Emergency braking control method and system for locomotive wireless remote control mode and locomotive

Abstract

The invention provides an emergency braking control method and system for a locomotive wireless remote control mode and a locomotive. The emergency braking control method comprises the following steps: if the wireless remote control system host and the wireless remote controller are in a connection state and an emergency braking operation button of the wireless remote controller is located at an emergency braking cancelling position, enabling the second contact to be in a closed state; otherwise, the second contact is disconnected; when it is detected that the emergency braking circuit is in a disconnected state, the first contact is locked to be in the disconnected state, the first circuit and the second circuit are disconnected, and emergency braking is triggered; when it is detected that the wireless remote controller has key operation corresponding to emergency braking release and it is detected that the second contact is in a closed state, the first contact is closed; and when it is detected that the emergency braking circuit is in the closed state, the first line and the second line are both closed, and emergency braking is cancelled.

Description

Technical Field

[0001] The invention relates to an emergency brake control method and system for a locomotive in a wireless remote control mode and a locomotive, and belongs to the field of emergency brake application and relief indication and control in a locomotive wireless remote control mode. Background Art

[0002] like Figure 1 As shown, an emergency brake circuit 20 is provided on an existing locomotive or urban rail vehicle. In the emergency brake circuit 20, a plurality of contacts (switches) are connected in series between the power supply terminal VCC of the power supply and the reference ground GND (0 level). Each emergency brake trigger device corresponds to a corresponding contact in the emergency brake circuit. When any emergency brake condition is triggered, the corresponding emergency brake trigger device disconnects the corresponding contact in the emergency brake circuit, so that the emergency brake circuit is disconnected, thereby causing the brake system to apply emergency braking. In the emergency brake circuit, at least one contact (such as Figure 1 The on and off of the first contact K1 shown in the figure is controlled by the locomotive control system 10. For example, when the driver needs to apply emergency braking, the driver only needs to press the emergency braking operation button to disconnect the contact S1 corresponding to the emergency braking operation button, and the first control coil LM1 and the second control coil LM2 in the emergency braking circuit 20 are both de-energized, so that the line between the locomotive's traction converter and the corresponding power supply, and the line between the locomotive's auxiliary converter and the corresponding power supply are disconnected, thereby disconnecting the power supply to the locomotive traction system and the locomotive auxiliary system. At the same time, after the locomotive control system 10 detects that the emergency braking operation button is pressed, it will order the brake system to perform an emergency braking operation.

[0003] In the wireless remote control mode (RRC), the driver is not in the driver's cab and cannot operate the emergency brake button in the driver's cab. If the locomotive's emergency brake is to be implemented in the wireless remote control mode, the driver can only operate it from outside the locomotive by pressing the emergency brake button on the wireless remote control.

[0004] If you use the following in wireless remote control mode: Figure 1In the emergency brake system shown, the locomotive control system 10 receives the signal of the wireless remote controller in a wireless form; if it is detected that the emergency brake operation button is pressed, the emergency brake circuit is controlled to be disconnected, the connection between the locomotive's traction converter and auxiliary converter and the power supply is disconnected, and the brake system is instructed to perform emergency braking; if it is detected that the emergency brake operation button returns to its original position (i.e., returns to the unpressed state), the locomotive control system is instructed to perform the emergency brake relief operation and cancel the emergency brake, i.e., the brake system no longer performs the emergency brake operation. However, during the operation, the driver may mistakenly operate the button of the wireless remote controller, causing the emergency brake operation button of the wireless remote controller to return to its original position from the pressed state, so that the locomotive control system 10 receives an erroneous indication signal, resulting in emergency brake relief, causing safety problems. Summary of the invention

[0005] The problem to be solved by the present invention is that the driver may mistakenly operate the button of the wireless remote control during emergency braking, causing the emergency braking operation button of the wireless remote control to return to its original position from the pressed state, so that the locomotive control system 10 receives an erroneous indication signal, resulting in emergency braking relief. An emergency braking control method for a locomotive wireless remote control mode is provided.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an emergency brake control method for a locomotive wireless remote control mode, the locomotive (100) having an emergency brake circuit (20), a first contact (K1) connected to the emergency brake circuit (20), and a locomotive wireless remote control system, the locomotive wireless remote control system comprising a wireless remote control system host (2) arranged on the locomotive (100), and a wireless remote control (1) connected to the wireless remote control system host (2) in a wireless manner; The locomotive wireless remote control system further comprises a second contact (K2), wherein the first contact (K1) and the second contact (K2) are connected in series in an emergency brake circuit (20); When the locomotive (100) is in a wireless remote control mode, the emergency braking control method comprises: If the wireless remote control system host (2) and the wireless remote control (1) are in a connected state and the emergency brake operation button (15) of the wireless remote control (1) is in the emergency brake canceling position, the second contact (K2) is closed; otherwise, the second contact (K2) is opened; When it is detected that the emergency brake circuit (20) is in an open state, the first contact (K1) is locked in an open state, the first circuit is disconnected, and the second circuit is disconnected, thereby triggering the emergency brake; when it is detected that the wireless remote controller (1) has a key operation corresponding to the release of the emergency brake, and the second contact (K2) is detected to be in a closed state, the first contact (K1) is closed; when it is detected that the emergency brake circuit (20) is in a closed state, both the first circuit and the second circuit are closed, and the emergency brake is cancelled; The first line is a line between a traction converter of the locomotive and a corresponding power supply, and the second line is a line between an auxiliary converter of the locomotive and a corresponding power supply.

[0007] According to the above scheme, as long as the connection between the wireless remote control system host and the wireless remote controller is disconnected, or the emergency brake operation button is in the emergency brake application position, the second contact connected in the emergency brake circuit is disconnected, so that the emergency brake circuit is in a disconnected state, thereby disconnecting the first line, disconnecting the second line, and triggering the emergency brake. The applicant found during research that since the emergency brake operation button is not pressed and the connection between the wireless remote control system host and the wireless remote controller is disconnected, the second contact is closed. If an emergency occurs, the pressed emergency brake operation button is mistakenly operated as popping up. If the reclosed second contact can reclose the emergency brake circuit, the emergency brake is cancelled, which will cause safety problems. The applicant found during research that as long as the emergency brake circuit is detected to be disconnected, it means that an event causing emergency braking has occurred, and the emergency brake event causes a certain contact in the emergency brake circuit to be disconnected. In the present invention, as long as the emergency brake circuit is detected to be in a disconnected state, the first contact is locked in a disconnected state, and the emergency brake circuit is not allowed to be closed by reclosing the disconnected contact corresponding to the occurrence of the emergency brake event. Instead, the first contact can only be closed when it is detected that the wireless remote controller has a key operation corresponding to the release of the emergency brake and the second contact is closed. If after the first contact and the second contact are closed, there are no other contacts in the emergency braking circuit that are disconnected (that is, no other situations that cause emergency braking occur, or other situations that cause emergency braking have been resolved), the emergency braking circuit can be closed, thereby ensuring the safety of the locomotive when emergency braking occurs.

[0008] In the above technical solution, an indicator device (3) is arranged outside the locomotive (100); when it is detected that the emergency brake circuit (20) is in a disconnected state or the emergency brake is triggered, the state of the indicator device (3) is set to a first state; if the first circuit and the second circuit are both in a closed state and the feedback signal of the brake system (30) is a non-emergency brake state, the state of the indicator device (3) is set to a second state; if any of the following occurs: the first circuit is in an unclosed state, the second circuit is in an unclosed state, the feedback signal of the brake system (30) is an emergency brake state, and the emergency brake circuit (20) is in a closed state, the state of the indicator device (3) is set to a third state; the first state, the second state, and the third state are different states of the indicator device (3).

[0009] The applicant found that in the wireless remote control mode, since the driver is not in the driver's cab, he cannot understand the status of the vehicle through the monitoring equipment (such as display equipment) in the driver's cab. Therefore, during the emergency braking process, if the driver misjudges the status of the locomotive, there is a greater safety risk. At the same time, during the driver's operation, it is impossible to determine whether the operation is effective. Therefore, the original emergency braking operation method in which the driver operates and observes the prompts of related problems on the display screen in the driver's cab is not applicable in the RRC mode. According to the above scheme of the present application, since the indicator device is in different first states (emergency braking state), second states (normal working state), and third states (fault state) in different states, the driver can understand the state of the locomotive through the indicator device located on the outside of the locomotive, which is convenient for the driver to perform subsequent operations according to the state of the locomotive and reduce the risk of misjudgment.

[0010] In the above technical solution, the wireless remote controller (1) has a traction / brake selection button (11) and a remote controller unlocking button (12); If it is detected that the traction / brake selection button (11) is in the brake application position, and it is detected that the remote controller unlocking button (12) is in the unlocking position, then it is detected that the wireless remote controller (1) has a button operation corresponding to emergency brake release.

[0011] According to the above solution, the second contact can be closed only when the driver operates the wireless remote controller so that there is a key operation corresponding to the release of the emergency brake.

[0012] Through the above settings, the remote control unlock button is unlocked within a certain period of time (i.e., the preset time interval △T) after unlocking. After the time interval, the remote control unlock button returns to the locked position to avoid erroneous operation caused by the driver accidentally touching the remote control.

[0013] In the above technical solution, when all contacts connected to the emergency brake circuit (20) are in a closed state, the emergency brake circuit (20) is in a closed state; otherwise, the emergency brake circuit (20) is in an open state.

[0014] According to the above scheme, the contacts that cause emergency braking are all connected in the emergency braking circuit. If any one of the contacts is disconnected, the emergency braking circuit can be disconnected, thereby triggering the emergency braking.

[0015] In the above technical solution, after the emergency brake is triggered, when the pressure in the brake cylinder of the locomotive (100) is within the set emergency brake pressure range, the feedback signal of the brake system (30) is an emergency brake state.

[0016] In the above technical solution, the indicating device (3) is an indicator light; when the indicator light is in the first state, the indicator light is always on; when the indicator light is in the second state, the indicator light is off; and when the indicator light is in the third state, the indicator light is flashing.

[0017] According to the above scheme, according to the different states of the indicator light, it is convenient for the driver located outside the vehicle to understand the different states of the vehicle.

[0018] In the above technical solution, after the emergency brake is cancelled, the brake system (30) executes the maximum common brake instruction stored before the emergency brake is triggered.

[0019] According to the above scheme, after the emergency brake is cancelled, the locomotive is in the maximum common braking state. In the present invention, common braking is the braking state of non-emergency braking.

[0020] In the above technical solution, if after the operation of setting the second contact (K2) to the closed state, it is detected that the second contact (K2) is not closed, the fault is reported to the locomotive control system (10).

[0021] In the above technical solution, the first contact (K1) is controlled by the locomotive control system (10), the state of the emergency brake circuit (20) is detected by the locomotive control system (10), and the locomotive control system (10) is used to send instructions to the brake system (30) and to receive feedback signals from the brake system (30). The second contact (K2) is controlled by the wireless remote control system host (2).

[0022] According to the same inventive concept, the present invention also provides an emergency brake control system for a locomotive wireless remote control mode. The emergency brake control system can be used to implement the above-mentioned emergency brake control method. The emergency brake control system includes a first contact (K1) connected to an emergency brake circuit (20), a locomotive control system (10), a locomotive wireless remote control system, and a brake system (30). The locomotive wireless remote control system includes a wireless remote control system host (2) arranged on a locomotive (100), and a wireless remote controller (1) connected to the wireless remote control system host (2) by wireless means; The locomotive wireless remote control system further comprises a second contact (K2), wherein the first contact (K1) and the second contact (K2) are connected in series in an emergency brake circuit (20); The braking system (30) is used to: trigger emergency braking when the emergency braking circuit (20) is in an open state, and cancel emergency braking when the emergency braking circuit (20) is in a closed state; The wireless remote control system host (2) is used to: when the wireless remote control system host (2) and the wireless remote control (1) are in a connected state and the emergency brake operation button of the wireless remote control (1) is in the emergency brake canceling position, the second contact (K2) is in a closed state; when the wireless remote control system host (2) and the wireless remote control (1) are in a disconnected state and the emergency brake operation button (15) is in the emergency brake applying position, the second contact (K2) is opened; The locomotive control system (10) is used to: when detecting that the emergency brake circuit (20) is in an open state, lock the first contact (K1) in an open state, disconnect the first line, and disconnect the second line; when detecting that the wireless remote controller (1) has a key operation corresponding to the emergency brake release and detecting that the second contact (K2) is in a closed state, close the first contact (K1); when detecting that the emergency brake circuit (20) is in a closed state, close both the first line and the second line; wherein the first line is a line between a traction converter of the locomotive and a corresponding power supply, and the second line is a line between an auxiliary converter of the locomotive and a corresponding power supply.

[0023] In a preferred technical solution, an indicator device (3) is provided outside the locomotive (100); the locomotive control system (10) is further used to: when it is detected that the emergency brake circuit (20) is in a disconnected state or the emergency brake is triggered, set the state of the indicator device (3) to a first state; if the first circuit and the second circuit are both in a closed state and the feedback signal of the brake system (30) is a non-emergency brake state, set the state of the indicator device (3) to a second state; if any of the following occurs: the first circuit is in an unclosed state, the second circuit is in an unclosed state, and the feedback signal of the brake system (30) is an emergency brake state, set the state of the indicator device (3) to a third state; the first state, the second state, and the third state are different states of the indicator device (3).

[0024] According to the above scheme, as long as the connection between the wireless remote control system host and the wireless remote control is disconnected, or the emergency brake operation button is pressed, the second contact connected in the emergency brake circuit is disconnected, so that the emergency brake circuit is in a disconnected state, thereby disconnecting the first line, disconnecting the second line, and triggering the emergency brake. The applicant found during research that since the emergency brake operation button is not pressed and the connection between the wireless remote control system host and the wireless remote control is not made, the second contact is closed. If an emergency occurs, the pressed emergency brake operation button is mistakenly operated as popping up. If the reclosed second contact can reclose the emergency brake circuit, the emergency brake is cancelled, which will cause safety problems. The applicant found during research that as long as the emergency brake circuit is detected to be disconnected, it means that an event causing emergency braking has occurred, and the emergency brake event causes a certain contact in the emergency brake circuit to be disconnected. In the present invention, as long as the emergency brake circuit is detected to be in a disconnected state, the first contact is locked in a disconnected state, and the emergency brake circuit is not allowed to be closed by reclosing the disconnected contact corresponding to the occurrence of the emergency brake event. Instead, the first contact can only be closed when it is detected that the wireless remote control has a key operation corresponding to the release of the emergency brake and the second contact is closed. If, after the first contact and the second contact are closed, there is no other contact disconnected in the emergency brake circuit (i.e., no other situations causing emergency brake occur, or other situations causing emergency brake have been resolved), the emergency brake circuit can be closed, thereby ensuring the safety of the locomotive when emergency brake occurs. Since the indicating device is in different first, second, and third states in different states, the driver can understand the state of the locomotive through the indicating device located outside the locomotive, which facilitates the driver to perform subsequent operations according to the state of the locomotive. According to the same inventive concept, the present invention also provides a locomotive, wherein the locomotive (100) includes the above-mentioned emergency brake control system.

[0025] The advantages and positive effects of the present invention are: the present invention can be applied to the key emergency braking and emergency brake release systems of the locomotive system adopting the RRC mode, the system has a fast response, the system has good stability and reliability, and it is also convenient for the driver to operate and observe. There is no need to observe the display equipment in the driver's cab, and the emergency braking application and emergency brake release operations can be completed safely, simply and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1It is a schematic diagram of the connection structure of the locomotive control system, the braking system, and the emergency braking circuit in the emergency braking control system of the prior art; Figure 2 It is a schematic diagram of the connection structure of the emergency brake control system according to an embodiment of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the connection between a locomotive power supply, a traction motor and an auxiliary load in an embodiment of the present invention.

[0029] Figure 4 is a schematic diagram of the structure of keys and buttons on a wireless remote controller according to an embodiment of the present invention; Figure 5 4 is a flow chart of an emergency braking control method according to an embodiment of the present invention.

[0030] In the above drawings: Main circuit breaker H1; first contact K1; second contact K2; signal system control contact KA; Wireless remote controller 1; wireless remote control system host 2; indicating device 3; traction converter 41; auxiliary converter 42; traction motor 51; auxiliary load 52; contact S1 corresponding to the emergency brake operation button; Traction / brake selection button 11; remote control unlocking button 12; emergency brake operation button 15; indicator device 3; first base 11A; second base 12A; third base 15A; Locomotive 100; locomotive control system 10; emergency brake circuit 20; brake system 30; locomotive power supply 40; traction converter 41, traction motor 51; auxiliary converter 42; auxiliary load 52; First control coil LM1; second control coil LM2; first control contact KM1; second control contact KM2; power supply terminal VCC. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0032] This embodiment provides an emergency braking control method for a locomotive in a wireless remote control mode.

[0033] like Figure 2As shown, the locomotive 100 has an emergency brake circuit 20, a first contact K1 connected to the emergency brake circuit 20, and a locomotive wireless remote control system, wherein the locomotive wireless remote control system includes a wireless remote control system host 2 disposed on the locomotive 100, and a wireless remote controller 1 wirelessly connected to the wireless remote control system host 2. The locomotive wireless remote control system also includes a second contact K2, and the first contact K1 and the second contact K2 are connected in series in the emergency brake circuit 20.

[0034] like Figure 5 As shown, when the locomotive 100 is in the wireless remote control mode, the emergency braking control method includes: If the wireless remote control system host 2 and the wireless remote controller 1 are connected, and the emergency brake operation button 15 of the wireless remote controller 1 is in the emergency brake cancel position (i.e. the emergency brake operation button 15 is returned to the position and is not pressed), the second contact K2 is closed; otherwise, the second contact K2 is opened; When the emergency brake circuit 20 is detected to be in an open state, the first contact K1 is locked in an open state, the first circuit is disconnected, the second circuit is disconnected, and the emergency brake is triggered; when the wireless remote controller 1 is detected to have a key operation corresponding to the emergency brake release, and the second contact K2 is detected to be in a closed state, the first contact K1 is closed; when the emergency brake circuit 20 is detected to be in a closed state, both the first circuit and the second circuit are closed, and the emergency brake is canceled; The first line is a line between a traction converter of the locomotive and a corresponding power supply, and the second line is a line between an auxiliary converter of the locomotive and a corresponding power supply.

[0035] like Figure 2 , Figure 3 As shown, the first control contact KM1 is a contact corresponding to the first control coil LM1, and the second control contact KM2 is a contact corresponding to the second control coil LM2. When the emergency brake circuit 20 is in a closed state (i.e., the line between VCC and GND is connected, i.e., all coils connected in series with the first contact on the emergency brake circuit 20 are in a powered state), the first control coil LM1 and the second control coil LM2 are powered, and the first control contact KM1 and the second control contact KM2 are closed; when the emergency brake circuit 20 is in an open state (i.e., any contact on the line between VCC and GND is disconnected, so that the line between VCC and GND is disconnected, i.e., all coils connected in series with the first contact on the emergency brake circuit 20 are in a powered-off state), the first control coil LM1 and the second control coil LM2 are powered-off, and the first control contact KM1 and the second control contact KM2 are disconnected.

[0036] like Figure 2As shown, the emergency brake circuit 20 is also provided with a signal system control contact KA. When other situations causing emergency brakes (such as locomotive overspeed) are detected, the signal system of the locomotive (not shown in the figure) disconnects the signal system control contact KA, thereby disconnecting the emergency brake circuit 20. When the locomotive control system 10 detects that the emergency brake circuit 20 is disconnected, the first contact K1 is locked in the disconnected state.

[0037] Figure 2 In the embodiment, if any one of the contacts (ie, the switch) in the emergency brake circuit 20 is in an open state, the emergency brake circuit is in an open state; if all the contacts in the emergency brake circuit are in a closed state, the emergency brake circuit 20 is in a closed state.

[0038] like Figure 3 As shown, the first line refers to the line between the locomotive power supply 40 and the traction converter 41, and the second line refers to the line between the locomotive power supply 40 and the auxiliary converter 42. The traction load includes the traction motor 51. The auxiliary load 52 includes the locomotive lighting system, the air conditioning system, etc.

[0039] The main circuit breaker H1 is located between the locomotive power supply 40 and the locomotive main circuit and locomotive auxiliary circuit. The locomotive power supply 40 can be an external power supply of the locomotive, or a power supply inside the locomotive (such as a battery).

[0040] When the main circuit breaker H1 and the first control contact KM1 are both in the closed state, the first circuit is in the closed state. When either the main circuit breaker H1 or the first control contact KM1 is in the open state, the first circuit is in the open state.

[0041] When the main circuit breaker H1 and the second control contact KM2 are both in the closed state, the second circuit is in the closed state. When either the main circuit breaker H1 or the second control contact KM2 is in the open state, the second circuit is in the open state.

[0042] In this embodiment, the control coil corresponding to the main circuit breaker H1 can also be connected in series in the emergency brake circuit. Of course, the first control contact KM1 and the second control contact KM1 can also be omitted, that is, the on and off of the first circuit and the second circuit are controlled according to the on and off of the main circuit breaker H1.

[0043] The locomotive 100 is provided with an indication device 3 on its exterior. The indication device 3 may be optionally provided on the wireless remote controller 1, such as Figure 4 shown.

[0044] When it is detected that the emergency brake circuit 20 is in the disconnected state or the emergency brake is triggered, the state of the indicator device 3 is set to the first state; if the first circuit and the second circuit are both in the closed state, and the feedback signal of the brake system 30 is a non-emergency brake state, the state of the indicator device 3 is set to the second state; if any of the first circuit is in the unclosed state, the second circuit is in the unclosed state, and the feedback signal of the brake system 30 is an emergency brake state, the state of the indicator device 3 is set to the third state; the first state, the second state, and the third state are different states of the indicator device 3; In this embodiment, the indicating device 3 is an indicator light; when the indicator light is in the first state, the indicator light is always on; when the indicator light is in the second state, the indicator light is off; when the indicator light is in the third state, the indicator light is flashing.

[0045] like Figure 4 As shown, the wireless remote controller 1 has a traction / brake selection button 11 , a remote controller unlocking button 12 , and an emergency brake operation button 15 .

[0046] The emergency brake operation button 15 can be located in the emergency brake application position (the button is pressed) or the emergency brake cancellation position (the button is reset, that is, the button is not pressed).

[0047] If it is detected that the traction / brake selection button 11 is in the brake application position, and it is detected that the remote controller unlock button 12 is in the unlock position, then it is detected that the wireless remote controller 1 has a button operation corresponding to emergency brake release.

[0048] When all contacts connected in the emergency brake circuit 20 are in a closed state, the emergency brake circuit 20 is in a closed state; otherwise, the emergency brake circuit 20 is in an open state. A relay coil (e.g., a first control coil LM1; a second control coil LM2) connected in series with the first contact may be provided in the emergency brake circuit. The two electrical connection terminals of the emergency brake circuit may be electrically connected to the power supply terminal VCC and the ground terminal GND, respectively.

[0049] When the pressure in the brake cylinder of the locomotive 100 is within the set emergency brake pressure range, the feedback signal of the brake system 30 is an emergency brake state.

[0050] After the emergency brake is cancelled (relieving), the brake system 30 executes the maximum common brake command stored before the emergency brake is triggered. That is, before the emergency brake is executed, the maximum value of the common brake command (i.e., non-emergency brake command) that the brake system 30 has executed is stored. After the emergency brake is cancelled, the brake system 30 executes the maximum common brake command.

[0051] If it is detected that the second contact K2 is not closed after the operation of setting the second contact K2 to the closed state, the fault is reported to the locomotive control system 10 .

[0052] The first contact K1 is controlled by the locomotive control system 10, the state of the emergency brake circuit 20 is detected by the locomotive control system 10, and the locomotive control system 10 is used to send instructions to the brake system 30 and receive feedback signals from the brake system 30; the second contact K2 is controlled by the wireless remote control system host 2.

[0053] According to the same inventive concept, the present invention also provides an emergency brake control system for a locomotive wireless remote control mode, the emergency brake control system includes a first contact K1 connected to an emergency brake circuit 20, a locomotive control system 10, a locomotive wireless remote control system, and a brake system 30, the locomotive wireless remote control system includes a wireless remote control system host 2 provided on a locomotive 100, and a wireless remote controller 1 wirelessly connected to the wireless remote control system host 2. The locomotive wireless remote control system also includes a second contact K2, the first contact K1 and the second contact K2 are connected in series in the emergency brake circuit 20.

[0054] The braking system 30 is used to trigger emergency braking when the emergency braking circuit 20 is in an open state, and cancel emergency braking (ie, the braking system 30 no longer performs emergency braking) when the emergency braking circuit 20 is in a closed state.

[0055] The wireless remote control system host 2 is used to: close the second contact K2 when the wireless remote control system host 2 and the wireless remote controller 1 are connected and the emergency brake operation button of the wireless remote controller 1 is in the emergency brake canceling position; and disconnect the second contact K2 when any of the following situations occurs: the wireless remote control system host 2 and the wireless remote controller 1 are not connected and the emergency brake operation button 15 is in the emergency brake applying position.

[0056] The locomotive control system 10 is used to: when it is detected that the emergency brake circuit 20 is in an open state, lock the first contact K1 in an open state, disconnect the first line, and disconnect the second line; when it is detected that the wireless remote controller 1 has a key operation corresponding to the emergency brake release, and the second contact K2 is detected to be in a closed state, close the first contact K1; when it is detected that the emergency brake circuit 20 is in a closed state, close both the first line and the second line; wherein the first line is the line between the traction converter of the locomotive and the corresponding power supply, and the second line is the line between the auxiliary converter of the locomotive and the corresponding power supply; Preferably, an indicating device 3 is provided on the outside of the locomotive 100; the locomotive control system 10 is also used for: when it is detected that the emergency braking circuit 20 is in a disconnected state or the emergency braking is triggered, setting the state of the indicating device 3 to a first state; if the first circuit and the second circuit are both in a closed state, and the feedback signal of the braking system 30 is a non-emergency braking state, setting the state of the indicating device 3 to a second state; if any of the following occurs: the first circuit is in an unclosed state, the second circuit is in an unclosed state, and the feedback signal of the braking system 30 is an emergency braking state, setting the state of the indicating device 3 to a third state; the first state, the second state, and the third state are different states of the indicating device 3.

[0057] According to the same inventive concept, the present invention also provides a locomotive, wherein the locomotive 100 includes the above-mentioned emergency brake control system.

[0058] like Figure 4 As shown, on the wireless remote controller 1, the traction / brake selection button 11, the remote controller unlock button 12, and the emergency brake operation button 15 are respectively installed on the first base 11A, the second base 12A, and the third base 15A. In this embodiment, the button can be a plate tendon. The selectable positions of the traction / brake selection button 11 include the brake holding position and the brake application position. Applying force can make the traction / brake selection button 11 reach the brake application position. When no force is applied, the traction / brake selection button 11 resets itself back 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 can make the remote controller unlock button 12 reach the unlock position. When no force is applied, the remote controller unlock button 12 resets itself back to the zero position. The selectable positions of the emergency brake operation button 15 include the brake application position and the emergency brake cancellation position. The selectable positions of the emergency brake operation button 15 include the emergency brake application position (press the button) and the emergency brake cancellation position (pull out the button).

[0059] The embodiments of the present invention are described in further detail below.

[0060] The present invention relates to: a control strategy for the indicator light status during the emergency braking application and release process in a locomotive wireless remote control mode (hereinafter referred to as RRC mode); a safety control strategy after emergency braking in the locomotive RRC mode; a control strategy for emergency braking release in the locomotive RRC mode; and a locomotive main circuit control strategy during the emergency braking and release process in the locomotive RRC mode.

[0061] The system architecture of the present invention includes: a locomotive control system 10 (i.e., a locomotive network control system, hereinafter referred to as a TCMS system), and a wireless remote control system. The present invention also relates to a locomotive braking system that performs software and hardware judgment and safety interlocking, realizes the functions of emergency braking and emergency braking safety relief of the locomotive, and can ensure the effectiveness of the driver's operation through the indicator light outside the driver's room.

[0062] (1) Emergency braking application process in RRC mode like Figure 5 As shown, after the driver presses the emergency brake operation button 15 on the wireless remote controller 1, the wireless remote controller 1 sends an emergency command signal to the locomotive wireless remote control system host 2. After receiving the emergency command signal, the wireless remote control system host 2 immediately cuts off the emergency brake circuit 20 through hardware and sends an emergency brake command signal to the locomotive control system 10. After the emergency brake circuit 20 is cut off, the brake system 30 immediately executes the hardware emergency brake command after receiving the emergency brake command signal from the hardware IO port through hardware. At this time, the locomotive control system 10 immediately transmits a common brake signal with a duration of T1 seconds to the brake system through the network after detecting that the emergency brake circuit 20 is cut off (the signal will be stored by the brake system as the locomotive braking state before emergency braking). Among them, the braking force (or braking force percentage) here is proportional to the duration of the transmitted signal. Therefore, the sending time T1, that is, the corresponding proportional braking force, is used as the braking force executed by the brake system after the emergency brake is relieved. At the same time, the locomotive TCMS system drives the hardware of the TCMS system to cut off the emergency brake circuit 20 and lock the emergency brake circuit to the disconnected state. When the brake system exhausts to the emergency brake pressure range specified by the brake system, the brake system sends an emergency brake status feedback signal to the TCMS system. After the TCMS system receives the emergency brake status feedback signal from the brake system, the TCMS system drives the indicator light circuit to change the status of the indicator light from the operating state to the emergency brake state. The driver can understand that the vehicle is in the emergency brake state after the driver operates the emergency brake through the status of the indicator light outside the locomotive.

[0063] (2) Emergency braking relief process in RRC mode When emergency brake relief is required (i.e., cancel the emergency brake command), the driver can pull up the emergency brake operation button 15 of the wireless remote controller 1, and then the wireless remote control system host 2 will cancel the emergency command after receiving the signal. At this time, after the driver operates the wireless remote controller 1 to perform emergency brake relief operation (i.e., the traction / brake selection button 11 is in the brake application position, and the remote control unlocking button 12 is in the unlocking position), the wireless remote control system host 2 will send a network command of emergency brake relief to the TCMS system after receiving the effective emergency brake relief command and determining that all the contacts in series in the emergency brake circuit 20 have been closed. After the TCMS system receives the command from the RRC system regarding the driver's request to relieve the emergency brake, it will first unlock the lock of the emergency brake circuit 20 in the disconnected state and close the first contact K1 controlled by the locomotive control system in the emergency brake circuit 20. At this time, after the brake system detects that the emergency brake circuit 20 has been successfully rebuilt, it will immediately execute the maximum common brake command stored by the TCMS system before the emergency brake, that is, the brake of the locomotive will be changed from emergency brake to maximum common brake. After confirming that the entire emergency brake circuit 20 has not been disconnected (i.e., all contacts in series are closed), the TCMS system will send a brake hold signal to the brake system. At the same time, a command signal for closing the main circuit breaker (also known as HSCB) is sent, and the locomotive main circuit (i.e., the traction circuit including the traction motor and traction converter) and the locomotive auxiliary circuit (i.e., the circuit including the auxiliary load and the auxiliary converter) are restarted. After the brake system completes the state transition, a state signal that the brake is in an emergency state will be sent to the locomotive TCMS system. After the locomotive TCMS system receives the signal, and when the line between the traction converter and the locomotive power supply and the line between the auxiliary converter and the locomotive power supply are successfully closed, and the locomotive main circuit and locomotive auxiliary circuit are successfully restarted, the state of the drive indicator device is to show that the RRC system is in normal operation, that is, the emergency brake is successfully relieved. If the locomotive main circuit and locomotive auxiliary circuit cannot be started successfully, the locomotive TCMS system will drive the indicator light to the locomotive fault display state, and tell the driver through the light that the locomotive has a fault, and the driver can get on the car to check.

[0064] (3) Emergency braking and release process without driver operation in RRC mode This working condition is that the key protection system in the other emergency brake circuit 20 of the locomotive in the RRC mode triggers the emergency brake through the emergency brake circuit 20, which is a passive protection inside the locomotive, that is, the emergency source is other systems on the emergency brake circuit 20 inside the locomotive. For example, when the locomotive speed exceeds the set speed threshold, the signal system disconnects the signal system control contact KA. Compared with the emergency brake operated by the driver, its braking application process lacks the link of receiving the signal of the wireless remote control system host. For this emergency brake, before relief, the driver needs to judge whether the emergency source is cancelled after the emergency brake (for example, whether the speed is less than the set speed threshold) based on the vehicle status and experience, that is, to judge whether the contact on the emergency brake circuit 20 that triggers the emergency brake is closed. After the driver eliminates the emergency source, the relief process does not need to pull out the emergency brake operation button 15 (the driver did not press it in the early stage, so there is no need to pull it out again), and the rest is the same as the emergency brake relief process operated by the driver in the RRC system.

[0065] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention should still be included in the scope of the present invention. After reading the present invention, the modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Claims

1. An emergency brake control method for a locomotive wireless remote control mode, the locomotive (100) comprising an emergency brake circuit (20), a first contact (K1) connected to the emergency brake circuit (20), and a locomotive wireless remote control system, the locomotive wireless remote control system comprising a wireless remote control system host (2) arranged on the locomotive (100), and a wireless remote controller (1) connected to the wireless remote control system host (2) by wireless means; characterized in that: The locomotive wireless remote control system further comprises a second contact (K2), wherein the first contact (K1) and the second contact (K2) are connected in series in an emergency brake circuit (20); When the locomotive (100) is in a wireless remote control mode, the emergency braking control method comprises: If the wireless remote control system host (2) and the wireless remote control (1) are in a connected state and the emergency brake operation button (15) of the wireless remote control (1) is in the emergency brake canceling position, the second contact (K2) is closed; otherwise, the second contact (K2) is opened; When it is detected that the emergency brake circuit (20) is in an open state, the first contact (K1) is locked in an open state, the first circuit is disconnected, the second circuit is disconnected, and the emergency brake is triggered; when it is detected that the wireless remote controller (1) has a key operation corresponding to the emergency brake release and the second contact (K2) is detected to be in a closed state, the first contact (K1) is closed; when it is detected that the emergency brake circuit (20) is in a closed state, both the first circuit and the second circuit are closed, and the emergency brake is cancelled; The first line is a line between a traction converter of the locomotive and a corresponding power supply, and the second line is a line between an auxiliary converter of the locomotive and a corresponding power supply.

2. The emergency brake control method according to claim 1, characterized in that: The locomotive (100) is provided with an indication device (3) on the outside; When it is detected that the emergency braking circuit (20) is in an open state or the emergency braking is triggered, the state of the indicating device (3) is set to a first state; if the first circuit and the second circuit are both in a closed state and the feedback signal of the braking system (30) is a non-emergency braking state, the state of the indicating device (3) is set to a second state; if any of the following occurs: the first circuit is in an open state, the second circuit is in an open state, the feedback signal of the braking system (30) is an emergency braking state, and the emergency braking circuit (20) is in a closed state, the state of the indicating device (3) is set to a third state; the first state, the second state, and the third state are different states of the indicating device (3); Preferably, the indicating device (3) is an indicator light; when the indicator light is in the first state, the indicator light is constantly on; when the indicator light is in the second state, the indicator light is off; and when the indicator light is in the third state, the indicator light is flashing.

3. The emergency brake control method according to claim 1, characterized in that: The wireless remote controller (1) has a traction / brake selection button (11) and a remote controller unlocking button (12); If it is detected that the traction / brake selection button (11) is in the brake application position and the remote controller unlocking button (12) is in the unlocking position at the same time, it is detected that the wireless remote controller (1) has a button operation corresponding to emergency brake release.

4. The emergency brake control method according to claim 1, characterized in that: When all contacts connected in the emergency brake circuit (20) are in a closed state, the emergency brake circuit (20) is in a closed state; otherwise, the emergency brake circuit (20) is in an open state.

5. The emergency brake control method according to claim 1, characterized in that: After the emergency brake is triggered, when the pressure in the brake cylinder of the locomotive (100) is within the set emergency brake pressure range, the feedback signal of the brake system (30) is in the emergency brake state.

6. The emergency brake control method according to claim 1, characterized in that: After the emergency brake is cancelled, the brake system (30) executes the maximum common brake command stored before the emergency brake is triggered.

7. The emergency brake control method according to claim 1, characterized in that: If, after the operation of setting the second contact (K2) to the closed state, it is detected that the second contact (K2) is not closed, the fault is reported to the locomotive control system (10).

8. The emergency brake control method according to claim 1, characterized in that: The first contact (K1) is controlled by a locomotive control system (10), the state of the emergency brake circuit (20) is detected by the locomotive control system (10), and the locomotive control system (10) is used to send instructions to the brake system (30) and to receive feedback signals from the brake system (30); The second contact (K2) is controlled by the wireless remote control system host (2).

9. An emergency brake control system for a locomotive wireless remote control mode, the emergency brake control system comprising a first contact (K1) connected to an emergency brake circuit (20), a locomotive control system (10), a locomotive wireless remote control system, and a brake system (30); the locomotive wireless remote control system comprising a wireless remote control system host (2) arranged on the locomotive (100), and a wireless remote controller (1) connected to the wireless remote control system host (2) by wireless means; characterized in that: The locomotive wireless remote control system further comprises a second contact (K2), wherein the first contact (K1) and the second contact (K2) are connected in series in an emergency brake circuit (20); The braking system (30) is used to: trigger emergency braking when the emergency braking circuit (20) is in an open state, and cancel emergency braking when the emergency braking circuit (20) is in a closed state; The wireless remote control system host (2) is used to: when the wireless remote control system host (2) and the wireless remote control (1) are in a connected state and the emergency brake operation button of the wireless remote control (1) is in the emergency brake canceling position, the second contact (K2) is in a closed state; when the wireless remote control system host (2) and the wireless remote control (1) are in a disconnected state and the emergency brake operation button (15) is in the emergency brake applying position, the second contact (K2) is opened; The locomotive control system (10) is used to: when detecting that the emergency brake circuit (20) is in an open state, lock the first contact (K1) in an open state, disconnect the first line, and disconnect the second line; when detecting that the wireless remote controller (1) has a key operation corresponding to the emergency brake release and detecting that the second contact (K2) is in a closed state, close the first contact (K1); When it is detected that the emergency brake circuit (20) is in a closed state, both the first circuit and the second circuit are closed; wherein the first circuit is a circuit between a traction converter of the locomotive and a corresponding power supply, and the second circuit is a circuit between an auxiliary converter of the locomotive and a corresponding power supply; Preferably, an indication device (3) is provided on the outside of the locomotive (100); the locomotive control system (10) is further used to: when it is detected that the emergency braking circuit (20) is in a disconnected state or the emergency braking is triggered, set the state of the indication device (3) to a first state; if the first circuit and the second circuit are both in a closed state and the feedback signal of the braking system (30) is a non-emergency braking state, set the state of the indication device (3) to a second state; if any of the following occurs: the first circuit is in an unclosed state, the second circuit is in an unclosed state, and the feedback signal of the braking system (30) is an emergency braking state, set the state of the indication device (3) to a third state; the first state, the second state, and the third state are different states of the indication device (3).

10. A locomotive, characterized in that: The locomotive (100) comprises the emergency brake control system of claim 9.

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