CN105426334A - Parallel type large-scale USB extension device, working method and system - Google Patents
Parallel type large-scale USB extension device, working method and system Download PDFInfo
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- CN105426334A CN105426334A CN201510998417.6A CN201510998417A CN105426334A CN 105426334 A CN105426334 A CN 105426334A CN 201510998417 A CN201510998417 A CN 201510998417A CN 105426334 A CN105426334 A CN 105426334A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G06Q10/10—Office automation; Time management
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The invention relates to a parallel type large-scale USB extension device, a working method and a system. The parallel type large-scale USB extension device comprises a plurality of USB extension boards, wherein each USB extension board is provided with a main USB bus interface, an auxiliary USB bus interface, a main communication interface, an auxiliary communication interface and a power interface and is connected with an upper computer through the main USB bus interface, the main communication interface and the power interface; the USB extension boards are further suitable for being mutually connected through the main and auxiliary USB bus interfaces and mutually connected through the main and auxiliary communication interfaces and the power interfaces so as to realize data transmission and communication connection among the USB extension boards. The USB extension boards of the parallel type large-scale USB extension device adopt the same structure, good interchangeability is realized, a plurality of USB interfaces can be extended, besides, manpower and equipment loss required by repeated insertion and extraction of equipment can be reduced, efficient office automation is facilitated, the operation is simple, the use is convenient, and the maintenance cost is low.
Description
Technical field
The present invention relates to a kind of usb expansion device, particularly relate to a kind of parallel extensive usb expansion device and method of work, system.
Background technology
At present some industry more and more pursues efficient office automation, when having some external USB equipment, if can efficiently and control each equipment exactly, will increase work efficiency widely.And traditional usb expansion device still needs switch manually, consume a large amount of manpower and materials, repeatedly plug simultaneously and also can cause loss to equipment, a period of time just will upgrade some hardware device.Traditional usb expansion device expansion negligible amounts, and well cannot control each USB port, the extensive expansion of equipment can not be met.
Summary of the invention
The object of this invention is to provide a kind of parallel extensive usb expansion device and method of work, system, to realize effectively managing USB device, improve the degree of office automation, reduce manual work's amount and equipment loss cost.
In order to solve the problems of the technologies described above, the invention provides a kind of parallel extensive usb expansion device, comprise: some usb expansion plates, each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave, and is connected with host computer by main usb bus interface, main communication and power interface; And be also suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
Further, described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module; Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
Further, described expanding element is several, and adopts parallel access usb bus; Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay; Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.
Further, described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And the USB management database that each port coding, device coding are sent in host computer by communication module is stored; When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module.
Further, expansion board coding is set for the processor module in each usb expansion plate, and is sent to USB management database by described communication module and stores; The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database; When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
Another aspect, present invention also offers a kind of parallel extensive expanding system based on usb bus, it comprises: described parallel extensive usb expansion device.
The third aspect, present invention also offers a kind of method of work of parallel extensive usb expansion device.
Described parallel extensive usb expansion device comprises: some usb expansion plates, and each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave; Described method of work comprises: be connected with host computer by main usb bus interface, main communication and power interface; And be also suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
Further, described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module; Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
Further, described expanding element is several, and adopts parallel access usb bus; Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay; Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.
Further, described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And the USB management database that each port coding, device coding are sent in host computer by communication module is stored; When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module; Further, expansion board coding is set for the processor module in each usb expansion plate, and is sent to USB management database by described communication module and stores; The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database; When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
The invention has the beneficial effects as follows, in parallel extensive usb expansion device of the present invention, each usb expansion plate adopts same structure, there is good interchangeability, a large amount of USB port can be expanded, each USB port has a fixed number, can by the corresponding USB port of PC control or USB device gating or closedown; Disposablely extend some external units, these equipment can be arranged in expansion board for a long time, reduce the manpower repeatedly needed for swappable device and equipment loss, and be conducive to realizing efficient office automation, simple to operate, easy to use, maintenance cost is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the theory diagram of expansion board of the present invention;
Fig. 2 is the structural representation of expansion board of the present invention;
Fig. 3 is the concrete schematic diagram of expanding element of the present invention;
In figure, main usb bus interface 1, main communication and power interface 2, from usb bus interface 3, from communication and power interface 4, panel 5, USB port 6, fixed orifice 7.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment 1
As shown in Figure 1 to Figure 3, the present embodiment 1 provides a kind of parallel extensive usb expansion device, comprise: some usb expansion plates, each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave, and is connected with host computer by main usb bus interface, main communication and power interface; And be also suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
Wherein, described communication and power interface are a kind of interface mode that communication interface combines with power interface, can ensure that data communication also can ensure the power supply supply of each usb expansion plate.
From usb expansion intralamellar part structure, described master and slave usb bus interface is drawn from usb bus respectively, and in master and slave communication and power interface, communication interface connects communication module.
As depicted in figs. 1 and 2, concrete, for the ease of understanding, usb bus interface, communication and power interface are in FIG respectively with master and slave usb bus interface, and master and slave communication and power interface represent.
First block of usb expansion plate accesses host computer by main usb bus interface 1, and connects host computer and power supply by main communication and power interface 2; Meanwhile, by from usb bus interface 3, from communication and power interface 4 be connected with the main usb bus interface of second block of usb expansion plate, main communication and power interface, in like manner, connect each usb expansion version successively.
Described master and slave communication and power interface, master and slave usb bus interface is arranged on usb expansion plate side, and the panel 5 of usb expansion plate is provided with some USB port 6, and described panel is fixed by eight fixed orifices 7.
In Fig. 1, power module is specially voltage Voltage stabilizing module, and obtains access electric energy by communication and power interface.
Described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module; Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
Described expanding element is several, and adopts parallel access usb bus, and forms expansion module; Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay; Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.The optional embodiment of one as logic control circuit, described logic control circuit is expanded such as but not limited to the IO of employing 38 code translator as processor module, and the power pack of pilot relay, usb expansion chip and USB port.
Adopt mode in parallel to access usb bus by expanding element, the access quantity of USB device can greatly be improved.
Its repeat circuit is positioned on the data line of usb expansion chip, is ensured the stability of signal by machinery shutoff reliably and connection; And the electronic switch in logic control circuit and relay synchronous opening/closing, decrease the loss of power of device.
Described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And the USB management database that each port coding, device coding are sent in host computer by communication module is stored; When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module.
Expansion board coding is set for the processor module in each usb expansion plate, and is sent to USB management database by described communication module and stores; The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database; When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
Embodiment 2
On embodiment 1 basis, the present embodiment 2 additionally provides a kind of method of work of parallel extensive usb expansion device, described parallel extensive usb expansion device comprises: some usb expansion plates, and each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave; Described method of work comprises: be connected with host computer by main usb bus interface, main communication and power interface; And be also suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
Described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module; Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
Described expanding element is several, and adopts parallel access usb bus (shown in Fig. 1, each expanding element forms expansion module); Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay; Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.
Described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And the USB management database that each port coding, device coding are sent in host computer by communication module is stored; When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module.
Further, expansion board coding is set for the processor module in each usb expansion plate, and is sent to USB management database by described communication module and stores; The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database; When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
Concrete operation step of the present invention is as follows:
1, before whole parallel extensive usb expansion device powers on, can by all external USB equipment connections in each USB port, the corresponding numbering of each USB device, is stored in the USB management database of host computer.
2, after powering on, power module is expanding element, communication module and CPU module provide galvanic current source; Communication module and CPU module reset, and wait for that host computer sends instruction, and acquiescence all devices does not access host computer.
3, when certain USB device needs access host computer, host computer issues the incoming instruction of the device coding with this USB device, communication module in the first usb expansion plate be directly connected with host computer receives this incoming instruction, or by respective communication module, this incoming instruction is sent to each usb expansion plate be connected successively with the first usb expansion plate by this first usb expansion plate.
4, the processor module in each usb expansion plate arranges expansion board coding (such as each processor module installation coding), also expansion board coding is comprised in the incoming instruction that host computer sends, processor module judges whether the numbering comprising oneself from incoming instruction, if comprise, immediately respective extension plate is controlled; If do not comprise, do not do any reaction.
5, after processor module obtains instruction, the numbering read in incoming instruction controls expansion module.This incoming instruction also comprises check code, device coding and stop code composition, enhances the reliability of instruction, to reach the accurate control to equipment.
This embodiment, when usb bus signal stabilization, can expand several pieces to tens pieces expansion board, and external USB number of devices nearly can arrive thousands of, and hardware has good interchangeability.Host computer stores the numbering of all devices with the form of USB management database, and comprise corresponding expansion board coding, can manage database according to actual conditions, additions and deletions or amendment device numbering.Upper computer software adopts C# to write, compatible strong, stable operation.Communication module adopts RS485 bus to link together, and can realize data sharing and accurately be read.
Embodiment 3
On embodiment 1 basis, the present embodiment 3 provides a kind of parallel extensive expanding system based on usb bus, comprise: described parallel extensive usb expansion device, this parallel extensive usb expansion device and described host computer interconnected, and carry out USB port gating and USB data transmission and control.
Concrete, described host computer is see the relevant discussion of embodiment 1 or embodiment 2.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (10)
1. a parallel extensive usb expansion device, it is characterized in that, comprise: some usb expansion plates, each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave, and is connected with host computer by main usb bus interface, main communication and power interface; And
Also be suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
2. parallel extensive usb expansion device according to claim 1, it is characterized in that, described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module;
Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
3. parallel extensive usb expansion device according to claim 2, is characterized in that,
Described expanding element is several, and adopts parallel access usb bus;
Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay;
Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.
4. parallel extensive usb expansion device according to claim 3, is characterized in that,
Described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And
The USB management database that each port coding, device coding are sent in host computer by communication module is stored;
When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module.
5. parallel extensive usb expansion device according to claim 4, is characterized in that, arranges expansion board coding, and be sent to USB management database by described communication module and store for the processor module in each usb expansion plate;
The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database;
When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
6. based on a parallel extensive expanding system for usb bus, it is characterized in that, comprising: the parallel extensive usb expansion device as described in any one of claim 1-5.
7. a method of work for parallel extensive usb expansion device, is characterized in that, described parallel extensive usb expansion device comprises:
Some usb expansion plates, each usb expansion plate is equipped with master and slave usb bus interface and communicates and power interface with master and slave;
Described method of work comprises: be connected with host computer by main usb bus interface, main communication and power interface; And be also suitable between each usb expansion plate being communicated with master and slave by corresponding master and slave usb bus interface inter-link and power interface interconnected, to realize data transmission between each usb expansion plate and communication connection.
8. method of work according to claim 7, is characterized in that, described usb expansion plate comprises: with the expanding element of some USB port, processor module, logic control circuit, the communication module that is connected with this processor module;
Described processor module obtains the incoming instruction of corresponding USB device from host computer by communication module, and accessed by the logic control circuit control corresponding USB device be positioned in USB port according to this incoming instruction.
9. method of work according to claim 8, is characterized in that, described expanding element is several, and adopts parallel access usb bus;
Described expanding element comprises: the usb expansion chip be connected with each USB port, and described usb expansion chip is connected with usb bus by a relay;
Described logic control circuit be suitable for controlling respectively each expanding element repeat circuit gating, usb expansion chip triggers and each USB port is opened.
10. method of work according to claim 9, is characterized in that,
Described processor module all carries out corresponding encoded to each USB port, namely obtains the port corresponding with each USB port and encodes; And the USB device of USB port institute grafting is encoded, namely obtains relevant device coding; And
The USB management database that each port coding, device coding are sent in host computer by communication module is stored;
When using corresponding USB device, described incoming instruction generates from USB management database, and is sent to usb expansion plate by communication module;
Further, expansion board coding is set for the processor module in each usb expansion plate, and is sent to USB management database by described communication module and stores;
The corresponding lists of expansion board coding, USB port coding, device coding is set up in described USB management database;
When some usb expansion plates are interconnected and after access host computer, host computer inquires about the working condition of USB device in each USB port by corresponding lists, and send USB port and open or close and close instruction, the USB device access making this USB port corresponding or disconnect.
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| CN105426334B (en) | 2018-08-07 |
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