CN216734244U - Emergency braking hard wire control device and system - Google Patents
Emergency braking hard wire control device and system Download PDFInfo
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- CN216734244U CN216734244U CN202220103527.7U CN202220103527U CN216734244U CN 216734244 U CN216734244 U CN 216734244U CN 202220103527 U CN202220103527 U CN 202220103527U CN 216734244 U CN216734244 U CN 216734244U
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Abstract
The utility model provides an emergency brake hard wire control device and a system, wherein the device comprises: NOR gate, OR gate and AND gate; the NOR gate is connected with the external emergency train line and used for receiving the first input signal and the second input signal which are subjected to redundancy processing from the external emergency train line and outputting a hard-line control signal; the OR gate is connected with the NOR gate, the AND gate and the external electro-pneumatic controller and is used for receiving the electro-pneumatic control signal from the external electro-pneumatic controller, processing the electro-pneumatic control signal and the hard-wire control signal and outputting a processing result; and the AND gate is connected with the external anti-skid controller and is used for receiving the anti-skid control signal from the external anti-skid controller, processing the anti-skid control signal and the processing result and outputting a valve control signal. On the basis of not changing a gas circuit control mode and an electrical framework, the utility model adopts an AND-OR logic gate, realizes that an emergency hard wire signal directly controls the electro-pneumatic valve, does not pass through an MCU and software any more, and greatly improves the safety level of emergency braking.
Description
Technical Field
The utility model relates to the technical field of rail transit, in particular to an emergency braking hard wire control device and system.
Background
In rail transit, particularly urban rail transit and urban/inter-city rail transit braking systems, the rack control system is increasingly widely used. The bogie control system generally adopts digital/analog electro-pneumatic braking, integrates functions of service braking, emergency braking, antiskid control, braking management and the like into one unit, the unit is installed nearby a bogie, and the bogie is used as a unit to perform braking control on each bogie.
The principle of the Pneumatic Brake Control Unit (PBCU) of the conventional frame control system is basically the same, namely the functions of service braking, emergency braking, antiskid control and the like are realized by sharing a group of the Pneumatic Brake Control Units (PBCU). On the basis of the safety level, how to realize the safety level of the single-train emergency brake control function SL3 is difficult to realize the safety level of the train-level emergency brake control function SL 4. At present, the emergency brake control function of a frame control dynamic system can be realized only by software in an EBCU, so that the problem that the emergency brake cannot be applied due to software failure or MCU (single chip microcomputer) crash exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the embodiments of the present invention mainly aim to provide an emergency brake hard-line control device and system, which realize that an emergency hard-line signal directly controls an electro-pneumatic valve without passing through an MCU and software, thereby improving the safety level of emergency braking.
In order to achieve the above object, an embodiment of the present invention provides an emergency brake hard-wire control device, including: NOR gate, OR gate and AND gate;
the NOR gate is connected with an external emergency train line and used for receiving the first input signal and the second input signal which are subjected to redundancy processing from the external emergency train line and outputting a hard-line control signal;
the OR gate is connected with the NOR gate, the AND gate and the external electro-pneumatic controller and is used for receiving an electro-pneumatic control signal from the external electro-pneumatic controller, processing the electro-pneumatic control signal and the hard-wire control signal and outputting a processing result;
and the AND gate is connected with the external anti-skid controller and is used for receiving the anti-skid control signal from the external anti-skid controller, processing the anti-skid control signal and the processing result and outputting a valve control signal.
Optionally, in an embodiment of the present invention, the or gate includes a first or gate, and the first or gate is connected to the nor gate and the external electro-pneumatic controller, and is configured to receive an electro-pneumatic holding valve control signal from the external electro-pneumatic controller, perform logic processing on the electro-pneumatic holding valve control signal and the hard-wired control signal, and output a first logic processing signal.
Optionally, in an embodiment of the present invention, the or gate further includes a second or gate, where the second or gate is connected to the nor gate and the external electric air controller, and is configured to receive an electric air exhaust valve control signal from the external electric air controller, perform logic processing on the electric air exhaust valve control signal and the hard wire control signal, and output a second logic processing signal.
Optionally, in an embodiment of the present invention, the and gate includes a first and gate, and the first and gate is connected to the first or gate and the external antiskid controller, and is configured to receive an antiskid holding valve control signal from the external antiskid controller, perform logic processing on the antiskid holding valve control signal and the first logic processing signal, and output a holding valve control signal.
Optionally, in an embodiment of the present invention, the and gate further includes a second and gate, where the second and gate is connected to the second or gate and the external anti-skid controller, and is configured to receive an anti-skid exhaust valve control signal from the external anti-skid controller, perform logic processing on the anti-skid exhaust valve control signal and the second logic processing signal, and output an exhaust valve control signal.
Optionally, in an embodiment of the present invention, the apparatus further includes a driving chip, where the driving chip is connected to the first and second and gates, and is configured to receive and process the holding valve control signal and the exhaust valve control signal, and output a valve control instruction.
Optionally, in an embodiment of the present invention, a driving chip is connected to the external holding valve, and the driving chip is configured to send a holding valve control command in the valve control commands to the external holding valve.
Optionally, in an embodiment of the present invention, a driving chip is connected to the external exhaust valve, and the driving chip is configured to send an exhaust valve control command in the valve control command to the external exhaust valve.
Optionally, in an embodiment of the present invention, the apparatus further includes a power module, where the power module is connected to the driving chip and is configured to input a voltage signal to the driving chip.
The embodiment of the utility model also provides an emergency braking hard-line control system, which comprises an electric pneumatic controller, an antiskid controller and the emergency braking hard-line control device; wherein, the emergency brake hard wire control device is connected with an external emergency train line, an external holding valve and an external exhaust valve.
On the basis of not changing the air circuit control mode and the electrical framework, the utility model adopts the AND or NOR logic gate, realizes that the emergency hard wire signal directly controls the electro-pneumatic valve, does not pass through the MCU and software, and greatly improves the safety level of emergency braking.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an emergency brake hard-wire control device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an emergency brake hard-wire control system according to an embodiment of the present invention.
Detailed Description
The embodiment of the utility model provides an emergency braking hard wire control device and system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an emergency brake hard-wire control device according to an embodiment of the present invention, where the device includes: nor gate 1, or gates (or gates 21 and 22), and gates (and gates 31 and 32);
the NOR gate 1 is connected with an external emergency train line and used for receiving a first input signal and a second input signal which are subjected to redundant processing from the external emergency train line and outputting a hard-line control signal;
the OR gate and the NOR gate 1, the AND gate and the external electric air controller are connected and used for receiving the electric air control signal from the external electric air controller, processing the electric air control signal and the hard wire control signal and outputting a processing result;
and the AND gate is connected with the external anti-skid controller and is used for receiving the anti-skid control signal from the external anti-skid controller, processing the anti-skid control signal processing result and outputting a valve control signal.
Wherein EBI1 and EBI 2: under the EB working condition, an emergency instruction input signal comes from an emergency train line on the vehicle; EBC: under the EB working condition, a hard wire signal is input in an emergency control mode, and belongs to an intermediate variable; EPC _ HVC 1: a control signal of the holding valve under an EP (electric-air) control working condition is 1, namely, the holding valve is kept electrified, and 0, namely, the holding valve is de-electrified; EPC _ RVC 1: in an exhaust valve control signal under an EP (electric air) control working condition, 1 is equal to keeping power, and 0 is equal to losing power of a keeping valve; EPEB _ HVC 1: a process variable; EPEB _ RVC 1: a process variable; WSP _ HVC 1: keeping a control signal of the valve under a WSP (anti-skid) control working condition, wherein 1 is to keep the valve electrified, and 0 is to lose the electricity of the valve; WSP _ RVC 1: under the control working condition of a WSP (anti-skid) valve, 1 is equal to keeping the valve electrified, and 0 is equal to keeping the valve unpowered; HVC 1: the final output control signal of the holding valve, 1, keeping the holding valve electrified, and 0, losing the holding valve electrified; RVC 1: the final output control signal of the exhaust valve, 1, makes the keeping electrified, and 0, makes the keeping valve deenergized.
Further, the operation executed by the valve control command is as shown in table 1.
TABLE 1
| HV | RV | |
| Inflation | 0 | 0 |
| |
1 | 0 |
| Exhaust of |
1 | 1 |
Furthermore, the device receives signals EB + and EB-of an emergency loop train line from a vehicle, and divides the signals into two redundant input circuits after redundant processing to obtain two input signals EBI1 and EBI 2. And the EBI1 and EBI2 signals are processed by a NOR gate to obtain an EBC emergency control signal.
Further, the EBC emergency control signal is processed or processed with a control signal of the holding valve and the exhaust valve sent by the MCU controlled by the EP, and the signal after the logic processing is processed and processed with a control signal of the holding valve and the exhaust valve sent by the MCU controlled by the WSP, so that the control signal of the holding valve and the exhaust valve is finally obtained. Therefore, the logic sequential control of three functions of EP control, WSP control, hard wire control under emergency working conditions and the like is realized.
In one embodiment of the present invention, the holding valve is taken as an example:
under the emergency braking condition: when the emergency loop is powered off, the EBI1 and the EBI2 are at low level (0), the EBC is at high level (1), and the truth table is shown in Table 2.
TABLE 2
Under the working condition of service braking: the emergency loop is powered on, EBI1 and EBI2 are high (1), EBC is low (0), and the truth table is shown in table 3.
TABLE 3
On the basis of not changing the air circuit control mode and the electrical framework, the utility model adopts the AND or NOR logic gate, realizes that the emergency hard wire signal directly controls the electro-pneumatic valve, does not pass through the MCU and software, and greatly improves the safety level of emergency braking.
As an embodiment of the present invention, the or gate includes a first or gate 21, and the first or gate 21 is connected to the nor gate 1 and the external electro-pneumatic controller, and is configured to receive the electro-pneumatic holding valve control signal from the external electro-pneumatic controller, perform logic processing on the electro-pneumatic holding valve control signal and the hard-wired control signal, and output a first logic processing signal.
In this embodiment, the or gate further includes a second or gate 22, and the second or gate 22 is connected to the nor gate 1 and the external electric air controller, and is configured to receive the electric air exhaust valve control signal from the external electric air controller, perform logic processing on the electric air exhaust valve control signal and the hard-wire control signal, and output a second logic processing signal.
In this embodiment, the and gate includes a first and gate 31, and the first and gate 31 is connected to the first or gate 21 and the external antiskid controller, and is configured to receive the antiskid maintaining valve control signal from the external antiskid controller, logically process the antiskid maintaining valve control signal and the first logic processing signal, and output the maintaining valve control signal.
In this embodiment, the and gate further includes a second and gate 32, and the second and gate is connected to the second or gate 22 of the and gate 32 and the external antiskid controller, and is configured to receive the antiskid exhaust valve control signal from the external antiskid controller, perform logic processing on the antiskid exhaust valve control signal and the second logic processing signal, and output the exhaust valve control signal.
In this embodiment, the apparatus further includes a driving chip, which is connected to the first and gate 31 and the second and gate 32, and is configured to receive and process the holding valve control signal and the exhaust valve control signal, and output a valve control command.
In this embodiment, the driving chip is connected to the external holding valve, and the driving chip is configured to send a holding valve control command of the valve control commands to the external holding valve.
In this embodiment, the driving chip is connected with the external exhaust valve, and the driving chip is used for sending the exhaust valve control command in the valve control command to the external exhaust valve.
In this embodiment, the apparatus further includes a power module, connected to the driving chip, for inputting a voltage signal, i.e., the low voltage signal P0V shown in fig. 1, to the driving chip.
The specific working process of the device provided by the utility model is as follows: the emergency command input signal obtained from the emergency train line is processed redundantly to obtain two signals, namely a first input signal EBI1 and a second input signal EBI 2. And performing not or processing on the first input signal and the second input signal, namely inputting the first input signal and the second input signal into a not or gate for processing to obtain a hard wire control signal (EBC).
Further, an electric air control signal is obtained from an electric air controller (electric air MCU), and an antiskid control signal is obtained from an antiskid controller (antiskid MCU). Specifically, the electric air control signal comprises an electric air holding valve control signal (EPC _ HVC1) and an electric air exhaust valve control signal (EPC _ RVC1), and the antiskid control signal comprises an antiskid holding valve control signal (WSP _ HVC1) and an antiskid exhaust valve control signal (WSP _ RVC 1).
Further, the electric air hold valve control signal and the hard-wire control signal are subjected to or processing, specifically, the electric air hold valve control signal and the hard-wire control signal are input to the first or gate processing, and a first processing result (EPEB _ HVC1) is obtained. Meanwhile, the electric air exhaust valve control signal and the hard wire control signal are subjected to or processing, specifically, the electric air exhaust valve control signal and the hard wire control signal are input to a second or gate for processing, and a second processing result (EPEB _ RVC1) is obtained.
Further, the first processing result and the anti-skid holding valve control signal are processed in an AND mode, specifically, the anti-skid holding valve control signal and the first processing result are input into the first AND gate to be processed, and the holding valve control signal is obtained (HVC 1). And processing the second processing result and the antiskid exhaust valve control signal, specifically, inputting the antiskid exhaust valve control signal and the second processing result into a second AND gate for processing to obtain an exhaust valve control signal (RVC 1).
The holding valve control signal and the holding valve control signal are input into the driving chip to obtain a valve control command, and the valve control command comprises a holding valve control command (HV) and an exhaust valve control command (RV).
On the basis of the existing widely used rack control mode, on the basis of not changing the gas circuit control mode and the electric framework, the utility model adopts a NAND logic gate mode to realize that the emergency hard wire signal directly controls the electric pneumatic valve without the MCU and software, thereby greatly improving the safety level of emergency braking. Meanwhile, the functions of common braking, antiskid control and the like are not influenced. If the MCU responsible for the control of the service brake is halted, the emergency brake can still be applied and the anti-skid function is still provided during the emergency brake; if the MCU responsible for antiskid control crashes, the low-level service brake can still be applied to stop the vehicle, and the emergency brake can also be applied in special emergency situations. The main advantages are that: the control mode of the existing main flow frame control brake is not changed; the electric idle change valve is directly controlled by an emergency braking hard line; the system security level is improved.
Fig. 2 is a schematic structural diagram of an emergency brake hard-wire control system according to an embodiment of the present invention, where the system includes: the electro-pneumatic controller 100, the anti-skid controller 200 and the emergency brake hard-wire control device 300; wherein, the emergency brake hard-line control device is connected with an external emergency train line, an external holding valve and an external exhaust valve.
Based on the same application concept as the emergency brake hard-wire control device, the utility model also provides the emergency brake hard-wire control system. Because the principle of solving the problems of the emergency brake hard-wire control system is similar to that of an emergency brake hard-wire control device, the implementation of the emergency brake hard-wire control system can refer to the implementation of the emergency brake hard-wire control device, and repeated parts are not described again.
On the basis of not changing the air circuit control mode and the electrical framework, the utility model adopts the AND or NOR logic gate, realizes that the emergency hard wire signal directly controls the electro-pneumatic valve, does not pass through the MCU and software, and greatly improves the safety level of emergency braking.
The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An emergency brake hard-line control apparatus, the apparatus comprising: NOR gate, OR gate and AND gate;
the NOR gate is connected with an external emergency train line and used for receiving the first input signal and the second input signal which are subjected to redundancy processing from the external emergency train line and outputting a hard-line control signal;
the OR gate is connected with the NOR gate, the AND gate and the external electro-pneumatic controller and is used for receiving an electro-pneumatic control signal from the external electro-pneumatic controller, processing the electro-pneumatic control signal and the hard-wire control signal and outputting a processing result;
and the AND gate is connected with an external anti-skid controller and is used for receiving an anti-skid control signal from the external anti-skid controller, processing the anti-skid control signal and the processing result and outputting a valve control signal.
2. The apparatus of claim 1, wherein the or gate comprises a first or gate, the first or gate is connected to the not gate and an external electro-pneumatic controller, and is configured to receive an electro-pneumatic hold valve control signal from the external electro-pneumatic controller, logically process the electro-pneumatic hold valve control signal and the hard-wired control signal, and output a first logically processed signal.
3. The apparatus of claim 2, wherein the or gate further comprises a second or gate, the second or gate is connected to the nor gate and an external electric air controller, and is configured to receive an electric air exhaust valve control signal from the external electric air controller, perform logic processing on the electric air exhaust valve control signal and the hard-wired control signal, and output a second logic processing signal.
4. The apparatus of claim 3, wherein the AND gate comprises a first AND gate, the first AND gate is connected to the first OR gate and an external antiskid controller, and is configured to receive an antiskid holding valve control signal from the external antiskid controller, logically process the antiskid holding valve control signal and the first logic processing signal, and output a holding valve control signal.
5. The device of claim 4, wherein the AND gate further comprises a second AND gate, the second AND gate is connected to the second OR gate and an external antiskid controller, and is configured to receive an antiskid exhaust valve control signal from the external antiskid controller, logically process the antiskid exhaust valve control signal and the second logically processed signal, and output an exhaust valve control signal.
6. The device of claim 5, further comprising a driving chip, wherein the driving chip is connected to the first and second AND gates, and is configured to receive and process the holding valve control signal and the exhaust valve control signal, and output a valve control command.
7. The device of claim 6, wherein the driver chip is connected to an external holding valve, and the driver chip is configured to send a holding valve control command of the valve control commands to the external holding valve.
8. The device of claim 6, wherein the driver chip is connected to an external exhaust valve, and the driver chip is configured to send an exhaust valve control command of the valve control commands to the external exhaust valve.
9. The device of claim 6, further comprising a power module connected to the driving chip for inputting a voltage signal to the driving chip.
10. An emergency brake hard-line control system, characterized in that the system comprises an electro-pneumatic controller, an anti-skid controller and an emergency brake hard-line control device according to any one of claims 1 to 9; wherein, the emergency brake hard wire control device is connected with an external emergency train line, an external holding valve and an external exhaust valve.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114475553A (en) * | 2022-01-14 | 2022-05-13 | 中国铁道科学研究院集团有限公司 | Emergency brake hard wire control method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114475553A (en) * | 2022-01-14 | 2022-05-13 | 中国铁道科学研究院集团有限公司 | Emergency brake hard wire control method and system |
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