CN114302385A - Disaster self-rescue emergency communication equipment based on self-adaptive LDPC and directional antenna - Google Patents
Disaster self-rescue emergency communication equipment based on self-adaptive LDPC and directional antenna Download PDFInfo
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Abstract
The invention discloses disaster self-rescue emergency communication equipment based on a self-adaptive LDPC and a directional antenna, which is characterized in that communication connection among a mobile phone terminal of trapped people, disaster area rescue communication sub-equipment based on the self-adaptive LDPC and the directional antenna, communication relay sub-equipment based on the self-adaptive LDPC and the directional antenna and a mobile phone terminal of a rescue center is constructed; the high-quality and accurate communication connection and information transmission from disaster area rescue communication sub-equipment to communication relay sub-equipment and then to a mobile phone end of a rescue center are realized; the invention realizes the remote, efficient and accurate information transmission between the disaster-stricken and the rescue personnel under the complex change of the external environment, effectively reduces the communication error rate under the control of the code rate self-adaption function through the carried self-adaption LDPC coding circuit and decoding circuit, realizes the full communication coverage of the disaster-stricken area through the directional antenna, and reduces the equipment release and investment cost.
Description
Technical Field
The invention relates to the field of disaster self-rescue emergency communication, in particular to disaster self-rescue emergency communication equipment based on a self-adaptive LDPC and a directional antenna.
Background
In recent years, natural disasters frequently occur, and existing optical fiber and base station communication equipment is easily damaged. People in the disaster area face to be trapped and cannot send distress signals in time. Therefore, it is important to establish a set of emergency self-rescue system.
The existing post-disaster search and rescue means are equipment such as search and rescue dogs, life detectors and the like, and the working modes include sound waves, vibration, infrared detection and the like. However, these devices are generally only suitable for a small range of search and rescue and do not allow contact with the outside world. For example, when an earthquake disaster occurs, people bury under ruins, whether trapped people are passive or not is judged by using the prior art, the accuracy is poor, and the wall penetrating depth of life detection is limited, so that seventy-two hours of gold for rescue is wasted.
In addition, the search and rescue command center also needs to establish a set of remote and portable communication terminals. Most of the existing communication modes are orbital satellite communication. The communication cost is high, and the terminal needs special research and development equipment and is not suitable for large-scale disaster relief. In the existing emergency communication rescue system, for example, on a communication command vehicle, the applied antenna is a horizontal omnidirectional antenna, the size is large, the gain is small and is about 3dBi, and the anti-interference capability of the system to signals is not considered.
Low Density Parity Check (LDPC) codes are adopted as an effective coding method by the international committee for data systems counseling (CCSDS) near-earth standard; the LDPC is an advanced channel coding technology and has higher code rate and regular structure; the application fields of LDPC codes mainly include modern communication systems and memory systems.
For a traditional horizontal omnidirectional antenna, although the coverage area of the antenna is 360 degrees, the gain is small, the size is large, the transmission distance is limited due to insufficient directionality, and the deficiency can be made up only by improving the transmitting power.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides disaster self-rescue emergency communication equipment based on a self-adaptive LDPC and a directional antenna.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a disaster self-rescue emergency communication device based on an adaptive LDPC and a directional antenna comprises: the system comprises a trapped person mobile phone end, disaster area rescue communication sub-equipment based on a self-adaptive LDPC and a directional antenna, communication relay sub-equipment based on the self-adaptive LDPC and the directional antenna and a rescue center mobile phone end;
the mobile phone terminal of the trapped person is used for collecting information of the trapped person and transmitting the collected information of the trapped person to the disaster area rescue communication sub-equipment;
the disaster area rescue communication sub-device is used for receiving information of disaster-stricken personnel and transmitting the acquired information of the disaster-stricken personnel to the communication relay sub-device;
the communication relay sub-equipment is used for receiving the situation of disaster-stricken personnel in the disaster area in real time and sending the received information to the mobile phone end of the rescue center.
Preferably, disaster area rescue communication sub-equipment includes:
the first wireless communication module is used for realizing communication between the disaster area rescue communication sub-equipment and the communication relay sub-equipment and providing WiFi signals for the mobile phone end of the trapped personnel;
the first administrator module is used for transmitting the abnormal information to the disaster area administrator in a short message mode through the disaster area rescue communication sub-equipment after the disaster area rescue communication sub-equipment is abnormally disconnected with the communication relay sub-equipment;
the first rescue mode is used for controlling the first wireless communication module to work and establishing communication connection between the first wireless communication module and the communication relay sub-equipment and the mobile phone terminal of the trapped person;
the first curve transmission module is used for providing different types of transmission waveforms for information transmission based on the self-adaptive LDPC technology and transmitting disaster-stricken personnel information to the communication relay sub-equipment through the first wireless communication module;
the first character transmission module is used for testing the communication between the disaster area rescue communication sub-equipment and the communication relay sub-equipment;
the first transmission setting module is used for setting the air rate, the communication channel, the transmitting power and the communication baud rate of signal transmission in the first wireless communication module;
the first security module is used for controlling the self-adaptive LDPC code rate and the on-off of the switch notified by the short message in the first administrator module, so that the communication quality of the system is improved;
the first clock module is used for recording and displaying the current real-time;
and the first system setting module is used for adjusting parameters of all modules in the disaster area rescue communication sub-equipment.
Preferably, the first wireless communication module includes:
the first WIFI high-gain antenna module is used for providing a WiFi signal for a trapped person mobile phone end and receiving information of the trapped person transmitted by the trapped person client;
the first high-gain directional antenna module is used for transmitting the information of the disaster-stricken personnel to the communication relay sub-equipment according to the signal type selected by the curve transmission module;
the first 4G antenna module is used for transmitting the short message of the abnormal information transmitted to the disaster area manager by the manager module to the disaster area manager;
the first radio frequency module is used for assisting the first WIFI high-gain antenna module to receive disaster-stricken personnel information transmitted by the disaster-stricken personnel client.
Preferably, the communication relay sub-device includes:
the second wireless communication module is used for receiving the information of the disaster-stricken personnel transmitted by the disaster area rescue communication sub-equipment and transmitting the information of the disaster-stricken personnel to the mobile phone end of the rescue center;
the second rescue mode module is used for controlling the second wireless communication module to work, receiving information of disaster-stricken personnel transmitted by the disaster area rescue communication sub-equipment and transmitting the received information of the disaster-stricken personnel to the rescue center mobile phone terminal;
the second curve transmission module is used for establishing communication connection with disaster area rescue communication sub-equipment based on the self-adaptive LDPC technology and checking the transmission quality and the error correction capability of the system;
the second character transmission module is used for establishing communication connection with the first character transmission in the disaster area rescue communication sub-equipment and testing communication between the communication relay sub-equipment and the disaster area rescue communication sub-equipment;
the second transmission setting module is used for setting parameters of air rate, communication channel, transmitting power and communication baud rate in the communication relay sub-equipment;
the second clock module is used for recording and displaying the current real-time;
and the second system setting module is used for adjusting parameters of each module in the communication relay sub-equipment.
Preferably, the second wireless communication module includes:
the second WIFI high-gain antenna module is used for receiving disaster-stricken personnel information transmitted by the second high-gain directional antenna module and transmitting the disaster-stricken personnel information to the mobile phone end of the rescue center;
the second high-gain directional antenna module is used for receiving disaster-stricken personnel information transmitted in the disaster area rescue communication sub-equipment and transmitting the disaster-stricken personnel information to the second WIFI high-gain antenna module;
and the second radio frequency module is used for assisting the second WIFI high-gain antenna module to receive disaster-stricken personnel information transmitted by the second high-gain directional antenna module.
The invention has the following beneficial effects:
constructing a mobile phone end of trapped people, disaster area rescue communication sub-equipment based on the adaptive LDPC and the directional antenna, communication relay sub-equipment 300 based on the adaptive LDPC and the directional antenna and a mobile phone end of a rescue center; the mobile phone end of the trapped person is in communication connection with the disaster area rescue communication sub-equipment and is used for acquiring information of the trapped person and transmitting the acquired information of the trapped person to the disaster area rescue communication sub-equipment; the disaster area rescue communication sub-equipment is in communication connection with the communication relay sub-equipment and is used for receiving information of disaster-stricken personnel and transmitting the acquired information of the disaster-stricken personnel to the communication relay sub-equipment; the communication relay sub-equipment is in communication connection with a mobile phone end of the rescue center and is used for receiving the situation of disaster-stricken personnel in a disaster area in real time; the code rate self-adaption function control of the coding circuit and the decoding circuit is realized based on the self-adaption LDPC technology, the communication error rate is effectively reduced, the effective and accurate information transfer between the disaster-suffered personnel and the rescue personnel is realized, the efficient and long-distance communication purpose is achieved, the full coverage of the communication of the disaster-suffered area is realized through the directional antenna, the problems of complexity and long time period of communication equipment between a command center and a search and rescue site are solved on the basis of reducing the equipment release and the cost, and the lower error rate and the longer communication distance are still kept under the influence of channel noise, multipath and the like caused by the complex change of the external environment.
The preferred scheme has the following beneficial effects:
1. the disaster area self-rescue communication sub-equipment based on the self-adaptive LDPC and the directional antenna is built, information transmission and feedback of disaster victims are realized, the information is accurately transmitted to the remote communication relay sub-equipment based on the self-adaptive LDPC and the directional antenna, and the stability is high;
2. the communication relay sub-equipment based on the self-adaptive LDPC and the directional antenna can accurately and efficiently receive the information of remote disaster-stricken personnel transmitted by the disaster-area self-rescue communication sub-equipment based on the self-adaptive LDPC and the directional antenna, timely transmit the disaster-stricken information to the mobile phone end of the rescue center, realize the full coverage of disaster-area rescue communication equipment by using the directional antenna, reduce the release of equipment, reduce the cost and provide the specific information of the disaster-stricken personnel;
3. and designing a second wireless communication module, and realizing communication connection with the first wireless communication module by using a second WIFI high-gain antenna module to finish remote transmission of information of disaster-stricken personnel under the condition of stable and error-free data.
Drawings
FIG. 1 is a system block diagram of a disaster self-rescue emergency communication device based on an adaptive LDPC and a directional antenna provided by the present invention;
fig. 2 is a system structure diagram of a disaster self-rescue emergency communication device based on an adaptive LDPC and a directional antenna according to an embodiment of the present invention;
fig. 3 is a system structure diagram of a disaster area rescue communication sub-device 200 according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a working process of the disaster area rescue communication sub-device 200 according to an embodiment of the present invention;
fig. 5 is a system configuration diagram of a communication relay sub-device 300 according to an embodiment of the present invention;
fig. 6 is a flowchart of the operation of the communication relay sub-device 300 according to the embodiment of the present invention;
fig. 7 is a preferred frame of a circuit of the disaster area rescue communication sub-device 200 according to an embodiment of the present invention;
fig. 8 is a preferred circuit framework of the communication relay sub-device 300 according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 and fig. 2, the disaster self-rescue emergency communication device based on the adaptive LDPC and the directional antenna includes: the system comprises a trapped person mobile phone end 100, disaster area rescue communication sub-equipment 200 based on a self-adaptive LDPC and a directional antenna, communication relay sub-equipment 300 based on the self-adaptive LDPC and the directional antenna and a rescue center mobile phone end 400;
the mobile phone terminal 100 for trapped persons is used for collecting information of the persons suffering from the disaster and transmitting the collected information of the persons suffering from the disaster to the rescue communication sub-device 200 in the disaster area;
the disaster area rescue communication sub-device 200 is used for receiving information of disaster-stricken personnel and transmitting the acquired information of the disaster-stricken personnel to the communication relay sub-device 300;
preferably, as shown in fig. 3, the disaster area rescue communication sub-device 200 includes:
the first wireless communication module is used for realizing communication between the disaster area rescue communication sub-device 200 and the communication relay sub-device 300 and providing a WiFi signal for the mobile phone end 100 of the trapped person;
preferably, the first wireless communication module includes:
the first WIFI high-gain antenna module 201 is configured to provide a WIFI signal for the trapped person mobile phone end 100, and receive information of the trapped person transmitted by the trapped person client 100;
the first high-gain directional antenna module 202 is configured to transmit the information of the disaster-stricken person to the communication relay sub-device 300 according to the signal type selected by the first curve transmission module 206;
the first 4G antenna module 203 is configured to transmit a short message of the abnormal information transmitted by the first administrator module 204 to the disaster area administrator;
optionally, in the embodiment of the present invention, the first 4G antenna module 203 may adopt a 4G module and a surface-mounted 4G antenna, and may send device disconnection information to a cell phone of a disaster area manager in time when the disaster area communication device is suddenly disconnected from the rescue center system, so as to avoid a situation that a rescue signal cannot be captured due to a device communication problem.
The first radio frequency module 211 is configured to assist the first WIFI high-gain antenna module 201 in receiving information of the disaster stricken person transmitted by the disaster stricken person client 100.
The first administrator module 204 is configured to, after the disaster area rescue communication sub-device 200 is abnormally disconnected from the communication relay sub-device 300, transmit the abnormal information to a disaster area administrator through the disaster area rescue communication sub-device 200 in a short message manner through the first wireless communication module;
the first rescue mode 205 is used for controlling the first wireless communication module to work and establishing communication connection between the communication relay sub-device 300 and the trapped person mobile phone end 100;
the first curve transmission module 206 is configured to provide different types of transmission waveforms for information transmission based on an adaptive LDPC technology, and transmit information of the disaster-stricken person to the communication relay sub-device 300 through the first wireless communication module;
the first character transmission module 207 is used for testing the communication between the disaster area rescue communication sub-device 200 and the communication relay sub-device 300;
a first transmission setting module 208, configured to set an air rate, a communication channel, a transmission power, and a communication baud rate of signal transmission in the first wireless communication module;
the first security module 209 is configured to control the adaptive LDPC code rate and the on/off of the switch notified by the short message in the first administrator module 204, so as to improve the communication quality of the system;
a first clock module 210 for recording and displaying the current real-time;
and the first system setting module 211 is configured to perform parameter adjustment on each module in the disaster area rescue communication sub-device 200.
Optionally, as shown in fig. 4, after the disaster area rescue communication sub-device 200 is placed in a disaster area, the first rescue mode 205 may be opened to indicate that a search and rescue task is being performed on a person, in this mode, the disaster area rescue communication sub-device 200 activates the radio frequency chip and the second 915MHz high-gain antenna 302 to receive information from the disaster area rescue communication sub-device 200, and the WIFI module and the first WIFI high-gain antenna module 201 work at the same time, a person in danger may open the WIFI function of the mobile phone end 100 of the person in danger to be connected to the WIFI signal, and send personal distress information through the pre-installed APP software "self-rescue communication system", and the disaster area rescue communication sub-device 200 may select the type of the first curve transmission module 206 after receiving the distress information, such as a sine wave, a triangle wave, and a square wave, and send information of the person in danger to the communication sub-device 200 through the radio frequency chip and the first MHz high-gain antenna module 202 A device 300; the disaster area rescue communication sub-device 200 and the communication relay sub-device 300 can perform response communication every 2 seconds to check whether the connection state is good;
the first administrator 204 module in the disaster area rescue communication sub-device 200 can register the mobile phone number of the disaster area rescue administrator, and support 3 administrators to the maximum, and when the short message notification is started, if the disaster area rescue communication sub-device 200 is disconnected from the communication relay sub-device 300 or other abnormal conditions occur, the system of the disaster area rescue communication sub-device 200 can directly send the short message to notify the disaster area administrator through the first 4G antenna 203; a first character transmission 207 function that can test in advance the reliability of communication between the disaster area rescue communication sub-apparatus 200 and the communication relay sub-apparatus 300; the first safety 209 function includes the switch selection of the self-adaptive LDPC code rate and the short message notification, so that the self-adaptive LDPC code rate can reduce the error rate, improve the communication quality of the system and ensure the accurate transmission of information by adjusting the coding code rate in a complex environment; a first clock 210 function for recording and displaying the current time; the first system setting 211 function is used for setting functions such as system time, serial port baud rate, volume, automatic screen turning, screen brightness, touch screen calibration and the like.
The communication relay sub-device 300 is configured to receive the situation of the disaster-stricken person in the disaster area in real time, and send the received information to the rescue center mobile phone terminal 400.
As shown in fig. 5, preferably, the communication relay sub-device 300 includes:
the second wireless communication module is configured to receive information of the disaster-stricken person transmitted by the disaster area rescue communication sub-device 200, and transmit the information of the disaster-stricken person to the rescue center mobile phone end 400;
preferably, the second wireless communication module includes:
the second WIFI high-gain antenna module 301 is configured to receive information of the disaster-stricken person transmitted by the second high-gain directional antenna module 302, and transmit the information to the rescue center mobile phone terminal 400;
the second high-gain directional antenna module 302 is configured to receive information of the disaster-stricken person transmitted in the disaster area rescue communication sub-device 200, and transmit the information to the second WIFI high-gain antenna module 301;
the second radio frequency module 309 is configured to assist the second WIFI high-gain antenna module 301 to receive information of the disaster stricken person transmitted by the second high-gain directional antenna module 302.
A second rescue mode module 303, configured to control a second wireless communication module to work, receive information of the disaster-stricken person transmitted by the disaster area rescue communication sub-device 200, and transmit the received information of the disaster-stricken person to the rescue center mobile phone end 400;
a second curve transmission module 304, configured to establish a communication connection with the disaster area rescue communication sub-device 300 based on an adaptive LDPC technology, and check transmission quality and error correction capability of the system;
a second character transmission module 305, configured to establish a communication connection with the first character transmission 207 in the disaster area rescue communication sub-device 200, and test communication between the communication relay sub-device 300 and the disaster area rescue communication sub-device 200;
a second transmission setting module 306, configured to set parameters of an air rate, a communication channel, a transmission power, and a communication baud rate in the communication relay sub-device 300;
a second clock module 307 for recording and displaying the current real-time;
and a second system setting module 308, configured to perform parameter adjustment on each module in the communication relay sub-device 300.
Optionally, a system structure diagram of the communication relay sub-device 300 is provided in the embodiment of the present invention, as shown in fig. 5, the system structure diagram includes a rescue mode 303, a curve transmission 304, a character transmission 305, a transmission setting 306, a clock 307, and a system setting 308, and a specific work flow thereof is as shown in fig. 6, after the system is turned on, the second rescue mode 303 is opened, the communication relay sub-device 300 activates a radio frequency chip and a second 915MHz high gain antenna 302, receives information from the disaster area rescue communication sub-device 200, and simultaneously activates a WIFI module inside the communication relay sub-device 300 and a built-in second 2.4GHz WIFI antenna 301, and sends the received distress information to a mobile phone of a rescue center mobile phone end 400, or an external expandable screen 500 may display the rescue information, and accurately position trapped people on a map;
in the rescue mode 303, in this mode, the communication relay sub-device 300 activates the radio frequency chip and the second 915MHz high-gain antenna 302, and receives information from the disaster area rescue communication sub-device 200; the curve transmission 304, the LDPC decoding technology with code rate self-adaptation, and the LDPC coding technology in the disaster area rescue communication sub-equipment 200 ensure the reliability of the communication system together; after the disaster area rescue communication sub-device 200 opens the first curve transmission 206 and sends a constant and continuous test waveform at a fixed interval, the communication relay sub-device 300 opens the second curve transmission 304 function to check the transmission quality and the error correction capability of the system; after the test is finished, the LDPC function is always opened and is used for transmitting disaster area rescue information; a second character transmission 305 for supporting numbers, letters and Chinese characters in accordance with the function of the first character transmission 207 of the disaster area rescue communication sub-device 200; a second transmission setting 306 function, consistent with the first transmission setting 208 function of the disaster area rescue communication sub-device 200, that can set an air rate, a communication channel, a transmission power, and a communication baud rate; the second clock 307 has the same function as the first clock 210 of the disaster area rescue communication sub-device 200, and is used for recording and displaying the current time; the second system setting 308 function is consistent with the first system setting 211 function of the disaster area rescue communication sub-device 200, and is used for setting functions of system time, serial port baud rate, volume, automatic screen turning, screen brightness, touch screen calibration and the like.
Alternatively, in the preferred embodiment of the present invention, the disaster area rescue communication sub-device 200 is specifically designed into a frame as shown in fig. 7, in the aspect of system hardware design, a CycloneV _5CEFA5FPGA main control core board can be used, an LDPC coding circuit based on code rate self-adaption is programmed in FPGA main control, an A7600C 14G module, a TJC8048X550_011C serial port color liquid crystal display screen, an AS66-T20 wireless data transmission module, an ATK-ESP8266 WIFI module, a 915MHz circular polarization super-surface antenna, a 2.4GHz surface wave end-fire grating antenna, a digital steering engine, an 0407 loudspeaker and the like, an embedded system is carried on software control, disaster area rescue workers can touch the working mode of the whole system through a screen, such as transmitted data, code rate self-adaptive function, transmission rate and airspeed, transmission power, transmission channel and other key functions, so as to effectively regulate and control the data and code rate self-adaptive function, and achieve the purpose of high-efficiency remote communication;
AS shown in fig. 8, a specific design framework of the communication relay sub-device 300 is implemented by using a cycleev _5CEFA5FPGA master control core board, and programming a code rate adaptive LDPC decoding circuit, a TJC8048X550_011C serial color liquid crystal display, an AS66-T20 wireless data transmission module, an ATK-ESP8266 WIFI module, a 915MHz circular polarization super surface antenna, a 2.4GHz WIFI internal antenna, and an 0407 speaker in the FPGA master control.
Optionally, the FPGA is provided with a built-in WIFI module and a WIFI antenna for providing WIFI signals for the client of the rescue center, so that the mobile phone of the rescue center can be connected to the WIFI signals in a searching manner to realize communication connection, and the touchable screen is used for controlling key settings such as a working mode, a transmission rate, code rate adaptation and a transmission channel of the sub-device, so as to obtain good signal quality.
Optionally, the code rate of the LDPC code can be effectively adjusted according to an external signal-to-noise ratio based on the code rate adaptive LDPC coding circuit and the LDPC decoding circuit, and the LDPC coding circuit has extremely high stability under the condition of sudden change of an external environment, and ensures stable and error-free transmission of data.
Optionally, when a disaster occurs, the rescue workers need to carry out efficient rescue work, specific positions of trapped people and information of the trapped people must be clear, positioning of the trapped people is a premise for the development of the rescue work, almost everyone can carry a mobile phone at present, and a client of the trapped people is designed based on the trapped people and user configuration can be carried out in advance based on mobile phone APP software; when the disaster area self-rescue communication system is built in a disaster area, the disaster area self-rescue communication sub-equipment can send WIFI hotspots without passwords through the wireless WIFI communication directional antenna, disaster-stricken personnel can connect with the WIFI hotspots and send own help seeking information through mobile phone APP software, and the disaster area self-rescue communication sub-equipment can receive the information;
the disaster-stricken personnel send the distress information of the disaster-stricken personnel to be transmitted to an emergency command center for scheduling, the communication relay sub-equipment and the disaster area self-rescue communication sub-equipment realize remote transmission through the same radio frequency chip and a remote wireless communication directional antenna, the information quality can be influenced when channel noise, multipath and the like caused by complex changes of external environment are influenced, an LDPC coding circuit and an LDPC decoding circuit based on a code rate self-adaption technology can be carried in the main control circuits corresponding to the communication relay unit and the disaster area self-rescue communication unit, and the communication error rate is effectively reduced; the client of the rescue center can be connected with the WIFI signal transmitted by the communication relay unit after being started, 3D map software such as a Goods and Baidu map is configured in the client so as to accurately position longitude and latitude and display the geographical position of the disaster-stricken person, and meanwhile, the information of the trapped person sent by the communication relay unit is received based on the mobile phone APP software specially designed in the embodiment of the invention.
Optionally, after the disaster area self-rescue communication sub-device based on the adaptive LDPC and the directional antenna and the communication relay sub-device based on the adaptive LDPC and the directional antenna establish a communication relationship with the remote wireless communication directional antenna through the radio frequency chip, a signal received by the disaster area self-rescue communication system may obtain the disaster area trapped persons and the positioning information through the LDPC decoding circuit, and then be transmitted to the rescue center mobile phone, and the APP software in the mobile phone receives the information, and meanwhile, the APP software accesses the 3D map, so that the longitude and latitude information and the person condition are accurately positioned.
Optionally, the FPGA is provided with a built-in WIFI module and a WIFI antenna for providing WIFI signals for the client of the rescue center, so that the mobile phone of the rescue center can be connected to the WIFI signals in a searching manner to realize communication connection, and the touchable screen is used for controlling key settings such as a working mode, a transmission rate, code rate adaptation and a transmission channel of the sub-device, so as to obtain good signal quality.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (5)
1. The utility model provides a calamity self-rescue emergency communication equipment based on self-adaptation LDPC and directional antenna which characterized in that includes: the system comprises a trapped person mobile phone end (100), disaster area rescue communication sub-equipment (200) based on a self-adaptive LDPC and a directional antenna, communication relay sub-equipment (300) based on the self-adaptive LDPC and the directional antenna and a rescue center mobile phone end (400);
the mobile phone terminal (100) of the trapped people is used for collecting information of the people suffering from the disaster and transmitting the collected information of the people suffering from the disaster to the rescue communication sub-equipment (200) in the disaster area;
the disaster area rescue communication sub-device (200) is used for receiving information of disaster-stricken personnel and transmitting the acquired information of the disaster-stricken personnel to the communication relay sub-device (300);
and the communication relay sub-equipment (300) is used for receiving the disaster-stricken personnel condition in the disaster area in real time and sending the received information to the rescue center mobile phone terminal (400).
2. The adaptive LDPC and directional antenna based disaster self-rescue emergency communication device according to claim 1, wherein the disaster area rescue communication sub-device (200) comprises:
the first wireless communication module is used for realizing communication between the disaster area rescue communication sub-equipment (200) and the communication relay sub-equipment (300) and providing WiFi signals for the mobile phone end (100) of the trapped people;
the first administrator module (204) is used for transmitting the abnormal information to the disaster area administrator in a short message mode through the disaster area rescue communication sub-equipment (200) after the disaster area rescue communication sub-equipment (200) is abnormally disconnected with the communication relay sub-equipment (300);
the first rescue mode (205) is used for controlling the first wireless communication module to work and establishing communication connection between the communication relay sub-equipment (300) and the mobile phone end (100) of the trapped person;
the first curve transmission module (206) is used for providing different types of transmission waveforms for information transmission based on the adaptive LDPC technology and transmitting the information of the disaster-stricken personnel to the communication relay sub-equipment (300) through the first wireless communication module;
the first character transmission module (207) is used for testing the communication between the disaster area rescue communication sub-device (200) and the communication relay sub-device (300);
a first transmission setting module (208) for setting an air rate, a communication channel, a transmission power, and a communication baud rate of signal transmission in the first wireless communication module;
the first security module (209) is used for controlling the self-adaptive LDPC code rate and the on-off of a switch notified by a short message in the first administrator module (204), so that the communication quality of the system is improved;
a first clock module (210) for recording and displaying a current real-time;
and the first system setting module (211) is used for adjusting parameters of all modules in the disaster area rescue communication sub-equipment (200).
3. A disaster self-rescue emergency communication device based on adaptive LDPC and directional antenna as claimed in claim 2, wherein the first wireless communication module comprises:
the first WIFI high-gain antenna module (201) is used for providing a WiFi signal for a trapped person mobile phone terminal (100) and receiving disaster-stricken person information transmitted by a disaster-stricken person client terminal (100);
the first high-gain directional antenna module (202) is used for transmitting the information of the disaster-stricken personnel to the communication relay sub-equipment (300) according to the signal type selected by the first curve transmission module (206);
the first 4G antenna module (203) is used for transmitting the short message of the abnormal information transmitted by the first administrator module (204) to the disaster area administrator;
the first radio frequency module (211) is used for assisting the first WIFI high-gain antenna module (201) to receive disaster-stricken information transmitted by the disaster-stricken client (100).
4. A disaster self-rescue emergency communication device based on adaptive LDPC and directional antenna according to claim 1, characterized in that the communication relay sub-device (300) comprises:
the second wireless communication module is used for receiving disaster-stricken person information transmitted by the disaster area rescue communication sub-equipment (200) and transmitting the disaster-stricken person information to the rescue center mobile phone end (400);
the second rescue mode module (303) is used for controlling the second wireless communication module to work, receiving information of disaster-stricken persons transmitted by the disaster area rescue communication sub-equipment (200), and transmitting the received information of the disaster-stricken persons to the rescue center mobile phone end (400);
the second curve transmission module (304) is used for establishing communication connection with the disaster area rescue communication sub-equipment (300) based on the self-adaptive LDPC technology and checking the transmission quality and the error correction capability of the system;
the second character transmission module (305) is used for establishing communication connection with the first character transmission (207) in the disaster area rescue communication sub-equipment (200) and testing communication between the communication relay sub-equipment (300) and the disaster area rescue communication sub-equipment (200);
a second transmission setting module (306) for setting parameters of an air rate, a communication channel, a transmission power and a communication baud rate in the communication relay sub-equipment (300);
a second clock module (307) for recording and displaying the current real-time;
and the second system setting module (308) is used for adjusting parameters of each module in the communication relay sub-device (300).
5. The adaptive LDPC and directional antenna based disaster self-rescue emergency communication device of claim 4, wherein the second wireless communication module comprises:
the second WIFI high-gain antenna module (301) is used for receiving disaster-stricken personnel information transmitted by the second high-gain directional antenna module (302) and transmitting the disaster-stricken personnel information to the rescue center mobile phone end (400);
the second high-gain directional antenna module (302) is used for receiving disaster-stricken personnel information transmitted in the disaster area rescue communication sub-equipment (200) and transmitting the disaster-stricken personnel information to the second WIFI high-gain antenna module (301);
and the second radio frequency module (309) is used for assisting the second WIFI high-gain antenna module (301) to receive disaster-stricken personnel information transmitted by the second high-gain directional antenna module (302).
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