Modularized station interlocking simulation test simulation device

Abstract

The invention discloses a modularized station interlocking simulation test simulation device, and belongs to the technical field of railway signal system testing, the device comprises an upper computer and a lower computer, the lower computer is connected with the upper computer through a communication interface; the upper computer is a handheld terminal, a mobile terminal or a fixed terminal; wherein the upper computer comprises a configuration management module, a man-machine interaction module and a test management module; the lower computer comprises a main control module, a plurality of pluggable standardized analog board cards and a universal interface module; and the analog board card of the lower computer realizes modular expansion through address coding management, and is matched with an interlocking system interface. The device disclosed by the invention has the advantages of portability, universality, simplicity in operation, good man-machine interaction performance and the like, and the modular design supports rapid deployment and reuse; and a novel full-electronic interlocking system can be compatible, and the requirements of engineering monomer debugging and interface alignment testing are met.

Description

Technical Field

[0001] The present invention relates to the technical field of railway signal system testing, and more particularly to a modular station interlocking simulation test device. Background Art

[0002] Interlocking simulators are used to detect faults and wiring errors in indoor signaling equipment. Signal tower interlocking equipment contains numerous wiring connections, making it prone to missing wires, broken wires, poorly soldered connections, and short circuits. These problems are often difficult to detect and, if not promptly corrected, can lead to serious safety incidents. To eliminate these issues, interlocking tests are necessary. These tests require connecting indoor and outdoor equipment together. Using actual outdoor equipment for interlocking tests would be labor-intensive and time-consuming. Therefore, interlocking tests can be performed using simulated outdoor signaling equipment (interlocking simulators) instead of actual equipment.

[0003] Traditional interlocking simulation devices are customized according to the station signal plan and consist of a panel, simulated lights, and track segments. They can debug indoor signal equipment without using real outdoor signals. However, they have problems such as small amount of information displayed, large size, poor portability and versatility, and insufficient interlocking testing.

[0004] Existing interlocking simulation devices simulate railway outdoor signaling equipment, including signal machines, switches, and track circuits. The simulation units are arranged on a panel, creating an actual station floor plan topology. This is used to detect problems such as signal equipment failures and wiring errors within the machinery room. Existing interlocking simulation devices use a panel as a carrier for arranging the simulated signaling equipment. Track sections are drawn on the panel with lines, and a toggle switch is installed in the center of each track section. This toggle controls the excitation circuit of the track section relay, simulating the occupancy and clearance of the track section by flipping the toggle switch. The signal machine is represented by circular indicator lights of different colors, which are connected to the signal machine power supply cable leading from the distribution board. If the cable circuit is conductive, the corresponding light position will light up, otherwise it will light off. When simulating a switch machine, two diodes are typically used to ensure that the switch machine indicates that the circuit is operating normally.

[0005] The existing interlocking simulation device has the advantages of a large display and relatively clear observation of signal equipment, but it also has the following shortcomings:

[0006] 1. Lack of portability. The interlocking simulation device is large in size and inconvenient to move and transport.

[0007] 2. It is not universal and has poor economic efficiency. The interlocking simulator needs to be customized according to the actual station signal plan. After use, it cannot be applied to the next station yard. It is not only time-consuming and labor-intensive during the production process, but also causes waste after use.

[0008] 3. Outdated manufacturing processes. Existing interlocking simulation devices often suffer from short circuits, open circuits, and mixed lines, making troubleshooting time-consuming and labor-intensive. During the manufacturing process, false solder joints and poor solder joints can affect the accuracy of the simulated signal state, requiring repeated verification to identify the cause, impacting the commissioning process.

[0009] 4. The operation of the device is cumbersome and prone to errors, requiring the cooperation of multiple people to perform a series of tasks such as operating the device panel switches, transmitting status information verbally, checking relay status, and confirming interlocking logic.

[0010] 5. Poor human-computer interaction. The display only shows the status of the signal lights. Simulating driving requires simulating occupancy and clearance of each section. Furthermore, the lack of track section occupancy status information on the display requires manual inspection and judgment, which can lead to repeated occupation of a section or failure to clear a section.

[0011] 6. There is no signal simulation equipment failure setting module, and it is impossible to test whether the interlocking machine feedback and alarm circuit are working normally when the outdoor signal equipment fails.

[0012] To sum up, the existing interlocking simulation devices have many defects and shortcomings. Therefore, it is particularly urgent and important to develop a new type of station interlocking simulation test device to improve the portability, versatility and comprehensiveness of the debugging equipment. Summary of the Invention

[0013] In view of this, the present invention provides a modular station interlocking simulation test device, which can at least partially solve the many defects and shortcomings of the above-mentioned existing interlocking simulation devices, improve the authenticity of simulation conditions such as turnout action, route establishment and unlocking, signal opening and closing, and ensure the smooth construction, acceptance and testing of the station interlocking system.

[0014] In order to achieve the above object, the present invention adopts the following technical solutions:

[0015] The embodiment of the present invention provides a modular station interlocking simulation test device, comprising: an upper computer and a lower computer, wherein the lower computer is connected to the upper computer via a communication interface; the upper computer is a handheld terminal, a mobile terminal or a fixed terminal;

[0016] Wherein, the host computer includes:

[0017] Configuration management module, used to import station data and configure simulation parameters;

[0018] The human-computer interaction module is used to provide a visual station map interface, send corresponding control instructions, and display the status of switches, signals, and track circuits in real time;

[0019] The test management module is used to automatically generate test reports and record test data based on outdoor single-item equipment power-on tests and / or indoor signal equipment simulation tests;

[0020] The lower computer includes:

[0021] The main control module implements instruction parsing and status feedback based on the ARM processor;

[0022] Multiple pluggable standardized simulation boards, including AC switch simulation board, DC switch simulation board, signal light position simulation board, station track circuit simulation board, section track circuit simulation board, adjacent station semi-automatic block simulation board, and switch value drive acquisition simulation board;

[0023] Universal interface module, used to connect to external interlocking system and power input;

[0024] The analog board of the lower computer realizes modular expansion through address coding management and matches the interface of the interlocking system.

[0025] Furthermore, the host computer further includes:

[0026] The fault setting module is used to simulate at least one of the following faults: signal wire breakage, switch four-open state, and voltage overlimit fault, and trigger the interlocking system alarm logic test.

[0027] Furthermore, the structure of the lower computer is a portable cabinet or cage type:

[0028] The portable cabinet is made of lightweight engineering plastic and has a unified wiring terminal on the front;

[0029] The cage type adopts a 4U or 6U standard cage, the analog board is installed in a plug-in card manner, and the back side is provided with wiring terminals according to the modules.

[0030] Furthermore, the communication interface includes:

[0031] Wireless communication module, supporting WiFi or Ethernet connection;

[0032] CAN bus module, used for cascading and expanding multiple slave computers.

[0033] Furthermore, the AC switch machine simulation board includes:

[0034] The signal processing control module is used to receive control instructions from the interlocking machine or the host computer, analyze and generate motor drive signals, and determine the switch machine operation status based on the feedback from the signal acquisition module;

[0035] Communication module, used to realize data exchange with the host computer and interlocking machine, upload switch machine status information and receive control instructions;

[0036] Power supply module, used to provide stable DC power supply for AC switch machine simulation board;

[0037] The simulated load adjustment module simulates the electrical characteristics of the switch machine starting excitation current, working current and in-position current by switching the load circuit;

[0038] The motor drive control module drives the AC motor through thyristors or relays according to the instructions of the signal processing control module to simulate the fixed operation, reverse operation and four-way operation of the switch machine;

[0039] The signal acquisition module collects the switch machine's operating voltage, current, and position information in real time and feeds it back to the signal processing and control module;

[0040] The AC switch control module is used to control the on and off of the AC power supply, simulating the 380V AC power supply conditions in the switch circuit to ensure that the action logic is consistent with the real equipment.

[0041] Furthermore, the DC switch machine simulation board includes:

[0042] The signal processing control module is used to receive control instructions from the interlocking machine or the host computer, analyze and generate drive signals, adjust the fixed operation and reverse operation logic of the DC switch according to the feedback from the signal acquisition module, and indicate the circuit status;

[0043] Communication module, used to realize data exchange with the host computer and interlocking machine, upload switch machine status information and receive control instructions;

[0044] Power supply module, used to provide DC power to the DC switch machine simulation board;

[0045] The simulated load adjustment module is used to simulate the starting current, operating current, and in-position holding current of a four-wire or six-wire DC switch through a variable resistor network to match the electrical characteristics of the actual equipment;

[0046] The signal acquisition module is used to collect the switch machine's operating voltage, current, and positioning / reverse position indicating contact status in real time, and feed it back to the signal processing control module through AD conversion;

[0047] The DC switch control module is used to control the on and off of the DC power supply, simulate the switching logic of the switch machine display circuit and the action circuit, and ensure that the action timing is consistent with the actual equipment.

[0048] Furthermore, the signal light position simulation board includes:

[0049] The signal processing control module is used to receive voltage and current signals from the sensor module and information from other modules, process and analyze them, and generate control instructions to achieve precise control and status monitoring of the traffic lights;

[0050] The relay driver module is used to drive the relay according to the instructions of the signal processing control module, control the on and off of the signal light, and realize the broken wire control and broken wire recovery functions;

[0051] The simulated load adjustment module is used to simulate actual load conditions and simulate variable load according to control instructions;

[0052] The sensor module is used to detect the voltage and current signals in the circuit and feed them back to the signal processing and control module to monitor and control the signal status;

[0053] The power module is used to provide stable power supply for each module of the signal light position simulation board; the communication module is used to realize communication with external devices or systems for data transmission and remote control.

[0054] Process monitoring and control.

[0055] Furthermore, the station track circuit simulation board and the section track circuit simulation board both include:

[0056] The control module is used to receive and process the input 25Hz track signal, conduct comprehensive analysis and judgment based on the track circuit status, and issue corresponding control instructions;

[0057] Digital power amplifier module, used to amplify ZPW-2000 frequency-shifted signals and 50Hz / 25Hz track signals;

[0058] The filter output module is used to receive the amplified signal from the digital power amplifier module, eliminate the noise and then output it to the switch array;

[0059] The over-temperature and under-voltage monitoring module is used to detect the circuit temperature in real time and feedback abnormal conditions.

[0060] Furthermore, the adjacent station semi-automatic block simulation board includes:

[0061] Positive and negative signal control module, used to output DC24V positive / negative polarity blocking signal;

[0062] The axle counting switching module is used to support the semi-automatic block superimposed axle counting mode and automatically trigger the departure / receipt signal.

[0063] Furthermore, the switch quantity drive acquisition analog board includes:

[0064] Configuration module, used to freely change the logical correspondence of I / O contacts through configuration to adapt to different station requirements;

[0065] The voltage amplitude adjustment module is used to support eight-channel DC24V drive signal output simulation and has the function of adjustable output voltage amplitude setting through the host computer.

[0066] It can be seen from the above technical solutions that compared with the prior art, the present invention has the following advantages:

[0067] 1. Meet the needs of engineering unit debugging and interface alignment testing: It is compatible with the new fully electronic interlocking system, can simulate the electrical characteristics of outdoor signal machines, switches, track circuits, 64D and other equipment, and its electrical parameters are consistent with those of real equipment, which can reflect the actual interface requirements on site.

[0068] 2. Easy environment construction and unified interface: plug-in terminals facilitate on-site signal connection; good human-machine interface facilitates on-site operation.

[0069] 3. Versatile and adaptable to various scenarios: Depending on requirements, the outdoor equipment simulator should be able to simulate outdoor equipment to facilitate indoor system equipment commissioning. It should also be able to independently control outdoor equipment to reduce dependence on indoor system equipment. The simulator can be used during equipment commissioning and during operation and maintenance.

[0070] 4. Reusable: It has reusable elements to improve cost-effectiveness.

[0071] 5. The operation is simple, and one person can complete a series of tasks such as operating the device panel switches, transmitting status information verbally, checking relay status, and confirming interlocking logic.

[0072] 6. Better human-computer interaction. Added 3D visualization of station maps, real-time rendering of turnout movements, train tracks, and signal status, enhancing the intuitiveness of human-computer interaction.

[0073] 7. Enhanced test management function. Generate multi-dimensional test reports including electrical parameter curves, logic timing diagrams, and compliance scores to help quickly locate problems.

[0074] 8. It is equipped with a signal simulation equipment fault setting module, which can test whether the feedback of the interlocking machine and the alarm circuit are working normally when a fault occurs in the outdoor signal equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0076] Figure 1This is a schematic diagram of the system structure and application of the modular station interlocking simulation test device provided by the present invention.

[0077] Figure 2 This is a schematic diagram of the AC switch machine simulation board provided by the present invention.

[0078] Figure 3 This is a schematic diagram of the DC switch machine simulation board provided by the present invention.

[0079] Figure 4 This is the host computer interface for the AC switch machine simulation function provided by the present invention.

[0080] Figure 5 This is a schematic diagram of the signal light position simulation board provided by the present invention.

[0081] Figure 6 This is the host computer interface for the signal light position simulation function provided by the present invention.

[0082] Figure 7 This is the principle diagram of the station track circuit simulation board and the section track circuit simulation board provided by the present invention.

[0083] Figure 8 This is the principle diagram of the adjacent station 64D semi-automatic blocking and field connection simulation provided by the present invention.

[0084] Figure 9 The present invention provides a flowchart of the 64D semi-automatic block simulation departure at the adjacent station. DETAILED DESCRIPTION

[0085] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0086] In view of the many defects and shortcomings of the existing interlocking simulation device, the embodiment of the present invention discloses a modular station interlocking simulation test device. The structure of the device is generally implemented in the form of a host computer + a slave computer. The structure is as follows: Figure 1 shown.

[0087] The slave computer communicates with the host computer via wired and / or wireless communication, receiving control commands and / or sending status information. The interlocking machine / simulator receives instructions, performs interlocking logic operations, controls the status of the simulated signaling equipment, and feeds this status back to the host computer. The indoor signaling equipment and the slave computer can then be connected via a sub-disk for signal transmission.

[0088] The host computer includes:

[0089] Configuration management module, used to import station data and configure simulation parameters;

[0090] The human-computer interaction module is used to provide a visual station map interface, send corresponding control instructions, and display the status of switches, signals, and track circuits in real time;

[0091] The test management module is used to automatically generate test reports and record test data based on outdoor single-item equipment power-on tests and / or indoor signal equipment simulation tests;

[0092] The fault setting module is used to simulate at least one of the following faults: signal wire breakage, switch four-open state, and voltage overlimit fault, and trigger the interlocking system alarm logic test.

[0093] The lower computer includes:

[0094] The main control module implements instruction parsing and status feedback based on the ARM processor;

[0095] Multiple pluggable standardized simulation boards, including AC switch simulation board, DC switch simulation board, signal light position simulation board, station track circuit simulation board, section track circuit simulation board, adjacent station semi-automatic block simulation board, and switch value drive acquisition simulation board;

[0096] Universal interface module, used to connect external interlocking system and power input.

[0097] The analog board of the lower computer realizes modular expansion through address coding management and matches the interlocking system interface.

[0098] Specific upper computer function design content: The human-computer interaction interface adopts a friendly and easy-to-operate design scheme. Through the operation screen, the simulation device configuration management and simulation setting instructions can be carried out to realize the integrated networking of multiple modules and adapt to the simulation test requirements of the number and type of modules of different station scales; it provides functions such as station diagram import, equipment alignment, and real-time display of simulation device upload status; in stand-alone working mode, the electrical parameters of each simulation device can be displayed on the upper computer software screen; in station diagram working mode, the status information of the existing modular station interlocking simulation test simulation device surface signal equipment can be displayed on the upper computer software station diagram; by clicking a button, the simulation driving and fault status setting instructions can be sent to the lower computer.

[0099] Lower computer functional design content: Based on the ARM processor, the simulation functions of related equipment are implemented. According to the type of simulation equipment, a modular approach is adopted to design the outdoor signal equipment simulation board as an independent board with a unified interface. Address coding management and extended application are also possible. Each independent board can be associated with different station topologies through station data and related configurations, making the device universal. There are seven types of simulation boards: AC switch simulation board, DC switch simulation board, signal light position simulation board, station track circuit simulation board, section track circuit simulation board, adjacent station semi-automatic block simulation board, switch value drive acquisition simulation board, etc.

[0100] After the lower computer is connected to the interface corresponding to the branching cabinet, it can execute the control instructions of the interlocking machine (interlocking simulation machine) and can feed back the simulated signal equipment status to the interlocking machine (interlocking simulation machine). When the interlocking machine is used as the test object, the steps of carrying out the interlocking test using the modular station interlocking simulation test simulation device of the present invention are as follows: first, the cable drawn out of the branching cabinet is connected to the corresponding interface on the lower computer of the modular station interlocking simulation test simulation device. After the test instruction is input to the interlocking machine, the interlocking machine performs interlocking logic operations according to the control instruction information, the collected signal equipment status information and the internal interlocking information, and converts the result into a drive instruction after obtaining the operation result, thereby controlling the status of equipment such as the simulated signal machine and the simulated switch machine. The equipment status of the modular station interlocking simulation test simulation device will change according to the operation on the upper computer and the control instruction of the interlocking machine. The lower computer sends the collected signal equipment status to the upper computer by communication, and the upper computer displays the status of the signal equipment. By comparing the signal equipment status on the interlocking machine with the signal equipment status of the upper computer, it is determined whether there are problems such as wiring errors or equipment installation errors in the indoor equipment.

[0101] The modular station interlocking simulation test device enables live testing of individual outdoor equipment. After completing simulated testing of indoor signaling equipment, it can conduct live testing of individual outdoor equipment, such as switches, signal machines, and track circuits. This allows live testing of outdoor signaling equipment and automatically generates test forms and records, fully utilizing the test device's capabilities and improving the efficiency and accuracy of live testing.

[0102] The modular station interlocking simulation test device features test management capabilities. During the test, it automatically creates interlocking test tables, records the test process, and automatically saves and stores the operating status and technical parameters of signaling equipment. Interlocking test results can be reviewed and exported via host computer operation, providing efficient and convenient technical support for interlocking test management and analysis.

[0103] The specific structural design of the present invention is described in detail below:

[0104] 1. Upper computer structure design

[0105] The host computer of the modular station interlocking simulation test device adopts a portable design scheme. The specific design details are as follows:

[0106] There are three optional types of host terminals:

[0107] (1) Handheld terminals: such as tablet computers, which have the significant advantages of being easy to carry and operate. Their communication mode is wireless WIFI communication, which allows for flexible use in different work scenarios.

[0108] (2) Mobile terminal: such as a laptop computer, using wireless WIFI communication, suitable for use at the test site or other environments requiring mobile operation;

[0109] (3) Fixed terminal: It includes a PC or a touch screen all-in-one computer, which can be placed on a remote workbench or installed together with a cage cabinet according to actual needs. This type of terminal uses wired Ethernet communication and can provide protection for work scenarios that require stable connection and fixed operating position.

[0110] This design scheme fully considers the usage scenarios and needs of different users. By providing a variety of upper computer terminals, it achieves convenience and flexibility in operation. At the same time, it takes into account the characteristics of different communication methods, ensuring effective communication and interaction with the modular station interlocking simulation test device in different working environments.

[0111] 2. Lower computer structure design

[0112] There are seven types of lower-level computer simulation boards, namely AC switch simulation board, DC switch simulation board, signal light position simulation board, station track circuit simulation board, section track circuit simulation board, 64D semi-automatic block simulation board (neighboring station semi-automatic block simulation board), switch quantity drive acquisition simulation board and other equipment.

[0113] The lower computer tooling of the modular station interlocking simulation test device adopts a portable design. A single box can accommodate multiple simulation equipment boards, with no restrictions on the type or location of the simulation equipment boards, allowing any board to be used in any location. Taking into account factors such as power supply power, structural strength, heat dissipation performance, equipment terminal blocks, and device integration, the lower computer box is divided into two types based on actual conditions: portable cabinet type and cage type. The detailed design scheme is as follows:

[0114] 1) Portable cabinet: This structure is suitable for on-site application scenarios. Its size design is similar to that of a portable cabinet, making it easy to carry to the project site for operation. The portable cabinet is made of lightweight, high-strength materials such as engineering plastics. A unified terminal position is set on the front for external wiring.

[0115] 2) Cage-type: This structure is suitable for laboratory testing, teaching, and type testing applications. It uses a standard 4U or 6U cage to meet different testing requirements. Simulators are installed using a plug-in card format, and the card interface is designed to be universal and unified, facilitating module replacement and expansion. Cage-type systems are generally made of metal. Terminal blocks are located on the back of the cage, module by module, for external wiring.

[0116] Lower computer interface design

[0117] (1) External interface requirements

[0118] 1) Power interface

[0119] The modular station interlocking simulation test simulator tooling uses a unified AC 220V power supply as its external power supply interface, and is also compatible with a DC 24V power supply. Power interfaces are centrally configured. Power for other actions or equipment required during the operation of the modular station interlocking simulation test simulator is managed by wiring port and can be provided by a power panel or other devices.

[0120] 2) Wiring interface

[0121] For portable cabinets, external wiring ports are centrally located; for cages, external wiring ports are individually located for each module board. Plug-in terminals are used for easy wiring connection or replacement.

[0122] (2) Interface requirements between subsystems

[0123] Network interface: Wi-Fi or Ethernet is used for communication between the host and slave computers. For portable cabinets, wireless Wi-Fi is used for network management. For cages, data is first aggregated to a switch via a wired network, and then wirelessly connected to the host computer via a wireless router. Direct wireless communication is also possible.

[0124] CAN bus interface: For CAN bus interfaces, whether portable cabinet or cage type, wired cascade expansion networking is adopted.

[0125] The lower computer integrates seven types of standardized analog boards, connects to the interlocking system through a universal interface, and supports modular expansion.

[0126] 2.1. Design of turnout machine simulation board

[0127] Switch machine simulation board: supports simulation of fixed operation, reverse operation and four-opening states of AC / DC switch machines, and displays the operating voltage and current in real time.

[0128] The turnout switch simulator board is available in two types: AC and DC. It can simulate the electrical performance parameters of five-wire AC and four- / six-wire DC switch machines. It supports both automatic and manual control, simulating both fixed and reverse operations, as well as positioning, reverse, and four-way indications. It also supports manual setting of the switch's actuation time. AC and DC information is displayed on the control screen, including voltage, fixed and reverse status, actuation voltage, and actuation current.

[0129] like Figure 2 The figure shows the schematic diagram of the AC switch machine simulation board, which mainly consists of a signal processing control module, a communication module, a power supply module, a simulated load adjustment module, a motor drive control module, a signal acquisition module and an AC switch control module.

[0130] like Figure 3 The figure shows the schematic diagram of the DC switch machine simulation board, which mainly consists of a signal processing control module, a communication module, a power supply module, a simulated load adjustment module, a signal acquisition module and a DC switch control module.

[0131] The following is a brief introduction to the functions of the AC switch simulator board: Upon power-up, the AC switch simulator board defaults to automatic operation. It identifies the fixed-reverse position and, upon detecting 380V voltage in the corresponding circuit, simulates the switch operation process and executes the fixed-reverse operation. The screen allows users to set the switch operation time and implement four-way control. When a switch is required, the interlocking machine or host computer sends a command to the signal processing control module via the communication module. The signal processing control module activates the corresponding AC switch control module based on the command, allowing AC power to flow through the activated AC switch control module and into the motor drive circuit. Components such as thyristors in the motor drive control module drive the motor according to the control signal from the signal processing control module. The motor then drives the switch point rail through the transmission mechanism, achieving switch switching. The signal processing control module switches simulated loads to generate the motor's starting excitation current, regulating the motor's voltage and current, and simulating the operating current and the current after the switch is fully activated. During this process, the power supply module provides stable DC power for the entire system. At the same time, the sensors in the signal acquisition module will feed back information such as the position, working current and working voltage of the turnout to the signal processing control module. The signal processing control module will determine whether the turnout is in place based on the feedback information, and feed back the status information to the interlocking machine and the host computer through the communication module.

[0132] The following combination Figure 4 The automatic operation, four-opening control, switch machine action time setting and communication status display functions of the AC switch machine simulation board are described.

[0133] (1) Automatic operation function. Click the "Auto" button to enter the automatic operation mode. Take the fixed operation process as an example: the switch is currently identified to be in the reverse position, and the voltage and current values ​​of each line are displayed on the right side of the screen. After the 380V condition is met, the switch action is simulated, and the countdown of the switch action is displayed in the status prompt window at the bottom of the screen. After the simulated switch action is completed, the fixed reverse table status switches to the positioning position, the fixed operation is completed, and the status prompt window at the bottom of the screen displays "Fixed operation test completed".

[0134] (2) Fault prompt function: If a fault message is detected during the test unit operation, it will be prompted in the status window. Examples of fault messages are as follows:

[0135] System prompts Cause of failure "Location indicates voltage abnormality" Not operated, positioning indicates that the circuit has DC voltage "Reverse position indicates voltage abnormality" No operation, the reverse position indicates that there is DC voltage in the circuit "Location indicates voltage is out of limit" The DC voltage of the meter exceeds the range of 13-30V "Reverse position indicates voltage exceeds limit" The reverse DC voltage exceeds the range of 13-30V "Test conditions not met" AC110V is not detected, indicating that the power supply voltage may be outside the range of 90-130V.

[0136] (3) Four-way control function: Click the "Four-way" button to perform four-way control. At this time, the simulation unit disconnects all circuit connections. The switch machine status is indicated as "fault position" and the status prompt window at the bottom of the screen displays "Four-way".

[0137] (4) Switch machine action time setting function: Click the switch machine action time digital window, a numeric keyboard will pop up, enter the data, and confirm. The input data range is 1-50.

[0138] (5) Communication status display function: The communication status between the display screen and the AC switch test unit is displayed at the top of the screen. The communication status between the display screen and the AC switch test unit is displayed at the top of the screen. Normal communication is displayed as a green light, communication failure is displayed as a red light, and when the screen is powered on and no communication is established with the test unit, the display is gray.

[0139] 2.2、Signal light position simulation board design

[0140] Traffic light position simulation board: realizes 8-speed filament current adjustment and filament broken fault simulation;

[0141] The signal light position simulation board simulates the lighting and electrical performance parameters of signal light positions. It supports both automatic and manual lighting control, simulates variable loads (8 levels of filament current), simulates lighting failures, and simulates filament breakage / recovery. It also uploads the light position status in real time, displaying the filament voltage and current on the control screen. The signal light position simulation board also features signal load selection. Depending on test requirements, you can choose from a variety of filament relays, such as JZXC-H142, JZXC-H18, JZXC-H18F, JZXC-H18F1, and JZXC-16 / 16. Setting different lighting light source loads facilitates accurate testing of filament relay current.

[0142] like Figure 5 The figure shows the schematic diagram of the signal light position simulation board, which mainly consists of a signal processing control module, a communication module, a power module, a simulated load adjustment module, a relay driver module, and a sensor module. The 8-way signal light AC220V is used as the board input to provide 220V AC power to the simulated load. The signal processing control module is the core of the entire board. It receives voltage and current signals from the sensor module and information from other modules, processes and analyzes them, and then sends control instructions to the relay driver module, simulated load adjustment module, etc. according to the set logic and algorithm to achieve precise control and status monitoring of the signal light; the relay driver module drives the relay to operate according to the instructions of the signal processing control module, controls the on and off of the signal light, and realizes the broken wire control and broken wire recovery functions; the simulated load adjustment module is used to simulate actual load conditions and simulate variable loads according to control instructions; the voltage sensor and current sensor (sensor module) are used to detect the voltage and current signals in the circuit respectively, and feed these signals back to the signal processing control module to monitor and control the status of the signal machine; the power supply module provides a stable power supply for each module in the entire system to ensure the normal operation of the system; the communication module realizes communication between the system and external devices or systems, and is used for data transmission, remote monitoring and control and other functions.

[0143] like Figure 6 As shown, the signal light position simulation board is in automatic operation mode by default after power on. It can simulate up to 8 road light position tests, collect AC220V voltage at the input end, identify the voltage and automatically control the lighting, and output normal current. The simulation unit can output 8 gears of current, and the normal current is the 5th gear. The status of each signal light position is displayed on the right side of the screen. Figure 6 Describe the automatic operation, manual shifting, wire break control, wire break recovery, voltage fault prompt and communication status display functions of the signal light position simulation board.

[0144] 1. Automatic operation function. Click the "Auto" button to enter automatic operation for all channels. The signal light status will be displayed as "Auto" on the right side of the screen. When the voltage in automatic mode is higher than 180V, the light will be automatically turned on and the output will be normal current. If the voltage is lower than 180V, a fault will be displayed.

[0145] 2. Manual gear shifting function. First, rotate the appropriate load type. After confirming the load model, perform manual gear shifting. Click the "<" and ">" buttons to select the gear. Click the "OK" button to implement manual gear shifting. The signal light status will be displayed on the right side of the screen as "Manual gear shifting".

[0146] 3. Broken wire control function. Click the "Broken Wire / Restore" button of the channel corresponding to the signal light position to execute the broken wire control. The signal light position status will be displayed as "Broken Wire Control" on the right side of the screen.

[0147] 4. Broken wire recovery function. After the broken wire is controlled, click the "Broken Wire / Recovery" button of the corresponding signal light position again to perform broken wire recovery. The signal light position status will be displayed as "Broken Wire Recovery" on the right side of the screen.

[0148] 5. Voltage fault prompt function. When the voltage is lower than 170V, the signal light status will be displayed on the right side of the screen as "220V voltage too low"; when the voltage is above 180V, manual shifting can be performed. When the voltage is lower than 180V, the signal light status will be displayed on the right side of the screen as "low voltage, manual control invalid".

[0149] 6. Communication status display function. The communication status between the display screen and the signal light position test unit is displayed at the top of the screen. Normal communication is indicated by a green light, communication failure is indicated by a red light, and when the screen is powered on and no communication is established with the test unit, the light is gray.

[0150] 2.4. Track circuit simulation board design

[0151] Track circuit simulation board: supports ZPW-2000, 50Hz / 25Hz signal generation and parameter detection;

[0152] The station track circuit simulation board and the section track circuit simulation board are essentially the same; therefore, the track circuit simulation board will be used for explanation.

[0153] The track circuit simulation board's primary function is to simulate track circuit occupation and idle states by switching relays on and off. It supports both automatic and manual control for track circuit simulation. The board can detect the voltage and frequency of track circuit signals, including ZPW-2000 frequency-shifted track circuits, 50Hz, and 25Hz track circuits. Parameters such as voltage, carrier frequency, low-frequency frequency, signal frequency, and phase difference are displayed on the control screen.

[0154] like Figure 7 The schematic diagram of the track circuit simulation board is shown. It primarily consists of a signal processing control module, a communication module, a power supply module, a digital isolation driver module, a digital power amplifier module, a filter output module, an overtemperature and undervoltage monitoring module, a signal acquisition module, and a switch array. A 25Hz local signal is input to the board, and the power supply module provides power to the system. It can detect track circuit voltage and frequency, including ZPW-2000 series frequency-shifted signals, 18-information frequency-shifted signals, and 50Hz and 25Hz track signals.

[0155] The digital isolation driver module receives signals from the control module, uses digital isolation technology to ensure reliable signal transmission, and drives the digital power amplifier module. The digital power amplifier module receives the signal from the digital isolation driver module, performs power amplification, and transmits the amplified signal to the filter output module. The amplified signal is filtered to remove noise and then distributed through the switch array according to control instructions, ultimately achieving N outputs. Simultaneously, the overtemperature and undervoltage monitoring module and the signal acquisition module monitor the circuit status in real time and provide feedback to the control module. The signal processing control module receives and processes the input 25Hz local signal, performs comprehensive analysis and judgment based on the track circuit status, and then issues corresponding control instructions to adjust the system's operating status.

[0156] 2.5 Design of the semi-automatic block simulation board at the adjacent station

[0157] Semi-automatic block simulation board: simulates 64D block logic and supports axle counting mode switching.

[0158] like Figure 8 The schematic diagram of the 64D semi-automatic block and field-linked simulation of the neighboring station mainly consists of a signal processing control module, a communication module, a power supply module, a positive and negative signal control module, a positive and negative signal detection module, a switch drive module, a relay drive module, a sensor, a field-linked drive output module, etc.

[0159] The primary function of the adjacent station semi-automatic block simulation board is to simulate 64D semi-automatic block functions by outputting DC24V positive and negative block signals and monitoring their polarity, enabling simulated departure and arrival functions. The host computer screen features manual operation buttons such as a block button, a reset button, a cancel reset button, and an accident reset button. It can set the track status of the approaching section of the departure or arrival station to automatically trigger a train departure signal (i.e., output a positive block signal) or, in the superimposed axle counting mode, automatically trigger a train arrival signal (i.e., output a negative block signal). An axle counting toggle button supports the superimposed axle counting mode of semi-automatic block, enabling automatic pressing of the block and reset buttons. The positive and negative signal detection module feeds the detected block signals back to the signal processing and control module, which then outputs the field-link signal based on the block and reset conditions between the two stations.

[0160] Simulated train-connection function: The signal processing control module controls relays and photoelectric switches to achieve circuit conduction, while the positive and negative signal detection module detects the polarity of incoming ZXJ and FXJ relay signals. Based on logical relationships, the positive and negative signal control module simulates the output of corresponding ZDJ and FDJ relay signals from semi-automatic block equipment to simulate a train-connection station. The ZXJ and FXJ relays receive block signals from adjacent stations: the ZXJ receives positive block signals, and the FXJ receives negative block signals. The ZDJ and FDJ relays transmit positive and negative block signals, respectively, to adjacent stations.

[0161] like Figure 9 As shown in the flowchart for the simulated departure function, the simulated departure station function is implemented through host computer operation. In the superimposed axle counting mode, once the axle counting host confirms that the station is ready for departure, the system automatically simulates a manual operation by pressing the block button, issuing a "request to depart" signal to simulate the departure station. The signal processing control module issues the corresponding command, and the positive and negative signal control module outputs a positive polarity request to depart signal, sending a request block signal to the adjacent station. Upon receiving a positive polarity acceptance signal from the receiving station, the host computer is used to set the track circuit status of the departure station and the axle count of the starting detection point, which automatically triggers the output of the signal to simulate the train's departure from the departure station. In the non-superimposed axle counting mode, the block button must be manually pressed on the host computer to issue the "request to depart" signal to simulate the departure station.

[0162] 2.6、Design of switch quantity drive acquisition analog board

[0163] Switching drive board: flexibly configure I / O logic to meet various station requirements.

[0164] The switch quantity drive acquisition simulation board supports automatic operation and manual operation functions, collects the measured voltage signal in real time, supports LED display and status upload, and can output analog contact voltage signals on demand; through configuration, the I\O contact logic correspondence can be freely changed to adapt to different station requirements without changing the wiring; it can realize eight-channel conventional relay load and power simulation, and has the function of setting the relay action threshold voltage through the host computer; eight-channel DC24V drive signal output simulation, with the function of adjustable output voltage amplitude setting through the host computer; the I / O status can be displayed on the control screen, and the output DC24V and other configurable parameter settings can be controlled through screen operation.

[0165] The present invention provides a modular station interlocking simulation test device, which is suitable for simulation tests before the opening of the interlocking system and related equipment controlled or collected by the interlocking system (including switches, signals, track circuits, semi-automatic blocks, and drive collection switches). It can be used to simulate the functions and electrical characteristic parameters of related equipment; it is compatible with the new all-electronic interlocking system and can realize outdoor single-item equipment with machine testing. Among them, the modular design supports rapid deployment and reuse; it can cover the all-electronic interlocking system, support single-unit debugging and with machine testing; it is intelligent, automatically generates test reports, and improves fault location efficiency. This device can be applied to multiple railway signal debugging projects, significantly improves test efficiency and reduces labor costs, and is suitable for construction debugging, operation and maintenance, and teaching and training scenarios.

[0166] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0167] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular station interlocking simulation test device, characterized in that: include: A host computer and a slave computer, wherein the slave computer is connected to the host computer via a communication interface; The host computer is a handheld terminal, a mobile terminal or a fixed terminal; Wherein, the host computer includes: Configuration management module, used to import station data and configure simulation parameters; The human-computer interaction module is used to provide a visual station map interface, send corresponding control instructions, and display the status of switches, signals, and track circuits in real time; The test management module is used to automatically generate test reports and record test data based on outdoor single-item equipment power-on tests and / or indoor signal equipment simulation tests; The lower computer includes: The main control module implements instruction parsing and status feedback based on the ARM processor; Multiple pluggable standardized simulation boards, including AC switch simulation board, DC switch simulation board, signal light position simulation board, station track circuit simulation board, section track circuit simulation board, adjacent station semi-automatic block simulation board, and switch value drive acquisition simulation board; Universal interface module, used to connect to external interlocking system and power input; The analog board of the lower computer realizes modular expansion through address coding management and matches the interface of the interlocking system.

2. A modular station interlocking simulation test device according to claim 1, characterized in that: The host computer also includes: The fault setting module is used to simulate at least one of the following faults: signal wire breakage, switch four-open state, and voltage overlimit fault, and trigger the interlocking system alarm logic test.

3. A modular station interlocking simulation test device according to claim 1, characterized in that: The structure of the lower computer is a portable cabinet or cage type: The portable cabinet is made of lightweight engineering plastic and has a unified wiring terminal on the front; The cage type adopts a 4U or 6U standard cage, the analog board is installed in a plug-in card manner, and the back side is provided with wiring terminals according to the modules.

4. A modular station interlocking simulation test device according to claim 1, characterized in that: The communication interface includes: Wireless communication module, supporting WiFi or Ethernet connection; CAN bus module, used for cascading and expanding multiple slave computers.

5. The modular station interlocking simulation test device according to claim 1, characterized in that: The AC switch machine simulation board includes: The signal processing control module is used to receive control instructions from the interlocking machine or the host computer, analyze and generate motor drive signals, and determine the switch machine operation status based on the feedback from the signal acquisition module; Communication module, used to realize data exchange with the host computer and interlocking machine, upload switch machine status information and receive control instructions; Power supply module, used to provide stable DC power supply for AC switch machine simulation board; The simulated load adjustment module simulates the electrical characteristics of the switch machine starting excitation current, working current and in-position current by switching the load circuit; The motor drive control module drives the AC motor through thyristors or relays according to the instructions of the signal processing control module to simulate the fixed operation, reverse operation and four-way operation of the switch machine; The signal acquisition module collects the switch machine's operating voltage, current, and position information in real time and feeds it back to the signal processing and control module; The AC switch control module is used to control the on and off of the AC power supply, simulating the 380V AC power supply conditions in the switch circuit to ensure that the action logic is consistent with the real equipment.

6. The modular station interlocking simulation test device according to claim 1, characterized in that: The DC switch machine simulation board includes: The signal processing control module is used to receive control instructions from the interlocking machine or the host computer, analyze and generate drive signals, adjust the fixed operation and reverse operation logic of the DC switch according to the feedback from the signal acquisition module, and indicate the circuit status; Communication module, used to realize data exchange with the host computer and interlocking machine, upload switch machine status information and receive control instructions; Power supply module, used to provide DC power to the DC switch machine simulation board; The simulated load adjustment module is used to simulate the starting current, operating current, and in-position holding current of a four-wire or six-wire DC switch through a variable resistor network to match the electrical characteristics of the actual equipment; The signal acquisition module is used to collect the switch machine's operating voltage, current, and positioning / reverse position indicating contact status in real time, and feed it back to the signal processing control module through AD conversion; The DC switch control module is used to control the on and off of the DC power supply, simulate the switching logic of the switch machine display circuit and the action circuit, and ensure that the action timing is consistent with the actual equipment.

7. The modular station interlocking simulation test device according to claim 1, characterized in that: The signal light position simulation board includes: The signal processing control module is used to receive voltage and current signals from the sensor module and information from other modules, process and analyze them, and generate control instructions to achieve precise control and status monitoring of the traffic lights; The relay driver module is used to drive the relay according to the instructions of the signal processing control module, control the on and off of the signal light, and realize the broken wire control and broken wire recovery functions; The simulated load adjustment module is used to simulate actual load conditions and simulate variable load according to control instructions; The sensor module is used to detect the voltage and current signals in the circuit and feed them back to the signal processing and control module to monitor and control the signal status; The power module is used to provide stable power supply for each module of the signal light position simulation board; Communication module, used to realize communication with external devices or systems for data transmission, remote monitoring and control.

8. The modular station interlocking simulation test device according to claim 1, characterized in that: The station track circuit simulation board and the section track circuit simulation board both include: The control module is used to receive and process the input 25Hz track signal, conduct comprehensive analysis and judgment based on the track circuit status, and issue corresponding control instructions; Digital power amplifier module, used to amplify ZPW-2000 frequency-shifted signals and 50Hz / 25Hz track signals; The filter output module is used to receive the amplified signal from the digital power amplifier module, eliminate the noise and then output it to the switch array; The over-temperature and under-voltage monitoring module is used to detect the circuit temperature in real time and feedback abnormal conditions.

9. The modular station interlocking simulation test device according to claim 1, characterized in that: The adjacent station semi-automatic block simulation board includes: Positive and negative signal control module, used to output DC24V positive / negative polarity blocking signal; The axle counting switching module is used to support the semi-automatic block superimposed axle counting mode and automatically trigger the departure / receipt signal.

10. The modular station interlocking simulation test device according to claim 1, characterized in that: The switch value drive acquisition simulation board includes: Configuration module, used to freely change the logical correspondence of I / O contacts through configuration to adapt to different station requirements; The voltage amplitude adjustment module is used to support eight-channel DC24V drive signal output simulation and has the function of adjustable output voltage amplitude setting through the host computer.

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