CN117499905B - Emergent relief of disaster communication system based on LDSW technique - Google Patents
Emergent relief of disaster communication system based on LDSW technique Download PDFInfo
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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
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W4/02—Services making use of location information
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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
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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Abstract
The invention relates to the field of communication, in particular to an LDSW technology-based emergency disaster relief communication system, which comprises an emergency base station, an emergency gateway and a central processing unit, wherein the emergency base station is connected with the emergency gateway; the emergency base station is used for establishing a temporary communication network and serving as a communication relay station; the emergency gateway is used for realizing information conversion between different communication devices; the central processing unit is used for outputting disaster relief instructions to the emergency gateway. According to the invention, the LDSW technology is adopted to enable the base station and the gateway to work at an ultralow duty ratio, so that energy conservation is facilitated, the LDSW technology can realize longer communication distance and multi-channel communication, high-efficiency communication can be performed between rescue workers and the command part in disaster areas with a larger range, and the command part can command a plurality of rescue workers and trapped workers at the same time.
Description
Technical Field
The invention relates to the field of communication, in particular to an emergency disaster relief communication system based on an LDSW technology.
Background
When facing natural disasters, emergencies or emergency rescue situations, an effective communication system is important for timely transmitting information, coordinating rescue actions and guaranteeing personnel safety. Conventional communication systems may face challenges in emergency disaster relief scenarios, such as network congestion, infrastructure damage, and power interruption, and thus a communication solution with low power consumption, high efficiency, and reliability is needed.
The prior art discloses a reconfigurable subsurface emergency disaster relief communication system and method based on parallel connection as disclosed in CN 115955658A. The system comprises a plurality of backpack RIS enhancement stations, a single-antenna disaster-affected user side and a vehicle-mounted base station, wherein each backpack RIS enhancement station comprises a single reconfigurable super surface, and each reconfigurable super surface comprises a plurality of reflecting units; the single-antenna disaster-affected user is used for transmitting communication signals to reconfigurable super surfaces of a plurality of parallel backpack RIS enhancement stations; each reconfigurable super surface is used for receiving an incident signal, adding phase shift vectors added to the incident signal, and reflecting the incident signal to the vehicle-mounted base station; the vehicle-mounted base station is used for receiving the reflected signals.
Another exemplary emergency disaster relief intelligent individual communication system disclosed in the prior art of CN105162890a comprises individual terminal nodes and mobile command center nodes, wherein more than 3 individual terminal nodes form an individual communication network, each individual terminal node comprises a wireless mobile terminal and a network terminal controller, each mobile command center node comprises a multifunctional routing device and a network background server, at least one mobile command center node performs networking communication with the individual terminal node, and at least two mobile command center nodes perform networking communication between the mobile command center nodes.
Looking again at an emergency disaster relief intelligent individual soldier system as disclosed in the prior art of CN105049484a, comprising a computer subsystem, a helmet subsystem, a communication subsystem, a navigation subsystem and an energy subsystem; the computer subsystem, the helmet subsystem, the communication subsystem and the navigation subsystem are all electrically connected with the energy subsystem, and the computer subsystem, the helmet subsystem and the navigation subsystem are all in signal connection with the communication subsystem.
At present, the communication system for emergency disaster relief generally has the problems of higher power consumption, higher cost and the like, and the invention is made in order to solve the common problems in the field.
Disclosure of Invention
The invention aims to provide an emergency disaster relief communication system based on an LDSW technology, aiming at the defects existing at present.
In order to overcome the defects in the prior art, the invention adopts the following technical scheme:
an LDSW technology-based emergency disaster relief communication system is characterized by comprising an emergency base station, an emergency gateway and a central processing unit; the emergency base station is used for establishing a temporary communication network and serving as a communication relay station; the emergency gateway is used for realizing information conversion between different communication devices; the central processing unit is used for outputting disaster relief instructions to the emergency gateway; the central processing unit comprises a rescue information acquisition module and an escape route acquisition module; the rescue information acquisition module is used for acquiring information of terrains or internal structures of the disaster relief area; the escape route acquisition module is used for generating an optimal escape route of trapped personnel according to the information acquired by the rescue information acquisition module, wherein: the escape route acquisition module acquires the route index of each exit position of the layer where the trapped person is located according to the following steps, and takes the route with the minimum corresponding route index as the optimal escape route:
=/>*/>；
wherein,the path index of the j exit position of the layer number of the trapped person is; />The distance from the current position of the trapped person to the j exit position of the layer number of the trapped person is the distance; n is the number of monitoring cameras through which trapped personnel pass from the current position to the jth exit position,/L>Obstacle weight obtained for the ith monitoring camera through which the trapped person passes from its current position to the jth exit position, wherein +.>=/>,/>For the number of pixels of the gray-scale image of the captured image of the ith monitoring camera, +.>The number of pixels occupied by the barrier in the gray level image of the shot image of the ith monitoring camera is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module; />For the feasibility weight of the current position of the trapped person from the j-th exit position of the layer number of the trapped person, when the j-th exit position is blocked by an obstacle, the trapped person is in the position of the j-th exit position>0, otherwise->1, whether the j-th exit position is blocked or not is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module.
Optionally, the emergency base station comprises a positioning module, an automatic control module, a driving module and a fault detection and repair module; the positioning module is used for positioning the mobile terminal of the user communicating with the base station; the automatic control module comprises an algorithm memory and a port and is used for automatically controlling the automatic movement of the emergency base station and the opening and closing of each part of the emergency base station; the driving module is used for driving the emergency base station to move; the fault detection and repair module is used for detecting whether each part of the emergency base station has faults or not and automatically repairing the parts after the faults occur.
Optionally, the emergency disaster relief communication system further comprises an LDSW intelligent terminal, wherein the LDSW intelligent terminal is used for receiving disaster area information and trapped person mobile phone signals and forwarding the signals to the emergency base station, and the LDSW intelligent terminal comprises an SoC integrated circuit, a trapped person signal receiving module, a disaster area information receiving module, a data conversion module and a disaster area signal sending module; the SoC integrated circuit is used for controlling each module of the LDSW intelligent terminal; the trapped person signal receiving module is used for receiving mobile phone signals of trapped persons; the disaster area information receiving module is used for acquiring images shot by the monitoring cameras in the disaster area and data of each sensor; the data conversion module is used for converting the image information received by the disaster area information and the sensor data into digital signals; the disaster area signal sending module is used for sending the digital signals converted by the data conversion module and the mobile phone signals received by the trapped person signal receiving module to the emergency base station.
Optionally, the emergency gateway is connected with the emergency base station through an NG interface, the emergency gateway comprises a satellite signal sending and receiving module, the satellite signal sending and receiving module is used for carrying out signal intercommunication with an operator core network through a satellite, and the emergency gateway is an LDSW gateway.
Optionally, the central processing unit further comprises an input end and an output end; the input end comprises an input table and a microphone, wherein the input table is used for receiving rescue instructions of the text and picture types input by the command part, and the microphone is used for receiving audio rescue instructions input by the command part; the output end is used for outputting the information acquired by the rescue information acquisition module and the rescue path acquired by the escape route acquisition module.
Optionally, the escape route acquisition module comprises a data arrangement unit, a calculation unit and a knowledge graph construction unit; the data sorting unit is used for sorting and storing the information acquired by the rescue information acquisition module; the calculation unit is used for executing various calculations required for acquiring the rescue route; the knowledge graph construction unit is used for displaying the data collated by the data collating unit and the rescue path acquired by the calculating unit in the form of a knowledge graph.
Optionally, the workflow of the emergency disaster relief communication system includes the following steps:
s1, setting an emergency disaster relief base station and an emergency disaster relief gateway near a disaster area;
s2, the LDSW intelligent terminal acquires various information in the disaster area, and forwards the information to an emergency gateway through an emergency base station and further to a rescue information acquisition module;
s3, the emergency base station locates the user terminal accessed to the emergency communication network through the locating module to obtain the location of the trapped person, and sends the location to the rescue information acquisition module;
s4, the escape route acquisition module generates an optimal escape route of the trapped person according to the information acquired by the rescue information acquisition module;
s5, the command part is communicated with the trapped person through the emergency gateway, sends the optimal escape route to the mobile terminal of the trapped person, and guides the trapped person to escape;
and S6, the command part is connected with the rescue workers through the emergency gateway, and the command part commands the rescue workers to carry out rescue work according to the knowledge graph generated by the knowledge graph construction module.
Optionally, the escape route obtaining module generates the optimal escape route of the trapped person, including the following steps:
s31, a command part staff marks an escape outlet of a disaster area on a satellite image displayed by a central processing unit, an escape route acquisition module judges whether trapped staff is inside a building according to a positioning result of a positioning module, if not, S32 is executed, otherwise S33 is executed;
s32, the computing unit obtains the shortest path of the trapped person to the escape exit through an A-algorithm, takes the shortest path as the shortest escape route of the trapped person and ends;
s33, the calculation unit acquires the route index of each exit position of the layer where the trapped person is located through an escape route generation algorithm, and takes the route with the minimum route index as the optimal escape route.
The beneficial effects obtained by the invention are as follows: 1. by judging whether the trapped person is inside or outside the building, different escape routes are provided, if the shortest escape route is provided outside the building, the trapped person can escape quickly, and if the best escape route is provided inside the building, the trapped person can avoid obstacles and dangerous areas, and the escape risk is reduced.
2. The base station and the gateway can work with ultra-low duty ratio by adopting the LDSW technology, energy conservation is facilitated, the LDSW technology can realize longer communication distance and multi-channel communication, high-efficiency communication can be performed between rescue workers and the command part in disaster areas with larger range, and the command part can command a plurality of rescue workers and trapped workers simultaneously.
3. The LDSW intelligent terminal receives information in the disaster area through the disaster area information receiving module, and displays the information of the disaster area and the optimal escape route to the command part through the rescue information acquisition module and the escape route acquisition module, so that rescue plans can be formulated by staff of the command part.
Drawings
The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate like parts in the different views.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of an emergency base station according to the present invention.
Fig. 3 is a flow chart of the operation of the present invention.
FIG. 4 is a flow chart of the escape route acquisition module of the present invention for generating an optimal escape route for trapped people.
Detailed Description
The following embodiments of the present invention are described in terms of specific examples, and those skilled in the art will appreciate the advantages and effects of the present invention from the disclosure herein. The invention is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not intended to be drawn to actual dimensions. The following embodiments will further illustrate the related art content of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
Embodiment one: according to fig. 1, 2, 3 and 4, the embodiment provides an emergency disaster relief communication system based on an LDSW technology, which comprises an emergency base station, an emergency gateway and a central processing unit; the emergency base station is used for establishing a temporary communication network and serving as a communication relay station; the emergency gateway is used for realizing information conversion between different communication devices; the central processing unit is used for outputting disaster relief instructions to the emergency gateway; the central processing unit comprises a rescue information acquisition module and an escape route acquisition module; the rescue information acquisition module is used for acquiring information of terrains or internal structures of the disaster relief area; the escape route acquisition module is used for generating an optimal escape route of trapped people according to the information acquired by the rescue information acquisition module;
the escape route acquisition module generates an optimal escape route of the trapped person according to the following formula:
=/>*/>；
wherein,the path index of the j exit position of the layer number of the trapped person is; />The distance from the current position of the trapped person to the j exit position of the layer number of the trapped person is the distance; n is the number of monitoring cameras through which trapped personnel pass from the current position to the jth exit position,/L>Obstacle weight obtained for the ith monitoring camera through which the trapped person passes from its current position to the jth exit position, wherein +.>=/>,/>For the number of pixels of the gray-scale image of the captured image of the ith monitoring camera, +.>The number of pixels occupied by the barrier in the gray level image of the shot image of the ith monitoring camera is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module; />For the feasibility weight of the current position of the trapped person from the j-th exit position of the layer number of the trapped person, when the j-th exit position is blocked by an obstacle, the trapped person is in the position of the j-th exit position>0, otherwise->1, whether the j-th exit position is blocked or not is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module.
Specifically, the optimal escape route refers to a route with a short distance to the destination and few obstacles, and is specifically represented as a route with the smallest corresponding route index.
Furthermore, the emergency base station comprises a positioning module, an automatic control module, a driving module and a fault detection and repair module; the positioning module is used for positioning the mobile terminal of the user communicating with the base station; the automatic control module comprises an algorithm memory and a port and is used for automatically controlling the automatic movement of the emergency base station and the opening and closing of each part of the emergency base station; the driving module is used for driving the emergency base station to move; the fault detection and repair module is used for detecting whether each part of the emergency base station has faults or not and automatically repairing the parts after the faults occur.
Specifically, the algorithm memory comprises a plurality of algorithms for automatic movement and automatic maintenance of the base station, and is connected and communicated with each hardware in the emergency base station through USB, UART, SPI, I C and other ports, so that the whole automation of the emergency base station is realized; the automatic control module can control the starting and closing of the driving module by being connected with the driving module, so that the emergency base station can automatically advance to a designated position when being thrown near a disaster area; the automatic control module can control the starting and closing of the fault detection and repair module by being connected with the fault detection and repair module, so that the emergency base station is detected and maintained regularly, and the emergency base station can be ensured to keep working normally.
Furthermore, the emergency disaster relief communication system further comprises an LDSW intelligent terminal, wherein the LDSW intelligent terminal is used for receiving disaster area information and trapped person mobile phone signals and forwarding the signals to an emergency base station, and the LDSW intelligent terminal comprises an SoC integrated circuit, a trapped person signal receiving module, a disaster area information receiving module, a data conversion module and a disaster area signal sending module; the SoC integrated circuit comprises a central processing unit, a memory, an input interface and an output interface, and is used for controlling each module of the LDSW intelligent terminal; the trapped person signal receiving module is used for receiving mobile phone signals of trapped persons; the disaster area information receiving module is used for acquiring images shot by the monitoring cameras in the disaster area and data of each sensor; the data conversion module is used for converting the image information received by the disaster area information and the sensor data into digital signals; the disaster area signal sending module is used for sending the image information and the sensor data converted by the data conversion module and the mobile phone signals of the trapped person received by the trapped person signal receiving module to the emergency base station.
Specifically, the disaster area information receiving module is accessed to an internal network of the disaster area through a wireless signal so as to acquire images shot by the monitoring cameras in the disaster area, data of each sensor and a construction structure diagram, and when the internal network of the disaster area can be accessed only by a secret key, a responsible person of the disaster area can be contacted to acquire a corresponding network secret key, so that the internal network of the disaster area is accessed.
Furthermore, the emergency gateway is connected with the emergency base station through an NG interface, the emergency gateway comprises a satellite signal sending and receiving module, the satellite signal sending and receiving module is used for carrying out signal intercommunication with an operator core network through a satellite, satellite signal receiving can be used for acquiring satellite images of disaster areas, the emergency gateway is an LDSW gateway, and the LDSW gateway supports access to RS-485, wi-Fi, NB-IoT, 3G, 4G and 5G networks.
Specifically, the emergency gateway also has the function of closing authentication, and through the function, all mobile terminals in the disaster area can be accessed into the emergency communication network without participation of an operator core network, so that the command part can be favorably contacted with trapped personnel. The technique of closing the authentication belongs to the prior art and will not be described in detail here.
Further, the central processing unit also comprises an input end and an output end; the input end comprises an input table and a microphone, wherein the input table is used for receiving rescue instructions of the text and picture types input by the command part, and the microphone is used for receiving audio rescue instructions input by the command part; the output end is used for outputting the information acquired by the rescue information acquisition module and the rescue path acquired by the escape route acquisition module.
Specifically, the rescue path includes a shortest escape route or an optimal escape route.
Specifically, the mobile terminal signals of the trapped person can be received by the trapped person signal receiving module and forwarded to the emergency gateway, and the emergency gateway closes authentication, so that the mobile terminal of the trapped person can be accessed to the emergency communication network, after the mobile terminal signal of the trapped person is accessed to the emergency communication network, the mobile terminal signal of the trapped person can be transmitted to the central processing unit through the emergency gateway and is contacted with the command part, the trapped person can acquire related information of a rescue path, and the command part can command the trapped person to save oneself.
Specifically, rescue workers enter disaster areas by using a mobile terminal with a characteristic SIM card, the special SIM card is configured by a person skilled in the art before rescue actions begin, the command part can uniformly command the rescue workers with the special SIM card through the emergency gateway, the rescue workers can contact the command part through the special SIM card and the emergency gateway, a rescue path is acquired, the rescue efficiency is improved, and the communication between trapped workers and rescue workers is facilitated to be distinguished by using the special SIM card, so that the communication efficiency is improved.
Further, the escape route acquisition module comprises a data arrangement unit, a calculation unit and a knowledge graph construction unit; the data sorting unit is used for sorting and storing the information acquired by the rescue information acquisition module; the calculation unit is used for executing various calculations required for acquiring the rescue route; the knowledge graph construction unit is used for displaying the data collated by the data collating unit and the rescue path acquired by the calculating unit in the form of a knowledge graph.
Specifically, the data sorting unit sorts and sorts the information acquired by the rescue information acquisition module through a sorting algorithm.
Specifically, the rescue information acquisition module can send an information collection command to the LDSW intelligent terminal of the emergency base station through the emergency gateway, and acquire images of all parts in the disaster area, sensor data, a construction structure diagram and the positions of trapped people from the disaster area information receiving module of the LDSW intelligent terminal; furthermore, the rescue information acquisition module can acquire satellite shooting images of disaster areas through communication with satellites.
Specifically, the knowledge graph construction module displays the generated knowledge graph through the output end of the central processing unit, so that the command part can know the conditions in the disaster area more clearly and make a corresponding rescue plan.
Further, the workflow of the emergency disaster relief communication system comprises the following steps:
s1, setting an emergency disaster relief base station and an emergency disaster relief gateway near a disaster area;
s2, the LDSW intelligent terminal acquires various information in the disaster area, and forwards the information to an emergency gateway through an emergency base station and further to a rescue information acquisition module;
s3, the emergency base station locates the user terminal accessed to the emergency communication network through the locating module to obtain the location of the trapped person, and sends the location to the rescue information acquisition module;
s4, the escape route acquisition module generates an optimal escape route of the trapped person according to the information acquired by the rescue information acquisition module;
s5, the command part is communicated with the trapped person through the emergency gateway, sends the optimal escape route to the mobile terminal of the trapped person, and guides the trapped person to escape;
and S6, the command part is connected with the rescue workers through the emergency gateway, and the command part commands the rescue workers to carry out rescue work according to the knowledge graph generated by the knowledge graph construction module.
Still further, the escape route obtaining module generates an optimal escape route for the trapped person, comprising the steps of:
s31, a command part staff marks an escape outlet of a disaster area on a satellite image displayed by a central processing unit, an escape route acquisition module judges whether trapped staff is inside a building according to a positioning result of a positioning module, if not, S32 is executed, otherwise S33 is executed;
s32, the computing unit acquires the shortest path of the trapped person to the escape exit through an A-algorithm, and takes the shortest path as the shortest escape route of the trapped person;
s33, the calculation unit acquires the route index of each exit position of the layer where the trapped person is located through an escape route generation algorithm, and takes the route with the minimum route index as the optimal escape route.
Considering that disaster situations possibly spread, and considering that if the building is in disaster situations, a large number of people escape from the building, but leaving the building can not be guaranteed completely, and people nearby need to be dredged; for this purpose, the present embodiment further includes: the emergency base station locates the user terminal accessed to the emergency communication network through the locating module, and comprises the following steps:
s21, the positioning module sends a positioning request signal to the LDSW intelligent terminal;
s22, the LDSW intelligent terminal sends a positioning signal to a user terminal needing positioning, and the user terminal sends a return positioning signal to the LDSW intelligent terminal;
s23, the LDSW intelligent terminal obtains the time difference between sending the positioning signal and receiving the returned positioning signal and sends the time difference to the positioning module;
s24, the positioning module obtains the distances between the user terminal and the nearest 4 LDSW terminals, and obtains the first coordinate of the user terminal according to the coordinates of the 4 LDSW terminals in the satellite map by the TOA method；
Specifically, the distance between the user terminal and the LDSW terminal may be obtained by multiplying the signal propagation speed and the time difference by 2, where the TOA method belongs to the prior art and is not described herein in detail;
s25, the user terminal is directly positioned through a satellite positioning method, and a second coordinate of the user terminal is obtained；
S26, judging whether the user terminal is inside the building according to the first coordinate and the second coordinate respectively, and then executing S27 according to the judging results of the two coordinates respectively;
specifically, if the first coordinate is located in a space surrounded by 4 LDSW terminals, the user terminal is inside the building; according to the satellite map and the position of the second coordinate on the satellite map, carrying out image recognition on the position, and judging whether the position is a building or not, thereby judging whether the user terminal is inside the building or not;
s27, generating a positioning error index R according to the following formula:
；
wherein e is a natural constant;
and S28, if the error index is larger than the set threshold or equal to 0, the positioning error is larger, and the positioning with larger corresponding signal strength index in the first positioning and the second positioning is selected as the positioning of the user terminal.
Specifically, the setting threshold is set by one skilled in the art.
Specifically, the signal strength index may be obtained according to the following formula:
=/>；
=/>；
wherein,is the signal intensity index of the LDSW terminal, +.>Is a signal intensity index of the satellite; p is the average value of the signal intensities of 4 LDSW terminals nearest to the user terminal during positioning, P is the average value of the theoretical signal intensities from the 4 LDSW terminals received by the user terminal in a normal state, and P can be obtained through a formula of the signal intensity and the distance, and belongs to the prior art; q is the signal intensity of the satellite signal acquired by the user terminal when positioning, Q is the theoretical signal intensity from the satellite signal received by the user terminal in a normal state, and Q can be acquired through a formula of the signal intensity and the distance, and belongs to the prior art.
The beneficial effect of this scheme:
1. by judging whether the trapped person is inside or outside the building, different escape routes are provided, if the shortest escape route is provided outside the building, the trapped person can escape quickly, and if the best escape route is provided inside the building, the trapped person can avoid obstacles and dangerous areas, and the escape risk is reduced.
2. The base station and the gateway can work with ultra-low duty ratio by adopting the LDSW technology, energy conservation is facilitated, the LDSW technology can realize longer communication distance and multi-channel communication, high-efficiency communication can be performed between rescue workers and the command part in disaster areas with larger range, and the command part can command a plurality of rescue workers and trapped workers simultaneously.
3. The LDSW intelligent terminal receives information in the disaster area through the disaster area information receiving module, and displays the information of the disaster area and the optimal escape route to the command part through the rescue information acquisition module and the escape route acquisition module, so that rescue plans can be formulated by staff of the command part.
Embodiment two: this embodiment should be understood to include all the features of any one of the previous embodiments and be further improved on the basis thereof, and in that the calculation unit obtains an optimal escape route for the trapped person to the escape exit by means of an escape route generating algorithm, comprising the steps of:
s331, virtualizing the plan of each layer of the building obtained by the rescue information obtaining module to obtain a virtual graph of each layer of the building, respectively representing the virtual graph of each layer in a coordinate system, and marking the exit position from each layer to the next layer in the coordinate system;
s332, acquiring the distance DIS and the path of the current position of the trapped person and the different exit positions of the current layer number of the trapped person through an A-type algorithm;
s333, acquiring the path indexes of the current position of the trapped person and the different exit positions of the current layer number of the trapped person according to the following formula:
=/>*/>；
wherein,the path index of the j exit position of the layer number of the trapped person is; />The distance from the current position of the trapped person to the j exit position of the layer number of the trapped person is the distance; n is the number of monitoring cameras through which trapped personnel pass from the current position to the jth exit position,/L>Obstacle weight obtained for the ith monitoring camera through which the trapped person passes from its current position to the jth exit position, wherein +.>=/>,/>For the number of pixels of the gray-scale image of the captured image of the ith monitoring camera, +.>The number of pixels occupied by the barrier in the gray level image of the shot image of the ith monitoring camera is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module; />For the feasibility weight of the current position of the trapped person from the j-th exit position of the layer number of the trapped person, when the j-th exit position is blocked by an obstacle, the trapped person is in the position of the j-th exit position>0, otherwise->1, whether the j-th outlet position is blocked or not is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module;
s334, selecting a route with the smallest route index as a first escape route, wherein the first escape route comprises a route for the trapped person to reach an exit position corresponding to the route with the smallest route index from the current position of the trapped person and a route for the trapped person to reach building 1 from the floor where the trapped person is located through stairs corresponding to the corresponding exit position;
specifically, when a stairway corresponding to the first escape route is blocked on a certain layer, a second escape route is obtained from the position of the blocked position as the current position of trapped personnel through the formula set forth in S333, and the second escape route is replaced by a subsequent original route in the blocked position in the first escape route, so that an updated first escape route is obtained;
s335, acquiring all safety exits of a building 1 where trapped persons are located through a rescue information acquisition module, taking the end point of a first escape route as the updated current position of the trapped persons, calculating the path indexes of the current position of the trapped persons and all the safety exits through a formula in S333, and selecting a route with the smallest path index as a supplementary route of the first escape route, wherein the optimal escape route of the trapped persons reaching the escape exits is the combination of the first escape route and the supplementary route of the trapped persons.
The beneficial effects of this embodiment are: the method has the advantages that only the shortest path between two points can be obtained by using the A-type algorithm, the difficulty of passing through the path is avoided, the path obtained by the A-type algorithm is based on the obtained structure diagram, but the actual situation in the building is often more complex than the structure diagram, the path which is the easiest for the trapped person to pass through is taken as the optimal escape route by introducing the path index and combining the result of the A-type algorithm, the path which is the shortest is favorable for the trapped person to escape more easily and rapidly, the path index is obtained by combining the shooting image of the monitoring camera, the defect that the A-type algorithm performs calculation based on the structure diagram is overcome, and the result of the path index is more fit with reality.
The foregoing disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by applying the description of the present invention and the accompanying drawings are included in the scope of the present invention, and in addition, elements in the present invention can be updated as the technology develops.
Claims (8)
1. An LDSW technology-based emergency disaster relief communication system is characterized by comprising an emergency base station, an emergency gateway and a central processing unit; the emergency base station is used for establishing a temporary communication network and serving as a communication relay station; the emergency gateway is used for realizing information conversion between different communication devices; the central processing unit is used for outputting disaster relief instructions to the emergency gateway; the central processing unit comprises a rescue information acquisition module and an escape route acquisition module; the rescue information acquisition module is used for acquiring information of terrains or internal structures of the disaster relief area; the escape route acquisition module is used for generating an optimal escape route of trapped personnel according to the information acquired by the rescue information acquisition module, wherein: the escape route acquisition module acquires the route index of each exit position of the layer where the trapped person is located according to the following steps, and takes the route with the minimum corresponding route index as the optimal escape route:
=/>*/>；
wherein,the path index of the j exit position of the layer number of the trapped person is; />The distance from the current position of the trapped person to the j exit position of the layer number of the trapped person is the distance; n is the number of monitoring cameras through which trapped personnel pass from the current position to the jth exit position,/L>Obstacle weight obtained for the ith monitoring camera through which the trapped person passes from its current position to the jth exit position, wherein +.>=/>,/>For the number of pixels of the gray-scale image of the captured image of the ith monitoring camera, +.>The number of pixels occupied by the barrier in the gray level image of the shot image of the ith monitoring camera is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module; />For the feasibility weight of the current position of the trapped person from the j-th exit position of the layer number of the trapped person, when the j-th exit position is blocked by an obstacle, the trapped person is in the position of the j-th exit position>0, otherwise->1, whether the j-th exit position is blocked or not is obtained by carrying out image recognition on the image received by the disaster area information receiving module by the rescue information acquisition module.
2. The emergency disaster relief communication system based on the LDSW technology as claimed in claim 1, wherein said emergency base station comprises a positioning module, an automation control module, a driving module, a fault detection and repair module; the positioning module is used for positioning the mobile terminal of the user communicating with the base station; the automatic control module comprises an algorithm memory and a port and is used for automatically controlling the automatic movement of the emergency base station and the opening and closing of each part of the emergency base station; the driving module is used for driving the emergency base station to move; the fault detection and repair module is used for detecting whether each part of the emergency base station has faults or not and automatically repairing the parts after the faults occur.
3. The LDSW technology-based emergency disaster relief communication system according to claim 2, further comprising an LDSW intelligent terminal, wherein the LDSW intelligent terminal is used for receiving disaster area information and trapped person mobile phone signals and forwarding the disaster area information and trapped person mobile phone signals to an emergency base station, and comprises an SoC integrated circuit, a trapped person signal receiving module, a disaster area information receiving module, a data conversion module and a disaster area signal sending module; the SoC integrated circuit is used for controlling each module of the LDSW intelligent terminal; the trapped person signal receiving module is used for receiving mobile phone signals of trapped persons; the disaster area information receiving module is used for acquiring images shot by the monitoring cameras in the disaster area and data of each sensor; the data conversion module is used for converting the image information received by the disaster area information and the sensor data into digital signals; the disaster area signal sending module is used for sending the digital signals converted by the data conversion module and the mobile phone signals received by the trapped person signal receiving module to the emergency base station.
4. An LDSW technology-based emergency disaster relief communication system according to claim 3, wherein the emergency gateway and the emergency base station are connected through an NG interface, the emergency gateway comprises a satellite signal transmitting and receiving module, the satellite signal transmitting and receiving module is used for signal intercommunication with an operator core network through a satellite, and the emergency gateway is an LDSW gateway.
5. The LDSW technology-based emergency disaster relief communication system of claim 4, wherein the central processor further comprises an input and an output; the input end comprises an input table and a microphone, wherein the input table is used for receiving rescue instructions of the text and picture types input by the command part, and the microphone is used for receiving audio rescue instructions input by the command part; the output end is used for outputting the information acquired by the rescue information acquisition module and the rescue path acquired by the escape route acquisition module.
6. The emergency disaster relief communication system based on the LDSW technology as claimed in claim 5, wherein said escape route obtaining module comprises a data sorting unit, a calculating unit and a knowledge graph constructing unit; the data sorting unit is used for sorting and storing the information acquired by the rescue information acquisition module; the calculation unit is used for executing various calculations required for acquiring the rescue route; the knowledge graph construction unit is used for displaying the data collated by the data collating unit and the rescue path acquired by the calculating unit in the form of a knowledge graph.
7. An LDSW technology based emergency relief communication system according to claim 6, wherein the workflow of the emergency relief communication system comprises the steps of:
s1, setting an emergency disaster relief base station and an emergency disaster relief gateway near a disaster area;
s2, the LDSW intelligent terminal acquires various information in the disaster area, and forwards the information to an emergency gateway through an emergency base station and further to a rescue information acquisition module;
s3, the emergency base station locates the user terminal accessed to the emergency communication network through the locating module to obtain the location of the trapped person, and sends the location to the rescue information acquisition module;
s4, the escape route acquisition module generates an optimal escape route of the trapped person according to the information acquired by the rescue information acquisition module;
s5, the command part is communicated with the trapped person through the emergency gateway, sends the optimal escape route to the mobile terminal of the trapped person, and guides the trapped person to escape;
and S6, the command part is connected with the rescue workers through the emergency gateway, and the command part commands the rescue workers to carry out rescue work according to the knowledge graph generated by the knowledge graph construction module.
8. The LDSW-based emergency relief communication system of claim 7, wherein the escape route obtaining module generates an optimal escape route for the trapped person comprises the steps of:
s31, a command part staff marks an escape outlet of a disaster area on a satellite image displayed by a central processing unit, an escape route acquisition module judges whether trapped staff is inside a building according to a positioning result of a positioning module, if not, S32 is executed, otherwise S33 is executed;
s32, the computing unit obtains the shortest path of the trapped person to the escape exit through an A-algorithm, takes the shortest path as the shortest escape route of the trapped person and ends;
s33, the calculation unit acquires the route index of each exit position of the layer where the trapped person is located through an escape route generation algorithm, and takes the route with the minimum route index as the optimal escape route.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150073574A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 엘지유플러스 | Terminal for providing emergency evacuation route information for indoor user, method for controlling the same, service server for providing emergency evacuation route information service for indoor user and method for controlling the same |
| CN105760966A (en) * | 2016-03-16 | 2016-07-13 | 深圳市嘉泰智能科技有限公司 | Intelligent fire emergency evacuation method and system |
| KR20170004913A (en) * | 2016-08-26 | 2017-01-11 | 주식회사 익성 | Evacuation path guidance system |
| CN106358320A (en) * | 2016-11-08 | 2017-01-25 | 中国矿业大学 | Coal mine emergency rescue and command system and method based on wireless Mesh ad hoc network |
| CN108259625A (en) * | 2018-02-11 | 2018-07-06 | 广西久邻电子商务有限公司 | A kind of escape and rescue method based on Buildings Modeling and personnel's running fix |
| CN110030997A (en) * | 2019-04-22 | 2019-07-19 | 何思慧 | A kind of inside fire mobile phone escape indicating system and its application method |
| CN112268241A (en) * | 2020-10-28 | 2021-01-26 | 广东交通职业技术学院 | Building interior fire emergency navigation positioning system and method |
| CN112991125A (en) * | 2021-02-03 | 2021-06-18 | 桂林理工大学 | Quick emergency system of wisdom scenic spot conflagration |
| CN219553064U (en) * | 2022-12-26 | 2023-08-18 | 厦门绿发投资有限公司 | High-rise building fire escape system based on personnel positioning |
-
2023
- 2023-12-27 CN CN202311820088.7A patent/CN117499905B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150073574A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 엘지유플러스 | Terminal for providing emergency evacuation route information for indoor user, method for controlling the same, service server for providing emergency evacuation route information service for indoor user and method for controlling the same |
| CN105760966A (en) * | 2016-03-16 | 2016-07-13 | 深圳市嘉泰智能科技有限公司 | Intelligent fire emergency evacuation method and system |
| KR20170004913A (en) * | 2016-08-26 | 2017-01-11 | 주식회사 익성 | Evacuation path guidance system |
| CN106358320A (en) * | 2016-11-08 | 2017-01-25 | 中国矿业大学 | Coal mine emergency rescue and command system and method based on wireless Mesh ad hoc network |
| CN108259625A (en) * | 2018-02-11 | 2018-07-06 | 广西久邻电子商务有限公司 | A kind of escape and rescue method based on Buildings Modeling and personnel's running fix |
| CN110030997A (en) * | 2019-04-22 | 2019-07-19 | 何思慧 | A kind of inside fire mobile phone escape indicating system and its application method |
| CN112268241A (en) * | 2020-10-28 | 2021-01-26 | 广东交通职业技术学院 | Building interior fire emergency navigation positioning system and method |
| CN112991125A (en) * | 2021-02-03 | 2021-06-18 | 桂林理工大学 | Quick emergency system of wisdom scenic spot conflagration |
| CN219553064U (en) * | 2022-12-26 | 2023-08-18 | 厦门绿发投资有限公司 | High-rise building fire escape system based on personnel positioning |
Non-Patent Citations (1)
| Title |
|---|
| 基于WSN的灾难现场最优逃生路径规划;黄月;吴成东;董晶晶;贾子熙;;东北大学学报(自然科学版);20130215(02);全文 * |
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