CN113859209B - Locomotive brake, single-brake safe control method of single-brake controller and vehicle - Google Patents
Locomotive brake, single-brake safe control method of single-brake controller and vehicle Download PDFInfo
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- CN113859209B CN113859209B CN202111230589.0A CN202111230589A CN113859209B CN 113859209 B CN113859209 B CN 113859209B CN 202111230589 A CN202111230589 A CN 202111230589A CN 113859209 B CN113859209 B CN 113859209B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a locomotive brake, a single-buffer safety control method of an individual brake controller and a vehicle, wherein whether the duration time of a single-buffer command signal of the individual brake controller exceeds the preset time is judged, and if yes, the single-buffer command signal is invalid; otherwise, the single-cache instruction signal is active. When the single-buffer jamming of the single-brake controller fails or the single-buffer command signal acquisition is abnormal, the single-buffer function of the brake can be controlled to be invalid, so that the usability of the brake is improved, and the safe use of the locomotive is guaranteed.
Description
Technical Field
The invention relates to the technical field of rail transit brake control, in particular to a locomotive brake, a single-brake-controller single-brake safe control method and a vehicle.
Background
The single slow function of the locomotive brake is to operate the brake controller, and the brake control system relieves the brake effect generated by the automatic braking of the locomotive. The single-brake controller can trigger single-slow action of the automatic braking action at a single slow position, and the single-slow action can be automatically reset after the single slow action. The brake cylinder pressure of the service brake cannot be recovered after the single slow reset, and the brake cylinder pressure of the emergency brake is allowed to be recovered after the single slow reset. The brake control system comprises a brake control unit, a brake cabinet and a brake controller, wherein the brake control unit acquires position signals of an automatic brake controller and an independent brake controller, and when a common brake instruction, an emergency brake instruction and a single-buffer instruction signal are received at the same time, the brake control unit outputs a single-buffer signal to control a brake cabinet circuit and an air circuit to generate the single-buffer function of the locomotive brake.
In the application process of the locomotive brake, if the single buffer of the single brake controller is blocked or the single buffer is collected by the brake control unit, the brake cylinder pressure can be maintained and relieved for the service brake and the emergency brake, and the locomotive has great potential safety hazard in the state. Therefore, how to reduce the potential safety hazard of locomotive operation caused by the problems of single-buffer clamping stagnation failure and abnormal signal acquisition is a problem to be solved urgently.
CN103112443A discloses a brake control device, which utilizes an independent brake controller to replace an electric vacancy of an air brake valve, the independent brake controller can accurately distinguish four positions of relieving, running, neutral and braking through electric signals, the problem that the relieving position and the running position in the electric vacancy of the air brake valve can not be distinguished is solved, and the accurate control of the slave control locomotive of a heavy-load combined train to effectively follow a master control locomotive is ensured. However, the single brake controller is introduced only from the functional principle, and application safety research aiming at relieving bit jamming or collecting relieving bit faults by the brake controller is not carried out.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the defects of the prior art, the invention provides a locomotive brake, a single-buffer safety control method of an independent brake controller and a vehicle, and potential safety hazards caused by single-buffer clamping stagnation failure or abnormal signal acquisition problems are reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a single-slow safe control method of an independent brake controller of a locomotive brake comprises the following steps:
judging whether the duration of the single-buffer command signal of the single brake controller exceeds the preset time, if so, invalidating the single-buffer command signal; otherwise, the single-buffer instruction signal is active.
According to the invention, the duration time of the single buffer command signal of the single brake controller is compared with the preset time, so that whether the single buffer command signal of the single brake controller is effective or not can be accurately identified, the pressure of the brake cylinder can be conveniently controlled according to the state of the single buffer command signal, and the condition that the pressure of the brake cylinder still maintains a release state when the single buffer is stuck to fail or the single buffer is collected by a brake control unit to cause a problem is prevented, namely the single buffer function of the brake can be controlled to be invalid by the invention, so that the usability of the brake is improved, and the safe use of the locomotive is ensured.
Further, in order to further accurately judge whether the single buffer command signal is valid, when the duration of the single buffer command signal exceeds the preset time and the single buffer is reset, the single buffer command signal is still invalid, the single brake controller is set to be in the single buffer again, the single buffer command signal is re-timed, whether the duration of the re-timed single buffer command signal exceeds the preset time is judged, and if yes, the re-timed single buffer command signal is invalid; otherwise, the retimed single-buffer command signal is asserted.
Further, when the single-buffer command signal is continuously output by the single-brake controller, if the automatic controller outputs a service brake command or an emergency brake command, the service brake command or the emergency brake command is identified. And the safety of the emergency braking single-buffering function and the safety of the common braking single-buffering function are ensured through a priority judging strategy.
Specifically, when the single brake controller continuously outputs the single-buffer command signal, if the automatic controller outputs the emergency brake command, the specific implementation process for identifying the emergency brake command includes:
if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the single-brake controller is received, the single-buffer instruction signal is within a preset time K, and the emergency braking instruction signal is effective, the emergency braking single buffer (the emergency braking position is the position of the automatic braking controller, the single buffer is the position of the single-brake controller, and the emergency braking single buffer function of the brake is formed after the emergency braking position is combined with the single buffer) is available;
if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the single braking controller is received, wherein the single-buffer instruction signal exceeds the preset time K, the single buffer of the emergency braking is unavailable;
If an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the single-brake controller is received, the single-buffer instruction signal is in a preset time K, and the emergency braking instruction signal is not kept, the single buffer of the emergency braking is unavailable;
if the rising edge signal of the emergency braking instruction of the automatic braking controller is received but the single-buffer instruction signal of the single braking controller is not received, the single buffer of the emergency braking is considered to be unavailable;
if the rising edge signal of the emergency braking instruction of the automatic braking controller is not received, the emergency braking is not available.
In the invention, when the emergency braking single buffer is available, an emergency braking single buffer signal is output to control the brake cabinet to execute the emergency braking single buffer; when the emergency braking single buffer is unavailable, if the single buffer command signal is reset, the judgment of the single buffer control logic is carried out again; and if the single-buffer command signal is not reset, the pressure of the brake cylinder is recovered.
Specifically, when the single-brake controller continuously outputs the single-buffer command signal, if the automatic controller outputs the common brake command, the specific implementation process of identifying the common brake command includes:
if a rising edge signal of a common brake instruction of the automatic brake controller is received firstly, then a single-buffer instruction signal of the single-brake controller is received, and the single-buffer instruction signal is in a preset time K, the common brake is available in a single buffer mode;
If a common brake instruction rising edge signal of the automatic brake controller is received firstly, and then a single-buffer instruction signal of the single brake controller is received, and the single-buffer instruction signal exceeds the preset time K, the common brake is unavailable;
if the signal of the rising edge of the common brake instruction of the automatic brake controller is received and the signal of the single-buffer position instruction of the single brake controller is not received, the single buffer of the common brake is considered to be unavailable;
and if the rising edge signal of the service brake command of the automatic brake controller is not received, the service brake is not available slowly.
In the invention, when a service brake single buffer (a service brake position is a position of the automatic brake controller, a single buffer position is a position of the independent brake controller, and the service brake single buffer function of the brake is formed after the service brake position and the single buffer position are combined) is available, a service brake single buffer signal is output, and the brake cabinet is controlled to execute the service brake single buffer; when the service brake single buffer is unavailable, if the single buffer instruction signal is reset, the judgment of the single buffer control logic is carried out again; and if the single slow command signal is not reset, the brake cylinder pressure is kept in the last single slow state.
The invention also provides a locomotive brake, which comprises a brake control unit; the brake control unit is configured or programmed for performing the steps of the inventive method.
As an inventive concept, the invention also provides a rail transit vehicle which adopts the locomotive brake.
Compared with the prior art, the invention has the following beneficial effects: when the single-buffer jamming of the single-brake controller fails or the single-buffer command signal acquisition is abnormal, the single-buffer function of the brake can be controlled to be invalid, so that the usability of the brake is improved, and the safe use of the locomotive is guaranteed.
Drawings
FIG. 1 is a structural diagram of a single-slow safe guiding system of an individual brake controller of a locomotive brake in an embodiment 1 of the invention;
FIG. 2 is a flow chart of a locomotive brake single-slow control logic according to an embodiment 2 of the present invention.
Detailed Description
As shown in FIG. 1, the single-slow safe guiding system of the single-brake controller of the locomotive brake in the embodiment 1 of the invention comprises the single-brake controller, an automatic brake controller, a brake control unit and a brake cabinet.
The individual brake controller is used for a driver operated device which sends individual brake control commands, and the control commands comprise a single buffer bit, a release bit of individual brake action and a brake bit.
An automatic brake controller is a driver-operated device for issuing service brake commands and emergency brake commands.
The brake control unit receives a single-buffer relieving command sent by the single brake controller and a brake area command sent by the automatic brake controller, and outputs brake pressure through calculation.
The brake cabinet is used for installing a brake control unit and an electric and gas path interface for braking.
The brake control unit collects corresponding position instruction signals between the single buffer position of the independent brake controller and the common brake instruction or the emergency brake position of the automatic brake controller, judges whether the single buffer position of the independent brake controller exceeds the preset value time or not, and determines the validity of the single buffer position signals.
In the present invention, the position command signals include a service brake command, an emergency brake command of the automatic brake controller and a single slow command of the individual brake controller. The single-slow brake controller is set to be in the single-slow position within the preset value time, the brake control unit considers that the single-slow command signal is effective, and the single-slow signal is output to control the electric and gas circuit of the brake cabinet, so that the safe single-slow function of the common brake and the emergency brake of the locomotive brake is realized; and if the single-slow bit of the single-brake controller exceeds the preset value time, the single-slow instruction signal is invalid. When the single buffer is reset again, the single buffer instruction signal is timed again, and the brake control unit judges the validity of the single buffer instruction signal again.
The service braking instruction and the emergency braking instruction of the automatic braking controller are prior to the single slow instruction of the single braking controller, namely when the single slow instruction is continuously output by the single braking controller, if the service braking or the emergency braking instruction is output by the automatic controller, the service braking or the emergency braking instruction is identified by the braking control unit.
Fig. 2 is a logic flow chart of locomotive brake single-slow control provided in embodiment 2 of the present invention, and this flow chart may be used to implement locomotive brake safety single-slow control. The method specifically comprises the following steps:
step 1: if a rising edge signal of a service brake instruction of the automatic brake controller is received firstly, and then a single-slow instruction signal of the single-slow brake controller is received, the single-slow instruction signal is considered to be available for service brake in a preset time K (namely the preset time).
Step 2: if a rising edge signal of a service brake instruction of the automatic brake controller is received firstly, and then a single slow instruction signal of the single brake controller is received, the single slow instruction signal exceeds the preset value time K, and the service brake is considered to be unavailable. The preset value time K can be set when the single buffer is blocked or the collection of the brake control unit is invalid, so that the brake cylinder of the brake is prevented from being relieved to influence the application safety of the locomotive due to the single buffer action of the service brake or the emergency brake.
And 3, step 3: if the signal of the common brake command rising edge of the automatic brake controller is received, the single slow command signal of the independent brake controller cannot be received, and the common brake is considered to be unavailable.
And 4, step 4: and if the rising edge signal of the service braking instruction of the automatic braking controller is not received, the service braking is considered to be unavailable slowly.
And 5: when the service brake is available, the service brake single-slow signal is output to control the brake cabinet to execute the service brake single-slow function.
Step 6: when the service brake single buffer is unavailable, if the single buffer command signal is reset, the judgment of the single buffer control logic is carried out again; if the single slow command signal is not reset, the brake cylinder pressure is kept in the last single slow state, and when automatic braking is added or applied again, the single slow brake cannot be controlled to relieve the pressure of the brake cylinder of the service brake, and the brake cylinder pressure is kept at the pressure during automatic braking control.
And 7: if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the independent braking controller is received, the single-buffer signal is within a preset value time K, and the emergency braking instruction signal is effective, and the single-buffer emergency braking is considered to be available.
And step 8: if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single slow instruction signal of the single braking controller is received, the single slow instruction signal exceeds a preset value for time K, and the emergency braking single slow is considered to be unavailable.
And step 9: if the rising edge signal of the emergency braking instruction of the automatic braking controller is received firstly, and then the single slow instruction signal of the single braking controller is received, the single slow instruction signal is within the preset value time K, but the emergency braking instruction signal is not kept, and the single slow of the emergency braking is considered to be unavailable.
Step 10: if the rising edge signal of the emergency braking instruction of the automatic braking controller is received, but the single slow instruction signal of the single braking controller is not received, the single slow of the emergency braking is considered to be unavailable.
Step 11: and if the rising edge signal of the emergency braking instruction of the automatic braking controller is not received, the emergency braking is considered to be unavailable slowly.
Step 12: when the emergency brake is available, the emergency brake signal is output to control the brake cabinet to perform the emergency brake function.
Step 13: when the emergency braking single buffer is unavailable, if the single buffer command signal is reset, the judgment of the single buffer control logic is carried out again; if the single slow command signal is not reset, the pressure of the brake cylinder is recovered, and the single slow brake can not be controlled to relieve the pressure of the emergency brake cylinder.
Claims (7)
1. A single slow safety control method for an independent brake controller of a locomotive brake is characterized by comprising the following single slow control logics:
judging whether the duration time of the single-buffer instruction signal of the single-brake controller exceeds the preset time, if so, invalidating the single-buffer instruction signal; otherwise, the single-cache instruction signal is valid;
when the single-buffer command signal is continuously output by the single brake controller, if the automatic controller outputs a common brake command or an emergency brake command, the common brake command or the emergency brake command is identified;
when the single-buffer command signal is continuously output by the single brake controller, if the automatic controller outputs an emergency brake command, the specific implementation process for identifying the emergency brake command comprises the following steps:
if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the independent braking controller is received, the single-buffer instruction signal is within a preset time K, and the emergency braking instruction signal is effective, the single buffer of the emergency braking is available;
if an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the single braking controller is received, wherein the single-buffer instruction signal exceeds the preset time K, the single buffer of the emergency braking is unavailable;
If an emergency braking instruction rising edge signal of the automatic braking controller is received firstly, and then a single-buffer instruction signal of the single braking controller is received, the single-buffer instruction signal is in a preset time K, and the emergency braking instruction signal is not kept, the single buffer of the emergency braking is unavailable;
if the rising edge signal of the emergency braking instruction of the automatic braking controller is received but the single-buffer instruction signal of the single braking controller is not received, the single buffer of the emergency braking is considered to be unavailable;
if the rising edge signal of the emergency braking instruction of the automatic braking controller is not received, the emergency braking is not available slowly.
2. The method of claim 1, wherein when the duration of the single-buffer command signal exceeds a preset time and the single buffer is reset, the single-buffer command signal is still invalid, the single-buffer controller is reset again, the single-buffer command signal is re-timed, whether the duration of the re-timed single-buffer command signal exceeds the preset time is judged, and if yes, the re-timed single-buffer command signal is invalid; otherwise, the retimed single-buffer command signal is asserted.
3. The method for controlling the single slow safety of the locomotive brake single brake controller according to claim 1, wherein when the emergency brake single slow is available, the emergency brake single slow signal is output to control the brake cabinet to execute the emergency brake single slow; when the emergency braking single buffer is unavailable, if the single buffer command signal is reset, the judgment of the single buffer control logic is carried out again; and if the single buffer command signal is not reset, the pressure of the brake cylinder is recovered.
4. The method as claimed in claim 1, wherein when the single-buffer command signal is continuously output from the single-buffer brake controller, if the automatic controller outputs the service brake command, the specific implementation process for identifying the service brake command includes:
if a rising edge signal of a common brake instruction of the automatic brake controller is received firstly, then a single-buffer instruction signal of the single-brake controller is received, and the single-buffer instruction signal is in a preset time K, the common brake is available in a single buffer mode;
if a rising edge signal of a common brake instruction of the automatic brake controller is received firstly, and then a single-buffer instruction signal of the single-brake controller is received, wherein the single-buffer instruction signal exceeds the preset time K, the single buffer of the common brake is unavailable;
If the signal of the rising edge of the common brake instruction of the automatic brake controller is received and the signal of the single-buffer position instruction of the single brake controller is not received, the single buffer of the common brake is considered to be unavailable;
and if the rising edge signal of the service brake command of the automatic brake controller is not received, the service brake is not available slowly.
5. The method for controlling the single buffer safety of the locomotive brake single brake controller according to claim 4, wherein when the service brake single buffer is available, a service brake single buffer signal is output to control the brake cabinet to execute the service brake single buffer; when the service brake single buffer is unavailable, if the single buffer instruction signal is reset, the judgment of the single buffer control logic is carried out again; if the single slow command signal is not reset, the brake cylinder pressure is kept in the last single slow state.
6. A locomotive brake includes a brake control unit; characterized in that the brake control unit is configured or programmed for carrying out the steps of the method according to one of claims 1 to 5.
7. A rail transit vehicle employing the locomotive brake of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230589.0A CN113859209B (en) | 2021-10-22 | 2021-10-22 | Locomotive brake, single-brake safe control method of single-brake controller and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230589.0A CN113859209B (en) | 2021-10-22 | 2021-10-22 | Locomotive brake, single-brake safe control method of single-brake controller and vehicle |
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| Publication Number | Publication Date |
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| CN113859209A CN113859209A (en) | 2021-12-31 |
| CN113859209B true CN113859209B (en) | 2022-06-14 |
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| CN202111230589.0A Active CN113859209B (en) | 2021-10-22 | 2021-10-22 | Locomotive brake, single-brake safe control method of single-brake controller and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8190311B2 (en) * | 2008-03-05 | 2012-05-29 | General Electric Company | Adaptive brake scheme during a locomotive distributed power communication loss |
| US20160304067A1 (en) * | 2015-04-16 | 2016-10-20 | Electro-Motive Diesel, Inc. | Braking systems and methods for automatic train operation |
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| CN101049832A (en) * | 2007-05-23 | 2007-10-10 | 中国南车集团株洲电力机车有限公司 | Method and equipment for controlling electronic braking controller |
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