CN103353862B - USB merges device and its application system with serial ports - Google Patents
USB merges device and its application system with serial ports Download PDFInfo
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- CN103353862B CN103353862B CN201310234219.3A CN201310234219A CN103353862B CN 103353862 B CN103353862 B CN 103353862B CN 201310234219 A CN201310234219 A CN 201310234219A CN 103353862 B CN103353862 B CN 103353862B
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Abstract
The present invention relates to USB merges device and its application system with serial ports.The device includes USB interface, serial interface and Interface Terminal.The data receiver RXD of serial interface is connected with the first serial data end of USB interface, the data sending terminal TXD of serial interface is connected with the second serial data end of USB interface, the grounding pin of serial interface is connected with the earth terminal of USB interface, the cathode power supply end of USB interface is connected with the pin PIN1 of Interface Terminal, first serial data end of USB interface is connected with the pin PIN2 of Interface Terminal, second serial data end of USB interface is connected with the pin PIN3 of Interface Terminal, and the earth terminal of USB interface is connected with the pin PIN4 of Interface Terminal.The present invention carries out wire jumper according to the interface type of ustomer premises access equipment in the interface circuit of trade company's end equipment, you can select USB interface or serial interface communication, have the advantages that highly versatile, easy to use.
Description
Technical field
The present invention relates to USB merges device and its application system with serial ports.
Background technology
Current device category is various, and the interface type having is also different.For example, device A is only connect with serial ports
Mouthful, equipment B only has USB interface.USB interface is four cable architectures, and wherein two is the serial-port for transmission data, in addition
Two is the power line that powers for upstream device.Serial interface is 9 needle interface structures, during for data communication, is connect using data
Receiving end RXD, three lines of data sending terminal TXD and grounding pin are completed to communicate by being connected with equipment.
To be communicated with device A, just must adopt the host computer with serial interface, will also be equipped with corresponding Serial Port Line
Cable, inconvenient.In the same manner, to be communicated with equipment B, must just adopt the host computer with USB interface, and need to be equipped with
Corresponding USB cable.If USB interface and serial interface are integrated on host computer, the manufacture of host computer will necessarily be increased
Cost, and the process circuit of host computer can not be simplified.In a word, the versatility of current USB interface, serial interface
Difference, in-convenience in use.
Content of the invention
It is an object of the invention to proposing a kind of USB merges device with serial ports, which can solve poor universality, awkward
Problem.
In order to achieve the above object, the technical solution adopted in the present invention is as follows：
USB merges device with serial ports, and which includes USB interface, serial interface and Interface Terminal.USB interface is with the first string
Row data terminal, the second serial data end, cathode power supply end and earth terminal, serial interface have data receiver RXD, data is activation
End TXD and grounding pin；Interface Terminal has pin PIN1, pin PIN2, pin PIN3 and pin PIN4, the number of serial interface
It is connected with the first serial data end of USB interface according to receiving terminal RXD, the of the data sending terminal TXD of serial interface and USB interface
Two serial data ends connect, and the grounding pin of serial interface is connected with the earth terminal of USB interface, the cathode power supply end of USB interface
It is connected with the pin PIN1 of Interface Terminal, the first serial data end of USB interface is connected with the pin PIN2 of Interface Terminal, USB
Second serial data end of interface is connected with the pin PIN3 of Interface Terminal, the earth terminal of USB interface and the pin of Interface Terminal
PIN4 connects.
Optionally, the serial interface is RS232 interfaces or RS485 interfaces or RS422 interfaces.
The present invention also proposes the application system that a kind of USB merges device with serial ports, and which includes USB as above and serial ports
Merge device and an interface circuit, the interface circuit includes an electrically connected port for being used for being connected with post processing electric circuit,
There is the electrically connected port first port, second port, the 3rd port and the 4th port, first port to be grounded, second port
Optionally be connected with resistance R2, resistance R4 by the first jumper cap, the 3rd port by the second jumper cap optionally with electricity
Resistance R1, resistance R3 connections, the 4th port are connected with power supply, resistance R1, resistance R2, resistance R3 and resistance R4 and post processing electric circuit
Connection；Interface Terminal and electrically connected port grafting, the pin PIN1 of Interface Terminal are connected with the 4th port of electrically connected port, are connect
The pin PIN2 of mouthful terminal is connected with the second port of electrically connected port, and the of the pin PIN3 of Interface Terminal and electrically connected port
Three ports connect, and the pin PIN4 of Interface Terminal is connected with the first port of electrically connected port.
Preferably, the 4th port of electrically connected port is connected with power supply by a fuse.
Preferably, the voltage of the power supply is 5V.
The present invention has the advantages that：
According to the interface type of ustomer premises access equipment, wire jumper is carried out in the interface circuit of trade company's end equipment, you can select USB to connect
Mouthful or serial interface communication, have the advantages that highly versatile, easy to use.
Description of the drawings
Fig. 1 is the external structure schematic diagram that the USB of present pre-ferred embodiments merges device with serial ports；
Fig. 2 is the wiring diagram that the USB of present pre-ferred embodiments merges device with serial ports；
Fig. 3 is the schematic diagram of the interface circuit of the application system that the USB of present pre-ferred embodiments merges device with serial ports.
Specific embodiment
Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
As depicted in figs. 1 and 2, USB merges device with serial ports, and which includes usb 1, serial interface 2 and Interface Terminal 3.
Usb 1 has the first serial data end PIN2, the second serial data end PIN3, cathode power supply end PIN1 and connects
Ground terminal PIN4.Serial interface 2 has data receiver RXD PIN3, data sending terminal TXD PIN2 and grounding pin PIN4.
Interface Terminal 3 has pin PIN1, pin PIN2, pin PIN3 and pin PIN4, the data receiver of serial interface 2
End RXD PIN3 be connected with the first serial data end PIN2 of usb 1, the data sending terminal TXD PIN2 of serial interface 2 and
The second serial data end PIN3 connections of USB interface, the grounding pin PIN4 of the serial interface 2 and earth terminal PIN4 of usb 1
Connection, the cathode power supply end PIN1 of usb 1 are connected with the pin PIN1 of Interface Terminal 3, the first serial data of usb 1
End PIN2 is connected with the pin PIN2 of Interface Terminal 3, the second serial data end PIN2 of usb 1 and the pin of Interface Terminal 3
PIN3 connects, and the earth terminal PIN4 of usb 1 is connected with the pin PIN4 of Interface Terminal 3.
The serial interface 2 of the present embodiment can be RS232 interfaces, RS485 interfaces, RS422 interfaces etc..
As shown in figure 3, the present embodiment also proposes the application system that a kind of USB merges device with serial ports, which includes such as this reality
Apply the USB described in example and merge device and an interface circuit with serial ports.
The interface circuit includes electrically connected port P1 for being used for being connected, the electrically connected port with post processing electric circuit
There is P1 first port PIN1, second port PIN2, the 3rd port PIN3 and the 4th port PIN4, first port to be grounded PIN1,
Second port PIN2 is optionally connected with resistance R2, resistance R4 by the first jumper cap K1, and the 3rd port PIN3 passes through second
Jumper cap K2 is optionally connected with resistance R1, resistance R3, and the 4th port PIN4 is connected with 5V power supplys by fuse F1.Resistance
R1, resistance R2, resistance R3 and resistance R4 are connected with post processing electric circuit.
Interface Terminal 3 and the grafting of electrically connected port P1, the pin PIN1 of Interface Terminal 3 and the 4th end of electrically connected port P1
Mouthful PIN4 connection, the pin PIN2 of Interface Terminal 3 be connected with second port PIN2 of electrically connected port P1, and Interface Terminal 3 draws
Pin PIN3 is connected with the 3rd port PIN3 of electrically connected port P1, and the of the pin PIN4 of Interface Terminal 3 and electrically connected port P1
Single port PIN1 connects.
During use, according to the interface type of user equipment, the such as interface type of user equipment A is USB interface, then pass through
Jumper cap K1, jumper cap K2 make resistance R1, resistance R2 and the conducting of electrically connected port P1；If the interface type of user equipment B is string
Mouth interface, then make resistance R3, resistance R4 and the conducting of electrically connected port P1 by jumper cap K1, jumper cap K2.Operation is very flexible,
And it is convenient.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (3)
1.USB merges the application system of device with serial ports, it is characterised in that merge device and an interface with serial ports including USB
Circuit, the USB are merged device and include USB interface and serial interface with serial ports, USB interface have the first serial data end, second
Serial data end, cathode power supply end and earth terminal, serial interface have data receiver RXD, data sending terminal TXD and grounding lead
Pin, it is characterised in that the USB is merged device and also includes that an Interface Terminal, Interface Terminal have pin PIN1, pin with serial ports
PIN2, pin PIN3 and pin PIN4, the data receiver RXD of serial interface are connected with the first serial data end of USB interface,
The data sending terminal TXD of serial interface is connected with the second serial data end of USB interface, the grounding pin and USB of serial interface
The earth terminal connection of interface, the cathode power supply end of USB interface are connected with the pin PIN1 of Interface Terminal, the first string of USB interface
Row data terminal is connected with the pin PIN2 of Interface Terminal, the second serial data end of USB interface and the pin PIN3 of Interface Terminal
Connection, the earth terminal of USB interface are connected with the pin PIN4 of Interface Terminal；The interface circuit includes that one is used for and rear class process
The electrically connected port of circuit connection, the electrically connected port have first port, second port, the 3rd port and the 4th port,
First port is grounded, and second port is optionally connected with resistance R2, resistance R4 by the first jumper cap, and the 3rd port passes through the
Two jumper cap are optionally connected with resistance R1, resistance R3, and the 4th port is connected with power supply, resistance R1, resistance R2, resistance R3 and
Resistance R4 is connected with post processing electric circuit；Interface Terminal and electrically connected port grafting, the pin PIN1 of Interface Terminal with electrically connect
The 4th port connection of port, the pin PIN2 of Interface Terminal is connected with the second port of electrically connected port, and Interface Terminal draws
Pin PIN3 is connected with the 3rd port of electrically connected port, and the pin PIN4 of Interface Terminal is connected with the first port of electrically connected port
Connect；When Interface Terminal connects USB interface, then make resistance R1, resistance R2 and be electrically connected by the first jumper cap and the second jumper cap
Connect port conducting；When Interface Terminal connects serial interface, then resistance R3, resistance R4 are made by the first jumper cap, the second jumper cap
Turn on electrically connected port.
2. USB as claimed in claim 1 merges the application system of device with serial ports, it is characterised in that the of electrically connected port
Four ports are connected with power supply by a fuse.
3. USB as claimed in claim 1 merges the application system of device with serial ports, it is characterised in that the voltage of the power supply
For 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234219.3A CN103353862B (en) | 2013-06-13 | 2013-06-13 | USB merges device and its application system with serial ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234219.3A CN103353862B (en) | 2013-06-13 | 2013-06-13 | USB merges device and its application system with serial ports |
Publications (2)
| Publication Number | Publication Date |
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| CN103353862A CN103353862A (en) | 2013-10-16 |
| CN103353862B true CN103353862B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310234219.3A Active CN103353862B (en) | 2013-06-13 | 2013-06-13 | USB merges device and its application system with serial ports |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105242591B (en) * | 2015-08-17 | 2017-12-12 | 合肥宝龙达信息技术有限公司 | A kind of input/output interface combination system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315615A (en) * | 2008-07-08 | 2008-12-03 | 深圳市科陆电子科技股份有限公司 | Multichannel communication system and duplex selection distribution method of communication serial port in system |
| CN101707315A (en) * | 2009-12-01 | 2010-05-12 | 西安终南信息技术有限公司 | Multipurpose serial converter |
| CN203405811U (en) * | 2013-06-13 | 2014-01-22 | 广东岭南通股份有限公司 | USB and serial port merging device and application system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8705550B2 (en) * | 2005-08-08 | 2014-04-22 | Qualcomm Incorporated | Device interface architecture and protocol |
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2013
- 2013-06-13 CN CN201310234219.3A patent/CN103353862B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315615A (en) * | 2008-07-08 | 2008-12-03 | 深圳市科陆电子科技股份有限公司 | Multichannel communication system and duplex selection distribution method of communication serial port in system |
| CN101707315A (en) * | 2009-12-01 | 2010-05-12 | 西安终南信息技术有限公司 | Multipurpose serial converter |
| CN203405811U (en) * | 2013-06-13 | 2014-01-22 | 广东岭南通股份有限公司 | USB and serial port merging device and application system thereof |
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| CN103353862A (en) | 2013-10-16 |
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