Railway section optical fiber network signal control device and system

Abstract

The present invention provides a railway section optical fiber network signal control device and system, including a field control device and an optical control box, the field control device includes a switching device and a redundant first host and a second host, the first host inputs a first control signal, and when the switching device switches, obtains the second control signal of the second host, compares the first control signal with the second control signal, and if the comparison result matches, sends the first control signal to the optical control box, the operation process of the second host is the same as the first host, and the optical control box adopts a fail-safe mode and outputs a driving signal according to the first control signal or the second control signal. The present invention can improve the real-time performance of the rail transit signal control system, shorten the action time of the execution layer from seconds to milliseconds, significantly improve the control and response speed of the system, thereby improving transportation efficiency and safety, and reducing the use of copper cables, energy consumption, and engineering costs.

Description

Technical Field

[0001] The present invention relates to the technical field of signal control, and in particular to a railway section optical fiber network signal control device and system. Background Art

[0002] Railway station signal control systems have mainly gone through three development stages: mechanical interlocking control, 6502 electrical centralized interlocking control, and computer interlocking control. Currently, many computer interlocking control systems in use use computers to implement interlocking relationship calculations and use safety relays to control and collect the status of basic equipment. In fact, it is a computer interlocking + relay execution system, and a fully electronic fault-tolerant safety interlocking control system has not yet been realized.

[0003] The traditional railway signal control system is a system that uses a computer interlocking system + a safety relay combination to realize railway signal control. The computer interlocking system realizes the operation of logical relationships and is controlled by a computer; the safety relay combination is the execution circuit of the system, including turnout starting circuits, signal machine lighting circuits, track circuits, various contact circuits and other mature relay circuits.

[0004] The main circuit of the traditional railway signal equipment execution circuit relies on a real loop line (copper cable) to connect the signal tower relay combination contacts and the signal equipment on site. Due to the influence of cable impedance and line capacitance, the maximum connection distance is generally 10km, which can only meet the distance between communication base stations of 10 to 18km.

[0005] Traditional systems involve a lot of manual wiring, so there is still the risk of "sealed wiring". The relay part needs to be regularly maintained and inspected, which brings great difficulties to subsequent maintenance. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a railway section optical fiber network signal control device and system to improve the real-time performance of the rail transit signal control system, shorten the action time of the execution layer from seconds to milliseconds, significantly improve the control and response speed of the system, thereby improving transportation efficiency and safety, and reducing the use of copper cables, reducing energy consumption, and reducing project costs.

[0007] In a first aspect, an embodiment of the present invention provides a railway section optical fiber network signal control device, which includes: a field control device and an optical control box connected via a passive optical network, the field control device including a switching device and two sets of redundant first host and second host connected via the switching device;

[0008] The first host is used to input a first control signal, and when the switching device is switched, obtain a second control signal of the second host, compare the first control signal with the second control signal, and send the first control signal to the light control box if the comparison results match;

[0009] The second host is used to input a second control signal, and when the switching device is switched, obtain the first control signal of the first host, compare the first control signal with the second control signal, and send the second control signal to the light control box if the comparison results match;

[0010] The light control box is used to adopt a fail-safe mode and output a driving signal according to the first control signal or the second control signal.

[0011] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation of the first aspect, wherein the first host includes a redundant central processing unit CPU operation system and a redundant communication system connected in sequence;

[0012] The redundant CPU operation system is used to input the first control signal, and when the switching device switches, obtain the second control signal, compare the first control signal with the second control signal, and if the comparison results match, the redundant communication system sends the first control signal or the second control signal to the optical control box through the passive optical network.

[0013] In combination with the first possible implementation manner of the first aspect, the embodiment of the present invention provides a second possible implementation manner of the first aspect, wherein the first host further includes a watchdog system, the watchdog system is connected to the redundant CPU operation system, and the redundant CPU operation system includes a first CPU and a second CPU;

[0014] The watchdog system is used to monitor the working status of the first CPU and the second CPU. If the working status of the first CPU is abnormal, the second CPU will work, and generate first alarm information according to the working status of the first CPU;

[0015] or,

[0016] If the working state of the second CPU is abnormal, the first CPU will work, and the second alarm information will be generated according to the working state of the second CPU.

[0017] In combination with the second possible implementation of the first aspect, the embodiment of the present invention provides a third possible implementation of the first aspect, wherein the watchdog system is further connected to the redundant communication system, and the redundant communication system includes a first communication interface COM and a second COM;

[0018] The watchdog system is used to monitor the working status of the first COM and the second COM. If the working status of the first COM is abnormal, the second COM will work, and generate third alarm information according to the working status of the first COM;

[0019] or,

[0020] If the working state of the second COM is abnormal, the first COM will work, and fourth alarm information will be generated according to the working state of the second COM.

[0021] In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the fail-safe mode includes a combined fail-safe mode, and the light control box adopts a two-out-of-two architecture based on the combined fail-safe mode, including a redundant power supply unit, a redundant CPU unit, a redundant communication unit, a watchdog unit and a switch output unit.

[0022] In combination with the fourth possible implementation of the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the fail-safe mode also includes a reactive fail-safe mode, and the redundant CPU unit operates in a fixed operating cycle based on the reactive fail-safe mode, and the fixed operating cycle includes a self-check phase and an output phase.

[0023] In combination with the fifth possible implementation manner of the first aspect, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the fail-safe mode further includes an intrinsic fail-safe mode;

[0024] During the self-checking stage, the redundant CPU unit outputs a state dynamic pulse signal to the watchdog unit, so that the watchdog unit monitors the operating state of the redundant CPU unit according to the state dynamic pulse signal;

[0025] During the output stage, the redundant CPU unit outputs a driving dynamic pulse signal to the switch output unit according to the first control signal or the second control signal, so that the switch output unit adopts the inherent fault safety mode and generates and outputs the driving signal according to the driving dynamic pulse signal.

[0026] In combination with the sixth possible implementation of the first aspect, the embodiment of the present invention provides a seventh possible implementation of the first aspect, wherein the redundant CPU unit includes a third CPU and a fourth CPU, and the driving dynamic pulse signal includes a first pulse signal and a second pulse signal;

[0027] The third CPU and the fourth CPU are used to output the first pulse signal and the second pulse signal to the switch output unit according to the first control signal or the second control signal;

[0028] The switch output unit is used to compare the first pulse signal with the second pulse signal, and generate and output the drive signal when the comparison results match.

[0029] In combination with the first aspect, the embodiment of the present invention provides an eighth possible implementation of the first aspect, wherein an RSSP-I type security protocol is used between the field control device and the light control box.

[0030] In a second aspect, an embodiment of the present invention further provides a railway section optical fiber network signal control system, which includes a railway section optical fiber network signal control device as described in any one of the above items, and also includes a plurality of monitoring machines and a plurality of signal devices;

[0031] The monitoring machine is connected to the field control device in the railway section optical fiber network signal control device via industrial Ethernet, and is used to perform fault monitoring on the field control device;

[0032] The signal device is connected to the optical control box in the railway section optical fiber network signal control device, and is used to execute commands according to the driving signal of the optical control box.

[0033] The embodiments of the present invention bring the following beneficial effects: the railway section optical fiber network signal control device and system provided by the present invention include a field control device and an optical control box connected through a passive optical network, the field control device includes a switching device and two sets of redundant first host and second host connected through the switching device, the first host is used to input a first control signal, and when the switching device is switched, obtains the second control signal of the second host, compares the first control signal with the second control signal, and sends the first control signal to the optical control box if the comparison results match, the second host is used to input a second control signal, and when the switching device is switched, obtains the first control signal of the first host, compares the first control signal with the second control signal, and sends the second control signal to the optical control box if the comparison results match, the optical control box is used to adopt a fail-safe mode and output a drive signal according to the first control signal or the second control signal. The present invention can improve the real-time performance of the rail transit signal control system, shorten the action time of the execution layer from seconds to milliseconds, significantly improve the control and response speed of the system, thereby improving transportation efficiency and safety, and reducing the use of copper cables, energy consumption, and engineering costs.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of a railway section optical fiber network signal control device provided in Embodiment 1 of the present invention;

[0038] Figure 2 A schematic diagram of a railway section optical fiber network signal control system provided in Embodiment 2 of the present invention;

[0039] Figure 3 A schematic diagram of a field control device provided in Embodiment 3 of the present invention;

[0040] Figure 4 A schematic diagram of a light control box provided in a fourth embodiment of the present invention;

[0041] Figure 5 A schematic diagram of a pulse signal provided in Embodiment 4 of the present invention.

[0042] icon:

[0043] 100 - field control device; 110 - first host; 120 - switching device; 130 - second host; 200 - light control box. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] At present, the railway station signal control system is a computer interlocking + relay execution system, and a fully electronic fault-tolerant safety interlocking control system has not yet been realized. The computer interlocking system realizes the operation of logical relationships and adopts computer control; the safety relay combination is the execution circuit of the system, including mature relay circuits such as turnout start circuit, signal machine lighting circuit, track circuit, and various contact circuits. The main circuit of the traditional railway signal equipment execution circuit relies on a real return line (copper cable) to connect the signal tower relay combination contact and the signal equipment on site. Due to the influence of cable impedance and line capacitance, the maximum length of the connection distance is generally 10km, which can only meet the distance between communication base stations of 10 to 18km. Therefore, the traditional system has a large amount of manual wiring, so there is still a hidden danger of "sealed connection", and the relay part needs to be regularly maintained and repaired, which brings great difficulties to the later maintenance.

[0046] Based on this, the railway section optical fiber network signal control device and system provided by the embodiments of the present invention can improve the real-time performance of the rail transit signal control system, shorten the action time of the execution layer from seconds to milliseconds, significantly improve the control and response speed of the system, thereby improving transportation efficiency and safety, and reducing the use of copper cables, reducing energy consumption, and reducing project costs.

[0047] To facilitate understanding of this embodiment, a railway section optical fiber network signal control device disclosed in an embodiment of the present invention is first introduced in detail.

[0048] Embodiment 1:

[0049] Figure 1A schematic diagram of a railway section optical fiber network signal control device provided in Embodiment 1 of the present invention.

[0050] Reference Figure 1 The railway section optical fiber network signal control device includes: a field control device 100 and an optical control box 200 connected via a passive optical network (PassiveOpticalNetwork, PON). The communication between the field control device 100 and the optical control box 200 adopts the RSSP-I type security protocol to ensure the safe transmission of data between stations. The device provided in this embodiment uses a passive optical network to replace traditional cables to achieve reliable and safe transmission of safety information between stations, and can complete the control functions of line direction and section blocking, replacing the circuit form of 6502 electrical centralization with a safety relay as the control unit.

[0051] The two-by-two field control device 100 includes a switching device 120 and two redundant first hosts 110 and second hosts 130 connected via the switching device 120. In order to ensure the reliability of input information and the synchronization of system operations, the two hosts exchange information through redundant synchronous high-speed optical channels, perform operations through the synchronization mechanism between the two hosts, and send the processed control signals to the light control box 200 of the redundant device through a redundant star (or ring) optical communication network.

[0052] For details, please refer to Figure 3 , the first host 110 is used to input a first control signal, and when the switching device 120 switches, obtains a second control signal from the second host 130, compares the first control signal with the second control signal, and sends the first control signal to the light control box 200 if the comparison results match;

[0053] The second host 130 is used to input a second control signal, and when the switching device 120 is switched, obtain the first control signal of the first host 110, compare the first control signal with the second control signal, and send the second control signal to the light control box 200 if the comparison results match;

[0054] The light control box 200 is used to adopt a fail-safe mode and output a driving signal according to the first control signal or the second control signal. The fail-safe mode here is a comprehensive mode of intrinsic fail-safe, reactive fail-safe, and combined fail-safe.

[0055] In short, the control signals input from the first host 110 and the second host 130 are compared. If the comparison results are the same, the control signal is valid and can be output to the light control box 200. If the comparison results are inconsistent, it is determined that there is a fault, and the output is prohibited or the operation is stopped.

[0056] Embodiment 2:

[0057] Figure 2 This is a schematic diagram of a railway section optical fiber network signal control system provided in Example 2 of the present invention.

[0058] Reference Figure 2 The railway section optical fiber network signal control system includes the above-mentioned railway section optical fiber network signal control device, and also includes multiple monitoring machines and multiple signal devices.

[0059] The monitoring machine is connected to the field control device 100 via industrial Ethernet and is used to monitor the faults of the field control device 100; the signal equipment is connected to the light control box 200 via a communication cable and is used to execute commands according to the driving signal of the light control box 200, that is, the light control box 200 realizes the centralized control and management of various signal equipment in the section, such as block signals, track circuits, ATS-P equipment, etc.; in addition, the light control box 200 also executes the recovery of the signal equipment execution command to ensure that the signal equipment safely executes the corresponding action.

[0060] The communication between the monitoring machine, the field control device 100, the light control box 200 and the signal equipment all adopts the RSSP-I type security protocol to ensure the secure transmission of data between stations.

[0061] The field control device 100 in the signal machine room exchanges information with the field small light control box 200 in the IP network mode, realizing the centralized control, display and monitoring of various signal equipment (block signal, track circuit, ATS-P equipment, etc.) in the section. The system provided in this embodiment is a fully electronic computer interlocking control system. This system uses optical fiber instead of cable to realize the reliable and safe transmission of safety information between stations, and can complete the control functions of line direction and section block, replacing the circuit form of 6502 electrical centralized control with safety relay as the control unit.

[0062] Embodiment three:

[0063] Figure 3 This is a schematic diagram of a field control device 100 provided in Embodiment 3 of the present invention.

[0064] Reference Figure 3The first host 110 and the second host 130 have the same structure, including two completely independent redundant power supply systems, redundant CPU (Central Processing Unit) operation systems, watchdog (Watch Dog Timer, WDT) system and redundant communication system. The redundant power supply system includes two identical and independent power supplies, the redundant CPU operation system includes a first CPU and a second CPU, and the redundant communication system includes a first COM (commercial) and a second COM. The working process of the first host 110 and the second host 130 is the same, and the following description will only be made with the first host 110 as the subject.

[0065] A redundant power supply system, used to provide working power to the first host 110 (the second host 130) as a whole;

[0066] The redundant CPU operation system is used to input the first control signal, and when the switching device 120 switches, synchronously obtain the second control signal, compare the first control signal with the second control signal, and if the comparison result matches, the redundant communication system sends the first control signal or the second control signal to the light control box 200 through the passive optical network. The use of the redundant communication system can improve the security of information transmission.

[0067] The WDT system is used to monitor the working status of the redundant CPU operation system and the redundant communication system.

[0068] Specifically, the WDT system is used to monitor the working status of the first CPU and the second CPU. If the working status of the first CPU is abnormal, the second CPU will work, and generate a first alarm message according to the working status of the first CPU, and send the first alarm message to the monitoring machine so that the monitoring machine reminds relevant personnel to perform maintenance; or, if the working status of the second CPU is abnormal, the first CPU will work, and generate a second alarm message according to the working status of the second CPU, and send the second alarm message to the monitoring machine so that the monitoring machine reminds relevant personnel to perform maintenance.

[0069] The WDT system is also used to monitor the working status of the first COM and the second COM. If the working status of the first COM is abnormal, the second COM will work, and generate a third alarm message according to the working status of the first COM, and send the third alarm message to the monitoring machine so that the monitoring machine reminds relevant personnel to perform maintenance; or, if the working status of the second COM is abnormal, the first COM will work, and generate a fourth alarm message according to the working status of the second COM, and send the fourth alarm message to the monitoring machine so that the monitoring machine reminds relevant personnel to perform maintenance.

[0070] Embodiment 4:

[0071] Figure 4 This is a schematic diagram of a light control box provided in Embodiment 4 of the present invention.

[0072] The light control box 200 is deployed next to the railway signal infrastructure equipment, and is connected to the field control device 100 in the signal machinery room through a communication cable. It directly receives the control of the field control device 100, realizes centralized control and management of various signal equipment in the section, such as block signals, track circuits, ATS-P equipment, etc., and realizes the recovery of execution commands.

[0073] To ensure the safety of system functions, the system safety architecture of the light control box 200 adopts a comprehensive mode of intrinsic fail-safe, reactive fail-safe, and combined fail-safe. The combined fail-safe mode is implemented by a two-out-of-two system architecture; the reactive fail-safe mode is implemented by CPU cycle detection; the intrinsic fail-safe mode is implemented in the circuit of enabling / disabling output to ensure that when the two CPUs are inconsistent, the system output is disabled. For details, please refer to Figure 2 and 4 .

[0074] The light control box 200 adopts a two-out-of-two architecture based on a combined fail-safe mode, including a redundant power supply unit, a redundant CPU unit, a redundant communication unit, a watchdog unit (WDT unit) and a switch output unit (denoted by OD). The redundant CPU unit includes a third CPU and a fourth CPU.

[0075] The redundant CPU unit operates in a fixed operation cycle based on the reactive fail-safe mode. The fixed operation cycle is specifically divided into the following stages: power-on, power-on self-test, output, input, operation, self-test, etc. In each stage of the fixed operation cycle, the two CPUs of the two-out-of-two channel perform mutual inspection operations.

[0076] Reference Figure 5 During the self-check stage, the redundant CPU unit outputs a state dynamic pulse signal indicating its own state to the WDT unit, so that the WDT unit monitors the operating state of the redundant CPU unit according to the state dynamic pulse signal, that is, the WDT unit compares the state dynamic pulse signals of the third CPU and the fourth CPU to supervise their operating states.

[0077] During the output stage, the redundant CPU unit outputs a driving dynamic pulse signal to the switch output unit according to the first control signal or the second control signal, so that the switch output unit adopts an inherently fail-safe mode and generates and outputs a driving signal according to the driving dynamic pulse signal, that is, the switch output unit compares the driving dynamic pulse signals of the third CPU and the fourth CPU, and outputs DC power to drive the external relay when they are consistent, otherwise no output is performed.

[0078] Specifically, the driving dynamic pulse signal includes a first pulse signal and a second pulse signal. The third CPU and the fourth CPU output the first pulse signal and the second pulse signal to the switch output unit according to the first control signal or the second control signal; the switch output unit compares the first pulse signal and the second pulse signal, and generates and outputs a driving signal when the comparison results match, and the driving signal is direct current.

[0079] It can be seen from the above embodiments that the present technical solution can significantly reduce the use of copper cables, thereby reducing energy consumption, reducing project costs, reducing construction difficulty, and accelerating project construction efficiency; at the same time, it improves the real-time performance of the rail transit signal control system, thereby improving transportation efficiency and safety.

[0080] The combination of field control equipment and light control box places the execution circuit on site, forms mechatronics with signal equipment, realizes distributed remote control of signals, improves the reliability and safety of the control system through local control and closed-loop control of equipment, and better reflects the status of field equipment.

[0081] The embodiments of the present invention bring the following beneficial effects: the railway section optical fiber network signal control device and system provided by the present invention include a field control device and an optical control box connected through a passive optical network, the field control device includes a switching device and two sets of redundant first host and second host connected through the switching device, the first host is used to input a first control signal, and when the switching device is switched, obtains the second control signal of the second host, compares the first control signal with the second control signal, and sends the first control signal to the optical control box if the comparison results match, the second host is used to input a second control signal, and when the switching device is switched, obtains the first control signal of the first host, compares the first control signal with the second control signal, and sends the second control signal to the optical control box if the comparison results match, the optical control box is used to adopt a fail-safe mode and output a drive signal according to the first control signal or the second control signal. The present invention can improve the real-time performance of the rail transit signal control system, shorten the action time of the execution layer from seconds to milliseconds, significantly improve the control and response speed of the system, thereby improving transportation efficiency and safety, and reducing the use of copper cables, energy consumption, and engineering costs.

[0082] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of controlling the U-line network signal provided in the above embodiment are implemented.

[0083] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the automatic leasing method of the above embodiment are executed.

[0084] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0086] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0087] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0088] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0090] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0091] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A railway section optical fiber network signal control device, characterized in that: include: A field control device and an optical control box connected via a passive optical network, wherein the field control device comprises a switching device and two sets of redundant first and second hosts connected via the switching device; The first host is used to input a first control signal, and when the switching device is switched, obtain a second control signal of the second host, compare the first control signal with the second control signal, and send the first control signal to the light control box if the comparison results match; The second host is used to input a second control signal, and when the switching device is switched, obtain the first control signal of the first host, compare the first control signal with the second control signal, and send the second control signal to the light control box if the comparison result matches; The light control box is used to adopt a fail-safe mode and output a driving signal according to the first control signal or the second control signal; The fail-safe mode includes a combined fail-safe mode, and the light control box adopts a two-out-of-two architecture based on the combined fail-safe mode, including a redundant power supply unit, a redundant CPU unit, a redundant communication unit, a watchdog unit and a switch output unit; The first host comprises a redundant CPU operation system and a redundant communication system connected in sequence; The redundant CPU operation system is used to input the first control signal, and when the switching device switches, obtain the second control signal, compare the first control signal with the second control signal, and if the comparison result matches, the redundant communication system sends the first control signal or the second control signal to the optical control box through the passive optical network; The redundant CPU unit includes a third CPU and a fourth CPU, and the driving dynamic pulse signal includes a first pulse signal and a second pulse signal; The third CPU and the fourth CPU are used to output the first pulse signal and the second pulse signal to the switch output unit according to the first control signal or the second control signal; The switch output unit is used to compare the first pulse signal and the second pulse signal, and generate and output the drive signal when the comparison results match.

2. The railway section optical fiber network signal control device according to claim 1, characterized in that: The first host further includes a watchdog system, the watchdog system is connected to the redundant CPU operation system, the redundant CPU operation system includes a first CPU and a second CPU; The watchdog system is used to monitor the working status of the first CPU and the second CPU. If the working status of the first CPU is abnormal, the second CPU will work, and generate first alarm information according to the working status of the first CPU; or, If the working state of the second CPU is abnormal, the first CPU will work, and the second alarm information will be generated according to the working state of the second CPU.

3. The railway section optical fiber network signal control device according to claim 2, characterized in that: The watchdog system is also connected to the redundant communication system, and the redundant communication system includes a first COM and a second COM; The watchdog system is used to monitor the working status of the first COM and the second COM. If the working status of the first COM is abnormal, the second COM will work, and generate third alarm information according to the working status of the first COM; or, If the working state of the second COM is abnormal, the first COM will work, and fourth alarm information will be generated according to the working state of the second COM.

4. The railway section optical fiber network signal control device according to claim 3, characterized in that: The fail-safe mode also includes a reactive fail-safe mode, and the redundant CPU unit operates in a fixed operation cycle based on the reactive fail-safe mode, wherein the fixed operation cycle includes a self-checking stage and an output stage.

5. The railway section optical fiber network signal control device according to claim 4, characterized in that: The fail-safe mode also includes an intrinsic fail-safe mode; During the self-checking stage, the redundant CPU unit outputs a state dynamic pulse signal to the watchdog unit, so that the watchdog unit monitors the operating state of the redundant CPU unit according to the state dynamic pulse signal; During the output stage, the redundant CPU unit outputs a driving dynamic pulse signal to the switch output unit according to the first control signal or the second control signal, so that the switch output unit adopts the inherent fault safety mode and generates and outputs the driving signal according to the driving dynamic pulse signal.

6. The railway section optical fiber network signal control device according to claim 1, characterized in that: The RSSP-I type security protocol is used between the field control device and the light control box.

7. A railway section optical fiber network signal control system, characterized in that: The device comprises a railway section optical fiber network signal control device as claimed in any one of claims 1 to 6, and further comprises a plurality of monitoring machines and a plurality of signal devices; The monitoring machine is connected to the field control device in the railway section optical fiber network signal control device via industrial Ethernet, and is used to perform fault monitoring on the field control device; The signal device is connected to the optical control box in the railway section optical fiber network signal control device, and is used to execute commands according to the driving signal of the optical control box; The fail-safe mode includes a combined fail-safe mode. The light control box adopts a two-out-of-two architecture based on the combined fail-safe mode, including a redundant power supply unit, a redundant CPU unit, a redundant communication unit, a watchdog unit and a switch output unit.

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