Train operation control method and device, electronic equipment, storage medium, program product and train

Abstract

The invention provides a train operation control method and device, electronic equipment, a storage medium, a program product and a train, and is applied to the technical field of railway vehicles. The train operation control method comprises the steps that in response to a received early warning signal indicating that a traction motor has a short circuit fault, a first control instruction used for controlling a train to operate at a first limiting speed is generated, the first limiting speed is smaller than the normal operation speed of the train, and a second control instruction used for controlling the train to operate at a second limiting speed is generated; the early warning signal is generated in response to thermal safety state data which are acquired by a safety level sensor configured on the traction motor and meet a preset condition; and under the condition that the train is controlled to run at the first limiting speed according to the first control instruction, a second control instruction used for controlling the train to run according to the target running mode is generated according to the temperatures collected by at least one control level sensor configured on the traction motor, so that the train is controlled to run according to the target running mode.

Description

Technical Field

[0001] This disclosure relates to the field of rail vehicle technology, and more specifically, to a train operation control method, device, electronic equipment, storage medium, program product, and train. Background Technology

[0002] Traction motors are widely used in rail transit systems. For example, traction motors can include permanent magnet motors. Inter-turn short-circuit faults in traction motors can cause them to malfunction, disrupting train operations and potentially even causing fires. Therefore, timely and accurate detection of inter-turn short-circuit faults in traction motors and appropriate emergency response are crucial for improving train operation order and safety.

[0003] However, the accuracy and timeliness of detecting short-turn faults in traction motors are insufficient, affecting the initiative of train operation control. Summary of the Invention

[0004] In view of the above, embodiments of this disclosure provide a train operation control method, apparatus, electronic device, storage medium, program product, and train.

[0005] A first aspect of this disclosure provides a train operation control method. The method includes: in response to receiving a warning signal indicating a short-circuit fault in a traction motor, generating a first control command for controlling the train to operate at a first limited speed, wherein the first limited speed is less than the train's normal operating speed, and the warning signal is generated in response to thermal safety status data collected from safety-level sensors disposed on the traction motor meeting predetermined conditions; and, while controlling the train to operate at the first limited speed according to the first control command, generating a second control command for controlling the train to operate according to a target operating mode based on temperatures collected from at least one control-level sensor disposed on the traction motor, thereby controlling the train to operate according to the target operating mode.

[0006] According to embodiments of this disclosure, a second control command for controlling the train to operate in a target operating mode is generated based on the temperatures collected from at least one control-level sensor configured on the traction motor, including at least one of the following: in response to the temperatures collected from at least one control-level sensor configured on the traction motor being all less than their respective temperature thresholds, a second control command for controlling the train to continue operating at a first limited speed until reaching a first target position is generated; or in response to the presence of a temperature greater than or equal to a temperature threshold among the temperatures collected from at least one control-level sensor configured on the traction motor, a second control command for controlling the train to operate at a second limited speed is generated, wherein the second limited speed is less than the first limited speed.

[0007] According to an embodiment of this disclosure, when controlling the train to run at a second limited speed, the method further includes: in response to the temperature collected by at least one control-level sensor configured on the traction motor being less than its respective temperature threshold, generating a second control command for controlling the train to continue running at the second limited speed until reaching a second target position.

[0008] According to an embodiment of this disclosure, when controlling the train to run at a second limited speed, the method further includes: in response to the presence of a temperature greater than or equal to a temperature threshold in the temperatures collected from at least one control-level sensor configured on the traction motor, generating a second control command for controlling the train to run at a third limited speed, wherein the third limited speed is less than the second limited speed.

[0009] According to an embodiment of this disclosure, when controlling the train to run at a third limited speed, the method further includes: in response to the temperature collected by at least one control-level sensor configured on the traction motor being less than its respective temperature threshold, generating a second control command for controlling the train to continue running at the third limited speed until reaching a third target position, wherein the distance between the third target position and the end point of the current train is greater than the distance between the second target position and the end point of the current train.

[0010] According to embodiments of this disclosure, when controlling the train to run at a third limited speed, the method further includes: generating a second control command for controlling the train to suspend operation in response to the presence of a temperature greater than or equal to a temperature threshold in the temperatures collected from at least one control-level sensor configured on the traction motor.

[0011] According to embodiments of this disclosure, the safety-grade sensor includes at least one of a temperature-sensing cable or a temperature-sensing resistor, and the warning signal is generated and sent to the train control unit in response to an impedance value collected from the safety-grade sensor configured on the traction motor being greater than or equal to an impedance threshold.

[0012] A second aspect of this disclosure provides a train operation control device, including a first generation module and a second generation module. The first generation module is configured to generate a first control command for controlling the train to operate at a first limited speed in response to receiving a warning signal indicating a short-circuit fault in the traction motor. The first limited speed is less than the train's normal operating speed. The warning signal is generated in response to thermal safety status data collected from safety-level sensors configured on the traction motor meeting predetermined conditions. The second generation module is configured to, when controlling the train to operate at the first limited speed according to the first control command, generate a second control command for controlling the train to operate according to a target operating mode based on temperatures collected from at least one control-level sensor configured on the traction motor, thereby controlling the train to operate according to the target operating mode.

[0013] A third aspect of this disclosure provides an electronic device, including: one or more processors; and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the method described above.

[0014] A fourth aspect of this disclosure provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, cause the processor to perform the method described above.

[0015] A fifth aspect of this disclosure provides a computer program product including a computer program that, when executed by a processor, implements the method described above.

[0016] A sixth aspect of this disclosure provides a train, including a safety-level sensor, a control-level sensor, and a train control unit. The safety-level temperature sensor is disposed on a traction motor and configured to collect thermal safety status data of the traction motor. The control-level sensor is disposed on the traction motor and configured to collect the temperature of the traction motor. The train control unit is configured to: in response to receiving a warning signal indicating a short-circuit fault in the traction motor, generate a first control command for controlling the train to operate at a first limited speed, wherein the first limited speed is less than the normal operating speed of the train, and the warning signal is generated in response to the thermal safety status data meeting predetermined conditions; and, when controlling the train to operate at the first limited speed according to the first control command, generate a control command for controlling the train to operate according to a target operating mode based on the temperature of the traction motor, thereby controlling the train to operate according to the target operating mode.

[0017] According to embodiments of this disclosure, the safety-grade sensor includes at least one of the following: a temperature-sensing cable or a temperature-sensing resistor; and / or a safety-grade temperature sensor disposed at at least one of the coil end, lead end, or effective side of the core slot of the traction motor; and / or the control-grade sensor includes at least one of the following: a core temperature sensor, a drive-end bearing sensor, or a non-drive-end bearing sensor.

[0018] According to embodiments of this disclosure, thermal safety status data collected by safety-grade sensors on the traction motor can promptly generate an early warning signal indicating a short-circuit fault in the traction motor. This improves the timeliness of short-circuit fault warnings. Based on the warning signal, speed limits are implemented on the current train, reducing the risk of further fault escalation and the possibility of fire. Since the heat generated by a traction motor short-circuit fault requires a certain amount of time to dissipate, when the train is operating at the speed limit, combining the temperature data collected by control-grade sensors on the traction motor can further confirm the short-circuit fault, reducing misjudgments that might occur relying solely on the warning signal. This improves the accuracy of determining a traction motor short-circuit fault and enhances the safety of train operation. Attached Figure Description

[0019] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0020] Figure 1 An exemplary system architecture to which the train operation control method of this disclosure can be applied is illustrated schematically;

[0021] Figure 2 A flowchart illustrating a train operation control method according to an embodiment of the present disclosure is shown schematically.

[0022] Figure 3 The diagram schematically illustrates the arrangement of the temperature sensing cable on the traction motor according to an embodiment of the present disclosure;

[0023] Figure 4 A schematic block diagram of a train operation control device according to an embodiment of the present disclosure is shown.

[0024] Figure 5 A block diagram of an electronic device suitable for implementing a train operation control method according to an embodiment of the present disclosure is shown schematically. Detailed Implementation

[0025] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0027] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0028] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0029] Traction motors, such as permanent magnet motors, have advantages such as high power density and high energy efficiency, and are widely used in rail transit systems. However, in the stator windings of permanent magnet electrodes, electrical connections can occur between adjacent turns that should be insulated from each other due to insulation damage or other reasons. This creates inter-turn short circuits, resulting in adverse effects such as increased current, localized overheating, uneven magnetic field distribution, and decreased performance of the permanent magnet motor.

[0030] (1) Increased current: A short circuit between turns of the traction motor will cause a circulating current to form in the short-circuited turns, resulting in an increase in the current in the stator winding. If the current in the stator winding exceeds its rated current, it will cause the traction motor to generate additional heat.

[0031] (2) Local overheating: The increased current in the stator winding of the traction motor when a short circuit occurs will generate additional heat, causing local overheating inside the traction motor. This will accelerate the aging of the insulation layer between the wire turns at the overheated location, and in severe cases, it may even cause the stator winding to burn out.

[0032] (3) Uneven magnetic field distribution: Some turns of the stator winding in the traction motor have inter-turn short circuit faults, which reduces the uniformity of the distributed magnetic field formed by the traction motor, thereby causing the torque of the traction motor to deviate and thus reducing its own operating performance.

[0033] (4) Degradation of motor performance: Inter-turn short circuit of traction motor will reduce the output power of traction motor, reduce operating efficiency, and worsen power factor. In severe cases, it may cause traction motor to fail to operate normally, affecting train operation order and even causing fire.

[0034] Traction motor short-turn fault detection methods may include:

[0035] (1) Induction method: Using the principle of electromagnetic induction, a short circuit detector is placed across the slot of the stator winding of the traction motor. By detecting whether the iron piece on the slot of the short circuit detector vibrates, it can be determined whether there is a short circuit fault in the traction motor.

[0036] (2) Observation method: By observing whether the insulation layer of the stator winding coil end and the wire slot is damaged, burnt, or has an odor, it can be determined whether the traction motor has a short circuit fault.

[0037] (3) Multimeter or megohmmeter test method: Use a multimeter or megohmmeter to test the insulation resistance between any two phase stator windings of the traction motor. If the insulation resistance is extremely small or even zero, the traction motor may have an inter-turn short circuit fault.

[0038] (4) Temperature detection method: Under the condition that the traction motor runs unloaded for a predetermined period of time, check whether the temperature of each part of the stator winding exceeds the normal temperature. If the temperature of the stator winding exceeds the normal temperature, it indicates that the traction motor may have an inter-turn short circuit fault.

[0039] (5) Power-on test method: Use an ammeter to test the current in the stator winding. If the current in the stator winding exceeds the normal current value, it indicates that the traction motor may have an inter-turn short circuit fault.

[0040] However, the above detection methods lack accuracy and timeliness in detecting short-turn faults in traction motors, which affects the initiative in train operation control.

[0041] In view of this, the present disclosure provides a train operation control method, device, electronic equipment, storage medium, program product, and train. This method, to a certain extent, solves the problems of rapid fault propagation leading to operational disruptions and train fires caused by the inability to promptly and accurately determine traction motor short-turn faults. It can improve the timeliness and accuracy of traction motor short-turn fault diagnosis, guide train emergency response, and ensure operational order and safety.

[0042] Figure 1 An exemplary system architecture to which the train operation control method of this disclosure can be applied is illustrated schematically. It should be noted that... Figure 1 The examples shown are merely examples of system architectures that can be applied to the embodiments of this disclosure, in order to help those skilled in the art understand the technical content of this disclosure, but do not mean that the embodiments of this disclosure cannot be used in other devices, systems, environments or scenarios.

[0043] like Figure 1 As shown, the system architecture 100 according to this embodiment may include a host computer display unit 101, an operation unit 102, a train control unit 103, a traction control unit 104, a braking unit 105, and a data acquisition unit 106.

[0044] The host computer display unit 101 is configured to display real-time train operation information and fault information. Operation information may include at least one of the following: train speed, target position, direction of travel, distance traveled, and travel duration. Fault information may include traction motor short-circuit faults or other fault information. The host computer display unit 101 can also function as an interactive page. Train drivers and conductors can input control commands for the train through the host computer display unit 101, such as at least one of the following commands: traction command, braking command, etc.

[0045] The operation unit 102 is configured as the source of train control commands. The driver and conductor can input control commands on the operation unit 102 based on the operating information and fault information displayed on the host computer display unit 101, and the train will execute the corresponding operations according to the input control commands.

[0046] The train control unit 103, as the control center of the train, is configured to receive control commands from the operation unit 102 and send the control commands to execution units, such as at least one of the execution units including the traction control unit 104 and the braking unit 105. The train control unit 103 is also configured to receive operating status information from the execution units and data collected by the acquisition unit 106, and report the operating status information from the execution units and the collected data to the host computer display unit 101, so that the driver and conductor can input control commands for the train based on the operating status information from the execution units and the data collected by the acquisition unit 106.

[0047] The traction control unit 104 is configured to execute the train's traction commands and drive the traction motor. The traction motor, such as the permanent magnet motor in this embodiment, may include a stator and a rotor. Safety-level sensors and control-level sensors are mounted on the traction motor. Safety-level sensors may include temperature-sensing cables. Control-level sensors may include at least one of the following: a transmission end bearing sensor, a non-transmission end bearing sensor, a core temperature sensor, and a photosensitive sensor. The traction control unit 104 can also collect thermal safety status data from the safety-level sensors, such as impedance data and temperature data, and send this data to the train control unit 103, enabling the train control unit 103 to issue a warning to the host computer display unit 101.

[0048] The braking unit 105 is configured to execute the braking command of the train and, in conjunction with the traction command of the traction control unit 104 issued by the train control unit 103, control the train's running speed.

[0049] The acquisition unit 106 is configured to acquire temperature data collected by the control-level sensors on the traction motor in real time and send the temperature data to the train control unit 103, so that the train control unit 103 can send an alarm to the host computer display unit 101 based on the threshold temperature set on each sensor.

[0050] It should be understood that Figure 1 The number of systems, units, and devices shown is merely illustrative. The number of systems, units, and devices can be increased or decreased according to the actual application scenario.

[0051] Figure 2 A flowchart illustrating a train operation control method according to an embodiment of the present disclosure is shown schematically.

[0052] like Figure 2 As shown, the method 200 may include operations S210~S220.

[0053] In operation S210, in response to receiving a warning signal indicating a short circuit fault in the traction motor, a first control command is generated to control the train to run at a first limited speed.

[0054] The train in this embodiment can be a train traveling at a normal operating speed, for example, a train with a normal operating speed of 300 km / h. The first speed limit is less than the train's normal operating speed. The first speed limit can be 200 km / h, etc.

[0055] The traction motor may include a permanent magnet motor. The warning signal is generated in response to predetermined conditions being met by thermal safety status data collected from safety-grade sensors configured on the traction motor. The safety-grade sensors may include at least one of the following: temperature-sensing cables, temperature-sensing resistors, etc. The thermal safety status data reflects the thermal safety status of the safety-grade sensors and may include impedance data and temperature data, etc. The predetermined conditions may be used to determine whether a short-turn fault has occurred in the traction motor. The warning signal is generated based on the thermal safety status information meeting the predetermined conditions. Upon receiving the warning signal, the train control unit controls the train to operate at a first limit speed lower than the normal operating speed.

[0056] For example, several safety-grade sensors, such as several turns of temperature-sensing cable, can be installed inside the traction motor. When a short-circuit fault occurs in the traction motor, the temperature-sensing cable will melt, and the thermal safety status data will change. For example, the impedance data of the temperature-sensing cable will increase sharply. When the impedance data is greater than or equal to a predetermined impedance, the train control unit receives a warning signal indicating a short-circuit fault in the traction motor and uploads the warning signal to the host computer display unit. The driver and conductor can then input a first control command to the train based on the warning signal. Based on the first control command, the train control unit controls the train to disconnect traction, apply braking to reduce speed, and the train travels at a first speed limit. For example, if the train's normal operating speed is 300 km / h, after receiving the warning signal for a short-circuit fault in the traction motor, the train control unit controls the train to reduce speed urgently according to the first control command, and the train will run at a speed of 200 km / h.

[0057] In operation S220, when the train is controlled to run at a first limited speed according to the first control command, a second control command is generated based on the temperature collected from at least one control-level sensor configured on the traction motor to control the train to run in the target operating mode.

[0058] Control-level sensors are used to collect the temperature of the traction motor in real time, and may include at least one of the following: drive-end bearing sensors, non-drive-end bearing sensors, and core temperature sensors. Based on the temperature collected by the control-level sensors, a second control command is generated, such as maintaining the first speed limit or continuing to reduce speed. The train control unit operates according to the target operating mode based on the second control command. The target operating mode indicates the subsequent operating tasks to be performed by the train.

[0059] According to embodiments of this disclosure, thermal safety status data collected by safety-grade sensors on the traction motor can promptly generate an early warning signal indicating a short-circuit fault in the traction motor. This improves the timeliness of short-circuit fault warnings. Based on the warning signal, speed limits are implemented on the current train, reducing the risk of further fault escalation and the possibility of fire. Since the heat generated by a traction motor short-circuit fault takes time to dissipate, when the train is operating at the speed limit, combining this data with temperature data collected by control-grade sensors on the traction motor can further confirm the short-circuit fault, reducing misjudgments that might occur relying solely on the warning signal. This improves the accuracy of locating traction motor short-circuit faults and enhances the safety of train operation.

[0060] While the train is running at the first speed limit, the temperature collected in real time by a control-level sensor on at least one traction motor is monitored. Based on the temperature collected by the control-level sensor, a second control command is generated. The second control command indicates the operating mode to which the train will operate, i.e., the operational task to be performed.

[0061] In a specific embodiment, when the train is controlled to run at a first limited speed, if the temperature collected by at least one control-level sensor of the traction motor is less than its respective temperature threshold, a second control command can be generated to control the train to continue running at the first limited speed until it reaches the first target position.

[0062] The control-level sensors on the traction motor can be installed at different locations inside the permanent magnet motor. Each control-level sensor has its own temperature threshold, which can be set to 80℃~150℃, such as 80℃, 100℃, 120℃, 140℃, 150℃, etc. The temperature threshold of each control-level sensor can be set according to the actual application scenario requirements, and this disclosure does not impose specific limitations.

[0063] During the process of controlling the train to run at the first limited speed, if the temperature collected by each control-level sensor does not exceed its respective temperature threshold, the second control command can be a target operating mode that controls the train to run at the first limited speed to the first target position. The first target position can be the position where the train completes its daily operating task.

[0064] For example, if the temperature collected by each control-level sensor of the traction motor is lower than its respective temperature threshold, the train will be controlled to complete its daily operation at a speed of 200 km / h. After completing its daily operation, the train can return to the depot for further diagnostics and treatment of the traction motor.

[0065] In a specific embodiment, when the train is controlled to run at a first limited speed, if at least one control-level sensor of the traction motor collects a temperature greater than or equal to a temperature threshold, a second control command can be generated to control the train to run at a second limited speed in a target operating mode.

[0066] During the process of controlling the train to operate at the first limited speed, if the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the second control command can be to control the train to decelerate from the first limited speed to the second limited speed and operate at the second limited speed as a target operating mode. The second limited speed can be less than the first limited speed; for example, the second limited speed can be 40 km / h.

[0067] For example, during the process of controlling the train to run at a first limited speed, if the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the train is controlled to run at a speed of 40 km / h.

[0068] According to embodiments of this disclosure, after the traction motor implements speed-limiting measures based on an inter-turn short-circuit alarm signal generated by a safety-grade sensor, the temperature collected by a control-grade sensor can be used to assist the driver in controlling the train in further determining the inter-turn short-circuit fault. If the temperature recovers to within a temperature threshold during speed-limited operation, the train continues to operate at a first speed limit; if the temperature still exceeds the temperature threshold during speed-limited operation, the train is slowed down and operates at a second speed limit. This method can further determine the accuracy of the warning signal after the train has implemented speed-limiting measures, reducing the risk of disrupting the normal operation of the train due to misjudgment, and improving both the order of train operation and the safety of train operation.

[0069] In a specific embodiment, when the train is controlled to run at the second limited speed, if the temperature collected by at least one control-level sensor of the traction motor is less than its respective temperature threshold, a second control command can be generated to control the train to continue running at the second limited speed until it reaches the second target position.

[0070] While the train is running at the second speed limit, the temperature collected in real time by various control level sensors of the traction motor is monitored. When the temperature is below its respective threshold, the second control command can be a target operating mode that controls the train to run at the second speed limit to the second target position. The second target position can be the train's terminus on the current route, etc. At this time, the target operating mode can be a mode in which the train runs at the second speed limit to the second target position and then exits operation.

[0071] For example, if the temperature collected by each control-level sensor is lower than its respective temperature threshold while the train is running at the second limit speed, the train will be controlled to run at a speed of 40 km / h to the end of the train's journey and then withdraw from operation and return to the depot for further diagnosis and treatment of the traction motor.

[0072] According to embodiments of this disclosure, when the train is controlled to run at a second limited speed, in order to further determine inter-turn short-circuit faults, the temperature collected by control-level sensors can continue to assist the driver and conductor. If the temperature recovers to within the temperature threshold during speed-limited operation, the train continues to run at the second limited speed, improving the accuracy of short-circuit fault determination and reducing operational losses while ensuring train safety.

[0073] In a specific embodiment, when the train is controlled to run at a second limited speed, if at least one control-level sensor of the traction motor collects a temperature greater than or equal to a temperature threshold, a second control command can be generated to control the train to run at a third limited speed in a target operating mode.

[0074] While the train is running at the second speed limit, the temperature collected in real time by various control-level sensors is monitored. When the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the second control command can be used to control the train to run at the third speed limit. The third speed limit can be lower than the second speed limit; for example, the second speed limit can be 10 km / h.

[0075] For example, while the train is running at a second limited speed, if the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the train is controlled to run at a speed of 10 km / h.

[0076] According to embodiments of this disclosure, when the train is controlled to run at a second limited speed, in order to further determine the inter-turn short-circuit fault, the temperature collected by the control-level sensors can continue to assist the driver and conductor. If the temperature still exceeds the temperature threshold during speed-limited operation, the train is controlled to continue to reduce its speed to a third limited speed. The above-described multi-level confirmation and handling method for traction motor short-circuit faults can improve the safety of train operation while ensuring the order of train operation.

[0077] In a specific embodiment, when the train is controlled to run at the third limited speed, if the temperature collected by at least one control-level sensor of the traction motor is less than its respective temperature threshold, a second control command can be generated to control the train to continue running at the third limited speed until it reaches the third target position.

[0078] While the train is running at the second speed limit, the temperature collected in real time by the various control level sensors of the traction motor is monitored. When the temperature is below its respective threshold, the second control command can be a target operating mode that controls the train to run at the third speed limit to the third target position. The distance between the third target position and the current train's destination is greater than the distance between the second target position and the current train's destination. The third target position can be a position before the end of the current route. In this case, the target operating mode can be that the train runs at the third speed limit to the third target position and then exits service.

[0079] For example, if the temperature collected by each control-level sensor is lower than its respective temperature threshold while the train is running at the third limit speed, the train will be controlled to run at a speed of 10 km / h to the nearest station and then withdraw from operation, and return to the depot for further diagnosis and treatment of the traction motor.

[0080] According to embodiments of this disclosure, when the train is controlled to run at a third limited speed, in order to further determine inter-turn short-circuit faults, the temperature collected by control-level sensors can continue to assist the driver and conductor. If the temperature recovers to within the temperature threshold during speed-limited operation, the train can continue to run at the third limited speed, which can improve the accuracy of determining short-circuit faults, ensuring train safety while reducing losses in train operation.

[0081] In a specific embodiment, when the train is controlled to run at a third limited speed, if at least one control-level sensor of the traction motor collects a temperature greater than or equal to a temperature threshold, a second control command for controlling the train to suspend operation in a target running mode can be generated.

[0082] While the train is running at the third speed limit, the temperature collected in real time by various control-level sensors of the traction motor is monitored. When the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the second control command can be set to the target operating mode that suspends the train. The target operating mode at this time is the mode in which the train is suspended.

[0083] For example, while the train is running at the third limited speed, if the temperature collected by at least one control-level sensor is greater than or equal to a temperature threshold, the train is controlled to make an emergency stop and a rescue request is made.

[0084] According to embodiments of this disclosure, when the train is controlled to run at a third speed limit, in order to further determine the inter-turn short-circuit fault, the temperature collected by control-level sensors can continue to assist the driver and conductor. If the temperature still exceeds the temperature threshold during speed-limited operation, the train is controlled to stop running. This method can improve the safety of train operation, prevent further spread of the fault, and reduce the risk of fire.

[0085] In a specific embodiment, the safety-grade sensor may include at least one of a temperature-sensing cable or a temperature-sensing resistor. The warning signal is generated and sent to the train control unit by the traction control unit in response to an impedance value collected from the safety-grade sensor configured on the traction motor being greater than or equal to an impedance threshold.

[0086] According to embodiments of this disclosure, when a short-turn fault occurs in the traction motor, the local temperature inside the traction motor rises, causing the temperature-sensing cable installed inside the traction motor to melt and its impedance value to increase sharply. The feedback time of the impedance value of the temperature-sensing resistor is shorter than the temperature diffusion phenomenon after the local temperature rise. Therefore, monitoring the impedance value of the temperature-sensing cable can quickly and timely identify the short-turn fault in the traction motor and apply emergency measures, improving the timeliness of fault identification and preventing further expansion of the fault.

[0087] Continue to refer to Figure 1 and Figure 2 This disclosure also provides a train that may include safety-level sensors, control-level sensors, and a train control unit.

[0088] A safety-grade temperature sensor is configured to collect thermal safety status data of the traction motor. The safety-grade sensor may include a temperature-sensing cable (such as...). Figure 1 (Illustrated in the middle) or at least one of the temperature sensing resistors.

[0089] Figure 3 The diagram schematically illustrates the arrangement of the temperature-sensing cable on a traction motor according to an embodiment of the present disclosure. It should be noted that... Figure 1 and Figure 3 The temperature-sensing cable described is merely one example disclosed, and the safety-grade sensors disclosed herein are not limited to this, and will not be described further here.

[0090] like Figure 3 As shown, the temperature-sensing cable can be configured on the coil end 1, lead end 2, or effective side 3 of the iron core slot of the traction motor. The temperature-sensing cable can be installed at multiple locations on the traction motor, enabling timely response to short-turn faults and improving the timeliness of early warning. The number of temperature-sensing cables can be set according to the actual application scenario; this disclosure does not impose specific limitations.

[0091] The control-level sensor is located on the traction motor and is configured to collect the traction motor's temperature. For example... Figure 1 As shown, the control-level sensor may include at least one of a core temperature sensor, a transmission end bearing sensor, or a non-transmission end bearing sensor.

[0092] The train control unit is configured to: in response to receiving a warning signal indicating a short-circuit fault in the traction motor, generate a first control command to control the train to operate at a first limited speed. The first limited speed is less than the train's normal operating speed. The warning signal is generated in response to predetermined conditions being met by thermal safety status data. While controlling the train to operate at the first limited speed according to the first control command, the unit also generates a control command based on the temperature of the traction motor to control the train to operate in a target operating mode.

[0093] Based on the above-described train operation control method, this disclosure also provides a train operation control device. The following will be combined with... Figure 4 The device is described in detail.

[0094] Figure 4 A schematic block diagram of a train operation control device according to an embodiment of the present disclosure is shown.

[0095] like Figure 4 As shown, the train operation control device 400 may include a first generation module 410 and a second generation module 420.

[0096] The first generation module 410 is configured to generate a first control command for controlling the train to run at a first limited speed in response to receiving a warning signal indicating a short-circuit fault in the traction motor. The first limited speed is less than the train's normal operating speed. The warning signal is generated in response to thermal safety status data collected from a safety-level sensor configured on the traction motor meeting predetermined conditions. In one embodiment, the first generation module 410 may be used to perform the operation S210 described above, which will not be repeated here.

[0097] The second generation module 420 is configured to, when controlling the train to run at a first limited speed according to the first control command, generate a second control command for controlling the train to run according to a target operating mode based on the temperature collected from at least one control-level sensor configured on the traction motor. In one embodiment, the second generation module 420 may be used to perform the operation S220 described above, which will not be repeated here.

[0098] The second generation module 420 may include at least one of the first generation submodule or the second generation submodule.

[0099] The first generation submodule is used to generate a second control command for controlling the train to continue running at a first limited speed until it reaches a first target position in response to the fact that the temperatures collected by at least one control-level sensor configured on the traction motor are all less than their respective temperature thresholds.

[0100] The second generation submodule is used to generate a second control command for controlling the train to run at a target operating mode according to a second limited speed in response to the presence of a temperature greater than or equal to a temperature threshold in the temperatures collected by at least one control-level sensor configured on the traction motor, wherein the second limited speed is less than the first limited speed.

[0101] When controlling the train to run at the second speed limit, the second generation module 420 may include a third generation submodule.

[0102] The third generation module is used to generate a second control command for controlling the train to continue running at a second limited speed until it reaches a second target position in response to the fact that the temperatures collected by at least one control-level sensor configured on the traction motor are all less than their respective temperature thresholds.

[0103] When controlling the train to run at the second speed limit, the second generation module 420 may include a fourth generation submodule.

[0104] The fourth generation submodule is used to generate a second control command for controlling the train to run at a target operating mode according to a third limiting speed in response to the presence of a temperature greater than or equal to a temperature threshold in the temperatures collected from at least one control-level sensor configured on the traction motor. The third limiting speed is less than the second limiting speed.

[0105] When controlling the train to run at the third speed limit, the second generation module 420 may include a fifth generation submodule.

[0106] The fifth generation submodule is used to generate a second control command for controlling the train to continue running at a third limited speed until reaching a third target position in response to the fact that the temperatures collected by at least one control-level sensor configured on the traction motor are all less than their respective temperature thresholds, wherein the distance between the third target position and the end point of the current train is greater than the distance between the second target position and the end point of the current train; or it is used to generate a second control command for controlling the train to suspend operation in response to the fact that there is a temperature greater than or equal to a temperature threshold among the temperatures collected by at least one control-level sensor configured on the traction motor.

[0107] When controlling the train to run at the third speed limit, the second generation module may include a sixth generation submodule.

[0108] The sixth generation submodule is used to generate a second control command for controlling the train to stop running in response to the presence of a temperature greater than or equal to a temperature threshold in the temperatures collected by at least one control-level sensor configured on the traction motor.

[0109] The safety-grade sensor includes at least one of a temperature-sensing cable or a temperature-sensing resistor. The warning signal is generated and sent to the train control unit by the traction control unit in response to an impedance value acquired from a safety-grade sensor located on the traction motor that is greater than or equal to an impedance threshold.

[0110] According to embodiments of this application, any plurality of modules in the first generation module 410 and the second generation module 420 can be combined into one module, or any one of these modules can be split into multiple modules. Alternatively, at least a portion of the functionality of one or more of these modules can be combined with at least a portion of the functionality of other modules and implemented in one module. According to embodiments of this application, at least one of the first generation module 410 and the second generation module 420 can be at least partially implemented as hardware circuitry, such as a field-programmable gate array (FPGA), a programmable logic array (PLA), a system-on-a-chip, a system-on-a-substrate, a system-on-package, an application-specific integrated circuit (ASIC), or any other reasonable means of integrating or packaging circuitry, or implemented in software, hardware, or firmware, or in any appropriate combination of any of these three implementation methods. Alternatively, at least one of the first generation module 410 and the second generation module 420 can be at least partially implemented as a computer program module, which, when run, can perform corresponding functions.

[0111] Figure 5 A block diagram of an electronic device suitable for implementing a train operation control method according to an embodiment of the present disclosure is shown schematically. Figure 5 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments disclosed herein.

[0112] like Figure 5As shown, an electronic device 500 according to an embodiment of the present disclosure includes a processor 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage portion 508 into a random access memory (RAM) 503. The processor 501 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)). The processor 501 may also include onboard memory for caching purposes. The processor 501 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present disclosure.

[0113] RAM 503 stores various programs and data required for the operation of electronic device 500. Processor 501, ROM 502, and RAM 503 are interconnected via bus 504. Processor 501 performs various operations of the method flow according to embodiments of the present disclosure by executing programs in ROM 502 and / or RAM 503. It should be noted that the programs may also be stored in one or more memories other than ROM 502 and RAM 503. Processor 501 may also perform various operations of the method flow according to embodiments of the present disclosure by executing programs stored in said one or more memories.

[0114] According to embodiments of this disclosure, the electronic device 500 may further include an input / output (I / O) interface 505, which is also connected to a bus 504. The electronic device 500 may also include one or more of the following components connected to the input / output (I / O) interface 505: an input section 506 including a keyboard, mouse, etc.; an output section 507 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the input / output (I / O) interface 505 as needed. A removable medium 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 510 as needed so that computer programs read from it can be installed into the storage section 508 as needed.

[0115] According to embodiments of this disclosure, the method flow according to embodiments of this disclosure can be implemented as a computer software program. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable storage medium, the computer program containing program code for performing the methods shown in the flowchart. In such embodiments, the computer program can be downloaded and installed from a network via communication section 509, and / or installed from removable medium 511. When the computer program is executed by processor 501, it performs the functions defined in the system of embodiments of this disclosure. According to embodiments of this disclosure, the systems, devices, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0116] This disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs that, when executed, implement the method according to the embodiments of this disclosure.

[0117] According to embodiments of this disclosure, the computer-readable storage medium can be a non-volatile computer-readable storage medium. Examples include, but are not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this disclosure, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0118] For example, according to embodiments of this disclosure, a computer-readable storage medium may include the ROM 502 and / or RAM 503 described above and / or one or more memories other than ROM 502 and RAM 503.

[0119] Embodiments of this disclosure also include a computer program product comprising a computer program containing program code for performing the methods provided in the embodiments of this disclosure. When the computer program product is run on an electronic device, the program code is used to enable the electronic device to implement the train operation control method provided in the embodiments of this disclosure.

[0120] When the computer program is executed by the processor 501, it performs the functions defined in the system / apparatus of this disclosure embodiments. According to embodiments of this disclosure, the systems, apparatuses, modules, units, etc., described above can be implemented by computer program modules.

[0121] In one embodiment, the computer program may rely on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may also be transmitted and distributed in the form of signals over a network medium, and may be downloaded and installed via the communication section 509, and / or installed from a removable medium 511. The program code contained in the computer program can be transmitted using any suitable network medium, including but not limited to: wireless, wired, etc., or any suitable combination thereof.

[0122] According to embodiments of this disclosure, program code for executing the computer programs provided in embodiments of this disclosure can be written in any combination of one or more programming languages. Specifically, these computational programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, Python, "C", or similar programming languages. The program code can execute entirely on a user's computing device, partially on a user's device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0123] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. Those skilled in the art will understand that the features described in the various embodiments of the present disclosure can be combined and / or combined in various ways, even if such combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments of this disclosure may be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0124] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A train operation control method, comprising: In response to receiving a warning signal indicating a short-circuit fault in the traction motor, a first control command is generated to control the train to operate at a first limited speed, wherein the first limited speed is less than the normal operating speed of the train, and the warning signal is generated in response to thermal safety status data collected from safety-level sensors configured on the traction motor meeting predetermined conditions; and When the train is controlled to run at the first limited speed according to the first control command, a second control command is generated based on the temperature collected from at least one control-level sensor configured on the traction motor to control the train to run in the target operating mode.

2. The method according to claim 1, wherein, The generation of a second control command for controlling the train to operate in a target operating mode, based on temperatures collected from at least one control-level sensor configured on the traction motor, includes at least one of the following: In response to the fact that the temperature collected by at least one of the control-level sensors configured on the traction motor is less than its respective temperature threshold, a second control command is generated for controlling the train to continue running at the first limited speed until it reaches the first target position, thus creating a target operating mode. or In response to the presence of a temperature greater than or equal to the temperature threshold in the temperatures collected by at least one of the control-level sensors configured on the traction motor, a second control command is generated for controlling the train to operate at a target operating mode at a second limited speed, wherein the second limited speed is less than the first limited speed.

3. The method according to claim 2, wherein, When controlling the train to operate at the second speed limit, the method further includes: In response to the fact that the temperature collected by at least one of the control-level sensors configured on the traction motor is less than its respective temperature threshold, a second control command is generated for controlling the train to continue running at the second limited speed until it reaches the second target position, which is a target operating mode.

4. The method according to claim 3, wherein, When controlling the train to operate at the second speed limit, the method further includes: In response to the presence of a temperature greater than or equal to the temperature threshold in the temperatures collected by at least one of the control-level sensors configured on the traction motor, a second control command is generated for controlling the train to operate at a target operating mode at a third limited speed, wherein the third limited speed is less than the second limited speed.

5. The method according to claim 4, wherein, When controlling the train to operate at the third speed limit, the method further includes: In response to the fact that the temperatures collected by at least one of the control-level sensors configured on the traction motor are all less than their respective temperature thresholds, a second control command is generated for controlling the train to continue running at the third limited speed until it reaches the third target position, wherein the distance between the third target position and the end point of the current train is greater than the distance between the second target position and the end point of the current train.

6. The method according to claim 5, wherein, When controlling the train to operate at the third speed limit, the method further includes: In response to the presence of a temperature greater than or equal to the temperature threshold in the temperatures collected by at least one of the control-level sensors configured on the traction motor, a second control command is generated for controlling the train to suspend operation in a target operating mode.

7. The method according to any one of claims 1 to 6, wherein, The safety-grade sensor includes at least one of a temperature-sensing cable or a temperature-sensing resistor, and the warning signal is generated and sent to the train control unit in response to an impedance value collected from the safety-grade sensor configured on the traction motor being greater than or equal to an impedance threshold.

8. A train operation control device, comprising: A first generation module is configured to, in response to receiving a warning signal indicating a short-circuit fault in the traction motor, generate a first control command for controlling the train to operate at a first limited speed, wherein the first limited speed is less than the normal operating speed of the train, and the warning signal is generated in response to thermal safety status data collected from safety-level sensors configured on the traction motor meeting predetermined conditions; and The second generation module is used to generate a second control command for controlling the train to operate in a target operating mode based on the temperature collected by at least one control-level sensor configured on the traction motor, when the train is controlled to run at the first speed limit according to the first control command.

9. An electronic device, comprising: One or more processors; Memory, used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method of any one of claims 1 to 7.

10. A computer-readable storage medium having stored thereon executable instructions that, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 7.

11. A computer program product comprising a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 7.

12. A train, comprising: A safety-grade sensor is disposed on the traction motor and configured to collect thermal safety status data of the traction motor. A control-level sensor, configured to collect the temperature of the traction motor, is disposed on the traction motor. The train control unit is configured as follows: In response to receiving a warning signal indicating a short-circuit fault in the traction motor, a first control command is generated to control the train to run at a first limited speed, wherein the first limited speed is less than the normal operating speed of the train, and the warning signal is generated in response to the thermal safety status data meeting predetermined conditions; as well as When the train is controlled to run at the first limited speed according to the first control command, a control command for controlling the train to run in the target operating mode is generated according to the temperature, so as to control the train to run in the target operating mode.

13. The train according to claim 12, wherein, The safety-grade sensor includes at least one of the following: a temperature-sensing cable or a temperature-sensing resistor; and / or The safety-grade sensor is disposed at at least one of the coil end, lead end, or effective side of the core slot of the traction motor; and / or The control-level sensor includes at least one of the following: a core temperature sensor, a transmission end bearing sensor, or a non-transmission end bearing sensor.

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