Satellite communication based field data acquisition and broadcast system

Abstract

The application provides a satellite communication-based field data acquisition and broadcast system, relates to the technical field of emergency communication, and comprises a multi-modal communication system, an Internet of Things data acquisition and broadcast system, an early warning information broadcast system, a power supply system, an information security encryption system and a control system, the multi-modal communication system integrates a Ku-band satellite communication module, an L-band satellite communication module, a Beidou short message module and a 4G / 5G communication module; the multi-modal communication system of the application is complementary through multiple communication means such as satellites, Beidou, 4G / 5G and the like, solves the defects that the traditional system relies on ground networks, can still guarantee smooth communication links in a three-outage scene, realizes real-time transmission of early warning information, the Ku-band and L-band satellite communication modules work cooperatively, ensure that the system has bidirectional communication and emergency broadcast capabilities under extreme weather conditions, the forward play error rate is low, the transmission rate is stable, and the reliability requirements of disaster warning are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of emergency communication technology, in particular to a field data acquisition and backhaul and broadcast system based on satellite communication. BACKGROUND

[0002] In recent years, with the frequent occurrence of extreme disaster events, the communication support short board of the traditional emergency management system in the "power failure, circuit failure, network failure" extreme scene is increasingly prominent;

[0003] The traditional emergency communication system highly depends on ground base stations or optical fiber networks. In the "three breaks" (power failure, circuit failure, network failure) scene caused by earthquakes, floods and other disasters, the communication link interruption risk is extremely high, and the deployment of traditional Internet of Things devices requires pre-construction of supporting infrastructure, which has a long construction period and high cost. In addition, the existing emergency broadcast system has single function and lacks two-way communication capability, and it is difficult to ensure the real-time delivery of early warning information in extreme environments, and cannot realize the linkage of real-time disaster backhaul and accurate broadcast of early warning information. Therefore, the present application proposes a field data acquisition and backhaul and broadcast system based on satellite communication to solve the problems existing in the prior art. SUMMARY

[0004] In view of the above problems, the present application proposes a field data acquisition and backhaul and broadcast system based on satellite communication. The field data acquisition and backhaul and broadcast system based on satellite communication has two-way communication and emergency broadcast capability under extreme weather conditions, low forward play bit error rate and stable transmission rate, and meets the reliability requirements of disaster warning.

[0005] To achieve the purpose of the present application, the following technical scheme is adopted: a field data acquisition and backhaul and broadcast system based on satellite communication, comprising a multi-modal communication system, an Internet of Things data acquisition and backhaul system, an early warning information broadcast system, a power supply system, an information security encryption system and a control system. The multi-modal communication system integrates Ku-band satellite communication module, L-band satellite communication module, Beidou short message module and 4G / 5G communication module, and automatically switches the communication link according to the network state of the disaster area.

[0006] The early warning information broadcast system is used to convert the received voice and text information into audio signals and broadcast them through a loudspeaker; the power supply system is composed of a solar panel, a storage battery and a controller, and has a dual-mode power supply of mains and solar power; the information security encryption system uses a national encryption algorithm to encrypt and authenticate the transmission data; and the control system is used to remotely monitor the equipment state and switch the communication mode.

[0007] Further improvement lies in that the multi-modal communication system comprises a Ku-band satellite communication module, an L-band satellite communication module, a Beidou short message module and a 4G / 5G module, the Ku-band satellite communication module comprises a modem, a flat panel antenna, a BUC and an LNB, is used for bidirectional communication and image data back transmission, and has a forward rate of ≥100 kbps and a return rate of ≥32 kbps; the L-band satellite communication module has an omnidirectional receiving frequency of ≤2 GHz and is used for real-time broadcast of voice information flow; the Beidou short message module adopts a baseband chip embedded with an emergency command code and supports bidirectional communication; and the 4G / 5G module contains an Internet of Things SIM card and is used for regular network communication.

[0008] Further improvement lies in that the image acquisition module intercepts live images at a resolution of 1080P and a frequency of ≥4 images per minute; the meteorological sensor collects rain, wind direction, wind speed and temperature and humidity data in real time through an external sensor, and the data is back transmitted through a standardized interface; and when the data is back transmitted, the satellite or 4G / 5G link transmission is automatically selected according to the network environment.

[0009] Further improvement lies in that the early warning information broadcast system comprises a multi-format information conversion unit and a loudspeaker, the multi-format information conversion unit is used for converting received short messages, short messages or data streams into audio signals, and the loudspeaker is used for real-time broadcast and timing play of voice information flow.

[0010] Further improvement lies in that an emergency WiFi unit is further included, the emergency WiFi unit converts satellite signals into a Wi-Fi hotspot for mobile phone access to send a help-seeking message.

[0011] Further improvement lies in that the information security encryption system is used for hardware-level encryption and security authentication, the hardware-level encryption realizes SM4 algorithm encryption and decryption through an independent encryption card to prevent data leakage, and the security authentication is used for controlling short messages and short messages sent by terminals meeting the requirements;

[0012] Further improvement lies in that the information security encryption system encrypts data through an SM4 algorithm, generates a message digest through an SM3 algorithm and completes identity authentication through an SM2 algorithm, and only allows authorized terminals to access.

[0013] Further improvement lies in that the control system monitors equipment states through a matching management interface for 7*24 hours, and dynamically selects an optimal communication link according to signal strength and bit error rate parameters.

[0014] Further improvement lies in that the power management of the power supply system implements a three-stage strategy: solar direct supply in sufficient sunlight; battery power supply under weak light conditions; and super capacitor instantaneous discharge under extreme load conditions.

[0015] Further improvement lies in that the overall system has an IP66 protection level, integrates a lightning protection module and a surge protection device, and stably works in a non-condensation environment with humidity of 5%-95%.

[0016] The beneficial effects of the present application are:

[0017] 1. The multi-modal communication system of the present application solves the defects of traditional systems relying on ground networks through complementation of multiple communication means such as satellites, Beidou, 4G / 5G, etc., still ensures smooth communication link in a three-break scenario, realizes real-time transmission of early warning information, and ensures that the system has bidirectional communication and emergency broadcasting capabilities under extreme weather conditions through the cooperative work of Ku-band and L-band satellite communication modules, low forward play bit error rate, stable transmission rate, and meets the reliability requirements of disaster warning.

[0018] 2. The Internet of Things data acquisition and backhaul system of the present application realizes high-frequency acquisition and backhaul of on-site images and environmental data, provides visual decision basis for the command center, is more intuitive and efficient than traditional text reports, the solar power and battery combination power supply system breaks away from dependence on city power, adapts to deployment in areas without power grid coverage, the hibernation low-power design prolongs the standby time of the equipment, and improves the working stability of the system during the disaster duration.

[0019] 3. The information security encryption system of the present application adopts a national cryptographic algorithm system to form a whole-link protection from data encryption, identity authentication to message integrity check, prevent illegal data intrusion and information leakage, and the satellite signal to Wi-Fi function enables ordinary mobile phones to access the emergency network without the need for a special terminal, reduces the threshold for help, expands the communication coverage range of the disaster site, and improves the rescue response efficiency.

[0020] 4. The overall deployment of the system of the present application does not require optical fiber and network cable construction, can be quickly landed through a pole type installation kit, reduces costs compared with traditional solutions, supports remote monitoring and control, realizes 7x24 hours unattended operation and maintenance, realizes the integration of data acquisition, communication transmission, and broadcast reporting through multi-module integrated design, forms a closed-loop emergency response mechanism through a supporting management system, and promotes efficient linkage of disaster warning and response. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a functional block diagram of the present application;

[0022] Figure 2 is a schematic diagram of the Ku-band satellite communication module of the present application;

[0023] Figure 3 is a schematic diagram of the L-band satellite communication module of the present application. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present application, the present application will be further described below in conjunction with examples, which are only used to explain the present application and do not constitute a limitation on the scope of protection of the present application.

[0025] Example one

[0026] According to Figure 1 、 2 , 3, the present embodiment proposes a satellite communication-based field data acquisition and backhaul and broadcast system, which includes a multi-modal communication system, an Internet of Things data acquisition and backhaul system, an early warning information broadcast system, a power supply system, an information security encryption system and a control system. The multi-modal communication system integrates a Ku-band satellite communication module, an L-band satellite communication module, a Beidou short message module and a 4G / 5G communication module, and automatically switches the communication link according to the network state in the disaster area; the Internet of Things data acquisition and backhaul system includes an image acquisition module and a meteorological sensor, which is used to acquire field images and environmental data and backhaul them to the command center;

[0027] The early warning information broadcast system is used to convert the received voice and text information into audio signals and broadcast them through a loudspeaker; the power supply system is composed of a solar panel, a storage battery and a controller, and has dual-mode power supply of mains and solar power; the information security encryption system uses a national encryption algorithm to encrypt the transmission data and perform identity authentication; the control system is used to remotely monitor the equipment state and switch the communication mode. Through the complementation of satellite, Beidou, 4G / 5G and other communication means, the defects of traditional systems relying on ground networks are solved, and the communication link is still smooth in a three-break scenario, realizing real-time transmission of early warning information. The cooperative work of the Ku-band and L-band satellite communication modules ensures that the system has bidirectional communication and emergency broadcast capability under extreme weather conditions, the forward play error rate is low, the transmission rate is stable, and the reliability requirements of disaster warning are met.

[0028] The multi-modal communication system includes a Ku-band satellite communication module, an L-band satellite communication module, a Beidou short message module and a 4G / 5G module. The Ku-band satellite communication module includes a modem, a flat panel antenna, a BUC and an LNB, which is used for bidirectional communication and image data backhaul, with a forward rate of ≥100 kbps and a return rate of ≥32 kbps; the L-band satellite communication module has an omnidirectional receiving frequency of ≤2 GHz, which is used for real-time broadcast of voice information stream; the Beidou short message module uses a baseband chip to embed emergency command coding and supports bidirectional communication; the 4G / 5G module contains an Internet of Things SIM card, which is used for regular network communication.

[0029] The image acquisition module intercepts live images at a resolution of 1080P, and the frequency is greater than or equal to 4 images per minute; the meteorological sensor collects rainfall, wind direction, wind speed, temperature and humidity data in real time through an external sensor, and the data is returned through a standardized interface; when the data is returned, the satellite or 4G / 5G link transmission data is automatically selected according to the network environment. The Internet of Things data acquisition and return system realizes high-frequency acquisition and return of live images and environmental data, and provides visual decision basis for the command center. Compared with traditional text reports, it is more intuitive and efficient. The combination of solar power and battery power supply system breaks the dependence on city power supply, adapts to the deployment in areas without power grid coverage, and prolongs the standby time of the device through sleep low-power design, thereby improving the working stability of the system during the disaster duration.

[0030] The early warning information broadcast system includes a multi-format information conversion unit and a loudspeaker, the multi-format information conversion unit is used for converting received short messages, short messages or data streams into audio signals; the loudspeaker is used for real-time broadcast and timing play of voice information stream.

[0031] It also includes an emergency WiFi unit, which converts satellite signals into a Wi-Fi hotspot for mobile phone access to send help information.

[0032] The information security encryption system is used for hardware-level encryption and security authentication. The hardware-level encryption realizes SM4 algorithm encryption and decryption through an independent encryption card to prevent data leakage. The security authentication is used to control the reception of short messages and short messages sent by terminals meeting the requirements;

[0033] The information security encryption system uses SM4 algorithm to encrypt data, SM3 algorithm to generate message digest, and SM2 algorithm to complete identity authentication, and only allows authorized terminals to access. The information security encryption system uses the national cryptography algorithm system to form a full-link protection from data encryption, identity authentication to message integrity verification, preventing illegal data intrusion and information leakage. The satellite signal to Wi-Fi function allows ordinary mobile phones to access the emergency network without the need for a dedicated terminal, reduces the threshold for help, expands the communication coverage of the disaster site, and improves the response efficiency of rescue.

[0034] The control system monitors the device state through a matching management interface 7x24 hours, and dynamically selects the optimal communication link according to the signal strength and bit error rate parameters.

[0035] The power management of the power supply system implements a three-stage strategy: solar direct supply in sufficient sunlight; switch to battery power supply under weak light conditions; and use super capacitor instantaneous discharge in extreme load conditions.

[0036] The overall system has an IP66 protection level, integrates a lightning protection module and a surge protection device, and works stably in a non-condensing environment with a humidity of 5%-95%.

[0037] Example Two

[0038] According to Figure 1 , 2 , 3, the present embodiment proposes a satellite communication-based field data collection and transmission and broadcast system, which includes a satellite communication module, a Beidou short message module, a 4G communication module, a Tian Tong module, a broadcast loudspeaker, a power supply system, etc. Through a supporting management system, the satellite communication-based field data collection and transmission and broadcast capability can be realized, and the emergency call one-key pass-through (emergency call integrated device) can be accessed. This device combines the advantages of ground communication and satellite communication. Compared with the traditional Internet of Things transmission system, it does not rely on ground networks and still has two-way transmission capability when the ground network is damaged. Moreover, it can be directly deployed in areas without ground network coverage, without the need for supporting optical fiber, network cable, etc. construction, which can greatly reduce the deployment and maintenance costs.

[0039] Deployed in disaster-prone rural areas.

[0040] It is built-in with 4G / 5G, Beidou short message, satellite communication, L-band and other communication means, which can automatically switch communication links according to the damage of the communication network in the disaster area and the weather conditions, ensuring that the communication link between the disaster area and the rear can be connected in extremely harsh environments.

[0041] It has network conversion function. When the conventional communication network is damaged by disaster, the device can convert satellite communication signals into Wi-Fi signals, and ordinary mobile phones can connect to the network to send help information.

[0042] It has the function of collecting environmental elements in the disaster area, which can collect real-time meteorological information and picture information in the disaster area and transmit them to the rear command department in real time.

[0043] The popularization and application of this system is an important measure to further improve the disaster warning information release and response mechanism, realize efficient linkage of disaster warning and response, improve the disaster prevention and response capabilities of emergency management departments at all levels, and improve the pertinence and accuracy of disaster warning information release.

[0044] The system terminal is composed of a multi-modal communication system, an Internet of Things data collection and transmission system, an early warning information broadcast system, a power supply system, an information security encryption system, and a control system. The multi-modal communication system is composed of a Ku-band satellite communication module, an L-band satellite communication module, a Beidou short message module, and a 4 / 5G module. The multiple transmission methods are complementary to ensure that the transmission is not affected. The Internet of Things data collection and transmission system is an image transmission system, and the power supply system is a solar and battery power supply system. The functional block diagram is as follows Figure 1 .

[0045] Ku-band satellite communication module: contains Ku-band communication modem, antenna, BUC, LNB and other modules, with the ability to realize Ku-band two-way communication through synchronous satellite, can receive real-time voice play and timed play; can return image data information and state information.

[0046] L-band satellite communication module: contains L-band communication modem, radio frequency components, antenna, etc.; with the ability to receive real-time emergency play based on L-band or lower frequency satellite, can receive real-time voice and text play information alone in extremely harsh environments, and can perform real-time voice play and timed play;

[0047] Other communication modules: Beidou short message contains Beidou communication module, Beidou antenna, Beidou communication card; 4 / 5G communication contains 4 / 5G communication module, 4 / 5G antenna and communication SIM card;

[0048] Internet of Things data collection and return system: with image acquisition function, can choose to return on-site images in picture mode according to disaster relief and rescue needs and actual network environment;

[0049] Early warning information broadcast system: can convert different formats of early warning information such as voice, text, and SMS into audio format for loudspeaker broadcast.

[0050] Power supply system: contains solar monocrystalline silicon cell panel, storage battery, controller, etc., which can supply power to the terminal in the absence of commercial power.

[0051] Information security encryption system: Information security encryption system: built-in hardware encryption and decryption, ensures the safety of information sent through Ku communication satellite, prevents illegal data transmission. Encryption and decryption algorithm uses national algorithm standard SM4, message digest algorithm uses national algorithm standard SM3, identity authentication algorithm uses national algorithm standard SM2, prevents illegal information transmission.

[0052] Control system: Control system contains control box composed of switches, controllers and other modules.

[0053] Other functions

[0054] The terminal has the function of national commercial cipher algorithm encryption and decryption. The encryption and decryption algorithm uses national algorithm standard SM4, the message digest algorithm uses national algorithm standard SM3, and the identity authentication algorithm uses national algorithm standard SM2;

[0055] The terminal contains a lightning protection module and has effective lightning protection and surge protection;

[0056] The terminal has a device state reporting function, and the monitoring center can remotely monitor and control the device;

[0057] The terminal can access the emergency call one-key-through system;

[0058] System features

[0059] It has multiple communication capabilities, automatic switching of communication links as needed in extremely harsh environments, and the ability to receive and broadcast real-time voice information streams. Through multi-modal communication mode and multiple link protection, timely and accurate delivery of warning information is achieved.

[0060] Low cost, low construction difficulty, easy installation and maintenance, excellent performance.

[0061] It has device status feedback function, and the control center can remotely monitor and control the terminal equipment 7x24 hours, to ensure that the emergency call terminal can respond in the first time when natural disasters occur, and timely and accurately deliver warning information to the corresponding area and the masses.

[0062] It has image data feedback capability, which can feedback real-time pictures to the command center when natural disasters are about to occur or have occurred, providing strong support for command center command and decision-making.

[0063] Technical specifications

[0064] Multi-modal communication system

[0065] 4G / 5G SMS communication:

[0066] It has 4G / 5G SMS communication function, including Internet of Things card (can send and receive SMS)

[0067] Two-way satellite communication:

[0068] Flat panel antenna, equivalent aperture 0.3 meters.

[0069] Transmit 13.75~14.5GHz, receive 10.7~12.75GHz; Low frequency omnidirectional receiving frequency ≤2GHz;

[0070] It has harsh environment communication capability, bit error rate ≤1×10-6 when forward play channel Es / N0=-8dB, forward play rate: ≥100kbps; return transmission rate ≥32kbps

[0071] Beidou short message communication:

[0072] Independent short message module, baseband chip with encoding according to "Emergency Command Coding System (Initial Edition)", bidirectional communication, maximum support 131 Chinese characters, 5 minutes frequency.

[0073] Communication frequency S: 2491.75±8.16MHz, maximum length of regional message 131 Chinese characters.

[0074] The receiving sensitivity is: -130.0 dBm (8 Kbps), -127.5 dBm (16 Kbps) and -123.8 dBm (24 Kbps), and the number of receiving channels is 14.

[0075] L-band satellite communication:

[0076] The omnidirectional receiving frequency is ≤2 GHz, the message length is not less than 500 Chinese characters, and the receiving and broadcasting of real-time voice information stream are supported, and the voice information stream time length is supported for not less than 10 minutes

[0077] Channel switching function: support remote manual switching and automatic switching

[0078] Security encryption

[0079] Hardware encryption card encryption, information encryption and decryption algorithm uses national algorithm standard SM4, message digest algorithm uses national algorithm standard SM3, and identity authentication algorithm uses national algorithm standard SM2

[0080] Sound amplification and broadcasting

[0081] Trumpet horn, power: 40W; automatic conversion of text information from short message, short message, data channel, conversion of text information into audio format for broadcasting; capable of receiving audio information for broadcasting.

[0082] Data acquisition function

[0083] Image acquisition function:

[0084] Picture format: JPG; definition: 1080P; interception frequency: 4 pictures / minute; acquisition method: automatic / manual.

[0085] Weather element acquisition function:

[0086] Support optional installation of rain, wind direction, wind power, temperature, humidity sensor, collect weather data, with docking interface.

[0087] Protection level

[0088] With IP66, anti-rust, with lightning protection facilities;

[0089] Working environment

[0090] -40℃~+65℃ range can work normally, ensure the environment humidity 5% to 95% not condensation

[0091] Power supply system

[0092] With solar power supply and battery power supply function; with power supply, solar power supply dual mode, solar module power 100W; with battery, capacity 100Ah / 12V; sleep power consumption: 240mW;

[0093] Short message, SMS security

[0094] The operator core network supports security policy, and only supports short messages sent by the "95707" code number;

[0095] Only receive short message information sent by the terminal with baseband chip added with the code system conforming to the "Emergency Command Coding System (Initial Edition)".

[0096] Emergency WiFi:

[0097] Satellite communication signals are converted into Wi-Fi signals, and ordinary mobile phones can connect to the network to send help information;

[0098] Deployment mode

[0099] Self-pole type installation kit, supporting pole installation, roof floor installation and various modes.

[0100] The multi-modal communication system of the application is complementary through satellite, Beidou, 4G / 5G and other communication means, solves the defects of traditional system relying on ground network, and still guarantees the smooth communication link in three broken scenes, realizes the real-time transmission of early warning information, the cooperative work of Ku frequency band and L wave band satellite communication module, ensures that the system has bidirectional communication and emergency broadcast ability under extreme weather conditions, the forward play error rate is low, the transmission rate is stable, and the reliability requirement of disaster warning is met. The Internet of Things data acquisition and backhaul system realizes high-frequency acquisition and backhaul of on-site images and environmental data, provides visual decision basis for the command center, is more intuitive and efficient than traditional text report, the combination of solar energy and battery power supply system breaks the dependence on city power, adapts to the deployment in areas without power grid coverage, the sleep low-power design prolongs the standby time of the equipment, and improves the working stability of the system in the disaster duration. The information security encryption system adopts the national cryptography algorithm system, forms whole-link protection from data encryption, identity authentication to message integrity check, prevents illegal data intrusion and information leakage, the satellite signal to Wi-Fi function enables ordinary mobile phones to access the emergency network without special terminals, reduces the help threshold, expands the communication coverage range of the disaster site, and improves the rescue response efficiency. The overall deployment of the system does not need optical fiber and network cable construction, and can be quickly landed through the pole type installation kit, compared with the traditional scheme, the cost is reduced, and remote monitoring and control are supported, 7*24h unattended operation and maintenance are realized, the multi-module integrated design realizes the integrated function of data acquisition, communication transmission and broadcast broadcast, forms a closed-loop emergency response mechanism through the matching management system, and promotes the efficient linkage of disaster warning and response.

[0101] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A satellite communication-based field data acquisition, backhaul and broadcast system, comprising a multi-modal communication system, an Internet of Things data acquisition backhaul system, an early warning information broadcast system, a power supply system, an information security encryption system and a control system, characterized in that: The multi-modal communication system integrates Ku-band satellite communication module, L-band satellite communication module, Beidou short message module and 4G / 5G communication module, and automatically switches communication link according to network state in disaster area; the Internet of Things data acquisition and backhaul system includes image acquisition module and weather sensor, and is used for acquiring on-site image and environment data and backhauling to command center; The early warning information broadcast system is used for converting received voice and text information into audio signals and broadcasting through loudspeaker; the power supply system is composed of solar panel, storage battery and controller, and has dual-mode power supply of commercial power and solar energy; the information security encryption system uses national encryption algorithm to encrypt and authenticate transmission data; the control system is used for remotely monitoring equipment state and switching communication mode; The multi-modal communication system includes Ku-band satellite communication module, L-band satellite communication module, Beidou short message module and 4G / 5G module, the Ku-band satellite communication module includes modem, flat panel antenna, BUC and LNB, and is used for bidirectional communication and image data backhaul, and forward rate is greater than or equal to 100 kbps and return rate is greater than or equal to 32 kbps; the L-band satellite communication module has omnidirectional receiving frequency less than or equal to 2 GHz, and is used for real-time broadcast of voice information stream; the Beidou short message module uses baseband chip embedded emergency command code, and supports bidirectional communication; The 4G / 5G module contains Internet of Things SIM card, and is used for regular network communication, the image acquisition module intercepts on-site image at 1080P resolution, and frequency is greater than or equal to 4 pictures per minute; the weather sensor collects rain, wind direction, wind speed, temperature and humidity data in real time through external sensor, and data is backhauled through standardized interface; when data is backhauled, satellite or 4G / 5G link is automatically selected according to network environment to transmit data.

2. The satellite communication based live data acquisition, backhaul and broadcast system as claimed in claim 1 wherein: The early warning information broadcast system includes multi-format information conversion unit and loudspeaker, the multi-format information conversion unit is used for converting received short message, short message or data stream into audio signal; the loudspeaker is used for real-time broadcast and timing play of voice information stream.

3. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 1, wherein: It also includes emergency WiFi unit, which converts satellite signal into Wi-Fi hotspot for mobile phone to access and send help information.

4. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 1, wherein: The information security encryption system is used for hardware-level encryption and security authentication, the hardware-level encryption realizes SM4 algorithm encryption and decryption through independent encryption card to prevent data leakage; the security authentication is used for controlling short message and short message sent by terminal meeting requirements.

5. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 4, wherein: The information security encryption encrypts data through SM4 algorithm, generates message digest through SM3 algorithm and completes identity authentication through SM2 algorithm, and only allows authorized terminal to access.

6. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 1, wherein: The control system monitors equipment state through matching management interface 7*24 hours, and dynamically selects optimal communication link according to signal strength and bit error rate parameters.

7. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 1, wherein: The power management of the power supply system implements three-stage strategy: solar direct supply under sufficient sunlight; storage battery power supply under weak light condition; super capacitor instantaneous discharge under extreme load condition.

8. The satellite communication based field data acquisition, backhaul and broadcast system as claimed in claim 1, wherein: The whole system has IP66 protection level, integrates lightning protection module and surge protection device, and stably works in a non-condensing environment with humidity of 5%-95%.

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