Railway disaster alarm information uploading device based on 450M communication

Abstract

The utility model discloses a railway disaster alarm information uploading device based on 450M communication, which belongs to the technical field of railway communication and comprises a single chip microcomputer module, a relay module, a 450M transmitting module, a voice control module and a detecting and recording module. The single-chip microcomputer module is externally connected with an RS485 interface of a disaster prevention detection system. The single-chip microcomputer module is connected with the relay module. The relay module is respectively connected with the 450M transmitting module, the voice control module and the detection recording module; the detection recording module is connected with the single-chip microcomputer module. According to the utility model, the problem that the alarm information is difficult to automatically upload under the condition that the transmission capability of the railway alarm information is guaranteed is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway communications, and in particular relates to a railway disaster alarm information uploading device based on 450M communication. Background Art

[0002] Mountainous areas are characterized by complex terrain, steep slopes, sharp turns, and densely connected bridges and tunnels. These features expose railways along these routes to a variety of natural disaster threats, including debris flows, landslides, subsidence, rockfall, and tunnel block collapse. The sheer size and complex terrain of these areas hinder the long-distance upload of railway alarm information, and existing railway disaster alarm upload devices struggle to autonomously upload alarm information while maintaining transmission capacity. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a railway disaster alarm information uploading device based on 450M communication, which solves the problem of difficulty in realizing autonomous uploading of alarm information while ensuring the railway alarm information transmission capability.

[0004] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is:

[0005] The utility model provides a railway disaster alarm information uploading device based on 450M communication, which includes a single-chip microcomputer module, a relay module, a 450M transmission module, a voice control module and a detection and recording module;

[0006] The single-chip microcomputer module is connected to the RS485 interface of the disaster prevention detection system; the single-chip microcomputer module is connected to the relay module; the relay module is respectively connected to the 450M transmission module, the voice control module and the detection and recording module; the detection and recording module is connected to the single-chip microcomputer module.

[0007] The beneficial effects of the present invention are as follows: the present invention provides a railway disaster alarm information uploading device based on 450M communication, and the disaster prevention detection system is connected to the single-chip microcomputer module through the RS485 interface, which can stably and reliably transmit the alarm information upload signal to the single-chip microcomputer to execute autonomous uploading of the alarm information. After the single-chip microcomputer receives the alarm information upload signal, it first controls the 450M transmitting module to open the antenna and turn on the call function through the relay module, and then controls the voice control module to play the pre-stored alarm audio, and controls the detection recording module to turn on the microphone to record the played alarm audio, and encodes and stores it in the single-chip microcomputer module, so that the alarm audio is played as The alarm information is uploaded to the train number adjacent to the railway disaster alarm information uploading device through the 450M transmission module. The train number can receive the alarm audio based on its 450M frequency band walkie-talkie, so that the device can automatically upload the alarm information after receiving the alarm command, providing a basis for the nearby trains to take timely risk avoidance. The utility model utilizes the characteristics of the 450M transmission module with good propagation characteristics, narrow frequency band, strong anti-interference ability and good penetration, which effectively ensures the stability and reliability of railway alarm information transmission, provides information support for the emergency risk avoidance of nearby trains, and by storing the uploaded alarm audio, it can provide a basis for subsequent rapid positioning and analysis of the alarm section.

[0008] Preferably, the single-chip microcomputer module includes a single-chip microcomputer U5 of model STM32F407VET6, an RS485 receiving chip U21 of model SP3485EEN and a TF storage chip TF1 of model TF-CARDH1.8; the single-chip microcomputer U5 is connected to the TF storage chip TF1;

[0009] The PA9 pin of the single-chip microcomputer U5 is connected to the RO pin of the RS485 receiving chip U21; the PA10 pin of the single-chip microcomputer U5 is connected to the DI pin of the RS485 receiving chip U21; the PA11 pin of the single-chip microcomputer U5 is respectively connected to the RE pin and DE pin of the RS485 receiving chip U21; the 485A pin and 485B pin of the RS485 receiving chip U21 are connected to the RS485 interface of the disaster prevention detection system; the PD8 pin, PD9 pin and PD10 pin of the single-chip microcomputer U5 are all connected to the relay module; the PC8 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin, PC13 pin and PD2 pin of the single-chip microcomputer U5 are connected one by one to the DAT0 pin, DAT1 pin, DAT2 pin, DAT3 pin, CLK pin, CD pin and CMD pin of the TF storage chip TF1; the PB7 pin, PB8 pin and PB9 pin of the single-chip microcomputer U5 are connected to the detection and recording module.

[0010] The beneficial effects of adopting the above-mentioned preferred scheme are: after the single-chip microcomputer module in the utility model receives the alarm information upload signal of the disaster prevention detection system, it controls the 450M transmission module through the relay module to start the call, and controls the voice control module through the relay module to play the alarm audio, so as to realize the transmission of the alarm audio by the 450M transmission module and realize the autonomous uploading of the alarm information. The single-chip microcomputer module also starts the detection recording module through the relay module to record, encode and store the played alarm audio, so as to provide a basis for the subsequent rapid positioning and analysis of the railway line disaster situation.

[0011] Preferably, the relay module includes a first relay submodule, a second relay submodule and a third relay submodule;

[0012] The first relay submodule, the second relay submodule and the third relay submodule respectively include a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2, a diode D1, a transistor output optocoupler U8 with a model number CYTLP521-1 (GB-TP2), a power relay U1 with a model number HF46F / 012-HS1_C5158828 and a wire-to-board needle header U3 with a model number XY-XHB2.54-2A11;

[0013] One end of the resistor R1 serves as the relay input end; the other end of the resistor R1 is connected to one end of the resistor R3 and the base of the transistor Q1; the other end of the resistor R3 is connected to the emitter of the transistor Q1 and the second end of the transistor output optical coupler U8; the collector of the transistor Q1 is connected to one end of the resistor R2 and the first end of the transistor output optical coupler U8; the other end of the resistor R2 is connected to an external +5V power supply; the fourth end of the transistor output optical coupler U8 is connected to the cathode of the diode D1 and the fourth end of the power relay U1, and is also connected to an external +12V power supply. Source; the third end of the transistor output optocoupler U8 is connected to one end of the resistor R4; the other end of the resistor R4 is respectively connected to one end of the resistor R5 and the base of the transistor Q2; the other end of the resistor R5 is connected to the emitter of the transistor Q2 and is grounded; the collector of the transistor Q2 is respectively connected to the anode of the diode D1 and the first end of the power relay U1; the second and third ends of the power relay U1 are connected to the second and first pins of the wire-to-board needle holder U3 in a one-to-one correspondence; the second and first pins of the wire-to-board needle holder U3 serve as relay output ends;

[0014] The relay input end of the first relay submodule is connected to the PD8 pin of the single-chip microcomputer U5; the relay output end of the first relay submodule is connected to the 450M transmitting module; the relay input end of the second relay submodule is connected to the PD9 pin of the single-chip microcomputer U5; the relay output end of the second relay submodule is connected to the voice control module; the relay input end of the third relay submodule is connected to the PD10 pin of the single-chip microcomputer U5; the relay output end of the third relay submodule is connected to the detection and recording module.

[0015] The beneficial effects of adopting the above-mentioned preferred scheme are as follows: the utility model starts the call function of the 450M transmitting module by closing the first relay submodule, starts the voice control module to play the pre-stored alarm audio by closing the second relay submodule, transmits the alarm audio through the 450M transmitting module call, realizes autonomous uploading of alarm information, starts the detection and recording module by closing the third relay submodule, records the played alarm audio, and provides a basis for subsequent rapid positioning and analysis of railway line disaster conditions.

[0016] Preferably, the 450M transmission module adopts a 450M frequency band intercom model TP530;

[0017] The second pin and the first pin of the antenna driving end of the 450M frequency band intercom are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the first relay submodule in a one-to-one correspondence.

[0018] The beneficial effects of adopting the above-mentioned preferred solution are as follows: the 450M frequency band walkie-talkie model TP530 has a high-performance speaker and a built-in AI intelligent noise cancellation algorithm to make calls clearer and more specific. The walkie-talkie supports two charging methods: Type-C and a charger, and can be charged anytime and anywhere. The entire device meets the IP67 protection level and can provide remote, long-lasting and reliable communication guarantees for uploading railway alarm information.

[0019] Preferably, the voice control module adopts an audible and visual alarm of model HXA-B02;

[0020] The SPK-pin and SPK+ pin of the sound and light alarm are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the second relay submodule in a one-to-one correspondence.

[0021] The beneficial effects of adopting the above-mentioned preferred solution are: the sound and light alarm model HXA-B02 has a rated power of 25W, the sound level can reach 120dB, 12 basic alarm audios can be pre-stored by default, and special alarm audios can be customized. Based on the alarm audio played by the sound and light alarm, combined with the 450M frequency band walkie-talkie after the antenna is opened, it can realize the autonomous uploading of alarm information.

[0022] Preferably, the detection recording module comprises a microphone and an audio coding chip U4 of model WT2000H0-24SS.

[0023] The microphone is connected with a MIC pin of the audio coding chip U4; a ADKEY pin and a MIC_BIAS pin of the audio coding chip U4 are respectively connected with a 2nd pin and a 1st pin of a middle line pair of the board needle holder U3 in the third relay submodule; an SPI_MISO pin, an SPI_CLK pin and an SPI_MOSI pin of the audio coding chip U4 are connected with a PB7 pin, a PB8 pin and a PB9 pin of the single-chip microcomputer U5.

[0024] The above preferred scheme has the beneficial effect that the played alarm audio recording can be encoded and stored into a TF card of the single-chip microcomputer module through the microphone and the audio coding chip U4 of model WT2000H0-24SS, so as to be quickly positioned and analyzed for the alarm section subsequently.

[0025] Other advantages of the present application will be analyzed in more detail in the following embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 A block diagram of a railway disaster alarm information uploading device based on 450M communication in the embodiment of the present application.

[0028] Figure 2 A circuit principle diagram of the single-chip microcomputer U5 in the embodiment of the present application.

[0029] Figure 3 A circuit principle diagram of each relay submodule in the embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, in one embodiment of the present utility model, the present utility model provides a railway disaster alarm information uploading device based on 450M communication, including a single-chip computer module, a relay module, a 450M transmission module, a voice control module and a detection and recording module;

[0032] The single-chip microcomputer module is connected to the RS485 interface of the disaster prevention detection system; the single-chip microcomputer module is connected to the relay module; the relay module is respectively connected to the 450M transmission module, the voice control module and the detection and recording module; the detection and recording module is connected to the single-chip microcomputer module.

[0033] In this embodiment, the disaster prevention detection system is a system set up by the railway security center that can send alarm instructions, or a disaster sensing detection alarm device set up along the railway line section that has disaster sensing detection capabilities and wireless signal transmission capabilities. It is an existing system or device, such as a railway line foreign object intrusion monitoring information upload device described in application number 202322187810X adopted by the railway line security center.

[0034] like Figure 2 As shown, the single-chip microcomputer module includes a single-chip microcomputer U5 of model STM32F407VET6, an RS485 receiving chip U21 of model SP3485EEN, and a TF storage chip TF1 of model TF-CARDH1.8; the single-chip microcomputer U5 is connected to the TF storage chip TF1;

[0035] The PA9 pin of the single-chip microcomputer U5 is connected to the RO pin of the RS485 receiving chip U21; the PA10 pin of the single-chip microcomputer U5 is connected to the DI pin of the RS485 receiving chip U21; the PA11 pin of the single-chip microcomputer U5 is respectively connected to the RE pin and DE pin of the RS485 receiving chip U21; the 485A pin and 485B pin of the RS485 receiving chip U21 are connected to the RS485 interface of the disaster prevention detection system; the PD8 pin, PD9 pin and PD10 pin of the single-chip microcomputer U5 are all connected to the relay module; the PC8 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin, PC13 pin and PD2 pin of the single-chip microcomputer U5 are connected one by one to the DAT0 pin, DAT1 pin, DAT2 pin, DAT3 pin, CLK pin, CD pin and CMD pin of the TF storage chip TF1; the PB7 pin, PB8 pin and PB9 pin of the single-chip microcomputer U5 are connected to the detection and recording module.

[0036] The relay module includes a first relay submodule, a second relay submodule and a third relay submodule;

[0037] like Figure 3 As shown, the first relay submodule, the second relay submodule and the third relay submodule respectively include a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2, a diode D1, a transistor output optocoupler U8 with a model number of CYTLP521-1 (GB-TP2), a power relay U1 with a model number of HF46F / 012-HS1_C5158828 and a wire-to-board needle header U3 with a model number of XY-XHB2.54-2A11;

[0038] One end of the resistor R1 serves as the relay input end; the other end of the resistor R1 is connected to one end of the resistor R3 and the base of the transistor Q1; the other end of the resistor R3 is connected to the emitter of the transistor Q1 and the second end of the transistor output optical coupler U8; the collector of the transistor Q1 is connected to one end of the resistor R2 and the first end of the transistor output optical coupler U8; the other end of the resistor R2 is connected to an external +5V power supply; the fourth end of the transistor output optical coupler U8 is connected to the cathode of the diode D1 and the fourth end of the power relay U1, and is also connected to an external +12V power supply. Source; the third end of the transistor output optocoupler U8 is connected to one end of the resistor R4; the other end of the resistor R4 is respectively connected to one end of the resistor R5 and the base of the transistor Q2; the other end of the resistor R5 is connected to the emitter of the transistor Q2 and is grounded; the collector of the transistor Q2 is respectively connected to the anode of the diode D1 and the first end of the power relay U1; the second and third ends of the power relay U1 are connected to the second and first pins of the wire-to-board needle holder U3 in a one-to-one correspondence; the second and first pins of the wire-to-board needle holder U3 serve as relay output ends;

[0039] The relay input end of the first relay submodule is connected to the PD8 pin of the single-chip microcomputer U5; the relay output end of the first relay submodule is connected to the 450M transmitting module; the relay input end of the second relay submodule is connected to the PD9 pin of the single-chip microcomputer U5; the relay output end of the second relay submodule is connected to the voice control module; the relay input end of the third relay submodule is connected to the PD10 pin of the single-chip microcomputer U5; the relay output end of the third relay submodule is connected to the detection and recording module.

[0040] The 450M transmission module adopts a 450M frequency band walkie-talkie model TP530;

[0041] The second pin and the first pin of the antenna driving end of the 450M frequency band intercom are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the first relay submodule in a one-to-one correspondence.

[0042] The voice control module adopts the sound and light alarm model HXA-B02;

[0043] The SPK-pin and SPK+ pin of the sound and light alarm are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the second relay submodule in a one-to-one correspondence.

[0044] The detection and recording module includes a microphone and an audio encoding chip U4 of model WT2000H0-24SS;

[0045] The microphone is connected to the MIC pin of the audio encoding chip U4; the ADKEY pin and MIC_BIAS pin of the audio encoding chip U4 are respectively connected to the 2nd pin and 1st pin of the wire-to-board pin header U3 in the third relay sub-module; the SPI_MISO pin, SPI_CLK pin and SPI_MOSI pin of the audio encoding chip U4 are connected to the PB7 pin, PB8 pin and PB9 pin of the microcontroller U5.

[0046] The working principle of the utility model is as follows: the utility model provides a railway disaster alarm information uploading device based on 450M communication, which is connected to the disaster prevention detection system through the single-chip microcomputer module, and receives the alarm command sent by the disaster prevention detection system after detecting the railway disaster; the 485A pin and 485B pin of the RS485 receiving chip U21 are connected to the RS485 interface of the disaster prevention detection system, and the PA9 pin of the single-chip microcomputer U5 is connected to the RO pin of the RS485 receiving chip U21 of model SP3485EEN, the PA10 pin of the single-chip microcomputer U5 is connected to the DI pin of the RS485 receiving chip U21, and the PA11 pin of the single-chip microcomputer U5 is connected to the RE pin and D pin of the RS485 receiving chip U21 respectively. E pin is connected to realize the transmission of the alarm information upload signal to the single-chip microcomputer module through the disaster prevention detection system; the PD8 pin of the single-chip microcomputer U5 is connected to one end of the resistor R1 in the first relay sub-module, and the 2nd pin and 1st pin of the line-to-board needle seat U3 in the first relay sub-module block are respectively connected to the 2nd pin and 1st pin of the antenna driving end of the 450M frequency band intercom, so that the first relay sub-module is driven to close by the single-chip microcomputer U5, so that the relay module first controls the 450M frequency band intercom to open the antenna and turn on the call function; the PD9 pin of the single-chip microcomputer U5 is connected to one end of the resistor R1 in the second relay sub-module, and the 2nd pin and 1st pin of the line-to-board needle seat U3 in the second relay sub-module block are respectively connected to the It is connected one-to-one with the SPK-pin and SPK+pin of the sound and light alarm, and the second relay submodule is driven to close by the single-chip microcomputer U5, so that the sound and light alarm plays the pre-stored alarm audio, and then combined with the 450M frequency band intercom to transmit the alarm audio to the railway train adjacent to the alarm information uploading device, so as to realize the autonomous uploading of alarm information; the PD10 pin of the single-chip microcomputer U5 is connected to one end of the resistor R1 in the third relay submodule, and the 2nd pin and 1st pin of the line-to-board pin header U3 in the third relay submodule are respectively connected one-to-one with the ADKEY pin and MIC_BIAS pin of the audio encoding chip U4, so as to realize the alarm audio played by the sound and light alarm based on the microphone recording, and through the audio encoding chip U4 The recorded alarm audio is encoded and then connected to the PB7 pin, PB8 pin and PB9 pin of the single-chip computer U5 through the SPI_MISO pin, SPI_CLK pin and SPI_MOSI pin of the audio encoding chip U4, and the PC8 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin, PC13 pin and PD2 pin of the single-chip computer U5 are connected one-to-one with the DAT0 pin, DAT1 pin, DAT2 pin, DAT3 pin, CLK pin, CD pin and CMD pin of the TF storage chip TF1, so that the encoding result of the alarm audio is stored in the TF storage chip TF1, providing a basis for subsequent rapid positioning and analysis of railway line disasters.

[0047] In the embodiment, the pre-stored alarm audio of the railway disaster alarm information uploading device based on 450M communication set in different railway line sections has the position information of the railway line section; the alarm audio encoding result stored in the TF storage chip TF1 has the time attribute of the storage time, which can provide the basis for tracing the railway disaster occurrence time and analyzing the timeliness of the railway disaster alarm uploading.

[0048] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A railway disaster alarm information uploading device based on 450M communication, characterized in that: Including single chip microcomputer module, relay module, 450M transmission module, voice control module and detection and recording module; The single-chip microcomputer module is connected to the RS485 interface of the disaster prevention detection system; the single-chip microcomputer module is connected to the relay module; the relay module is respectively connected to the 450M transmission module, the voice control module and the detection and recording module; the detection and recording module is connected to the single-chip microcomputer module.

2. The railway disaster alarm information uploading device based on 450M communication according to claim 1 is characterized in that: The single-chip microcomputer module includes a single-chip microcomputer U5 of model STM32F407VET6, an RS485 receiving chip U21 of model SP3485EEN, and a TF storage chip TF1 of model TF-CARDH1.8; the single-chip microcomputer U5 is connected to the TF storage chip TF1; The PA9 pin of the single-chip microcomputer U5 is connected to the RO pin of the RS485 receiving chip U21; the PA10 pin of the single-chip microcomputer U5 is connected to the DI pin of the RS485 receiving chip U21; the PA11 pin of the single-chip microcomputer U5 is respectively connected to the RE pin and DE pin of the RS485 receiving chip U21; the 485A pin and 485B pin of the RS485 receiving chip U21 are connected to the RS485 interface of the disaster prevention detection system; the PD8 pin, PD9 pin and PD10 pin of the single-chip microcomputer U5 are all connected to the relay module; the PC8 pin, PC9 pin, PC10 pin, PC11 pin, PC12 pin, PC13 pin and PD2 pin of the single-chip microcomputer U5 are connected one by one to the DAT0 pin, DAT1 pin, DAT2 pin, DAT3 pin, CLK pin, CD pin and CMD pin of the TF storage chip TF1; the PB7 pin, PB8 pin and PB9 pin of the single-chip microcomputer U5 are connected to the detection and recording module.

3. The railway disaster alarm information uploading device based on 450M communication according to claim 2 is characterized in that: The relay module includes a first relay submodule, a second relay submodule and a third relay submodule; The first relay submodule, the second relay submodule and the third relay submodule respectively include a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2, a diode D1, a transistor output optocoupler U8 with a model number CYTLP521-1 (GB-TP2), a power relay U1 with a model number HF46F / 012-HS1_C5158828 and a wire-to-board needle header U3 with a model number XY-XHB2.54-2A11; One end of the resistor R1 serves as the relay input end; the other end of the resistor R1 is connected to one end of the resistor R3 and the base of the transistor Q1; the other end of the resistor R3 is connected to the emitter of the transistor Q1 and the second end of the transistor output optical coupler U8; the collector of the transistor Q1 is connected to one end of the resistor R2 and the first end of the transistor output optical coupler U8; the other end of the resistor R2 is connected to an external +5V power supply; the fourth end of the transistor output optical coupler U8 is connected to the cathode of the diode D1 and the fourth end of the power relay U1, and is also connected to an external +12V power supply. Source; the third end of the transistor output optocoupler U8 is connected to one end of the resistor R4; the other end of the resistor R4 is respectively connected to one end of the resistor R5 and the base of the transistor Q2; the other end of the resistor R5 is connected to the emitter of the transistor Q2 and is grounded; the collector of the transistor Q2 is respectively connected to the anode of the diode D1 and the first end of the power relay U1; the second and third ends of the power relay U1 are connected to the second and first pins of the wire-to-board needle holder U3 in a one-to-one correspondence; the second and first pins of the wire-to-board needle holder U3 serve as relay output ends; The relay input end of the first relay submodule is connected to the PD8 pin of the single-chip microcomputer U5; the relay output end of the first relay submodule is connected to the 450M transmitting module; the relay input end of the second relay submodule is connected to the PD9 pin of the single-chip microcomputer U5; the relay output end of the second relay submodule is connected to the voice control module; the relay input end of the third relay submodule is connected to the PD10 pin of the single-chip microcomputer U5; the relay output end of the third relay submodule is connected to the detection and recording module.

4. The railway disaster alarm information uploading device based on 450M communication according to claim 3 is characterized in that: The 450M transmission module adopts a 450M frequency band walkie-talkie model TP530; The second pin and the first pin of the antenna driving end of the 450M frequency band intercom are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the first relay submodule in a one-to-one correspondence.

5. The railway disaster alarm information uploading device based on 450M communication according to claim 3 is characterized in that: The voice control module adopts the sound and light alarm model HXA-B02; The SPK-pin and SPK+ pin of the sound and light alarm are respectively connected to the second pin and the first pin of the line-to-board pin socket U3 in the second relay submodule in a one-to-one correspondence.

6. The railway disaster alarm information uploading device based on 450M communication according to claim 3 is characterized in that: The detection and recording module includes a microphone and an audio encoding chip U4 of model WT2000H0-24SS; The microphone is connected to the MIC pin of the audio encoding chip U4; the ADKEY pin and MIC_BIAS pin of the audio encoding chip U4 are respectively connected to the 2nd pin and the 1st pin of the wire-to-board pin header U3 in the third relay sub-module; the SPI_MISO pin, SPI_CLK pin and SPI_MOSI pin of the audio encoding chip U4 are connected to the PB7 pin, PB8 pin and PB9 pin of the microcontroller U5.

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