CN106502911A - Multiple terminals access device - Google Patents
Multiple terminals access device Download PDFInfo
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- CN106502911A CN106502911A CN201610986565.0A CN201610986565A CN106502911A CN 106502911 A CN106502911 A CN 106502911A CN 201610986565 A CN201610986565 A CN 201610986565A CN 106502911 A CN106502911 A CN 106502911A
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- signal
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
- G06F11/3648—Software debugging using additional hardware
- G06F11/3656—Software debugging using additional hardware using a specific debug interface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/008—Reliability or availability analysis
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/267—Reconfiguring circuits for testing, e.g. LSSD, partitioning
Abstract
The present invention relates to a kind of multiple terminals access device, including：USB transponders, USB handover modules, first network modular converter, the network switch and the second network conversion module, USB handover modules are connected with USB transponders, the network switch is connected with USB transponders by first network modular converter, and the second network conversion module is connected with the network switch；USB transponders are used for being connected with computer；First network modular converter is used for for usb signal being converted to network signal；USB handover modules are used for connecting USB interface and OTG interfaces；Second network conversion module is used for for network signal being converted to rs 232 serial interface signal, and is connected with serial interface.By usb signal is converted to network signal, and signal processing is carried out by the network switch, avoid the calculator memory that USB turns to cause UART interface more and take excessive situation, and USB interface, OTG interfaces, I/O expansion mouth and serial interface can be provided for test terminal, so that means of testing more horn of plenty, effectively increases testing efficiency.
Description
Technical field
The present invention relates to terminal test technical field, more particularly to multiple terminals access device.
Background technology
After the completion of the hardware device of intelligent terminal and software development, need to test software and hardware product bag, confirm
Whether which meets the requirement of design specification.For this purpose, intelligent terminal is connected to computer, intelligent terminal is carried out by computer
Test, computer is typically by USB (Universal Serial Bus, USB (universal serial bus)) and UART serial ports and intelligent terminal
Connection, USB port are used for for test case being issued to intelligent terminal, and UART mouths are used for read test information.For improving testing efficiency,
One computer need to connect multiple stage measured terminal, so that distribution test case does concurrent test.UART mouths due to commonly using are logical
Cross USB to convert, when UART makes a slip of the tongue many when, it will take more memory headroom, cause computer blue screen or deadlock.Cause
This, needs the automated test device that can connect multiple stage measured terminal badly.
Content of the invention
It is based on this, it is necessary to for the low defect of traditional intelligent terminal's testing efficiency, there is provided access a kind of multiple terminals
Device.
A kind of multiple terminals access device, including：USB transponders, USB handover modules, first network modular converter, network are handed over
Change planes and the second network conversion module, the USB handover modules are connected with the USB transponders, and the network switch passes through
The first network modular converter is connected with the USB transponders, second network conversion module and the network switch
Connection；
The USB transponders are used for being connected with computer；
The first network modular converter is used for for usb signal being converted to network signal；
The USB handover modules are used for connecting USB interface and OTG interfaces；
Second network conversion module is used for for network signal being converted to rs 232 serial interface signal, and is connected with serial interface.
Wherein in one embodiment, there are the USB transponders multiple USB interface, the USB transponders to pass through each institute
State USB interface to be connected with the computer, the USB handover modules and the first network modular converter respectively.
Wherein in one embodiment, the USB transponders quantity is multiple, and multiple USB transponders are connect by USB
Mouth is connected.
Wherein in one embodiment, the USB handover modules include the first control unit, first interface unit and switching
Unit, first control unit are connected with the first interface unit, and the first interface unit is connected with the switch unit
Connect, the switch unit is connected with the USB transponders；
First control unit is used for controlling the first interface unit and switch unit work, and by described
USB transponders and compunication；
The first interface unit is used for controlling the switch unit work according to the switching command of first control unit
Make；
The switch unit is used for being connected to USB interface and OTG interfaces, and is referred to according to the switching of first control unit
Order carries out the switching of USB interface and OTG interfaces.
Wherein in one embodiment, the quantity of the USB handover modules is two.
Wherein in one embodiment, each USB handover modules include eight first interface units, Mei Yisuo
State interface control unit to be connected with eight first interface units, each interface unit and switch unit described in connect
Connect.
Wherein in one embodiment, the USB handover modules also include current detecting unit, the current detecting unit
It is connected with first control unit, the current detecting unit is used for detecting the current value of USB interface, and by USB interface
Current value is sent to first control unit, and first control unit is additionally operable to control USB according to the current value of USB interface
The signal break-make of interface and power supply break-make.
Wherein in one embodiment, the USB handover modules also include power port, and first control unit passes through
The current detecting unit is connected with the power port.
Wherein in one embodiment, the USB handover modules also include I/O expansion port, the I/O expansion port and institute
State the connection of first interface unit.
Wherein in one embodiment, second network conversion module includes the second control unit, second interface unit
With serial interface unit, second control unit is connected with the second interface unit, the second interface unit with described
Serial interface unit connects, and the serial interface unit is connected with the network switch；
The power supply that second control unit is used for controlling the serial interface unit by the second interface unit is led to
Disconnected；
The second interface unit is used for according to the break-make of second control unit instruction control serial interface list
The power supply break-make of unit；
The serial interface unit is used for for network signal being converted to rs 232 serial interface signal, or rs 232 serial interface signal is converted to network
Signal.
Above-mentioned multiple terminals access device, by usb signal is converted to network signal, and carries out letter by the network switch
Number process, it is to avoid the calculator memory caused usb signal takes excessive situation more, it is to avoid computer therefore and blue screen or
Person is crashed, and can provide USB interface, OTG interfaces and serial interface for test terminal so that means of testing more horn of plenty,
So as to effectively increase testing efficiency.
Description of the drawings
Fig. 1 is the module frame chart of the multiple terminals access device of an embodiment；
Fig. 2 is the module frame chart of the USB handover modules of an embodiment；
Fig. 3 is the module frame chart of the USB handover modules of another embodiment；
Fig. 4 is the module frame chart of the second network conversion module of an embodiment；
Fig. 5 is the pin schematic diagram of the single-chip microcomputer LPC1768 of an embodiment；
Fig. 6 is the pin schematic diagram of the PCA9555PW chips of an embodiment；
Fig. 7 is the pin schematic diagram of the USB analog switch MAX4906 of an embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
For example, a kind of multiple terminals access device, including：USB transponders, USB handover modules, first network modular converter,
The network switch and the second network conversion module, the USB handover modules are connected with the USB transponders, the network exchange
Machine is connected with the USB transponders by the first network modular converter, second network conversion module and the network
Switch connects；The USB transponders are used for being connected with computer；The first network modular converter is used for turning usb signal
It is changed to network signal；The USB handover modules are used for connecting USB interface and OTG interfaces；Second network conversion module is used for
Network signal is converted to rs 232 serial interface signal, and is connected with serial interface.
As shown in figure 1, which is a kind of multiple terminals access device 10 of an embodiment, including：Cabinet, USB transponders 100,
USB handover modules 200, first network modular converter 310, the network switch 330 and the second network conversion module 320, the USB turn
Send out device 100, USB handover modules 200, first network modular converter 310, the network switch 330 and the second network conversion module 320
May be contained within cabinet, cabinet is provided with multiple USB interface, OTG interfaces and serial interface, the USB handover modules 200 with
The USB transponders 100 connect, and the network switch 330 is turned with the USB by the first network modular converter 310
Send out device 100 to connect, second network conversion module 320 is connected with the network switch 330；The USB transponders 100 are used
In being connected with computer；The first network modular converter 310 is used for for usb signal being converted to network signal；The USB switchings
Module 200 is used for connecting USB interface and OTG interfaces；Second network conversion module 320 is used for for network signal being converted to string
Message number, and be connected with serial interface.
Specifically, USB interface is used for accessing intelligent terminal, and OTG (On-The-Go) interface is used for accessing the outer of intelligent terminal
Hard disk is hung, and serial interface is used for TF (Trans-flash Card) cards for accessing intelligent terminal, serial interface is used for and intelligence
The UAR mouths interface connection of terminal, computer access intelligent terminal by the USB interface of multiple terminals access device 10, and by many
The OTG interfaces of terminal access device 10 access the plug-in hard disk of intelligent terminal, the TF cards for accessing intelligent terminal by serial interface.
In the present embodiment, by usb signal is converted to network signal, and carried out at signal by the network switch 330
Reason is as the usb signal of part is processed on the network switch 330, without the need for computer disposal, more so as to avoid usb signal
The calculator memory that causes takes excessive situation, it is to avoid computer therefore blue screen or deadlock, and can be test eventually
End provides USB interface, OTG interfaces and serial interface so that means of testing more horn of plenty, so as to effectively increase test effect
Rate.For example, there are the network switch 330 multiple network interfaces, the network switch 330 to pass through first network modular converter
The usb signal of USB transponders 100 is converted to network signal by 310, and is sent network signal to the second network turn by network
Network signal is converted to rs 232 serial interface signal by the second network conversion module 320, the second network conversion module 320 by mold changing block 320
It is connected with the equipment for accessing to serial interface by serial interface.
In one embodiment, the USB transponders 100 have multiple USB interface, and the USB transponders 100 are by each
The USB interface is connected with the computer, the USB handover modules 200 and the first network modular converter 310 respectively
Connect.In the present embodiment, the port number of the USB transponders 100 is that there are seven USB to connect for seven, i.e. the USB transponders 100
Mouthful.For example, the USB transponders 100 are usb hub (HUB), and for transmission signal, for example, the usb hub is multiport
Transponder, for example, the USB transponders 100 are connected to computer by USB data line, and by the instruction of computer or letter
Number it is forwarded to USB handover modules 200 and first network modular converter 310, or by USB handover modules 200 and the first net
The signal of network modular converter 310 is forwarded to computer, as the USB transponders 100 have multiple USB interface, you can connection is more
Individual USB handover modules 200 and/or first network modular converter 310, so that multiple terminals access device 10 can be concurrently accessed
More intelligent terminal, so that further increase testing efficiency.
For example, 100 quantity of USB transponders is multiple, and multiple USB transponders 100 are connected by USB interface.
For example, multiple USB transponders 100 are cascaded, and can be improved and be used for by the connected or cascade of multiple USB transponders 100
The USB interface quantity being connected with USB handover modules 200 and first network modular converter 310 such that it is able to provide more
USB interface, OTG interfaces and serial interface, so that access more intelligent terminal.For example, 100 quantity of USB transponders is
Three, for example, USB transponders 100 include the first transponder, the second transponder and the 3rd transponder, the first transponder, second turn
Send out device and the 3rd transponder be respectively provided with seven US interfaces, for example, the first transponder is connected to computer by USB data line,
Second transponder and the 3rd transponder are respectively connecting to the first transponder by USB data line, so, are forwarded by three USB
The connection of device 100 such that it is able to provide more USB interface, is turned with accessing multiple USB handover modules 200 and first network
Mold changing block 310, and then enable multiple terminals access device 10 to be concurrently accessed more intelligent terminal, so as to further increase
Testing efficiency.
In one embodiment, the USB handover modules 200 include the first control unit 210, first interface unit 220
With switch unit 230, first control unit 210 is connected with the first interface unit 220, the first interface unit
220 are connected with the switch unit 230, and the switch unit 230 is connected with the USB transponders 100；First control is single
Unit 210 is used for controlling the first interface unit 220 and the switch unit 230 works, and passes through the USB transponders 100
With compunication；The first interface unit 220 is used for according to the control of the switching command of first control unit 210
Switch unit 230 works；The switch unit 230 is used for being connected to USB interface and OTG interfaces, and according to the described first control
The switching command of unit 210 carries out the switching of USB interface and OTG interfaces.
For example, the USB handover modules 200 are that USB switches version, and the USB switch boards are used for by being connected to USB transponders
100, the usb signal of computer is sent to USB interface and OTG interfaces, the survey of computer and intelligent terminal in USB interface is realized
Examination, and the test to the plug-in hard disk on OTG interfaces.Specifically, the switch unit 230 is USB analog switches, and which has three
Individual stitch, is respectively connecting to USB interface, OTG interfaces and USB transponders 100.
For example, the quantity of the USB handover modules 200 is two.For example, two USB handover modules 200 respectively with
Two USB transponders 100 connect, and for example, two USB handover modules 200 are connected with three USB transponders 100 respectively, tool
Body ground, every USB transponders 100 have seven USB interface, so, remove four seven be connected between USB transponders 100
USB interface, it is possible to provide 17 USB interface, wherein, 16 USB interface USB handover modules 200 described with two are connected, per
USB handover modules 200 described in one are connected with eight USB interface of USB transponders 100.
In one embodiment, each USB handover modules 200 include eight first interface units 220, each
The interface control unit is connected with eight first interface units 220, is switched single described in each interface unit and
Unit 230 connects, and for example, the USB handover modules 200 include eight switch units 230, for example, each switch unit 230
One USB interface of connection and an OTG interface.In the present embodiment, as USB handover modules 200 include eight first interfaces
Unit 220 and eight switch units 230, therefore, each USB handover modules 200 provide simultaneously eight USB interface and
Eight OTG interfaces, improve the access quantity of intelligent terminal, while more intelligent terminal are had access to, so as to effectively improve
Testing efficiency.
In one embodiment, the USB handover modules 200 also include power detecting unit 240, the power detecting list
Unit 240 is connected with first control unit 210, and the power detecting unit 240 is used for the current value for detecting USB interface, and
The current value of USB interface is sent to first control unit 210, first control unit 210 is additionally operable to be connect according to USB
The signal break-make and power supply break-make of the current value control USB interface of mouth.For example, the USB handover modules 200 also include power supply
Port, first control unit 210 are connected with the power port by the power detecting unit 240, the power port
For intelligent terminal, and power for intelligent terminal.
For example, the power detecting unit 240 is used for the current value for detecting USB interface, and the current value of USB interface is sent out
First control unit 210 is delivered to, first control unit 210 is used for being more than predetermined threshold value when the current value of USB interface
When, control the switch unit 230 and interrupt the USB interface, for example, for example, the power detecting unit 240 is used for detecting power supply
The current value of port, and the current value of power port is sent to first control unit 210, first control unit
210 are used for, when the current value of power port is more than predetermined threshold value, controlling the power detecting unit 240 and interrupting the power end
Mouthful.In the present embodiment, interrupt referring to disconnect the power port, or disconnect the power supply to power port, or disconnect
Signal transmission and reception to USB interface, or disconnect the power supply to USB interface.
In one embodiment, the USB handover modules also include IO (Input/Output, input/output) extensions end
Mouthful, the I/O expansion port is connected with the first interface unit 220, i.e., IO described in each interface unit 220 and expands
The connection of exhibition port, the I/O expansion port are used for being connected with the switch key of intelligent terminal, and and for example, the I/O expansion port is used for and intelligence
The OTG mouths connection of energy terminal.For example, the I/O expansion port includes 3 3.3V I/O pins, and the machine open/close of external intelligent terminal is pressed
Key and OTG mouths, for controlling the machine open/close of intelligent terminal, or connection external USB memorizer.
In one embodiment, second network conversion module 320 includes the second control unit 322, second interface list
Unit 324 and serial interface unit 326, second control unit 322 are connected with the second interface unit 324, and described second
Interface unit 324 is connected with the serial interface unit 326, and the serial interface unit 326 is connected with the network switch 330
Connect；Second control unit 322 is used for the confession for controlling the serial interface unit 326 by the second interface unit 324
Electric break-make；The second interface unit 324 is used for being connect according to the break-make of the second control unit 322 instruction control serial ports
The power supply break-make of mouth unit 326；The serial interface unit 326 is used for for network signal being converted to rs 232 serial interface signal, or will string
Message number is converted to network signal.
For example, second network conversion module 320 is Network Serial Port plate, for network signal is converted to rs 232 serial interface signal,
Or rs 232 serial interface signal is converted to network signal, for example, second control unit 322 is connected to eight second interface units 324,
Each second interface unit 324 is connected to a serial ports interface unit 326, and serial interface unit 326 is connected to network exchange
Machine 330, and the connection serial interface of serial interface unit 326, so that access serial equipment.The serial interface unit 326 is used for will
Network signal is converted to rs 232 serial interface signal, or rs 232 serial interface signal is converted to network signal.
In one embodiment, also include power module, the power module respectively with the USB handover modules 200 with
And second network conversion module 320 connects.The power module is used for switching film and second network for the USB
Modular converter 320 is powered, and for example, the power module is connected with the power detecting unit 240.In the present embodiment, multiple terminals
Access device is additionally provided with power interface, and the USB handover modules 200 also include power interface, and the power interface is used for connecting intelligence
Energy terminal, is that intelligent terminal powers.
It is a specific embodiment of the present invention below：
In the present embodiment, multiple terminals access device includes cabinet, is provided with USB transponders, USB switching moulds in cabinet
Block, first network modular converter, the network switch and the second network conversion module.
Specifically, in the present embodiment, USB transponders are USB HUB, and its quantity is three, and a USB transponder passes through
USB data line is connected to computer, and two other is connected with the USB transponders.
In the present embodiment, USB handover modules be USB switch boards, the USB switch boards include the first control unit, first
Interface unit, switch unit and relay, in the present embodiment, the first control unit be single-chip microcomputer LPC1768, the first interface
Unit is PCA9555PW chips, and the switch unit is USB analog switch MAX4906, and the I2C pins of single-chip microcomputer LPC1768 connect
To eight PCA9555PW chips, SDA the and SCL pins of PCA9555PW chips are connected with the I2C pins of single-chip microcomputer LPC1768,
The signal combination that single-chip microcomputer LPC1768 is fed back to by SDA and SCL pins, the transmission to single-chip microcomputer LPC1768 are each
The address of PCA9555PW chips, so that single-chip microcomputer LPC1768 distinguishes the signal of different passages, is connect with the USB for recognizing different
Mouthful.The P00 pins of PCA9555PW chips are connected to the IN stitch of USB analog switch MAX4906, USB analog switch MAX4906
Three pins connect USB port, USB interface and OTG interfaces respectively, wherein USB port is connected to USB by USB data line
Transponder, control instructions of the USB analog switches MAX4906 according to single-chip microcomputer LPC1768 select to connect USB interface or OTG connect
Mouthful, i.e. USB switch boards have eight passages, each passage have PCA9555PW chip, USB analog switches MAX4906 with
And a relay, single-chip microcomputer LPC1768 is by controlling the gating of USB analog switch MAX4906 and then controlling each passage
Gating interface, and PCA9555PW chips are controlled to the break-make of relay output signal control interface.So as to realize intelligent terminal's
Access, intelligent terminal has access to USB interface or OTG interfaces.
The USB switch boards are additionally provided with current detecting unit, and the current detecting unit includes current differential measurement chip
MAX199 and current measurement chip ADC128D818, the I2C pins of current differential measurement chip MAX199 and single-chip microcomputer LPC1768
Connection, current differential measurement chip MAX199 detections access the electric current of the USB port on USB handover modules, when the electricity of USB interface
When stream is more than pre-set current value, current measurement chip ADC128D818 exports interrupt signal, single-chip microcomputer to single-chip microcomputer LPC1768
LPC1768 controls interruption of the PCA9555PW chips to relay output signal control interface, and disconnects the power supply to USB interface,
Avoid as electric current is excessive and cause device damage.
In the present embodiment, the USB switch boards also set up power interface, and the power interface is used for connecting intelligent terminal, is
Intelligent terminal powers.
In the present embodiment, first network conversion module be USB network interface patchcords, the USB network interfaces patchcord be used for realize
The conversion of usb signal and network signal, the USB network interface patchcords one end is USB interface, and the other end is network interface, and USB network interfaces are transferred
The interface of line is connected to USB HUB, and, to the network switch, the network switch is by IP ground for the network interface connection of USB network interface patchcords
To distinguish the port numbers of different interfaces, for example, the network switch is 24 mouthful of 100,000,000 network switch for location.
Specifically, second network conversion module includes the second control unit, second interface unit and serial interface list
Unit, in the present embodiment, the second control unit be single-chip microcomputer LPC1768, second interface unit be PCA9555PW chips, serial ports
Interface unit is Network Serial Port Converting terminal.For example, the second network conversion module includes Network Serial Port plate and Network Serial Port conversion
Terminal, Network Serial Port Converting terminal are arranged on Network Serial Port plate, the Network Serial Port version include single-chip microcomputer LPC1768,
PCA9555PW chips and relay, PCA9555PW chips are connected to Network Serial Port Converting terminal, the Network Serial Port Converting terminal
For switching network signal and rs 232 serial interface signal, for example, the serial interface is UART (Universal Asynchronous
Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter) serial interface, single-chip microcomputer LPC1768 by I2C interfaces with
PCA9555PW chips, PCA9555PW chips are connected with Network Serial Port Converting terminal, for control PCA9555PW chip outputs
Control instruction, with control relay break-make, so that realize the break-make of serial interface.In the present embodiment, Network Serial Port end of convert
Son is the super network interface modules of USR-K1 (Jinan someone scientific ＆ technical corporation), and which is used for TCP/UDP packets and UART serial interfaces
Data transparent transmission is realized, the Network Serial Port Converting terminal has network interface and serial ports, and specifically, the network switch is connected by netting twine
It is connected on the network interface of Network Serial Port Converting terminal, the serial ports of Network Serial Port Converting terminal is used for providing equipment access, single-chip microcomputer
LPC1768 is used for the break-make for controlling Network Serial Port Converting terminal on a certain passage.
The following is another specific embodiment：
In the present embodiment, cabinet is provided with 16 group interfaces, corresponding to meeting 16 intelligent terminal.Include one per group interface
USB port (USB interface), UART mouths (UART serial interfaces), 5V power supply terminals (power interface), an I/O expansion
Mouth, an OTG mouth (OTG interfaces) and one group of display lamp.USB port is used for intelligent terminal's distribution test case, transmission adb lives
Order, UART mouths are used for printing test information and result, and OTG mouths are used for testing the USB compatibility of intelligent terminal or storage test number
According to 5V power supply terminals are used for be powered with the intelligent terminal that USB powers to TV box etc., and I/O expansion mouth includes 3 3.3V
I/O pin, can be with the machine open/close button of external intelligent terminal, OTG ID lines etc., and for switching on and shutting down control etc., display lamp is to indicate
Per group of 5V powers, and whether whether normal, serial ports connects.
Multiple terminals access device also includes two USB multy-way switching plates, for the multy-way switching of usb signal, provides intelligence
The power supply of terminal, extension mouth and measuring terminals power consumption etc..The holding wire of wherein intelligent terminal's USB port, can be switched by which and be connected
It is connected to:1) computer is connect；2) OTG is met；3) hanging.The VBUS power supplys of terminal USB port, can be connected to by switching：1) 5V electricity is connect
Source；2) computer-USB VBUS are met；3) hanging.Either powered with USB or powered with 5V power supply terminals, can be measured
The power consumption of terminal.
Multiple terminals access device also includes that a USB3.0 gigabit network interface, 24 mouthfuls of network switch, a Network Serial Port turn
Plate and serial port connecting wire is changed, is found due to signal processing and address and is processed on the network switch, reduced to computer
The occupancy of internal memory, using reliable and stable, is not in the situation for causing PC blue screens when the connection of USB serial ports is more；And each serial ports
Number fixation, easy to use.
In concrete application, PC is connected to cabinet by a USB line, and the USB hub for having 37 mouthfuls in cabinet, by USB
Line is connected to each USB port in USB switch boards on hub；USB network interfaces one end connects hub, and the other end is the net that changes out
Network signal, the network switch for being connected to 24 mouthfuls by netting twine, switch are connected to each of Network Serial Port plate by netting twine again
Network signal is converted into UART signal by the network port, by 5 mouthfuls of Serial Port Line, is connected to casing, is made for intelligent terminal
With.
Every piece of USB switch boards can be divided into 8 groups of circuit modules, have 3 USB ports per group, and one meets hub, and 1 meets OTG, and 1
Individual it is connected to casing (meeting intelligent terminal).On board, application simulation switch is connected to that switching intelligent terminal's USB port
Interface.Meanwhile, also containing an I/O expansion mouth, an outside 5V power supplys output etc. in every group of circuit.
The Switching Power Supply of 2 220V is provided with cabinet, the unidirectional current of each power supply output+5V, driving force for 40A
Source, powers to internal board (switching version and Network Serial Port version including USB) and measured terminal.
USB switch boards have a single-chip microcomputer LPC1768, for controlling switch break-make and reading measurement USB port and power end
Current value of terminal etc..Single-chip microcomputer LPC1768 is communicated by UART mouths and computer.The I2C ports of single-chip microcomputer connect 8
PCA9555IO port chips, 14 PO mouths of PCA9555IO port chips output, each PCA9555IO port chip connect
Meet a USB port (USB interface), UART mouths (UART serial interfaces), 5V power supply terminals (power interface), an IO
Extension mouth, an OTG mouth (OTG interfaces) and one group of display lamp, each PCA9555IO port chip are constituted with corresponding port
Set of circuits module, PCA9555IO port chips are used for the I/O expansion mouth of control relay, analog switch and 5pin.
USB analog switch MAX4906, for the USB port that control connects terminal, are to select connection PC (by hub), or
Connection OTG, or vacantly.
Outside+5V power supplys, are connected to MAX199 current differentials by the gating of relay and measure chip, by current differential
ADC128D818 current measurement chips are linked into, single-chip microcomputer is linked into by I2C then, current value is calculated.
Intelligent terminal accesses automatic sensing function：In single-chip microcomputer, the initial current upper limit of each passage is arranged to
100mA, when the intelligent terminal having been switched on is connected to multiple terminals access device by USB line or 5V power supply terminals, monitoring of equipment
When this current value all the way is arrived more than 100mA, that is, produce interruption, now go out relevant information from serially printing, point out have terminal to connect
Enter.After computer receives relevant information, i.e., in interface by this all the way terminal show.
The excessive power supply of power consumption disconnects automatically：The current limitation of each passage can be set by external program control single chip computer
Value, when electric current meets or exceeds ultimate value, ADC128D818 chips produce interruption, export in the interrupt signal of single-chip microcomputer,
Single-chip microcomputer disconnects the power supply of this passage controlling.
Network Serial Port plate includes that single-chip microcomputer LPC1768, single-chip microcomputer LPC1768 pass through I2C Interface Controller PCA9555IO
Port chips, then control the break-make of the relay of each passage again.Relay is the 3.3V for controlling network serial port module
Whether power supply will power, and control with this whether UART mouths work.
Network Serial Port modular converter uses the super network interface modules of USR-K1 of Jinan someone scientific ＆ technical corporation, is for inciting somebody to action
TCP/UDP packets realize the equipment of data transparent transmission with UART interface.
The functional characteristics of the super network interfaces of USR-K1 is as follows：
● 10/100M adaptive ethernet interfaces, ultra-small volume, network interface size, RJ45 interfaces；
● serial port baud rate can be arranged from 300bps to 921.6Kbps；
● network mode of operation may be selected TCP Server, TCP Client, UDP and UDP Server.
In actually used, using USB3.0 PCI-Express, usb signal is converted into network signal, then reconnects netting twine
To 24 mouthfuls of 100,000,000 network switch, switch is connected on USR-K1 by netting twine.The IP address of USB network card need to preset ground
Location：By software USR-Kx V2.0.1.497, the address that each network interface IP address is arranged to the 192.168.2.x network segments, arrange
After each network interface good, then software is arranged by virtual serial port, by each serial port setting into fixed serial ports and in corresponding IP address
Corresponding, so, in actual use, the serial port of each passage is arranged to fix serial port, and can pass through program control
Make which to be turned on and off.
In the present embodiment, the multiple intelligent terminal of multiport access, not only so that test process is stable, can be prevented effectively from
Computer corruption or blue screen, and connecting line can be reduced, computer is connected by multiple terminals access device by only needing a USB
Multiple stage intelligent terminal, without the need for being extended to the port of computer, on the other hand, also achieves the power consumption to intelligent terminal and surveys
Try, and set power supply to reach the standard grade, realize that intelligent terminal connects automatic monitoring function according to this.
It should be noted that in said system embodiment, included modules simply carry out drawing according to function logic
Point, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each functional unit is concrete
Title is also only to facilitate mutually differentiation, is not limited to protection scope of the present invention.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in the various embodiments described above method
Can be by program to complete to instruct the hardware of correlation, corresponding program can be stored in read/write memory medium.
Each technical characteristic of embodiment described above arbitrarily can be combined, for making description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not moved
Dynamic contradiction, is all considered to be the scope of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of multiple terminals access device, it is characterised in that include：USB transponders, USB handover modules, first network modulus of conversion
Block, the network switch and the second network conversion module, the USB handover modules are connected with the USB transponders, and the network is handed over
Change planes and be connected with the USB transponders by the first network modular converter, second network conversion module and the net
Network switch connects；
The USB transponders are used for being connected with computer；
The first network modular converter is used for for usb signal being converted to network signal；
The USB handover modules are used for connecting USB interface and OTG interfaces；
Second network conversion module is used for for network signal being converted to rs 232 serial interface signal, and is connected with serial interface.
2. multiple terminals access device according to claim 1, it is characterised in that there are the USB transponders multiple USB to connect
Mouthful, the USB transponders by each USB interface respectively with the computer, the USB handover modules and described first
Network conversion module connects.
3. multiple terminals access device according to claim 2, it is characterised in that the USB transponders quantity be multiple, many
The individual USB transponders are connected by USB interface.
4. multiple terminals access device according to claim 3, it is characterised in that the USB handover modules include the first control
Unit processed, first interface unit and switch unit, first control unit are connected with the first interface unit, and described first
Interface unit is connected with the switch unit, and the switch unit is connected with the USB transponders；
First control unit is used for controlling the first interface unit and switch unit work, and passes through the USB
Transponder and compunication；
The first interface unit is used for controlling the switch unit work according to the switching command of first control unit；
The switch unit is used for being connected to USB interface and OTG interfaces, and is entered according to the switching command of first control unit
Row USB interface and the switching of OTG interfaces.
5. multiple terminals access device according to claim 4, it is characterised in that the quantity of the USB handover modules is two
Individual.
6. multiple terminals access device according to claim 5, it is characterised in that each USB handover modules include eight
The individual first interface unit, each interface control unit are connected with eight first interface units, each described are connect
Mouth unit is connected with switch unit described in.
7. multiple terminals access device according to claim 4, it is characterised in that the USB handover modules also include electric current
Detector unit, the current detecting unit are connected with first control unit, and the current detecting unit is used for detecting that USB connects
The current value of mouth, and the current value of USB interface is sent to first control unit, first control unit is additionally operable to root
Signal break-make and power supply break-make according to the current value control USB interface of USB interface.
8. multiple terminals access device according to claim 7, it is characterised in that the USB handover modules also include power supply
Port, first control unit are connected with the power port by the current detecting unit.
9. multiple terminals access device according to claim 1, it is characterised in that the USB handover modules also include that IO expands
Exhibition port, the I/O expansion port is connected with the first interface unit.
10. multiple terminals access device according to claim 1, it is characterised in that second network conversion module includes
Second control unit, second interface unit and serial interface unit, second control unit are connected with the second interface unit
Connect, the second interface unit is connected with the serial interface unit, the serial interface unit is connected with the network switch
Connect；
Second control unit is used for the power supply break-make for controlling the serial interface unit by the second interface unit；
The second interface unit is used for instructing the control serial interface unit according to the break-make of second control unit
Power supply break-make；
The serial interface unit is used for for network signal being converted to rs 232 serial interface signal, or rs 232 serial interface signal is converted to network letter
Number.
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| CN201610986565.0A CN106502911B (en) | 2016-11-09 | 2016-11-09 | Multi-terminal access device |
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| CN201610986565.0A CN106502911B (en) | 2016-11-09 | 2016-11-09 | Multi-terminal access device |
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| CN106502911B CN106502911B (en) | 2019-12-10 |
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