CN207020479U - A kind of self-regulating machine redundancy switching system - Google Patents
A kind of self-regulating machine redundancy switching system Download PDFInfo
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- CN207020479U CN207020479U CN201720720718.7U CN201720720718U CN207020479U CN 207020479 U CN207020479 U CN 207020479U CN 201720720718 U CN201720720718 U CN 201720720718U CN 207020479 U CN207020479 U CN 207020479U
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Abstract
It the utility model is related to a kind of self-regulating machine redundancy switching system, switch for the redundancy of self-regulating machine A systems and self-regulating machine B systems, described switching system includes the switching circuit board connected respectively with self-regulating machine A systems and self-regulating machine B systems, the switching circuit board includes the CPLD main control chips and relay being connected with each other, described CPLD main control chips connect with self-regulating machine A systems and self-regulating machine B systems respectively, and described relay connects with self-regulating machine A systems and self-regulating machine B systems respectively.Compared with prior art, the utility model is by the special switching circuit board based on CPLD chips, as the basic foundation of A, B system active-standby switch, when A systems or B systems break down, switching circuit board judges rapidly according to the switch logic of itself, the advantages that substantially increasing switching efficiency.
Description
Technical field
A kind of track traffic signal Centralized Dispatching System is the utility model is related to, is used for track traffic more particularly, to one kind
The self-regulating machine redundancy switching system of signal dispatching central system.
Background technology
In track traffic signal Centralized Dispatching System, the two-node cluster hot backup of nucleus equipment self-regulating machine work be system it is long-term,
The basis of reliability service.Traditional self-regulating machine two-node cluster hot backup redundancy handover scheme, is in communication with each other with self-regulating machine A, B systems, exchanges work
Make basic implementation of the state as switching.Self-regulating machine A, B systems are in communication with each other by serial ports or network, by handoff technique,
Judge that A systems or B systems are main frame.When main frame breaks down, standby host by with main-machine communication, according to handoff technique, automatically become
Main frame, realize the function of switch between master and slave machines.
Demand in practical application is examined, as follows the shortcomings that this handover scheme：
1st, once communication is interrupted between standby machine, then standby machine does not know the working condition of other side, can only be simultaneously
It is main or simultaneously not based on, cause double main or double standby situations to produce.
2nd, the application of redundancy handover scheme, the peripheral hardware to be communicated with self-regulating machine is limited to, if the peripheral hardware to be communicated with self-regulating machine
And double systems are set fortunately, A, B system and A, B system with peripheral hardware that can make self-regulating machine are respectively connected with.But if lead to self-regulating machine
The peripheral hardware of letter only has an interface, such as shunting monitoring equipment, then be difficult to make the single face of peripheral hardware with self-regulating machine A, B machine simultaneously
Connection.
3rd, the judgement of standby machine, can only be judged according to the switching method being previously set, field maintenance person is difficult to root
It is artificial arbitrarily to set standby machine according to on-site actual situations, it is unfavorable for debugging and the fault diagnosis of field apparatus.
Utility model content
The purpose of this utility model is exactly superfluous in order to provide a kind of self-regulating machine the defects of overcoming above-mentioned prior art to exist
Remaining switching system.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of self-regulating machine redundancy switching system, switch for the redundancy of self-regulating machine A systems and self-regulating machine B systems, described switching
System includes the switching circuit board connected respectively with self-regulating machine A systems and self-regulating machine B systems, and the switching circuit board includes mutually interconnecting
The CPLD main control chips and relay connect, described CPLD main control chips connect with self-regulating machine A systems and self-regulating machine B systems respectively, institute
The relay stated connects with self-regulating machine A systems and self-regulating machine B systems respectively.
Relay in described switching circuit board is provided with DB25 interfaces and DB9 interfaces, described DB25 interfaces point
Do not connected with self-regulating machine A systems and self-regulating machine B systems, described DB9 interfaces are connected with external equipment；
When self-regulating machine A systems are main frame, the serial ports of self-regulating machine A systems by the DB9 interfaces of switching circuit plate with it is outside
Equipment carries out serial communication；When self-regulating machine B systems are main frame, the serial ports of self-regulating machine B systems is connect by the DB9 of switching circuit plate
Mouth is communicated with external equipment.
Described DB25 interfaces are provided with two, and described DB9 interfaces are provided with four tunnels.
The switching switch being connected with CPLD main control chips is provided with described switching circuit board.
Described self-regulating machine A systems and self-regulating machine B systems is in communication with each other by 232 serial ports of switching circuit board.
Compared with prior art, the utility model has advantages below：
1st, communication disruption causes that the abnormal failure ratio of switching is more, and the utility model is by cutting between A, B system in the prior art
232 serial ports of circuit board are changed, dedicated for being communicated between A, B system, the communication port of self-regulating machine A, B systems is added, improves A, B system
Between communication reliability, further ensure the stability that self-regulating machine A, B systems are in communication with each other.
2nd, the active-standby switch mechanism between A, B system in the prior art, standby machine is carried out mainly by the switch logic of A, B system itself
Judgement, when A, B system communication disruption, A, B system are required to the regular hour to confirm the state of other side, and switch speed is slow, and hold
Easily cause double main, double bad phenomenons such as standby.The utility model by the special switching circuit board based on CPLD chips, as A,
The basic foundation of B systems active-standby switch, when A systems or B systems break down, switching circuit board, can be with according to the switch logic of itself
Judge rapidly, and send switching signal, be main frame by A systems or B systems.
3rd, the utility model switching circuit plate carries the 4 road DB9 serial port with external device communication.It can realize that A, B system set
The standby monosystem equipment simultaneously with outside carries out serial communication, and realizes the redundancy of A, B system and external equipment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is part of the embodiment of the present utility model, rather than is all implemented
Example.Based on the embodiment in the utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment obtained, it should all belong to the scope of the utility model protection.
As shown in figure 1, a kind of self-regulating machine redundancy switching system, switches for the redundancy of self-regulating machine A systems and self-regulating machine B systems,
Described switching system includes the switching circuit board connected respectively with self-regulating machine A systems and self-regulating machine B systems, the switching circuit board
CPLD main control chips 1 and relay 2 including interconnection, described CPLD main control chips 1 respectively with self-regulating machine A systems and self-discipline
Machine B systems connect, and described relay 2 connects with self-regulating machine A systems and self-regulating machine B systems respectively.
Relay in described switching circuit board is provided with DB25 interfaces and DB9 interfaces, described DB25 interfaces point
Do not connected with self-regulating machine A systems and self-regulating machine B systems, described DB9 interfaces are connected with external equipment；
The utility model main feature is as follows：
Self-regulating machine A, B systems can not only be communicated by network, and can be carried out serial ports by switching circuit plate and be led to
Letter.
Self-regulating machine A, B systems not only by network and serial communication, to judge standby machine, and need to send out to switching circuit plate
Send activestandby state information and heartbeat message.
The activestandby state information and heartbeat message that switching circuit plate can be sent according to self-regulating machine A, B systems, judge standby machine,
And send active and standby ruling information to self-regulating machine A, B systems.
Switching circuit plate carries 2 DB25 interfaces and 4 DB9 interfaces, most 4 serial ports of self-regulating machine A, B systems, can be with
By DB25 interfaces, switching circuit plate is respectively connected to.4 DB9 interfaces of switching circuit plate are connected with external equipment.
When self-regulating machine A systems are main frame, most 4 serial ports of self-regulating machine A systems, can be connect by switching circuit plate through 4 DB9
Mouth is communicatively coupled with peripheral hardware serial communication interface 3；When self-regulating machine B systems are main frame, most 4 serial ports of self-regulating machine B systems,
It can be communicatively coupled by switching circuit plate by 4 DB9 interfaces with peripheral hardware serial communication interface 3.
Switching circuit plate carry switching switch, can taking human as the self-regulating machine A machines that set be main frame, sentence automatically as main frame, B machines
Disconnected three kinds of states.
The basic functional principle of the program is as follows：
Self-regulating machine A, B systems are in communication with each other by 232 serial ports of switching circuit plate, and independently determine the transmission of A, B system robs main letter
Breath.
Self-regulating machine A, B systems pass through 232 serial ports, are sent to switching circuit plate and rob main signal.
Main signal is robbed to be collectively constituted by RTS signals and TX signals.When RTS signals are high level, and TX signals are in 1 second
When having voltage change (heartbeat signal), it is effective that switching circuit plate just thinks that this is that self-regulating machine robs main signal；Otherwise, switching circuit plate
It is invalid to think to rob main signal.
Switching circuit plate robs main signal according to what self-regulating machine A, B systems sent, judges simultaneously ruling standby machine, and passes through 232 strings
Mouth sends cts signal to self-regulating machine A, B systems, and notice self-regulating machine A, B systems are main frame or standby host.Switching circuit plate to self-regulating machine A,
The cts signal that B systems send is identical value, and when CTS is high level, A machines are main frame, when CTS is low level, based on B machines
Machine.
The 4 road serial ports (COMA1-4 and COMB1-4) of self-regulating machine A, B systems, are connected respectively on switching circuit plate, and pass through
4 road serial ports (COMC1-4) of switching circuit plate are connected with external equipment.When switching circuit plate ruling self-regulating machine A systems are main frame, then
By controlling the relay of switching circuit intralamellar part, COMA1-4 is set to be connected with COMC1-4；When the ruling of switching circuit plate is restrained oneself
Machine B systems are main frame, then by controlling the relay of switching circuit intralamellar part, COMB1-4 is connected with COMC1-4.So as to realize
Self-regulating machine A, B systems and the communication hot-backup function of external equipment single face.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in various in the technical scope that the utility model discloses
Equivalent modifications or substitutions, these modifications or substitutions should all cover within the scope of protection of the utility model.Therefore, this practicality
New protection domain should be defined by scope of the claims.
Claims (5)
1. a kind of self-regulating machine redundancy switching system, switch for the redundancy of self-regulating machine A systems and self-regulating machine B systems, it is characterised in that institute
The switching system stated includes the switching circuit board connected respectively with self-regulating machine A systems and self-regulating machine B systems, the switching circuit board bag
Include the CPLD main control chips and relay of interconnection, described CPLD main control chips respectively with self-regulating machine A systems and self-regulating machine B systems
Connection, described relay connect with self-regulating machine A systems and self-regulating machine B systems respectively.
A kind of 2. self-regulating machine redundancy switching system according to claim 1, it is characterised in that described switching circuit board
In relay be provided with DB25 interfaces and DB9 interfaces, described DB25 interfaces connect with self-regulating machine A systems and self-regulating machine B systems respectively
Connect, described DB9 interfaces are connected with external equipment；
When self-regulating machine A systems are main frame, DB9 interfaces and external equipment that the serial ports of self-regulating machine A systems passes through switching circuit plate
Carry out serial communication；When self-regulating machine B systems are main frame, the serial ports of self-regulating machine B systems by the DB9 interfaces of switching circuit plate with
External equipment is communicated.
3. a kind of self-regulating machine redundancy switching system according to claim 2, it is characterised in that described DB25 interfaces are provided with
Two, described DB9 interfaces are provided with four tunnels.
A kind of 4. self-regulating machine redundancy switching system according to claim 1, it is characterised in that described switching circuit board
In be provided with the switching that be connected with CPLD main control chips and switch.
A kind of 5. self-regulating machine redundancy switching system according to claim 1, it is characterised in that described self-regulating machine A systems and
Self-regulating machine B systems are in communication with each other by 232 serial ports of switching circuit board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720720718.7U CN207020479U (en) | 2017-06-20 | 2017-06-20 | A kind of self-regulating machine redundancy switching system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720720718.7U CN207020479U (en) | 2017-06-20 | 2017-06-20 | A kind of self-regulating machine redundancy switching system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100932A (en) * | 2017-06-20 | 2018-12-28 | 卡斯柯信号有限公司 | A kind of self-regulating machine redundancy switching system and method |
| CN109254526A (en) * | 2018-09-06 | 2019-01-22 | 南京航空航天大学 | A kind of multilevel security redundancy control system hanging voluntarily transport trolley |
| CN110968021A (en) * | 2019-12-20 | 2020-04-07 | 上海亨钧科技股份有限公司 | Interlocking machine dual-system switching system and control method |
-
2017
- 2017-06-20 CN CN201720720718.7U patent/CN207020479U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100932A (en) * | 2017-06-20 | 2018-12-28 | 卡斯柯信号有限公司 | A kind of self-regulating machine redundancy switching system and method |
| CN109254526A (en) * | 2018-09-06 | 2019-01-22 | 南京航空航天大学 | A kind of multilevel security redundancy control system hanging voluntarily transport trolley |
| CN109254526B (en) * | 2018-09-06 | 2021-02-02 | 南京航空航天大学 | Multi-stage safety redundancy control system for suspended self-propelled conveying trolley |
| CN110968021A (en) * | 2019-12-20 | 2020-04-07 | 上海亨钧科技股份有限公司 | Interlocking machine dual-system switching system and control method |
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