Space-time positioning synchronization device and system

Abstract

The utility model provides a time-space positioning synchronization device and system, the synchronization device comprises a case outer cover, and a processor module, a power supply module, a counting card module, an expansion network card module, a GNSS module, a hard disk expansion module and a multifunctional serial port module which are all arranged in the case outer cover, the expansion network card module receives track label information identified by an RFID reader; the counting card module counts train mileage information according to the received square wave pulse signal, the GNSS module determines the longitude, latitude, time and speed of a train through space-time positioning, the processor module corrects the mileage information based on the track label information and the counted mileage information, and then performs data fusion in combination with the longitude, latitude, time and speed. And the fused data is transmitted to the multifunctional serial port module, and the multifunctional serial port module synchronously sends the fused data to each detection subsystem, so that accurate positioning information is provided for each detection subsystem, information such as speed, time and mileage can be synchronously acquired in real time, and daily detection tasks and requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of track detection, in particular to a time-space positioning synchronization device and system. Background Art

[0002] With the rapid development of my country's high-speed railways, the number of new high-speed rail lines and trains continues to increase annually. While making travel more convenient and efficient, this has also significantly increased the load-bearing capacity of high-speed rail tracks. One of the most pressing challenges facing railway inspection departments is how to more quickly, comprehensively, and in real time monitor the status of the tracks, conduct timely maintenance, and ensure the safe operation of every train. To ensure the safe operation of high-speed railways, the railway system has implemented high-speed inspection trains to strengthen routine inspections of railway infrastructure, identify defects, and guide railway maintenance and repair to ensure smooth, safe, and efficient operation. Comprehensive, multi-disciplinary inspections require simultaneous data acquisition and pulse synchronization across multiple disciplines.

[0003] The existing inspection solution for railway infrastructure is to connect multiple inspection subsystems or devices. Each inspection subsystem or device works independently, collects the required data through its own components such as laser cameras, and independently calculates and processes the data based on its own collection time to complete inspections such as track inspection, track geometry inspection, and track wear inspection. This leads to problems such as inconsistent collection time, inconsistent collection speed, and inconsistent accumulated mileage in each inspection subsystem, resulting in asynchronous and inaccurate collection of parameter information, which affects inspection efficiency.

[0004] Based on the above basic market needs, there is an urgent need for a device that can synchronize speed, time, mileage and other information in real time, provide accurate positioning information to each detection subsystem, and have high positioning accuracy and be easy to install and maintain, so as to achieve accurate data collection, improve detection efficiency, and meet daily detection tasks and needs. Utility Model Content

[0005] To address the issue of asynchronous and inaccurate parameter information collection by existing detection subsystems, this utility model provides a spatiotemporal positioning synchronization device that can synchronously collect speed, time, mileage, and other information in real time, providing accurate positioning information to each detection subsystem. This device can operate stably in harsh environments, meeting daily detection tasks and needs. It also offers advantages such as high detection efficiency, flexible solution customization, and rapid module replacement or maintenance. This utility model also relates to a spatiotemporal positioning synchronization system.

[0006] The technical solution of the utility model is as follows:

[0007] A spatiotemporal positioning synchronization device, characterized in that it includes a chassis cover and a processor module, a power supply module, a counter card module, an extended network card module, a GNSS module, a hard disk extension module, and a multi-function serial port module, all of which are within the chassis cover, wherein the power supply module is respectively connected to the processor module, the counter card module, the extended network card module, the GNSS module, the hard disk extension module, and the multi-function serial port module, and the counter card module, the extended network card module, the GNSS module, the hard disk extension module, and the multi-function serial port module are all connected to the processor module;

[0008] The extended network card module is provided with an extended network card interface on the chassis cover, and the extended network card module is connected to an external RFID reader through the extended network card interface and receives the track tag information identified by the RFID reader and transmits it to the processor module; the counting card module is provided with a pulse signal interface on the chassis cover and is connected to an external square wave generator and multi-channel output device through the pulse signal interface, and the counting card module receives the square wave pulse signal output by the square wave generator and multi-channel output device through the pulse signal interface and then counts the train mileage information and transmits the counted mileage information to the processor module; the GNSS module performs spatiotemporal positioning of the train on the track, and determines the longitude and latitude, time, speed, and other parameters of the train. The processor module receives track label information, counted mileage information, longitude and latitude, time, and speed, and corrects the mileage information based on the track label information and the counted mileage information. The corrected mileage information is then combined with the longitude and latitude, time, and speed for data fusion. The fused data is stored in the hard disk expansion module and transmitted to the multi-function serial port module. The multi-function serial port module is provided with an RS232 / 422 serial port on the chassis cover and is connected to external detection subsystems through the RS232 / 422 serial port. The multi-function serial port module synchronously sends the fused data to each detection subsystem through the RS232 / 422 serial port.

[0009] Preferably, a reflective memory module is further included, wherein the reflective memory module is connected to the power module and the processor module respectively, and the reflective memory module is externally connected to each detection subsystem.

[0010] Preferably, it also includes a switching module, which is connected to the multi-functional serial port module. The switching module is connected to each detection subsystem through a network switch. The multi-functional serial port module sends the fused data to the switching module and then sends the fused data synchronously to each detection subsystem through the network switch.

[0011] Preferably, the spatiotemporal positioning synchronization device has a high-speed data synchronization network externally, and supports several types of data real-time synchronization networks such as serial optical fiber network, Ethernet, and reflective memory network.

[0012] Preferably, the hard disk expansion module adopts a quick-release lock structure.

[0013] Preferably, the extended network card module is also connected to several cameras.

[0014] Preferably, the detection subsystems connected to the multifunctional serial port module include a track inspection subsystem, a track geometry detection subsystem, a track wave wear detection subsystem and a limit detection subsystem, all of which work independently.

[0015] A space-time positioning synchronization system, characterized in that it includes the above-mentioned space-time positioning synchronization device, and also includes a square wave generating and multi-channel output device connected to the space-time positioning synchronization device, the square wave generating and multi-channel output device includes a photoelectric encoder and a distribution signal board, the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board, the distribution signal board is provided with a multi-channel signal output interface, the distribution signal board outputs the received square wave pulse signal to the counting card module of the space-time positioning synchronization device through the multi-channel signal output interface; the distribution signal board also outputs the square wave pulse signal to each detection subsystem through the multi-channel signal output interface.

[0016] Preferably, the square wave generating and multi-channel output device also includes an analog signal board and a signal switching switch. The analog signal board and the photoelectric encoder are both connected to the distribution signal board through the signal switching switch. When detecting vehicle driving, the signal switching switch switches to the photoelectric encoder, and the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board; when detecting vehicle parking debugging, the signal switching switch switches to the analog signal board, and the analog signal board simulates the square wave pulse signal output by the photoelectric encoder and then outputs a square wave analog signal and transmits it to the distribution signal board; the distribution signal board outputs the received square wave pulse signal or square wave analog signal to the time and space positioning synchronization device and each detection subsystem through the multi-channel signal output interface.

[0017] Preferably, the photoelectric encoder in the square wave generating and multi-channel output device includes a main photoelectric encoder and a backup photoelectric encoder, and the main photoelectric encoder and the backup photoelectric encoder are both connected to the distribution signal board through the signal switching switch. When the vehicle is detected to be running and the main photoelectric encoder is normal, the signal switching switch switches to the main photoelectric encoder, and the main photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board; when the vehicle is detected to be running and the main photoelectric encoder fails, the signal switching switch switches to the backup photoelectric encoder, and the backup photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board.

[0018] The technical effects of the utility model are as follows:

[0019] The utility model relates to a time-space positioning synchronization device, which adopts a modular design and is mainly composed of a chassis cover and a multi-function module (power supply module, processor module, expansion network card module, counting card module, GNSS module, hard disk expansion module, multi-function serial port module and other hardware modules). The host function can be enhanced by expanding the network card module through expansion equipment, and can be connected to an external RFID (radio frequency identification) reader to receive track tag information identified by the RFID reader and transmit it to the processor module; the counting card module is connected to an external square wave generation and multi-channel output device, and after receiving the square wave pulse signal, the train mileage information is counted and the counted mileage information is transmitted to the processor module; the train on the track is positioned in time and space by the GNSS module, and the longitude and latitude, time and speed of the train are determined and transmitted to the processor module; multiple data streams are converged to the processor module, which can also be called a system module, which receives track tag information, counted mileage information, longitude and latitude, time and speed, and based on the track tag information and The mileage information is corrected based on the counted mileage information, and then the corrected mileage information is combined with the latitude and longitude, time, and speed for data fusion. The fused data is stored in the hard disk expansion module and transmitted to the multi-function serial port module. The multi-function serial port module is connected to the external detection subsystems (track inspection subsystem, track geometry detection subsystem, track wave wear detection subsystem, etc.). The multi-function serial port module sends the fused data synchronously to each detection subsystem through its own RS232 / 422 serial port, thereby providing each detection subsystem with accurate spatiotemporal positioning information of fused mileage, position, time, and speed, solving the problem of asynchronous and inaccurate parameter information collection of each detection subsystem. It is suitable for mileage positioning to provide GNSS precise positioning information on site, output line, mileage, time and speed mileage, and has better positioning accuracy than the existing technology. It is combined with the connected RFID reader to identify the track tag information to correct the mileage information, realize real-time positioning, and further improve the positioning accuracy. A backplane can be used inside the chassis cover to connect the internal modules, which plays a role in power distribution and data interaction between modules. The modular design of several multi-functional modules inside the chassis cover allows for flexible solution customization, rapid module replacement or maintenance operations. The overall weight does not exceed 11KG, and the standard 3U rack-mounted structure is convenient for installation and maintenance. The chassis cover can be made of aluminum alloy as an external protective box, which is light in weight and has high structural strength. The spatiotemporal positioning synchronization device can work stably in harsh environments, meet daily detection tasks and needs, and improve the detection efficiency of each detection subsystem.

[0020] The spatiotemporal positioning synchronization device of the present invention preferably also includes a reflective memory module, which is connected to each detection subsystem externally. The reflective memory module is a communication device used for high-performance computing and real-time data sharing. Under the action of the processor module, the reflective memory module supports the reflective memory card and allows each detection subsystem to exchange, transmit, copy and communicate data on the basis of shared memory, thereby realizing real-time data sharing quickly and efficiently. It has the advantages of real-time data sharing, low-latency communication, high-bandwidth transmission, data consistency and synchronization, and avoidance of data conflicts and errors.

[0021] The space-time positioning synchronization device of the present invention preferably also includes a switching module, which is connected to the multi-functional serial port module to exchange information with each other. The switching module is externally connected to each detection subsystem through a network switch. The multi-functional serial port module sends the fused data to the switching module and then synchronously sends the fused data to each detection subsystem through the network switch. The switching module expands the number of ports and provides additional ports or functions, so that the space-time positioning synchronization device has greater flexibility and can be configured and upgraded according to needs. Combined with the network switch, the received fused data is forwarded to the correct destination port (each detection subsystem), realizing efficient data communication, reducing network conflicts, improving data transmission speed and efficiency, and improving network security and reliability, preventing broadcast storms and loops.

[0022] The extended network card module of the spatiotemporal positioning synchronization device of the present invention can preferably also be connected to several cameras. Specifically, the industrial interface (extended network card interface) can be used to connect different cameras. Under the action of the processor module, the data streams and power supplies of multiple cameras can be synchronously controlled, and the task of synchronously collecting environmental video recordings by multiple cameras can be performed. Through the video ODS, mileage information and various detection information are superimposed on the environmental video to form new video information and store it in the hard disk expansion module (randomly removable hard disk), so as to realize subsequent new video analysis and retrieval.

[0023] The present invention also relates to a time-space positioning synchronization system, which includes, in addition to the above-mentioned time-space positioning synchronization device of the present invention, a square wave generating and multi-channel output device, and the square wave generating and multi-channel output device includes a photoelectric encoder and a distribution signal board. The photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board. The distribution signal board is provided with a multi-channel signal output interface. The distribution signal board outputs the received square wave pulse signal to the counting card module of the time-space positioning synchronization device through the multi-channel signal output interface, and then the counting card module counts the train mileage information according to the received square wave pulse signal; the distribution signal board also outputs the square wave pulse signal to each detection subsystem through the multi-channel signal output interface to provide a speed pulse for each detection subsystem. By combining the square wave generation and multi-channel output device with the time-space positioning synchronization device of specific modular design, it is possible to generate square wave pulse signals for the time-space positioning synchronization device and provide speed pulses for each detection subsystem. Combined with the tag information recognition, mileage information counting, GNSS time-space positioning and other technologies of the multi-functional module, it can achieve real-time synchronization of mileage, GNSS positioning, speed pulses and time among multiple detection subsystems. It can synchronously collect speed, time, mileage and other information in real time, and provide accurate positioning information for each detection subsystem. It has the advantages of high detection efficiency, flexible solution customization, and rapid module replacement or maintenance operations.

[0024] The preferred square wave generation and multi-channel output device of the time-space positioning synchronization system of the present invention also includes an analog signal board and a signal switching switch. When detecting vehicle driving, the signal switching switch switches to the photoelectric encoder, and the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board; when detecting vehicle parking and debugging, the signal switching switch switches to the analog signal board, and the analog signal board simulates the square wave pulse signal output by the photoelectric encoder and then outputs a square wave analog signal and transmits it to the distribution signal board; the distribution signal board outputs the received square wave pulse signal or square wave analog signal to the time-space positioning synchronization device and each detection subsystem through the multi-channel signal output interface. This allows the system to be debugged and simulated normally in the parking state, completely avoiding the problem of the existing technology that cannot be debugged due to the inability to obtain signals when detecting vehicle parking. Therefore, when detecting normal vehicle driving, the time-space positioning synchronization system outputs the square wave pulse signal - a digital signal - transmitted by the actual photoelectric encoder through the multi-channel signal output interface of the distribution signal board, which can provide a speed pulse for the LVDS signal. When detecting vehicle parking and debugging, the square wave simulation signal simulated by the analog signal board is output through the multi-channel signal output interface of the distribution signal board - still a digital signal. Both the square wave signal and the square wave simulation signal are digital signals for square wave generation and multi-channel output required for actual detection. In other words, the generation of square waves and their multi-channel output are realized in various states of the detection vehicle, which improves the work efficiency of railway infrastructure detection and provides a guarantee for railway operation safety detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main assembly structure of the time-space positioning synchronization device of the present utility model.

[0026] Figure 2 This is a schematic diagram of the modular structure inside the time-space positioning synchronization device of the present invention.

[0027] Figure 3 This is a structural diagram of the connection between modules of the spatiotemporal positioning synchronization device of the present invention and the connection with external equipment.

[0028] Figure 4 This is a working principle diagram of the space-time positioning synchronization system of the utility model.

[0029] Figure 5 This is a schematic diagram of the preferred structure of the space-time positioning synchronization system of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be described below with reference to the accompanying drawings.

[0031] The utility model relates to a time-space positioning synchronization device, such as Figure 1The modular design is shown, mainly composed of a chassis cover and modules inside the chassis cover. The modules can be connected by industrial-grade connectors to form a multi-functional module, including the following modules inside the chassis cover: Figure 2 The processor module, power module, counter card module, extended network card module, GNSS module, hard disk extension module, multi-function serial port module and preferably reflective memory module and switch module shown are hardware module components, which can be understood as processor circuit module (core chip circuit for data control processing), power circuit, counter card, extended network card, GNSS locator, hard disk extension board, multi-function serial port, reflective memory card, switch chip. The structure of the connection between each module and the connection with external devices is as shown in FIG. Figure 3 As shown, the power supply module (not shown in the figure) is respectively connected to the processor module, the counting card module, the extended network card module, the GNSS module, the reflective memory module, the hard disk extension module and the multi-function serial port module, and the counting card module, the extended network card module, the GNSS module, the reflective memory module, the hard disk extension module and the multi-function serial port module are all connected to the processor module (also called the system module).

[0032] The extended network card module is provided with an extended network card interface on the chassis cover, which is used to connect to the external RFID reader through the extended network card interface and receive the track tag information identified by the RFID reader and transmit it to the processor module; the counting card module is provided with a pulse signal interface on the chassis cover for connecting to the external square wave generation and multi-channel output device. The counting card module mainly includes a counting card, which receives the square wave pulse signal output by the square wave generation and multi-channel output device through the pulse signal interface and then counts the train mileage information, and transmits the counted mileage information to the processor module; the GNSS module is used to locate the train in time and space on the track, determine the longitude and latitude, time, speed, etc. of the train and transmit them to the processor module; the processor module receives the track tag information, counted mileage information, longitude and latitude, time, speed, etc. gathered from various data streams, and The mileage information is corrected based on the track label information and the counted mileage information (i.e., the actual data is corrected by the benchmark data), and then the corrected mileage information is combined with the latitude and longitude, time, and speed for data fusion (i.e., data integration processing). The fused data is stored in the hard disk expansion module and transmitted to the multi-function serial port module; the multi-function serial port module is provided with an RS232 / 422 serial port on the chassis cover, and is connected to various external detection subsystems (all independently working track inspection subsystems, track geometry detection subsystems, track wave wear detection subsystems and limit detection subsystems, etc.) through the RS232 / 422 serial port. The multi-function serial port module synchronously sends the fused data to each detection subsystem (detection subsystem 1, detection subsystem 2, detection subsystem 3...) through the RS232 / 422 serial port.

[0033] Figure 3 The reflective memory module shown is a preferred design. It is connected to the power module and processor module, respectively, and externally connects to each detection subsystem. It primarily comprises a physical reflective memory card. Under the control of the processor module, the reflective memory module, based on the reflective memory card, supports data exchange and communication between the detection subsystems based on shared memory, enabling real-time data sharing. This provides advantages such as real-time data sharing, low-latency communication, high-bandwidth transmission, data consistency and synchronization, and avoidance of data conflicts and errors.

[0034] Figure 3 The switching module shown is also a module of optimal design. The switching module is connected to the multi-functional serial port module to exchange information with each other. The switching module is connected to each detection subsystem through a network switch. The multi-functional serial port module sends the fused data to the switching module and then sends the fused data synchronously to each detection subsystem through the network switch. The switching module is a hardware device, usually a physical component inserted into a multi-slot network device. The switching module expands the number of ports and provides additional ports or functions, so that the time and space positioning synchronization device has greater flexibility and can be configured and upgraded according to needs. Combined with the network switch, the received fused data is forwarded to the correct destination port (each detection subsystem), realizing efficient data communication, reducing network conflicts, improving data transmission speed and efficiency, and improving the security and reliability of the network to prevent broadcast storms and loops.

[0035] Furthermore, if Figure 3 In the preferred structure shown, the extended network card module can also be connected to several cameras. Under the action of the processor module, the data flow and power supply of each camera are synchronously controlled, and each camera performs the task of synchronously collecting environmental video. Through the video ODS, the mileage information is superimposed on the environmental video to form new video information stored in the hard disk expansion module. The processor module combines the corrected mileage information with the latitude and longitude, time, speed and new video information for data fusion. The fused data is stored in the hard disk expansion module (preferably a randomly removable hard disk) and transmitted to the multi-function serial port module to realize subsequent new video analysis and retrieval.

[0036] The chassis cover of the spatiotemporal positioning synchronization device of the present invention can be made of aluminum alloy as an external protective box. The overall equipment has the characteristics of light weight and low power consumption, high structural strength, firmness and not easy to deform, strong compressive bearing capacity, and effective protection of internal modules. It is particularly suitable for various types of inspection vehicle platform applications and can be lifted up and down by only one person. The equipment is easy and convenient to install in the cabinet, and the wiring method and display function are convenient for maintenance and use on the front panel. Industrial-grade connectors are preferably used between the modules in the chassis cover, which can work stably in harsh environments. Preferably, the hard disk expansion module adopts a quick-release locking structure to facilitate data interaction and protect data security. Furthermore, a backplane can be used inside the chassis cover to connect the internal modules, which plays a role in power distribution and data interaction between modules. The equipment wiring is connected to the aviation plug on the rear panel of the equipment, which can avoid the aging problem that is prone to occur due to the large number of internal wiring in the equipment. Through the modular design of several multi-functional modules inside the chassis cover, flexible solution customization, rapid module replacement or maintenance operations can be carried out. The overall weight does not exceed 11KG, and the standard 3U rack-mounted structure is convenient for installation and maintenance. The spatiotemporal positioning synchronization device can work stably in harsh environments and is compatible with a variety of synchronization networks. It has a high-speed data synchronization network externally and can support serial fiber optic networks, Ethernet, reflective memory networks and other real-time data synchronization networks, realizing real-time synchronization of mileage, GNSS positioning, speed pulses and time between various detection subsystems, meeting daily detection tasks and needs, and improving the detection efficiency of each detection subsystem.

[0037] The present invention also relates to a time-space positioning synchronization system, such as Figure 4 As shown, in addition to the above-mentioned time-space positioning synchronization device of the utility model, it also includes a square wave generating and multi-channel output device connected to the time-space positioning synchronization device, the square wave generating and multi-channel output device includes a photoelectric encoder and a distribution signal board, the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board, the distribution signal board is provided with a multi-channel signal output interface, the distribution signal board outputs the received square wave pulse signal (such as LVDS signal) to the counting card module of the time-space positioning synchronization device through the multi-channel signal output interface, and then the counting card module counts the train mileage information according to the received square wave pulse signal; the distribution signal board also outputs the square wave pulse signal (such as LVDS signal) to each detection subsystem through the multi-channel signal output interface to provide a speed pulse for each detection subsystem.

[0038] The space-time positioning synchronization system works together through a square wave generation and multi-channel output device combined with a space-time positioning synchronization device with a specific modular design. It can generate square wave pulse signals for the space-time positioning synchronization device and provide speed pulses for each detection subsystem. Combined with the tag information recognition, mileage information counting, GNSS space-time positioning and other technologies of the multi-functional module, it can achieve real-time synchronization of mileage, GNSS positioning, speed pulses and time among multiple detection subsystems. It can synchronously collect speed, time, mileage and other information in real time, and provide accurate positioning information to each detection subsystem. It has the advantages of high detection efficiency, flexible solution customization, and rapid module replacement or maintenance operations.

[0039] Figure 5 This is a schematic diagram of the preferred structure of the spatiotemporal positioning synchronization system of the present invention. The square wave generation and multi-channel output device includes a photoelectric encoder, an analog signal board, a signal switching switch, and a distribution signal board. The photoelectric encoder and the analog signal board are both connected to the distribution signal board via the signal switching switch. When detecting vehicle movement, the signal switching switch switches to the photoelectric encoder, which generates a square wave pulse signal and transmits it to the distribution signal board. When detecting vehicle parking and debugging, the signal switching switch switches to the analog signal board, which simulates the square wave pulse signal output by the photoelectric encoder and then outputs a square wave analog signal, which is then transmitted to the distribution signal board. The distribution signal board outputs the received square wave pulse signal or square wave analog signal to the spatiotemporal positioning synchronization device and each detection subsystem through the multi-channel signal output interface. This allows the system to be debugged and simulated normally in the parking state, completely avoiding the problem of the existing technology that cannot be debugged due to the inability to obtain signals when detecting vehicle parking. Therefore, when detecting normal vehicle driving, the time-space positioning synchronization system outputs the square wave pulse signal - a digital signal - transmitted by the actual photoelectric encoder through the multi-channel signal output interface of the distribution signal board, which can provide a speed pulse for the LVDS signal. When detecting vehicle parking and debugging, the square wave simulation signal simulated by the analog signal board is output through the multi-channel signal output interface of the distribution signal board - still a digital signal. Both the square wave signal and the square wave simulation signal are digital signals for square wave generation and multi-channel output required for actual detection. In other words, the generation of square waves and their multi-channel output are realized in various states of the detection vehicle, which improves the work efficiency of railway infrastructure detection and provides a guarantee for railway operation safety detection.

[0040] Furthermore, if Figure 5As shown, the photoelectric encoder in the square wave generation and multi-channel output device preferably includes a main photoelectric encoder and a backup photoelectric encoder, and the main photoelectric encoder and the backup photoelectric encoder are both connected to the distribution signal board through the signal switching switch. When the vehicle is detected to be running and the main photoelectric encoder is normal, the signal switching switch switches to the main photoelectric encoder, and the main photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board; when the vehicle is detected to be running and the main photoelectric encoder fails, the signal switching switch switches to the backup photoelectric encoder, and the backup photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board. The main photoelectric encoder and the backup photoelectric encoder are both components that generate square wave pulse signals and are connected to the distribution signal board through the signal switching switch. When the main photoelectric encoder fails, the signal switching switch can be used to switch to the backup photoelectric encoder, thereby achieving uninterrupted transmission of the square wave pulse signal, thereby improving the stability of the square wave pulse signal transmission.

[0041] It should be noted that the specific embodiments described above can enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although this specification has described the present invention in detail with reference to the drawings and embodiments, those skilled in the art should understand that the present invention can still be modified or replaced with equivalents. In short, all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the patent for the present invention.

Claims

1. A time-space positioning synchronization device, characterized in that: The system comprises a chassis cover and a processor module, a power supply module, a counter card module, an extended network card module, a GNSS module, a hard disk extension module, and a multi-function serial port module, all of which are inside the chassis cover. The power supply module is connected to the processor module, the counter card module, the extended network card module, the GNSS module, the hard disk extension module, and the multi-function serial port module, respectively. The counter card module, the extended network card module, the GNSS module, the hard disk extension module, and the multi-function serial port module are all connected to the processor module. The extended network card module is provided with an extended network card interface on the chassis cover, and the extended network card module is connected to an external RFID reader through the extended network card interface and receives the track tag information identified by the RFID reader and transmits it to the processor module; The counting card module is provided with a pulse signal interface on the chassis outer cover and is connected to an external square wave generating and multi-channel output device through the pulse signal interface. The counting card module receives the square wave pulse signal output by the square wave generating and multi-channel output device through the pulse signal interface, counts the train mileage information, and transmits the counted mileage information to the processor module; The GNSS module locates the train on the track in time and space, determines the longitude and latitude, time, and speed of the train, and transmits the results to the processor module; The processor module receives track tag information, counted mileage information, longitude and latitude, time, and speed, and corrects the mileage information based on the track tag information and the counted mileage information. The processor module then fuses the corrected mileage information with the longitude and latitude, time, and speed. The fused data is stored in the hard disk expansion module and transmitted to the multi-function serial port module. The multifunctional serial port module is provided with an RS232 / 422 serial port on the chassis cover and is connected to each external detection subsystem via the RS232 / 422 serial port. The multifunctional serial port module synchronously sends the fused data to each detection subsystem via the RS232 / 422 serial port.

2. The time-space positioning synchronization device according to claim 1, characterized in that: It also includes a reflective memory module, which is connected to the power module and the processor module respectively, and is externally connected to each detection subsystem.

3. The time-space positioning synchronization device according to claim 1, characterized in that: It also includes a switching module, which is connected to the multi-functional serial port module. The switching module is connected to each detection subsystem through a network switch. The multi-functional serial port module sends the fused data to the switching module and then sends the fused data synchronously to each detection subsystem through the network switch.

4. The time-space positioning synchronization device according to any one of claims 1 to 3, characterized in that: The time-space positioning synchronization device has a high-speed data synchronization network externally, and supports several types of data real-time synchronization networks such as serial optical fiber network, Ethernet, and reflective memory network.

5. The time-space positioning synchronization device according to any one of claims 1 to 3, characterized in that: The hard disk expansion module adopts a quick-release lock structure.

6. The time-space positioning synchronization device according to any one of claims 1 to 3, characterized in that: The extended network card module is also connected to several cameras.

7. The time-space positioning synchronization device according to any one of claims 1 to 3, characterized in that: The detection subsystems connected to the multifunctional serial port module include a track inspection subsystem, a track geometry detection subsystem, a track wave wear detection subsystem and a clearance detection subsystem, all of which work independently.

8. A spatiotemporal positioning synchronization system, characterized in that: The invention comprises the spatiotemporal positioning synchronization device according to any one of claims 1 to 7, and further comprises a square wave generating and multi-channel output device connected to the spatiotemporal positioning synchronization device, the square wave generating and multi-channel output device comprises a photoelectric encoder and a distribution signal board, the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board, the distribution signal board is provided with a multi-channel signal output interface, the distribution signal board outputs the received square wave pulse signal to the counting card module of the spatiotemporal positioning synchronization device through the multi-channel signal output interface; the distribution signal board also outputs the square wave pulse signal to each detection subsystem through the multi-channel signal output interface.

9. The spatiotemporal positioning synchronization system according to claim 8, characterized in that: The square wave generating and multi-channel output device further includes an analog signal board and a signal switching switch. The analog signal board and the photoelectric encoder are both connected to the distribution signal board via the signal switching switch. When detecting vehicle movement, the signal switching switch switches to the photoelectric encoder, and the photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board. When detecting the parking commissioning of the vehicle, the signal switching switch is switched to the analog signal board, and the analog signal board simulates the square wave pulse signal output by the photoelectric encoder and then outputs a square wave analog signal which is then transmitted to the distribution signal board; The distribution signal board outputs the received square wave pulse signal or square wave analog signal to the spatiotemporal positioning synchronization device and each detection subsystem through the multi-channel signal output interface.

10. The spatiotemporal positioning synchronization system according to claim 9, characterized in that: The photoelectric encoder in the square wave generating and multi-channel output device includes a main photoelectric encoder and a backup photoelectric encoder. Both the main photoelectric encoder and the backup photoelectric encoder are connected to the distribution signal board through the signal switching switch. When it is detected that the vehicle is moving and the main photoelectric encoder is normal, the signal switching switch switches to the main photoelectric encoder, and the main photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board. When it is detected that the vehicle is running and the main photoelectric encoder fails, the signal switching switch switches to the backup photoelectric encoder, and the backup photoelectric encoder generates a square wave pulse signal and transmits it to the distribution signal board.

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