CN113703353A - Redundancy control and redundancy communication method and system applied to train tail equipment - Google Patents
Redundancy control and redundancy communication method and system applied to train tail equipment Download PDFInfo
- Publication number
- CN113703353A CN113703353A CN202110856941.5A CN202110856941A CN113703353A CN 113703353 A CN113703353 A CN 113703353A CN 202110856941 A CN202110856941 A CN 202110856941A CN 113703353 A CN113703353 A CN 113703353A
- Authority
- CN
- China
- Prior art keywords
- communication unit
- state
- control
- main
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 200
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 230000004913 activation Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000004083 survival effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 231100000279 safety data Toxicity 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- -1 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24182—Redundancy
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method and a system for redundant control and redundant communication applied to train tail equipment, which realize the redundant switching of a control unit through a hardware circuit, realize the control unit to seamlessly take over the control right through a multiplexing technology, and protect the main and standby redundant switching of the communication unit through a redundant switching state machine, thereby realizing the hot standby redundant communication unit and the hot standby redundant state of the control unit at any time, and greatly improving the reliability and the usability of the equipment.
Description
Technical Field
The invention relates to the technical field of railway traffic, in particular to a method and a system for redundant control and redundant communication of train tail equipment.
Background
The safety data transmission of the known safety train tail equipment is realized based on a safety communication protocol SUBSET037, and in order to meet practical application, the internal structure of the train tail equipment is divided into a data acquisition unit and a data transmission unit, wherein the data acquisition unit undertakes the safe and reliable acquisition of train integrity data, undertakes the function of an SFM (safety function module) layer, performs the protection and transmission of safety data, and the data transmission unit only realizes the transparent transmission function of the data and undertakes the function of a CFM layer.
In the design of the current data transmission unit, the single-CPU single-communication radio station is adopted for realization, and the single-computer communication can not meet the application requirements of the current safety train tail equipment along with the gradual improvement of the requirements on the reliability and the availability of the system.
The defects of the current single-machine control single-machine communication are as follows:
1) the system is controlled by a single machine, and if the CPU has hardware faults, the system cannot function normally.
2) Only a single station performs communication, and if the station fails, data transmission is interrupted.
Disclosure of Invention
The invention aims to provide a method and a system for redundancy control and redundancy communication applied to column tail equipment, which improve the working reliability and availability of the system through redundancy design.
The purpose of the invention is realized by the following technical scheme:
a method for redundant control and redundant communication applied to column tail equipment comprises the following steps:
the method comprises the steps that a double-path control unit is arranged to realize hot standby redundancy control, the double-path control unit adopts a competition mechanism to determine a main standby state, and the double-path control unit executes switching of the main standby state when the control unit in the main standby state fails in the operation process;
the two-way communication unit is arranged to realize the main and standby redundant communication, and the state control of any control unit in the main state to the two-way communication unit and the seamless control of the main and standby switching are realized through an interface multiplexing technology.
According to the technical scheme provided by the invention, the redundancy switching of the control unit is realized through the hardware circuit, the control unit seamlessly takes over the control right through the multiplexing technology, the main and standby redundancy switching of the communication unit is protected through the redundancy switching state machine, the hot standby redundancy communication unit and the hot standby redundancy state of the control unit can be realized at any time, and the reliability and the usability of the equipment are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are 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 to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram of redundant control and redundant communication applied to a column tail device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a dual-device hot standby arbitration circuit according to an embodiment of the present invention;
FIG. 3 is a timing diagram illustrating operation of the present invention;
fig. 4 is a schematic diagram of a seamless switching control scheme of active/standby states of communication units according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
The following describes a method for redundant control and redundant communication applied to a column tail device according to the present invention in detail. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The instruments used in the examples of the present invention are not indicated by manufacturers, and are all conventional products that can be obtained by commercial purchase.
As shown in fig. 1, a schematic diagram of a method for redundant control and redundant communication applied to a column tail device according to an embodiment of the present invention mainly includes:
the method comprises the steps that a double-path control unit is arranged to realize hot standby redundancy control, the double-path control unit adopts a competition mechanism to determine a main standby state, and the double-path control unit executes switching of the main standby state when the control unit in the main standby state fails in the operation process;
the two-way communication unit is arranged to realize the main and standby redundant communication, and the state control of any control unit in the main state to the two-way communication unit and the seamless control of the main and standby switching are realized through an interface multiplexing technology.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed descriptions are made on the redundancy schemes of the two-way control unit and the two-way communication unit, and the related interface multiplexing technical schemes.
And the first and second control units are used for hot standby redundancy control.
In the embodiment of the present invention, a hardware circuit is introduced to determine the active/standby state, which mainly includes:
1) the output ends of the two-way control unit are respectively connected with one input end of a repeatability monostable trigger in the hardware circuit.
2) After the power-on start, each control unit independently generates the delay of the random number, and outputs corresponding signals after the delay time is reached.
3) The repeatability monostable trigger generates two paths of arbitration output signals after receiving the signals output by the control unit. Wherein, for the control unit corresponding to the first output signal, the arbitration output signal is at low level, the arbitration corresponding control unit is in main state, and the arbitration output signal of the other control unit is at high level and is in standby state; if a signal output by a certain control unit is not received, a fault state is arbitrated. The dual-path control unit comprises a first control unit and a second control unit, and if the output signals of the dual-path control unit simultaneously reach the repeatability monostable trigger, the first control unit is fixedly configured to be in an active state, and certainly, the second control unit can also be fixedly configured to be in an active state.
Fig. 2 is a schematic diagram of a hardware circuit (dual-computer hot standby arbitration circuit) introduced. In the embodiment of the invention, the survival state of the two-way control unit is detected by adopting a heartbeat detection method, so that whether the control unit fails or not is judged; the heartbeat detection method is that the survival state of the heartbeat detection method is propagated outwards within a set time interval, and the survival states of other nodes are detected.
In fig. 2, the first control unit and the second control unit are simply referred to as a machine a and a machine B, and may be specifically implemented by two CPUs. The PTA and PTB are status signals (i.e., signals of a survival status) sent by the a machine and the B machine, respectively, and the PTA and PTB are high when the machines are normal and low when a fault occurs. The Arbitration _ TO _ AJ is an Arbitration output signal corresponding TO the machine A and the machine B, and is guided TO the input pins of the machine A and the machine B; the low level of the output signal of the arbitration is the host, and the high level is the standby machine or the fault machine. The truth table is shown in table 1.
| PTA | PTB | Arbitration_TO_AJ | Arbitration_TO_BJ | ENABLE |
| 0 | 0 | 1 | 1 | 1 |
| 0 | 1 (survival) | 1 | 0 (Main unit) | 0 |
| 1 (survival) | 0 | 0 (Main unit) | 1 | 0 |
| 1 (survival) | 1 (survival) | 0 (Main unit) | 1 | 0 |
TABLE 1 truth table
In the embodiment of the present invention, the output signals of the machine a and the machine B can be set according to requirements, for example, can be set to 10KHz square wave signals. Monitoring is carried out through a repeatability monostable trigger composed of an SE555 precision timer in the figure 2, in order TO ensure that a TO _ orientation _ PIC _ A pin and a TO _ orientation _ PIC _ A pin of the A system host and the B system host are in a reliable high level after being electrified; when the falling edge of the square wave is monitored, a high level is output, and the duration time of the high level is controlled by controlling a resistor and a capacitor connected with the THR pin. The high level is continuously output after the falling edge of the square wave is detected through the final design, when the falling edge disappears, the high level disappears, a gate value circuit is designed through a truth table in a table 1, and the output signal is guaranteed to be a required enabling signal, and as shown in fig. 3, the output signal is a working timing diagram. In the upper part and the lower part of fig. 3, the HeartBeat signal is a square wave signal sent by a single control unit, the processor continuously sends a 10KHz square wave signal after being powered on and working normally, the square wave disappears when a fault occurs, the continuous output is a low level, the HeartBeat output is a corresponding arbitration output signal, the low level is a host, and the high level is a standby machine or a fault machine.
And secondly, the main and standby redundant communication technology of the two-way communication unit.
In the embodiment of the invention, the two-way communication unit comprises a first communication unit and a second communication unit, and the control unit identifies three states of active state, standby state and fault state. After the program is started, the first communication unit is defaulted to be the active communication unit and the second communication unit is the standby communication unit (of course, the second communication unit can also be defaulted to be the active communication unit and the first communication unit is the standby communication unit), and the control unit performs station state detection and communication flow on each communication unit, and the method mainly comprises the following three parts:
1. and (6) judging a fault state.
The communication unit is considered to be faulty if any of the following occurs:
1) after the current communication unit is powered on, the control unit in the main state can periodically send an AT command to detect the state of the control unit, and when the AT command fails to return or is overtime, the current communication unit is judged to be in fault.
Those skilled in the art will appreciate that the AT command set is the control protocol invented by Hayes, the inventor of Dial Modem, for controlling Modem.
2) When the control unit in the main state controls the current communication unit to carry out normal data communication, the control unit needs to carry out TCP connection with the first equipment, and when the TCP connection is interrupted, the current communication unit is judged to be in fault.
2. State control logic.
In the embodiment of the invention, the control is carried out by combining the state of the two-way communication unit according to the set control logic, and the method mainly comprises the following steps:
1) and initializing GSM-R network attachment, PDP activation and PPP dialing flow control for the communication unit in the primary state.
2) Only the initial GSM-R network attachment is performed for the communication unit in standby mode.
3) The communication unit for the failure state is continuously restarted and attempts to initiate GSM-R network attachment.
3. And controlling the seamless switching of the main and standby states of the communication units.
As shown in fig. 4, in order to implement a seamless switching control scheme for the active/standby states of the communication units, the working states of the communication units are detected, and the seamless switching control for the active/standby states of the communication units is performed according to a set control logic. The first communication unit and the second communication unit are abbreviated as a and B in fig. 4, which shows five operation states of the two communication units and the related switching logic.
The five working states mainly comprise: in a first working state, the first communication unit is in a main state, and the second communication unit is in a standby state; in a second working state, the first communication unit is in a fault state, and the second communication unit is in a main state; in a third working state, the first communication unit and the second communication unit are both in a fault state; in a fourth working state, the first communication unit is in a main state, and the second communication unit is in a fault state; in the fifth working state, the first communication unit is in the standby state, and the second communication unit is in the active state.
In fig. 4, the switching logic, as shown by arrows (r) to (r), mainly includes:
as shown by an arrow, when the first working state is in, if the first communication unit is detected to be out of order, the second communication unit is controlled to execute PDP activation and PPP dialing, after the second communication unit is successfully used, the second communication unit enters the main state to carry out normal communication, and at the moment, the second working state is switched to; and as shown by an arrow, if the second communication unit fails to perform the PDP activation and PPP dialing, the operation is switched to the third working state.
If the second communication unit is detected to be in a fault state when the first communication unit is in the first working state, switching to a fourth working state, controlling the second communication unit to restart and try GSM-R network attachment, keeping the state of the first communication unit unchanged, and normally working; if the second communication unit is restarted and the GSM-R network is successfully attached, the first communication unit is switched to the first working state, and the first communication unit is normally operated without changing the state, as shown by the arrow.
Those skilled in the art will appreciate that attempting a GSM-R network attachment, i.e., performing a GSM-R network attachment operation, will subsequently make the relevant state transition depending on whether the attachment was successful.
When the fourth working state is reached, if the first communication unit is detected to be in fault, switching to the third working state; and when the second working state is reached, if the second communication unit is detected to be in a fault state, the third working state is switched to.
When the first communication unit and the second communication unit are in the third working state, the first communication unit and the second communication unit are controlled to be respectively restarted and to try GSM-R network attachment; as shown by arrow, when the first communication unit is restarted first and the GSM-R network is successfully attached, the fourth working state is switched, and the second communication unit is restarted and attempts GSM-R network attachment; and as shown by an arrow, when the second communication unit is restarted first and the GSM-R network is successfully attached, the second working state is switched to, and the first communication unit is restarted and attempts GSM-R network attachment.
And as shown by an arrow ninthly, when the mobile terminal is in the second working state, controlling the first communication unit to restart and try GSM-R network attachment, and if the first communication unit is restarted and the GSM-R network attachment is successful, switching to a fifth working state.
When the first communication unit is detected to be in the first working state, switching to a first working state; as shown by arrow (R), if a failure of the second communication unit is detected, the first communication unit is controlled to execute PDP activation and PPP dialing, after success, the first communication unit enters the active state to perform normal communication, at this time, the state is switched to the fourth working state, the second communication unit is in the failure state, and the GSM-R network attachment is restarted and attempted; if the first communication unit fails to perform the PDP activation and PPP dialing, the first communication unit switches to the third operating state, as indicated by the arrow.
And thirdly, an interface multiplexing technology.
In the embodiment of the invention, the two-way control unit is connected with the two-way communication unit by an interface multiplexing technology, after the control unit in the main state is determined, the bus switch is switched to the control unit interface in the main state, and the control unit in the main state is connected with the two-way communication unit, so that the state control of the two-way communication unit and the seamless control of the main-standby switching can be realized; wherein the seamless control of the main-standby switching comprises: detecting the working state of each communication unit, and performing seamless switching control of the main/standby states of the communication units according to a set control logic (namely, the 1 st and 3 rd points of the second part); the state control of the two-way communication unit includes: and controlling the state of the two-way communication unit according to the set control logic (namely the second part 2 nd point).
Illustratively, the 16-bit FET multiplexer bus switch of SN74CBT16390 may be used to design, and the output signal of the redundancy control unit is used as the control signal of the multiplexing circuit, and the truth table of the multiplexing circuit is shown in table 2.
Table 2 truth table for a multiplex circuit
In table 2, OE1 and OE2 output control signals, a is output, 1B and 2B are input, L is low level, and H is high level.
The redundancy technology applied to the safety train tail equipment ensures that the double-path control unit controls the redundancy of the double-path communication unit, the hot standby redundancy state of the control unit for the redundant communication unit can be achieved at any time, the reliability and the availability of the equipment are greatly improved, and particularly:
1) the hardware circuit controls hot standby redundancy, and when any one control unit fails, the hardware circuit automatically realizes redundancy switching.
2) When any one control unit fails, the other control unit automatically takes over the control right seamlessly, and control over the two communication units is achieved.
3) When any communication unit fails, the state machine ensures the redundancy switching of the communication units.
Another embodiment of the present invention further provides a system for redundant control and redundant communication applied to a train tail device, where the system is implemented based on the method provided in the foregoing embodiment, and referring to fig. 1, the system mainly includes:
the dual-path control unit realizes hot standby redundancy control, adopts a competition mechanism to determine a main standby state, and executes the switching of the main standby state if the control unit in the main standby state fails in the operation process;
the two-way communication unit realizes main and standby redundant communication;
the dual-path control unit and the dual-path communication unit are connected through an interface multiplexing technology, and the state control of the dual-path communication unit and the seamless control of the main-standby switching of any control unit in the main state are realized.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the system is divided into different functional modules to perform all or part of the above described functions.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A method for redundant control and redundant communication applied to column tail equipment is characterized by comprising the following steps:
the method comprises the steps that a double-path control unit is arranged to realize hot standby redundancy control, the double-path control unit adopts a competition mechanism to determine a main standby state, and the double-path control unit executes switching of the main standby state when the control unit in the main standby state fails in the operation process;
the two-way communication unit is arranged to realize the main and standby redundant communication, and the state control of any control unit in the main state to the two-way communication unit and the seamless control of the main and standby switching are realized through an interface multiplexing technology.
2. The method of claim 1, wherein the step of determining the active/standby state and determining whether the control unit fails includes the steps of:
the output ends of the two-way control unit are respectively connected with one input end of a repeatability monostable trigger in the hardware circuit;
after power-on starting, each control unit independently generates time delay of random numbers, and corresponding signals are output after time delay is reached;
the repeatability monostable trigger generates two paths of arbitration output signals after receiving the signals output by the control unit; wherein, for the control unit corresponding to the first output signal, the arbitration output signal is at low level, the arbitration corresponding control unit is in main state, and the arbitration output signal of the other control unit is at high level and is in standby state; if a signal output by a certain control unit is not received, a fault state is arbitrated.
3. The method of claim 1, wherein the two-way control unit comprises a first control unit and a second control unit, and if the output signals of the two-way control unit simultaneously reach the repeatability monostable trigger, the first control unit is fixedly configured to be in an active state.
4. The method according to claim 1, wherein the implementing, by an interface multiplexing technique, seamless switching, state control, and active-standby switching of the two-way communication unit by any control unit comprises:
the two-way control unit is connected with the two-way communication unit through an interface multiplexing technology, after the control unit in the main state is determined, the bus switch is switched to the control unit interface in the main state, the control unit in the main state is connected with the two-way communication unit, and the state control of the two-way communication unit and the seamless control of the main-standby switching can be realized;
wherein the seamless control of the main-standby switching comprises: detecting the working state of each communication unit, and performing seamless switching control on the main and standby states of the communication units according to a set control logic;
the state control of the two-way communication unit includes: and controlling the state of the two-way communication unit according to the set control logic.
5. The method for redundant control and redundant communication applied to train tail equipment according to claim 4, wherein the controlling the state of the two-way communication unit according to the set control logic comprises:
initializing GSM-R network attachment, PDP activation and PPP dialing flow control for the communication unit in the main state;
initializing GSM-R network attachment only for the communication unit in the standby state;
the communication unit for the failure state is continuously restarted and attempts to initiate GSM-R network attachment.
6. The method according to claim 4, wherein the detecting the operating states of the communication units and the controlling the seamless switching between the active and standby states of the communication units according to the set control logic comprise:
the two-way communication unit comprises a first communication unit and a second communication unit, and the working state of the two-way communication unit is divided into five conditions: in a first working state, the first communication unit is in a main state, and the second communication unit is in a standby state; in a second working state, the first communication unit is in a fault state, and the second communication unit is in a main state; in a third working state, the first communication unit and the second communication unit are both in a fault state; in a fourth working state, the first communication unit is in a main state, and the second communication unit is in a fault state; in a fifth working state, the first communication unit is in a standby state, and the second communication unit is in a main state;
when the first communication unit is in the first working state, if the first communication unit is detected to be in failure, the second communication unit is controlled to execute PDP activation and PPP dialing, after the second communication unit is successfully in the main working state, the second communication unit enters the main working state to carry out normal communication, and at the moment, the second communication unit is switched to the second working state; if the second communication unit fails to execute the PDP activation and PPP dialing, switching to a third working state;
when the first working state is reached, if the second communication unit is detected to be in fault, the second communication unit is switched to a fourth working state, the second communication unit is controlled to restart, and GSM-R network attachment is tried; if the second communication unit is restarted and the GSM-R network is successfully attached, switching to a first working state;
when the first communication unit is in the fourth working state, if the first communication unit is detected to be in a fault, switching to the third working state; when the communication unit is in the second working state, if the second communication unit is detected to be in a fault, switching to a third working state;
when the first communication unit and the second communication unit are in the third working state, the first communication unit and the second communication unit are controlled to be respectively restarted and to try GSM-R network attachment; when the first communication unit is restarted and the GSM-R network is successfully attached, switching to a fourth working state; when the second communication unit is restarted and the GSM-R network is successfully attached, switching to a second working state;
when the first communication unit is in the first working state, the first communication unit is controlled to restart and try GSM-R network attachment, and if the first communication unit is restarted and the GSM-R network attachment succeeds, the first communication unit is switched to a first working state;
when the first communication unit is in the fifth working state, if the first communication unit is detected to be in failure, switching to the second working state; if the second communication unit is detected to be in fault, controlling the first communication unit to execute PDP activation and PPP dialing, after the first communication unit is successfully operated, the first communication unit enters a main state to carry out normal communication, and at the moment, the first communication unit is switched to a fourth working state, the second communication unit is in a fault state, and the first communication unit is restarted and attempts GSM-R network attachment; if the first communication unit fails to execute the PDP activation and PPP dialing, switching to a third working state.
7. The method for redundant control and redundant communication of column tail equipment according to claim 5 or 6, wherein the determining mode that the communication unit is in the failure state comprises:
after the current communication unit is powered on, the control unit in the main state can periodically send an AT command to detect the state of the control unit, and when the AT command fails to return or is overtime, the current communication unit is judged to be in fault;
or when the control unit in the active state controls the current communication unit to perform normal data communication, the control unit needs to perform TCP connection with the head-of-line device, and when the TCP connection is interrupted, the current communication unit is judged to be in fault.
8. A system for redundant control and redundant communication applied to train tail equipment, which is realized based on the method of any one of claims 1 to 7, and comprises:
the dual-path control unit realizes hot standby redundancy control, adopts a competition mechanism to determine a main standby state, and executes the switching of the main standby state if the control unit in the main standby state fails in the operation process;
the two-way communication unit realizes main and standby redundant communication;
the dual-path control unit and the dual-path communication unit are connected through an interface multiplexing technology, and the state control of the dual-path communication unit and the seamless control of the main-standby switching of any control unit in the main state are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856941.5A CN113703353A (en) | 2021-07-28 | 2021-07-28 | Redundancy control and redundancy communication method and system applied to train tail equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110856941.5A CN113703353A (en) | 2021-07-28 | 2021-07-28 | Redundancy control and redundancy communication method and system applied to train tail equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113703353A true CN113703353A (en) | 2021-11-26 |
Family
ID=78650724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110856941.5A Pending CN113703353A (en) | 2021-07-28 | 2021-07-28 | Redundancy control and redundancy communication method and system applied to train tail equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113703353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114095799A (en) * | 2022-01-14 | 2022-02-25 | 天津七一二移动通信有限公司 | Method for realizing GSM-R data unit with redundancy switching function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775606A (en) * | 2005-12-19 | 2006-05-24 | 北京交通大学 | Wireless locomotive signal dual-engine warm standby control method |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN101634959A (en) * | 2009-08-21 | 2010-01-27 | 北京航空航天大学 | Dual redundant fault-tolerant system based on embedded type CPU, |
| JP2013011929A (en) * | 2011-06-28 | 2013-01-17 | Alaxala Networks Corp | Communication system and control method for redundant configuration |
| CN103455005A (en) * | 2013-09-06 | 2013-12-18 | 北京四方继保自动化股份有限公司 | Controller redundancy and switching method |
| CN103778092A (en) * | 2014-01-06 | 2014-05-07 | 建荣集成电路科技(珠海)有限公司 | USB and SD interface multiplex circuit and multiplex method |
| CN203658996U (en) * | 2014-01-16 | 2014-06-18 | 青岛海信移动通信技术股份有限公司 | Chip interface multiplex circuit and mobile terminal |
| CN106627665A (en) * | 2016-10-19 | 2017-05-10 | 中国铁道科学研究院通信信号研究所 | Vehicle-mounted earthquake emergency disposal device of redundant GSM-R communication units |
| CN210222744U (en) * | 2019-07-18 | 2020-03-31 | 深圳优地科技有限公司 | Master-slave equipment switching device and terminal equipment based on USB _ OTG mode |
-
2021
- 2021-07-28 CN CN202110856941.5A patent/CN113703353A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775606A (en) * | 2005-12-19 | 2006-05-24 | 北京交通大学 | Wireless locomotive signal dual-engine warm standby control method |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN101634959A (en) * | 2009-08-21 | 2010-01-27 | 北京航空航天大学 | Dual redundant fault-tolerant system based on embedded type CPU, |
| JP2013011929A (en) * | 2011-06-28 | 2013-01-17 | Alaxala Networks Corp | Communication system and control method for redundant configuration |
| CN103455005A (en) * | 2013-09-06 | 2013-12-18 | 北京四方继保自动化股份有限公司 | Controller redundancy and switching method |
| CN103778092A (en) * | 2014-01-06 | 2014-05-07 | 建荣集成电路科技(珠海)有限公司 | USB and SD interface multiplex circuit and multiplex method |
| CN203658996U (en) * | 2014-01-16 | 2014-06-18 | 青岛海信移动通信技术股份有限公司 | Chip interface multiplex circuit and mobile terminal |
| CN106627665A (en) * | 2016-10-19 | 2017-05-10 | 中国铁道科学研究院通信信号研究所 | Vehicle-mounted earthquake emergency disposal device of redundant GSM-R communication units |
| CN210222744U (en) * | 2019-07-18 | 2020-03-31 | 深圳优地科技有限公司 | Master-slave equipment switching device and terminal equipment based on USB _ OTG mode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114095799A (en) * | 2022-01-14 | 2022-02-25 | 天津七一二移动通信有限公司 | Method for realizing GSM-R data unit with redundancy switching function |
| CN114095799B (en) * | 2022-01-14 | 2022-06-21 | 天津七一二移动通信有限公司 | Method for realizing GSM-R data unit with redundancy switching function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101570175B1 (en) | Pcie switch-based server system, switching method and device | |
| CN1874201B (en) | Method and equipment for triggering protection of optical network under shared configuration of receiving devices | |
| CN101488844B (en) | Method and system for communication link switching control between boards and an interface board | |
| CN101714108B (en) | Synchronization control apparatus, information processing apparatus, and synchronization management method | |
| CN101271332A (en) | Compact integrated redundancy controller and control method thereof | |
| US9769041B2 (en) | Method for identifying connection errors of a multiconductor data line | |
| CN105072029A (en) | Redundant link design method and system of active-active storage system | |
| EP3835903B1 (en) | Fault diagnosis system and server | |
| CN113703353A (en) | Redundancy control and redundancy communication method and system applied to train tail equipment | |
| JP2004171370A (en) | Address control system and method between client/server in redundant constitution | |
| EP2784677A1 (en) | Processing apparatus, program and method for logically separating an abnormal device based on abnormality count and a threshold | |
| CN111585835B (en) | Control method and device for out-of-band management system and storage medium | |
| US20160149835A1 (en) | Relay Apparatus | |
| CN111884924B (en) | Redundancy device, redundancy system, and redundancy method | |
| CN101163059B (en) | Network node detection method and apparatus | |
| US9710342B1 (en) | Fault-tolerant mastership arbitration in a multi-master system | |
| JP5176914B2 (en) | Transmission device and system switching method for redundant configuration unit | |
| US20040230875A1 (en) | Failure recovery in a multiprocessor configuration | |
| CN114095462A (en) | Fault tolerance method and system for SRIO communication system of radar processor | |
| JP7188895B2 (en) | Communications system | |
| KR20000040686A (en) | Dual system of lan line | |
| US9787532B2 (en) | Module, system and method of switching modules | |
| KR0152229B1 (en) | Low price duplication node | |
| KR102386978B1 (en) | Apparatus and method for ethernet path failover | |
| JPH11177594A (en) | Communication controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211126 |
|
| RJ01 | Rejection of invention patent application after publication |