CN204578559U - A kind of four road RS232 serial ports routers - Google Patents
A kind of four road RS232 serial ports routers Download PDFInfo
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- CN204578559U CN204578559U CN201520303334.6U CN201520303334U CN204578559U CN 204578559 U CN204578559 U CN 204578559U CN 201520303334 U CN201520303334 U CN 201520303334U CN 204578559 U CN204578559 U CN 204578559U
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Abstract
The utility model discloses a kind of four road RS232 serial ports routers, comprise: housing, it is characterized in that: in described housing, be provided with single-chip microcomputer, cache module, power module, input and output serial ports, described single-chip microcomputer is connected with cache module, power module and input and output serial ports and the above-mentioned module of master control respectively, and power module is connected with single-chip microcomputer and cache module powers.The utility model is by adopting the switching of Single-chip Controlling input and output serial ports, the version of cache module buffer memory signal to be sent, without the need to transforming main frame or resetting, and under the prerequisite of not accessing Internet, achieve the object of a pair four full-duplex communications of serial ports, simplify the connection of one-to-many serial ports, save improvement cost, improve data transmission quality and efficiency simultaneously.The utility model structure is simple, and easy to use, plug and play realizes full duplex a pair four communications.
Description
Technical field
The utility model relates to a kind of router, particularly a kind of four road RS232 serial ports routers.
Background technology
RS232 serial ports has a wide range of applications in Power telecontrol system, RS232 standard is a kind of conventional point-to-point communication standard, in order to realize the one-to-many communication of serial ports, existing scheme comprises the multichannel serial adapter of manual gating, and needs the one-to-many serial hub of external power supply.In some engineering, main control end needs to receive the information from each road while sending information to multiple terminal, and manual adapter cannot realize this function, and the external power supply required for serial hub can be made troubles to construction.Within 2000, International Electrotechnical Commission has promulgated IEC60870-5-104 stipulations, define the combination of the transfer function that the application layer of IEC60870-5-101 and TCP/IP provide, make multiple stage realize direct one-to-many based on plant stand end and the main website end of 104 stipulations and communicate and become possibility.
In some data acquisition system, often can adopt primary and secondary structure, master board needs and multi-block data collection plate carry out data interaction; namely one-to-many communication is realized; in these application scenarios, install together with master board abuts against with multi-block data collection plate, communication distance is nearer.Traditional solution is by CAN mode or is transferred by keyset, realize one-to-many communication, but CAN relative complex, need single-chip microcomputer to support CAN interface simultaneously, but have very most of single-chip microcomputer there is no CAN interface, therefore CAN interface scheme does not have versatility; And adopting keyset scheme to need extra software and hardware support, system complexity rises, and cost also increases, neither the best approach.Adopt RS485 interface to carry out transfer of data to be then generally applied on long range propagation, and the RS485 interface transmission means of standard is half-duplex, can not accept simultaneously and send data, improper in high speed data transfer occasion, RS485 interface transmission means neither preferred plan.Once someone proposed to utilize RS232 Interface realization one-to-many data transmission method, but needed special drive circuit, and traffic rate is lower, is not suitable for high speed data transfer occasion.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, easy to use, and plug and play realizes four road RS232 serial ports routers of full duplex a pair four communication.
Realize above-mentioned purpose, the technical scheme that the utility model adopts is: a kind of four road RS232 serial ports routers, comprise: housing, it is characterized in that: in described housing, be provided with single-chip microcomputer, cache module, power module, input and output serial ports, described single-chip microcomputer is connected with cache module, power module and input and output serial ports and the above-mentioned module of master control respectively, and power module is connected with single-chip microcomputer and cache module powers.
Preferably, described input and output serial ports quantity is five, and a serial ports is connected with main website, and other four serial ports are connected with substation serial ports.
Preferably, the data communication baud rate of described single-chip microcomputer is 300 ~ 115200Bd.
Preferably, described power module is provided with voltage conversion circuit.
After the utility model adopts said structure, by adopting the switching of Single-chip Controlling input and output serial ports, the version of cache module buffer memory signal to be sent, without the need to transforming main frame or resetting, and under the prerequisite of not accessing Internet, achieve the object of a pair four full-duplex communications of serial ports, simplify the connection of one-to-many serial ports, save improvement cost, improve data transmission quality and efficiency simultaneously.The utility model structure is simple, and easy to use, plug and play realizes full duplex a pair four communications.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Symbol description in figure: 1, housing, 2, single-chip microcomputer, 3, cache module, 4, power module, 5, input and output serial ports.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in the figure, for achieving the above object, the technical scheme that the utility model adopts is: a kind of four road RS232 serial ports routers, comprise: housing 1, it is characterized in that: in described housing 1, be provided with single-chip microcomputer 2, cache module 3, power module 4, input and output serial ports 5, described single-chip microcomputer 2 is connected with cache module 3, power module 4 and input and output serial ports 5 and the above-mentioned module of master control respectively, and power module 4 is connected with single-chip microcomputer 2 and cache module 3 powers.
Preferably, described input and output serial ports 5 quantity is five, and a serial ports is connected with main website, and other four serial ports are connected with substation serial ports.
Preferably, the data communication baud rate of described single-chip microcomputer 2 is 300 ~ 115200Bd.
Preferably, described power module 4 is provided with voltage conversion circuit.
Embodiment:
In actual applications, input voltage is converted to other voltage required for each module by power module 4, input and output serial ports 5 is for receiving and sending rs 232 serial interface signal, single-chip microcomputer 2 detects the signal of four road interfaces and the corresponding passage of control simulation switch opens, the destination address of judgement information is also forwarded, thus realizes the one-to-many communication of RS232 serial ports.For the signal that substation serial ports sends, adopt and arrive first the strategy first passed, if other substation serial ports also send when a certain road sends, then the signal of rear transmission is saved to cache module 3, send after waiting channel completely idle.For the signal that main website serial ports sends, single-chip microcomputer 2 is forwarded to the one or more substation serial ports to answering after judging its destination address.
The above is preferred implementation of the present utility model; certainly the interest field of the utility model can not be limited with this; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or equivalent replacement, do not depart from the protection range of technical solutions of the utility model.
Claims (4)
1. a road RS232 serial ports router, comprise: housing (1), it is characterized in that: in described housing (1), be provided with single-chip microcomputer (2), cache module (3), power module (4), input and output serial ports (5), described single-chip microcomputer (2) is connected with cache module (3), power module (4) and input and output serial ports (5) and the above-mentioned module of master control respectively, and power module (4) is connected with single-chip microcomputer (2) and cache module (3) powers.
2. a kind of four road RS232 serial ports routers according to claim 1, it is characterized in that: described input and output serial ports (5) quantity is five, and a serial ports is connected with main website, other four serial ports are connected with substation serial ports.
3. a kind of four road RS232 serial ports routers according to claim 1, is characterized in that: the data communication baud rate of described single-chip microcomputer (2) is 300 ~ 115200Bd.
4. a kind of four road RS232 serial ports routers according to claim 1, is characterized in that: described power module (4) is provided with voltage conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303334.6U CN204578559U (en) | 2015-05-12 | 2015-05-12 | A kind of four road RS232 serial ports routers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303334.6U CN204578559U (en) | 2015-05-12 | 2015-05-12 | A kind of four road RS232 serial ports routers |
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| Publication Number | Publication Date |
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| CN204578559U true CN204578559U (en) | 2015-08-19 |
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| CN201520303334.6U Active CN204578559U (en) | 2015-05-12 | 2015-05-12 | A kind of four road RS232 serial ports routers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112948301A (en) * | 2021-02-25 | 2021-06-11 | 浪潮电子信息产业股份有限公司 | Multifunctional conversion interface device |
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2015
- 2015-05-12 CN CN201520303334.6U patent/CN204578559U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112948301A (en) * | 2021-02-25 | 2021-06-11 | 浪潮电子信息产业股份有限公司 | Multifunctional conversion interface device |
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