CN205827365U - A kind of circuit back panel of band dual processors bus switch function - Google Patents
A kind of circuit back panel of band dual processors bus switch function Download PDFInfo
- Publication number
- CN205827365U CN205827365U CN201620565800.2U CN201620565800U CN205827365U CN 205827365 U CN205827365 U CN 205827365U CN 201620565800 U CN201620565800 U CN 201620565800U CN 205827365 U CN205827365 U CN 205827365U
- Authority
- CN
- China
- Prior art keywords
- circuit
- dual processors
- back panel
- switch function
- bus switch
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses the circuit back panel of a kind of band dual processors bus switch function, including circuit board, display lamp, display lamp and for connecting the contact pin of telephone exchange, described circuit board possesses dual processors bus converting circuit.This circuit back panel accesses telephone exchange by contact pin, and front two socket pins are used for connecting dual processors, the 3rd socket pin bus after output routing, both can meet the automatic switchover of dual processors, can meet again the normal work of single CPU；This circuit back panel has two status indicator lamps, indicates self working power and duty, while providing dual processors bus switch function, indicates to the user that self work is the most normal.
Description
Technical field
This utility model relates to a kind of circuit back panel, the circuit back panel of a kind of band dual processors bus switch function.
Background technology
In communication of power system field, the stability requirement to equipment is the highest, and the main function components of equipment is required to 1
+ 1 backup, the CPU backup functionality of tradition embedded device is typically all and is realized by software detection mode, and switching time is long, can
Low by property, affect Consumer's Experience.
Utility model content
The purpose of this utility model is to provide the circuit back panel of a kind of band dual processors bus switch function, above-mentioned to solve
The problem proposed in background technology.
For achieving the above object, the following technical scheme of this utility model offer:
The circuit back panel of a kind of band dual processors bus switch function, including circuit board, display lamp, display lamp and for connecting
The contact pin of telephone exchange, described circuit board possesses dual processors bus converting circuit.
As further program of the utility model: described contact pin is installed on circuit board by the way of welding；Phone
The CPU model of switch uses P80C652EBA.
As this utility model further scheme: the circuit that described contact pin is connected with telephone exchange includes CPU1's
Connect the bus circuit after circuit, the connection circuit of CPU2 and output routing.
Compared with prior art, the beneficial effects of the utility model are: the first, this circuit back panel accesses phone by contact pin
Switch, front two socket pins are used for connecting dual processors, the 3rd socket pin bus after output routing, both can meet dual processors
Automatic switchover, the normal work of single CPU can be met again；The second, this circuit back panel has two status indicator lamps, indicates self
Working power and duty.While dual processors bus switch function is provided, indicate to the user that self work is the most normal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the circuit back panel of band dual processors bus switch function；
Fig. 2 is the contact pin figure of the circuit back panel of band dual processors bus switch function；
Fig. 3 be band dual processors bus switch function circuit back panel in contact pin connect circuit theory diagrams；
Fig. 4 be band dual processors bus switch function circuit back panel in dual processors bus converting circuit schematic diagram；
In figure: 1. circuit board；1-1. display lamp；1-2. display lamp；2. contact pin；4. dual processors bus converting circuit；3-
The connection circuit of 1.CPU1；The connection circuit of 3-2.CPU2；3-3. bus circuit；3. the circuit that telephone exchange connects.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1～4, in this utility model embodiment, the circuit back panel of a kind of band dual processors bus switch function, bag
Include circuit board 1, display lamp 1-1, display lamp 1-2 and for connecting the contact pin 2 of telephone exchange, described circuit board 1 possesses double
Cpu bus switching circuit 4.Described contact pin 2 is installed on circuit board 1 by the way of welding；The CPU model of telephone exchange is adopted
Use P80C652EBA.The circuit 3 that described contact pin 2 is connected with telephone exchange includes the connection connecting circuit 3-1, CPU2 of CPU1
Bus circuit 3-3 after circuit 3-2 and output routing.
Operation principle of the present utility model is: the circuit back panel of this practicality band dual processors bus switch function, is to pass through circuit
After backboard accesses the cpu circuit of telephone exchange, the dual processors bus converting circuit 4 on circuit back panel monitor phone in real time and hand over
CPU duty on changing planes, when detecting that one of CPU work occurs abnormal, switches to outfan cpu bus separately
One piece of CPU operating circuit, in the case of dual processors works simultaneously, can specify primary CPU by this circuit back panel, and provide instruction
Signal externally presents for cpu circuit.Dual processors and output bus signal end is connected respectively, total by dual processors by three socket pins 2
Line exports after carrying out routing to one external bus, for telephone exchange.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (3)
1. a circuit back panel for band dual processors bus switch function, including circuit board (1), display lamp (1-1), display lamp (1-2)
With the contact pin (2) for connecting telephone exchange, it is characterised in that described circuit board possesses dual processors bus converting circuit on (1)
(4)。
The circuit back panel of band dual processors bus switch function the most according to claim 1, it is characterised in that described contact pin (2)
It is installed on circuit board (1) by the way of welding；The CPU model of telephone exchange uses P80C652EBA.
The circuit back panel of band dual processors bus switch function the most according to claim 1, it is characterised in that described contact pin (2)
The circuit (3) being connected with telephone exchange includes the connection circuit (3-1) of CPU1, the connection circuit (3-2) of CPU2 and output
Bus circuit (3-3) after routing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620565800.2U CN205827365U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit back panel of band dual processors bus switch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620565800.2U CN205827365U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit back panel of band dual processors bus switch function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205827365U true CN205827365U (en) | 2016-12-21 |
Family
ID=57569634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620565800.2U Expired - Fee Related CN205827365U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit back panel of band dual processors bus switch function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205827365U (en) |
-
2016
- 2016-06-13 CN CN201620565800.2U patent/CN205827365U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20200613 |