
Further, the establishment process of the ad hoc network communication link is as follows:
step one, each mobile emergency communication device realizes an ad hoc network through a special MESH network transceiver module, and an ad hoc network communication link is established;
Step two, the command control center broadcasts network test information and detects the networking state of each mobile emergency communication device;
the specific process of the second step is as follows:
if all the mobile emergency communication devices answer the test information, the ad hoc network covers the whole accident area, and the step three is continuously executed; otherwise, if the mobile emergency communication equipment which does not answer the test information exists, the ad hoc network does not cover the whole accident area, and the fifth step is executed;
step three, each mobile emergency communication device starts a function test, judges whether each module working state of the mobile emergency communication device is normal, and if the working state of each module is normal, continues to execute step four; otherwise, reporting the abnormal information to a command control center through an ad hoc network communication link, and making a decision and issuing an instruction by the command control center;
step four, carrying mobile emergency communication equipment by rescue personnel to enter an accident area for rescue operation;
and fifthly, the command control center continuously arranges the mobile emergency communication equipment according to the networking condition, and after arranging the new mobile emergency communication equipment, the command control center detects the newly added mobile emergency communication equipment through the special MESH network transceiver module and updates the route until the ad hoc network covers the whole accident area, and then the third step is executed.
Further, the judging of the state of the ad hoc network communication link and the processing flow of the abnormal state are as follows:
step 1, judging whether a routing table in the mobile emergency communication equipment is empty, if not, indicating that the ad hoc network communication link of the mobile emergency communication equipment is normal; if the communication link is empty, the ad hoc network communication link of the mobile emergency communication equipment is abnormal, and the step 2 is executed;
step 2, the network processor unit of the mobile emergency communication equipment issues a route searching instruction, the antenna sends route searching information, if the response of other mobile emergency communication equipment is received, namely the route searching is successful, step 6 is executed, otherwise, step 3 is executed;
step 3, the information display module displays the ad hoc network abnormality or makes a corresponding prompt reaction;
step 4, the satellite positioning module acquires the position information of the current ad hoc network failure and stores the position information;
step 5, changing the positions of other mobile emergency communication equipment, and executing step 2;
step 6, the information display module stops displaying network abnormality, the satellite positioning module obtains the current position information of each mobile emergency communication device, and the obtained position information is stored;
Step 7, the network processor unit updates the routing table and establishes an ad hoc network communication link;
step 8, the mobile emergency communication equipment packages and transmits the stored position information when the ad hoc network fails and the current position information back to the command control center through an ad hoc network communication link;
and 9, the command control center makes a decision according to the information sent by each mobile emergency communication device.
Still further, the system also includes a battery management module for providing a stable power supply for the mobile emergency communication device.
The beneficial effects of the invention are as follows:
the system of the invention realizes network coverage of the accident scene through the special MESH network ad hoc network link, simultaneously, the WIFI link is realized to provide a network access interface for the field terminal, and the mobile communication network actively broadcasts disaster information and rescue guidance to the field terminal, thereby solving the problem of single function of the existing emergency communication equipment. The mobile emergency communication system can provide timely, accurate and omnibearing communication guarantee for the accident scene. The mobile emergency communication device is in a modularized design, and communication devices with different power consumption can be selected for different carriers. Meanwhile, the storage unit can be used for caching data received by the node or data acquired by the information acquisition module, can effectively, reliably and efficiently guarantee information transmission during data transmission, can prevent the loss of received data during communication interruption, and can be used for caching data and instructions which occur frequently, and can be directly read from the caching unit during transmission, so that communication efficiency is improved. The data processor assembled in the equipment can quickly and efficiently realize preprocessing and classifying of data, is convenient for providing accurate field information and distress information for command control centers or rescue workers in time, and effectively reduces the cost of system realization.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of a mobile emergency communication device module;
FIG. 2 is a schematic diagram of a conventional mobile emergency communication device;
FIG. 3 is a schematic diagram of a low power version of a mobile emergency communication device;
FIG. 4 is an abstract model diagram of a mobile emergency communication system;
FIG. 5 is a schematic diagram of a communication link in a mobile emergency communication system;
FIG. 6 is a schematic diagram of network coverage in a mobile emergency communication system;
FIG. 7 is a flow chart of a mobile emergency communication system setup implementation;
FIG. 8 is a mobile emergency communication device node workflow diagram;
FIG. 9 is a flow chart of internal signal processing within a mobile emergency communication device node;
fig. 10 is a flowchart of a process of the mobile emergency communication device node ad hoc network module for the networking exception.
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.
Detailed description of the inventionthe present embodiment is described with reference to fig. 1, 3 and 4. The mobile emergency communication system based on the wireless ad hoc network technology in this embodiment includes a command control center, mobile emergency communication equipment and communication terminal equipment, wherein:
The mobile emergency communication equipment is arranged in an accident area, is used as a relay node for emergency communication and is used for acquiring environment information and accident information in sudden accidents in real time;
the command control center is arranged in a safety area outside the accident area and is used for decision and command of the sudden accident; the command control center establishes communication links with each mobile emergency communication device in an ad hoc network or public network access mode;
the communication terminal equipment actively or passively establishes a communication link with the mobile emergency communication equipment;
the mobile emergency communication equipment comprises a central processor module, an information acquisition module, an information display module, a network access module, a special MESH network transceiver module, a transceiver antenna module and a satellite positioning module;
the central processor module integrates a storage unit, a control unit, a network processor unit and a data processor unit;
the storage unit stores computer instructions, and the control unit controls the network processor unit and the data processor unit to execute the computer instructions to complete the functions of response networking, forwarding and moving;
the information acquisition module comprises a sensor unit, wherein the sensor unit is used for monitoring environment information around the mobile emergency communication equipment and sending the monitored abnormal environment information and the position information of the mobile emergency communication equipment to the command control center through an ad hoc network communication link;
The information display module is used for displaying the monitored abnormal information;
the special MESH network transceiver module is used for establishing an ad hoc network communication link between the mobile emergency communication equipment and the communication terminal equipment and forwarding data information;
the network access module comprises a WIFI unit, wherein the WIFI unit provides a network interface for the communication terminal equipment and is used for the communication terminal equipment to transmit text, image and voice auxiliary information back; when the communication terminal returns information, the storage unit caches the returned information, and the WIFI unit gives response information which has received the returned information to the communication terminal;
the satellite positioning module is called to acquire the position information of the communication terminal, the network processor unit sends the position information and the return information of the communication terminal to the command control center through an ad hoc network communication link, and the command control center transmits deployment information to on-site rescue workers or organization workers for rescue;
from the viewpoint of power consumption, the network access module is mainly mounted on equipment which can carry a large-capacity battery, such as a temporary fixed base station node or an unmanned vehicle;
the receiving and transmitting antenna module is used for monitoring the channel state of the communication link and transmitting communication signals.
The mobile emergency communication equipment can be carried on different carriers through a modularized design. The conventional mobile emergency communication device is shown in fig. 2, and can be optionally mounted on a temporary fixed base station node or an unmanned vehicle or other devices capable of carrying a large-capacity battery, and comprises a central processor module, a special MESH transceiver unit, a mobile communication unit, a WIFI radio frequency front-end unit, a Beidou/GPS unit, a camera unit, a sensor unit, a warning light unit and a power management unit.
The mobile emergency communication equipment with low power consumption version can be carried by unmanned aerial vehicle with limited battery energy or individual rescue workers and the like, and can be used for removing parts with larger energy consumption such as mobile communication units, camera modules and the like on the basis of a conventional version.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is that the sensor unit is configured to monitor environmental information around the mobile emergency communication device, and send the monitored abnormal environmental information and the location information of the mobile emergency communication device to the command control center through an ad hoc network communication link; the specific process is as follows:
when the sensor unit detects an abnormality, the information display module displays an environment abnormality, the monitored abnormality information is preprocessed by the data processor unit to judge the abnormality type, and the network processor unit marks the abnormality data type by using a datatype bit in a frame header of the MAC frame;
The network processor unit integrates a high-performance MAC/baseband/radio frequency sub-module and is developed into a wireless router, a wireless AP (WirelessAccess Point) and a wireless network bridge;
and calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, caching the sensor monitoring data and the position information by utilizing a storage unit, packaging the position information and the sensor data information by a network processor unit, and then transmitting the packaged position information and the packaged sensor data information to a command control center through an ad hoc network communication link, wherein the command control center performs deployment.
Other steps and parameters are the same as in the first embodiment.
And a third specific embodiment: the first or second embodiment is different from the first embodiment in that the mobile emergency communication device is carried to the accident area by an unmanned aerial vehicle or an unmanned aerial vehicle, carried by a rescue worker to the accident area, or arranged in the accident area by a temporary fixing device point.
Other steps and parameters are the same as in the first or second embodiment.
The specific embodiment IV is as follows: the difference between the embodiment and the one to three embodiments is that the information acquisition module further comprises a camera unit, the camera unit is used for monitoring accident information near the mobile emergency communication equipment in real time, when an abnormality is found (namely, help seeking personnel are monitored to seek help, new dangerous situations or other abnormal situations occur), the video data information is transmitted to the data processor unit for processing and judging, and the storage unit caches the video data;
And calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, sending the position information and the video data information to a command control center through an ad hoc network communication link, making a decision by the command control center, and broadcasting abnormal information through the ad hoc network communication link.
Other steps and parameters are the same as in one to three embodiments.
Fifth embodiment: the first to fourth difference between the embodiment and the specific embodiment is that the communication terminal device comprises a handheld terminal of a rescue worker, a mobile phone of a disaster-stricken user, a personal computer and an interphone, the satellite positioning module is a GPS or Beidou navigation, and the information display module comprises a warning lamp, an individual handheld display and a loudspeaker, and can be used for prompting through the information display device when the network is abnormal or the accident scene environment is changed.
Other steps and parameters are the same as in one to four embodiments.
Specific embodiment six: the difference between the present embodiment and one to fifth embodiments is that the network access module further includes a mobile communication unit, where the mobile communication unit is a second generation mobile communication unit, a third generation mobile communication unit, a fourth generation mobile communication unit, a fifth generation mobile communication unit, or a Long Term Evolution (LTE) unit, and the mobile communication unit is configured to broadcast disaster information and rescue information.
Other steps and parameters are the same as in one of the first to fifth embodiments.
Seventh embodiment: this embodiment differs from one to six of the embodiments in that the sensor unit includes a temperature sensor, a gas smoke sensor, and a pressure sensor.
Other steps and parameters are the same as in one of the first to sixth embodiments.
Eighth embodiment: this embodiment will be described with reference to fig. 5 and 6. The difference between this embodiment and one of the first to seventh embodiments is that the establishment procedure of the ad hoc network communication link is:
step one, each mobile emergency communication device realizes an ad hoc network through a special MESH network transceiver module, and an ad hoc network communication link is established;
step two, the command control center broadcasts network test information and detects the networking state of each mobile emergency communication device;
the specific process of the second step is as follows:
if all the mobile emergency communication devices answer the test information, the ad hoc network covers the whole accident area, and the step three is continuously executed; otherwise, if the mobile emergency communication equipment which does not answer the test information exists, the ad hoc network does not cover the whole accident area, and the fifth step is executed;
step three, each mobile emergency communication device starts a function test, judges whether each module working state of the mobile emergency communication device is normal, and if the working state of each module is normal, continues to execute step four; otherwise, reporting the abnormal information to a command control center through an ad hoc network communication link, and making a decision and issuing an instruction by the command control center;
Step four, carrying mobile emergency communication equipment by rescue personnel to enter an accident area for rescue operation;
and fifthly, the command control center continuously arranges the mobile emergency communication equipment according to the networking condition, and after arranging the new mobile emergency communication equipment, the command control center detects the newly added mobile emergency communication equipment through the special MESH network transceiver module and updates the route until the ad hoc network covers the whole accident area, and then the third step is executed.
Other steps and parameters are the same as those of one of the first to seventh embodiments.
Detailed description nine: the difference between this embodiment and one to eighth embodiments is that the determination of the ad hoc network communication link status and the processing flow of the abnormal status are as follows:
step 1, judging whether a routing table in mobile emergency communication equipment is empty, if not, indicating that the mobile emergency communication equipment is already connected into an ad hoc network, and that an ad hoc network communication link is normal; if the mobile emergency communication equipment is empty, the mobile emergency communication equipment is isolated, the ad hoc network communication link is abnormal, and the step 2 is executed;
step 2, the network processor unit of the mobile emergency communication equipment issues a route searching instruction, the antenna sends route searching information, if the response of other mobile emergency communication equipment is received, namely the route searching is successful, step 6 is executed, otherwise, step 3 is executed;
Step 3, the information display module displays the ad hoc network abnormality or makes a corresponding prompt reaction;
step 4, the satellite positioning module acquires the position information of the current ad hoc network failure and stores the position information;
step 5, changing the positions of other mobile emergency communication equipment, and executing step 2;
in the step, the position of the mobile emergency communication equipment with changeable position is changed, and the mobile emergency communication equipment with unchangeable position does not need to be processed;
step 6, the information display module stops displaying network abnormality, the satellite positioning module obtains the current position information of each mobile emergency communication device, and the obtained position information is stored;
step 7, the network processor unit updates the routing table and establishes an ad hoc network communication link;
step 8, the mobile emergency communication equipment packages and transmits the stored position information when the ad hoc network fails and the current position information back to the command control center through an ad hoc network communication link;
and 9, the command control center makes a decision according to the information sent by each mobile emergency communication device.
Other steps and parameters are the same as in one to eight of the embodiments.
Detailed description ten: the difference between the embodiment and one of the first to ninth embodiments is that the system further includes a battery management module, and the battery management module is used for providing a stable power supply for the mobile emergency communication device, ensuring the normal operation of each module, and is equipped with an electric quantity monitoring system, and timely prompting when the electric quantity is low.
Other steps and parameters are the same as in one of the first to ninth embodiments.
The invention provides a mobile emergency communication system and a multifunctional portable mobile emergency communication device. The mobile emergency communication system consists of a command control center, mobile emergency communication equipment and terminal equipment, can realize temporary communication coverage on an accident scene, actively provides network access for terminals in the accident scene, monitors environmental information of the accident scene in real time, and can broadcast disaster information and rescue information to the terminal.
The mobile emergency communication system will be specifically described with reference to the accompanying drawings and specific embodiments.
In the first embodiment, as shown in fig. 7, a specific implementation manner of the mobile emergency communication system is as follows:
step 1: firstly, setting a command control center in a safety area outside an accident area, wherein the command control center can be selectively carried on a rescue vehicle or temporarily set up on a camp; secondly, setting an emergency communication ground node, such as a temporary base station, in a suitable area, wherein the emergency communication ground node is used as a core intermediate node in the ad hoc network, the emergency communication equipment can be provided with a large-capacity battery, and more functional modules are assembled, so that the ad hoc network can be realized through a special MESH networking unit, and public network access can be realized through a mobile communication unit, and communication guarantee is provided for the arrangement of other subsequent nodes; and finally, releasing mobile communication nodes carried by unmanned aerial vehicles, unmanned vehicles and the like, performing basic network coverage on the accident scene to a certain extent, monitoring the environment information of the accident scene, providing guarantee for subsequent personnel to enter the scene, taking power consumption into consideration, wherein the unmanned aerial vehicles often select the carried mobile emergency communication equipment with low power consumption version, are mainly responsible for data transfer and environment monitoring, and do not provide a public network access function.
Step 2: each emergency communication node realizes the ad hoc network through a special MESH network transceiver unit, and establishes an ad hoc network communication link.
Step 3: the command control center broadcasts network test information and detects the networking state of each node.
Step 4: judging whether the network covers the accident area, namely judging whether all nodes answer the test information, if so, representing successful networking, executing the step 5, and otherwise, executing the step 7.
Step 5: and each emergency communication device starts a function module test, judges whether each function module works normally, if not, the node reports abnormal information to the command control center through an ad hoc network communication link, and finally the command control center makes a decision and gives an instruction.
Step 6: rescue workers carry mobile emergency communication equipment to enter an accident area to carry out rescue actions.
Step 7: after the command control center continuously arranges the mobile emergency communication nodes according to the networking condition and arranges new nodes, each node automatically detects the newly added nodes and updates the route through a special MESH network transceiver unit and a network processor, if the networking is successful and the network coverage is carried out on the accident area, the mobile emergency communication system is successfully established, otherwise, the step 7 is continuously executed.
In the second embodiment, as shown in fig. 8, a specific implementation manner of each functional module of a node in the mobile emergency communication system is as follows:
step A1: after the command control center and each mobile emergency device are arranged, each node establishes an ad hoc network link through a special MESH transceiver module to realize networking, and then each functional module of the node starts working, namely, steps B1, C1, D1 and E1 are executed.
Step B1: and B2, monitoring the surrounding environment in real time by the camera module, if the help-seeking personnel are monitored to seek help, a new dangerous situation or other abnormal situations occur, executing the step B2, and otherwise, continuing to execute the step B1.
Step B2: the data processor processes the video data, when an object moves, the video information starts to be recorded, and the storage unit caches the video data, so that the data can be conveniently sent out later.
Step B3: the central processor module invokes the satellite positioning module to determine the location information for the node.
Step B3: the central processor module transmits the positioning information and the video data to the command control information via an ad hoc network communication link.
Step B4: and B1, the command control center makes a decision by combining the information, broadcasts the decision information to each node or unicasts the decision information to a certain rescue node through an ad hoc network communication link, and then the node continues to execute the step B1.
Step C1: the sensor monitors surrounding environment information in real time, and judges whether the surrounding environment is abnormal, for example: and in the fire, a gas smoke sensor is selected to monitor the condition of surrounding gas smoke, if the gas smoke concentration exceeds a set threshold value, the gas smoke is marked as abnormal, and an abnormal processing flow is executed. If abnormal conditions occur, executing the step C2, otherwise, displaying the normal environment by the corresponding display component of the information display module.
Step C2: the corresponding display part of the information display module displays abnormal environments, such as flashing warning lamps, individual hand-held display screen prompts and the like, and reminds surrounding nodes or personnel.
Step C3: the data processor unit preprocesses the monitored data information, judges the type of the sensor by judging which IO interface the abnormality comes from, so as to determine the type of the abnormality, and the network processor marks the type of the data by using the datatype bit in the MAC frame header and caches the sensor data by using the storage unit.
Step C4: the central processor module invokes the satellite positioning module to position the node. And caching the positioning information and the sensor data information. The network processor unit packages the information and transmits the data information to the command control center and other destination nodes by using an ad hoc network communication link.
Step C5: and C1, after receiving the information, the command control center makes corresponding deployment, and then continues to execute the step C1.
Step D1: the WIFI module radiates signals, provides a network interface for terminal equipment in an accident area, and allows the terminal equipment to transmit back auxiliary information such as characters, images, voices and the like.
Step D2: and the central processor module judges whether the terminal equipment returns information, if so, the step D3 is executed, and if not, the step D1 is continuously executed.
Step D3: the storage unit caches the data returned by the terminal equipment.
Step D4: the WIFI unit gives response information to the terminal equipment, reminds the terminal, the emergency communication node receives the information and processes the information, and meanwhile sends accident information and rescue guidance to the terminal, so that personnel safety is ensured.
Step D5: the central processor module calls the satellite positioning module to acquire node position information.
Step D6: the node network processor module sends information to the command control center and other destination nodes through a special MESH ad hoc network link.
Step D7: and D1, after receiving the information, the command control center deploys the information, unicasts the deployment information to on-site rescue workers or organization workers for rescue, and then continues to execute the step D1.
Step E1: the mobile communication module broadcasts disaster information and rescue guidelines to all nearby terminals at regular intervals, the mobile communication module can provide public network access functions for terminal equipment on one hand, and on the other hand, the nodes carrying the mobile communication units can establish communication links with a command control center or other nodes carrying the mobile communication units through the mobile communication module by utilizing the public network, so that the mobile communication system in an accident area is restored to a certain extent. For power consumption, the mobile communication module is often carried by a fixed emergency communication node, an unmanned vehicle or other node capable of placing a large-capacity battery.
By executing the steps, the mobile emergency communication device provided by the embodiment of the invention realizes the environment monitoring on the accident scene through the camera unit and the sensor unit of the information acquisition module, realizes the function of providing network access for terminal equipment in the accident area through the WIFI unit, realizes the mobile communication link for simultaneously establishing and recovering the accident area when broadcasting disaster information and rescue information through the mobile communication unit, establishes a special ad hoc network communication link through the ad hoc network module, and mainly transmits data information in the accident area through the ad hoc network communication link, so that a set of mobile emergency communication system capable of temporarily communicating is reestablished in the accident area with communication interruption. The distribution condition or disaster situation of disaster area personnel can be quickly known by the outside, and information such as disaster relief scheduling instructions, evacuation path planning schemes and the like can be issued to the disaster area.
The dedicated MESH network communication link, the WIFI module communication link, and the mobile communication network link are in different communication channels.
In the third embodiment, as shown in fig. 9, the processing steps of the internal signal of the mobile emergency communication device node are as follows:
step S101: the receiving and transmitting antenna module monitors the channel states of the WIFI communication link, the special self-organizing network communication link and the mobile communication network link respectively, namely when the intensity of a signal received by the antenna is larger than a threshold set by equipment, the antenna considers that a current channel exists, the antenna starts to receive the signal, and data information sent by a source node can be received in time through continuously monitoring the channel states of the channel. If a signal is detected, step S102 is performed, otherwise step S101 is continued.
Step S102: the network processor processes the signal, judges whether the destination address ip_addr in the frame header of the frame received by the MAC layer is matched with the own IP address, namely, judges whether the data is sent to the own, extracts the data if the data is sent to the own, then executes step S103, if the data is not sent to the own, continues to judge whether the next hop node IP address next_addr of the frame is the own IP address, if the data is forwarded, otherwise, discards the data, and then executes step S101.
Step S103: the data processor receives the data type datatype in the frame header of the frame through the MAC, and determines the data information type, for example: control information, data information, etc.; the storage unit stores data information and does not process control information and the like. The storage unit stores data, so that the situation that the data is lost when the communication is interrupted by the node can be prevented, and on the other hand, the data processor can directly read the data from the storage unit and transmit the data to the network processor for processing and transmitting the data, so that transmission collision and blockage in a network can be effectively reduced, and the throughput of a communication system is improved.
Step S104: after the data processor finishes processing, the next operation is performed, for example: executing the control command in the control information, caching the data information, and the like.
In the fourth embodiment, as shown in fig. 10, the specific implementation steps of the mobile emergency communication device node ad hoc network module for handling the networking abnormal situation are as follows:
step 1: the nodes establish an ad hoc network communication link through a special MESH network transceiver unit in the ad hoc network module, and automatically ascertain routing nodes and update routes.
Step 2: judging whether a routing table in the emergency communication equipment node is empty or not, if not, indicating that the node is already connected into the ad hoc network, can communicate with other nodes, and has normal ad hoc network links; if the node is empty, the node is isolated, no communication link is established with other nodes, and step 3 is executed.
Step 3: the network processor module of the node issues a route searching instruction, and the antenna sends the route searching information. If the responses of other nodes are received within a certain time, namely the route searching is successful, the step 7 is executed, otherwise, the step 4 is executed.
Step 4: the information display unit displays abnormal networking or makes corresponding prompt reaction.
Step 5: the satellite positioning module acquires the position information of the current networking failure and stores the information.
Step 6: for nodes that can move, such as: unmanned vehicles, individual rescue workers and the like, the nodes move, then step 3 is executed, and step 3 is directly executed for the fixed emergency communication nodes.
Step 7: the information display module stops displaying the network anomaly. The satellite positioning module acquires current position information of the node and stores the position information.
Step 8: the network processor updates the routing table and establishes an ad hoc network communication link.
Step 9: the node transmits the position information of the previous network failure and the position information of the current network success to the command control center through the ad hoc network communication link, and deletes the position information from the storage unit to release the storage space.
Step 10: and the command control center makes a decision on the information sent by the nodes.
The above examples of the present invention are only for describing the calculation model and calculation flow of the present invention in detail, and are not limiting of the embodiments of the present invention. Other variations and modifications of the above description will be apparent to those of ordinary skill in the art, and it is not intended to be exhaustive of all embodiments, all of which are within the scope of the invention.
Claims (9)
1. The mobile emergency communication system based on the wireless ad hoc network technology is characterized by comprising a command control center, mobile emergency communication equipment and communication terminal equipment, wherein:
the mobile emergency communication equipment is arranged in an accident area, is used as a relay node for emergency communication and is used for acquiring environment information and accident information in sudden accidents in real time;
the command control center is arranged in a safety area outside the accident area and is used for decision and command of the sudden accident; the command control center establishes communication links with each mobile emergency communication device in an ad hoc network or public network access mode;
The communication terminal equipment actively or passively establishes a communication link with the mobile emergency communication equipment;
the mobile emergency communication equipment comprises a central processor module, an information acquisition module, an information display module, a network access module, a special MESH network transceiver module, a transceiver antenna module and a satellite positioning module;
the central processor module integrates a storage unit, a control unit, a network processor unit and a data processor unit;
the storage unit stores computer instructions, and the control unit controls the network processor unit and the data processor unit to execute the computer instructions;
the information acquisition module comprises a sensor unit, wherein the sensor unit is used for monitoring environment information around the mobile emergency communication equipment and sending the monitored abnormal environment information and the position information of the mobile emergency communication equipment to the command control center through an ad hoc network communication link;
the establishment process of the ad hoc network communication link is as follows:
step one, each mobile emergency communication device realizes an ad hoc network through a special MESH network transceiver module, and an ad hoc network communication link is established;
step two, the command control center broadcasts network test information and detects the networking state of each mobile emergency communication device;
The specific process of the second step is as follows:
if all the mobile emergency communication devices answer the test information, the ad hoc network covers the whole accident area, and the step three is continuously executed; otherwise, if the mobile emergency communication equipment which does not answer the test information exists, the ad hoc network does not cover the whole accident area, and the fifth step is executed;
step three, each mobile emergency communication device starts a function test, judges whether each module working state of the mobile emergency communication device is normal, and if the working state of each module is normal, continues to execute step four; otherwise, reporting the abnormal information to a command control center through an ad hoc network communication link, and making a decision and issuing an instruction by the command control center;
step four, carrying mobile emergency communication equipment by rescue personnel to enter an accident area for rescue operation;
step five, the command control center continues to arrange mobile emergency communication equipment according to networking conditions, after arranging new mobile emergency communication equipment, the newly added mobile emergency communication equipment is detected through a special MESH network transceiver module and a route is updated, and the step three is executed until the whole accident area is covered by the ad hoc network;
the information display module is used for displaying the monitored abnormal information;
The special MESH network transceiver module is used for establishing an ad hoc network communication link between the mobile emergency communication equipment and the communication terminal equipment and forwarding data information;
the network access module comprises a WIFI unit, wherein the WIFI unit provides a network interface for the communication terminal equipment and is used for the communication terminal equipment to transmit text, image and voice auxiliary information back; when the communication terminal returns information, the storage unit caches the returned information, and the WIFI unit gives response information which has received the returned information to the communication terminal;
the satellite positioning module is called to acquire the position information of the communication terminal, the network processor unit sends the position information and the return information of the communication terminal to the command control center through an ad hoc network communication link, and the command control center transmits deployment information to on-site rescue workers or organization workers for rescue;
the transceiver antenna module is used for monitoring the channel state of the communication link.
2. The mobile emergency communication system based on the wireless ad hoc network technology according to claim 1, wherein the sensor unit is configured to monitor environmental information around the mobile emergency communication device, and send the monitored abnormal environmental information and the location information of the mobile emergency communication device to the command control center through an ad hoc network communication link; the specific process is as follows:
When the sensor unit detects an abnormality, the information display module displays an environment abnormality, the monitored abnormality information is preprocessed by the data processor unit to judge the abnormality type, and the network processor unit marks the abnormality data type by using a datatype bit in a frame header of the MAC frame;
and calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, caching the sensor monitoring data and the position information by utilizing a storage unit, packaging the position information and the sensor data information by a network processor unit, and then transmitting the packaged position information and the packaged sensor data information to a command control center through an ad hoc network communication link, wherein the command control center performs deployment.
3. The mobile emergency communication system based on the wireless ad hoc network technology according to claim 2, wherein the mobile emergency communication device is carried to the accident area by an unmanned aerial vehicle, carried by a rescuer, or placed in the accident area by a temporary fixing device point.
4. The mobile emergency communication system based on the wireless ad hoc network technology according to claim 3, wherein the information acquisition module further comprises a camera unit, the camera unit is used for monitoring accident information near the mobile emergency communication equipment in real time, when abnormality is found, the video data information is transmitted to the data processor unit for processing and judging, and the storage unit caches the video data;
And calling a satellite positioning module to determine the position information of the mobile emergency communication equipment, sending the position information and the video data information to a command control center through an ad hoc network communication link, making a decision by the command control center, and broadcasting abnormal information through the ad hoc network communication link.
5. The mobile emergency communication system based on the wireless ad hoc network technology according to claim 4, wherein the communication terminal equipment comprises a hand-held terminal of a rescue worker, a mobile phone of a disaster-stricken user, a personal computer and an interphone, the satellite positioning module is a GPS or Beidou navigation, and the information display module comprises a warning lamp, an individual hand-held display and a loudspeaker.
6. The mobile emergency communication system according to claim 5, wherein the network access module further comprises a mobile communication unit, the mobile communication unit is a second generation mobile communication unit, a third generation mobile communication unit, a fourth generation mobile communication unit, a fifth generation mobile communication unit or a long term evolution unit, and the mobile communication unit is used for broadcasting disaster information and rescue information.
7. The mobile emergency communication system based on wireless ad hoc network technology according to claim 6, wherein said sensor unit comprises a temperature sensor, a gas smoke sensor and a pressure sensor.
8. The mobile emergency communication system based on the wireless ad hoc network technology according to claim 7, wherein the determining of the ad hoc network communication link state and the processing flow of the abnormal state are as follows:
step 1, judging whether a routing table in the mobile emergency communication equipment is empty, if not, indicating that the ad hoc network communication link of the mobile emergency communication equipment is normal; if the communication link is empty, the ad hoc network communication link of the mobile emergency communication equipment is abnormal, and the step 2 is executed;
step 2, the network processor unit of the mobile emergency communication equipment issues a route searching instruction, the antenna sends route searching information, if the response of other mobile emergency communication equipment is received, namely the route searching is successful, step 6 is executed, otherwise, step 3 is executed;
step 3, the information display module displays the ad hoc network abnormality or makes a corresponding prompt reaction;
step 4, the satellite positioning module acquires the position information of the current ad hoc network failure and stores the position information;
step 5, changing the positions of other mobile emergency communication equipment, and executing step 2;
step 6, the information display module stops displaying network abnormality, the satellite positioning module obtains the current position information of each mobile emergency communication device, and the obtained position information is stored;
Step 7, the network processor unit updates the routing table and establishes an ad hoc network communication link;
step 8, the mobile emergency communication equipment packages and transmits the stored position information when the ad hoc network fails and the current position information back to the command control center through an ad hoc network communication link;
and 9, the command control center makes a decision according to the information sent by each mobile emergency communication device.
9. The mobile emergency communication system of claim 8, further comprising a battery management module for providing a stable power supply to the mobile emergency communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093205.3A CN114422942B (en) | 2022-01-26 | 2022-01-26 | Mobile emergency communication system based on wireless ad hoc network technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210093205.3A CN114422942B (en) | 2022-01-26 | 2022-01-26 | Mobile emergency communication system based on wireless ad hoc network technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114422942A CN114422942A (en) | 2022-04-29 |
| CN114422942B true CN114422942B (en) | 2024-04-09 |
Family
ID=81277922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210093205.3A Active CN114422942B (en) | 2022-01-26 | 2022-01-26 | Mobile emergency communication system based on wireless ad hoc network technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114422942B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114584204B (en) * | 2022-05-06 | 2022-07-29 | 山东致群信息技术股份有限公司 | Emergency command system |
| CN116233035B (en) * | 2023-02-15 | 2023-11-17 | 应急管理部沈阳消防研究所 | Digital fire-fighting individual communication system and data perception acquisition communication method |
| CN116887397B (en) * | 2023-07-10 | 2024-05-24 | 深圳市天工测控技术有限公司 | Beidou geological disaster monitoring and rescue system based on ad hoc network |
| CN116782139B (en) * | 2023-08-18 | 2023-11-07 | 武汉七环电气股份有限公司 | Explosion-proof wireless emergency communication method and system |
| CN117082649B (en) * | 2023-10-18 | 2023-12-19 | 常州嘉昊广播电视设备有限公司 | Data transmission system and method based on 5G technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009159457A (en) * | 2007-12-27 | 2009-07-16 | Toshiba Corp | Ad hoc communication system, communication method in the same, and computer program |
| CN109151793A (en) * | 2018-08-09 | 2019-01-04 | 南京信息工程大学 | More nets based on cloud computing refine emergency management and rescue command system |
| CN209134399U (en) * | 2018-12-25 | 2019-07-19 | 武汉高德安信科技有限公司 | A kind of Multi net voting individual reconnaissance command system based on ad hoc network |
| CN211670989U (en) * | 2020-01-18 | 2020-10-13 | 河南森源鸿马电动汽车有限公司 | Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network |
-
2022
- 2022-01-26 CN CN202210093205.3A patent/CN114422942B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009159457A (en) * | 2007-12-27 | 2009-07-16 | Toshiba Corp | Ad hoc communication system, communication method in the same, and computer program |
| CN109151793A (en) * | 2018-08-09 | 2019-01-04 | 南京信息工程大学 | More nets based on cloud computing refine emergency management and rescue command system |
| CN209134399U (en) * | 2018-12-25 | 2019-07-19 | 武汉高德安信科技有限公司 | A kind of Multi net voting individual reconnaissance command system based on ad hoc network |
| CN211670989U (en) * | 2020-01-18 | 2020-10-13 | 河南森源鸿马电动汽车有限公司 | Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network |
Non-Patent Citations (1)
| Title |
|---|
| 无线Mesh网络技术在应急救援通信保障中的应用研究;李俊锋，等;武警学院学报;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114422942A (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114422942B (en) | Mobile emergency communication system based on wireless ad hoc network technology | |
| US10313446B2 (en) | System and method for fire ground entry control based on internet of things | |
| CN102006574B (en) | Wireless self-organized network-based integrated heterogeneous emergency communication network | |
| US9426834B2 (en) | Method and apparatus for persistent communications, interoperability and situational awareness in the aftermath of a disaster | |
| US8665087B2 (en) | Wearable or portable device including sensors and an image input for establishing communications interoperability and situational awareness of events at an incident site | |
| CN211670989U (en) | Emergency rescue field communication system based on GPS Beidou positioning and MESH wireless ad hoc network | |
| CN105510877B (en) | Indoor positioning navigation system and monitoring method based on feeder line | |
| CN108471449B (en) | Auxiliary positioning system and auxiliary positioning method for sharing bicycle | |
| US20200100246A1 (en) | Unified facility communications system with device location | |
| CN105162890A (en) | Emergency rescue intelligent individual soldier communication system | |
| US7265683B2 (en) | Roadside-based communication system and method | |
| CN111399419A (en) | Emergency rescue positioning system based on intelligent emergency evacuation system | |
| CN107959921A (en) | A kind of positioning via network system and method based on BLE technologies | |
| CN107820220A (en) | A kind of mine emergency rescues multi-functional communications node | |
| CN107277792A (en) | A kind of emergency communication method | |
| CN112040426A (en) | Single carrier ad hoc network communication method and system | |
| CN111612305A (en) | Safety production scheduling supervisory system platform | |
| CN115942292A (en) | Mobile emergency communication system based on wireless ad hoc network technology | |
| CN101056236A (en) | Radio Mesh MAN architecture | |
| CN205901741U (en) | Communication system | |
| CN206041995U (en) | Novel base station | |
| CN212231740U (en) | Desert rescue system based on wireless Mesh network | |
| CN112616195A (en) | Emergency all-media communication system based on wireless ad hoc network technology and implementation method thereof | |
| CN215222184U (en) | Multi-link wireless signal sniffer and wireless signal sniffer communication system | |
| CN118278781B (en) | Rural emergency command information system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |