Method and system for unhooking control for locomotive wireless remote control mode and locomotive

Abstract

This invention provides a method and system for uncoupling control in wireless remote control mode of a locomotive, as well as a locomotive. When the locomotive is in wireless remote control mode, the uncoupling control method includes: Step 1: Determine whether the wireless remote control system host is in an unlocked state; if the determination is yes, proceed to Step 2; Step 2: Continue to perform the first determination; if the determination is yes, proceed to Step 3; Step 3: Continue to perform the second determination; if the determination is yes, the uncoupling operation is valid, the corresponding uncoupling solenoid valve is energized, the corresponding coupler is in an uncoupling state, and proceed to Step 4; Step 4: Determine whether the current time reaches TB+△TB; if not, continue to perform the third determination; if the result of the third determination is yes, the uncoupling control method is completed; if the current time reaches TB+△TB, the corresponding uncoupling solenoid valve is de-energized, causing the corresponding coupler of the current locomotive to be in a locked state, and proceed to Step 3.

Description

Technical Field

[0001] This invention relates to a method and system for uncoupling control in wireless remote control mode of locomotives, and to a locomotive, belonging to the field of rail transit vehicle control. Background Technology

[0002] On existing locomotives or urban rail vehicles, the automatic uncoupling function is a very mature system. The safety of the uncoupling process can usually be ensured by the driver's hardware operation (such as mechanical switches) in the driver's cab and the dual safety interlock of software.

[0003] However, in Radio Remote Control (RRC) mode, the driver is not located in the driver's cab but outside the locomotive, controlling it via a wireless remote controller. To uncouple the current locomotive from its coupled locomotive in RRC mode, the driver must operate the remote controller from outside the locomotive, controlling it wirelessly and executing corresponding software operations through the locomotive controller. Furthermore, because the driver is not in the driver's cab, they cannot monitor the vehicle's status through cab-mounted equipment (such as displays). Therefore, if the driver misjudges the locomotive's status during uncoupling, there is a significant safety risk. Additionally, the effectiveness of the operation cannot be determined during the driver's operation; therefore, the existing automatic uncoupling method, which relies on the driver's operation and observation of cab display screens, is not applicable in RRC mode. Summary of the Invention

[0004] The problem this invention aims to solve is that, in the wireless remote control mode of locomotives, the driver may misjudge the locomotive's status, resulting in a significant safety risk. The invention provides a method for uncoupling control in the wireless remote control mode of locomotives.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for uncoupling control in the wireless remote control mode of locomotives, characterized in that:

[0006] When the locomotive is currently in wireless remote control mode, the uncoupling control method includes:

[0007] Step 1: Determine whether the locomotive's wireless remote control system host (2) is in an unlocked state; if the wireless remote control system host (2) is in an unlocked state, proceed to step 2;

[0008] Step 2: Continue executing the first judgment; if the result of the first judgment is yes, then execute Step 3;

[0009] Step 3: Continue to execute the second judgment; if the result of the second judgment is yes, the uncoupling operation is valid, the uncoupling solenoid valve corresponding to the button operation of the coupler unlocking is energized, so that the corresponding coupler of the current locomotive is in the uncoupling state, and step 4 is executed;

[0010] Step 4: Determine whether the current time has reached TB+△TB;

[0011] If TB+△TB has not been reached at the current moment, the third judgment continues to be executed; if the result of the third judgment is yes, the unhooking control method is completed.

[0012] If the current time reaches TB+△TB, the corresponding uncoupling solenoid valve is de-energized, causing the corresponding coupler of the current locomotive to be locked, and the process jumps to step 3.

[0013] Wherein, the first judgment is to determine whether the wireless remote controller (1) has the correct button operation for unlocking the coupler; the second judgment is whether the current locomotive speed is 0; the third judgment is to determine whether the coupler in the uncoupling state and the locomotive connected to the coupler have completed separation; TB is the moment when the result of the first judgment is yes, or the moment when the uncoupling operation is effective, or the moment when the corresponding uncoupling solenoid valve is energized; △TB is the first preset time interval.

[0014] According to the above technical solution, step 1 determines whether the wireless remote control is unlocked, that is, whether the driver has performed the wireless remote control unlocking operation. If the wireless remote control is unlocked, the driver's button operation to unlock the coupler is valid. That is, if the driver has not performed the wireless remote control unlocking operation, the button operation to unlock the coupler is considered invalid. By setting the order of steps 1 and 2, the correct execution sequence of the unlocking operation is ensured, effectively avoiding coupler unlocking caused by driver error. If the wireless remote control system host is unlocked and the result of the first determination is yes (i.e., the driver's button operation to unlock the coupler is correct), then before the uncoupling operation is valid, step 3 needs to determine whether the current locomotive speed is 0 (i.e., the second determination) to ensure the safety of the locomotive during uncoupling. If the uncoupling operation is determined to be valid in step 3, the uncoupling solenoid valve corresponding to the button operation to unlock the coupler is energized, and the energization continues until time TB+△TB. If the current time has not reached TB+△TB, then the third determination (i.e., whether separation is completed) continues to be executed. If the third determination is yes, the uncoupling control method is completed.

[0015] During the applicant's research, it was discovered that after the uncoupling operation is effective, new situations may arise that prevent the two locomotives from separating. For example, the driver might find a situation unsuitable for separating the two locomotives, such as the presence of other locomotives on the track, or the two coupled locomotives having new tasks to perform. Alternatively, after the uncoupling operation is effective, the driver might have other commitments and be unable to move the current locomotive, thus preventing the separation operation from being completed. By judging whether the time TB+△TB is reached, when TB+△TB is reached, the previously energized solenoid valve is de-energized, causing the coupler previously controlled to be in the uncoupling state to return to the locked state (i.e., the current locomotive is coupled to the other locomotive). This avoids situations where, after the uncoupling operation is effective, the coupler remains in the uncoupling state if separation is not possible, leading to safety issues. In this invention, separation is defined as the formation of a certain gap between the two previously coupled locomotives, preventing coupling at the current position.

[0016] Furthermore:

[0017] The unhooking control method further includes: continuously judging whether the current time has reached TA+△TA. If the current time has reached TA+△TA and the unhooking control method has not been completed, the wireless remote control system host (2) is locked and jumps to step 1.

[0018] Step 1 further includes: if it is determined that the wireless remote control system host (2) is in an unlocked state, then record the time when the wireless remote control system host (2) is unlocked;

[0019] Where: TA is the time when the wireless remote control system host (2) is unlocked as recorded in step 1, △TA is the second preset time interval; △TB<△TA.

[0020] During the applicant's research, it was discovered that after the wireless remote control is unlocked, new situations may arise that prevent the subsequent uncoupling operation from proceeding. For example, other locomotives may appear on the track, or the two coupled locomotives may have new tasks to perform. Alternatively, after the wireless remote control system host is unlocked, the driver may have other commitments and be unable to continue the subsequent steps of the uncoupling control method. Through the aforementioned further solution, starting from the time TA when the wireless remote control system host is unlocked (recorded in step 1), the uncoupling control method continuously executes a judgment on whether the current time has reached TA+△TA. This judgment is executed in parallel with steps 2, 3, and 4. As long as this judgment is satisfied, and the uncoupling control method is not completed, even if steps 2, 3, and 4 are not completed, the wireless remote control system host will be locked, and the process will jump to step 1. That is, this operation has a higher priority than steps 2, 3, and 4. In other words, it is considered that the steps of the uncoupling control method should be completed within the time △TA starting from the time TA when the wireless remote control system host is unlocked. If the current time reaches TA+△TA and the uncoupling control method is not completed, it is considered that the driver forgot the uncoupling operation or other interference occurred. If the current time reaches TA+△TA and the unhooking control method is completed, then the unhooking control method is finished. This setting further prevents safety issues from occurring.

[0021] In the preferred technical solution, the difference between △TA and △TB ranges from [15 seconds to 60 seconds].

[0022] According to the above technical solution, by setting the value of the difference between △TA and △TB, if the driver has not completed the separation of the current locomotive from the locomotive coupled with it after the uncoupling solenoid valve is energized, and if the time of TA+△TA has not been reached, the driver still has the opportunity to re-execute steps 3 and 4, that is, to re-operate to energize the uncoupling solenoid valve and then separate the two locomotives to complete the uncoupling control method.

[0023] In the preferred technical solution, the value range of △TA is [30 seconds, 120 seconds].

[0024] Furthermore, if from the moment the corresponding uncoupling solenoid valve is energized to the current moment, there is at least a moment when the locomotive speed is greater than 0, or the interval between the two locomotives corresponding to the uncoupling coupler reaches a preset distance, then the two locomotives corresponding to the uncoupling coupler complete the separation.

[0025] According to the above technical solution, if there is at least one moment when the speed of the current locomotive is greater than 0 from the moment of power-on to the present moment, it indicates that the current locomotive has moved away from the position of the locomotive previously coupled to it. If the distance between the two locomotives corresponding to the couplers in the uncoupled state reaches the preset distance, it indicates that the two locomotives have moved away from each other. Therefore, it can be determined whether the two locomotives have completed separation by judging the speed or the distance between the locomotives.

[0026] Furthermore, in step 3, if the unhooking operation is effective, the following operations are also performed:

[0027] Determine whether the pressure in the locomotive's brake cylinder is less than the pressure threshold P1. If the determination result is yes, then within a preset time △TC, ensure that the pressure in the brake cylinder is not less than the preset pressure value P2, where P2≥P1; otherwise, keep the pressure in the brake cylinder at the current pressure.

[0028] During the applicant's research, it was discovered that if the brake cylinder pressure is insufficient, for example, when the locomotive is on a slope, and the vehicle does not immediately move at a certain speed after the coupler is released, the locomotive may slip down the slope, hindering subsequent locomotive operations. Through the above-mentioned design, if it is determined that the pressure in the locomotive's brake cylinder is insufficient, the pressure in the brake cylinder will be increased to sufficient pressure within a preset time to prevent the locomotive from slipping downhill. After the preset time △TC (i.e., after time TB+△TC), the locomotive can be operated to perform subsequent operational tasks (such as braking or moving).

[0029] Furthermore, step A1 is included before step 1;

[0030] Step A1: Determine if the current locomotive speed is 0. If the result is yes, proceed to step 1.

[0031] Furthermore, the wireless remote controller (1) is provided with an indicator device (16).

[0032] When the wireless remote control system host (2) is in the unlocked state and the locked state respectively, the indicator device (16) is in the first state and the second state respectively; the first state and the second state are different states.

[0033] According to the above technical solution, the driver (i.e. the locomotive controller) located outside the locomotive can determine whether the wireless remote control system host is unlocked by observing the status of the indicator device, which facilitates the driver's subsequent operation.

[0034] In a preferred embodiment, in step 1, if the indicator device (16) is detected to be in the first state, then the wireless remote control system host (2) of the locomotive is determined to be in the unlocked state.

[0035] According to the above-described solution of the present invention, by detecting the status of the indicator device, it is convenient to determine whether the wireless remote control system host is in an unlocked state.

[0036] In another preferred embodiment, the indicator (16) is an indicator light, the first state is a constant indicator light state or a flashing indicator light state, and the second state is an off indicator light state.

[0037] Furthermore, the wireless remote controller (1) has a traction / braking selection button (11) and a remote controller unlock button (12).

[0038] The unhooking control method further includes: performing step P1 before step 1;

[0039] Step P1: Determine whether the traction / braking selection button (11) is in the braking position and the remote control unlock button (12) is in the unlock position at the same time. If the determination result is yes, then set the wireless remote control (1) to the unlock state.

[0040] Furthermore, the wireless remote controller (1) has an enable coupler unlock button (13) and an unlock coupler selection button (14); the unlock coupler selection button (14) has a first coupler selection position and a second coupler selection position; the first coupler and the second coupler are the couplers at both ends of the locomotive;

[0041] If the allowed coupler unlock button (13) is detected to be in the allowed unlock position, the unlock coupler selection button (14) is detected to be in any coupler selection position, and the operation of the allowed coupler unlock button (13) is detected to precede the operation of the unlock coupler selection button (14), then it is determined to be a correct coupler unlock button operation.

[0042] According to the above technical solution, only when the driver correctly operates the buttons on the wireless remote control can it be considered a correct button operation for unlocking the coupler, thus avoiding unintended coupler unlocking caused by driver error.

[0043] Furthermore, the value range of △TB is [20 seconds, 60 seconds].

[0044] According to the same inventive concept, the present invention also provides an uncoupling control system for a locomotive wireless remote control mode, wherein the locomotive has a locomotive wireless remote control system, the locomotive wireless remote control system includes a wireless remote control system host (2) installed on the locomotive and a wireless remote controller (1) wirelessly connected to the wireless remote control system host (2); the output end of the wireless remote control system host (2) is connected to the locomotive controller (10); the control end of each uncoupling solenoid valve is respectively connected to the locomotive controller (10); the locomotive controller (10) is configured to execute the above-mentioned uncoupling control method.

[0045] According to the above technical solution, the wireless remote controller can be wirelessly connected to the wireless remote control system host on the locomotive, so that the locomotive controller can collect the operation of the wireless remote controller through the wireless remote control system host.

[0046] Based on the same inventive concept, the present invention also provides a locomotive including the above-described uncoupling control system.

[0047] The advantages and positive effects of this invention are: this invention can be used in a control system that uses a remote control for uncoupling operations. The system has good stability and reliability, and is also convenient for the driver to operate. The driver can safely, simply and efficiently complete the uncoupling operation without having to observe the display equipment in the locomotive cab. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of some buttons on the wireless remote control in the locomotive wireless remote control system of Embodiment 1 of the present invention;

[0050] Figure 2 This is a schematic diagram of the uncoupling control system of the first locomotive in Embodiment 1 of the present invention, and the structure of the first locomotive being coupled to the second locomotive, and the second locomotive being coupled to both locomotives.

[0051] Figure 3 This is a flowchart of the unhooking control method of Embodiment 1 of the present invention;

[0052] Figure 4 This is a flowchart of the unhooking control method of Embodiment 2 of the present invention;

[0053] Figure 5 This is a flowchart of the unhooking control method of Embodiment 3 of the present invention.

[0054] In the above attached figures:

[0055] Wireless remote controller 1; Wireless remote control system host 2; First uncoupling solenoid valve 31; Second uncoupling solenoid valve 32; First coupler 41; Second coupler 42; Locomotive controller 10; First locomotive RA; Second locomotive RB; Third locomotive RC;

[0056] Traction / braking selection button 11; remote control unlock button 12; allow coupler unlock button 13; coupler unlock selection button 14; indicator device 16; first base 11A; second base 12A; third base 13A; fourth base 14A. Detailed Implementation

[0057] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] Example 1

[0059] This embodiment 1 provides a method for uncoupling control in the wireless remote control mode of locomotives.

[0060] When the locomotive is currently in wireless remote control mode, the uncoupling control method includes:

[0061] Step P1: Determine whether the traction / braking selection button 11 is in the braking position and the remote control unlock button 12 is in the unlock position simultaneously. If the determination result is yes, then set the wireless remote control 1 to the unlock state.

[0062] Step 1: Determine whether the locomotive's wireless remote control system host 2 is in an unlocked state; if the wireless remote control system host 2 is determined to be in an unlocked state, proceed to Step 2. In Step 1, if the indicator device 16 is detected to be in the first state, then the locomotive's wireless remote control system host (2) is determined to be in an unlocked state.

[0063] Step 2: Continue executing the first judgment; if the result of the first judgment is yes, then execute Step 3;

[0064] Step 3: Continue to execute the second judgment; if the result of the second judgment is yes, the uncoupling operation is valid, the uncoupling solenoid valve corresponding to the button operation of the coupler unlocking is energized, so that the corresponding coupler of the current locomotive is in the uncoupling state, and step 4 is executed;

[0065] Step 4: Determine whether the current time has reached TB+△TB;

[0066] If TB+△TB has not been reached at the current moment, the third judgment continues to be executed; if the result of the third judgment is yes, the unhooking control method is completed.

[0067] If the current time reaches TB+△TB, the corresponding uncoupling solenoid valve is de-energized, causing the corresponding coupler of the current locomotive to be locked, and the process jumps to step 3.

[0068] Wherein, the first judgment is to determine whether the wireless remote controller 1 has the correct button operation for unlocking the coupler; the second judgment is whether the current locomotive speed is 0; the third judgment is to determine whether the coupler in the uncoupling state and the locomotive connected to the coupler have completed separation; TB is the moment when the result of the first judgment is yes, or the moment when the uncoupling operation is effective, or the moment when the corresponding uncoupling solenoid valve is energized; △TB is the first preset time interval.

[0069] like Figure 2 As shown: If the wireless remote control selects to unlock the first coupler 41, the first uncoupling solenoid valve 31 is energized when the uncoupling operation is valid, thus uncoupling the first coupler 41. That is, the coupling between the first locomotive RA and the second locomotive RB is released. If the wireless remote control selects to unlock the second coupler 42, the second uncoupling solenoid valve 32 is energized when the uncoupling operation is valid, thus uncoupling the second coupler 42. That is, the coupling between the first locomotive RA and the third locomotive RC is released. The first locomotive RA is the current locomotive in this embodiment.

[0070] This embodiment provides a method for uncoupling control in the wireless remote control mode of locomotives.

[0071] If, from the moment the corresponding uncoupling solenoid valve is energized to the current moment, there is at least a moment when the locomotive speed is greater than 0, or the interval between the two locomotives corresponding to the uncoupling coupler reaches a preset distance, then the two locomotives corresponding to the uncoupling coupler complete the separation.

[0072] In step 3, if the unhooking operation is effective, the following operation is also performed:

[0073] Determine whether the pressure in the locomotive's brake cylinder is less than the pressure threshold P1. If the determination result is yes, then within a preset time Tb, ensure that the pressure in the brake cylinder is not less than the preset pressure value P2, where P2≥P1; otherwise, keep the pressure in the brake cylinder at the current pressure.

[0074] The step A1 is preceding step 1; Step A1: Determine whether the current locomotive speed is 0. If the determination result is yes, then execute step 1.

[0075] like Figure 1 As shown, the wireless remote controller 1 is equipped with an indicator device 16.

[0076] When the wireless remote control system host 2 is in the unlocked state and the locked state respectively, the indicator device 16 is in the first state and the second state respectively; the first state and the second state are different states.

[0077] The indicator device 16 is an indicator light. The first state is a constant indicator light state or a flashing indicator light state, and the second state is an off indicator light state.

[0078] like Figure 1 As shown, the wireless remote controller 1 has a traction / braking selection button 11 and a remote controller unlock button 12;

[0079] If the traction / braking selection button 11 is detected to be in the braking position and the remote control unlock button 12 is detected to be in the unlock position, then the wireless remote control system host 2 is in the unlocked state.

[0080] like Figure 1 As shown, the wireless remote controller 1 has a coupler unlock button 13 and a coupler unlock selection button 14; the coupler unlock selection button (14) has a first coupler selection position and a second coupler selection position; the first coupler and the second coupler are the couplers at both ends of the locomotive.

[0081] If it is detected that the coupler unlock button 13 is in the unlock position, the coupler unlock selection button 14 is in any coupler selection position, and the operation of setting the coupler unlock button 13 to the unlock position precedes the operation of setting the coupler unlock selection button 14 to the coupler selection position, then it is determined to be a correct coupler unlock button operation.

[0082] like Figure 1 As shown, on the wireless remote controller 1, the traction / brake selection button 11, the remote controller unlock button 12, the coupler unlock permission button 13, and the coupler unlock selection button 14 are respectively installed on the first base 11A, the second base 12A, the third base 13A, and the fourth base 14A. In this embodiment, the buttons can be plate tendons. The selectable positions of the traction / brake selection button 11 include the brake holding position and the brake applying position. Applying force will cause the traction / brake selection button 11 to reach the brake applying position, and when no force is applied, the traction / brake selection button 11 will automatically reset to the brake holding position. The selectable positions of the remote controller unlock button 12 include the unlock position and the zero position. Applying force will cause the remote controller unlock button 12 to reach the unlock position, and when no force is applied, the remote controller unlock button 12 will automatically reset to the zero position. The coupler unlock permission button 13 can be selected in the unlock permission position and the unlock prohibition position. The coupler unlock selection button 14 can be selected in the first coupler selection position, the coupler selection zero position, and the second coupler selection position. Applying force can cause the coupler selection button 14 to reach either the first coupler selection position or the second coupler selection position. When no force is applied, the coupler selection button 14 automatically resets to the coupler selection zero position. The above lists some or all of the selectable positions of the buttons, meaning that the selectable positions of each button are not limited to those listed above.

[0083] For example, if the operation of allowing the coupler unlock button 13 to be in the allowed unlock position is performed first, and then the operation of unlocking the coupler selection button 14 to be in the first coupler selection position is performed, then it is determined to be a correct coupler unlocking button operation, and in step 3, the uncoupling solenoid valve corresponding to the first coupler is energized.

[0084] The value range of △TB is [20 seconds, 60 seconds].

[0085] The following provides a more detailed description of this embodiment. Figure 3 As shown, the detailed unhooking process of this invention is as follows:

[0086] Step S1: When the locomotive is stationary (stationary on the track), the driver controls the locomotive via a wireless remote control. In this invention, the driver can make a preliminary judgment on whether the locomotive speed is not 0 and whether the wireless remote control system host 2 is in an unlocked state (i.e., judged by the indicator light status). If the driver violates the rules and fails to make the above judgment, a 0-speed judgment is also involved in the subsequent step S61. If the locomotive speed is determined to be not 0, the operation is considered invalid, thereby preventing the driver from violating the rules.

[0087] The driver observes the status of the vehicle's external indicator lights (i.e., indicator device 16) of the RRC system. If the external indicator light is not constantly lit, it indicates that the wireless remote controller is not in operating mode, and the driver can operate the wireless remote controller to unlock it, thus unlocking the locomotive's wireless remote control system (RRC system). If the external indicator light is constantly lit, it indicates that the wireless remote controller is in operating mode, and there is no need to unlock the wireless remote control system host.

[0088] Step S2: Unlocking the wireless remote control includes:

[0089] (1) Set the traction brake button to the brake position.

[0090] (2) The remote control unlock button 12 is in the unlock position.

[0091] In step SA1, the RRC system determines whether the unlocking operation is valid in step S2. If it is valid, the RRC system releases the traffic blockage signal in step SA2; otherwise, it returns to step S1. In step SA3, after receiving the signal from the RRC system that the traffic blockage has been released, the TCMS system drives the external indicator light to stay on, and then executes step S3.

[0092] In step S3, if the external indicator light is constantly on, it indicates successful unlocking and the wireless remote control is in operation, meaning the wireless remote control system is running. The vehicle's external indicator light will remain constantly on to indicate this. If the external indicator light is not constantly on, unlocking is unsuccessful, and you can return to step S2 to perform the unlocking operation again. After successfully unlocking the locomotive wireless remote control system (RRC system), the driver can continue operating the wireless remote control 1.

[0093] In step S4: It is detected whether the driver has sequentially operated the unlocking plate tendon and the long / short end plate tendon on the wireless remote controller 1. The wireless remote controller 1 sends an unlocking command to the wireless remote control system host 2 wirelessly. After receiving the command, the wireless remote control system host 2 determines whether the sequence of operations in step S4 is correct.

[0094] (1) Allow unlocking plate tendon (i.e. allow coupler unlocking button 13): The driver operates the coupler unlocking button 13 to be in the allow unlocking position, that is, the coupler is allowed to be uncoupled;

[0095] (2) Long end / short end plate tendon (unlock coupler selection button 14): The driver can select which end of the locomotive coupler to unlock through operation.

[0096] At this point, the driver can determine whether the uncoupling operation is effective by observing whether the coupler is uncoupling (i.e., whether it is in step S4).

[0097] If the determination in step S4 is negative, proceed to step S3, whereby the driver again observes whether the locomotive's wireless remote control system is operational, i.e., whether the external indicator light is constantly on. If the indicator light is constantly on, it indicates that the locomotive's wireless remote control system is not locked, and the driver can then execute the unlock coupler command, i.e., proceed to step S4.

[0098] In step S5: if step S4 determines that the operation is valid, the RRC system outputs a decoupling permission command. That is, after the RRC system determines that the decoupling action is valid, the locomotive wireless remote control system (RRC system) will send a decoupling request to the TCMS system via the network.

[0099] Step S61: After receiving the uncoupling permission command (i.e., uncoupling request) output by the RRC system, the TCMS system of the locomotive confirms the speed status of the vehicle and the pressure of the brake cylinder of the vehicle.

[0100] In step S61, if the current locomotive speed is 0, then in step S7, the TCMS system maintains the hardware-allowed command for a continuous duration of ΔTB. In step S8, the corresponding uncoupling solenoid valve is energized, meaning that the uncoupling solenoid valve remains energized during the time period from time T20 to time T5. Where T5 = TB + ΔTB.

[0101] Step S62 is executed independently and in parallel with steps S61 to S8. That is, as long as the TCMS system determines that the RRC system has output the unhooking permission command at time T5 in step S62, the TCMS system will stop outputting the unhooking command (steps S621 and S622) even if steps S61, S7, S8 and S9 are still being executed.

[0102] When both the hardware permission of the locomotive wireless remote control system (i.e., the uncoupling permission command output by the RRC system) and the permission of the TCMS system (i.e., the judgment in step S61 is yes) are met, the uncoupling solenoid valve at the corresponding end is energized, causing the uncoupling action of the coupler at the corresponding end to be executed. Specifically, starting from time TB, new uncoupling permission commands output by the locomotive wireless remote control system (RRC system) are ignored within △TB (the unit can be seconds). That is, before time TB + △TB, even if the driver correctly operates the wireless remote control button again (i.e., the judgment in step S4 is yes), the RRC system will determine that the driver's operation is correct and will not update the value of TB. Only after time TB + △TB will the value of TB be updated according to the judgment in step S5.

[0103] If the pressure in the brake cylinder is less than P1, the locomotive's TCMS system will automatically apply braking force within a preset time ΔTC, ensuring the pressure in the brake cylinder is not less than a preset pressure value P2, where P2 ≥ P1. If the brake cylinder pressure is not less than P1, the locomotive's TCMS system will not execute the above process, maintaining the original brake cylinder pressure. This setting ensures that the locomotive itself will not move at the start of uncoupling, i.e., when no traction force is applied.

[0104] In step S61, after the TCMS system receives the uncoupling permission command output by the RRC system, if the vehicle's current speed is not 0, then in step RRCS611, the TCMS system determines that the uncoupling request issued by the RRC is invalid. At this time, since the TCMS has no output for uncoupling permission during the uncoupling process, the uncoupling solenoid valve is not energized, and the uncoupling solenoid valve does not operate, so the corresponding coupler (e.g., a coupler that can be pneumatically uncoupled) does not uncouple. This setting prevents the driver from accidentally operating the uncoupling plate while the vehicle is running.

[0105] In this embodiment, the time point at which the driver performs the correct operation in step S4 is recorded as TB. Of course, TB can also be set to the moment when the unhooking operation is effective, or the moment when the corresponding unhooking solenoid valve is energized.

[0106] Starting from time TB, the corresponding uncoupling solenoid valve remains energized until time TB+△TB. If time TB+△TB is exceeded, the uncoupling solenoid valve automatically de-energizes, returning to the locked state. Therefore, the driver needs to ensure that the current locomotive and its coupled locomotives are separated before time TB+△TB.

[0107] like Figure 2 As shown, according to the same inventive concept, the present invention also provides an uncoupling control system for a locomotive in wireless remote control mode. The locomotive has a wireless remote control system, which includes a wireless remote control system host 2 mounted on the locomotive and a wireless remote controller 1 wirelessly connected to the host 2. The output terminal of the wireless remote control system host 2 is connected to a locomotive controller 10. The control terminals of each uncoupling solenoid valve are respectively connected to the locomotive controller 10. The locomotive controller 10 is configured to execute the uncoupling control method described above. The locomotive controller 10 may be a network control system (TCMS) for the locomotive.

[0108] Based on the same inventive concept, the present invention also provides a locomotive, characterized in that it includes the above-mentioned uncoupling control system.

[0109] In this invention, when the driver operates the wireless remote control, he can be located near the vehicle coupler and observe whether the coupler is engaged or disengaged.

[0110] Example 2

[0111] When the locomotive is currently in wireless remote control mode, the uncoupling control method includes:

[0112] Step 1: Determine if the locomotive's wireless remote control system host 2 is unlocked; if it is unlocked, record the moment it unlocks and proceed to Step 2. If the wireless remote control system host is locked, continue with Step 1.

[0113] Step 2: Continue executing the first judgment; if the result of the first judgment is yes, then execute Step 3. If the current time has not reached TA+△TA, and the result of the first judgment is no, then continue executing Step 2, that is, continue executing the first judgment.

[0114] Step 3: Continue executing the second judgment; if the result of the second judgment is yes, the uncoupling operation is valid, and the uncoupling solenoid valve corresponding to the button operation for unlocking the coupler is energized, so that the corresponding coupler of the current locomotive is in the uncoupling state (when the time required to control the uncoupling solenoid valve to energize the uncoupling solenoid valve is not considered, it can also be understood as the moment when the uncoupling operation is valid), and proceed to Step 4. If the current time has not reached TA+△TA, and the result of the second judgment is no, then continue executing Step 3, that is, continue executing the second judgment.

[0115] Step 4: Determine whether the current time has reached TB+△TB;

[0116] If the current time does not reach TB+△TB and TA+△TA, then the third judgment continues to be executed; if the result of the third judgment is yes, then the unhooking control method is completed.

[0117] If the current time reaches TB+△TB but not TA+△TA, the corresponding uncoupling solenoid valve is de-energized, causing the corresponding coupler of the current locomotive to be locked, and the process jumps to step 3.

[0118] The difference between Embodiment 2 and Embodiment 1 is that the unhooking control method further includes: continuously judging whether the current time reaches TA+△TA. If the current time reaches TA+△TA and the unhooking control method is not completed, then the wireless remote control system host 2 is locked and the process jumps to step 1. If the current time reaches TA+△TA and the unhooking control method is completed, then the execution of the unhooking control method is completed. Step 1 further includes: if it is determined that the wireless remote control system host 2 is in an unlocked state, then the time when the wireless remote control system host 2 is unlocked is recorded.

[0119] That is, as long as the moment TA when the wireless remote control system host 2 is unlocked is recorded, the system continuously checks whether the current moment has reached TA+△TA. This check is independent of steps 2, 3, and 4. Even if steps 2, 3, or 4 are not completed, as long as the current moment has reached TA+△TA, the wireless remote control system host 2 is locked.

[0120] Wherein: TA is the moment when the wireless remote control system host 2 is unlocked as recorded in step 1, △TA is the second preset time interval; △TB < △TA. Preferably, the difference between △TA and △TB is in the range of [15 seconds, 60 seconds]; preferably, the range of △TA is [30 seconds, 120 seconds], and the range of △TB is [20 seconds, 60 seconds].

[0121] This invention relates to: a functional control strategy for safety locking under dynamic conditions in the automatic uncoupling function of locomotives and rolling stock; an automatic coupler safety locking control strategy under static conditions in locomotives and rolling stock; a safety uncoupling control strategy in static mode of locomotives; and a locomotive uncoupling time maintenance and safety locking control strategy. The systems involved in this invention include the locomotive's network control system (TCMS), locomotive wireless remote control system, and coupler control system.

[0122] like Figure 4 As shown in this embodiment 2, the time TB at which step S4 is completed needs to satisfy TB-TA < △TA, and the time T21 at which step S4 is completed needs to satisfy T21-TA < △TA.

[0123] In step S5, it is also necessary to determine whether the interval time of the operation in step S4 exceeds △TA (i.e., whether the current time has reached TA+△TA). If the driver's operation is correct and the interval time is less than △TA, the result of step S5 is yes. In step S5, if the wireless remote control system host 2 determines that the order of the operations or the interval time of the operations exceeds △TA incorrectly, then the operation in step S4 is deemed invalid, and the command issued by the driver through the wireless remote control is not executed, i.e., the process jumps to step S1.

[0124] In step S2, after recording time TA, the system continues to determine whether time T4 has been reached, where T4 = TA + ΔTA. If time TA is reached and the locomotive speed is 0 (V = 0), it is determined that the locomotive has not been running within the specified time ΔTA. The RRC system automatically locks the vehicle, the vehicle is in a locked state, the indicator light does not stay on, and the system jumps back to step S1.

[0125] about Figure 4 For a detailed explanation of the specific steps, please refer to the description in Example 1.

[0126] Starting from time TA, if time TA+△TA is reached, even if other operations are still being performed, if it is determined that the two locomotives in the coupled state have not been separated, that is, the vehicle has not moved away from the locomotive it is coupled to, then the process jumps back to step S1. During the operation, if the vehicle remains stationary after passing △TA from the start of TA, the locomotive wireless remote control system (RRC system) will automatically lock for protection to prevent the driver from forgetting to unlock the system.

[0127] Starting from time TB, the corresponding uncoupling solenoid valve remains energized until time TB+△TB. If time TB+△TB is exceeded, the uncoupling solenoid valve automatically de-energizes, returning to the locked state. Therefore, the driver needs to ensure that the current locomotive and its coupled locomotives are separated before time TB+△TB.

[0128] Example 3

[0129] like Figure 5 As shown, the difference between this embodiment 3 and embodiment 1 is that, between step S1 and step S2, step S11 is also included, that is, determining whether the indicator light is constantly on. If the determination is yes, then step S2 is not executed, but step S4 is executed directly.

[0130] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0131] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention. After reading this invention, those skilled in the art will understand that various equivalent modifications to the present invention fall within the scope defined by the appended claims. Unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

Claims

1. A method for uncoupling control in a locomotive wireless remote control mode, characterized in that: When the locomotive is currently in wireless remote control mode, the uncoupling control method includes: Step 1: Determine whether the locomotive's wireless remote control system host (2) is in an unlocked state; if the wireless remote control system host (2) is in an unlocked state, proceed to step 2; Step 2: Continue executing the first judgment; if the result of the first judgment is yes, then execute Step 3; Step 3: Continue to execute the second judgment; if the result of the second judgment is yes, the uncoupling operation is valid, the uncoupling solenoid valve corresponding to the button operation of the coupler unlocking is energized, so that the corresponding coupler of the current locomotive is in the uncoupling state, and proceed to step 4; Step 4: Determine whether the current time has reached TB+△TB; If TB+△TB has not been reached at the current moment, the third judgment continues to be executed; if the result of the third judgment is yes, the unhooking control method is completed. If the current time reaches TB+△TB, the corresponding uncoupling solenoid valve is de-energized, causing the corresponding coupler of the current locomotive to be locked, and the process jumps to step 3. Wherein, the first judgment is to determine whether the wireless remote controller (1) has the correct button operation for unlocking the coupler; the second judgment is whether the current locomotive speed is 0; the third judgment is to determine whether the coupler in the uncoupling state and the locomotive connected to the coupler have completed separation; TB is the moment when the result of the first judgment is yes, or the moment when the uncoupling operation is effective, or the moment when the corresponding uncoupling solenoid valve is energized; △TB is the first preset time interval; The wireless remote controller (1) has a traction / braking selection button (11) and a remote controller unlock button (12). The unhooking control method further includes: performing step P1 before step 1; Step P1: Determine whether the traction / braking selection button (11) is in the braking position and the remote control unlock button (12) is in the unlock position at the same time. If the determination result is yes, then set the wireless remote control system host (2) to the unlock state. The wireless remote controller (1) has a coupler unlock button (13) and a coupler unlock selection button (14); the coupler unlock selection button (14) has a first coupler selection position and a second coupler selection position; the first coupler and the second coupler are the couplers at both ends of the locomotive; If the allowed coupler unlock button (13) is detected to be in the allowed unlock position, the unlock coupler selection button (14) is detected to be in any coupler selection position, and the operation of the allowed coupler unlock button (13) is detected to precede the operation of the unlock coupler selection button (14), then it is determined to be a correct coupler unlock button operation.

2. The unhooking control method according to claim 1, characterized in that: The unhooking control method further includes: continuously judging whether the current time has reached TA+△TA. If the current time has reached TA+△TA and the unhooking control method has not been completed, the wireless remote control system host (2) is locked and jumps to step 1. Step 1 further includes: if it is determined that the wireless remote control system host (2) is in an unlocked state, then record the time when the wireless remote control system host (2) is unlocked; Where: TA is the time when the wireless remote control system host (2) is unlocked as recorded in step 1, △TA is the second preset time interval; △TB<△TA.

3. The unhooking control method according to claim 2, characterized in that: The difference between △TA and △TB ranges from [15 seconds to 60 seconds].

4. The unhooking control method according to claim 2, characterized in that: The value range of △TA is [30 seconds, 120 seconds], and the value range of △TB is [20 seconds, 60 seconds].

5. The unhooking control method according to claim 1, characterized in that: If, from the moment the corresponding uncoupling solenoid valve is energized to the current moment, there is at least a moment when the locomotive speed is greater than 0, or the interval between the two locomotives corresponding to the uncoupling coupler reaches a preset distance, then the two locomotives corresponding to the uncoupling coupler complete the separation.

6. The unhooking control method according to claim 1, characterized in that: In step 3, if the unhooking operation is effective, the following operation is also performed: Determine whether the pressure in the locomotive's brake cylinder is less than the pressure threshold P1. If the determination result is yes, then within a preset time △TC, ensure that the pressure in the brake cylinder is not less than the preset pressure value P2, where P2≥P1; otherwise, keep the pressure in the brake cylinder at the current pressure.

7. The unhooking control method according to claim 1, characterized in that: Step A1 is included before step 1; Step A1: Determine if the current locomotive speed is 0. If the result is yes, proceed to step 1.

8. The unhooking control method according to claim 1, characterized in that: The wireless remote controller (1) is equipped with an indicator device (16). When the wireless remote control system host (2) is in the unlocked state and the locked state respectively, the indicator device (16) is in the first state and the second state respectively; the first state and the second state are different states.

9. The unhooking control method according to claim 8, characterized in that: In step 1, if the indicator device (16) is detected to be in the first state, it is determined that the locomotive's wireless remote control system host (2) is in the unlocked state.

10. The unhooking control method according to claim 8, characterized in that: The indicator device (16) is an indicator light. The first state is the indicator light being constantly on or flashing, and the second state is the indicator light being off.

11. A decoupling control system for locomotive wireless remote control mode, characterized in that, The locomotive has a wireless remote control system, which includes a wireless remote control system host (2) installed on the locomotive and a wireless remote controller (1) connected to the wireless remote control system host (2) wirelessly. The output end of the wireless remote control system host (2) is connected to the locomotive controller (10). The control ends of each uncoupling solenoid valve are respectively connected to the locomotive controller (10). The locomotive controller (10) is configured to perform the uncoupling control method according to any one of claims 1-10.

12. A locomotive, characterized in that, Includes the unhooking control system as described in claim 11.

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