Multifunctional civil air defense alarm emergency fusion terminal

Abstract

The invention discloses a multifunctional civil air defense alarm emergency fusion terminal which solves the problems that a traditional civil air defense alarm system is single in communication mode and prone to failure due to interference by integrating multiple communication modules such as Beidou, 4G / 5G, wired and satellite. The control circuit can analyze received multipath civil air defense alarm signals and output multipath control instructions to realize unified scheduling control of lower-level alarm equipment, so that the problem that the existing system is difficult to realize three-level linkage of province, city and county is solved; the control execution circuit supports seamless joint with third-party civil air defense equipment, has good compatibility, and effectively avoids system splitting and repeated construction; the alarm signal storage module can call audio, video and image information, so that extension from a single alarm sound source to multimedia content is realized, and the propagation effect and content expressive power of alarm information are improved; the analog-to-digital conversion output module supports intercommunication with a government emergency broadcast platform, so that alarm information can be synchronously pushed to a larger range.

Description

Technical Field

[0001] The present application relates to the field of civil air defense alarm technology, and in particular to a multifunctional civil air defense alarm emergency fusion terminal. Background Art

[0002] Currently, most regions in China still rely on civil air defense alarm systems based on ultra-short wave (UHF) communications. These systems, with their relatively simple control methods and signal transmission methods, are ill-suited to the demands of modern, high-intensity electromagnetic interference and complex urban environments. First, existing alarm systems suffer from widespread response lags and complex control authority hierarchies, making them unable to meet the timeliness requirements for alarm issuance under the threat of hypersonic weapons. Second, because alarm signals are transmitted electrically or electroacously via UHF, they have weak penetration and poor anti-interference capabilities. Furthermore, dense urban areas with high-rise buildings and severe background noise further impair the effective transmission of audible alarms. Third, traditional systems rely solely on outdoor sirens for a single audio signal, failing to cover enclosed areas such as large shopping malls, underground spaces, and high-rise office buildings, creating alarm blind spots. Furthermore, existing alarm systems often lack the ability to connect with multimedia channels such as government emergency broadcast platforms, making it difficult to achieve coordinated broadcasting across multiple platforms and scenarios.

[0003] Therefore, in the construction of civil air defense alarm systems, how to effectively deal with the untimely response in actual combat, insufficient signal anti-interference ability and limited transmission coverage has become an urgent problem to be solved. Summary of the Invention

[0004] To this end, the present application provides a multifunctional civil air defense alarm emergency fusion terminal to solve the problems existing in the existing technology of how to effectively deal with the untimely response to actual combat, insufficient signal anti-interference ability and limited transmission coverage.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A multifunctional civil air defense alarm emergency fusion terminal, characterized in that the terminal includes a transmission channel, a control circuit, a control execution circuit, an alarm signal storage module, an analog-to-digital conversion output module and an emergency fusion output circuit;

[0007] The transmission channel includes part or all of the Beidou communication module, 4G communication module, 5G communication module, wired communication module, ultra-short wave communication module, Tiantong satellite communication module and Starlink satellite communication module; the transmission channel is used to receive civil air defense alarm signals;

[0008] The input end of the control circuit is electrically connected to the output end of the transmission channel, and the control circuit is used to identify and analyze the civil air defense alarm signal and output multiple control command signals;

[0009] The input end of the control execution circuit is electrically connected to the output end of the control circuit, and the control execution circuit is used to receive the control instruction signal and drive the third-party civil air defense alarm device to perform corresponding actions based on the control instruction signal;

[0010] The input end of the alarm signal storage module is electrically connected to the output end of the control circuit, and the alarm signal storage module is used to store and call the civil air defense alarm audio, video and image files corresponding to the control command signal;

[0011] The input end of the analog-to-digital conversion output module is electrically connected to the output end of the control circuit, and the analog-to-digital conversion output module is used to convert the civil air defense alarm signal or its corresponding audio signal into a digital signal compatible with the government emergency broadcast platform;

[0012] The input end of the emergency fusion output circuit is electrically connected to the output end of the control circuit, and is used to interrupt the third-party signal playback path when an emergency control signal is received, and forcibly switch to the civil air defense alarm audio signal output.

[0013] In the above scheme, optionally, the communication module in the transmission channel adopts a modular plug-in structure, supporting hot plugging and free combination configuration of the Beidou communication module, the 4G communication module, the 5G communication module, the wired communication module, the ultra-short wave communication module, the Tiantong satellite communication module, and the Starlink satellite communication module.

[0014] In the above solution, optionally, the control circuit includes a first chip JP1, and the first chip JP1 is a PIC16F chip.

[0015] In the above solution, optionally, the transmission channel includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, and a twenty-third resistor R23;

[0016] A first end of the eighteenth resistor R18 is connected to the pin 22 of the first chip JP1, and a second end of the eighteenth resistor R18 is divided into two paths, one path is connected to one end of the twenty-first resistor R21, and the other path is the receiving end RXD of the transmission channel;

[0017] A first end of the nineteenth resistor R19 is connected to the 26th pin of the first chip JP1, and a second end of the nineteenth resistor R19 is divided into two paths, one path is connected to one end of the twenty-second resistor R22, and the other path is the transmitting end TXD of the transmission channel;

[0018] A first end of the 20th resistor R20 is connected to the 28th pin of the first chip JP1, and a second end of the 20th resistor R20 is connected to one end of the 23rd resistor R23;

[0019] The other end of the twenty-first resistor R21 , the other end of the twenty-second resistor R22 , and the other end of the twenty-third resistor R23 are all grounded.

[0020] In the above solution, optionally, the output end of the control circuit is connected to the input end of the control execution circuit through a control signal output module;

[0021] The control signal output module includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4;

[0022] One end of the first resistor R1 is connected to the third pin of the first chip JP1, one end of the second resistor R2 is connected to the fifth pin of the first chip JP1, one end of the third resistor R3 is connected to the seventh pin of the first chip JP1, and one end of the fourth resistor R4 is connected to the ninth pin of the first chip JP1;

[0023] The other end of the first resistor R1 , the other end of the second resistor R2 , the other end of the third resistor R3 , and the other end of the fourth resistor R4 are respectively connected to the input end of the control execution circuit.

[0024] In the above solution, optionally, the output end of the control execution circuit includes a standard COM interface and an RJ45 interface, and the control execution circuit is used to establish a communication connection with a third-party civil air defense alarm control central station to achieve remote triggering and control.

[0025] In the above solution, optionally, the alarm signal storage module includes an MCU audio and video processing unit, a TF card and a second chip JP2, and the second chip JP2 is an STM32F103 chip;

[0026] The TF card is pre-stored with audio, voice, video and image files. The MCU audio and video processing unit and the TF card are respectively connected to the second chip JP2. The second chip is used to retrieve the corresponding signal for playback according to the control command signal.

[0027] In the above solution, optionally, the analog-to-digital conversion output module includes a MUX signal selector, a PGA signal gain controller, a 24-bit analog-to-digital converter, a microprocessor and an RS-232 serial port interface.

[0028] In the above solution, optionally, one output of the analog-to-digital conversion output module is connected to a civil air defense alarm terminal, and the other output is connected to a government emergency broadcasting platform.

[0029] In the above solution, optionally, the emergency fusion output circuit includes a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4, and a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4 connected in parallel with the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 respectively;

[0030] The first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are respectively used to control the switching of the voice signal path; the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are used to prevent reverse current;

[0031] The emergency fusion output circuit further includes a first transistor Q1, a second transistor Q2, a third transistor Q3 and a fourth transistor Q4, as well as a forty-sixth resistor R46, a forty-seventh resistor R47, a forty-eighth resistor R48 and a forty-ninth resistor R49;

[0032] The forty-sixth resistor R46, the forty-seventh resistor R47, the forty-eighth resistor R48, and the forty-ninth resistor R49 are respectively connected to the bases of the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4; the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4 are used to control the switching of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4, respectively;

[0033] Among them, the input ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are respectively connected to the output end of the third-party voice signal and the output end of the civil defense alarm voice signal, and the output ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are connected to the fusion output port, which is used to selectively output different voice signals to the broadcasting system.

[0034] Compared with the prior art, this application has at least the following beneficial effects:

[0035] The present invention provides a multifunctional civil air defense alarm emergency fusion terminal, which solves the problem of single communication mode and easy failure due to interference of traditional civil air defense alarm system by integrating multiple communication modules such as Beidou, 4G / 5G, wired, and satellite; its control circuit can parse the received multi-channel civil air defense alarm signals and output multi-channel control instructions, so as to realize unified dispatching and control of lower-level alarm equipment, thereby solving the problem that the existing system is difficult to achieve provincial, municipal and county linkage; the control execution circuit supports seamless connection with third-party civil air defense equipment, has good compatibility, and effectively avoids system fragmentation and duplication; the alarm signal storage module can call audio, video and image information, realize the expansion from a single alarm sound source to multimedia content, and improve the dissemination effect and content of the alarm information. The analog-to-digital conversion output module supports intercommunication with the government emergency broadcast platform, so that the alarm information can be pushed to a wider range simultaneously; the emergency fusion output circuit has a wartime forced insertion function. Under normal conditions, the emergency fusion output circuit is in a normally closed state, and the third-party voice signal is directly output to the broadcast system through the emergency fusion output circuit; in emergency situations, the emergency fusion output circuit disconnects the third-party voice signal path and forcibly inserts the civil air defense alarm voice signal into the broadcast system for output, without relying on the consent or operation of the third-party control platform, so as to ensure the priority release of the alarm signal in an emergency, comprehensively improve the system's anti-interference ability, control efficiency and actual combat adaptability, and effectively solve the core problems of the existing alarm system such as delayed response, insufficient coverage, and single function. This terminal can also issue various alarm signals through manual control for easy emergency use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more intuitively illustrate the prior art and the present application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be considered as limiting conditions for implementing the present application; for example, based on the technical concepts disclosed in the present application and the exemplary drawings, those skilled in the art are capable of easily making routine adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components).

[0037] Figure 1 A circuit principle block diagram of a multifunctional civil air defense alarm emergency fusion terminal provided in an embodiment of the present application;

[0038] Figure 2 This is a circuit schematic diagram of the transmission channel, control circuit, alarm signal storage module and control signal output module in the embodiment of the present application;

[0039] Figure 3 This is a circuit schematic diagram of a control execution circuit in an embodiment of the present application;

[0040] Figure 4This is a circuit diagram of the analog-to-digital conversion output module in an embodiment of the present application;

[0041] Figure 5 This is a circuit schematic diagram of the emergency fusion output circuit in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The present application will be further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0043] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0044] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the convenience of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0045] In one embodiment, Figure 1 As shown, a multifunctional civil air defense alarm emergency fusion terminal is provided, characterized in that the terminal includes a transmission channel, a control circuit, a control execution circuit, an alarm signal storage module, an analog-to-digital conversion output module and an emergency fusion output circuit;

[0046] The transmission channel includes part or all of the Beidou communication module, 4G communication module, 5G communication module, wired communication module, ultra-short wave communication module, Tiantong satellite communication module and Starlink satellite communication module; the transmission channel is used to receive civil air defense alarm signals;

[0047] The input end of the control circuit is electrically connected to the output end of the transmission channel, and the control circuit is used to identify and analyze the civil air defense alarm signal and output multiple control command signals;

[0048] The input end of the control execution circuit is electrically connected to the output end of the control circuit, and the control execution circuit is used to receive the control instruction signal and drive the third-party civil air defense alarm device to perform corresponding actions based on the control instruction signal;

[0049] The input end of the alarm signal storage module is electrically connected to the output end of the control circuit, and the alarm signal storage module is used to store and call the civil air defense alarm audio, video and image files corresponding to the control command signal;

[0050] The input end of the analog-to-digital conversion output module is electrically connected to the output end of the control circuit, and the analog-to-digital conversion output module is used to convert the civil air defense alarm signal or its corresponding audio signal into a digital signal compatible with the government emergency broadcast platform;

[0051] The input end of the emergency fusion output circuit is electrically connected to the output end of the control circuit, and is used to interrupt the third-party signal playback path when an emergency control signal is received, and forcibly switch to the civil air defense alarm audio signal output.

[0052] In this embodiment, the communication module in the transmission channel adopts a modular plug-in structure, which supports hot plugging and free combination configuration of the Beidou communication module, the 4G communication module, the 5G communication module, the wired communication module, the ultra-short wave communication module, the Tiantong satellite communication module, and the Starlink satellite communication module.

[0053] In this embodiment, the control circuit includes a first chip JP1 , which is a PIC16F chip.

[0054] In this embodiment, the transmission channel includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22 and a twenty-third resistor R23;

[0055] A first end of the eighteenth resistor R18 is connected to the pin 22 of the first chip JP1, and a second end of the eighteenth resistor R18 is divided into two paths, one path is connected to one end of the twenty-first resistor R21, and the other path is the receiving end RXD of the transmission channel;

[0056] A first end of the nineteenth resistor R19 is connected to the 26th pin of the first chip JP1, and a second end of the nineteenth resistor R19 is divided into two paths, one path is connected to one end of the twenty-second resistor R22, and the other path is the transmitting end TXD of the transmission channel;

[0057] A first end of the 20th resistor R20 is connected to the 28th pin of the first chip JP1, and a second end of the 20th resistor R20 is connected to one end of the 23rd resistor R23;

[0058] The other end of the twenty-first resistor R21 , the other end of the twenty-second resistor R22 , and the other end of the twenty-third resistor R23 are all grounded.

[0059] In this embodiment, the output end of the control circuit is connected to the input end of the control execution circuit through a control signal output module;

[0060] The control signal output module includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4;

[0061] One end of the first resistor R1 is connected to the third pin of the first chip JP1, one end of the second resistor R2 is connected to the fifth pin of the first chip JP1, one end of the third resistor R3 is connected to the seventh pin of the first chip JP1, and one end of the fourth resistor R4 is connected to the ninth pin of the first chip JP1;

[0062] The other end of the first resistor R1 , the other end of the second resistor R2 , the other end of the third resistor R3 , and the other end of the fourth resistor R4 are respectively connected to the input end of the control execution circuit.

[0063] In this embodiment, the output end of the control execution circuit includes a standard COM interface and an RJ45 interface. The control execution circuit is used to establish a communication connection with a third-party civil air defense alarm control central station to achieve remote triggering and control.

[0064] In this embodiment, the alarm signal storage module includes an MCU audio and video processing unit, a TF card and a second chip JP2, and the second chip JP2 is an STM32F103 chip;

[0065] The TF card is pre-stored with audio, voice, video and image files. The MCU audio and video processing unit and the TF card are respectively connected to the second chip JP2. The second chip is used to retrieve the corresponding signal for playback according to the control command signal.

[0066] In this embodiment, the analog-to-digital conversion output module includes a MUX signal selector, a PGA signal gain controller, a 24-bit analog-to-digital converter, a microprocessor, and an RS-232 serial port interface.

[0067] In this embodiment, one output of the analog-to-digital conversion output module is connected to the civil air defense alarm terminal, and the other output is connected to the government emergency broadcast platform.

[0068] In this embodiment, the emergency fusion output circuit includes a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4, and a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4 connected in parallel with the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 respectively;

[0069] The first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are respectively used to control the switching of the voice signal path; the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are used to prevent reverse current;

[0070] The emergency fusion output circuit further includes a first transistor Q1, a second transistor Q2, a third transistor Q3 and a fourth transistor Q4, as well as a forty-sixth resistor R46, a forty-seventh resistor R47, a forty-eighth resistor R48 and a forty-ninth resistor R49;

[0071] The forty-sixth resistor R46, the forty-seventh resistor R47, the forty-eighth resistor R48, and the forty-ninth resistor R49 are respectively connected to the bases of the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4; the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4 are used to control the switching of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4, respectively;

[0072] Among them, the input ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are respectively connected to the output end of the third-party voice signal and the output end of the civil defense alarm voice signal, and the output ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are connected to the fusion output port, which is used to selectively output different voice signals to the broadcasting system.

[0073] Among them, under normal conditions, the emergency fusion output circuit is in a normally closed state, and the third-party voice signal is directly output to the broadcasting system through the emergency fusion output circuit; in an emergency situation, the first transistor Q1, the second transistor Q2, the third transistor Q3 and the fourth transistor Q4 receive a control signal and turn on, driving the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 to switch, disconnecting the third-party voice signal path, and forcibly inserting the civil air defense alarm voice signal into the broadcasting system for output, without relying on the consent or operation of the third-party control platform.

[0074] This embodiment provides a multifunctional civil air defense alarm emergency convergence terminal designed to address key issues with existing alarm systems, including single communication methods, slow response, poor anti-interference capabilities, numerous coverage blind spots, lack of unified control, and a single information dissemination method. This terminal integrates a multimode communication module, a multi-channel control signal management unit, an audio and video content management module, an analog-to-digital signal conversion module, and a forced insertion control circuit. This terminal enables multi-channel reception, multi-mode processing, multi-platform output, and wartime emergency forced insertion control of civil air defense alarms.

[0075] In terms of specific structure, the terminal includes six core functional modules: transmission channel, control circuit, control execution circuit, alarm signal storage module, analog-to-digital conversion output module and emergency fusion output circuit.

[0076] First, regarding the transmission channel, this terminal integrates a Beidou communication module, 4G and 5G communication modules, a wired communication module, an ultra-short wave communication module, a Tiantong satellite module, and a Starlink satellite module. Its modular design allows for the activation of some or all communication paths as needed, depending on the scenario. These communication modules connect to the terminal's internal control circuitry via a unified interface, enabling redundant reception and highly reliable transmission of civil air defense alarm control signals. This design transcends the limitations of traditional systems that rely solely on ultra-short wave communication, significantly improving their anti-destruction, anti-interference, and remote dispatch capabilities. It is particularly well-suited for emergency communication needs in modern environments with strong electromagnetic interference, densely populated high-rise buildings, or in sudden disaster scenarios.

[0077] The control circuit utilizes a dedicated communication chip (such as JP1) combined with a series resistor network to automatically identify input signals from the transmission channel, analyze the protocol, and perform logical distribution. This circuit breaks down the received signals into multiple control commands, which are then sent via multiple output pins to the control execution circuit, alarm signal storage module, analog-to-digital conversion module, and emergency interrogation module. This enables unified dispatch and multi-target parallel processing, addressing the existing system's inability to achieve unified command across provinces, cities, and counties, and its decentralized and lagging control.

[0078] In the control execution circuitry, this terminal uses four transistor-driven relay circuits to convert received control commands into current control signals, driving external civil air defense alarm devices to turn on, switch on, or off. The control output supports standard COM and RJ45 interfaces, making it compatible with most existing third-party civil air defense alarm central control systems. This facilitates seamless integration and remote dispatch control, avoiding duplication of investment and improving overall system scalability and cost-effectiveness.

[0079] As for the alarm signal storage module, this terminal is equipped with a TF card memory. This second chip (e.g., JP2) works in conjunction with the MCU's audio and video processing unit to store multimedia resources such as alarm audio files, voice prompts, video images, and warning images. When the control circuit issues a playback command, the MCU automatically retrieves and processes the relevant resources, outputting them to a speaker or display terminal via an audio amplification or video decoding interface. This design changes the traditional system's single-beep signal playback model and supports the simultaneous playback of promotional, educational, and instructional content, significantly improving the dissemination efficiency and information-carrying capacity of civil air defense alarms.

[0080] In the analog-to-digital conversion output module, the terminal integrates a MUX signal selector, PGA gain controller, 24-bit A / D converter, and RS-232 serial port. This allows the analog audio signals from the storage module to be digitally converted and output to the government emergency broadcast platform. It can also reversely convert digital signals into analog signals, achieving compatibility with the existing analog broadcast system. This structure enables the civil air defense system to fully connect to the national emergency broadcast platform, integrating the broadcast system with the alarm system. Finally, in the emergency fusion output circuit, multiple sets of relays and protective resistors form a normally closed channel and an emergency switching circuit. When a wartime or emergency trigger signal is detected, the system automatically interrupts the original third-party audio signal path and forcibly switches to the civil air defense alarm audio path, achieving "forced broadcast" control and ensuring priority transmission of alarm information at critical moments. This mechanism greatly enhances the civil air defense system's emergency response capabilities and wartime support capabilities.

[0081] In summary, the multifunctional civil air defense alarm emergency fusion terminal of this embodiment significantly improves the multi-channel receiving capability of alarm information, the response speed of control instructions, the accuracy of control execution, the dissemination capability of multimedia resources, the system's external compatibility, and the active broadcasting capability in wartime emergency scenarios through systematic module design. It can effectively solve the problems of traditional civil air defense alarm systems such as single communication mode, slow control chain, multiple coverage blind spots, and limited sound alarm propagation, and has broad prospects for promotion and application.

[0082] In one embodiment, in order to address the problems of the existing civil air defense alarm system being unable to issue alarm signals in a timely and multi-channel manner due to the limitations of communication means, the signal coverage range is small, and unified control by provinces, cities, and counties cannot be achieved, this embodiment uses the latest Beidou technology and network technology to completely solve the problem of the inability of civil air defense alarms to achieve unified control, and better solves the problems of low sound coverage, poor anti-interference ability, and weak actual combat capability of civil air defense alarms. The system can also seamlessly connect to existing civil air defense alarm control equipment through a third-party interface on the terminal to achieve synchronous control and issuance of civil air defense alarms. It can also use Beidou's short messages to send information, play voice through the system, etc. In wartime, civil air defense alarms and information can be issued through Beidou satellites, and in peacetime, civil air defense propaganda and civil air defense emergency support work can be carried out through the system.

[0083] This embodiment is a full-function civil air defense alarm emergency fusion terminal, which mainly includes: transmission channel, control circuit, control execution circuit, alarm signal storage module, analog-to-digital conversion output module and transparent transmission output, such as Figure 2 、 Figure 3 and Figure 4 As shown. Emergency fusion output circuit is as follows Figure 5 Among them, the transmission channels mainly provide multiple communication channels for the transmission and control of civil air defense alarm signals through Beidou, 4G, 5G communication modules, wired communication modules, shortwave (ultra-shortwave) modules, Tiantong satellite modules and Starlink satellite modules.

[0084] The control circuit primarily converts the civil air defense alarm signal transmitted via the transmission channel into a control signal, which is then output to the control execution circuit and alarm signal storage module. This circuit includes chip JP1, resistors R18, R19, R20, R21, R22, and R23, and pins 22, 24, and 26 of JP1. The channel's signal is connected to JP1 via RXT and TXD. After identification and processing by JP1, the corresponding control signal is output from pin 2 to the audio and video processing circuit. The corresponding control signal is then output from pins 3, 5, 7, and 9, via R1, R2, R3, and R4, to pins Y, K, J, and Z of the control execution circuit.

[0085] The alarm signal storage module consists of chips JP1 and JP2, resistors R15, R24, R25, R26, R27, R28, R29, and R35, capacitors C4, C6, C7, C8, C9, C10, C11, and C12, a TF memory card, and an MCU audio and video circuit. Based on control instructions, the audio and video signals stored on the TF card are amplified and processed by the MCU for output. The audio signal can be an alarm signal or voice message, serving as a platform for government emergency broadcasts or as an audio input for alarms. The video signal and images can be used for civil air defense alarm promotions on television or as outdoor multimedia alarms. Audio, video, and image content can be updated online and offline.

[0086] like Figure 3 As shown, the control execution circuit includes transistors Q5, Q6, Q7, and Q8; diodes D5, D6, D7, and D8; relays K5, K6, K7, and K8; and resistors R50, R51, R52, and R53. These four relays execute corresponding control actions based on control commands input from the controller. These commands are then output to a third-party civil air defense alarm central control station via a control interface, controlling the sounding of the existing civil air defense alarm. The control circuit may also enable remote data transmission and control via a COM port and an AJ45 interface.

[0087] like Figure 5 As shown, the analog-to-digital conversion circuit includes a MUX (signal selection), a PGA (signal gain control), a 24-bit A / D converter, a microprocessor serial port, and an RS-232 serial port. Taking into account the needs of third-party users, in order to seamlessly access the government emergency broadcasting platform, the invention adds an analog-to-digital conversion circuit, which outputs the civil air defense alarm signal (analog or digital) to the civil air defense alarm terminal to issue a civil air defense alarm, and converts the alarm audio signal or analog signal into a digital signal and outputs it to the government emergency broadcasting platform, where the civil air defense alarm signal and signal are issued. The transmission channel can also directly transmit the control signal for use by third-party equipment.

[0088] The emergency fusion output (with forced insertion function) circuit includes Q1, Q2, Q3, Q4, D1, D2, D3, D4, K1, K2, K3, K4, and resistors R46, R47, R48, and R49. The civil air defense alarm (line voice) signal is connected to the third-party signal access line through this circuit. Normally, the third-party signal remains in a normally closed state. When needed (in wartime or emergency), the present invention can force the civil air defense alarm signal (voice signal) to be inserted into the signal playback system for playback without the control of a third party (government emergency broadcast platform). The civil air defense alarm signal is distributed through multiple platforms, which greatly improves the sound coverage of the civil air defense alarm.

[0089] like Figure 1As shown, the transmission channels primarily utilize existing Beidou satellites, 4G and 5G communications, wired communications, ultra-shortwave (VHF) communications, Tiantong satellite communications, and future Starlink communications technologies as information transmission channels for the multifunctional civil air defense alarm emergency fusion terminal. The modular structure allows for the combination or individual use of multiple channels, depending on the application scenario. This changes the existing VHF transmission mode of alarm signals, improving its applicability for emergency response.

[0090] The control circuit 7 uses mature single-chip microcomputer technology to decrypt and analyze the control instructions transmitted through the channel and output the corresponding control instructions. One output is to control the original civil air defense alarm control central station to control the issuance of civil air defense alarm signals. Another output is to the alarm signal storage and processing module, which outputs the corresponding audio and video signals.

[0091] The control execution circuit 8 is a circuit product designed and developed independently based on the functional characteristics of the alarm control central station currently used by the civil air defense department. It controls third-party equipment through cable connections.

[0092] The alarm signal storage module 9 stores audio, video, and image information. It retrieves information stored on the TF card according to control circuitry, processes it, and outputs the corresponding audio and video signals after processing by the NCU. This model replaces the traditional single civil air defense alarm signal mode with a multi-signal distribution model, broadening the sound sources and enriching the content of civil air defense alarms, meeting the current demand for multimedia and multi-platform civil air defense alarm distribution.

[0093] The analog-to-digital conversion output module 10 is based on the current status of digital signal usage by the existing government emergency broadcasting platform. It uses mature A / D conversion technology to convert the civil air defense alarm signal into digital and analog form, and seamlessly connects it to the government emergency broadcasting platform for emergency broadcasting.

[0094] This embodiment of the multifunctional civil air defense alarm emergency convergence terminal utilizes modern technology to upgrade existing civil air defense alarm equipment. It meets the needs of multi-channel and multi-platform civil air defense alarm distribution, adapting to both peacetime and wartime emergency response. Seamless access to the government emergency broadcast platform significantly improves the acoustic coverage of civil air defense alarms. By controlling third-party devices, it fully utilizes existing civil air defense alarm system equipment, achieving the integration and utilization of existing resources without requiring investment or equipment modification.

[0095] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A multifunctional civil air defense alarm emergency fusion terminal, characterized in that: The terminal includes a transmission channel, a control circuit, a control execution circuit, an alarm signal storage module, an analog-to-digital conversion output module and an emergency fusion output circuit; The transmission channel includes part or all of the Beidou communication module, 4G communication module, 5G communication module, wired communication module, ultra-short wave communication module, Tiantong satellite communication module and Starlink satellite communication module; the transmission channel is used to receive civil air defense alarm signals; The input end of the control circuit is electrically connected to the output end of the transmission channel, and the control circuit is used to identify and analyze the civil air defense alarm signal and output multiple control command signals; The input end of the control execution circuit is electrically connected to the output end of the control circuit, and the control execution circuit is used to receive the control instruction signal and drive the third-party civil air defense alarm device to perform corresponding actions based on the control instruction signal; The input end of the alarm signal storage module is electrically connected to the output end of the control circuit, and the alarm signal storage module is used to store and call the civil air defense alarm audio, video and image files corresponding to the control command signal; The input end of the analog-to-digital conversion output module is electrically connected to the output end of the control circuit, and the analog-to-digital conversion output module is used to convert the civil air defense alarm signal or its corresponding audio signal into a digital signal compatible with the government emergency broadcast platform; The input end of the emergency fusion output circuit is electrically connected to the output end of the control circuit, and is used to interrupt the third-party signal playback path when an emergency control signal is received, and forcibly switch to the civil air defense alarm audio signal output.

2. A multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: The communication module in the transmission channel adopts a modular plug-in structure, supporting hot plugging and free combination configuration of the Beidou communication module, the 4G communication module, the 5G communication module, the wired communication module, the ultra-short wave communication module, the Tiantong satellite communication module, and the Starlink satellite communication module.

3. The multifunctional civil air defense alarm emergency fusion terminal according to claim 2, characterized in that: The control circuit includes a first chip JP1, and the first chip JP1 is a PIC16F chip.

4. The multifunctional civil air defense alarm emergency fusion terminal according to claim 3, characterized in that: The transmission channel includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22 and a twenty-third resistor R23; A first end of the eighteenth resistor R18 is connected to the pin 22 of the first chip JP1, and a second end of the eighteenth resistor R18 is divided into two paths, one path is connected to one end of the twenty-first resistor R21, and the other path is the receiving end RXD of the transmission channel; A first end of the nineteenth resistor R19 is connected to the 26th pin of the first chip JP1, and a second end of the nineteenth resistor R19 is divided into two paths, one path is connected to one end of the twenty-second resistor R22, and the other path is the transmitting end TXD of the transmission channel; A first end of the 20th resistor R20 is connected to the 28th pin of the first chip JP1, and a second end of the 20th resistor R20 is connected to one end of the 23rd resistor R23; The other end of the twenty-first resistor R21 , the other end of the twenty-second resistor R22 , and the other end of the twenty-third resistor R23 are all grounded.

5. The multifunctional civil air defense alarm emergency fusion terminal according to claim 3, characterized in that: The output end of the control circuit is connected to the input end of the control execution circuit through a control signal output module; The control signal output module includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; One end of the first resistor R1 is connected to the third pin of the first chip JP1, one end of the second resistor R2 is connected to the fifth pin of the first chip JP1, one end of the third resistor R3 is connected to the seventh pin of the first chip JP1, and one end of the fourth resistor R4 is connected to the ninth pin of the first chip JP1; The other end of the first resistor R1 , the other end of the second resistor R2 , the other end of the third resistor R3 , and the other end of the fourth resistor R4 are respectively connected to the input end of the control execution circuit.

6. The multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: The output end of the control execution circuit includes a standard COM interface and an RJ45 interface. The control execution circuit is used to establish a communication connection with a third-party civil air defense alarm control central station to achieve remote triggering and control.

7. The multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: The alarm signal storage module includes an MCU audio and video processing unit, a TF card and a second chip JP2, and the second chip JP2 is an STM32F103 chip; The TF card is pre-stored with audio, voice, video and image files. The MCU audio and video processing unit and the TF card are respectively connected to the second chip JP2. The second chip is used to retrieve the corresponding signal for playback according to the control command signal.

8. The multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: The analog-to-digital conversion output module includes a MUX signal selector, a PGA signal gain controller, a 24-bit analog-to-digital converter, a microprocessor and an RS-232 serial port interface.

9. The multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: One output of the analog-to-digital conversion output module is connected to the civil air defense alarm terminal, and the other output is connected to the government emergency broadcast platform.

10. The multifunctional civil air defense alarm emergency fusion terminal according to claim 1, characterized in that: The emergency fusion output circuit includes a first relay K1, a second relay K2, a third relay K3 and a fourth relay K4, and a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4 connected in parallel with the first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 respectively; The first relay K1, the second relay K2, the third relay K3 and the fourth relay K4 are respectively used to control the switching of the voice signal path; the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are used to prevent reverse current; The emergency fusion output circuit further includes a first transistor Q1, a second transistor Q2, a third transistor Q3 and a fourth transistor Q4, as well as a forty-sixth resistor R46, a forty-seventh resistor R47, a forty-eighth resistor R48 and a forty-ninth resistor R49; The forty-sixth resistor R46, the forty-seventh resistor R47, the forty-eighth resistor R48, and the forty-ninth resistor R49 are respectively connected to the bases of the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4; the first transistor Q1, the second transistor Q2, the third transistor Q3, and the fourth transistor Q4 are used to control the switching of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4, respectively; Among them, the input ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are respectively connected to the output end of the third-party voice signal and the output end of the civil defense alarm voice signal, and the output ends of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are connected to the fusion output port, which is used to selectively output different voice signals to the broadcasting system.

Images