Rail transit turnout switch machine emergency control system and method

Abstract

This invention provides an emergency control system and method for railway turnout switching machines. The system includes: a video information acquisition device installed outdoors in the track area and facing the turnout area, used to collect real-time equipment information of the turnout area and obtain the status of the turnout area; a comprehensive backup panel installed in the comprehensive control room, used to collect control commands generated based on the status of the turnout area, determine the validity of the control commands according to a judgment principle, and send valid control commands; and several emergency converters installed outdoors and connected to the comprehensive backup panel and the corresponding switch machine located in the turnout area, used to receive the valid control commands and control the start, stop, and rotation direction of the switch machine according to the valid control commands. This invention optimizes the handling process for turnout failures and abnormalities, and improves the efficiency of turnout failure state transition.

Description

Technical Field

[0001] This invention belongs to the field of rail transit, and specifically relates to an emergency control system and method for rail transit turnout switching machines. Background Technology

[0002] Turnouts are important connecting devices for the convergence of rail transit lines and the changing of train tracks. They are key devices that ensure the safe transfer of locomotives and rolling stock from one line to another. They are widely used in urban subway, high-speed rail, and freight stations. Their switching efficiency and operational stability determine the line's throughput capacity.

[0003] During railway operation, numerous factors can affect turnout switching, such as foreign objects between turnouts, switch machine motor malfunctions, or indication circuit failures, resulting in turnouts failing to switch to their intended positions or having unknown turnout status. On busy lines, a turnout switch machine malfunction or a failure in its control circuit can prevent all trains passing through the area from switching tracks or passing through, leading to widespread delays or adjustments to train schedules. Furthermore, as train speeds increase, the required radius of guide curves increases, and turnout numbers become larger. A single turnout requires multiple switch machines to meet line demands. A malfunction in any of these switch machines will prevent that set of turnouts from switching to the intended position, placing even more stringent requirements on switch machines to mitigate the risk of disrupting normal operations.

[0004] With the improvement of maintenance procedures, the reliability of railway signaling equipment has been greatly improved, and the total number of failures has steadily decreased. However, turnout switch machine failures account for 41.27% of all signaling equipment failures. Currently, the process for resolving turnout failures is quite rigorous and complex, requiring at least two personnel to go to the site to confirm the cause of the failure, and sometimes even requiring manual operation of the turnout to ensure the line can continue operating. The current rail transit turnout switch machine failure handling process has the following issues that urgently need optimization:

[0005] 1. When there is a fault in the turnout area, it is impossible to observe the status of key equipment such as switch rails and switch machines on the track side in a timely manner. In the traditional handling process, station staff and safety personnel need to carry tools to the track to confirm the status of the turnout on site.

[0006] 2. Manual switching of switches is inefficient. The safety communication process and operation during manual switching consume more time, which greatly reduces the efficiency of train passage.

[0007] 3. There are many turnout switch machines with multiple traction. For large turnouts, multiple sets of switch machines are required for traction. Manually cranking the turnouts is physically demanding for the operator and is difficult to meet the requirements of frequent operation intervals, especially during peak transport periods.

[0008] 4. There is no effective alternative system when the train control system fails. The control of the turnout mainly relies on the operation of the train control system. When the system fails, there is no effective alternative system to remotely control the turnout switch machine.

[0009] 5. High risk of on-site operation: Station staff and safety officers need to cooperate with dispatchers on the line side for a long time to carry out on-site operations, facing many hazards on the line side, and there is a high risk to personal safety.

[0010] 6. The turnout switch machine has no backup switching power system. If the indication or control circuit fails, the switch machine can only be switched manually. In remote or extreme weather conditions, the system cannot be guaranteed to operate. Summary of the Invention

[0011] The purpose of this invention is to provide an emergency control system and method for railway turnout switching machines to overcome the above-mentioned shortcomings, so as to optimize the handling process of turnout failure or abnormality, improve the efficiency of on-site confirmation, and improve the efficiency of turnout failure state transition.

[0012] To achieve the above objectives, the present invention provides an emergency control system for a rail transit turnout switch machine, comprising: a video information acquisition device, which is installed outdoors in the track area and faces the turnout area, for real-time acquisition of equipment information of the turnout area and obtaining the status of the turnout area; a comprehensive backup panel, which is installed in the comprehensive control room, for acquiring control commands generated based on the status of the turnout area, determining the validity of the control commands according to a judgment principle, and sending valid control commands; and several emergency converters, which are installed outdoors and respectively connected to the comprehensive backup panel and the switch machine located in the turnout area, for receiving the valid control commands and controlling the start, stop, and rotation direction of the switch machine according to the valid control commands.

[0013] Optionally, the integrated backup panel includes: a station yard panel displaying a station yard plan and turnout positioning and reversing information; a video display connected to the video information acquisition device for real-time display of the selected turnout area; an acquisition and judgment unit storing the judgment principles for determining whether the control command is valid; and a power switching unit connected to the emergency converter for sending the valid control command.

[0014] Optionally, the integrated backup panel further includes: several status indicator lights, which are set in the turnout area of ​​the station yard plan to display turnout status information; and several non-automatic reset buttons, including a turnout button, a positioning control button, a reversing control button, and a switching action power button.

[0015] Optionally, the integrated backup panel is connected to the signaling system and the turnout combination control cabinet respectively through interlocking equipment, and the turnout positioning information and reversing information on the integrated backup panel are directly obtained from the signaling system or the indoor turnout combination control cabinet.

[0016] Optionally, the emergency converter includes three modes: isolation mode, emergency conversion mode, and lockout mode.

[0017] Optionally, when the train control system is working normally, the emergency converter is in the isolation mode, in which the emergency converter has no power and is not jammed.

[0018] Optionally, when the train control system or the switch machine power system fails, the emergency converter activates the emergency conversion mode, in which the switch machine is positioned or reversed according to a valid control command.

[0019] Optionally, once the switch machine has been switched to the correct position, the emergency converter switches to a locked mode, in which the switch machine cannot be rotated.

[0020] Optionally, the video information acquisition device includes several video cameras, each of which is installed on a pole at the top of the tunnel or on the side of the track in the outdoor turnout area and is aimed at each turnout area to collect the equipment information in real time. The equipment information includes the position of the switch rail, the gap between the switch rail and the stock rail, and the switching stroke and operation time of the switch machine.

[0021] Optionally, the emergency converters are connected in series via optical fibers to form a ring network, and the video camera in each turnout area is connected to its adjacent emergency converter.

[0022] Optionally, it also includes an independently configured working power supply and a switching power supply; the working power supply is connected to the video information acquisition device, the integrated backup disk and the emergency converter respectively, and is used to provide working power; the switching power supply is connected to the emergency converter and is used to provide switching power.

[0023] Optionally, the operating power supply provided to the emergency converter and the power supply for the conversion operation are both low-voltage DC 24V power supplies.

[0024] Optionally, the emergency control system for rail transit turnout switching machines further includes a video operation recording and storage device, which is connected to the video information acquisition device and the integrated backup panel respectively, for storing real-time acquired equipment information of the turnout area and all valid control commands sent by the integrated backup panel.

[0025] Optionally, the judgment principles include: Principle 1, the switching action power button is in the pressed state; Principle 2, the positioning control button or the reversing control button is in the pressed state; Principle 3, only one turnout button is in the pressed state; when all of Principle 1 to Principle 3 are satisfied, the control command is valid; when any one of Principle 1 to Principle 3 is not satisfied, the control command is invalid.

[0026] The present invention also provides an emergency control method for a rail transit turnout switch machine, implemented using the aforementioned emergency control system for a rail transit turnout switch machine. The method includes: a video information acquisition device acquiring real-time equipment information of the turnout area, obtaining the status of the turnout area, and determining the fault type of the turnout area; if the fault type is a switch machine fault in the turnout area, then selecting the turnout to be controlled via a comprehensive backup panel and sending a valid control command to the corresponding emergency converter; the emergency converter controlling the start, stop, and rotation direction of the switch machine according to the valid control command.

[0027] Optionally, after the switch machine controls the turnout to the correct position, the video information acquisition device confirms whether the turnout tips are in close contact; if the turnout tips are in close contact, the turnout is locked; if the turnout tips are not in close contact, the status of the turnout area is reconfirmed.

[0028] Optionally, if the fault type is a mechanical fault, an emergency replacement procedure is executed; after the switch machine fault and / or mechanical fault is eliminated, the train control system is restored to control the turnout, and the emergency control system of the rail transit turnout switch machine is isolated.

[0029] Optionally, the emergency control method for the rail transit turnout switch machine further includes: comparing and analyzing the real-time collected action time of the switch machine in the turnout area with historical data to determine whether there is any abnormal risk; wherein, if the collected action time of the switch machine in the turnout area exceeds 8 seconds, it is determined that there is an abnormality in the switch machine in the turnout area.

[0030] Compared with the prior art, the emergency control system and method for railway turnout switching machines provided by the present invention have at least the following beneficial effects:

[0031] By adding video information acquisition devices, the fixed, reverse, and four-way states of turnouts can be quickly and intuitively observed, as well as factors affecting turnout switching such as foreign objects on the switch points and main rail points. This allows for the determination of the switching status of turnout turning devices and provides an intuitive basis for emergency response plans.

[0032] Secondly, an emergency converter, in addition to the turnout switching power of the switch machine, was designed as a redundant power unit. When the turnout control indication circuit of the train control system malfunctions or cannot rotate, the emergency converter is controlled by the integrated backup panel to provide emergency power to switch the turnout, thereby improving the efficiency of turnout fault state switching.

[0033] Meanwhile, without altering the existing switch machine structure, an independent emergency converter was added as a backup power unit, replacing the existing manual turnout operation. Personnel changed from actual on-site operation to indoor button control, avoiding the personal dangers, physical exertion, and complex communication issues caused by manual turnout operation. Furthermore, the operational handling process for turnout malfunctions or anomalies was optimized, improving on-site confirmation efficiency. Finally, through video information collection and existing data, the status of the turnout can be predicted in advance, enabling preventative maintenance and repairs. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the installation of the outdoor portion of the emergency control system for rail transit turnouts of the present invention.

[0035] Figure 2 This is a connection diagram of the emergency control system for rail transit turnout switching machines according to the present invention;

[0036] Figure 3 This is a flowchart of the emergency control method for a railway turnout switch machine according to the present invention. Detailed Implementation

[0037] The following will be combined with the appendix in the embodiments of the present invention. Figure 1 ~Attached Figure 3 The technical solutions, structural features, objectives and effects achieved in the embodiments of the present invention will be described in detail.

[0038] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the purpose of illustrating the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in the present invention, provided that they do not affect the effects and objectives that the present invention can produce.

[0039] It should be noted that, in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only the expressly listed elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0040] Rail transit turnouts come in various types, commonly including single-acting, double-acting, and compound-interchange turnouts. However, they can all be broken down into a simple single-acting turnout for study. A single-acting turnout consists of three units: a switch machine, a connecting section, and a frog and guard rails. The most critical and trouble-prone part of the turnout is the switch machine. Specifically, for example... Figure 1 As shown, the turnout area includes a switch rail 1, a stock rail 2, and a switch machine 3. The switch machine 3 is the power unit for turnout switching, which moves the switch rail 1, causing the first switch rail 11 to either come into contact with or separate from the corresponding first stock rail 21, and the second switch rail 12 to either come into contact with or separate from its corresponding second stock rail 22. This allows trains to travel from the first track I to the second track II or from the second track II to the first track I, thus guiding trains to run along the main line or siding.

[0041] When a turnout malfunctions, the existing turnout malfunction handling procedure is as follows: If the turnout cannot be operated due to a signal system malfunction, an obstacle in the turnout area preventing turnout switching, or the turnout indicator lights malfunctioning or failing to correctly display the turnout position, it is necessary to manually operate the turnout in the track area. Before and after going down to the track, personnel need to perform the following preparations and work:

[0042] ① Ask the dispatcher or depot / parking lot dispatcher for permission and set up protection before leaving the line;

[0043] ② Bring all necessary tools: circuit breaker padlock key, hand crank, hook lock, hook lock key, wrench, signal light, walkie-talkie, flashlight, etc.

[0044] ③Safety clothing: Personnel entering the line section must wear insulated shoes, fluorescent identification clothing, and gloves, etc.

[0045] ④ Hand-cranked turnouts need to comply with six conditions: inspection, loosening, reversing, locking, testing, and reporting, commonly known as the "six steps of hand-cranked turnouts".

[0046] Therefore, it can be concluded that the current fault handling process of rail transit turnout switch machines has problems such as strong reliance on manual labor, low efficiency, and high safety risks.

[0047] To address the problems existing in the fault handling process of turnout switching machines, this invention provides an emergency control system 100 for rail transit turnout switching machines, such as... Figure 1 and Figure 2 As shown, it includes: a video information acquisition device 101, which is installed in the outdoor track area and faces the turnout area (e.g., Figure 1 As shown, a video information acquisition device 101 is used to collect equipment information in the turnout area in real time and obtain the status of the turnout area; a comprehensive backup panel 102, which is set in the comprehensive control room, is used to collect operation commands generated based on the status of the turnout area, and judge whether the operation commands are valid according to the judgment principle, and send valid operation commands; several emergency converters 103, which are set outdoors and connected to the comprehensive backup panel 102 and the switch machine 3 located in the turnout area respectively, are used to receive the valid operation commands and control the start, stop and rotation direction of the switch machine 3 according to the valid operation commands. By setting the video information acquisition device 101, the fixed, reverse and four-way states of the turnout, as well as the factors affecting the turnout switching such as foreign objects on the switch rail and the main rail tip, can be quickly and intuitively observed, and the switching status of the turnout switch machine can be judged; at the same time, the emergency converters 103 provide redundant power to the switch machine 3, improving the efficiency of turnout fault state switching. The emergency control system 100 for rail transit turnout switching machines is connected to a fiber optic ring network and is independent of other systems (such as train control system, signaling system, etc.). The system not only has the functions of remote inspection of turnout area and emergency remote operation of turnout, but also has the functions of operation and video recording of turnout area, which reduces the dependence on manual labor and has the advantages of high efficiency and high safety in relieving turnout faults.

[0048] Specifically, such as Figure 1 and Figure 2 As shown, the video information acquisition device 101 includes several video cameras 111. Each video camera 111 is installed on a pole at the top of the tunnel or on the side of the track in the outdoor turnout area, and is aimed at each turnout area. It records the equipment information of key areas of the turnout area in real time without interruption. In the event of a turnout failure, the integrated backup panel 102 selects the turnout, and the video display 122 jumps to the video camera 111 corresponding to the selected turnout area according to the selected turnout number. The equipment information includes the position of the switch rail 1, the track clearance between the switch rail 1 and the stock rail 2, and the switching stroke and operation time of the switch machine 3. The rail transit turnout emergency control system 100 also includes a video operation recording and storage device 106, which is connected to the video information acquisition device 101 and the integrated backup panel 102 respectively, and is used to store the equipment information of the turnout area collected in real time and all valid operation commands sent by the integrated backup panel.

[0049] Furthermore, the video camera 111 can also intelligently identify and assist in judging factors affecting turnout switching within the monitored turnout area, in addition to train passage. When a turnout cannot be switched, it can assist in the preliminary determination and location of the fault cause, and can also be used for routine turnout maintenance. Factors affecting turnout switching include two categories: mechanical faults and electrical faults. Mechanical faults include: the turnout not fully engaged (e.g., foreign objects at the turnout tip); the turnout fully engaged, but the detection rod notch is not in place; the turnout cannot be unlocked, and the locking block cannot retract; the turnout cannot be locked, and the external locking device cannot fully lock. Other faults include: the switch rail not fitting tightly to the stock rail, the switch rail being damaged, the switch rail being difficult to operate, and the switch rail not fitting tightly to the slide plate. Electrical faults include: the starting circuit failing to supply power normally; the switch machine motor malfunctioning; diode or other device malfunctions in the control circuit loop; resistor or capacitor malfunctions in the indication circuit; and open circuits in the control or indication lines.

[0050] Among them, such as Figure 2 As shown, the integrated backup panel 102 includes: a station yard panel 121, which displays a station yard plan and the positioning and reversing information of the turnouts. The interface layout of the station yard panel 121 is consistent with the station yard interface of the dispatching console. A video display 122, which is connected to the video information acquisition device 101, is used to display the selected turnout area in real time. That is, the video display 122 can jump to the camera 111 corresponding to the selected turnout area according to the selected turnout number; an acquisition and judgment unit 123, which stores the judgment principle and is used to judge whether the operation command is valid; and a power switching unit 124, which is connected to the emergency converter 103, is used to send the valid operation command.

[0051] Furthermore, such as Figure 2 As shown, the integrated backup panel 102 also includes: several status indicator lights 125, which are set in the turnout area of ​​the station yard plan to display turnout status information; several non-automatic reset buttons 126, including a turnout button, a positioning control button, a reversing control button, and a conversion power button. The turnout button is used to select the turnout number displayed on the video display 122; the positioning control button is used to move the turnout to the positioning state; the reversing control button is used to move the turnout to the reversing state; and the conversion power button is used to connect the conversion power supply of the emergency converter 103. The integrated backup panel 102 is connected to the signaling system and the turnout combination control cabinet via interlocking equipment. The turnout positioning and reversing information on the integrated backup panel 102 are directly obtained from the signaling system or the indoor turnout combination control cabinet, allowing for a direct display of the status of all turnouts in the station.

[0052] Based on the integrated backup panel 102, the judgment principles include: Principle 1, the switching action power button is in the pressed state; Principle 2, the positioning control button or the reversing control button is in the pressed state; Principle 3, only one turnout button is in the pressed state; when all of Principle 1 to Principle 3 are satisfied, the control command is valid; when any of Principle 1 to Principle 3 is not satisfied, the control command is invalid.

[0053]

[0054] Table 1. Validity Judgment Table for Comprehensive Backup Disk Operation Commands

[0055] Specifically, the validity judgment table for the integrated backup control command is shown in Table 1. In this table, 1 indicates that the button is pressed and 0 indicates that the button is released. Taking number 1 as an example, the emergency switching power status is 1, indicating that the switching action power button is pressed, that is, the switching action power is on; the total positioning is 0, indicating that the positioning operation button is released, and the total reverse position is 0, indicating that the reverse operation button is released, that is, the turnout is not selected; the selected turnout number is 0, indicating that the turnout button is released, that is, the turnout number is not selected, so the control command is invalid. Furthermore, "multiple groups" in Table 1 mainly means that multiple groups of turnouts cannot be operated at the same time; only a single turnout can be selected. Simultaneous selection of multiple groups of turnouts is not valid. Its purpose is to limit the turnout starting current and prevent multiple incorrect operations.

[0056] Among them, such as Figure 1 As shown, the emergency converter 103 is installed outside the outdoor switch machine 3 and is connected to the motor reducer inside the hand-cranked turnout socket. It is used to provide power for turnout switching in emergency situations. The emergency converter 103 can control its start, stop and rotation direction according to the valid operating commands sent by the integrated backup panel 102. It can also adjust its torque conditions according to different types of turnout switches to avoid damage to the switch machine caused by excessive or insufficient force. It also has overload protection and automatic stop functions. When the set torque is reached or resistance is encountered, it will automatically stop rotating to avoid damage to the motor.

[0057] Furthermore, the emergency converter 103 includes three modes: isolation mode, emergency conversion mode, and locking mode. Specifically, when the train control system is working normally, the emergency converter 103 is in the isolation mode, in which the emergency converter 103 has no power and is not obstructed; when the train control system or the switch machine power system fails, the emergency converter 103 activates the emergency conversion mode, in which the switch machine 3 is positioned or reversed according to valid operating commands; when the switch machine 3 is in position, the emergency converter 103 switches to the locking mode, in which the switch machine 3 cannot rotate.

[0058] like Figure 2 As shown, the emergency converters 103 are connected in series via optical fibers to form a ring network, and the video camera 111 in each of the turnout areas is connected to its adjacent emergency converter 103. In a specific embodiment, the communication path of the emergency converter 103 is controlled by an optical switch in a network communication cabinet 201 located in the signal room, and the integrated backup disk 102 and video operation recording storage device 106 located in the integrated control room are connected to the optical switch in the network communication cabinet 201 via network cables or optical fibers. The rail transit turnout switch machine emergency control system 100 provided by the present invention is connected via an optical fiber ring network and is independent of other systems (such as train control systems), reducing dependence on other systems.

[0059] like Figure 2 As shown, a power supply is also provided in the signal control room. This power supply includes an independently configured working power supply 104 and a switching power supply 105. The working power supply 104 is connected to the video information acquisition device, the integrated backup panel, and the emergency converter, respectively, to provide working power. The switching power supply 105 is connected to the emergency converter to provide switching power. Specifically, in one embodiment, the first working power supply 141 provided to the emergency converter 104 and the switching power supply 105 are both low-voltage DC 24V power supplies, effectively preventing the risk of personal safety hazards from high-voltage electricity. The second working power supply 142 provided to the video information acquisition device and the integrated backup panel is a 220V power supply. By separating the working power supply 104 and the switching power supply 105, they do not affect each other, ensuring that a fault in any connection point during power supply will not affect the normal operation of other equipment.

[0060] Based on the aforementioned emergency control system 100 for railway turnout switching machines, this invention also provides an emergency control method for railway turnout switching machines, comprising: a video information acquisition device 101 acquiring real-time equipment information of the turnout area, obtaining the status of the turnout area, and determining the fault type of the turnout area; if the fault type is a switch machine fault in the turnout area, then the turnout to be operated is selected through the integrated backup panel 102, and a valid control command is sent to the corresponding emergency converter 103; the emergency converter 103 controls the start, stop, and rotation direction of the switch machine according to the valid control command. If the fault type is a mechanical fault, then an emergency replacement procedure is executed; after the switch machine fault and / or mechanical fault are eliminated, the train control system is restored to control the turnout, and the railway turnout switching machine emergency control system 100 is isolated to prevent any impact on the normal operation of the track.

[0061] Furthermore, based on the real-time acquisition of the switch machine's operating time in the turnout area by the video information acquisition device 101, the operating time of the switch machine in the turnout area is compared and analyzed with historical data to determine whether there is any abnormal risk. Specifically, if the acquired operating time of the switch machine in the turnout area exceeds 8 seconds, it is determined that the switch machine in that turnout area is abnormal. It should be noted that there is a difference between abnormality and malfunction. An abnormality means that the switch machine 3 can still be used normally, but the effect is significantly different from normal. This could be due to factors such as high frictional resistance at the switch rail, deterioration of the performance of internal components of the switch machine, or insufficient motor power. A malfunction, on the other hand, means that the switch machine 3 is completely inoperable.

[0062] In one specific embodiment, such as Figure 3 As shown, when the equipment information of the turnout area collected by the video information acquisition device 101 is displayed on the video display 122, it is found that the turnout cannot be switched. The following steps are performed:

[0063] S1. Select the turnout to be operated through the integrated backup panel 102;

[0064] S2. Remotely inspect the factors affecting turnout switching in the turnout area via video display 122;

[0065] S3. Determine if the switch machine is faulty; if it is, proceed to step S5; if it is not, proceed to step S4.

[0066] S4. Obtain equipment information for the corresponding turnout area through the corresponding video camera 111, check for foreign objects or ice and snow disasters in the turnout area switch rail area, and if they are found, activate other contingency plans; if it is a mechanical failure, execute the emergency replacement procedure.

[0067] S5. The control operator and safety officer jointly confirm the turnout number and press the conversion action power button to operate the turnout emergency converter 103.

[0068] S6. After the turnout is switched to the correct position, the control operator and the safety officer use the video information acquisition device to confirm whether the turnout tip is in close contact, that is, to confirm whether the turnout position is correct. If the turnout tip is in close contact (i.e., the turnout position is correct), the turnout is locked. If the turnout tip is not in close contact (i.e., the turnout position is incorrect), the status of the turnout area is reconfirmed.

[0069] S7. Receive the vehicle according to the vehicle reception procedure.

[0070] In another specific embodiment, it also includes S8: when the maintenance of the switch machine 3 is confirmed by the video camera 111, the integrated control operator and the safety officer jointly confirm the turnout number and isolate the rail transit turnout switch machine emergency control system 100 to restore normal operation.

[0071] In summary, the emergency control system and method for railway turnout switching machines provided by this invention, by adding a video information acquisition device 101, can quickly and intuitively observe the fixed, reverse, and four-way states of the turnout, as well as factors affecting turnout switching such as foreign objects on the switch rail and main rail tip, and determine the switching status of the turnout switching device, providing an intuitive basis for emergency response plans.

[0072] Secondly, an emergency converter 103, in addition to the turnout switching power of the switch machine, was designed as a redundant power unit. When the turnout control indication circuit of the train control system malfunctions or cannot rotate, the emergency converter 103 is controlled by the integrated backup panel 102 to provide emergency power to switch the turnout, thereby improving the efficiency of turnout fault state switching.

[0073] Meanwhile, without altering the existing switch machine structure, an independent emergency converter 103 was added as a backup power unit, replacing the existing manual turnout operation. Personnel changed from actual on-site operation to indoor button control, avoiding the personal dangers, physical exertion, and complex communication issues caused by manual turnout operation. Furthermore, the operational handling process for turnout malfunctions or abnormalities was optimized, improving on-site confirmation efficiency. Finally, through video information collection and existing data, the status of the turnout can be predicted in advance, enabling preventative maintenance and repairs.

[0074] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. An emergency control system for a rail transit turnout switch machine, characterized in that, include: A video information acquisition device is installed outdoors in the track area and faces the turnout area. It is used to collect equipment information of the turnout area in real time and obtain the status of the turnout area. The video information acquisition device includes several video cameras. Each video camera is installed on a pole on the top of the tunnel or the side of the track in the outdoor turnout area and is aimed at each turnout area. It collects the equipment information in real time, including the position of the switch rail, the gap between the switch rail and the stock rail, and the switching stroke and operation time of the switch machine. The integrated backup panel, located in the integrated control room, is used to collect control commands generated based on the status of the turnout area obtained by the video information acquisition device, determine the validity of the control commands according to the judgment principles, and send valid control commands. The integrated backup panel includes a collection and judgment unit storing the judgment principles for determining the validity of the control commands. The integrated backup panel also includes several non-automatic reset buttons, including a turnout button, a positioning control button, a reversing control button, and a switching action power button. The judgment principles include: Principle 1: The switching action power button is pressed; Principle 2: Either the positioning control button or the reversing control button is pressed; Principle 3: Only one turnout button is pressed. When all of Principles 1 to 3 are satisfied, the control command is valid; when any one of Principles 1 to 3 is not satisfied, the control command is invalid. Several emergency converters, installed outdoors and connected to the integrated backup panel and the corresponding switch machine in the turnout area, are used to receive valid operating commands and control the start, stop, and rotation direction of the switch machine according to the valid operating commands. Each emergency converter is connected to a motor reducer inside the hand-cranked turnout socket to provide power for turnout switching in emergency situations. The emergency converter includes three modes: isolation mode, emergency switching mode, and locking mode. When the train control system is working normally, the emergency converter is in the isolation mode, in which it has no power and is not obstructed. When the train control system or the switch machine power system fails, the emergency converter activates the emergency switching mode, in which it performs positioning or reversing operations on the switch machine according to valid operating commands. Once the switch machine is in position, the emergency converter switches to the locking mode, in which the switch machine cannot rotate. The system includes an independently configured operating power supply and a switching power supply. The operating power supply is connected to the video information acquisition device, the integrated backup disk, and the emergency converter, respectively, to provide operating power. The switching power supply is connected to the emergency converter to provide switching power.

2. The emergency control system for rail transit turnout switching machines as described in claim 1, characterized in that, The integrated backup disk includes: The station platform displays the station layout plan and the positioning and reversing information of the turnouts; A video display, connected to the video information acquisition device, is used to display the selected turnout area in real time; A power switching unit, which is connected to the emergency converter, is used to send the effective control command.

3. The emergency control system for rail transit turnout switching machines as described in claim 2, characterized in that, The integrated backup disk also includes: Several status indicator lights are set in the turnout area of ​​the station's layout plan to display turnout status information.

4. The emergency control system for rail transit turnout switching machines as described in claim 2, characterized in that, The integrated backup panel is connected to the signal system and the turnout combination control cabinet respectively through interlocking equipment. The turnout positioning information and reversing information on the integrated backup panel are directly obtained from the signal system or the indoor turnout combination control cabinet.

5. The emergency control system for rail transit turnout switching machines as described in claim 1, characterized in that, The emergency converters are connected in series via optical fibers to form a ring network, and the video camera in each turnout area is connected to its adjacent emergency converter.

6. The emergency control system for rail transit turnout switching machines as described in claim 1, characterized in that, The operating power supply provided to the emergency converter and the power supply for the conversion operation are both low-voltage DC 24V power supplies.

7. The emergency control system for rail transit turnout switching machines as described in claim 1, characterized in that, Also includes: A video operation recording and storage device is connected to the video information acquisition device and the integrated backup panel, respectively, and is used to store the equipment information of the turnout area acquired in real time and all valid operation commands sent by the integrated backup panel.

8. An emergency control method for a rail transit turnout switch machine, implemented using the rail transit turnout switch machine emergency control system as described in any one of claims 1 to 7, characterized in that, include: The video information acquisition device collects equipment information in the turnout area in real time, obtains the status of the turnout area, and determines the fault type of the turnout area; If the fault type is a switch machine fault in the turnout area, the turnout to be operated is selected through the integrated backup panel, and a valid operation command is sent to the corresponding emergency converter. The emergency converter controls the start, stop, and rotation direction of the switch machine according to the valid operating command.

9. The emergency control method for a rail transit turnout switch machine as described in claim 8, characterized in that, After the switch machine controls the turnout to the correct position, the video information acquisition device confirms whether the turnout tips are in close contact. If the turnout tips are in close contact, the turnout is locked. If the turnout tips are not in close contact, the status of the turnout area is reconfirmed.

10. The emergency control method for a rail transit turnout switch machine as described in claim 8, characterized in that, If the fault type is a mechanical fault, an emergency replacement procedure is executed; after the switch machine fault and / or mechanical fault are eliminated, the train control system is restored to control the turnout, and the emergency control system of the rail transit turnout switch machine is isolated.

11. The emergency control method for a rail transit turnout switch machine as described in claim 8, characterized in that, Also includes: The real-time action time of the switch machine in the turnout area is compared and analyzed with historical data to determine whether there is any abnormal risk; if the action time of the switch machine in the turnout area exceeds 8 seconds, it is determined that there is an abnormality in the switch machine in the turnout area.

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