Emergency calling terminal system with image data return capability

Abstract

The invention provides an emergency response terminal system with image data return capability, which relates to the technical field of emergency response terminals and comprises an emergency response terminal management subsystem, an emergency response terminal, a multi-mode communication network, an image data return channel and an equipment state monitoring system. The emergency call terminal management subsystem is deployed on an emergency management platform and is used for generating and auditing an early warning task, dynamically selecting a communication link, interacting with a terminal through a satellite network and receiving a field image and equipment state data returned by the terminal; through the satellite, Beidou and 4 / 5G multi-link redundancy design, it is ensured that early warning information can be reached under the three-disconnection scene of network disconnection, power failure and disconnection, the problem of communication failure of a traditional system is solved, low-delay and wide-coverage transmission of the early warning information is achieved, the encrypted image return function is adopted for providing real-time disaster situation pictures for a command center, the rescue decision accuracy is improved, and the rescue cost is reduced. And the decision support capability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency response terminals, and in particular to an emergency response terminal system capable of transmitting image data back. Background Art

[0002] In today's frequent natural disasters, such as heavy rainstorms and earthquakes, traditional emergency response systems have exposed many shortcomings. Traditional emergency response systems rely heavily on ground communication facilities (such as optical fibers and base stations) and completely fail in the "three outages" (power outage, network outage, and circuit breakage) scenario. They also have high construction costs and limited coverage. The existing system lacks real-time image return capabilities, and the command center cannot obtain on-site visualization data. At the same time, the equipment status cannot be remotely monitored, and fault response is delayed, resulting in insufficient reliability of emergency warnings. In addition, a single communication link is susceptible to interference from extreme environments, manual operation and maintenance are inefficient, the encryption mechanism is weak, and there is a risk of information leakage. Therefore, the present invention proposes an emergency response terminal system with image data return capabilities to solve the problems existing in the prior art. Summary of the Invention

[0003] In response to the above problems, the present invention proposes an emergency response terminal system with the ability to transmit image data back. The emergency response terminal system with the ability to transmit image data back uses satellite, Beidou and 4 / 5G multi-link redundant design to ensure that warning information can be reached in the "three-break" scenarios of network outage, power outage and circuit breakage, solve the communication failure problem of traditional systems, achieve low-latency and wide-coverage transmission of warning information, and use encrypted image transmission function to provide the command center with real-time disaster pictures, thereby improving the accuracy of rescue decisions and enhancing decision-making support capabilities.

[0004] To achieve the objectives of the present invention, the present invention is implemented through the following technical solutions: an emergency response terminal system with image data return transmission capability, comprising an emergency response terminal management subsystem, an emergency response terminal, a multimodal communication network, an image data return channel, and an equipment status monitoring system. The emergency response terminal management subsystem is deployed on an emergency management platform and is used to generate and review warning tasks, dynamically select communication links, interact with the terminal via a satellite network, and receive on-site images and equipment status data returned by the terminal. The emergency response terminal is deployed in high-risk disaster areas and integrates a satellite communication module, a Beidou short message module, a 4 / 5G communication module, an image acquisition module, a voice broadcast module, an equipment status monitoring module, and a power management module. The multimodal communication network supports physically isolated links of Ku-band satellites, Beidou satellites and operator networks, and automatically switches communication modes according to preset strategies; the image data return channel transmits on-site images to the emergency response terminal management subsystem in real time through encrypted transmission via the satellite network; the equipment status monitoring system is used to collect terminal operating parameters in real time and transmit them back via satellite, supporting remote diagnosis and maintenance.

[0005] Further improvements are: the satellite communication module includes a Ku-band satellite transceiver unit, a Beidou short message receiving unit, and a multi-link switching controller; the Ku-band satellite transceiver unit is used to receive real-time voice warning information and text instructions from the emergency call terminal management subsystem, and transmit task execution receipts through the satellite network; the Beidou short message receiving unit is used to parse the text warning information sent by the Beidou satellite and trigger the voice broadcast module to play; the multi-link switching controller automatically switches the optimal communication link according to signal strength, task priority and energy consumption.

[0006] Further improvements are: the image acquisition module includes a wide-angle high-definition camera, an image preprocessing unit and an encryption transmission unit. The wide-angle high-definition camera is used for image acquisition in an environment of -40°C to 70°C; the image preprocessing unit uses H.265 encoding to compress data and add timestamps and geographic location tags; the encryption transmission unit encrypts the image data based on the SM4 algorithm and transmits it back via a satellite network.

[0007] Further improvements are: the device status monitoring module includes a multi-parameter sensor group, a self-test and alarm unit and a remote firmware upgrade interface, the multi-parameter sensor group is used to monitor the terminal's battery voltage, signal strength, ambient temperature and humidity, and casing integrity; the self-test and alarm unit is used to automatically switch to the backup link and send a fault code to the emergency call terminal management subsystem when an equipment abnormality is detected; the remote firmware upgrade interface is used to update the terminal software via a satellite network.

[0008] A further improvement is that the power management module includes a foldable solar panel, a lithium iron phosphate battery pack and an intelligent power consumption controller, and the intelligent power consumption controller supports remote wake-up and task-triggered wake-up.

[0009] Further improvements are: the switching strategy of the multimodal communication network is: dynamic priority allocation, forced activation of satellite links for emergency tasks, and selection of the optimal link according to signal quality for routine tasks; energy consumption optimization mode, giving priority to Beidou short message communication when the battery is low.

[0010] Further improvements are: the voice broadcast module includes a multi-sound source fusion unit, a directional sound wave transmitter and a multi-language switching function. The multi-sound source fusion unit is used for real-time voice, text-to-speech (TTS) and pre-recorded audio playback; the maximum sound pressure level of the directional sound wave transmitter is ≥120dB, and the effective coverage radius is ≥500 meters.

[0011] A further improvement is that the shell of the emergency call terminal adopts IP66 protection grade, is filled with shock-resistant buffer material, and is coated with salt spray corrosion-resistant coating on the surface.

[0012] Further improvements are as follows: the emergency response terminal management subsystem includes a disaster scenario simulation engine, a three-dimensional geographic information interface and an automated review mechanism. The disaster scenario simulation engine is used to pre-generate warning templates and response strategies for various disasters; the three-dimensional geographic information interface is used to display the terminal location, image return screen and disaster area situation in real time; the automated review mechanism is used to automatically upgrade timed-out and unprocessed warning tasks to the upper-level platform.

[0013] Further improvements are: the emergency call terminal management subsystem also includes a system security module, and the system security module includes a national secret algorithm hardware encryption chip, an anti-physical disassembly mechanism and a communication link two-way authentication unit. The national secret algorithm hardware encryption chip integrates SM2 identity authentication, SM3 message digest and SM4 data encryption functions; the anti-physical disassembly mechanism is used to automatically erase the key and send a positioning alarm after the disassembly is triggered; the communication link two-way authentication unit is used for two-way authentication to prevent illegal equipment from accessing.

[0014] The beneficial effects of the present invention are: 1. This invention uses satellite, Beidou and 4 / 5G multi-link redundant design to ensure that warning information can be reached in the "three-break" scenarios of network outage, power outage and circuit breakage, solving the communication failure problem of traditional systems, achieving low-latency and wide-coverage transmission of warning information, and using encrypted image return function to provide the command center with real-time disaster images, thereby improving the accuracy of rescue decisions and enhancing decision-making support capabilities.

[0015] 2. The present invention monitors the status of equipment and performs remote maintenance 24 / 7, reducing manual inspection costs and improving fault repair efficiency.

[0016] 3. The present invention adopts IP66 protective shell and lightweight structure, supports rapid deployment to complex terrain, reduces construction costs, and adopts a combination of solar energy and high-capacity batteries to ensure continuous operation in an environment without mains power and reduce sleep power consumption.

[0017] 4. The present invention adopts a security system with full-link encryption from identity authentication to data transmission to resist network attacks and information tampering, supports voice, text, and multi-language broadcasting, and has a wider coverage radius to ensure that all personnel in high-risk areas can receive it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the warning release task of the present invention; Figure 2 This is a schematic diagram of the data return task of the present invention; Figure 3 It is a schematic diagram of satellite network data transmission of the present invention. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] Example 1 according to Figure 1 、 2 As shown in Figures 3 and 3, this embodiment proposes an emergency response terminal system with image data return capability, including an emergency response terminal management subsystem, an emergency response terminal, a multimodal communication network, an image data return channel, and an equipment status monitoring system. The emergency response terminal management subsystem is deployed on the emergency management platform and is used to generate and review warning tasks, dynamically select communication links, interact with the terminal via a satellite network, and receive on-site images and equipment status data returned by the terminal. The emergency response terminal is deployed in high-risk disaster areas and integrates a satellite communication module, a Beidou short message module, a 4 / 5G communication module, an image acquisition module, a voice broadcast module, a equipment status monitoring module, and a power management module. The multimodal communication network supports physically isolated links between Ku-band satellites, Beidou satellites, and operator networks, automatically switching communication modes according to preset strategies. The image data return channel transmits on-site images to the emergency response terminal management subsystem in real-time, encrypted form via the satellite network. The equipment status monitoring system collects terminal operating parameters in real time and transmits them back via satellite, supporting remote diagnosis and maintenance. During use, the satellite, Beidou, and 4 / 5G multi-link redundancy design ensures that warning information is accessible in the event of network, power, and circuit outages, resolving communication failure issues with traditional systems and enabling low-latency, wide-coverage transmission of warning information. The encrypted image return function also provides the command center with real-time disaster footage, improving the accuracy of rescue decisions and enhancing decision-making support capabilities.

[0021] The satellite communication module includes a Ku-band satellite transceiver unit, a Beidou short message receiving unit, and a multi-link switching controller. The Ku-band satellite transceiver unit is used to receive real-time voice warning information and text instructions from the emergency call terminal management subsystem, and transmit task execution receipts through the satellite network; the Beidou short message receiving unit is used to parse the text warning information sent by the Beidou satellite and trigger the voice broadcast module to play; the multi-link switching controller automatically switches the optimal communication link according to signal strength, task priority and energy consumption.

[0022] The image acquisition module includes a wide-angle high-definition camera, an image preprocessing unit and an encryption transmission unit. The wide-angle high-definition camera is used to acquire images in an environment of -40°C to 70°C; the image preprocessing unit uses H.265 encoding to compress data and add timestamps and geographic location tags; the encryption transmission unit encrypts the image data based on the SM4 algorithm and transmits it back via a satellite network.

[0023] The device status monitoring module includes a multi-parameter sensor group, a self-test and alarm unit, and a remote firmware upgrade interface. The multi-parameter sensor group is used to monitor the terminal's battery voltage, signal strength, ambient temperature and humidity, and casing integrity; the self-test and alarm unit is used to automatically switch to a backup link and send a fault code to the emergency call terminal management subsystem when an equipment abnormality is detected; the remote firmware upgrade interface is used to update the terminal software via a satellite network.

[0024] The power management module includes a foldable solar panel, a lithium iron phosphate battery pack and an intelligent power consumption controller, and the intelligent power consumption controller supports remote wake-up and task-triggered wake-up.

[0025] The switching strategy of the multimodal communication network is as follows: dynamic priority allocation, mandatory activation of satellite links for emergency tasks, and selection of the optimal link according to signal quality for routine tasks; energy consumption optimization mode, giving priority to Beidou short message communication when the battery is low.

[0026] The voice broadcast module includes a multi-sound source fusion unit, a directional sound wave transmitter and a multi-language switching function. The multi-sound source fusion unit is used for real-time voice, text-to-speech (TTS) and pre-recorded audio playback; the maximum sound pressure level of the directional sound wave transmitter is ≥120dB, and the effective coverage radius is ≥500 meters.

[0027] The emergency call terminal features an IP66-rated enclosure, is filled with shock-resistant cushioning material, and is coated with a salt spray corrosion-resistant coating. Its IP66 enclosure and lightweight structure allow for rapid deployment in complex terrain, reducing construction costs. Its combination of solar power and a high-capacity battery ensures continuous operation even in off-grid environments, reducing power consumption in sleep mode.

[0028] The emergency response terminal management subsystem includes a disaster scenario simulation engine, a three-dimensional geographic information interface and an automated review mechanism. The disaster scenario simulation engine is used to pre-generate warning templates and response strategies for various disasters; the three-dimensional geographic information interface is used to display the terminal location, image return screen and disaster area situation in real time; the automated review mechanism is used to automatically upgrade timed-out and unprocessed warning tasks to the upper-level platform.

[0029] The emergency call terminal management subsystem also includes a system security module, which includes a hardware encryption chip with a national secret algorithm, an anti-physical disassembly mechanism, and a communication link bidirectional authentication unit. The national secret algorithm hardware encryption chip integrates SM2 identity authentication, SM3 message digest, and SM4 data encryption functions; the anti-physical disassembly mechanism automatically erases the key and sends a positioning alarm when disassembly is triggered; the communication link bidirectional authentication unit performs bidirectional authentication to prevent unauthorized device access. The system utilizes a security system with full-link encryption from identity authentication to data transmission to resist network attacks and information tampering. It supports voice, text, and multilingual broadcasts with a coverage radius of up to 500 meters, ensuring that all personnel in high-risk areas receive notifications.

[0030] Example 2 according to Figure 1 、 2 As shown in FIG3 , this embodiment proposes an emergency call terminal system with image data return capability, including an emergency call terminal management subsystem and an emergency call terminal; Emergency response terminals are deployed at the front end. A two-way satellite communication network should interconnect with the government's external network via the Ku-band Asia-Pacific 9 satellite to enable the dissemination of text and real-time voice warning information. The BeiDou short message communication network should interconnect with the command network via the BeiDou-3 satellite to enable the dissemination of text warning information. 4 / 5G SMS text messaging can also be used to deliver text warning information via the basic operator's network. Each communication network module should be physically isolated to ensure the security of the communication link.

[0031] The emergency response terminal performance must meet the following requirements: Response Speed: In emergencies, time is of the essence. The faster the emergency response terminal responds, the more quickly local residents and rescue teams can take protective measures. Therefore, the time it takes for warning information to reach the emergency response terminal should not exceed 30 seconds.

[0032] Reliability: In emergencies, the reliability of emergency response terminals is crucial. They must operate stably in a variety of harsh environments to prevent equipment failures from impacting the issuance of warning signals. Therefore, emergency response terminals must be capable of 24 / 7 real-time monitoring by a monitoring center.

[0033] Battery life and endurance: Emergency response terminals typically require extended periods of standby time, making battery life and endurance important factors in evaluating their performance. Sleep power consumption should be less than 250mW, and the solar panel power should be at least 100W to ensure normal operation even without mains power. The battery capacity should be at least 100Ah / 12V.

[0034] Dustproof and waterproof performance: Emergency call terminals should have good dustproof and waterproof performance and can operate stably in harsh environmental conditions. This helps improve the durability and reliability of the equipment. Therefore, emergency call terminals should have IP66 protection.

[0035] Security: Emergency response terminals involve privacy and security concerns. Therefore, the device must have comprehensive security measures to prevent information leakage. Built-in hardware encryption and decryption ensures the security of information sent via the Ku communication satellite and prevents illegal data transmission. The encryption and decryption algorithms use the national algorithm standard SM4, the message digest algorithm uses the national algorithm standard SM3, and the identity authentication algorithm uses the national algorithm standard SM2 to prevent illegal information transmission.

[0036] The emergency response terminal has multiple satellite communication capabilities and can still communicate under various extreme conditions. It can realize real-time voice and text-to-speech broadcasting functions. Data transmission is encrypted using national secret algorithms to ensure data security.

[0037] Emergency call terminal process The emergency response task is generated by the emergency response business control function of the emergency response terminal. The business is mainly divided into warning release tasks and data return tasks.

[0038] When an early warning is issued, the task management module generates the broadcast content and broadcast objects through the early warning content management module and the task object management module respectively according to the disaster information that should be input. The task scheduling management module matches the communication method according to the communication status of the emergency response terminal and the pre-made strategy. After the early warning task information is generated, it is reviewed by relevant staff. When the review timeouts, the platform automatically triggers the "Disaster Emergency Rescue Assistance" SMS and outbound call to remind staff to review and process it. The early warning information is sent to the Ministry's "Disaster Emergency Rescue Assistance" platform, which implements text broadcast + real-time voice broadcast based on the satellite network; or to the Beidou service platform, which sends the corresponding information to the emergency response terminal via the Beidou satellite. Finally, the emergency response terminal converts the Beidou text warning information into a voice message and plays it to remind the people and relevant personnel related to the disaster; the emergency response terminal's receipt of task execution is transmitted back to the business control platform via the Ministry's "Disaster Emergency Rescue Assistance" platform communication satellite network.

[0039] The emergency response terminal is primarily used for broadcasting early warnings in disaster-prone areas, enabling widespread audio warnings within the first instance of an emergency. Leveraging satellite networks for data transmission, this device addresses the shortcomings of traditional broadcasting projects, such as the labor-intensive and difficult installation of supporting infrastructure like optical fiber, network cables, and base stations, resulting in limited coverage, limited regional targeting, overreliance on terrestrial communication equipment, and poor resilience. It offers advantages such as low latency, wide coverage, reliability, and low cost, making it a crucial tool for disaster prevention and mitigation.

[0040] The emergency response terminal management subsystem is deployed on the emergency call one-touch platform. Through the Ministry's "Disaster Emergency Rescue Assistance" platform, it uses the satellite network to realize data transmission with the emergency response terminal. It can broadcast real-time voice information through the satellite network, and can also send text information through Beidou short messages or satellite networks. The emergency response terminal converts the text information into voice information for voice playback.

[0041] The emergency response terminal management subsystem is mainly used in early warning and rescue command scenarios in disaster-prone areas. It can provide large-scale audio warnings and on-site image feedback as soon as an emergency occurs, providing support for rescue command decisions. The data is processed using a national secret algorithm to ensure that the system security meets national standards.

[0042] The system uses satellite networks to achieve data transmission, and can broadcast real-time voice information through satellite networks. It can also send text information through Beidou short messages or satellite networks. The emergency response terminal converts the text information into voice information for voice playback; the emergency response terminal can receive voice and text playback information separately through the real-time response playback channel, and can perform real-time voice playback and timed playback.

[0043] This system addresses the shortcomings of traditional broadcasting projects, such as the large and complex installation of supporting facilities such as optical fiber, network cables, and base stations, resulting in limited coverage, limited regional targeting, over-reliance on ground-based communication equipment, and poor resilience. It offers advantages such as low latency, wide coverage, security, reliability, and low cost, making it a valuable tool for disaster prevention and mitigation. The system also utilizes national commercial cryptographic algorithms for encryption and decryption, including key management and information encryption and decryption. The encryption and decryption algorithms utilize national algorithm standards SM4, the message digest algorithm utilizes national algorithm standards SM3, and the identity authentication algorithm utilizes national algorithm standards SM2.

[0044] Emergency response tasks are generated by the emergency response business control function of the emergency response terminal management subsystem. The business is mainly divided into warning release tasks and receipt tasks.

[0045] When an early warning is issued, the task management module generates the broadcast content and broadcast objects through the early warning content management module and the task object management module respectively according to the disaster information that should be input. The task scheduling management module matches the communication method according to the communication status of the emergency response terminal and the pre-made strategy. After the early warning task information is generated, it is reviewed by relevant staff. When the review timeouts, the platform automatically triggers the "Disaster Emergency Rescue Assistance" SMS and outbound call to remind staff to review and process it. The early warning information is sent to the Ministry's "Disaster Emergency Rescue Assistance" platform, which implements text broadcast + real-time voice broadcast based on the satellite network; or to the Beidou service platform, which sends the corresponding information to the emergency response terminal via the Beidou satellite. Finally, the emergency response terminal converts the Beidou text warning information into a voice message and plays it to remind the people and relevant personnel related to the disaster; the emergency response terminal's receipt of task execution is transmitted back to the business control platform via the Ministry's "Disaster Emergency Rescue Assistance" platform communication satellite network.

[0046] This emergency response terminal system, equipped with image data transmission capabilities, utilizes a multi-link redundancy design using satellite, Beidou, and 4 / 5G networks to ensure the delivery of warning information in the event of network, power, and power outages. This addresses the communication failure issues inherent in traditional systems, enabling low-latency, wide-coverage transmission of warning information. It also utilizes encrypted image transmission to provide the command center with real-time disaster information, enhancing the accuracy of rescue decisions and supporting decision-making. Furthermore, this system provides 24 / 7 equipment status monitoring and remote maintenance, reducing manual inspection costs and improving troubleshooting efficiency. Furthermore, its IP66 protective housing and lightweight structure enable rapid deployment in complex terrain, reducing construction costs. Its combination of solar power and high-capacity batteries ensures continuous operation in off-grid environments, reducing power consumption in sleep mode. Furthermore, this system employs a security system with full-link encryption from identity authentication to data transmission to protect against network attacks and information tampering. It supports voice, text, and multilingual broadcasting, with a coverage radius of up to 500 meters, ensuring full coverage in high-risk areas.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency response terminal system with image data return capability, comprising an emergency response terminal management subsystem, an emergency response terminal, a multimodal communication network, an image data return channel, and a device status monitoring system, characterized by: The emergency response terminal management subsystem is deployed on the emergency management platform and is used to generate and review warning tasks, dynamically select communication links, interact with terminals via satellite networks, and receive on-site images and equipment status data transmitted back by the terminals. The emergency response terminal is deployed in high-risk disaster areas and integrates a satellite communication module, a Beidou short message module, a 4 / 5G communication module, an image acquisition module, a voice broadcast module, an equipment status monitoring module, and a power management module. The multimodal communication network supports physically isolated links of Ku-band satellites, Beidou satellites and operator networks, and automatically switches communication modes according to preset strategies; the image data return channel transmits on-site images to the emergency response terminal management subsystem in real time through encrypted transmission via the satellite network; the equipment status monitoring system is used to collect terminal operating parameters in real time and transmit them back via satellite, supporting remote diagnosis and maintenance.

2. The emergency call response terminal system with image data return capability according to claim 1, characterized in that: The satellite communication module includes a Ku-band satellite transceiver unit, a Beidou short message receiving unit, and a multi-link switching controller. The Ku-band satellite transceiver unit is used to receive real-time voice warning information and text instructions from the emergency call terminal management subsystem, and transmit task execution receipts through the satellite network; the Beidou short message receiving unit is used to parse the text warning information sent by the Beidou satellite and trigger the voice broadcast module to play; the multi-link switching controller automatically switches the optimal communication link according to signal strength, task priority and energy consumption.

3. The emergency call terminal system with image data return capability according to claim 2, characterized in that: The image acquisition module includes a wide-angle high-definition camera, an image preprocessing unit and an encryption transmission unit. The wide-angle high-definition camera is used to acquire images in an environment of -40°C to 70°C; the image preprocessing unit uses H.265 encoding to compress data and add timestamps and geographic location tags; the encryption transmission unit encrypts the image data based on the SM4 algorithm and transmits it back via a satellite network.

4. The emergency response terminal system with image data return capability according to claim 3, characterized in that: The device status monitoring module includes a multi-parameter sensor group, a self-test and alarm unit, and a remote firmware upgrade interface. The multi-parameter sensor group is used to monitor the terminal's battery voltage, signal strength, ambient temperature and humidity, and casing integrity; the self-test and alarm unit is used to automatically switch to a backup link and send a fault code to the emergency call terminal management subsystem when an equipment abnormality is detected; the remote firmware upgrade interface is used to update the terminal software via a satellite network.

5. The emergency call response terminal system with image data return capability according to claim 4, characterized in that: The power management module includes a foldable solar panel, a lithium iron phosphate battery pack and an intelligent power consumption controller, and the intelligent power consumption controller supports remote wake-up and task-triggered wake-up.

6. The emergency call response terminal system with image data return capability according to claim 1, characterized in that: The switching strategy of the multimodal communication network is as follows: dynamic priority allocation, mandatory activation of satellite links for emergency tasks, and selection of the optimal link according to signal quality for routine tasks; energy consumption optimization mode, giving priority to Beidou short message communication when the battery is low.

7. The emergency call terminal system with image data return capability according to claim 2, characterized in that: The voice broadcast module includes a multi-source fusion unit, a directional sound wave transmitter and a multi-language switching function. The multi-source fusion unit is used for real-time voice, text-to-speech (TTS) and pre-recorded audio playback; The maximum sound pressure level of the directional sound wave transmitter is ≥120dB, and the effective coverage radius is ≥500 meters.

8. The emergency call terminal system with image data return capability according to claim 1, characterized in that: The shell of the emergency call response terminal adopts IP66 protection grade, is filled with shock-resistant buffer material, and is coated with anti-salt spray corrosion coating on the surface.

9. The emergency call terminal system with image data return capability according to claim 1, characterized in that: The emergency response terminal management subsystem includes a disaster scenario simulation engine, a three-dimensional geographic information interface and an automated review mechanism. The disaster scenario simulation engine is used to pre-generate warning templates and response strategies for various disasters; the three-dimensional geographic information interface is used to display the terminal location, image return screen and disaster area situation in real time; the automated review mechanism is used to automatically upgrade timed-out and unprocessed warning tasks to the upper-level platform.

10. The emergency call terminal system with image data return capability according to claim 9, characterized in that: The emergency call terminal management subsystem also includes a system security module, and the system security module includes a national secret algorithm hardware encryption chip, an anti-physical disassembly mechanism and a communication link two-way authentication unit. The national secret algorithm hardware encryption chip integrates SM2 identity authentication, SM3 message digest and SM4 data encryption functions; the anti-physical disassembly mechanism is used to automatically erase the key and send a positioning alarm after the disassembly is triggered; the communication link two-way authentication unit is used for two-way authentication to prevent illegal equipment from accessing.

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