CN206178799U - RS485 and RS232 communication adaptive hardware circuit - Google Patents
RS485 and RS232 communication adaptive hardware circuit Download PDFInfo
- Publication number
- CN206178799U CN206178799U CN201620935747.0U CN201620935747U CN206178799U CN 206178799 U CN206178799 U CN 206178799U CN 201620935747 U CN201620935747 U CN 201620935747U CN 206178799 U CN206178799 U CN 206178799U
- Authority
- CN
- China
- Prior art keywords
- circuit
- interfaces
- switching circuit
- level shifting
- level
- 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.)
- Active
Links
Landscapes
- Communication Control (AREA)
Abstract
The application discloses a RS485 and RS232 communication adaptive hardware circuit, its circuit structure is simple, has realized two kinds of communication mode's of RS232 and RS485 automatic switch -over, and the shell that need not to open the controller just can carry out the selection of wire jumper, and the reliability is higher, and it is more convenient that the user uses. This kind of RS485 and RS232 communication adaptive hardware circuit, it includes microprocessor, switching circuit, RS232 level shifting circuit, RS232 interface, RS485 level shifting circuit, RS485 interface, wherein be connected through the switching circuit between RS232 level shifting circuit and the RS485 level shifting circuit, the switching circuit with microprocessor connects, communication data channel RS232 interface or RS485 interface are selected according to the height of level to the switching circuit.
Description
Technical field
The utility model belongs to the technical field of serial communication, more particularly to a kind of RS485 and RS232 communicates self adaptation
Hardware circuit.
Background technology
Existing serial ports RS232 and the connection between RS485 and microprocessor are corresponding to select by way of wire jumper
RS485 and RS232 data transmission channels, the method needs artificial operation, and its reliability is low, using dumb, and operates
When need to open the shell of controller to carry out the selection of wire jumper, bother very much when in use.
The content of the invention
The technical problems to be solved in the utility model is the defect for overcoming prior art, there is provided a kind of RS485 and RS232 leads to
The hardware circuit of self adaptation is interrogated, its circuit structure is simple, realizes two kinds of automatic switchovers of communication modes of RS232 and RS485, nothing
The shell that controller need to be opened can be carried out the selection of wire jumper, and reliability is higher, and it is more convenient that user uses.
The technical scheme for solving the above problems is：This RS485 and RS232 communicates the hardware circuit of self adaptation, and it includes
Microprocessor, switching circuit, RS232 level shifting circuits, RS232 interfaces, RS485 level shifting circuits, RS485 interfaces；Its
It is connected by switching circuit between middle RS232 level shifting circuits and RS485 level shifting circuits, the switching circuit and institute
Microprocessor connection is stated, the switching circuit selects communication data passage RS232 interfaces or RS485 to connect according to the height of level
Mouthful.
It is connected by switching circuit between the utility model RS232 level shifting circuits and RS485 level shifting circuits,
The switching circuit is connected with the microprocessor, and the switching circuit selects communication data passage according to the height of level
RS232 interfaces or RS485 interfaces, therefore circuit structure is simple, realizes the automatic of two kinds of communication modes of RS232 and RS485 and cuts
Change, the shell without opening controller can be carried out the selection of wire jumper, reliability is higher, it is more convenient that user uses.
Brief description of the drawings
Fig. 1 is RS485 of the present utility model and the circuit block diagram of the hardware circuit of RS232 communication self adaptations；
Fig. 2 be RS485 of the present utility model and one of switching circuit of the hardware circuit of RS232 communication self adaptations preferably
The schematic diagram of embodiment；
Fig. 3 is the circuit diagram of RS232 level shifting circuits in the utility model；
Fig. 4 is the circuit diagram of RS485 level shifting circuits in the utility model.
Specific embodiment
As shown in figure 1, this RS485 and RS232 communicates the hardware circuit of self adaptation, it includes microprocessor, switching electricity
Road, RS232 level shifting circuits, RS232 interfaces, RS485 level shifting circuits, RS485 interfaces；Wherein RS232 level conversions
It is connected by switching circuit between circuit and RS485 level shifting circuits, the switching circuit is connected with the microprocessor,
The switching circuit selects communication data passage RS232 interfaces or RS485 interfaces according to the height of level.
It is connected by switching circuit between the utility model RS232 level shifting circuits and RS485 level shifting circuits,
The switching circuit is connected with the microprocessor, and the switching circuit selects communication data passage according to the height of level
RS232 interfaces or RS485 interfaces, therefore circuit structure is simple, realizes the automatic of two kinds of communication modes of RS232 and RS485 and cuts
Change, the shell without opening controller can be carried out the selection of wire jumper, reliability is higher, it is more convenient that user uses.
In addition, as shown in Fig. 2 the switching circuit include SN74LVC08ADBR chips, when RS485 interfaces or RS232 connect
When mouth has request of data to transmit, corresponding RS232 interfaces or RS485 interfaces is selected to go forward side by side by SN74LVC08ADBR chips
Row data transfer.
The utility model realizes data receiver and sends automatic shunt by the design of logic circuit, so as to realize with for the moment
Carve and use a kind of communication modes.Its reliability is higher, and it is more convenient that user uses.Implementing the beneficial effects of the utility model is,
Circuit structure is simple, and two kinds of automatic switchovers of communication modes of RS232 and RS485 are realized by the logic judgment of circuit, without
Opening the shell of controller carries out the selection of wire jumper.
The above, is only preferred embodiment of the present utility model, and any formal limit is not made to the utility model
System.It will be apparent to an ordinarily skilled person in the art that every made according to technical spirit of the present utility model to above example
Any simple modification, equivalent variations and modification, still belong to the protection domain of technical solutions of the utility model.
Claims (2)
1. a kind of RS485 and RS232 communicates the hardware circuit of self adaptation, it is characterised in that：It includes microprocessor, switching electricity
Road, RS232 level shifting circuits, RS232 interfaces, RS485 level shifting circuits, RS485 interfaces；Wherein RS232 level conversions
It is connected by switching circuit between circuit and RS485 level shifting circuits, the switching circuit is connected with the microprocessor,
The switching circuit selects communication data passage RS232 interfaces or RS485 interfaces according to the height of level.
2. RS485 according to claim 1 and RS232 communicates the hardware circuit of self adaptation, it is characterised in that：The switching
Circuit includes SN74LVC08ADBR chips, when RS485 interfaces or RS232 interfaces have request of data to transmit, passes through
SN74LVC08ADBR chips select corresponding RS232 interfaces or RS485 interfaces and carry out data transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935747.0U CN206178799U (en) | 2016-08-24 | 2016-08-24 | RS485 and RS232 communication adaptive hardware circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935747.0U CN206178799U (en) | 2016-08-24 | 2016-08-24 | RS485 and RS232 communication adaptive hardware circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178799U true CN206178799U (en) | 2017-05-17 |
Family
ID=60240465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620935747.0U Active CN206178799U (en) | 2016-08-24 | 2016-08-24 | RS485 and RS232 communication adaptive hardware circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178799U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182166A (en) * | 2018-01-25 | 2018-06-19 | 深圳市朗仁科技有限公司 | Serial ports channel selection circuit and with its vehicular data acquisition box |
| CN109388600A (en) * | 2018-09-21 | 2019-02-26 | 深圳市亿威源科技有限公司 | Adaptive approach that is a kind of while supporting communication |
| CN110188061A (en) * | 2019-06-10 | 2019-08-30 | 上海乾申软件科技有限公司 | RS485 interface and RS232 interface automatic switch-over circuit and electronic equipment |
| CN110399326A (en) * | 2019-08-02 | 2019-11-01 | 沈阳民航东北凯亚有限公司 | A kind of data conversion equipment |
| CN112865984A (en) * | 2020-12-31 | 2021-05-28 | 深圳市共济科技股份有限公司 | Communication interface switching circuit and switching method thereof |
-
2016
- 2016-08-24 CN CN201620935747.0U patent/CN206178799U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108182166A (en) * | 2018-01-25 | 2018-06-19 | 深圳市朗仁科技有限公司 | Serial ports channel selection circuit and with its vehicular data acquisition box |
| CN109388600A (en) * | 2018-09-21 | 2019-02-26 | 深圳市亿威源科技有限公司 | Adaptive approach that is a kind of while supporting communication |
| CN109388600B (en) * | 2018-09-21 | 2022-10-18 | 深圳市亿威源科技有限公司 | Self-adaptive method for simultaneously supporting multiple communication modes |
| CN110188061A (en) * | 2019-06-10 | 2019-08-30 | 上海乾申软件科技有限公司 | RS485 interface and RS232 interface automatic switch-over circuit and electronic equipment |
| CN110399326A (en) * | 2019-08-02 | 2019-11-01 | 沈阳民航东北凯亚有限公司 | A kind of data conversion equipment |
| CN112865984A (en) * | 2020-12-31 | 2021-05-28 | 深圳市共济科技股份有限公司 | Communication interface switching circuit and switching method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206178799U (en) | RS485 and RS232 communication adaptive hardware circuit | |
| CN106383800A (en) | Intelligent serial interface equipment switching device and method | |
| CN206517411U (en) | A kind of dual-mode communication system wireless based on power line carrier and micropower | |
| CN203027245U (en) | RS232 and RS485 adaptive interface circuit | |
| CN107070445A (en) | A kind of serial communication interface function switching circuit and method | |
| CN205142257U (en) | 485 communication interface circuit of two compatible opto -couplers and control of three opto -couplers | |
| CN205648151U (en) | Touch switch is controlled in two accuses of single live wire more | |
| CN202374297U (en) | Serial port and Ethernet interface multiplexing structure | |
| CN202649998U (en) | RS232/RS485/RS422 comprehensive test interface circuit | |
| CN204839172U (en) | Water dispenser control system | |
| CN209044590U (en) | Multiple serial communication switching device | |
| CN203996287U (en) | The aobvious interface box of a kind of lamp of shunting | |
| CN201622783U (en) | LED module communication circuit and LED display screen | |
| CN209170052U (en) | A kind of multi-level communication conversion module that 10kV switch controller is embedded | |
| CN206178790U (en) | Serial communication port conversion equipment | |
| CN208127983U (en) | Two lines bus communicates fire-fighting emergency power supply | |
| CN203606824U (en) | Circuit achieving intelligent serial port multiplexing through multi-way switch | |
| CN102613929A (en) | Touch control type shower room | |
| CN202519750U (en) | Touch control shower room | |
| CN206948592U (en) | Multichannel for handling more radio signals inputs gates public address set circuit | |
| CN201467234U (en) | 485 communication circuit capable of automatically controlling transmitting and receiving | |
| CN205541403U (en) | Drive -by -wire ware power line carrier communication structure | |
| CN218212964U (en) | Improved RS485 serial port circuit of water quality multi-parameter online monitor | |
| CN206164537U (en) | Infrared transmission device of high -speed remote directional data | |
| CN206036646U (en) | LNG adds unibus controlling means of mechanism of qi multimachine interconnection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 644000 Building 9, Jinrun Industrial Park, Xuzhou District, Yibin City, Sichuan Province Patentee after: Sichuan Security Control Technology Co.,Ltd. Address before: 100095 building 6, yard 9, Dijin Road, Haidian District, Beijing Patentee before: BEIJING ECHO TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220926 Address after: Room 101-10, 4th Floor, Building 5, Yard 9, Dijin Road, Haidian District, Beijing 100089 Patentee after: BEIJING ETROL OIL AND GAS TECHNOLOGY Co.,Ltd. Address before: 644000 Building 9, Jinrun Industrial Park, Xuzhou District, Yibin City, Sichuan Province Patentee before: Sichuan Security Control Technology Co.,Ltd. |