CN209357051U - A kind of computer USB Communication Hub - Google Patents

Abstract

The utility model discloses a kind of computer USB Communication Hubs, are related to the usb hub field of household network；Including power circuit and hub control circuit; it further include driving-detection circuit and protection circuit; power circuit is hub control circuit, driving-detection circuit and protection circuit power supply; hub control circuit one end is connect with computer; its other end is connect with driving-detection circuit control signal; driving-detection circuit control output end is connect with protection circuit input end, and the output end connecting hub control circuit of circuit is protected in driving-detection circuit test side connecting hub control circuit；Protection circuit is arranged to usb hub in the utility model; it is protected in terms of powering with interface two; existing USB hub interface is efficiently solved using relay driving; long-term plug easily causes surge; the problem for causing its security performance low has achieved the effect that safe driving, security extension interface.

Description

A kind of computer USB Communication Hub

Technical field

The utility model relates to the usb hub field of household network, especially a kind of computer USB Communication Hub.

Background technique

Smart home passes through technology of Internet of things for various equipment (such as audio & video equipment, lighting system, the curtain control in family System, airconditioning control, security system, Digital Theater System, video server, shadow cabinet system, network home appliance etc.) it connects together, Home wiring control, Lighting control, remote control using telephone, indoor and outdoor remote control, burglar alarm, environmental monitoring, HVAC control, infrared is provided Multiple functions and the means such as forwarding and programmable Timer control.Compared with common household, smart home not only has traditional Inhabitation function has both building, network communication, information household appliances, equipment automatization, provides comprehensive information exchange function, even Fund is saved for various energy expenditures；Home network therein also gradually develops, when using electronic equipment, it usually needs pass through USB interface carries out the external of equipment, such as when with tablet computer, needs multiple USB interfaces chargings, slotting card reader or storage card Deng this is just to need to be extended the USB interface of tablet computer.

USB (Universal Serial Bus) is the technology of serial communication mark for connecting computer system and external equipment Standard and 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, has 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；In this background, connected by usb bus The external equipment for being connected to a main control terminal is more and more, and usb hub comes into being, and usb hub is also known as USB Hub, , using the expansible multiple USB interfaces out of stelliform connection topology configuration, the chip of USB Hub is main control chip (also known as bridging chip) for it, By software and hardware algorithm by some USB interface (upstream port) resource allocation with PC to USB Hub expand come USB connect Mouth (downstream port) uses, to realize expansion.

In use, user needs selectively to make certain USB external equipments and main control device in different moments It establishes or disconnects, this process, which continuously plugs, leads to equipment Caton, and Producing reason is interface using relay Driving, will appear phenomena such as surge in swapping process, causes its security performance bad.Therefore, it is necessary to a kind of intelligent USB set lines Device can overcome problem above, realize security extension.

Summary of the invention

The purpose of this utility model is that: the utility model provides a kind of computer USB Communication Hub, solves existing There is USB hub interface using relay driving, long-term plug easily causes surge, the problem for causing its security performance low.

The technical solution adopted in the utility model is as follows:

A kind of computer USB Communication Hub, including power circuit and hub control circuit, further include driving-detection Circuit and protection circuit, the power circuit is that hub control circuit, driving-detection circuit and protection circuit are powered, described Hub control circuit one end is connect with computer, and the other end is connect with driving-detection circuit control signal, the drive Dynamic-detection circuit control output end is connect with protection circuit input end, the driving-detection circuit test side connecting hub control Circuit processed, the output end connecting hub control circuit of the protection circuit.

Preferably, the protection circuit and driving-detection circuit circuit connection are as follows:

Driving-detection circuit control output end is separately connected diode D65, diode D66, diode D67, diode The cathode of D68, diode D65, diode D66, diode D67, diode D68 anode be all connected with switching tube Q37 source electrode, open Pipe Q37 grounded drain is closed, grid connects power supply VCC, diode D65, diode D66, diode after connecting diode D54 D67, diode D68 cathode be also respectively connected with capacitor C55, capacitor C54, capacitor C53 and capacitor C52 after be grounded, diode D54 Cathode is grounded after being also connected with the capacitor C51 and resistance R198 being connected in parallel.

Preferably, the power circuit includes 5V power circuit, and circuit connection is as follows: the 5V power circuit includes electricity Hold C57, voltage stabilizing chip U16, capacitor C129 and capacitor C130, Vin pin connection battery-end and the one end capacitor C57, capacitor C57 Another termination the earth, GND pin connect the earth, one end of capacitor C129 and capacitor C130 that the connection of+5V pin is connected in parallel After connect output interface, output interface is each modular circuit power supply of hub, the capacitor C129 and capacitor C130 being connected in parallel Another termination the earth.

Preferably, the power circuit includes 3.3V power circuit, the 3.3V power circuit include decompression chip U11 and The filter capacitor C11-C15 being connected in parallel, the IN pin of the decompression chip U11 connect battery-end, the connection of the end BS, SW, FB 3.3V is exported after filter circuit.

Preferably, the hub control circuit includes CPU, and driving-detection circuit includes driving chip, driving chip with The circuit connection of CPU is as follows:

3 pin of driving chip connects 48 pins of CPU with INPUT2 pin, and 5, which connect the 47 of CPU with INPUT2 pin, draws Foot, 1,12 pins connect power supply VCC, and 11 pins connect the chip selection signal of main control computer；

Its 7 connect resistance R149 with CURRENT SENSE1 pin after connect 46 pins of CPU, 46 pins of CPU also connect 44 pins that CPU is connected after capacitor C43, the capacitor C44 of series connection are connect, resistance R149 connects electricity after resistance R223 is connected in series R148 is hindered, resistance R148 connection capacitor C44, resistance R223 connect capacitor C47,9 and CURRENT after being also connected with resistance R227 SENSE2 pin connects 45 pins of connection CPU after resistance R150, and 45 pins for connecting CPU are also connected with connection electricity after capacitor C47 Hold C44,45 pins for connecting CPU are also connected with 43 pins of connection CPU after resistance R225, resistance R157, and resistance R225 is also connected with Capacitor C44 is connected after resistance R229.

It preferably, further include radio communication circuit, the radio communication circuit is connected with hub control circuit, realizes nothing Line transmits detecting state；Communication is using WIFI mode or 4G wireless data sending mode or NB-IoT mode.

It preferably, further include output alert circuit, the output alert circuit is connected with hub control circuit, realizes shape State is reminded.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:

1. protection circuit is arranged to usb hub in the utility model, power supply clutter is removed from power supply, voltage or current is different Pressure limiting, current-limiting protection are carried out by protection circuit when often, driving-detection circuit is protected, efficiently solves existing usb hub Interface uses relay driving, and long-term plug easily causes surge, and the problem for causing its security performance low has reached safe drive Dynamic, security extension interface effect；

2. carrying out drive control, the work of driving chip using driving chip in the driving-detection circuit of the utility model Performance will not belong to integrated chip because of long-time using reducing, and control reliability and service life various aspects are better than simple Relay control because being controlled using integrated chip, while avoiding carrying out controlling using simple relay plugging for a long time causing The problem of surge, avoids the disadvantage low using relay control security, has reached accurate control, has simplified circuit, improves peace The effect of full property；

3. the driving chip that the utility model uses is in addition to drive control function, moreover it is possible to electric current is detected, according to the electricity of detection Stream obtains the state of driven object, will test result and feeds back to computer and carry out output prompting, is conducive to quick misarrangement when failure；

4. the utility model will test result, electronic feedback is reminded to user's mobile device by output by wireless communication Circuit carries out buzzing prompting, conducive to Interface status is known in time, prevents surge bring failure.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.

Fig. 1 is the partial circuit diagram of the protection circuit and power circuit of the utility model；

Fig. 2 is the control block diagram of the utility model；

Fig. 3 is the hub control circuit and driving-detection circuit partial circuit diagram of the utility model；

Fig. 4 is the partial circuit diagram of the power circuit of the utility model.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive Property include so that include a series of elements process, method, article or equipment not only include those elements, but also Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described There is also other identical elements in the process, method, article or equipment of element.

Feature and performance of the invention are described in further detail with reference to embodiments.

Embodiment 1

A kind of computer USB Communication Hub, including power circuit and hub control circuit, further include driving-detection Circuit and protection circuit, power circuit are hub control circuit, driving-detection circuit and protection circuit power supply, hub control Circuit on one side processed is connect with computer, and the other end is connect with driving-detection circuit control signal, driving-detection circuit control Output end processed is connect with protection circuit input end, and circuit is protected in driving-detection circuit test side connecting hub control circuit Output end connecting hub control circuit.

Protect circuit and driving-detection circuit circuit connection as follows: driving-detection circuit control output end connects respectively Meet the cathode of diode D65, diode D66, diode D67, diode D68, diode D65, diode D66, diode D67, diode D68 anode be all connected with switching tube Q37 source electrode, switching tube Q37 grounded drain, grid connects diode D54 Afterwards connect power supply VCC, diode D65, diode D66, diode D67, diode D68 cathode be also respectively connected with capacitor C55, It is grounded after capacitor C54, capacitor C53 and capacitor C52, diode D54 cathode is also connected with the capacitor C51 and resistance R198 being connected in parallel After be grounded.

Power circuit includes 5V power circuit, and circuit connection is as follows: 5V power circuit includes capacitor C57, voltage stabilizing chip U16, capacitor C129 and capacitor C130, Vin pin connection battery-end and the one end capacitor C57, another termination the earth of capacitor C57, Its GND pin connects the earth, and connection output connects behind one end of capacitor C129 and capacitor C130 that the connection of+5V pin is connected in parallel Mouthful, output interface is each modular circuit power supply of hub, and another termination of the capacitor C129 and capacitor C130 that are connected in parallel are big Ground.

Power circuit includes 3.3V power circuit, and 3.3V power circuit includes the filtering for being depressured chip U11 and being connected in parallel Capacitor C11-C15, the IN pin of decompression chip U11 connect battery-end, export 3.3V after the end BS, SW, FB connection filter circuit.

Working principle: computer issues instruction, and hub control circuit receives instruction, cpu logic driving-detection therein The control signal of circuit, driving-detection circuit control output end connection protection circuit input end, removes drive control process In clutter perhaps exception carries out pressure limiting or current-limiting protection by protection circuit in time, it is specific as follows: hub control circuit Controlling driving-detection circuit output end by low and high level is that high level perhaps realize connection driven object or break by low level Driven object is opened, when occurring abnormal, such as current anomaly, it is protected when abnormal current is smaller by diode, abnormal current When larger, protected by metal-oxide-semiconductor；Protect the port of circuit output end connecting hub control circuit, hub control electricity Road further includes hub protocol control chip and USB device control chip, hub protocol control chip by uplink port and Computer port connection, a port of computer include seven downlink ports, and hub protocol controls chip and passes through under one Row port connects USB device and controls chip input terminal, and it includes 8 data port, hub association that USB device, which controls chip output, View control chip and USB device control chip are by connecting realization Interface Expanding with computer.

Physical circuit is as shown in Fig. 1,3,4, the model of the hub protocol control chip use in hub control circuit For the AU9254A21 of Alcor Micro company；USB device controls the model Cypress company that chip uses CY7C68013a；Driving chip model VND5012AK；The power supply power supply of chip is depressured core using 3.3V power supply and 5V power supply Piece model MP2403D, voltage stabilizing chip model PJ7805, CPU model STM32F030R8T6, the model of switching tube RU75N08S TO263, diode model S3B (DO-214 type)；Those skilled in the art can model historically and electricity Road figure clearly and completely realizes the technical solution of the application；

Protection circuit is arranged to usb hub in the utility model, is protected in terms of powering with Interface Controller two, effectively Ground solves existing USB hub interface using relay driving, and long-term plug easily causes surge, causes its security performance low The problem of, reach timely de-interfaced when interface detection is reminded, removes the surge of power supply bring, safety driving and expansion interface Effect.

Embodiment 2

Based on embodiment 1, the present embodiment refines driving-detection circuit, and details is as follows:

Hub control circuit includes CPU, and driving-detection circuit includes driving chip, the circuit company of driving chip and CPU It connects as follows:

3 pin of driving chip connects 48 pins of CPU with INPUT2 pin, and 5, which connect the 47 of CPU with INPUT2 pin, draws Foot, 1,12 pins connect power supply VCC, and 11 pins connect the chip selection signal of main control computer；

Its 7 connect resistance R149 with CURRENT SENSE1 pin after connect 46 pins of CPU, 46 pins of CPU also connect 44 pins that CPU is connected after capacitor C43, the capacitor C44 of series connection are connect, resistance R149 connects electricity after resistance R223 is connected in series R148 is hindered, resistance R148 connection capacitor C44, resistance R223 connect capacitor C47,9 and CURRENT after being also connected with resistance R227 SENSE2 pin connects 45 pins of connection CPU after resistance R150, and 45 pins for connecting CPU are also connected with connection electricity after capacitor C47 Hold C44,45 pins for connecting CPU are also connected with 43 pins of connection CPU after resistance R225, resistance R157, and resistance R225 is also connected with Capacitor C44 is connected after resistance R229.

Connecting hub after circuit is protected in the INPUT pin of CPU connection driving chip, the connection of driving chip control output end Control circuit port, realization control interface on-off, the electric current that the CURRT SENSE pin feedback of driving chip detects to CPU, CPU judges whether interface is abnormal according to feedback data, and the output end that driving chip is controlled if abnormal is low level, open end Mouthful, if not abnormal, conversely, realizing detection Interface status and carrying out timely security control.Physical circuit is as shown in Fig. 2, originally The technical staff in field can model historically and circuit diagram clearly and completely realize the technical solution of the application；Driving-inspection Drive control is carried out using driving chip in slowdown monitoring circuit, the working performance of driving chip will not belong to because of long-time using reducing It in integrated chip, controls reliability and service life various aspects and is controlled better than simple relay, because being carried out using integrated chip Control, while avoiding the problem that carrying out controlling long-term plug using simple relay leads to surge, avoids using relay control The low disadvantage of safety processed has achieved the effect that accurate control, has simplified circuit, improves safety；The driving chip used simultaneously In addition to drive control function, moreover it is possible to detect electric current, the state of driving port is obtained according to the electric current of detection, will test result feedback To computer, carries out timely on-off control and output is reminded, prevent failure, be conducive to quick misarrangement when failure.

Embodiment 3

Based on embodiment 1, the present embodiment refinement communication and alert circuit, details are as follows:

It further include radio communication circuit, radio communication circuit is connected with hub control circuit, realizes wireless transmission detection State；Communication is using WIFI mode or 4G wireless data sending mode or NB-IoT mode.NB-IoT mode uses NB-IoT wireless module, the model BC95-B5 of use；4G wireless data sending mode uses 4G wireless data transmission module, model MG2639-GPRS-4G, WIFI mode use WiFi module, model MLK-003A；Those skilled in the art can be according to note The model and circuit diagram of load clearly and completely realize the technical solution of the application.

It further include output alert circuit, output alert circuit is connected with hub control circuit, realizes that state is reminded, specifically Circuit is as shown in Figure 1, buzzer output connects 42 pins of CPU.

The utility model will test result, and electronic feedback reminds electricity by output to user's mobile device by wireless communication Road carries out buzzing prompting, and conducive to Interface status or abnormal state information is known in time, prevention surge bring damage is disconnected in time It opens.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (7)

1. a kind of computer USB Communication Hub, including power circuit and hub control circuit, it is characterised in that: further include Driving-detection circuit and protection circuit, the power circuit are hub control circuit, driving-detection circuit and protection circuit Power supply, hub control circuit one end are connect with computer, and the other end and driving-detection circuit control signal connect It connects, the driving-detection circuit control output end is connect with protection circuit input end, and the driving-detection circuit test side connects Connect hub control circuit, the output end connecting hub control circuit of the protection circuit.

2. a kind of computer USB Communication Hub according to claim 1, it is characterised in that: the protection circuit and drive The circuit connection of dynamic-detection circuit is as follows:

Driving-detection circuit control output end is separately connected diode D65, diode D66, diode D67, diode D68 Cathode, diode D65, diode D66, diode D67, diode D68 anode be all connected with switching tube Q37 source electrode, switch Pipe Q37 grounded drain, grid connect diode D54 after connect power supply VCC, diode D65, diode D66, diode D67, The cathode of diode D68 is grounded after being also respectively connected with capacitor C55, capacitor C54, capacitor C53 and capacitor C52, diode D54 cathode It is grounded after being also connected with the capacitor C51 and resistance R198 being connected in parallel.

3. a kind of computer USB Communication Hub according to claim 1, it is characterised in that: the power circuit includes 5V power circuit, circuit connection are as follows: the 5V power circuit includes capacitor C57, voltage stabilizing chip U16, capacitor C129 and electricity Holding C130, Vin pin connects battery-end and the one end capacitor C57, another termination the earth of capacitor C57, and GND pin connects the earth, Output interface is connected behind one end of capacitor C129 and capacitor C130 that the connection of its+5V pin is connected in parallel, output interface is collection Each modular circuit power supply of line device, another termination the earth of the capacitor C129 and capacitor C130 that are connected in parallel.

4. a kind of computer USB Communication Hub according to claim 1, it is characterised in that: the power circuit includes 3.3V power circuit, the 3.3V power circuit includes the filter capacitor C11-C15 for being depressured chip U11 and being connected in parallel, described The IN pin for being depressured chip U11 connects battery-end, exports 3.3V after the end BS, SW, FB connection filter circuit.

5. a kind of computer USB Communication Hub according to claim 1, it is characterised in that: the hub control electricity Road includes CPU, and driving-detection circuit includes driving chip, and the circuit connection of driving chip and CPU are as follows:

3 pin of driving chip connects 48 pins of CPU with INPUT2 pin, and 5 connect 47 pins of CPU with INPUT2 pin, 1,12 pins connect power supply VCC, and 11 pins connect the chip selection signal of main control computer；

Its 7 connect resistance R149 with CURRENT SENSE1 pin after connect 46 pins of CPU, 46 pins of CPU are also connected with string 44 pins of CPU are connected after capacitor C43, the capacitor C44 of connection connection, resistance R149 connects resistance after resistance R223 is connected in series R148, resistance R148 connection capacitor C44, resistance R223 connect capacitor C47,9 and CURRENT after being also connected with resistance R227 SENSE2 pin connects 45 pins of connection CPU after resistance R150, and 45 pins for connecting CPU are also connected with connection electricity after capacitor C47 Hold C44,45 pins for connecting CPU are also connected with 43 pins of connection CPU after resistance R225, resistance R157, and resistance R225 is also connected with Capacitor C44 is connected after resistance R229.

6. a kind of computer USB Communication Hub according to claim 1-5, it is characterised in that: further include nothing Line telecommunication circuit, the radio communication circuit are connected with hub control circuit, realize wireless transmission detecting state；Wireless communication Mode is using WIFI mode or 4G wireless data sending mode or NB-IoT mode.

7. a kind of computer USB Communication Hub according to claim 1-5, it is characterised in that: further include defeated Alert circuit out, the output alert circuit are connected with hub control circuit, realize that state is reminded.