Electric locomotive, safe end changing device thereof, control method and storage medium

Abstract

The invention discloses an electric locomotive and a safe end changing device, a control method and a storage medium thereof, the end changing device comprises a first end changing switch, a second end changing switch and a control unit, the first end changing switch is arranged in a first cab, and the second end changing switch is provided with a second cab; the first end-changing switch and the second end-changing switch are both used for generating end-changing instructions; the control unit is used for activating an end changing process according to a first end changing instruction generated by the first end changing switch or the second end changing switch, judging whether the first end changing instruction is a misoperation instruction or not, and controlling the pantograph to act according to a judgment result so as to avoid current collection of the double pantographs during misoperation. The problems of short circuit of a contact network, tripping of a transformer substation, explosion damage of a high-voltage box of a locomotive and the like caused by misoperation of a driver are effectively avoided, and the safety of railway lines and the locomotive is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transit electric locomotives, and in particular relates to an electric locomotive and a safe terminal change device, a control method, and a storage medium thereof. Background Art

[0002] At present, most electric locomotives have an automatic end-changing function. When the driver operates the end-changing switch (hardware switch or display soft switch), the automatic end-changing process is activated, and the locomotive automatically raises the front bow at this end to maintain the double bow current receiving state; after the other end is reoccupied, the locomotive automatically lowers the front bow at the other end, and the automatic end-changing is completed. However, when the locomotive stops in the phase-splitting area (that is, the power-free section, when the substation provides 25kV high-voltage electricity of different phases, a power-free section is required for isolation to prevent high-voltage electricity of different phases from short-circuiting), if the driver mistakenly operates the automatic end-changing switch, the locomotive automatically raises the double bow, which will cause a short circuit in the contact network, the substation tripping, and the explosion of the locomotive's own high-voltage box, which has very serious consequences for the railway line and the locomotive itself. Summary of the invention

[0003] The purpose of the present invention is to provide an electric locomotive and its safe end-changing device, control method and storage medium to solve the problem of safety accidents of railway lines and locomotives caused by driver's misoperation of automatic end-changing switch when the locomotive is in a phase-free zone.

[0004] The present invention solves the above technical problems through the following technical solutions: A safe end-changing device for electric locomotives, comprising a first end-changing switch, a second end-changing switch and a control unit, wherein the first end-changing switch is arranged in a first driver's cab, and the second end-changing switch is arranged in a second driver's cab; the first end-changing switch and the second end-changing switch are both used to generate an end-changing instruction;

[0005] The control unit is used to activate the end change process according to the first end change instruction generated by the first end change switch or the second end change switch, determine whether the first end change instruction is an erroneous operation instruction, and control the pantograph action according to the judgment result to avoid double pantograph current collection during erroneous operation.

[0006] Further, the control unit is used to determine whether the first end switching instruction is an erroneous operation instruction, specifically including:

[0007] Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch;

[0008] If the second end-switching instruction is received, the first end-switching instruction is an erroneous operation instruction; otherwise, the first end-switching instruction is a normal operation instruction.

[0009] Furthermore, the control unit is used to control the pantograph action according to the judgment result, specifically including:

[0010] If the first end-changing instruction is an erroneous operation instruction, the other pantograph is not controlled to be raised, the single pantograph is kept receiving current, and the end-changing process is exited;

[0011] If the first end-changing instruction is a normal operation instruction, it is determined whether a driver's cab re-occupancy instruction is received. If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the pantograph that was originally raised is controlled to be lowered, thereby ending the end-changing process; wherein, the driver's cab re-occupancy instruction and the first end-changing instruction come from different driver's cabs.

[0012] Furthermore, the first end-changing switch and the second end-changing switch are hardware switches or software switches on a display screen in the driver's cab.

[0013] Furthermore, the control unit is a train control unit CCU.

[0014] Based on the same concept, the present invention provides an electric locomotive, wherein the electric locomotive is provided with the electric locomotive safety terminal switching device as described above.

[0015] Based on the same concept, the present invention provides a control method for the electric locomotive safety terminal switching device as described above, comprising:

[0016] activating a terminal switching process according to the received first terminal switching instruction;

[0017] It is determined whether the first end-changing instruction is an erroneous operation instruction, and the pantograph action is controlled according to the determination result to avoid double pantographs receiving current during erroneous operation.

[0018] Further, the determining whether the first end switching instruction is an erroneous operation instruction includes:

[0019] Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch;

[0020] If the second end-switching instruction is received, the first end-switching instruction is an erroneous operation instruction; otherwise, the first end-switching instruction is a normal operation instruction.

[0021] Further, controlling the pantograph action according to the judgment result includes:

[0022] If the first end-changing instruction is an erroneous operation instruction, the other pantograph is not controlled to be raised, the single pantograph is kept receiving current, and the end-changing process is exited;

[0023] If the first end-changing instruction is a normal operation instruction, it is determined whether a driver's cab re-occupancy instruction is received. If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the originally raised pantograph is controlled to be lowered, thereby ending the end-changing process;

[0024] Among them, the driver's cab re-occupancy instruction and the first end change instruction come from different driver's cabs.

[0025] Based on the same concept, the present invention provides a storage medium on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the control method of the electric locomotive safety terminal switching device as described above is implemented.

[0026] Beneficial Effects

[0027] Compared with the prior art, the advantages of the present invention are:

[0028] The present invention optimizes the control method for raising double pantographs in the end-changing process, and improves it from the original single confirmation (i.e., operating the end-changing switch can raise the double pantographs) to multi-level confirmation, thereby effectively avoiding problems such as contact network short circuit, substation tripping, and explosion damage of the locomotive's own high-voltage box caused by driver's misoperation, thereby improving the safety of railway lines and locomotives.

[0029] The present invention can be realized by modifying the control logic based on the original control unit of the electric locomotive, without modifying the hardware equipment and the electrical circuit. It is simple and easy to implement, can quickly and effectively realize the safety protection of the electric locomotive end change process, and has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a flow chart of the control method of the electric locomotive safety terminal change device in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0034] Example 1

[0035] An electric locomotive safety end-changing device provided in an embodiment of the present invention includes a first end-changing switch, a second end-changing switch and a control unit. The first end-changing switch is arranged in a first driver's cab, and the second end-changing switch is arranged in a second driver's cab; the first end-changing switch and the second end-changing switch are both used to generate end-changing instructions.

[0036] The control unit is used to activate the end change process according to the first end change instruction generated by the first end change switch or the second end change switch, determine whether the first end change instruction is an erroneous operation instruction, and control the pantograph action according to the judgment result to avoid double pantograph current collection during erroneous operation.

[0037] When the driver operates the first end-changing switch or the second end-changing switch, a first end-changing instruction is generated, and the control unit activates the end-changing process according to the first end-changing instruction; if the control unit determines that the first end-changing instruction is an erroneous operation instruction, it will not control the other pantograph to rise, and still keep the single pantograph receiving current, and exit the end-changing process. During the whole process, the locomotive maintains the single pantograph receiving current unchanged; if the control unit determines that the first end-changing instruction is a normal operation instruction, it will control the other pantograph to rise after reconfirmation (in this embodiment, it is confirmed by reoccupying another driver's cab), and then automatically lower the originally raised pantograph after realizing the double pantograph receiving current, and complete the end-changing process. The present invention will only raise the other pantograph after receiving the first end-changing instruction, judging that the first end-changing instruction is a normal operation instruction and reconfirming it. After multiple confirmations by the driver, it effectively avoids problems such as contact network short circuit, substation tripping, and explosion damage of the locomotive's own high-voltage box caused by the driver's erroneous operation of the end-changing switch.

[0038] In a specific embodiment of the present invention, the control unit is used to determine whether the first end-changing instruction is an erroneous operation instruction, specifically including:

[0039] Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch;

[0040] If the second end-changing instruction is received, the first end-changing instruction is an erroneous operation instruction; otherwise, the first end-changing instruction is a normal operation instruction.

[0041] Generally speaking, when the driver operates in the cab at one end, he raises the pantograph in the cab at the other end by closing the electric key at that end, and closes the main circuit breaker at the other end, so that the electric energy on the contact network reaches the locomotive through the pantograph and main circuit breaker at the other end, thereby realizing the operation of the locomotive.

[0042] Assume that the first driver's cab end corresponds to the first pantograph, and the second driver's cab end corresponds to the second pantograph. Exemplarily, when the driver operates in the first driver's cab, the second pantograph is raised by closing the electric key at the first end, and the main circuit breaker at the second end is closed, so that the electric energy on the contact network reaches the locomotive through the second pantograph and the main circuit breaker at the second end, thereby realizing the operation of the locomotive. When the locomotive reaches the destination in the current direction of travel and needs to change direction (that is, the locomotive is stationary and meets other end-changing conditions), the driver operates the first end-changing switch in the first driver's cab to generate the first end-changing instruction and activate the end-changing process. At this time, the second pantograph is kept receiving current and the first pantograph will not be automatically raised; if the end-changing process is activated by the driver's misoperation, the driver can operate the first end-changing switch again to generate the second end-changing instruction. When the control unit receives the second end-changing instruction, it is judged that the first end-changing instruction is an erroneous operation instruction and exits the end-changing process. At this time, the second pantograph is still kept receiving current, that is, the entire end-changing process keeps the single pantograph receiving current and does not raise the double pantograph.

[0043] If the control unit does not receive the second end-changing instruction, it determines that the first end-changing instruction is a normal operation instruction. After further confirmation by the driver, the first pantograph will be automatically raised. At this time, both the first pantograph and the second pantograph are raised and are in a double-pantograph current-collecting state. After the double pantographs are raised, the second pantograph is automatically lowered, and only the first pantograph is kept raised, thereby ending the end-changing process.

[0044] In a specific embodiment of the present invention, the control unit is used to control the pantograph action according to the judgment result, specifically including:

[0045] If the first end-changing instruction is a wrong operation instruction (the control unit receives the second end-changing instruction), the other pantograph is not controlled to be raised, the single pantograph is kept receiving current, and the end-changing process is exited;

[0046] If the first end-changing instruction is a normal operation instruction, it is determined whether the driver's cab re-occupancy instruction is received (the driver confirms again whether the end-changing operation is a normal operation). If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the pantograph that was originally raised is controlled to be lowered to end the end-changing process; wherein, the driver's cab re-occupancy instruction and the first end-changing instruction come from different driver's cabs.

[0047] Exemplarily, the driver operates the first end-changing switch in the first driver's cab to generate the first end-changing instruction and activate the end-changing process. At this time, the second pantograph is kept receiving current and the first pantograph will not be automatically raised. If the first end-changing instruction is a normal operation instruction, the driver exits the occupation of the first driver's cab end (pulls out the key), and then goes to the second driver's cab to re-occupy the second driver's cab end (inserts the key, that is, the control unit receives the re-occupancy instruction), controls the first pantograph to be raised, and at this time, both the first pantograph and the second pantograph are raised and are in a double-pantograph current-receiving state. After the double pantographs are raised, the second pantograph is automatically lowered, and only the first pantograph is kept raised, thereby ending the end-changing process.

[0048] No matter it is an erroneous operation end-changing process or a normal end-changing process, the power supply can be uninterrupted throughout the entire end-changing process. At the same time, it can avoid problems such as contact network short circuit, substation tripping, and locomotive's own high-voltage box explosion caused by erroneous operation to activate the end-changing process, thereby ensuring the normal operation of the railway line and the normal operation of the electric locomotive, and improving the safety of the railway line and locomotive vehicles.

[0049] In a specific implementation manner of the present invention, the first end-changing switch and the second end-changing switch are hardware switches or software switches on a display screen in the driver's cab.

[0050] In a specific embodiment of the present invention, the control unit is a train control unit CCU (Central Control Unit).

[0051] Example 2

[0052] An embodiment of the present invention provides an electric locomotive, which is provided with the electric locomotive safety terminal switching device in Example 1 of the present application.

[0053] Example 3

[0054] like Figure 1 As shown, the embodiment of the present invention provides a control method for the electric locomotive safety terminal switching device as described in Example 1 of the present application, comprising the following steps:

[0055] Step 1: Activate the end switching process according to the received first end switching instruction;

[0056] Step 2: Determine whether the first end-changing instruction is an erroneous operation instruction, and control the pantograph action according to the determination result to avoid double pantographs receiving current during erroneous operation.

[0057] In a specific implementation of the present invention, determining whether the first end-change instruction is an erroneous operation instruction specifically includes:

[0058] Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch;

[0059] If the second end-changing instruction is received, the first end-changing instruction is an erroneous operation instruction; otherwise, the first end-changing instruction is a normal operation instruction.

[0060] Assume that the first driver's cab end corresponds to the first pantograph, and the second driver's cab end corresponds to the second pantograph. Exemplarily, when the driver operates in the first driver's cab, the second pantograph rises, so that the electric energy on the contact network reaches the locomotive through the second pantograph, thereby realizing the operation of the locomotive. When the locomotive reaches the destination in the current direction of travel and needs to change direction (that is, the locomotive is stationary and meets other end-changing conditions), the driver operates the first end-changing switch in the first driver's cab to generate a first end-changing instruction and activate the end-changing process. At this time, the second pantograph is kept receiving current and the first pantograph will not be automatically raised; if the end-changing process is activated by the driver's misoperation, the driver can operate the first end-changing switch again to generate a second end-changing instruction. When the control unit receives the second end-changing instruction, it determines that the first end-changing instruction is an erroneous operation instruction and exits the end-changing process. At this time, the second pantograph is still kept receiving current, that is, the entire end-changing process keeps a single pantograph receiving current and does not raise the double pantograph.

[0061] In a specific implementation of the present invention, controlling the pantograph action according to the judgment result specifically includes:

[0062] If the first end-changing instruction is an erroneous operation instruction, the other pantograph will not be controlled to rise, the single pantograph will be kept receiving current, and the end-changing process will be exited;

[0063] If the first end-changing instruction is a normal operation instruction, it is determined whether the driver's cab re-occupancy instruction is received (the driver confirms again whether the end-changing operation is a normal operation). If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the pantograph that was originally raised is controlled to be lowered to end the end-changing process; wherein, the driver's cab re-occupancy instruction and the first end-changing instruction come from different driver's cabs.

[0064] Exemplarily, the driver operates the first end-changing switch in the first driver's cab to generate the first end-changing instruction and activate the end-changing process. At this time, the second pantograph is kept receiving current and the first pantograph will not be automatically raised. If the first end-changing instruction is a normal operation instruction, the driver exits the occupation of the first driver's cab end (pulls out the key), and then goes to the second driver's cab to re-occupy the second driver's cab end (inserts the key, that is, the control unit receives the re-occupancy instruction), controls the first pantograph to be raised, and at this time, both the first pantograph and the second pantograph are raised and are in a double-pantograph current-receiving state. After the double pantographs are raised, the second pantograph is automatically lowered, and only the first pantograph is kept raised, thereby ending the end-changing process.

[0065] No matter it is an erroneous operation end-changing process or a normal end-changing process, the power supply can be uninterrupted throughout the entire end-changing process. At the same time, it can avoid problems such as contact network short circuit, substation tripping, and locomotive's own high-voltage box explosion caused by erroneous operation to activate the end-changing process, thereby ensuring the normal operation of the railway line and the normal operation of the electric locomotive, and improving the safety of the railway line and locomotive vehicles.

[0066] Example 4

[0067] An embodiment of the present invention further provides a storage medium on which a computer program / instruction is stored. When the computer program / instruction is executed by a processor, the control method of the electric locomotive safety terminal switching device in the embodiment of the present application is implemented.

[0068] Storage media in embodiments of the present invention include permanent and non-permanent, removable and non-removable items that can be implemented by any method or technology to store information. Examples of storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0069] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A safe end-changing device for an electric locomotive, comprising a first end-changing switch, a second end-changing switch and a control unit, wherein the first end-changing switch is provided in a first driver's cab, and the second end-changing switch is provided in a second driver's cab; the first end-changing switch and the second end-changing switch are both used to generate an end-changing instruction; characterized in that: The control unit is used to activate the end change process according to the first end change instruction generated by the first end change switch or the second end change switch, determine whether the first end change instruction is an erroneous operation instruction, and control the pantograph action according to the judgment result to avoid double pantograph current collection during erroneous operation.

2. The electric locomotive safety terminal change device according to claim 1, characterized in that: The control unit is used to determine whether the first end-change instruction is an erroneous operation instruction, specifically including: Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch; If the second end-switching instruction is received, the first end-switching instruction is an erroneous operation instruction; otherwise, the first end-switching instruction is a normal operation instruction.

3. The electric locomotive safety terminal change device according to claim 1, characterized in that: The control unit is used to control the pantograph action according to the judgment result, specifically including: If the first end-changing instruction is an erroneous operation instruction, the other pantograph is not controlled to be raised, the single pantograph is kept receiving current, and the end-changing process is exited; If the first end-changing instruction is a normal operation instruction, it is determined whether a driver's cab re-occupancy instruction is received. If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the pantograph that was originally raised is controlled to be lowered, thereby ending the end-changing process; wherein, the driver's cab re-occupancy instruction and the first end-changing instruction come from different driver's cabs.

4. The electric locomotive safety terminal change device according to any one of claims 1 to 3, characterized in that: The first end-changing switch and the second end-changing switch are hardware switches or software switches on a display screen in the driver's cab.

5. The electric locomotive safety terminal change device according to any one of claims 1 to 3, characterized in that: The control unit is a train control unit CCU.

6. An electric locomotive, characterized in that: The electric locomotive is provided with an electric locomotive safety terminal change device as claimed in any one of claims 1 to 5.

7. A control method for a safe end-changing device of an electric locomotive according to any one of claims 1 to 5, characterized in that: The control method comprises: activating a terminal switching process according to the received first terminal switching instruction; It is determined whether the first end-changing instruction is an erroneous operation instruction, and the pantograph action is controlled according to the determination result to avoid double pantographs receiving current during erroneous operation.

8. The control method of the electric locomotive safety terminal change device according to claim 7, characterized in that: Determining whether the first end-change instruction is an erroneous operation instruction includes: Determine whether a second end-change instruction is received; wherein the second end-change instruction and the first end-change instruction are from the same end-change switch; If the second end-switching instruction is received, the first end-switching instruction is an erroneous operation instruction; otherwise, the first end-switching instruction is a normal operation instruction.

9. The control method of the electric locomotive safety terminal change device according to claim 7 or 8, characterized in that: The controlling of the pantograph action according to the judgment result comprises: If the first end-changing instruction is an erroneous operation instruction, the other pantograph is not controlled to be raised, the single pantograph is kept receiving current, and the end-changing process is exited; If the first end-changing instruction is a normal operation instruction, it is determined whether a driver's cab re-occupancy instruction is received. If the driver's cab re-occupancy instruction is received, the other pantograph is first controlled to be raised, and then the originally raised pantograph is controlled to be lowered, thereby ending the end-changing process; Among them, the driver's cab re-occupancy instruction and the first end change instruction come from different driver's cabs.

10. A storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instruction is executed by the processor, the electric locomotive safety terminal switching device control method as described in any one of claims 7 to 9 is implemented.

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