CN216014243U - Dual-core peripheral digital interface switching system - Google Patents
Dual-core peripheral digital interface switching system Download PDFInfo
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- CN216014243U CN216014243U CN202122038848.1U CN202122038848U CN216014243U CN 216014243 U CN216014243 U CN 216014243U CN 202122038848 U CN202122038848 U CN 202122038848U CN 216014243 U CN216014243 U CN 216014243U
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Abstract
The utility model belongs to the technical field of digital electronic communication, and particularly relates to a peripheral digital interface switching system. A dual core peripheral digital interface switching system comprising: a main controller; the standby controller is in signal connection with the main controller; a communication interface terminal; further comprising: the main watchdog module is connected with a dog feeding signal end of the main controller; the two ends of the switch are respectively connected with the communication end and the communication interface terminal of the main controller, and the controlled end is connected with the enabling signal end of the main watchdog module; and two ends of the standby digital switch are respectively connected with the communication end and the communication interface terminal of the standby controller. The utility model can realize automatic switching between the main controller and the standby controller, and the standby controller can realize the backup function and can replace the main controller.
Description
Technical Field
The utility model belongs to the technical field of digital electronic communication, and particularly relates to a peripheral digital interface switching system.
Background
Digital electronic communication equipment generally has a controller, and for simple equipment, a circuit is designed by taking a single controller as a core, and if the controller fails or is damaged, the equipment fails and is damaged. In some electronic devices with performance and stability emphasis, the controller can perform dual-core data backup, but for the peripheral communication interface of the device, only the main controller is usually connected with the peripheral communication interface, and once the main controller fails or is damaged, the whole system cannot communicate with other devices.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a dual-core system with two controllers cannot communicate with other devices under the condition that a main controller fails or is damaged, and aims to provide a dual-core peripheral digital interface switching system.
A dual core peripheral digital interface switching system comprising: a main controller; the standby controller is in signal connection with the main controller; a communication interface terminal;
further comprising:
the main watchdog module is connected with the dog feeding signal end of the main controller;
the two ends of the switch are respectively connected with the communication end of the main controller and the communication interface terminal, and the controlled end is connected with the enabling signal end of the main watchdog module;
and two ends of the standby digital switch are respectively connected with the communication end of the standby controller and the communication interface terminal.
Under the normal working condition of the utility model, the main controller feeds the corresponding main watchdog module, and the enabling signal of the main watchdog module controls the opening of the main digital switch, so that the main controller is connected with the communication interface terminal to carry out digital communication. When main control unit trouble or damage, can't provide main watchdog module and feed the dog signal, main watchdog module no longer exports the enable signal and gives main digital switch, main digital switch will close, the connection of main control unit and communication interface terminal has been broken off, this moment because main control unit interrupt with the standby control between the communication connection, the standby control ware can learn main control unit trouble or damage, the standby control ware passes through standby digital switch and is connected with the communication interface terminal this moment, carry out digital communication. By the aid of the design, after the main controller fails or fails, the standby controller can replace the main controller to maintain operation of the system, and fault reporting can be performed through the switched communication interface terminals, so that stability of the system is improved.
The dual-core peripheral digital interface switching system further comprises:
and the standby watchdog module is connected with the dog feeding signal end of the standby controller, and the enabling signal end is connected with the controlled end of the standby digital switch.
So that main control unit is at normal during operation, reserve digital switch is in the off-state, and when main control unit need switch to reserve controller during operation because trouble or damage, reserve controller feeds the dog signal to reserve watchdog module output watchdog, and reserve watchdog module output enable signal gives reserve digital switch, and reserve digital switch will open for reserve controller connects the communication interface terminal, carries out digital communication. In the above way, the automatic switching between the main controller and the standby controller can be realized.
The dual-core peripheral digital interface switching system further comprises:
and the digital interface chip is respectively connected with the main digital switch, the standby digital switch and the communication interface terminal. And the digital interface chip is used as an intermediate bridge to realize friendly communication between the main controller or the standby controller and the communication interface terminal.
The number of the communication interface terminals is at least two, and the at least two communication interface terminals are respectively connected with the digital interface chip.
And a communication interface is arranged between the main controller and the standby controller, and the main controller and the standby controller are in signal connection through the communication interface.
The positive progress effects of the utility model are as follows: the utility model adopts a dual-core peripheral digital interface switching system, and has the following advantages:
1. the automatic switching between the main controller and the standby controller can be realized;
2. the standby controller can realize the backup function and can replace the main controller;
3. the two independent watchdog modules are used for switching, so that the switching accuracy in the case of failure is improved.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific drawings.
Referring to fig. 1, a dual-core peripheral digital interface switching system includes a main controller 1, a standby controller 2, a digital interface chip 3, and a communication interface terminal 4.
The main controller 1 is a process controller that mainly works. The dog feeding signal end of the main controller 1 is connected with the main watchdog module 11, the enabling signal end of the main watchdog module 11 is connected with the controlled end of the main digital switch 12, the two switch ends of the main digital switch 12 are respectively connected with the communication end and the communication interface terminal 4 of the main controller 1, preferably, the two switch ends of the main digital switch 12 are respectively connected with the communication end and the digital interface chip 3 of the main controller 1, and the communication interface terminal 4 is connected with the main digital switch 12 through the digital interface chip 3.
Under the normal operating condition of main controller 1, main controller 1 feeds the dog to its main watchdog module 11 that corresponds, and main digital switch 12 of enable signal control of main watchdog module 11 opens for main controller 1 connects communication interface terminal 4 through digital interface chip 3, carries out digital communication.
The main controller 1 and the standby controller 2 are in signal connection, a communication interface is arranged between the main controller 1 and the standby controller 2, and mutual state monitoring and data backup are realized between the main controller 1 and the standby controller.
The dog feeding signal end of the standby controller 2 is connected with the standby watchdog module 21, the enabling signal end of the standby watchdog module 21 is connected with the controlled end of the standby digital switch 22, and the two ends of the switch of the standby digital switch 22 are respectively connected with the communication end and the communication interface terminal 4 of the standby controller 2. Preferably, both switch ends of the standby digital switch 22 are connected to the communication end of the standby controller 2 and the digital interface chip 3, respectively, and the communication interface terminal 4 is connected to the standby digital switch 22 via the digital interface chip 3.
When main control unit 1 trouble or damage, can't provide main watchdog module 11 and feed the dog signal, main watchdog module 11 no longer exports enable signal and gives main digital switch 12, main digital switch 12 will close, main control unit 1 and communication interface terminal 4's connection has been broken, this moment because main control unit 1 has interrupted and standby controller 2 between communication connection, main control unit 1 trouble or damage can be known to standby controller 2, standby controller 2 exports the dog signal of feeding to standby watchdog module 21 this moment, standby watchdog module 21 exports enable signal and gives standby digital switch 22, standby digital switch 22 will open, make standby controller 2 connect communication interface terminal 4, carry out digital communication. When the standby controller 2 is in failure or damaged, the normal working state of the main controller 1 can be switched back to the same, and the automatic switching between the main controller 1 and the standby controller 2 is realized.
The digital interface chip 3 is connected with the main digital switch 12, the standby digital switch 22 and the communication interface terminal 4 respectively. And friendly communication between the main controller 1 or the standby controller 2 and the communication interface terminal 4 is realized by using the digital interface chip 3 as an intermediate bridge.
The number of the communication interface terminals 4 is at least two, and the at least two communication interface terminals 4 are respectively connected with the digital interface chip 3.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A dual core peripheral digital interface switching system comprising: a main controller; the standby controller is in signal connection with the main controller; a communication interface terminal;
it is characterized by also comprising:
the main watchdog module is connected with the dog feeding signal end of the main controller;
the two ends of the switch are respectively connected with the communication end of the main controller and the communication interface terminal, and the controlled end is connected with the enabling signal end of the main watchdog module;
and two ends of the standby digital switch are respectively connected with the communication end of the standby controller and the communication interface terminal.
2. The dual core peripheral digital interface switching system of claim 1, further comprising:
and the standby watchdog module is connected with the dog feeding signal end of the standby controller, and the enabling signal end is connected with the controlled end of the standby digital switch.
3. The dual core peripheral digital interface switching system of claim 1 or 2, further comprising:
and the digital interface chip is respectively connected with the main digital switch, the standby digital switch and the communication interface terminal.
4. The dual-core peripheral digital interface switching system according to claim 3, wherein the number of the communication interface terminals is at least two, and at least two of the communication interface terminals are respectively connected to the digital interface chip.
5. The dual core peripheral digital interface switching system of claim 1, wherein a communication interface is provided between said primary controller and said backup controller, said primary controller and said backup controller being in signal communication via said communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122038848.1U CN216014243U (en) | 2021-08-26 | 2021-08-26 | Dual-core peripheral digital interface switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122038848.1U CN216014243U (en) | 2021-08-26 | 2021-08-26 | Dual-core peripheral digital interface switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216014243U true CN216014243U (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122038848.1U Active CN216014243U (en) | 2021-08-26 | 2021-08-26 | Dual-core peripheral digital interface switching system |
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| CN (1) | CN216014243U (en) |
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2021
- 2021-08-26 CN CN202122038848.1U patent/CN216014243U/en active Active
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