CN207472991U - A kind of USB turns Multi-serial port test device - Google Patents
A kind of USB turns Multi-serial port test device Download PDFInfo
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- CN207472991U CN207472991U CN201721347149.2U CN201721347149U CN207472991U CN 207472991 U CN207472991 U CN 207472991U CN 201721347149 U CN201721347149 U CN 201721347149U CN 207472991 U CN207472991 U CN 207472991U
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Abstract
A kind of USB turns Multi-serial port test device, belongs to the circuit device technical field of track transportation industry.Usb circuit connects conversion circuit, conversion circuit interface channel selection circuit, a switch is selected in channel selection circuit connection four, four select a switch to connect serial port circuit, four select a switch to connect TTL interface circuits, RS232 interface circuit, RS485 interface circuits and electric current loop interface circuit respectively, and the output of TTL interface circuits, RS232 interface circuit, RS485 interface circuits and electric current loop interface circuit connects tested device respectively.The utility model has the advantages that providing the test equipment that USB turns current ring communication, meets the needs of debugging test.
Description
Technical field
The utility model is related to a kind of USB to turn Multi-serial port test device, belongs to the circuit device technology of track transportation industry
Field.
Background technology
EMU broadcast system host, also known as automatic broadcaster, referred to as AAD are entire EMU broadcast systems
Master controller mainly carries out data interaction with train other equipment with a variety of serial modes such as electric current loop, RS485, RS232.
The links such as research and development, debugging, the test of product, need by USB turn serial ports tool realize computer communicate with the data of AAD, USB
Turn Multi-serial port test cell and provide perfect solution thus.
The USB to circulate on the market turns serial port module can only support one kind in RS485, RS232, TTL serial communication mostly
Or two kinds, also no USB turn the test equipment of current ring communication, it is impossible to meet debugging test the needs of.
Invention content
For overcome the deficiencies in the prior art, the utility model provides a kind of USB and turns Multi-serial port test device.
A kind of USB turns Multi-serial port test device, including：Usb circuit, conversion circuit, channel selection circuit, serial port power
Lu Gongsi parts, usb circuit connection conversion circuit, conversion circuit interface channel selection circuit, channel selection circuit connection
Four select a switch, and four select a switch to connect serial port circuit, and four select a switch to connect TTL interface circuits, RS232 interface electricity respectively
Road, RS485 interface circuits and electric current loop interface circuit, TTL interface circuits, RS232 interface circuit, RS485 interface circuits and electricity
The output of stream ring interface circuit connects tested device respectively.
Usb circuit connection USB turns Multi-serial port test cell.Serial port circuit includes TTL interface circuits, RS232 interface
Circuit, RS485 interface circuits and electric current loop interface circuit, serial port circuit connect the correspondence serial port circuit of device being tested.
The utility model has the advantages that providing the test equipment that USB turns current ring communication, meets the needs of debugging test.
Description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, it can more completely more fully understand that this practicality is new
Type and easily learn many of which with the advantages of, but attached drawing described herein is used for providing to the utility model into one
Step understands, forms the part of the utility model, and the illustrative embodiments and their description of the utility model are used to explain this practicality
It is novel, the improper restriction to the utility model is not formed, is such as schemed wherein：
Fig. 1 is the structure diagram of the utility model.
The utility model is further illustrated with reference to the accompanying drawings and examples.
Specific embodiment
Obviously, many modifications and variations that objective of the those skilled in the art based on the utility model is done belong to this practicality
Novel protection domain.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that it is used in the specification of the utility model
Wording " comprising " refer to there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or
Other one or more features of addition, integer, step, operation, element, component and/or their group.It should be understood that when claiming member
When part, component are "connected" to another element, component, it can be directly connected to other elements either component or can also
There are intermediary element or components.Wording "and/or" used herein includes appointing for one or more associated list items
Unit one and all combination.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein are (including technology art
Language and scientific terminology) there is the meaning identical with the general understanding of the those of ordinary skill in fields.
Embodiment 1：As shown in Figure 1, a kind of USB turns Multi-serial port test device, including：Usb circuit 1, conversion circuit
3rd, totally four parts, usb circuit 1 connect conversion circuit 3,3 interface channel of conversion circuit for channel selection circuit 4, serial port circuit 2
A switch 9 is selected in selection circuit 4, the connection of channel selection circuit 4 four, and four select a switch 9 to connect serial port circuit 2, and four select a switch 9 to divide
Not Lian Jie TTL interface circuits 5, RS232 interface circuit 7, RS485 interface circuits 8 and electric current loop interface circuit 6, TTL interface circuits
5th, the output of RS232 interface circuit 7, RS485 interface circuits 8 and electric current loop interface circuit 6 connects tested device respectively.
Usb circuit 1 turns Multi-serial port test cell for entire USB and provides working power, while realize and calculated with external
The usb communication of machine.
Conversion circuit 3 realizes conversion of the USB interface to serial UART interface.
Channel selection circuit 4 selects a switch 9 by external four, realize with TTL interface circuits 5, RS232 interface circuit 7,
One kind in RS485 interface circuits 8, electric current loop interface circuit 6 is connected with conversion circuit 3, so as to fulfill usb circuit 1 and
It is chosen the conversion of serial port circuit 2.
Serial port circuit 2 includes TTL interface circuits 5, RS232 interface circuit 7, RS485 interface circuits 8 and electric current ring interface electricity
Road 6 realizes serial ports type corresponding with device being tested into row data communication.
By conversion circuit 3 realize USB interface arrive serial UART interface conversion, by channel selection circuit realization TTL,
The communication four selected one, turn a variety of serial ports so as to fulfill USB of RS232, RS485, electric current loop serial port circuit.
AAD：Automatic broadcaster；USB：Universal serial bus；UART：Universal asynchronous receiving-transmitting transmitter.
As described above, the embodiment to the utility model is explained in detail, as long as but essentially without disengaging
The inventive point and effect of the utility model can have many deformations, this is apparent to one skilled in the art
's.Therefore, such variation is also integrally incorporated within the scope of protection of the utility model.
Claims (3)
1. a kind of USB turns Multi-serial port test device, it is characterised in that including：Usb circuit, conversion circuit, channel selecting electricity
Totally four parts, usb circuit connect conversion circuit, conversion circuit interface channel selection circuit, channel selecting for road, serial port circuit
A switch is selected in circuit connection four, and four select a switch to connect serial port circuit, and four select a switch to connect TTL interface circuits, RS232 respectively
Interface circuit, RS485 interface circuits and electric current loop interface circuit, TTL interface circuits, RS232 interface circuit, RS485 interfaces electricity
The output of road and electric current loop interface circuit connects tested device respectively.
2. a kind of USB according to claim 1 turns Multi-serial port test device, it is characterised in that usb circuit connects USB
Turn Multi-serial port test cell.
3. a kind of USB according to claim 1 turns Multi-serial port test device, it is characterised in that serial port circuit connects including TTL
Mouth circuit, RS232 interface circuit, RS485 interface circuits and electric current loop interface circuit, serial port circuit connect pair of device being tested
Answer serial port circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721347149.2U CN207472991U (en) | 2017-10-19 | 2017-10-19 | A kind of USB turns Multi-serial port test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721347149.2U CN207472991U (en) | 2017-10-19 | 2017-10-19 | A kind of USB turns Multi-serial port test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207472991U true CN207472991U (en) | 2018-06-08 |
Family
ID=62267122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721347149.2U Active CN207472991U (en) | 2017-10-19 | 2017-10-19 | A kind of USB turns Multi-serial port test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207472991U (en) |
-
2017
- 2017-10-19 CN CN201721347149.2U patent/CN207472991U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230120 Address after: 100000 Room 605, Gate E, Building 201, Yard A 10, Jiuxianqiao North Road, Chaoyang District, Beijing Patentee after: BEIJING WAYCOM CENTURY TECHNOLOGY Co.,Ltd. Address before: Floor 4, Building 8, Yard 30, Yuhua Road, Airport Economic Core Zone, Shunyi District, Beijing, 101318 Patentee before: BEIJING HUACHUANG ZHISHENG TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |