CN220154916U - Circuit with USB port expanding multiple communication interfaces - Google Patents
Circuit with USB port expanding multiple communication interfaces Download PDFInfo
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- CN220154916U CN220154916U CN202321444237.XU CN202321444237U CN220154916U CN 220154916 U CN220154916 U CN 220154916U CN 202321444237 U CN202321444237 U CN 202321444237U CN 220154916 U CN220154916 U CN 220154916U
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- hub
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- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a circuit for expanding multiple communication interfaces of a USB port, which comprises: the USB interface input circuit is electrically connected with the HUB expansion circuit, and the HUB expansion circuit is electrically connected with at least two USB interface output circuits; the HUB expansion circuit is electrically connected with the USB-to-RS 232 circuit, and the USB-to-RS 232 circuit is electrically connected with the RS232 output interface circuit; the HUB expansion circuit is electrically connected with the USB-to-RJ 45 circuit, the USB-to-RJ 45 circuit is electrically connected with the network signal filter circuit, and the network signal filter circuit is electrically connected with the RJ45 output interface circuit. The usb input end is expanded into a plurality of usb output ends, rj45 network port ends and rs232 serial port ends, so that the USB interface is convenient to use.
Description
Technical Field
The utility model relates to the technical field of communication interface expansion circuits, in particular to a circuit with multiple communication interfaces expanded by USB ports.
Background
In developing and testing a multi-function project (e.g., a production line), it is often necessary to communicate with various control, execution portions of the apparatus. In the case of a complex device as a whole, different communication interface terminals, that is, different switching ports, need to be prepared in advance, and the pc/notebook itself as a test host is limited in interface.
The existing transfer module is generally an independent USB-to-RJ 45 interface, an independent USB-to-RS 232 interface and an independent USB-to-USB expansion multi-USB interface, so that the rapid expansion of a plurality of interfaces and a plurality of interfaces cannot be satisfied, the test and the deployment of equipment can be conveniently carried out,
accordingly, a need exists for a circuit for expanding a multi-communication interface for a USB port that addresses one or more of the above issues.
Disclosure of Invention
In order to solve one or more problems in the prior art, the utility model provides a circuit for expanding multiple communication interfaces through a USB port. The utility model adopts the technical proposal for solving the problems that: a circuit for expanding multiple communication interfaces at a USB port, comprising: the USB interface input circuit is electrically connected with the HUB expansion circuit, and the HUB expansion circuit is electrically connected with at least two USB interface output circuits;
the HUB expansion circuit is electrically connected with the USB-to-RS 232 circuit, and the USB-to-RS 232 circuit is electrically connected with the RS232 output interface circuit;
the HUB expansion circuit is electrically connected with the USB-to-RJ 45 circuit, the USB-to-RJ 45 circuit is electrically connected with the network signal filter circuit, and the network signal filter circuit is electrically connected with the RJ45 output interface circuit.
In some embodiments, the HUB expansion circuit comprises: the hub master control chip and the matched peripheral circuit.
In some embodiments, the USB to RS232 circuit comprises: the USB-to-serial port main control chip and a matched peripheral circuit.
In some embodiments, the USB to RJ45 circuit comprises: a USB network chip and a matched peripheral circuit.
The beneficial value obtained by the utility model is as follows: according to the utility model, the circuits are electrically connected together to form the USB expansion module, so that the expansion of the USB input end into a plurality of USB output ends, rj45 network port ends and rs232 serial port ends is realized. When the system is used, a single expansion module can realize the communication requirements of various formats in the whole project, so that the number of usb interfaces used by an upper computer end, the space occupied by modules and circuits are saved, and the system is very convenient to connect and use. The practical value of the utility model is greatly improved.
Drawings
FIG. 1 is a schematic block diagram of the present utility model;
fig. 2 is a schematic diagram of the present utility model.
[ reference numerals ]
1- & gt USB interface input circuit 10- & gt HUB expansion circuit
11 & ltUSB interface output circuit 12 & ltUSB interface output circuit
2 RS232 output interface circuit 20 USB to RS232 circuit
3 RJ45 output interface circuit 30 network signal filter circuit
4.USB to RJ45 circuit.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein without departing from the spirit or scope of the utility model as defined in the following claims.
As shown in fig. 1-2, the utility model discloses a circuit for expanding multiple communication interfaces of a USB port, which comprises: the USB interface input circuit 1, the said USB interface input circuit 1 is connected with HUB expanded circuit 10 electrically, the said HUB expanded circuit 10 is connected with at least two USB interface output circuits 11, 12 electrically;
the HUB expansion circuit 10 is electrically connected with the USB-to-RS 232 circuit 20, and the USB-to-RS 232 circuit 20 is electrically connected with the RS232 output interface circuit 2;
the HUB expansion circuit 10 is electrically connected with the USB-to-RJ 45 circuit 4, the USB-to-RJ 45 circuit 4 is electrically connected with the network signal filter circuit 30, and the network signal filter circuit 30 is electrically connected with the RJ45 output interface circuit 3.
As shown in fig. 2, the HUB extender circuit 10 includes: the hub main control chip and the matched peripheral circuit are U1 chip (model SL2.1A); the USB to RS232 circuit 20 includes: the USB-to-serial port main control chip and a matched peripheral circuit, namely a U3 chip (model CH 341T) in the figure; the USB-to-RJ 45 circuit 4 includes: a USB network chip and a matched peripheral circuit, i.e., a U2 chip (model RTL 8152B) in the figure. The corresponding USB data conversion function is realized through the chip and the peripheral circuits thereof, and the data is transmitted to the corresponding port.
In summary, the USB expansion module is formed by electrically connecting the circuits, so that the expansion of the USB input end into a plurality of USB output ends, rj45 network port ends and rs232 serial port ends is realized. When the system is used, a single expansion module can realize the communication requirements of various formats in the whole project, so that the number of usb interfaces used by an upper computer end, the space occupied by modules and circuits are saved, and the system is very convenient to connect and use.
The foregoing examples are merely representative of one or more embodiments of the present utility model and are described in more detail and are not to be construed as limiting the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (4)
1. The circuit for expanding the multiple communication interfaces of the USB port is characterized by comprising a USB interface input circuit, wherein the USB interface input circuit is electrically connected with a HUB (universal serial bus) expansion circuit, and the HUB expansion circuit is electrically connected with at least two USB interface output circuits;
the HUB expansion circuit is electrically connected with the USB-to-RS 232 circuit, and the USB-to-RS 232 circuit is electrically connected with the RS232 output interface circuit;
the HUB expansion circuit is electrically connected with the USB-to-RJ 45 circuit, the USB-to-RJ 45 circuit is electrically connected with the network signal filter circuit, and the network signal filter circuit is electrically connected with the RJ45 output interface circuit.
2. The circuit for expanding a multi-communication interface for a USB port according to claim 1, wherein the HUB expansion circuit comprises: the hub master control chip and the matched peripheral circuit.
3. The circuit for expanding a multi-communication interface with a USB port according to claim 1, wherein the USB-to-RS 232 circuit comprises: the USB-to-serial port main control chip and a matched peripheral circuit.
4. The circuit for expanding a multi-communication interface for a USB port according to claim 1, wherein the USB-to-RJ 45 circuit comprises: a USB network chip and a matched peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321444237.XU CN220154916U (en) | 2023-06-07 | 2023-06-07 | Circuit with USB port expanding multiple communication interfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321444237.XU CN220154916U (en) | 2023-06-07 | 2023-06-07 | Circuit with USB port expanding multiple communication interfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220154916U true CN220154916U (en) | 2023-12-08 |
Family
ID=89007469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321444237.XU Active CN220154916U (en) | 2023-06-07 | 2023-06-07 | Circuit with USB port expanding multiple communication interfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220154916U (en) |
-
2023
- 2023-06-07 CN CN202321444237.XU patent/CN220154916U/en active Active
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