Railway video equipment monitoring box

Abstract

The embodiment of the utility model discloses a railway video equipment monitoring box which comprises a monitoring box body which is internally provided with a mainboard. The mainboard is provided with a power supply monitoring lightning protection circuit used for obtaining power supply state information and the number of lightning strokes in real time, a wireless circuit used for collecting the current longitude and latitude, an optical fiber switching circuit used for collecting optical power, and a monitoring circuit. The monitoring circuit is connected with the power monitoring lightning protection circuit, the wireless circuit and the optical fiber switching circuit; the monitoring circuit is in wireless communication with a network management platform at the rear end through a wireless circuit, and is in wired communication with the network management platform through an optical fiber switching circuit; the monitoring circuit monitors the temperature and humidity in the box body before detection, generates corresponding temperature and humidity data, and uploads the power state information, the number of lightning strokes, the longitude and latitude, the optical power and the temperature and humidity data to the network management platform. Various information data are remotely uploaded to a unified network management platform through the monitoring module, and the problem that equipment of an existing railway system cannot be remotely monitored in a unified mode is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring, in particular to a monitoring box for railway video equipment. Background Art

[0002] There are a large number of video sites in the existing railway system. The video system belongs to a high-tech system, involving the integration of power supply, fiber optic network and various devices. The devices set outdoors are easily affected by lightning strikes, power fluctuations, fiber optic aging, weather conditions, etc. It is very difficult to simply query any device problem by manpower. At present, the devices that make up the video system belong to different manufacturers, and the management systems are not integrated. It is necessary to manually inspect the devices regularly for faults, which is difficult to cover all devices and areas, and there are risks of missed inspection and misjudgment. Some devices cannot obtain the status information of the devices in real time, which brings difficulties to fault warning and rapid disposal. After the information of the on-site site (such as temperature, humidity, voltage, current, power consumption, etc.) is collected by each device, it is not uniformly uploaded to the monitoring platform, and remote monitoring cannot be realized; and most of them are decentralized management, lacking a unified platform and data sharing mechanism, making it difficult to realize global monitoring and collaborative disposal. Summary of the Utility Model

[0003] In view of the above technical problems, an embodiment of the utility model provides a monitoring box for railway video equipment to solve the problem that the devices in the existing railway system cannot be remotely monitored uniformly.

[0004] An embodiment of the utility model provides a monitoring box for railway video equipment, including a monitoring box body. A main board is arranged in the monitoring box body. A power supply monitoring and lightning protection circuit for real-time obtaining power supply status information and lightning strike times, a wireless circuit for collecting the current longitude and latitude, and a fiber optic switching circuit for collecting optical power are arranged on the main board. Among them, a monitoring circuit is also arranged on the main board, and the monitoring circuit is connected to the power supply monitoring and lightning protection circuit, the wireless circuit and the fiber optic switching circuit;

[0005] The monitoring circuit communicates wirelessly with the backend network management platform through the wireless circuit and communicates wiredly with the network management platform through the fiber optic switching circuit;

[0006] The monitoring circuit detects the temperature and humidity in the monitoring box body before and generates corresponding temperature and humidity data, and uploads the power supply status information, lightning strike times, longitude and latitude, optical power and temperature and humidity data to the network management platform.

[0007] Optionally, in the monitoring box for railway video equipment, the monitoring circuit includes a control module, a detection module and a flash memory module; the control module is connected to the detection module, the flash memory module, the power supply monitoring and lightning protection circuit, the wireless circuit and the fiber optic switching circuit;

[0008] The detection module detects the temperature and humidity in the current monitoring box and outputs the corresponding temperature and humidity data to the control module.

[0009] The control module transmits the received power status information, lightning strike times, longitude and latitude, optical power, and temperature and humidity data to the wireless circuit or the optical fiber switching circuit; it also writes the power status information, lightning strike times, longitude and latitude, optical power, and temperature and humidity data into the flash memory module for storage.

[0010] Optionally, in the railway video device monitoring box, the control module includes a CPU, a first crystal oscillator, a first capacitor, and a second capacitor; the PE2 pin, PE3 pin, PB8 pin, and PB9 pin of the CPU are all connected to the optical fiber switching circuit; the PE4 pin, PE5 pin, NRST pin, PC10 pin, and PC12 pin of the CPU are all connected to the wireless circuit; the PE6 pin, PB15 pin, PD10 pin, PD11 pin, PD12 pin, PD13 pin, PD15 pin, PA13 pin, and PA14 pin of the CPU are all connected to the power supply monitoring and lightning protection circuit; the PC14_OSC32_IN pin of the CPU is connected to one end of the first crystal oscillator and one end of the first capacitor, the PC15_OSC32_OUT pin of the CPU is connected to the other end of the first crystal oscillator and one end of the second capacitor, and the other end of the first capacitor is connected to the other end of the second capacitor and the ground.

[0011] Optionally, in the railway video device monitoring box, the control module further includes a second crystal oscillator, a third capacitor, a fourth capacitor, a first resistor, a second resistor, and a third resistor.

[0012] The 3rd pin of the second crystal oscillator is connected to one end of the third resistor, one end of the third capacitor, and the OSC_OUT pin of the CPU; the 1st pin of the second crystal oscillator is connected to the other end of the third resistor, one end of the fourth capacitor, and the OSC_IN pin of the CPU; the other ends of the third capacitor and the fourth capacitor, the 2nd pin and the 4th pin of the second crystal oscillator are all grounded; the first resistor is connected between the BOOT0 pin of the CPU and the ground, and the second resistor is connected between the PB2 pin of the CPU and the ground.

[0013] Optionally, in the railway video device monitoring box, the detection module includes a memory, a temperature sensor, a humidity sensor, a fourth resistor, a fifth resistor, and a fifth capacitor.

[0014] The A0, A1, A2 pins and the GND pin of the memory are all grounded; the VCC pin of the memory is connected to the power supply terminal, one end of the fourth resistor, one end of the fifth resistor and one end of the fifth capacitor; the WP pin of the memory is connected to the other end of the fifth capacitor and the ground; the SCL pin of the memory is connected to the other end of the fifth resistor, the SCL pin of the temperature sensor, the SCL pin of the humidity sensor and the PB6 pin of the CPU; the SDA pin of the memory is connected to the other end of the fourth resistor, the SDA pin of the temperature sensor, the SDA pin of the humidity sensor and the PB7 pin of the CPU; the VCC pin and the OS pin of the temperature sensor are both connected to the power supply terminal; the A0, A1, A2 pins and the GND pin of the temperature sensor are all grounded; the VDD pin of the humidity sensor is connected to the power supply terminal, and the GND pin of the humidity sensor is grounded.

[0015] Optionally, in the railway video equipment monitoring box, the detection module further includes a sixth resistor, a seventh resistor and an eighth resistor;

[0016] The sixth resistor is connected between the SCL pin of the memory and the PB6 pin of the CPU, the seventh resistor is connected between the SDA pin of the memory and the PB7 pin of the CPU, and the eighth resistor is connected between the OS pin of the temperature sensor and the power supply terminal.

[0017] Optionally, in the railway video equipment monitoring box, the flash memory module includes a flash memory chip, a ninth resistor, a tenth resistor and a sixth capacitor;

[0018] The VCC pin of the flash memory chip is connected to one end of the sixth capacitor and the power supply terminal, the other end of the sixth capacitor is grounded, and the SI, SCK, CS, WP, HOLD, SO pins of the flash memory chip are connected one-to-one with the PB5, PB3, PD3, PD0, PA9, PB4 pins of the CPU; the GND pin of the flash memory chip is grounded, the WP pin of the flash memory chip is further connected to the power supply terminal through the tenth resistor, and the HOLD pin of the flash memory chip is further connected to the power supply terminal through the ninth resistor.

[0019] The monitoring box for railway video equipment provided by the embodiment of the present utility model includes a monitoring box body. A main board is arranged inside the monitoring box body. On the main board, there are a power supply monitoring and lightning protection circuit for real-time acquisition of power supply status information and lightning strike times, a wireless circuit for collecting the current longitude and latitude, a fiber optic switching circuit for collecting optical power, and a monitoring circuit. The monitoring circuit is connected to the power supply monitoring and lightning protection circuit, the wireless circuit, and the fiber optic switching circuit. The monitoring circuit communicates wirelessly with the back-end network management platform through the wireless circuit and communicates wiredly with the network management platform through the fiber optic switching circuit. The monitoring circuit detects the temperature and humidity inside the monitoring box before monitoring and generates corresponding temperature and humidity data, and uploads the power supply status information, lightning strike times, longitude and latitude, optical power, and temperature and humidity data to the network management platform. By remotely uploading various information and data to a unified network management platform through the monitoring module, the problem that the equipment in the existing railway system cannot be uniformly remotely monitored is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural block diagram of the monitoring box for railway video equipment in the embodiment of the present utility model.

[0021] Figure 2 It is a circuit diagram of the control module in the embodiment of the present utility model.

[0022] Figure 3 It is a circuit diagram of the detection module in the embodiment of the present utility model.

[0023] Figure 4 It is a circuit diagram of the flash memory module in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. For the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Please refer to simultaneously Figures 1 to 4, the monitoring box for railway video equipment provided by the embodiment of the present utility model includes a monitoring box body, and a main board is arranged inside the monitoring box body. A power supply monitoring and lightning protection circuit 10, a monitoring circuit 20, a wireless circuit 30, and an optical fiber switching circuit 40 are arranged on the main board; the monitoring circuit 20 is connected to the power supply monitoring and lightning protection circuit 10, the wireless circuit 30, and the optical fiber switching circuit 40. The power supply monitoring and lightning protection circuit 10 is used for lightning protection, real-time acquisition of power supply status information (including whether the input power supply is overvoltage, undervoltage, overcurrent, and leakage) and the number of lightning strikes; the wireless circuit 30 collects the current longitude and latitude, and the optical fiber switching circuit 40 collects the optical power. The monitoring circuit 20 communicates wirelessly with the backend network management platform through the wireless circuit 30 and communicates wiredly with the network management platform through the optical fiber switching circuit 40. The monitoring circuit 20 detects the temperature and humidity inside the monitoring box body before monitoring and generates corresponding temperature and humidity data, and remotely uploads the power supply status information, the number of lightning strikes, the longitude and latitude, the optical power, and the temperature and humidity data wirelessly or wiredly to the network management platform.

[0026] It should be understood that the power supply monitoring and lightning protection circuit 10, the wireless circuit 30, and the optical fiber switching circuit 40 are prior arts, and the specific circuits thereof will not be described in detail here. This embodiment mainly improves the existing monitoring module and can remotely upload various collected information to a unified network management platform.

[0027] Existing devices such as a camera, a flash, an LED light, and a door magnet (equivalent to a switch) are also arranged inside the monitoring box body and are connected to the monitoring circuit 20. The monitoring circuit 20 can detect the signal transmitted by the door magnet to judge whether the door of the monitoring box for railway video equipment is opened and the number of openings, and display whether the current box door is opened or closed on the network management platform. The monitoring circuit 20 also controls the flash to flash and the camera to capture the photo of the maintenance personnel when the door is opened, and uploads it to the network management platform for display. In specific implementation, the monitoring box for railway video equipment can also communicate with the network management platforms of different railway administrations through a switch (or switching circuit) to realize the aggregation and exchange of multiple paths of information.

[0028] In this embodiment, the monitoring box body is made of 1.2MM 304 stainless steel material, and the box body size is width × height × thickness = 500mm × 679mm × 200mm; the box body adopts a strict closed design, supports IP55 (dust protection level 5, preventing the accumulation of harmful dust; waterproof level 5, no damage when washed with water), and an installation position for the door magnet is provided on the box door.

[0029] The power supply monitoring and lightning protection circuit 10 is used for lightning protection and is composed of a microcontroller with the model STM32F051C8T6TR and its peripheral circuits. Under normal operating voltage, the resistance value of the lightning arrester in the power supply monitoring and lightning protection circuit 10 is very large, equivalent to an insulating state. When lightning occurs, a very high voltage will be generated in the metal line. Under the impact of this high voltage, the lightning arrester will be broken down to a low value in nanoseconds (ns), equivalent to a short-circuit state. The lightning current flows into the ground through the lightning arrester, controlling the voltage on the power line within a safe range, thereby protecting the backend equipment to ensure normal power supply of the system. And the state of the lightning arrester being struck is recoverable, that is, when the high-impact voltage disappears, the lightning arrester returns to its high-resistance state again.

[0030] At the same time, the power supply monitoring and lightning protection circuit 10 also detects whether the input power supply has overvoltage, undervoltage, overcurrent, leakage, etc. (the detection method is the prior art); when overvoltage, undervoltage, and overcurrent are detected (after sampling the voltage and current of the input power supply and comparing them with the preset reference voltage and reference current), the input power supply is controlled to stop output; when leakage is detected (the overcurrent coil converts the leakage into a voltage signal, and whether leakage occurs is judged according to the amplitude of this voltage signal), the input power supply is controlled to stop output and start timing. When the timing time (such as 15 minutes) reaches, the input power supply is controlled to resume the output state and continue to detect. If leakage is still detected at this time, the standby time (such as 30 minutes) starts to be timed. After the standby time reaches, the input power supply is controlled to resume the output state and continue to detect, repeating the detection and the control of the output state of the input power supply until the leakage is eliminated. The standby time can be maintained or increased each time (such as 30 minutes, 1 hour, 1.5 hours, etc.).

[0031] This embodiment improves the existing monitoring method and proposes the monitoring circuit 20. As Figure 1 shown, the monitoring circuit 20 includes a control module 21, a detection module 22, and a flash memory module 23; the control module 21 is connected to the detection module 22, the flash memory module 23, the power supply monitoring and lightning protection circuit 10, the wireless circuit 30, and the optical fiber switching circuit 40. The detection module 22 detects the temperature and humidity in the current monitoring box and outputs the corresponding temperature and humidity data to the control module 21. The control module 21 transmits the received power supply status information, lightning strike times, longitude and latitude, optical power, and temperature and humidity data to the wireless circuit 30 and the optical fiber switching circuit 40; and also writes the power supply status information, lightning strike times, longitude and latitude, optical power, and temperature and humidity data into the flash memory module 23 for storage. The power supply status information includes whether the input power supply has overvoltage, undervoltage, overcurrent, and leakage.

[0032] As Figure 2As shown in the figure, the control module 21 includes a CPU (Central Processing Unit) U1, a first crystal oscillator Y1, a first capacitor C1, and a second capacitor C2; the PE2 pin, PE3 pin, PB8 pin, and PB9 pin of the CPU U1 are all connected to the optical fiber switching circuit 40; the PE4 pin, PE5 pin, NRST pin, PC10 pin, and PC12 pin of the CPU U1 are all connected to the wireless circuit 30; the PE6 pin, PB15 pin, PD10 pin, PD11 pin, PD12 pin, PD13 pin, PD15 pin, PA13 pin, and PA14 pin of the CPU U1 are all connected to the power supply monitoring and lightning protection circuit 10; the PC14_OSC32_IN pin of the CPU U1 is connected to one end of the first crystal oscillator Y1 and one end of the first capacitor C1, the PC15_OSC32_OUT pin of the CPU U1 is connected to the other end of the first crystal oscillator Y1 and one end of the second capacitor C2, and the other end of the first capacitor C1 is connected to the other end of the second capacitor C2 and the ground.

[0033] Among them, the model of the CPU U1 is preferably GD32F207VE76, and the first crystal oscillator Y1, the first capacitor C1, and the second capacitor C2 are used to provide the first clock signal required for the operation of the CPU U1.

[0034] The CPU U1 receives the power supply status information transmitted by the power supply monitoring and lightning protection circuit 10 through signals K1 to K5, including the voltage and current values of 1 input main power supply and 3 output power supplies, as well as the judgment results of whether the input power supply is overvoltage, undervoltage, overcurrent, and leakage; then uploads this power supply status information to the network management platform.

[0035] It should be understood that when the CPU uploads various information data to the network management platform, it can be uploaded wirelessly through the wireless circuit 30 or wired through the optical fiber switching circuit 40. Here, the wireless circuit 30 and the optical fiber switching circuit 40 are set at the same time, and the corresponding upload method can be selected according to the communication signal strength or whether an external optical fiber is connected.

[0036] The 220V mains power is detected by the power supply monitoring and lightning protection circuit 10, and the corresponding alarm signal ALARM is output to the CPU U1. If the mains power fails, there is no output of this alarm signal ALARM. The CPU can judge whether the mains power has failed by judging whether the alarm signal ALARM is received; when the CPU judges a power failure, it quickly uploads to the network management platform through the wireless circuit 30, so as to realize the backhaul of the power failure information of the end point in the case of no backup power supply, achieving 100% accuracy. The CPU U1 is connected to the debugging pin and programming pin of the microcontroller in the power supply monitoring and lightning protection circuit 10 through the SWDIO signal and the SWCLK signal. The CPU U1 receives the number of lightning strikes transmitted by the microcontroller through the IO_485 signal and uploads it to the network management platform for display.

[0037] The CPU U1 communicates with the radio circuit 30 and transmits the longitude and latitude (GPS_SDA signal and GPS_SCL signal) transmitted by the radio circuit 30 to the 4G module or the fiber optic switching circuit 40 in the radio circuit 30; the CPU U1 outputs a reset signal RESET_N to control the reset of the 4G chip inside the radio circuit 30. The radio circuit 30 receives the received signal UART4_RX_2G sent by the backend network management platform and transmits it to the CPU U1. The received signal UART4_RX_2G is the corresponding control instruction, and the CPU U1 implements the corresponding control according to the control instruction. The CPU U1 transmits the data signal UART4_TX_2G that needs to be uploaded to the radio circuit 30 for transmission, so as to realize the information interaction and wireless communication between the local information and the backend network management platform.

[0038] The CPU U1 is connected to the 100M Ethernet through the fiber optic switching circuit 40 to build a wired channel for communication; the LOS_SFP1 signal, IIC_DATA signal, IIC_CLK signal, and FX_EN signal transmitted between the CPU U1 and the fiber optic switching circuit 40 are used to achieve corresponding data transmission. For example, the CPU uploads the optical power on the 3 optical fibers monitored by the fiber optic switching circuit 40 to the network management platform.

[0039] Preferably, the control module 21 further includes a second crystal oscillator Y2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, and a third resistor R3; the third pin of the second crystal oscillator Y2 is connected to one end of the third resistor R3, one end of the third capacitor C3, and the OSC_OUT pin of the CPU U1; the first pin of the second crystal oscillator Y2 is connected to the other end of the third resistor R3, one end of the fourth capacitor C4, and the OSC_IN pin of the CPU U1; the other ends of the third capacitor C3 and the fourth capacitor C4, the second pin and the fourth pin of the second crystal oscillator Y2 are all grounded; the first resistor R1 is connected between the BOOT0 pin of the CPU U1 and the ground, and the second resistor R2 is connected between the PB2 pin of the CPU U1 and the ground.

[0040] Among them, the second crystal oscillator Y2, the third capacitor C3, the fourth capacitor C4, and the third resistor R3 are used to provide a second clock signal for the CPU. The first resistor R1 and the second resistor R2 are used to ground the connected pins to configure the working parameters of the CPU.

[0041] As Figure 3As shown, the detection module 22 includes a memory U2, a temperature sensor U3, a humidity sensor U4, a fourth resistor R4, a fifth resistor R5, and a fifth capacitor C5; the A0 pin, A1 pin, A2 pin, and GND pin of the memory U2 are all grounded; the VCC pin of the memory U2 is connected to the power supply terminal (providing a power supply voltage of 3.3VD), one end of the fourth resistor R4, one end of the fifth resistor R5, and one end of the fifth capacitor C5; the WP pin of the memory U2 is connected to the other end of the fifth capacitor C5 and the ground; the SCL pin of the memory U2 is connected to the other end of the fifth resistor R5, the SCL pin of the temperature sensor U3, the SCL pin of the humidity sensor U4, and the PB6 pin of the CPU; the SDA pin of the memory U2 is connected to the other end of the fourth resistor R4, the SDA pin of the temperature sensor U3, the SDA pin of the humidity sensor U4, and the PB7 pin of the CPU; the VCC pin and the OS pin of the temperature sensor U3 are both connected to the power supply terminal; the A0 pin, A1 pin, A2 pin, and GND pin of the temperature sensor U3 are all grounded; the VDD pin of the humidity sensor U4 is connected to the power supply terminal, and the GND pin of the humidity sensor U4 is grounded.

[0042] Among them, the memory U2 is preferably an EEPROM memory of model AT24C64, the model of the temperature sensor U3 is preferably TMP75AIDR, and the model of the humidity sensor U4 is preferably HDC2080DMBT. The temperature sensor U3 is used to collect the current temperature inside the monitoring box, and the humidity sensor U4 is used to collect humidity. The corresponding temperature and humidity data output by the two sensors are first temporarily stored in the memory U2 to avoid data loss caused by sudden power failure. The CPU U1 reads the currently latest stored temperature and humidity data from the memory U2 through the SCL_EEP signal and the SDA_EEP signal and uploads it to the network management platform for display.

[0043] The resistance values of R4 and R5 are preferably 4.7KΩ, which are pull-up resistors used to avoid incorrect data writing. The capacitance value of C5 is preferably 0.1uF, which is used to filter the voltage on the VCC pin of U2.

[0044] Preferably, the detection module 22 further includes a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8; the sixth resistor R6 is connected between the SCL pin of the memory U2 and the PB6 pin of the CPU, the seventh resistor R7 is connected between the SDA pin of the memory U2 and the PB7 pin of the CPU, and the eighth resistor R8 is connected between the OS pin of the temperature sensor U3 and the power supply terminal.

[0045] Among them, the resistance values of R6 and R7 are preferably 33RΩ, which are used for current limiting to protect the CPU. The resistance value of the eighth resistor R8 is preferably 4.7KΩ, which is used for current limiting to protect the temperature sensor U3.

[0046] As Figure 4As shown, the flash memory module 23 includes a flash memory chip U5, a ninth resistor R9, a tenth resistor R10, and a sixth capacitor C6; the VCC pin of the flash memory chip U5 is connected to one end of the sixth capacitor C6 and the power supply terminal, the other end of the sixth capacitor C6 is grounded, and the SI pin, SCK pin, pin, pin, pin, and SO pin of the flash memory chip U5 are connected to the PB5 pin, PB3 pin, PD3 pin, PD0 pin, PA9 pin, and PB4 pin of the CPU in a one-to-one manner; the GND pin of the flash memory chip U5 is grounded, and the pin of the flash memory chip U5 is also connected to the power supply terminal through the tenth resistor R10, and the pin of the flash memory chip U5 is also connected to the power supply terminal through the ninth resistor R9.

[0047] Among them, the flash memory chip U5 is preferably a flash memory chip of the model W25Q16, which is also used for storing various information data, and performs storage control with the CPU through the WP signal, SPIF_RST# / DIS_RSTCMD signal, and SPI signals (including SPI3_MOSI signal, SPI3_SCK signal, SPI3_NSS signal, and SPI3_MISO signal). C6 is used to filter the VCC pin of U5 to make its power supply more stable. R9 and R10 are pull-up resistors, which are used to keep the connected signals at a high level usually to avoid mis-triggering.

[0048] The wireless circuit 30 is composed of an existing Beidou module and a 4G module. The monitoring circuit 20 is connected to the Beidou module and the 4G module through an RS232 interface (serial communication), and various data signals are transmitted by the RS232 communication bus. In the railway system, this railway video equipment monitoring box can be installed at different positions. The Beidou module detects the current longitude and latitude and transmits them to the CPU through the GPS_SDA signal and GPS_SCL signal. The CPU then transmits the longitude and latitude to the 4G module or the optical fiber switching circuit 40. The 4G module (with a 4G antenna inside) uploads the longitude and latitude wirelessly to the backend network management platform. The network management platform can find the corresponding railway video equipment monitoring box according to the longitude and latitude. The CPU constructs a wireless channel with the 4G module through the RS232 interface, and realizes the information interaction between the local information and the backend network management platform through the wireless channel.

[0049] The optical fiber switching circuit 40 includes a 1 - to - 4 optical - electrical module and an optical fiber power monitoring module, both of which are connected to the CPU. The 1 - to - 4 optical - electrical module, also called a full - gigabit switching module, has a switching chip, 1 gigabit Small Form Pluggable (SFP) optical interface, and 4 RJ45 Ethernet interfaces. The optical interface can be connected to an external optical fiber to send signals to the upper - layer network management platform. Among the 4 RJ45 Ethernet interfaces, 1 is used to connect to the CPU in the control module 21 to build a wired channel, and information interaction between local information and the backend network management platform is achieved through the wired channel. 1 is used to connect to a camera, and the other 2 are reserved.

[0050] The optical fiber power monitoring module is composed of 1 MCU chip and 3 SFP optical modules. On the one hand, the MCU is connected to the CPU through an RS485 interface to upload various data transmitted by the CPU to the network management platform via wire. On the other hand, the MCU is respectively connected to the 3 SFP optical modules through 3 I2C interfaces, reads the optical power inside the Digital Diagnostic Monitoring (DDM) of the SFP optical modules through the I2C bus, and transmits the optical power to the CPU.

[0051] In summary, for the railway video equipment monitoring box provided by the present utility model, the monitoring circuit can detect the temperature and humidity inside the front monitoring box body, realizing the acquisition of local temperature and humidity. It can select to communicate wirelessly with the backend network management platform through the wireless circuit or communicate wired with the network management platform through the optical fiber switching circuit, and remotely upload various obtained data information to the unified network management platform, realizing wired or wireless remote monitoring. The data is comprehensively managed and shared on the network management platform, and the data information is displayed on the network management platform. According to the power status information, the number of lightning strikes, and the temperature and humidity data, it can be known whether the current work is stable and whether there are risks. According to the uploaded longitude and latitude, it is convenient to identify each railway video equipment monitoring box at different positions and conduct global monitoring to avoid missed inspections.

[0052] The above - mentioned embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent substitution on some of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A railway video equipment monitoring box, comprising a monitoring box body, wherein a main board is arranged inside the monitoring box body, and a power supply monitoring and lightning protection circuit for real-time acquisition of power supply status information and lightning strike times, a wireless circuit for collecting the current longitude and latitude, and an optical fiber switching circuit for collecting optical power are arranged on the main board, and it is characterized in that, A monitoring circuit is also provided on the main board, and the monitoring circuit is connected to a power supply monitoring and lightning protection circuit, a wireless circuit, and an optical fiber switching circuit; The monitoring circuit communicates wirelessly with a network management platform at the back end through the wireless circuit and communicates wiredly with the network management platform through the optical fiber switching circuit; The monitoring circuit detects the temperature and humidity inside the front monitoring box and generates corresponding temperature and humidity data, and uploads the power supply status information, the number of lightning strikes, the longitude and latitude, the optical power, and the temperature and humidity data to the network management platform.

2. The railway video equipment monitoring box according to claim 1, characterized in that, The monitoring circuit includes a control module, a detection module, and a flash memory module; the control module is connected to the detection module, the flash memory module, the power supply monitoring and lightning protection circuit, the wireless circuit, and the optical fiber switching circuit; The detection module detects the temperature and humidity inside the current monitoring box and outputs corresponding temperature and humidity data to the control module, The control module transmits the received power supply status information, the number of lightning strikes, the longitude and latitude, the optical power, and the temperature and humidity data to the wireless circuit or the optical fiber switching circuit; and also writes the power supply status information, the number of lightning strikes, the longitude and latitude, the optical power, and the temperature and humidity data into the flash memory module for storage.

3. The railway video equipment monitoring box according to claim 2, wherein, The control module includes a CPU, a first crystal oscillator, a first capacitor, and a second capacitor; the PE2 pin, PE3 pin, PB8 pin, and PB9 pin of the CPU are all connected to the optical fiber switching circuit; The PE4 pin, PE5 pin, NRST pin, PC10 pin, and PC12 pin of the CPU are all connected to the wireless circuit; The PE6 pin, PB15 pin, PD10 pin, PD11 pin, PD12 pin, PD13 pin, PD15 pin, PA13 pin, and PA14 pin of the CPU are all connected to the power supply monitoring and lightning protection circuit; the PC14_OSC32_IN pin of the CPU is connected to one end of the first crystal oscillator and one end of the first capacitor, the PC15_OSC32_OUT pin of the CPU is connected to the other end of the first crystal oscillator and one end of the second capacitor, and the other end of the first capacitor is connected to the other end of the second capacitor and the ground.

4. The railway video equipment monitoring box according to claim 3, characterized in that, The control module further includes a second crystal oscillator, a third capacitor, a fourth capacitor, a first resistor, a second resistor, and a third resistor; The 3rd pin of the second crystal oscillator is connected to one end of the third resistor, one end of the third capacitor, and the OSC_OUT pin of the CPU; the 1st pin of the second crystal oscillator is connected to the other end of the third resistor, one end of the fourth capacitor, and the OSC_IN pin of the CPU; the other ends of the third capacitor and the fourth capacitor, the 2nd pin and the 4th pin of the second crystal oscillator are all grounded; the first resistor is connected between the BOOT0 pin of the CPU and the ground, and the second resistor is connected between the PB2 pin of the CPU and the ground.

5. The railway video equipment monitoring box according to claim 3, characterized in that, The detection module includes a memory, a temperature sensor, a humidity sensor, a fourth resistor, a fifth resistor, and a fifth capacitor; The A0 pin, A1 pin, A2 pin, and GND pin of the memory are all grounded; the VCC pin of the memory is connected to the power supply terminal, one end of the fourth resistor, one end of the fifth resistor, and one end of the fifth capacitor; the WP pin of the memory is connected to the other end of the fifth capacitor and the ground; the SCL pin of the memory is connected to the other end of the fifth resistor, the SCL pin of the temperature sensor, the SCL pin of the humidity sensor, and the PB6 pin of the CPU; The SDA pin of the memory is connected to the other end of the fourth resistor, the SDA pin of the temperature sensor, the SDA pin of the humidity sensor, and the PB7 pin of the CPU; the VCC pin and the OS pin of the temperature sensor are both connected to the power supply terminal; the A0 pin, A1 pin, A2 pin, and GND pin of the temperature sensor are all grounded; the VDD pin of the humidity sensor is connected to the power supply terminal, and the GND pin of the humidity sensor is grounded.

6. The railway video equipment monitoring box according to claim 5, characterized in that, The detection module further includes a sixth resistor, a seventh resistor, and an eighth resistor; The sixth resistor is connected between the SCL pin of the memory and the PB6 pin of the CPU, the seventh resistor is connected between the SDA pin of the memory and the PB7 pin of the CPU, and the eighth resistor is connected between the OS pin of the temperature sensor and the power supply terminal.

7. The railway video equipment monitoring box according to claim 3, wherein, The flash memory module includes a flash memory chip, a ninth resistor, a tenth resistor, and a sixth capacitor; The VCC pin of the flash memory chip is connected to one end of the sixth capacitor and the power supply terminal, the other end of the sixth capacitor is grounded, and the SI pin, SCK pin, CS pin, WP pin, HOLD pin, and SO pin of the flash memory chip are connected one-to-one with the PB5 pin, PB3 pin, PD3 pin, PD0 pin, PA9 pin, and PB4 pin of the CPU; the GND pin of the flash memory chip is grounded, the WP pin of the flash memory chip is further connected to the power supply terminal through the tenth resistor, and the HOLD pin of the flash memory chip is further connected to the power supply terminal through the ninth resistor.

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