CN203012707U - USB (Universal Serial Bus) serial port three-in-one converter - Google Patents
USB (Universal Serial Bus) serial port three-in-one converter Download PDFInfo
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- CN203012707U CN203012707U CN2012206432043U CN201220643204U CN203012707U CN 203012707 U CN203012707 U CN 203012707U CN 2012206432043 U CN2012206432043 U CN 2012206432043U CN 201220643204 U CN201220643204 U CN 201220643204U CN 203012707 U CN203012707 U CN 203012707U
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- 238000012827 research and development Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 4
- 239000012467 final product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a USB (Universal Serial Bus) serial port three-in-one converter, which comprises a PL-2303HX chip. The input end of the PL-2303HX chip is connected with a USB interface. One output end of the PL-2303HX chip is connected with a four-pin interface and the other two output ends of the PL-2303HX chip are respectively connected with the input ends of an RS232 chip and an RS485 chip. The output ends of the RS232 chip and the RS485 chip are connected with a nine-pin interface. Since three kinds of interfaces, i.e. RS232, RS485 and UART-TTL (Universal Asynchronous Receiver/Transmitter-Transistor-Transistor Logic) interfaces are integrated in one body, as long as a module is inserted into the USB interface of a computer, the three kinds of bus interfaces can be obtained, the three interfaces do not conflict with one another, free use by users under three kinds of different field buses is facilitated and the USB serial port three-in-one converter is very practical for electronic product research and development personnel and engineering personnel.
Description
Technical field:
The utility model relates to the device that a kind of computing machine USB universal serial bus mouth converts industrial interface commonly used to, particularly relates to the three-in-one converter of a kind of USB serial port.
Background technology:
At industrial circle or electronic product bus interface commonly used, RS485, RS232, UART-TTL bus interface are arranged at present, but the development and reform along with computing machine, most of computing machine has all deleted the RS232 interface, the substitute is USB USB (universal serial bus) bus, the advantage of usb bus be support hot plug and connection device many, but can't be directly and serial line interface electronic product Direct Communication.
For this situation, people develop some converters, and most of converters such as RS232 turn RS485, USB RS 232 etc. in the market, and they only have simple function or application, and are very inconvenient for research and development and engineering staff.
The utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of reasonable in design, easy to use, three-in-one converter of USB serial port that applicability is strong is provided.
The technical solution of the utility model is: the three-in-one converter of a kind of USB serial port, contain the PL-2303HX chip, the input end of described PL-2303HX chip is connected with USB interface, an output terminal of described PL-2303HX chip is connected with 4 cushion interfaces, its two other output terminal is connected respectively input end and is connected with the RS485 chip with the RS232 chip, described RS232 chip is connected with 9 cushion interfaces with the RS485 chip output.
Described 4 cushion interfaces are the 4 single 2.54mm spacing of pin interfaces, and four lead-in wires that arrange in it are respectively VDD, TXD, RXD and GND.
Described 9 cushion interfaces are DB9 computer standard 9 cushion interfaces, and wherein the 2nd, 3,5 pins are respectively RXD, TXD, the GND pin of RS232, and the 7th, 8 pins are respectively B-, the A+ pin of RS485.
The beneficial effects of the utility model are:
1, the utility model rolls into one three kinds of interface RS232, RS485 and UART-TTL, as long as
Module is inserted on the USB mouth of computing machine just can obtain above three kinds of bus interface, and three interfaces do not conflict mutually, facilitate the user freely to use under three kinds of Different field buses, very practical to electronic product research and development and engineering staff.
2, the utility model M signal by diode-isolated, realizes that three interfaces independently are independent of each other respectively, and handled easily, only need converter is connected with computer to get final product in addition, can automatically load after driver loads for the first time.
3, the utility model adopts and takes the formula tool design, and size only has the common U disk size, is easy to carry, adopt in addition USB directly to power, do not need extra power supply, more convenient practicality, and can also power to Micropower equipment by lead-in wire, solve gadget power taking problem.
4, the utility model is reasonable in design, easy to use, applicability is strong, and it is applied widely, is easy to promotion and implementation, has good economic benefit.
Description of drawings:
Fig. 1 is the logic diagram of the three-in-one converter of USB serial port;
Fig. 2 is the pinout figure of 4 cushion interfaces in Fig. 1;
Fig. 3 is the pinout figure of 9 cushion interfaces in Fig. 1.
Embodiment:
Embodiment: referring to Fig. 1-Fig. 3, in figure, 1--USB interface, 2--PL-2303HX chip, 3--RS232 chip, 4--RS485 chip, 5--4 cushion interface, 6--9 cushion interface.
The three-in-one converter of USB serial port contains PL-2303HX chip 2, wherein: the input end of PL-2303HX chip 2 is connected with usb 1, an output terminal of PL-2303HX chip 2 is connected with 4 cushion interfaces 5, its two other output terminal is connected with the input end that RS232 chip 3 is connected with the RS485 chip respectively, and RS232 chip 3 is connected output terminal and is connected with 9 cushion interfaces 6 with the RS485 chip.
4 cushion interfaces 5 are the 4 single 2.54mm spacing of pin interfaces, and four lead-in wires that arrange in it are respectively VDD, TXD, RXD and GND.
9 cushion interfaces 6 are DB9 computer standard 9 cushion interfaces, and wherein the 2nd, 3,5 pins are respectively RXD, TXD, the GND pin of RS232, and the 7th, 8 pins are respectively B-, the A+ pin of RS485.
The utility model adopts PL-2303HX chip 2 that the usb bus signal is converted to the UART-TTL signal, then uses RS232 and RS485 level transferring chip, and the UART-TTL signal is converted to needed RS232 and RS485 signal.Input interface is that the USB interface direct patches computer, is output as the single connector of standard 9 needle serial port connectors and 4 pin spacings 2.54.In conjunction with the universal driver of PL-2303HX, a virtual com port on computers, the operation of this com port and common operation of serial-port are in full accord.Fully compatible software all about operation of serial-port, the serial ports parameter that only needs to revise software virtual COM parameter for this reason gets final product, and is convenient and practical.
The utility model rolls into one three kinds of interface RS232, RS485 and UART-TTL, as long as module is inserted on the USB mouth of computing machine just can obtains above three kinds of bus interface, three interfaces do not conflict mutually, facilitate the user freely to use under three kinds of Different field buses, very practical to electronic product research and development and engineering staff.
Claims (3)
1. three-in-one converter of USB serial port, contain the PL-2303HX chip, it is characterized in that: the input end of described PL-2303HX chip is connected with USB interface, an output terminal of described PL-2303HX chip is connected with 4 cushion interfaces, its two other output terminal is connected respectively input end and is connected with the RS485 chip with the RS232 chip, described RS232 chip is connected with 9 cushion interfaces with the RS485 chip output.
2. the three-in-one converter of USB serial port according to claim 1, it is characterized in that: described 4 cushion interfaces are the 4 single 2.54mm spacing of pin interfaces, four lead-in wires that arrange in it are respectively VDD, TXD, RXD and GND.
3. the three-in-one converter of USB serial port according to claim 1, it is characterized in that: described 9 cushion interfaces are DB9 computer standard 9 cushion interfaces, wherein the 2nd, 3,5 pins are respectively RXD, TXD, the GND pin of RS232, and the 7th, 8 pins are respectively B-, the A+ pin of RS485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206432043U CN203012707U (en) | 2012-11-29 | 2012-11-29 | USB (Universal Serial Bus) serial port three-in-one converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206432043U CN203012707U (en) | 2012-11-29 | 2012-11-29 | USB (Universal Serial Bus) serial port three-in-one converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012707U true CN203012707U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206432043U Expired - Fee Related CN203012707U (en) | 2012-11-29 | 2012-11-29 | USB (Universal Serial Bus) serial port three-in-one converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103984661A (en) * | 2014-05-29 | 2014-08-13 | 国家电网公司 | Multifunctional debugging interface conversion device |
| CN105022711A (en) * | 2014-04-23 | 2015-11-04 | 林新辉 | serial bus communication architecture |
-
2012
- 2012-11-29 CN CN2012206432043U patent/CN203012707U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022711A (en) * | 2014-04-23 | 2015-11-04 | 林新辉 | serial bus communication architecture |
| CN103984661A (en) * | 2014-05-29 | 2014-08-13 | 国家电网公司 | Multifunctional debugging interface conversion device |
| CN103984661B (en) * | 2014-05-29 | 2017-03-01 | 国家电网公司 | A kind of Multifunctional debugging interface switching device |
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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 |
Granted publication date: 20130619 Termination date: 20171129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |