Emergency communication device

Abstract

The utility model relates to the technical field of information communication, and discloses an emergency communication device comprising a processor module; the wireless communication module is connected with the processor module through an SPI (Serial Peripheral Interface) bus; the transmitting module is electrically connected with the processor module through an I2C bus; the mediation module is electrically connected with the processor module through an I2C bus; and the display module is electrically connected with the processor module through an I2C bus. The emergency communication device solves the problems that in the prior art, signals of the emergency communication device are seriously influenced in mountain forests or severe weather, when a resident residence place is far away from an FM broadcast transmitting station, the signals are blocked easily, and when natural disasters occur, alarm signals cannot be received and cannot be avoided in time, so that the occurrence of the natural disasters is influenced. And serious personnel and property loss is caused.

Description

Technical Field

[0001] This utility model relates to the field of information and communication technology, specifically to an emergency communication device. Background Technology

[0002] Emergency communication devices are equipment that can conduct long-distance communication alarms in the event of sudden natural or man-made emergencies. Among them, FM radio, as a traditional signal transmission method, has the characteristics of wide coverage and low dependence on infrastructure. Therefore, FM radio plays an irreplaceable role in disaster early warning and emergency communication. Generally, in the event of a serious disaster, FM radio is used to transmit alarm signals to residents' emergency communication devices.

[0003] In mountainous and hilly areas, severe weather can easily trigger natural disasters such as floods and mudslides. With current technology, both forests and severe weather can seriously affect the signal of emergency communication devices. When residents live far from FM radio transmitters, the signal can be blocked. In the event of a natural disaster, they may not receive alarm signals and may not be able to take timely evasive action, resulting in significant loss of life and property. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides an emergency communication device that solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: an emergency communication device, comprising:

[0006] Processor module;

[0007] A wireless communication module, which is connected to the processor module via an SPI bus;

[0008] A transmitting module, which is electrically connected to the processor module via an I2C bus;

[0009] The mediation module is electrically connected to the processor module via an I2C bus.

[0010] The display module is electrically connected to the processor module via an I2C bus.

[0011] The adjustment module and the display module are electrically connected on the same I2C bus.

[0012] Preferably, the processor module is connected to a voice recognition module via an O / I interface, and the voice recognition module is connected to a microphone when powered on.

[0013] Preferably, the modulation module uses analog circuitry for radio frequency amplification and quadrature signal down-conversion processing, and a power supply chip circuit is electrically connected to the internal circuitry of the modulation module chip.

[0014] Preferably, the wireless communication module internally defines a Mesh self-organizing network protocol, the main structure of which consists of destination address, source address, payload size, and payload.

[0015] Mesh self-organizing network protocol signal reception includes the following steps:

[0016] (1) The new node is powered on and starts up, and periodically broadcasts routing information to neighboring nodes. When the neighbor receives the routing information, it executes step (2).

[0017] (2) Receive signal data, check the content of the signal data, determine the signal type and the source of transmission, and identify whether the signal data receiver is itself; if yes, proceed to step (3); if not, proceed to step (4).

[0018] (3) Retrieve the signal type; if it is routing information, add the routing information to its own routing table; if it is a data message, hand it over to the upper layer application;

[0019] (4) If the signal receiver can be found, forward the signal according to the routing table and the next hop address; if the signal receiver cannot be found, proceed to step (5).

[0020] (5) Delete signal data.

[0021] Preferably, in step (4), after forwarding the signal data, three waiting cycles are started. If there is no reply in each cycle, the signal data is forwarded repeatedly until a new signal is received, and then the signal data that has been waiting the longest is deleted.

[0022] After receiving the emergency voice message, the mediation module includes the following steps:

[0023] (1) Preprocess the received voice packet to restore the voice packet to the original audio signal, and then execute step (2).

[0024] (2) The processor module further digitizes the audio signal, converts the continuous audio signal into a discrete digital signal for transmission, and identifies the digital signal. After successful identification, step (3) is executed.

[0025] (3) The pulse code modulation technology built into the processor module converts the digital signal into a modulated signal suitable for transmission, and then sends out the signal command.

[0026] Preferably, in step (1), the mediation module has a built-in frequency discriminator. The voice packet detects the frequency change of the signal through the frequency discriminator and converts it into a corresponding voltage change to recover the original audio signal.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. This emergency communication device consists of a processor module, a wireless communication module, a transmitter module, a mediator module, and a display module, which are connected together to form a prototype device. The prototype devices are distributed among residents to form a decentralized communication network. As long as any prototype device receives an FM radio transmission signal, it can distribute the signal to all other villagers' online terminals through the transmitter module, achieving a point-to-point alarm effect. This reduces the signal blockage caused by the distance of the FM radio transmitter, thereby increasing the coverage of the alarm signal and enabling residents in remote areas to receive alarm signals in a timely manner to avoid disasters, thus reducing the loss of life and property in the event of a disaster.

[0029] 2. This emergency communication device defines a Mesh self-organizing network protocol and constructs a Mesh routing algorithm within the wireless communication module. It interconnects various nodes through the wireless communication module and then transmits information to other nodes in the network through multi-hop relay, forming a robust and widely covered Mesh network. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the hardware system structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the Mesh self-organizing network protocol structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the Mesh self-organizing network protocol process structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the emergency voice decoding process structure of this utility model;

[0034] Figure 5 This is a schematic diagram of the hardware circuit structure of the transmitting module of this utility model;

[0035] Figure 6 This is a schematic diagram of the hardware circuit structure of the processor module of this utility model;

[0036] Figure 7 This is a schematic diagram of the hardware circuit structure of the wireless communication module of this utility model;

[0037] Figure 8 This is a schematic diagram of the hardware circuit structure of the adjustment module of this utility model;

[0038] Figure 9 This is a schematic diagram of the hardware circuit structure of the display module of this utility model. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figure 1-9 An emergency communication device, comprising:

[0041] The processor module is mainly composed of the ESP32-S3 chip, and the hardware circuit design of the ESP32-S3 chip is as follows: Figure 6 As shown;

[0042] The wireless communication module is connected to the processor module via an SPI bus. The wireless communication module is primarily composed of the SX1262-LORA chip, and the hardware circuit design of the SX1262 chip is as follows: Figure 7 As shown;

[0043] The transmitting module is electrically connected to the processor module via an I2C bus. The transmitting module is primarily composed of a QN802FM chip, the hardware circuit design of which is as follows: Figure 5 As shown;

[0044] The mediation module is electrically connected to the processor module via an I2C bus. The mediation module is primarily composed of the RDA5807FM chip, and the hardware circuit design of the RDA5807FM chip is as follows: Figure 8 As shown;

[0045] The display module is electrically connected to the processor module via an I2C bus. The display module is primarily composed of the N096-2864 chip, the hardware circuit design of which is as follows: Figure 9 As shown;

[0046] The mediation module and the display module are electrically connected on the same I2C bus. After the mediation module receives a signal, it can directly decode and display the signal through the display module, so that the user can see the signal content intuitively.

[0047] The processor module is connected to a voice recognition module via an O / I interface. The voice recognition module is connected to a microphone when powered on, so that in case of an emergency, the user can directly issue a voice alarm through the microphone without typing, making it more convenient for visually impaired people, the elderly, and others to use.

[0048] The modulation module uses analog circuits for radio frequency amplification and quadrature signal down-conversion. The power supply chip circuit is connected to the internal circuit of the modulation module chip. The modulation module itself is further designed on a high-performance FM radio chip. The main function of the power supply chip circuit is to provide a stable power supply to ensure the normal operation of the modulation module and avoid the situation where alarm signals cannot be received.

[0049] like Figure 2 As shown, the wireless communication module internally defines a Mesh self-organizing network protocol. The main structure of the Mesh self-organizing network protocol consists of a destination address, a source address, a payload size, and a payload. The destination address, source address, payload size, and payload composition represent the destination, sending source, message size, and message payload of the LoRa Mesh packet, respectively. The message payload includes routing messages and data messages. A Mesh network is constructed based on the Mesh self-organizing network protocol. Routing messages are used to maintain the routing table of the Mesh network, and data messages are used to transmit application layer data.

[0050] like Figure 3 As shown, the Mesh self-organizing network protocol receives signals through the following steps:

[0051] (1) The new node is powered on and starts up, and periodically broadcasts routing information to neighboring nodes. When the neighbor receives the routing information, it executes step (2).

[0052] (2) Receive signal data, check the content of the signal data, determine the signal type and the source of transmission, and identify whether the signal data receiver is itself; if yes, proceed to step (3); if not, proceed to step (4).

[0053] (3) Retrieve the signal type; if it is routing information, add the routing information to its own routing table; if it is a data message, hand it over to the upper layer application;

[0054] (4) If the signal receiver can be found, forward the signal according to the routing table and the next hop address; if the signal receiver cannot be found, proceed to step (5).

[0055] (5) Delete signal data.

[0056] In step (4), after forwarding the signal data, three waiting cycles are started. If there is no reply in each cycle, the signal data is forwarded repeatedly until a new signal is received. Then, the signal data that has been waiting the longest is deleted. Since the processor module does not have enough memory to store too many messages, when a new message comes, the longest signal is deleted. This process is repeated to enable the Mesh self-organizing network long-distance wireless communication algorithm to communicate stably and efficiently over long distances.

[0057] like Figure 4 As shown, after receiving an emergency voice message, the mediation module includes the following steps:

[0058] (1) Preprocess the received voice packet to restore the voice packet to the original audio signal, and then execute step (2).

[0059] (2) The processor module further digitizes the audio signal, converts the continuous audio signal into a discrete digital signal for transmission, and identifies the digital signal. After successful identification, step (3) is executed.

[0060] (3) The pulse code modulation technology built into the processor module converts the digital signal into a modulated signal suitable for transmission, and then sends out the signal command.

[0061] In step (1), the mediation module has a built-in frequency discriminator. The voice packet detects the frequency change of the signal through the frequency discriminator and converts it into the corresponding voltage change to recover the original audio signal. Once the original audio signal is recovered, the voice recognition module built into the processor module will recognize the preset emergency disaster keywords. Once these keywords are successfully recognized, the system will immediately determine that it is an emergency and trigger the emergency response mechanism.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An emergency communication device, characterized by Include: Processor module; Wireless communication module, the wireless communication module is connected with processor module through SPI bus; Transmit module, the transmit module is electrically connected with processor module through I2C bus; Mediation module, the mediation module is electrically connected with processor module through I2C bus; Display module, the display module is electrically connected with processor module through I2C bus; Wherein, the mediation module and display module are electrically connected on the same I2C bus.

2. An emergency communication device according to claim 1, wherein, The processor module is connected with voice recognition module through O / I interface, and the voice recognition module is electrically connected with microphone.

3. The emergency communication device of claim 1, wherein, The mediation module adopts analog circuit inside to carry out radio frequency amplification and quadrature signal frequency reduction processing, and the circuit in the mediation module chip is electrically connected with power supply chip circuit.

4. The emergency communication device of claim 1, wherein, The wireless communication module defines Mesh self-organizing network protocol inside, and the main structure of Mesh self-organizing network protocol is composed of destination address, source address, load size and load.

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