CN202094891U - Portable universal serial bus (USB)-optical fiber converter for serial communication - Google Patents
Portable universal serial bus (USB)-optical fiber converter for serial communication Download PDFInfo
- Publication number
- CN202094891U CN202094891U CN2011200845090U CN201120084509U CN202094891U CN 202094891 U CN202094891 U CN 202094891U CN 2011200845090 U CN2011200845090 U CN 2011200845090U CN 201120084509 U CN201120084509 U CN 201120084509U CN 202094891 U CN202094891 U CN 202094891U
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- optical fiber
- usb
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- circuit
- serial
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Abstract
The utility model relates to a portable universal serial bus (USB)-optical fiber converter for serial communication, which comprises a shell, a USB interface, a USB interface circuit and a USB-RS232 bidirectional conversion bridge circuit. The portable USB-optical fiber converter for the serial communication is characterized in that photoelectric conversion circuits are respectively arranged at the serial port transmitting end and the serial port receiving end of the USB-RS232 bidirectional conversion bridge circuit, the shell is provided with an optical fiber transmitting interface which is connected with the photoelectric conversion circuit at the serial port transmitting end and an optical fiber receiving interface which is connected with the photoelectric conversion circuit at the serial port receiving end, optical fibers which are respectively connected with the optical fiber transmitting interface and the optical fiber receiving interface are correspondingly connected with the optical fiber receiving end interface and the optical fiber transmitting end interface of a microcontroller. Since the optical fibers are used as communication transmission media, the portable USB-optical fiber converter for the serial communication has the outstanding advantages of high voltage isolation, electromagnetic interference resistance and long transmission distance.
Description
Technical field
The utility model belongs to chromacoder, particularly relates to a kind of Portable USB-optic fiber converter that is used for serial communication.
Background technology
USB (be called for short USB) is low with its cost, speed fast, highly versatile, plurality of advantages such as hot-swappable, has obtained widespread usage in computer.Simultaneously, for the bidirectional data communication of USB interface and RS232 interface also have can practical application substantial progress, the conversion of USB-RS232 is to adopt special chip usually, is transferred to microcontroller with the form of Transistor-Transistor Logic level by the DB plug and handles.But there is the defective that causes reliability decrease because of electromagnetic interference in USB in the long-range data transmission.
Summary of the invention
The utility model is to exist because of electromagnetic interference causes the technical problem of reliability decrease in the long-range data transmission in order to overcome USB, and a kind of Portable USB-optic fiber converter that is used for serial communication is provided.
The utility model is taked following technical scheme for achieving the above object: a kind of USB-optic fiber converter, comprise housing and USB interface thereof, usb circuit and USB-RS232 bi-directional conversion bridgt circuit, feature is, USB-RS232 bi-directional conversion bridgt circuit serial ports transmitting terminal and serial ports receiving terminal are respectively equipped with photoelectric switching circuit, described housing is provided with the optical fiber transmission interface that is connected in serial ports transmitting terminal photoelectric switching circuit and is connected in the optical fiber receiving interface of serial ports receiving terminal photoelectric switching circuit, and the optical fiber that is connected to optical fiber transmission interface and optical fiber receiving interface is connected with the transmitting terminal interface with the corresponding optical fiber receiving terminal of microcontroller interface.
The utility model can also be taked following technical measures:
Described optical fiber transmission interface and the optical fiber receiving interface that is arranged at housing.
Described housing is provided with the power supply indicator window, is provided with photoconductive tube between described window and the paster LED.
The beneficial effects of the utility model and advantage are: the usb circuit of this Portable USB-optic fiber converter can virtually become local COM serial port (COM1-COM256), need not revise existing serial communication software, usb circuit is provided with URAT by programming, support various data formats and baud rate, support USB to hang up and the restoring signal function.This transducer is full-duplex communication, and traffic rate reaches as high as 1Mbps.This transducer is encapsulated in the housing, has the effect of good electromagnetic shielding.The utility model adopts optical fiber to have the outstanding advantage of isolated high voltage, anti-electromagnetic interference, long transmission distance as communication transmission media.
Description of drawings
Accompanying drawing 1 is the utility model example structure schematic diagram.
Accompanying drawing 2 is the utility model electrical schematic diagrams.
Mark among the figure: 1 housing, 1-1 power supply indicator window, 2USB interface, 3 optical fiber transmission interfaces, 4 optical fiber receiving interfaces, 5 optical fiber.
Embodiment
As shown in Figure 1, 2, housing 1 is provided with USB interface 2, USB interface 2 is connected with usb circuit in the housing 1, and the 5V supply voltage of introducing from USB interface 2 and D+, the D-of direct current ground GND and usb circuit hold and be connected in USB-RS232 bi-directional conversion bridgt circuit.USB-RS232 bi-directional conversion bridgt circuit serial ports transmitting terminal and serial ports receiving terminal are respectively equipped with photoelectric switching circuit, housing is provided with optical fiber transmission interface 3 that is connected in serial ports transmitting terminal photoelectric switching circuit and the optical fiber receiving interface 4 that is connected in serial ports receiving terminal photoelectric switching circuit, and the model of each interface of embodiment is respectively HFBR-1521, HFBR-2521.Housing is provided with power supply indicator window 1-1, is provided with photoconductive tube between described window and the paster LED.
The optical fiber 5 that is connected in optical fiber transmission interface 3 and optical fiber receiving interface 4 is connected with the transmitting terminal interface with the corresponding optical fiber receiving terminal of microcontroller interface.
Claims (2)
1. Portable USB-optic fiber converter that is used for serial communication, comprise housing and USB interface thereof, usb circuit and USB-RS232 bi-directional conversion bridgt circuit, it is characterized in that: USB-RS232 bi-directional conversion bridgt circuit serial ports transmitting terminal and serial ports receiving terminal are respectively equipped with photoelectric switching circuit, described housing is provided with the optical fiber transmission interface that is connected in serial ports transmitting terminal photoelectric switching circuit and is connected in the optical fiber receiving interface of serial ports receiving terminal photoelectric switching circuit, and the optical fiber that is connected to optical fiber transmission interface and optical fiber receiving interface is connected with the transmitting terminal interface with the corresponding optical fiber receiving terminal of microcontroller interface.
2. Portable USB-optic fiber converter according to claim 1 is characterized in that: described housing is provided with the power supply indicator window, is provided with photoconductive tube between described window and the paster LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200845090U CN202094891U (en) | 2011-03-28 | 2011-03-28 | Portable universal serial bus (USB)-optical fiber converter for serial communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200845090U CN202094891U (en) | 2011-03-28 | 2011-03-28 | Portable universal serial bus (USB)-optical fiber converter for serial communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094891U true CN202094891U (en) | 2011-12-28 |
Family
ID=45369931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200845090U Expired - Fee Related CN202094891U (en) | 2011-03-28 | 2011-03-28 | Portable universal serial bus (USB)-optical fiber converter for serial communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020532A (en) * | 2014-06-26 | 2014-09-03 | 苏州青云能源科技有限公司 | Serial communication optical fiber conversion device with universal serial bus (USB) interface |
-
2011
- 2011-03-28 CN CN2011200845090U patent/CN202094891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020532A (en) * | 2014-06-26 | 2014-09-03 | 苏州青云能源科技有限公司 | Serial communication optical fiber conversion device with universal serial bus (USB) interface |
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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: 20111228 Termination date: 20170328 |