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

Abstract

The application provides an emergency brake control method and system for a locomotive wireless remote control mode and a locomotive. The emergency brake control method comprises the following steps: if a wireless remote control system host and a wireless remote controller are in a connected state, and an emergency brake operation button of the wireless remote controller is in an emergency brake cancel position, then the second contact is in a closed state; otherwise, the second contact is disconnected; when it is detected that an emergency brake circuit is in a disconnected state, the first contact is locked in a disconnected state, the first line is disconnected, the second line is disconnected, and an emergency brake is triggered; when it is detected that the wireless remote controller has a key operation corresponding to the emergency brake release, and it is detected that the second contact is in a closed state, the first contact is closed; when it is detected that the emergency brake circuit is in a connected state, the first line and the second line are both closed, and the emergency brake is released.

Description

Technical Field

[0001] The present 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 release indication and control in a locomotive in a 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 triggering device corresponds to a corresponding contact in the emergency brake circuit. When any emergency brake condition is triggered, the corresponding emergency brake triggering device disconnects the corresponding contact in the emergency brake circuit, thereby disconnecting the emergency brake circuit and causing the brake system to apply emergency brakes. In the emergency brake circuit, at least one contact (such as Figure 1 The opening and closing of the first contact (K1) shown is controlled by the locomotive control system 10. For example, when the driver needs to apply emergency braking, they simply press the emergency brake button, which opens the corresponding contact S1. This de-energizes the first control coil LM1 and the second control coil LM2 in the emergency brake circuit 20, disconnecting the lines between the locomotive's traction converter and the corresponding power supply, as well as the lines between the locomotive's auxiliary converter and the corresponding power supply, thereby disconnecting power to the locomotive's traction system and auxiliary systems. Simultaneously, upon detecting that the emergency brake button has been pressed, the locomotive control system 10 initiates an emergency braking operation.

[0003] In 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 activated in wireless remote control mode, the driver can only operate the emergency brake button outside the locomotive by using the wireless remote control.

[0004] If you use the following in wireless remote control mode: Figure 1The emergency brake system shown, the locomotive control system 10 receives the signal of the wireless remote control by 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 of the traction converter, the auxiliary converter and the power supply of the locomotive is disconnected, and the brake system is executed to perform emergency braking; if it is detected that the emergency brake operation button returns to the original position (i.e. back to the unpressed state), the locomotive control system is instructed to perform emergency brake release operation, cancel the emergency brake, that is, the brake system no longer performs emergency brake operation. However, the driver may misoperate the wireless remote control button during operation, causing the emergency brake operation button of the wireless remote control to return to the original position from the pressed state, so that the locomotive control system 10 receives the wrong indication signal, resulting in emergency brake release, causing safety problems. SUMMARY

[0005] The problem to be solved by the present application is that the driver may misoperate the wireless remote control button during emergency brake operation, causing the emergency brake operation button of the wireless remote control to return to the original position from the pressed state, so that the locomotive control system 10 receives the wrong indication signal, resulting in emergency brake release. A method for controlling emergency braking in wireless remote control mode of a locomotive is provided.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is: a method for controlling emergency braking in wireless remote control mode of a locomotive, the locomotive (100) having an emergency brake circuit (20), a first contact (K1) connected in the emergency brake circuit (20), a locomotive wireless remote control system, the locomotive wireless remote control system including a wireless remote control system host (2) provided on the locomotive (100), and a wireless remote control (1) connected to the wireless remote control system host (2) by wireless means;

[0007] The locomotive wireless remote control system further 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);

[0008] When the locomotive (100) is in wireless remote control mode, the emergency brake control method comprises:

[0009] 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 cancel position, the second contact (K2) is in a closed state; otherwise, the second contact (K2) is disconnected;

[0010] When the emergency braking circuit (20) is detected to be in the open state, the first contact (K1) is locked in the open state, the first line is disconnected, the second line is disconnected, and the emergency braking is triggered; when the wireless remote controller (1) is detected to have a key operation corresponding to the emergency braking release, and the second contact (K2) is detected to be in the closed state, the first contact (K1) is closed; when the emergency braking circuit (20) is detected to be in the closed state, the first line and the second line are both closed, and the emergency braking is released.

[0011] 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.

[0012] 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 braking operation button is in the emergency braking application position, the second contact connected in the emergency braking circuit is disconnected, so that the emergency braking circuit is in the open state, thereby disconnecting the first line and the second line, and triggering the emergency braking. The applicant found during research that when the emergency braking 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 the emergency braking operation button is pressed by mistake, the second contact that is closed again can make the emergency braking circuit closed again, so that the emergency braking is released, which can cause safety problems. The applicant found during research that as long as the emergency braking circuit is detected to be disconnected, it means that the event causing the emergency braking occurs, and the event causing the emergency braking causes a contact in the emergency braking circuit to be disconnected. In the present application, as long as the emergency braking circuit is detected to be in the open state, the first contact is locked in the open state, and the emergency braking circuit cannot be closed by the reopening of the disconnected contact corresponding to the emergency braking event. The first contact can only be closed when the wireless remote controller has a key operation corresponding to the emergency braking release and the second contact is closed. If the first contact and the second contact are closed, and no other contact in the emergency braking circuit is disconnected (i.e. no other emergency braking event occurs or other emergency braking events have been resolved), the emergency braking circuit can be closed, thereby ensuring the safety of the locomotive when the emergency braking occurs.

[0013] In the above technical solution, an indicator device (3) is provided on the outside of the locomotive (100); when it is detected that the emergency brake circuit (20) is in an open 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 open state, the second circuit is in an open 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).

[0014] The applicant discovered that in 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 process of emergency braking, if the driver misjudges the status of the locomotive, there is a great 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 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 status of the locomotive through the indicator device located on the outside of the locomotive, which makes it easier for the driver to perform subsequent operations according to the status of the locomotive and reduce the risk of misjudgment.

[0015] In the above technical solution, the wireless remote controller (1) has a traction / brake selection button (11) and a remote controller unlocking button (12);

[0016] If the traction / brake selection button (11) is detected to be in the brake application position and the remote controller unlock button (12) is detected to be in the unlock position, it is detected that the wireless remote controller (1) has a button operation corresponding to emergency brake release.

[0017] According to the above solution, the second contact can be closed only when the driver operates the wireless remote controller so as to perform a key operation corresponding to the release of the emergency brake.

[0018] With 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 prevent erroneous operation caused by the driver accidentally touching the remote control.

[0019] In the above technical solution, when all the contacts connected in the emergency braking circuit (20) are in a closed state, the emergency braking circuit (20) is in a closed state; otherwise, the emergency braking circuit (20) is in an open state.

[0020] According to the above scheme, all the contacts that cause emergency braking are connected in the emergency braking circuit, and the emergency braking circuit is opened as soon as any contact is opened, thereby triggering emergency braking.

[0021] In the above technical solution, after triggering emergency braking, when the pressure in the brake cylinder of the locomotive (100) is in a set emergency braking pressure interval, the feedback signal of the braking system (30) is in an emergency braking state.

[0022] In the above technical solution, the indicating device (3) is an indicating lamp; when the indicating lamp is in a first state, the indicating lamp is in a constant-on state; when the indicating lamp is in a second state, the indicating lamp is in an off state; and when the indicating lamp is in a third state, the indicating lamp is in a flashing state.

[0023] According to the above scheme, the driver located outside the vehicle can easily understand the different states of the vehicle according to the different states of the indicating lamp.

[0024] In the above technical solution, after the emergency braking is cancelled, the braking system (30) executes the maximum normal braking instruction stored before triggering emergency braking.

[0025] According to the above scheme, after the emergency braking is cancelled, the locomotive is in a maximum normal braking state. In the present application, the normal braking is a non-emergency braking state.

[0026] In the above technical solution, if it is detected that the second contact (K2) is not closed after the operation of making the second contact (K2) in a closed state, a fault is reported to the locomotive control system (10).

[0027] In the above technical solution, the first contact (K1) is controlled by the locomotive control system (10), the state of the emergency braking circuit (20) is detected by the locomotive control system (10), the locomotive control system (10) is used to send an instruction to the braking system (30) and to receive a feedback signal of the braking system (30). The second contact (K2) is controlled by the wireless remote control system host (2).

[0028] According to the same inventive concept, the application further 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 comprises a first contact (K1) connected in 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 comprises a wireless remote control system host (2) arranged on a locomotive (100) and a wireless remote controller (1) wirelessly connected to the wireless remote control system host (2).

[0029] The locomotive wireless remote control system further comprises a second contact (K2), and the first contact (K1) and the second contact (K2) are connected in series in the emergency brake circuit (20).

[0030] The brake system (30) is configured to trigger an emergency brake when the emergency brake circuit (20) is in an open state, and cancel the emergency brake when the emergency brake circuit (20) is in a closed state.

[0031] The wireless remote control system host (2) is configured to: when the wireless remote control system host (2) and the wireless remote controller (1) are in a connected state and an emergency brake operation button of the wireless remote controller (1) is in an emergency brake cancel position, make the second contact (K2) in a closed state; and when the wireless remote control system host (2) and the wireless remote controller (1) are in an unconnected state, or any one of the emergency brake operation button (15) being in an emergency brake application position occurs, make the second contact (K2) open.

[0032] The locomotive control system (10) is configured 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, open a first line, and open a second line; when it is detected that the wireless remote controller (1) has a key operation corresponding to emergency brake release, and it is detected that the second contact (K2) is in a closed state, make the first contact (K1) closed; and when it is detected that the emergency brake circuit (20) is in a closed state, make the first line and the second line both closed. 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.

[0033] In the preferred technical solution, the locomotive (100) is externally provided with an indicating device (3); the locomotive control system (10) is further configured to: when detecting that the emergency braking circuit (20) is in an open state, or when the emergency braking is triggered, set the state of the indicating device (3) to a first state; if the first line and the second line are both in a closed state, and the feedback signal of the braking system (30) is in a non-emergency braking state, set the state of the indicating device (3) to a second state; if any of the following conditions occurs: the first line is in an unclosed state, the second line is in an unclosed state, and the feedback signal of the braking system (30) is in an emergency braking state, set 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).

[0034] According to the above-mentioned scheme, as long as the connection between the wireless remote control system host and the wireless remote controller is disconnected, or the emergency braking operation button is pressed, the second contact connected in the emergency braking circuit is disconnected, so that the emergency braking circuit is in an open state, thereby disconnecting the first line and the second line, and triggering the emergency braking. The applicant found during research that when the wireless remote control system host and the wireless remote controller are connected without the emergency braking operation button being pressed, the second contact is closed. If the second contact is re-closed when an emergency situation occurs, the emergency braking circuit will be re-closed, and the emergency braking will be cancelled, which will cause safety problems. The applicant found during research that as long as the emergency braking circuit is detected to be disconnected, it means that an event causing emergency braking occurs, which causes a contact in the emergency braking circuit to be disconnected. In the present application, as long as the emergency braking circuit is detected to be in an open state, the first contact is locked in an open state, and the emergency braking circuit cannot be closed by the re-closure of the disconnected contact corresponding to the emergency braking event. The first contact must be closed when the wireless remote controller has a key operation corresponding to the emergency braking release and the second contact is closed. If the first contact and the second contact are closed, and no other contact in the emergency braking circuit is disconnected (i.e. no other emergency braking event occurs or other emergency braking events have been resolved), the emergency braking circuit can be closed, thereby ensuring the safety of the locomotive when the emergency braking occurs. Since the indicating device is in different first state, second state, and third state in different states, the driver can understand the state of the locomotive through the indicating device located on the outside of the locomotive, and the driver can perform subsequent operations according to the state of the locomotive. According to the same inventive concept, the present application also provides a locomotive, which comprises the above-mentioned emergency braking control system.

[0035] The application has the advantages and positive effects that the application can be applied in the key emergency braking and emergency braking relief system of the locomotive system adopting the RRC mode, the system has fast response, good stability and reliability, and is convenient for the driver to operate and observe, and the emergency braking application and emergency braking relief operation can be safely, simply and efficiently completed without observing the display device in the cab. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 is a connection structure schematic diagram of the locomotive control system, the braking system and the emergency braking circuit in the prior art emergency braking control system;

[0038] Figure 2 is a connection structure schematic diagram of the emergency braking control system in the embodiment of the present application.

[0039] Figure 3 is a structure schematic diagram of the connection of the locomotive power supply and the traction motor and the auxiliary load in the embodiment of the present application.

[0040] Figure 4 is a structure schematic diagram of the keys and buttons on the wireless remote controller in the embodiment of the present application;

[0041] Figure 5 is a flow chart of the emergency braking control method in the embodiment of the present application.

[0042] In the above drawings:

[0043] main circuit breaker H1; first contact K1; second contact K2; signal system control contact KA;

[0044] 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 braking operation button;

[0045] traction / braking selection key 11; remote controller unlocking key 12; emergency braking operation button 15; indicating device 3; first base 11A; second base 12A; third base 15A;

[0046] Locomotive 100; Locomotive control system 10; Emergency braking circuit 20; Braking system 30; Locomotive power supply 40; Traction converter 41, Traction motor 51; Auxiliary converter 42; Auxiliary load 52;

[0047] First control coil LM1; Second control coil LM2; First control contact KM1; Second control contact KM2; Power supply terminal VCC. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. EMBODIMENT

[0049] The embodiment provides an emergency braking control method for a locomotive wireless remote control mode.

[0050] As shown in Figure 2 , the locomotive 100 has an emergency braking circuit 20, a first contact K1 connected in the emergency braking circuit 20, 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 with the wireless remote control system host 2 in a wireless manner. The locomotive wireless remote control system further comprises a second contact K2, and the first contact K1 and the second contact K2 are connected in series in the emergency braking circuit 20.

[0051] As shown in Figure 5 , when the locomotive 100 is in the wireless remote control mode, the emergency braking control method comprises:

[0052] If the wireless remote control system host 2 and the wireless remote controller 1 are in a connected state, and the emergency braking operation button 15 of the wireless remote controller 1 is located at an emergency braking cancel position (i.e. the emergency braking operation button 15 is returned to the position and is in an unpressed state), the second contact K2 is in a closed state; otherwise, the second contact K2 is disconnected;

[0053] When it is detected that the emergency braking circuit 20 is in a disconnected state, the first contact K1 is locked in a disconnected state, the first line is disconnected, the second line is disconnected, and the emergency braking is triggered; when it is detected that the wireless remote controller 1 has a key operation corresponding to the emergency braking release, and it is detected that the second contact K2 is in a closed state, the first contact K1 is closed; when it is detected that the emergency braking circuit 20 is in a closed state, the first line and the second line are both closed, and the emergency braking is released;

[0054] The first line is a line between the traction converter of the locomotive and the corresponding power supply, and the second line is a line between the auxiliary converter of the locomotive and the corresponding power supply.

[0055] like Figure 2 、 Figure 3 As shown, the first control contact KM1 corresponds to the first control coil LM1, and the second control contact KM2 corresponds to the second control coil LM2. When the emergency brake circuit 20 is closed (i.e., the line between VCC and GND is connected, meaning all coils connected in series with the first contact on the emergency brake circuit 20 are energized), both the first control coil LM1 and the second control coil LM2 are energized, and both the first control contact KM1 and the second control contact KM2 are closed. When the emergency brake circuit 20 is open (i.e., any contact in the line between VCC and GND is disconnected, causing the line between VCC and GND to be disconnected, meaning all coils connected in series with the first contact on the emergency brake circuit 20 are de-energized), both the first control coil LM1 and the second control coil LM2 are de-energized, and both the first control contact KM1 and the second control contact KM2 are open.

[0056] like Figure 2 As shown, the emergency brake circuit 20 is also equipped with a signaling system control contact KA. When other conditions that trigger an emergency brake (such as locomotive overspeed) are detected, the locomotive's signaling system (not shown) disconnects the signaling 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, it locks the first contact K1 into the open state.

[0057] Figure 2 In the embodiment, if any one contact (ie, switch) in the emergency brake circuit 20 is in an open state, the emergency brake circuit is in an open state; if all contacts in the emergency brake circuit are in a closed state, the emergency brake circuit 20 is in a closed state.

[0058] 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, air conditioning system, etc.

[0059] 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 an internal power supply of the locomotive (such as a battery).

[0060] When the main circuit breaker H1 and the first control contact KM1 are both in the closed state, the first line is in the closed state. When either of the main circuit breaker H1 and the first control contact KM1 is in the open state, the first line is in the open state.

[0061] When the main circuit breaker H1 and the second control contact KM2 are both in the closed state, the second line is in the closed state. When either of the main circuit breaker H1 and the second control contact KM2 is in the open state, the second line is in the open state.

[0062] In the embodiment, the control coil corresponding to the main circuit breaker H1 can also be connected in series in the emergency braking circuit. Of course, the first control contact KM1 and the second control contact KM1 can also not be provided, i.e., the first line and the second line are controlled according to the on-off of the main circuit breaker H1.

[0063] The locomotive 100 is externally provided with an indicating device 3. The indicating device 3 can be optionally provided on the wireless remote controller 1, as shown in Figure 4 .

[0064] When it is detected that the emergency braking circuit 20 is in the open state or the emergency braking is triggered, the state of the indicating device 3 is the first state; if the first line and the second line are both in the closed state and the feedback signal of the braking system 30 is in the non-emergency braking state, the state of the indicating device 3 is the second state; if any of the following conditions occurs, i.e., the first line is in the unclosed state, the second line is in the unclosed state, and the feedback signal of the braking system 30 is in the emergency braking state, the state of the indicating device 3 is the third state; the first state, the second state, and the third state are different states of the indicating device 3.

[0065] In the embodiment, the indicating device 3 is an indicating lamp; when the indicating lamp is in the first state, the indicating lamp is in the always-on state; when the indicating lamp is in the second state, the indicating lamp is in the off state; and when the indicating lamp is in the third state, the indicating lamp is in the flashing state.

[0066] As shown in Figure 4 , the wireless remote controller 1 has a traction / braking selection button 11, a remote controller unlocking button 12, and an emergency braking operation button 15.

[0067] The emergency braking operation button 15 can be located in an emergency braking application position (the button is pressed) or an emergency braking cancellation position (the button is reset, i.e., the button is in the unpressed state).

[0068] If it is detected that the traction / braking selection button 11 is located in the braking application position and it is detected that the remote controller unlocking button 12 is located in the unlocking position, it is detected that the wireless remote controller 1 has a button operation corresponding to the emergency braking release.

[0069] The emergency braking circuit 20 is in a closed state when all the contacts connected in the emergency braking circuit 20 are in a closed state; otherwise, the emergency braking circuit 20 is in an open state. A relay coil (for example, a first control coil LM1; a second control coil LM2) in series with the first contact can be provided in the emergency braking circuit. Two electrical connection terminals of the emergency braking circuit can be electrically connected with a power supply terminal VCC and a ground terminal GND, respectively.

[0070] The feedback signal of the braking system 30 is in an emergency braking state when the pressure in the brake cylinder of the locomotive 100 is in a set emergency braking pressure range.

[0071] After the emergency braking is cancelled, the braking system 30 executes the maximum normal braking instruction stored before the emergency braking is triggered. That is, before the emergency braking is executed, the maximum value of the normal braking instruction (i.e., a non-emergency braking instruction) once executed by the braking system 30 is stored. After the emergency braking is cancelled, the braking system 30 executes the maximum normal braking instruction.

[0072] If it is detected that the second contact K2 is not closed after the operation of making the second contact K2 closed, a fault is reported to the locomotive control system 10.

[0073] The first contact K1 is controlled by the locomotive control system 10, the state of the emergency braking circuit 20 is detected by the locomotive control system 10, the locomotive control system 10 is configured to send an instruction to the braking system 30 and configured to receive a feedback signal of the braking system 30; and the second contact K2 is controlled by the wireless remote control system host 2.

[0074] According to the same inventive concept, the application further provides an emergency braking control system for a wireless remote control mode of a locomotive, which comprises a first contact K1 connected in an emergency braking circuit 20, a locomotive control system 10, a wireless remote control system of the locomotive, and a braking system 30. The wireless remote control system of the locomotive comprises a wireless remote control system host 2 arranged on the locomotive 100 and a wireless remote controller 1 wirelessly connected with the wireless remote control system host 2. The wireless remote control system of the locomotive further comprises a second contact K2, and the first contact K1 and the second contact K2 are connected in series in the emergency braking circuit 20.

[0075] The braking system 30 is configured to trigger emergency braking when the emergency braking circuit 20 is in an open state, and cancel the emergency braking (i.e., the braking system 30 no longer executes the emergency braking) when the emergency braking circuit 20 is in a closed state.

[0076] The wireless remote control system host 2 is configured to: when the wireless remote control system host 2 and the wireless remote controller 1 are in a connected state, and the emergency brake operation button of the wireless remote controller 1 is in the emergency brake cancel position, the second contact K2 is closed; when the wireless remote control system host 2 and the wireless remote controller 1 are in an unconnected state, and any one of the following conditions occurs, the second contact K2 is opened: the emergency brake operation button 15 is in the emergency brake application position.

[0077] The locomotive control system 10 is configured to: when detecting that the emergency brake circuit 20 is in an open state, the first contact K1 is locked in an open state, the first line is opened, and the second line is opened; 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, the first contact K1 is closed; when detecting that the emergency brake circuit 20 is in a closed state, the first line and the second line are both closed; 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.

[0078] Preferably, the locomotive 100 is externally provided with an indication device 3; the locomotive control system 10 is further configured to: when detecting that the emergency brake circuit 20 is in an open state, or the emergency brake is triggered, the state of the indication device 3 is in a first state; if the first line and the second line are both in a closed state, and the feedback signal of the brake system 30 is in a non-emergency brake state, the state of the indication device 3 is in a second state; if any one of the following conditions occurs: the first line is in an unclosed state, the second line is in an unclosed state, and the feedback signal of the brake system 30 is in an emergency brake state, the state of the indication device 3 is in a third state; the first state, the second state, and the third state are different states of the indication device 3.

[0079] According to the same inventive concept, the present application also provides a locomotive, the locomotive 100 comprising the above emergency brake control system.

[0080] As Figure 4As shown in the figure, on the wireless remote controller 1, the traction / brake selection button 11, the remote controller unlocking 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 the embodiment, the buttons can be flat tendons. The selectable positions of the traction / brake selection button 11 include a brake holding position and a brake application position. An applied force can make the traction / brake selection button 11 reach the brake application position, and when no force is applied, the traction / brake selection button 11 resets back to the brake holding position. The selectable positions of the remote controller unlocking button 12 include an unlocking position and a zero position. An applied force can make the remote controller unlocking button 12 reach the unlocking position, and when no force is applied, the remote controller unlocking button 12 resets back to the zero position. The selectable positions of the emergency brake operation button 15 include a brake application position and an emergency brake cancellation position. The selectable positions of the emergency brake operation button 15 include an emergency brake application position (button pressed) and an emergency brake cancellation position (button pulled up).

[0081] The embodiment of the application is described in detail below.

[0082] The application relates to the control strategy of an indicator light in an emergency brake application and release process in a wireless remote control mode (hereinafter referred to as an RRC mode) of a locomotive, the safety control strategy after emergency brake application in the RRC mode of the locomotive, the emergency brake release control strategy in the RRC mode of the locomotive, and the control strategy of a main circuit of the locomotive in the emergency brake application and release process in the RRC mode of the locomotive.

[0083] The system architecture of the application comprises a locomotive control system 10 (i.e., a network control system of the locomotive, hereinafter referred to as a TCMS system) and a wireless remote control system. The application also relates to the judgment and safety interlocking of the software and hardware of a locomotive brake system, realizes the functions of emergency brake application and emergency brake safety release of the locomotive, and can ensure that a driver can clearly know the effectiveness of relevant operations through an indicator light when the driver is outside the cab.

[0084] (1) Emergency brake application process in the RRC mode

[0085] As Figure 5As 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 the wireless remote control system host 2 receives the emergency command signal, it 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 receives the emergency brake command signal through the hardware IO port and immediately executes the hardware emergency brake command. At this time, the locomotive control system 10 immediately transmits a normal brake signal with a duration of T1 seconds to the brake system through the network after monitoring that the emergency brake circuit 20 is cut off (this signal will be stored by the brake system as the locomotive brake state before emergency braking). Here, the brake force (or brake force percentage) is proportional to the duration of the transmitted signal, so the sending time T1, i.e., the corresponding proportional brake force, is the brake force executed by the brake system after the emergency brake is released. 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 in the open state. When the brake system is vented to the specified emergency brake pressure range of the brake system, the brake system sends an emergency brake state feedback signal to the TCMS system. After the TCMS system receives the emergency brake state feedback signal fed back by the brake system, the TCMS system drives the indicator light circuit and changes the state of the indicator light from the running 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 state of the indicator light outside the locomotive.

[0086] (2) Emergency brake release process in RRC mode

[0087] When the driver needs to release the emergency braking (i.e. cancel the emergency braking instruction), the driver can pull the emergency braking operation button 15 of the wireless remote controller 1, and then the wireless remote control system host 2 receives the signal and cancels the emergency instruction. At this time, after the driver operates the wireless remote controller 1 to release the emergency braking (i.e. the traction / braking selection button 11 is in the braking application position, and the remote controller unlocking button 12 is in the unlocking position), the wireless remote control system host 2 receives the valid emergency braking release command, and after determining that all the contacts in series in the emergency braking circuit 20 have been closed, it will send the network command of emergency braking release to the TCMS system. After the TCMS system receives the command of the driver's request to release the emergency braking from the RRC system, it will first unlock the lock of the disconnection state of the emergency braking circuit 20, and close the first contact K1 in the emergency braking circuit 20 controlled by the locomotive control system. At this time, after the braking system monitors that the emergency braking circuit 20 is successfully rebuilt, it will immediately execute the maximum normal braking command stored by the TCMS system before the emergency braking, i.e. the locomotive braking will be converted from emergency braking to maximum normal braking. After the TCMS system confirms that the entire emergency braking circuit 20 is not cut off (i.e. all the series contacts are closed), it will send a braking holding signal to the braking system. At the same time, the command signal of closing the main circuit breaker (also known as HSCB) is sent, and the main circuit of the locomotive (i.e. the traction circuit including the traction motor and the traction converter) and the auxiliary circuit of the locomotive (i.e. the circuit including the auxiliary load and the auxiliary converter) are restarted. After the braking system completes the state transition, it will send a signal to the locomotive TCMS system to cancel the state of the emergency braking. After the locomotive TCMS system receives the signal, and when the lines between the traction converter and the locomotive power supply and the lines between the auxiliary converter and the locomotive power supply are successfully closed, the main circuit of the locomotive and the auxiliary circuit of the locomotive are successfully restarted, the state of the indication device is driven to display the state of the RRC system in normal operation, i.e. the emergency braking release is successful. If the main circuit of the locomotive and the auxiliary circuit of the locomotive cannot be started successfully, the locomotive TCMS system will drive the indication lamp to display the state of the locomotive fault, and tell the driver that the locomotive has a fault, which can be checked by the driver.

[0088] (3) Emergency braking and release process of non-driver operation in RRC mode

[0089] The working condition is that the key protection system in the other emergency braking circuit 20 of the locomotive in the RRC mode triggers the emergency braking through the emergency braking circuit 20, and the passive protection inside the locomotive is provided, that is, the emergency source is other systems on the emergency braking circuit 20 inside the locomotive. For example, when the speed of the locomotive exceeds the set speed threshold, the signal system makes the signal system control contact KA disconnected. The braking application process is compared with the emergency braking operated by the driver, and the link of receiving the signal of the wireless remote control system host is omitted. For the emergency braking, before the relief, the driver needs to judge whether the emergency source is cancelled after the emergency braking according to the vehicle state and experience, that is, whether the contact on the emergency braking circuit 20 that triggers the emergency braking is closed, and after the driver eliminates the emergency source, the relief process does not need to pull out the emergency braking operation button 15 (the driver does not press it in advance, so it does not need to be pulled up again), and the rest is the same as the relief process of the emergency braking of the RRC system operated by the driver.

[0090] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0091] The above describes the embodiments of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the implementation of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the scope of the present application. After reading the present application, the skilled in the art can modify various equivalent forms of the present application, which fall within the scope defined by the claims attached to the present application. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

Claims

1. An emergency brake control method for a locomotive in a wireless remote control mode, wherein the locomotive (100) comprises 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 comprises 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 method is 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 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 in a connected state and the emergency brake operation button (15) of the wireless remote controller (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 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 canceled; The first line is a line between the traction converter of the locomotive and the corresponding power supply, and the second line is a line between the auxiliary converter of the locomotive and the corresponding power supply.

2. The emergency brake control method according to claim 1, characterized in that: The locomotive (100) is provided with an indicator 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 the 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 the 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 the third state; the first state, the second state, and the third state are different states of the indicating device (3).

3. The emergency brake control method according to claim 2, characterized in that: The indicating device (3) is an indicator light; when the indicator light is in the first state, the indicator light is in a constantly on state; when the indicator light is in the second state, the indicator light is in an off state; and when the indicator light is in the third state, the indicator light is in a flashing state.

4. 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 the emergency brake release.

5. 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.

6. 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 an emergency brake state.

7. 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.

8. 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).

9. 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).

10. An emergency brake control system for a locomotive in a 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) disposed on the locomotive (100), and a wireless remote controller (1) wirelessly connected to the wireless remote control system host (2); 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 controller (1) are in a connected state and the emergency brake operation button of the wireless remote controller (1) is in the emergency brake cancel position, the second contact (K2) is closed; when the wireless remote control system host (2) and the wireless remote controller (1) are in an unconnected state and the emergency brake operation button (15) is in the emergency brake application 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 circuit, and disconnect the second circuit; when detecting that a key operation corresponding to the release of the emergency brake is performed on the wireless remote controller (1) and detecting that the second contact (K2) is in a closed state, close the first contact (K1); When the emergency brake circuit (20) is detected to be in a closed state, both the first circuit and the second circuit are closed; wherein the first circuit is a circuit between the traction converter of the locomotive and the corresponding power supply, and the second circuit is a circuit between the auxiliary converter of the locomotive and the corresponding power supply.

11. The emergency brake control system according to claim 10, characterized in that: The locomotive (100) is provided with an indicator device (3) on the outside; the locomotive control system (10) is further used for: when it is detected that the emergency brake circuit (20) is in an open state or the emergency brake is triggered, setting 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, setting the state of the indicator device (3) 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 brake system (30) is an emergency brake state, and the emergency brake circuit (20) is in a closed state, setting 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).

12. A locomotive, characterized in that: The locomotive (100) comprises the emergency brake control system of claim 10 or 11.

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