CN206401674U - USB turns the miniature integrated connector of RS485 serial ports - Google Patents
USB turns the miniature integrated connector of RS485 serial ports Download PDFInfo
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- CN206401674U CN206401674U CN201621472650.7U CN201621472650U CN206401674U CN 206401674 U CN206401674 U CN 206401674U CN 201621472650 U CN201621472650 U CN 201621472650U CN 206401674 U CN206401674 U CN 206401674U
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- usb
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Abstract
Turn the miniature integrated connector of RS485 serial ports the utility model discloses USB, it is related to remote serial port signal communication interface field, the designing technique of communication interface and its connector more particularly, to high integration, including USB interface, USB turn RS485 serial ports conversion printed board, cable and 4 core connector interfaces composition.Usb signal is wherein transformed into the integrated design of rs 232 serial interface signal to USB connector end, it is output as 4 core plug wire modes, make whole connector construction more compact, physical size and more flexible output interface with very little, it can realize that usb signal is converted to RS485 signals, this more convenient user carries out the design and application of electronic equipment.
Description
Technical field
The invention belongs to remote serial port signal communication interface field, communication interface and its company more particularly, to high integration
Connect the designing technique of device.
Background technology
The common serial communication mode of electronic equipment has the standards such as RS485, in order to be programmed and debug to it,
Need electronic equipment being connected on computer, and the communication interface that computer is used is mostly USB USBs,
So, it is necessary to use the connection that can mutually change usb signal and RS485 serial signals between electronic equipment and computer
Device connects to realize communication.
Existing USB turns serial port connector and uses by conventional USB interface, cable, interface and be placed on interface
USB turn serial ports circuit board composition, its interface section is generally DB9 or binding post mode.
The subject matter of existing product be Interface Terminal in-convenience in use, if the form of binding post is, it is necessary to fixed；
If DB9 form, must be requested that the interface of the other end is also DB9.And in actual use, physical interface user is certainly
Oneself customizes, and particularly in the case where equipment volume requires less and less, the size of physical interface diminishes, and interface shape is different,
This just highlights the inconvenience that existing product is used.
USB using the present invention turns the miniature integrated connector of RS485 serial ports, and the USB change-over circuits for turning rs 232 serial interface signal are set
Miniature printed boards are counted into, USB interface end is positioned over, while the output port of connector only has 4 leads, the company of efficiently reducing
The physical size of device is connect, allows user can neatly selection port mode according to the design of oneself.
The content of the invention
Turn the miniature integrated connector of RS485 serial ports the invention provides a kind of USB, overcome the shortcoming of prior art presence
And deficiency, realize：(1) miniaturization of connector volume is realized, it is user-friendly；(2) connector interface part is 4 cores
Connector interface mode, with considerable flexibility.
The present invention the technical scheme used be：A kind of USB turns the miniature integrated connector of RS485 serial ports, in USB thing
Manage in interface basis, the conversion circuit part that usb signal turns rs 232 serial interface signal is designed to miniature printed boards, installed in USB company
Connect on device, and the output signal line of serial ports is directly led out, and provides the user the connector interface mode of 4 cores.Its implementation bag
Include：USB interface, USB turn RS485 serial ports conversion printed board, cable and RS485 connector interfaces.Described USB interface is used
USB-A types public affairs mouth, including four stitch (VCC, DM, DP, GND)；Described USB turns the integrated printed board of RS485 serial ports, including
Usb signal conversion UART signal chip, UART signal turn RS485 signal chips, respectively using FT232RL chips, SN75176 cores
Piece is realized；Described connector interface uses 4 core connector interfaces.
Beneficial effects of the present invention：
(1) USB is turned to the circuit design of rs 232 serial interface signal into miniature printed boards, USB interface end is placed on, with compared with
Small physical size, is user-friendly；
(2) because lead-out terminal is 4 core lead modes, it can directly be plugged on brassboard and carry out serial communication, also can be straight
Connected user-defined form of terminal and realize that the signal of USB to serial ports is changed, interface is with compatibility well and flexibly
Property.
Brief description of the drawings
Fig. 1 is design principle figure of the invention.
Fig. 2 is that USB turns RS485 serial ports integrated connector circuits.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, integrated conversion printed board, cable and 4 cores of the present invention by USB terminals, comprising IC1 and IC2 chips
Connector is constituted, and wherein USB terminals are the standard USB-A type male interfaces for meeting USB2.0 agreements, and the USB terminals are with calculating
The USB of machine is joined directly together；Turn the integrated conversion printed board of serial ports, described integrated turn in dashed box for the USB designed by the present invention
Printed board is changed on the USB terminals, comprising being responsible for usb signal being converted into the IC1 of UART signal, be responsible for turning UART signal
Change the IC2 of RS485 signals into；The IC1 selects FT232RL chips, and the IC2 selects SN75176 chips；RS485 serially believes
Number interface uses the core connector H2544-04 of Du Pont 4.
If Fig. 2 is the circuit theory diagrams of the present invention, DM and DP signals connect FT232RL cores respectively in described USB terminals
USBDM the and USBDP pins of piece, by R the and D pin phases of the RXD and TXD pins of FT232RL chips respectively with SN75176 chips
Connection, by SN75176'sIt is connected with DE while being connected with the CBUS2 in FT232RL.
The USB ends of connector are inserted to the USB of computer, the connection of 4 core connectors needs the electronic equipment communicated.Even
Connect will work as after device work computer need to electronic equipment send signal when, DM the and DP signals in the incoming USB of computer pass through
Chip FT232RL is converted to UART signal, and is placed in high level by signal CBUS2 is enabled, and chip SN75176 is placed in transmission
Working condition, RS485 signals are converted to by UART signal, then pass through the incoming electronic equipment for needing to communicate of 4 core connectors.Meter
Calculation machine sends enable signal CBUS2 after signal terminates and is placed in low level, and SN75176 works in reception state, works as electronic equipment
When needing to computer transmission signal, the RS485 signals that electronic equipment is sent are converted to UART signal by chip SN75176,
Usb signal is converted into by chip FT232RL and is sent to computer, realizes the two-way communication of computer and electronic equipment.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal implementation effect
Really, non-essential technical characteristic can be increased and decreased according to actual needs, to meet the demand of different situations.It is all without departing from skill of the present invention
The equivalent implementations or change that spirit is made should be included in the scope of the protection.
Claims (6)
1.USB turns the miniature integrated connector of RS485 serial ports, it is characterised in that including：USB terminals, include IC1 and IC2 chips
Integrated conversion printed board, cable and 4 core connectors；The USB terminals are USB-A type male interfaces；The integrated conversion printing
Plate is arranged on USB terminals, including is responsible for usb signal being converted into the IC1 of UART signal, is responsible for UART signal being converted into
The IC2 of RS485 signals；The 4 core connector uses 4 core connectors.
2. USB according to claim 1 turns the miniature integrated connector of RS485 serial ports, it is characterised in that the USB terminals
Meet USB2.0 consensus standards.
3. USB according to claim 1 turns the miniature integrated connector of RS485 serial ports, it is characterised in that the IC1 is used
FT232RL chips are realized.
4. USB according to claim 3 turns the miniature integrated connector of RS485 serial ports, it is characterised in that the IC2 is used
SN75176 chips are realized.
5. USB according to claim 4 turns the miniature integrated connector of RS485 serial ports, it is characterised in that the USB terminals
Middle DM and DP signals connect USBDM the and USBDP pins of FT232RL chips respectively；The RXD and TXD of the FT232RL chips draw
Pin is connected with R the and D pins of SN75176 chips respectively；CBUS2 in the FT232RL is respectively with SN75176'sWith
DE is connected.
6. USB according to claim 1 turns the miniature integrated connector of RS485 serial ports, it is characterised in that USB terminals make
Used time inserts the USB of computer；The 4 core connector connects the electronic equipment for needing to communicate when in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472650.7U CN206401674U (en) | 2016-12-30 | 2016-12-30 | USB turns the miniature integrated connector of RS485 serial ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472650.7U CN206401674U (en) | 2016-12-30 | 2016-12-30 | USB turns the miniature integrated connector of RS485 serial ports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206401674U true CN206401674U (en) | 2017-08-11 |
Family
ID=59517535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621472650.7U Expired - Fee Related CN206401674U (en) | 2016-12-30 | 2016-12-30 | USB turns the miniature integrated connector of RS485 serial ports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206401674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654769A (en) * | 2016-12-30 | 2017-05-10 | 江苏大学 | USB-to-RS485 serial port micro integration connector |
-
2016
- 2016-12-30 CN CN201621472650.7U patent/CN206401674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654769A (en) * | 2016-12-30 | 2017-05-10 | 江苏大学 | USB-to-RS485 serial port micro integration connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170811 Termination date: 20171230 |