CN206584349U - A kind of intelligent usb hub circuit - Google Patents
A kind of intelligent usb hub circuit Download PDFInfo
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- CN206584349U CN206584349U CN201720222159.7U CN201720222159U CN206584349U CN 206584349 U CN206584349 U CN 206584349U CN 201720222159 U CN201720222159 U CN 201720222159U CN 206584349 U CN206584349 U CN 206584349U
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- usb
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- usb hub
- test system
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Abstract
The utility model is related to a kind of intelligent usb hub circuit, hub circuit includes usb hub protocol integrated test system chip, USB device control chip and multichannel relay drive unit U, the usb hub protocol integrated test system chip is set up with main control computer by uplink port and is connected, and a port of main control computer is expanded into seven downlink ports, respectively down going channel port1 port7, and be connected the port7 of usb hub protocol integrated test system chip with the input channel of USB device control chip, remaining 6 passages are used for connecting other USB external equipments, usb hub protocol integrated test system chip all includes VCC wiring per Single port, D+ wiring, D wiring and GND wiring, the intelligent usb hub of the utility model design can recognize the automatic USB external equipments for disconnecting or connecting insertion of instruction that main control computer is sent, it is safe and reliable, preferably promote the use of.
Description
Technical field
The utility model is related to circuitry field, more particularly to a kind of intelligent usb hub circuit.
Background technology
USB (Universal Serial Bus) is the technology of serial communication mark for connecting computer system and external equipment
Standard, is also a kind of technical specification of input/output interface.Usb bus technical specification from initial 1.0,2.0 till now
3.0, highest theory communication speed is full duplex 5Gbps.Have benefited from good compatibility and high speed transmission abilities, usb bus
Technology is widely used in the external expansion interface of PC and mobile device.Under this background, connected by usb bus
The external equipment for being connected to a main control terminal is more and more.Due to usb bus technical specification overall power energy power restriction or some
The particular requirement of special USB external equipments, user needs do not make some USB external equipments and master control optionally in the same time
Equipment is set up or disconnected.For example, when connecting multiple mobile hard disks simultaneously on same usb hub, USB set can be caused
Line device uplink port electricity shortage；When synchronization connects multiple similar encryption Ukey on the same computer, it may go out
Now encrypt abnormal.Under existence conditions, realize that selectively connecting the USB external equipments being inserted on port is required for manual behaviour
Make, it is impossible to control instruction is sent by Host Technology and realized automatically.This causes some to need to use multiple USB external equipments in turn
Business can not perform automatically, can only in a semi-autonomous manner be performed under manual intervention.
Utility model content
The purpose of this utility model is to provide a kind of intelligent usb hub circuit, to solve above-mentioned technical problem, is real
Existing above-mentioned purpose the utility model uses following technical scheme：
A kind of intelligent usb hub circuit, hub circuit includes usb hub protocol integrated test system chip, USB device and controlled
Chip and multichannel relay drive unit U, the usb hub protocol integrated test system chip pass through uplink port and main control computer
Connection is set up, and a port of main control computer is expanded into seven downlink ports, respectively down going channel port1-
Port7, and the port7 of usb hub protocol integrated test system chip is connected with the input channel of USB device control chip, it is remaining 6
Passage is used for connecting other USB external equipments, and each downlink port of usb hub protocol integrated test system chip all connects including VCC
Line, D+ wiring, D- wiring and GND wiring, VCC wiring are connected with the photoelectrical coupler in multichannel relay drive unit U,
GND wiring is grounded, and D+ wiring and D- wiring connect positive and negative 5V power supplys respectively, and the USB device control chip sets an input
Mouth and one group of downlink port, input port also includes VCC wiring, D+ wiring, D- wiring and GND wiring, respectively with usb hub
The downlink port correspondence of protocol integrated test system chip, one group of downlink port includes 8 position datawires, respectively down going channel D0-D7, wherein
Down going channel D1-D6 is connected with six multichannel relay drive unit U respectively, and the multichannel relay drive unit U is same
When be connected with USB device control chip and usb hub protocol integrated test system chip port wiring, six multichannel relay driving lists
Resistance R2 in first U is connected with the down going channel D1-D6 of USB device control chip respectively, resistance R2 and transistor VT base stage
Connection, transistor VT emitter stage is connected through resistance R3 with port, while transistor VT grounded emitter, transistor VT collection
Electrode connects photoelectrical coupler, and photoelectrical coupler connects power supply through resistance R1, while photoelectrical coupler and usb hub protocol integrated test system core
The port connection connection of piece.
On the basis of above-mentioned technical proposal, the usb hub protocol integrated test system chip controls core using TUSB2077A types
Piece, the USB device control chip uses SL811HS type USB device protocol integrated test system chips, and the photoelectrical coupler is used
EL3051 type dual-inline package photoelectrical couplers.
The utility model makes usb hub possess the ability with main control computer Direct Communication, can be led to by main control computer
Cross and send the commands to connect or disconnect the USB device that is inserted into each port, realize without the connection of manually operated directly selecting property
The USB external equipments on port are inserted into, this enables some to need to hold automatically using the business of multiple USB external equipments in turn
OK, without manual intervention, artificial operation is substantially reduced.
Brief description of the drawings
Fig. 1 is block diagram of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
Embodiment
The utility model is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
A kind of intelligent usb hub circuit, hub circuit includes usb hub protocol integrated test system chip, USB device and controlled
Chip and multichannel relay drive unit U, the usb hub protocol integrated test system chip pass through uplink port and main control computer
Connection is set up, and a port of main control computer is expanded into seven downlink ports, respectively down going channel port1-
Port7, and the port7 of usb hub protocol integrated test system chip is connected with the input channel of USB device control chip, it is remaining 6
Passage is used for connecting other USB external equipments, and each downlink port of usb hub protocol integrated test system chip all connects including VCC
Line, D+ wiring, D- wiring and GND wiring, VCC wiring are connected with the photoelectrical coupler in multichannel relay drive unit U,
GND wiring is grounded, and D+ wiring and D- wiring connect positive and negative 5V power supplys respectively, and the USB device control chip sets an input
Mouth and one group of downlink port, input port also includes VCC wiring, D+ wiring, D- wiring and GND wiring, respectively with usb hub
The downlink port correspondence of protocol integrated test system chip, one group of downlink port includes 8 position datawires, respectively down going channel D0-D7, wherein
Down going channel D1-D6 is connected with six multichannel relay drive unit U respectively, and the multichannel relay drive unit U is same
When be connected with USB device control chip and usb hub protocol integrated test system chip port wiring, six multichannel relay driving lists
Resistance R2 in first U is connected with the down going channel D1-D6 of USB device control chip respectively, resistance R2 and transistor VT base stage
Connection, transistor VT emitter stage is connected through resistance R3 with port, while transistor VT grounded emitter, transistor VT collection
Electrode connects photoelectrical coupler, and photoelectrical coupler connects power supply through resistance R1, while photoelectrical coupler and usb hub protocol integrated test system core
The port connection connection of piece.
The usb hub protocol integrated test system chip uses TUSB2077A type control chips, the USB device control chip
Using SL811HS type USB device protocol integrated test system chips, the photoelectrical coupler uses EL3051 type dual-inline package photoelectricity
Coupler.
The hub circuit of the utility model design, when main control computer sends instruction, usb hub protocol integrated test system chip
Instruction is received, multichannel relay drive unit U is controlled by USB device control chip, and then control usb hub agreement control
Chip port power on/off processed, so as to reach the purpose that USB interface break-make is controlled by main control computer.
Described above is the utility model preferred embodiment, for the ordinary skill in the art, according to this reality
With new teaching, in the case where not departing from principle of the present utility model and spirit, the change that is carried out to embodiment, repair
Change, replace and modification is still fallen within protection domain of the present utility model.
Claims (2)
1. a kind of intelligent usb hub circuit, it is characterised in that hub circuit include usb hub protocol integrated test system chip,
USB device control chip and multichannel relay drive unit U, the usb hub protocol integrated test system chip pass through uplink port
Set up and be connected with main control computer, and a port of main control computer is expanded into seven downlink ports, it is respectively descending logical
Road port1-port7, and the input channel of the port7 of usb hub protocol integrated test system chip and USB device control chip is connected
Connect, remaining 6 passages are used for connecting other USB external equipments, and each downlink port of usb hub protocol integrated test system chip is all
Including VCC wiring, D+ wiring, D- wiring and GND wiring, VCC wiring and the photoelectric coupling in multichannel relay drive unit U
Device is connected, GND wiring ground connection, and D+ wiring and D- wiring connect positive and negative 5V power supplys respectively, and the USB device control chip sets one
Input port and one group of downlink port, input port also include VCC wiring, D+ wiring, D- wiring and GND wiring, respectively with USB
The downlink port correspondence of hub protocol control chip, one group of downlink port includes 8 position datawires, respectively down going channel D0-
D7, wherein down going channel D1-D6 are connected with six multichannel relay drive unit U respectively, the multichannel relay driving
Unit U is connected with USB device control chip and usb hub protocol integrated test system chip port wiring simultaneously, six multichannel relays
Resistance R2 in device driver element U is connected with the down going channel D1-D6 of USB device control chip respectively, resistance R2 and transistor
VT base stage connection, transistor VT emitter stage is connected through resistance R3 with port, while transistor VT grounded emitter, crystal
Pipe VT colelctor electrode connects photoelectrical coupler, and photoelectrical coupler connects power supply through resistance R1, while photoelectrical coupler is assisted with usb hub
Discuss the port connection connection of control chip.
2. a kind of intelligent usb hub circuit according to claim 1, it is characterised in that the usb hub agreement control
Coremaking piece uses TUSB2077A type control chips, and the USB device control chip uses SL811HS type USB device protocol integrated test systems
Chip, the photoelectrical coupler uses EL3051 type dual-inline package photoelectrical couplers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222159.7U CN206584349U (en) | 2017-03-09 | 2017-03-09 | A kind of intelligent usb hub circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222159.7U CN206584349U (en) | 2017-03-09 | 2017-03-09 | A kind of intelligent usb hub circuit |
Publications (1)
| Publication Number | Publication Date |
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| CN206584349U true CN206584349U (en) | 2017-10-24 |
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ID=60111681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720222159.7U Active CN206584349U (en) | 2017-03-09 | 2017-03-09 | A kind of intelligent usb hub circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206584349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708772A (en) * | 2017-03-09 | 2017-05-24 | 海南众合天下科技有限公司 | Intelligent USB concentrator |
-
2017
- 2017-03-09 CN CN201720222159.7U patent/CN206584349U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708772A (en) * | 2017-03-09 | 2017-05-24 | 海南众合天下科技有限公司 | Intelligent USB concentrator |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 571924 1st Floor, Building 8813, Hainan Ecological Software Park, Old Town, Chengmai County, Hainan Province Patentee after: HAINAN ZHONGHE TIANXIA TECHNOLOGY CO.,LTD. Address before: 571923 Hainan Ecological Software Park, Old Town Hi tech Industry Demonstration Zone, Chengmai County, Hainan Province Patentee before: HAINAN ZHONGHE TIANXIA TECHNOLOGY CO.,LTD. |