Integrated connecting device for connecting USB (Universal Serial Bus) and sub-equipment

Abstract

The utility model relates to the technical field of electronic equipment connection, in particular to an integrated connecting device for connecting a USB (Universal Serial Bus) and sub-equipment, which comprises a power supply circuit, a bottom plate connector module, a USB concentrator module and an EtherCAT (Ethernet Control Automation Technology) chained topology module, the power supply module is used for supplying power to the power supply circuit, the bottom plate connector module, the USB hub module and the EtherCAT chain topology module; the bottom plate connector module comprises a connector CN1, a connector CN2, a connector CN3, a connector CN4, a connector CN5, a connector CN6 and a connector CN7; and the USB hub module comprises a first USB hub U3 and a second USB hub U4. According to the utility model, the structure is novel, through integration of USB and EtherCAT connection and power supply management functions, complexity of multi-device connection and power supply and wiring difficulty are substantially reduced, and reliability and flexibility of connection are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment connection technical field especially is a kind of integrated connection device for USB and sub-device connection. BACKGROUND

[0002] In the prior art, the connection of computers and various devices faces many challenges. The USB2.0 hub limits its expansion capability and power supply efficiency due to the excessive number of USB cables and limited power supply. Meanwhile, the EtherCAT slave device requires independent network cable and power cable, which not only increases the connection complexity, but also exacerbates the wiring difficulty in limited space. With the increase in the number of devices, cable chaos and difficulty in management have become a problem that needs to be solved urgently. Therefore, there is an urgent need for an innovative solution to simplify the connection, reduce the number of cables and improve the power supply efficiency. SUMMARY

[0003] The utility model provides a kind of integrated connection device for USB and sub-device connection to the prior art problem, novel structure, by integrating USB, EtherCAT connection and power management function, significantly reduce the complexity and wiring difficulty of multiple device connection and power supply, improve the reliability and flexibility of connection.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model provides a kind of integrated connection device for USB and sub-device connection, it includes power supply circuit, bottom plate connector module, USB hub module and EtherCAT chain topology module;The power module is used to power supply circuit, bottom plate connector module, USB hub module and EtherCAT chain topology module;

[0006] The bottom plate connector module includes connector CN1, connector CN2, connector CN3, connector CN4, connector CN5, connector CN6 and connector CN7, and the connector CN1, connector CN2, connector CN3, connector CN4, connector CN5, connector CN6 and connector CN7 are sequentially connected in front and back level signal;

[0007] The USB hub module includes first USB hub U3 and second USB hub U4, the connector CN1, connector CN2 and connector CN3 are connected with the first USB hub U3 respectively, the first USB hub U3 is connected with the second USB hub U4, and the second USB hub U4 is connected with the connector CN4, connector CN5, connector CN6 and connector CN7 respectively;

[0008] The EtherCAT chain topology module includes a network interface RJ45, an analog switch U5, an analog switch U6, an analog switch U7, an analog switch U8, an analog switch U9 and an analog switch U10, the network interface RJ45 is connected with the connector CN1, the analog switch U5 is connected between the connector CN1 and the connector CN2, the analog switch U6 is connected between the connector CN2 and the connector CN3, the analog switch U7 is connected between the connector CN3 and the connector CN4, the analog switch U8 is connected between the connector CN4 and the connector CN5, the analog switch U9 is connected between the connector CN5 and the connector CN6, and the analog switch U10 is connected between the connector CN6 and the connector CN7.

[0009] The power supply circuit includes a fuse F6, a fuse F7, a fuse F8, a fuse F9, a diode D1, a BUCK voltage reduction chip U1, an LDO chip U2, a capacitor C1, a capacitor C2, a capacitor C3 and a voltage stabilizing diode D2, the fuse F6 is connected with the fuse F7 in parallel, an external 24V power supply is connected with the cathode of the diode D1 and the input end of the BUCK voltage reduction chip U1 after passing through the fuse F6 and the fuse F7, the anode of the diode D1 is grounded, the output end of the BUCK voltage reduction chip U1 is connected with one end of the capacitor C1 and the input end of the LDO chip U2, the other end of the capacitor C1 is connected, the fuse F8 is connected with the fuse F9 in parallel, the output end of the LDO chip U2 is connected with one end of the capacitor C2 and one end of the fuse F9, the other end of the capacitor C2 is grounded, the other end of the fuse F9 is connected with one end of the capacitor C3 and the cathode of the voltage stabilizing diode D2, the other end of the capacitor C3 and the anode of the voltage stabilizing diode D2 are grounded.

[0010] The model of the LDO chip U2 is AZ1117-3.3.

[0011] The USB hub module further includes a transient voltage suppression diode TVS1, and an external 5V power supply supplies power for the first USB hub U3 and the second USB hub U4 after passing through the transient voltage suppression diode TVS1.

[0012] The first USB hub U3 is provided with a PSEFL pin, and the PSEFL pin of the first USB hub U3 is connected with a resistor R14 with a resistance of 4.7KΩ.

[0013] The second USB hub U4 is provided with a PSEFL pin, and the PSEFL pin of the second USB hub U3 is connected with a resistor R28 with a resistance of 4.7KΩ.

[0014] The DP4 pin of the first USB hub U3 is connected with the DP0 pin of the second USB hub U4, and the DM4 pin of the first USB hub U3 is connected with the DM0 pin of the second USB hub U4.

[0015] The DP1 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN1, and the DM1 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN1.

[0016] The DP2 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN2, and the DM2 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN2.

[0017] The DP3 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN3, and the DM3 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN3.

[0018] The DP1 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN4, and the DM1 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN4.

[0019] The DP2 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN5, and the DM2 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN5.

[0020] The DP3 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN6, and the DM3 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN6.

[0021] The DP4 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN7, and the DM4 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN7.

[0022] The TD+ pin of the network interface RJ45 is connected with the B6 pin of the connector CN1 and the S3 pin of the analog switch U5, the TD- pin of the network interface RJ45 is connected with the B7 pin of the connector CN1 and the S4 pin of the analog switch U5, the RD+ pin of the network interface RJ45 is connected with the B14 pin of the connector CN1 and the S1 pin of the analog switch U5, and the RD- pin of the network interface RJ45 is connected with the B15 pin of the connector CN1 and the S2 pin of the analog switch U5.

[0023] The beneficial effects of this utility model are:

[0024] This utility model features a novel structure and ingenious design. The baseboard connector module comprises seven connectors (CN1 to CN7), which are sequentially connected to each other for signal transmission, enabling the connection of multiple devices. The USB hub module includes a first USB hub U3 and a second USB hub U4, which connect to multiple USB devices via the baseboard connector module. The second USB hub U4 is cascaded through the downstream interface of the first USB hub U3, allowing up to seven devices to connect to the computer. The EtherCAT chain topology module includes an RJ45 network cable interface and seven analog switches (U5 to U10) for chained connection of EtherCAT slave stations. The RJ45 network cable interface is sequentially connected to connectors CN1 to CN7 via analog switches. When a connector is inserted into the PCBA board, the analog switches disconnect the signals from the preceding and following stages, achieving a chained EtherCAT network topology. This utility model improves the convenience, reliability, and flexibility of multi-device connection and power supply, reduces wiring difficulty and maintenance costs, and brings significant innovation and improvement to the connection technology between computers and devices. Attached Figure Description

[0025] Fig. 1 This is a circuit diagram of a power supply circuit for an integrated connection device for USB and sub-device connection according to the present invention.

[0026] Fig. 2 This is a circuit diagram of a baseboard connector module for an integrated connection device used for USB and sub-device connection according to the present invention.

[0027] Fig. 3 This is a circuit diagram of a USB hub module for an integrated connection device used for USB and sub-device connection according to the present invention.

[0028] Fig. 4 This is a circuit diagram of an EtherCAT chain topology module for an integrated connection device used for USB and sub-device connection according to the present invention. Detailed Implementation

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0030] An integrated connectivity device for USB and daughter device connections, such as Figs. 1 to 4As shown, it includes a power supply circuit, a backplane connector module, a USB hub module and an EtherCAT chain topology module; the power supply module is used for powering the power supply circuit, the backplane connector module, the USB hub module and the EtherCAT chain topology module;

[0031] The backplane connector module includes connectors CN1, CN2, CN3, CN4, CN5, CN6 and CN7, which are sequentially connected in front and back signal connection;

[0032] The USB hub module includes first and second USB hubs U3 and U4, the connectors CN1, CN2 and CN3 are connected with the first USB hub U3, the first USB hub U3 is connected with the second USB hub U4, and the second USB hub U4 is connected with the connectors CN4, CN5, CN6 and CN7 respectively;

[0033] The EtherCAT chain topology module includes a network interface RJ45, analog switches U5, U6, U7, U8, U9 and U10, the network interface RJ45 is connected with the connector CN1 in signal connection, the analog switch U5 is connected between the connectors CN1 and CN2, the analog switch U6 is connected between the connectors CN2 and CN3, the analog switch U7 is connected between the connectors CN3 and CN4, the analog switch U8 is connected between the connectors CN4 and CN5, the analog switch U9 is connected between the connectors CN5 and CN6, and the analog switch U10 is connected between the connectors CN6 and CN7.

[0034] Specifically, the bottom connector module in the embodiment of the application: contains seven connectors (CN1 to CN7), the connectors adopt PCIex1 (PCIe-36p, straight insertion), and the connectors are sequentially connected in front and back stages and are used for connecting multiple devices; the USB hub module: contains a first USB hub U3 and a second USB hub U4, and is connected with multiple USB devices through the bottom connector module; the second USB hub U4 is connected in cascade through a downstream interface of the first USB hub U3, and together realizes the connection of up to 7 devices with a computer; the EtherCAT chain topology module: contains a network interface RJ45 and seven analog switches (U5 to U10), and is used for realizing the chain connection of EtherCAT slave stations; the network interface RJ45 is sequentially connected with the connectors CN1 to CN7 through the analog switches, when the connectors are inserted into the PCBA board card, the analog switches disconnect the front and back stage signals, and realize the chain EtherCAT network topology; the embodiment of the application improves the convenience, reliability and flexibility of multi-device connection and power supply, reduces the wiring difficulty and maintenance cost, and brings significant innovation and improvement for the connection technology between the computer and the devices.

[0035] In the embodiment of the application, the power supply circuit includes a fuse F6, a fuse F7, a fuse F8, a fuse F9, a diode D1, a BUCK voltage reduction chip U1, an LDO chip U2, a capacitor C1, a capacitor C2, a capacitor C3 and a voltage stabilizing diode D2, the fuse F6 is connected in parallel with the fuse F7, an external 24V power supply input is connected with the cathode of the diode D1 and the input end of the BUCK voltage reduction chip U1 after passing through the fuse F6 and the fuse F7, the anode of the diode D1 is grounded, the output end of the BUCK voltage reduction chip U1 is connected with one end of the capacitor C1 and the input end of the LDO chip U2, the other end of the capacitor C1 is connected, the fuse F8 is connected in parallel with the fuse F9, the output end of the LDO chip U2 is connected with one end of the capacitor C2 and one end of the fuse F9, the other end of the capacitor C2 is grounded, the other end of the fuse F9 is connected with one end of the capacitor C3 and the cathode of the voltage stabilizing diode D2, the other end of the capacitor C3 and the anode of the voltage stabilizing diode D2 are grounded; wherein, the model of the LDO chip U2 is AZ1117-3.3. Specifically, after the external 24V power supply input, overcurrent protection is performed through the fuses F6 and F7, and overvoltage protection is performed through the diode D1; then, the voltage is converted to 5V through the BUCK voltage reduction chip U1, and then the voltage is converted to 3.3V through the LDO chip U2 (AZ1117-3.3), to supply power for the bottom connector module, the USB hub module and the EtherCAT chain topology module; wherein, the filter and voltage stabilizing circuit composed of the capacitor C1, the capacitor C2, the capacitor C3 and the voltage stabilizing diode D2 ensures the stability of the voltage.

[0036] In the embodiment of the present application, the USB hub module further comprises a transient voltage suppression diode TVS1, and the external 5V power supply supplies power to the first USB hub U3 and the second USB hub U4 via the transient voltage suppression diode TVS1. Specifically, the transient voltage suppression diode TVS1 is used to protect the USB signal from voltage impact.

[0037] In the embodiment of the present application, the first USB hub U3 is provided with a PSEFL pin, and the PSEFL pin of the first USB hub U3 is connected with a resistor R14 with a resistance of 4.7KΩ; wherein the second USB hub U4 is provided with a PSEFL pin, and the PSEFL pin of the second USB hub U3 is connected with a resistor R28 with a resistance of 4.7KΩ. Specifically, the PSEFL pin of the first USB hub U3 is pulled up to 3.3V through the 4.7KΩ resistor, realizing self-power supply; the second USB hub U4 is also provided with a PSEFL pin and a 4.7KΩ resistor, connected in cascade through the downstream interface of the first USB hub U3, to realize the connection of up to 7 USB devices with the computer.

[0038] In the embodiment of the present application, the DP4 pin of the first USB hub U3 is connected with the DP0 pin of the second USB hub U4, and the DM4 pin of the first USB hub U3 is connected with the DM0 pin of the second USB hub U4;

[0039] The DP1 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN1, and the DM1 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN1;

[0040] The DP2 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN2, and the DM2 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN2;

[0041] The DP3 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN3, and the DM3 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN3;

[0042] The DP1 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN4, and the DM1 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN4;

[0043] The DP2 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN5, and the DM2 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN5;

[0044] The DP3 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN6, and the DM3 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN6;

[0045] The DP4 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN7, and the DM4 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN7.

[0046] In the embodiment of the application, the TD+ pin of the network interface RJ45 is connected with the B6 pin of the connector CN1 and the S3 pin of the analog switch U5, the TD- pin of the network interface RJ45 is connected with the B7 pin of the connector CN1 and the S4 pin of the analog switch U5, the RD+ pin of the network interface RJ45 is connected with the B14 pin of the connector CN1 and the S1 pin of the analog switch U5, and the RD- pin of the network interface RJ45 is connected with the B15 pin of the connector CN1 and the S2 pin of the analog switch U5.

[0047] Specifically, in the embodiment of the application, 4) D+ / D- is a downstream signal of the USB hub, used for communication with the PCBA on the PCIE (i.e. communication between the seven connectors CN1 to CN7 of the backplane connector module); TX+ / TX- / RX+ / RX- is a group of 10 / 100M Ethernet transceiving signals, used for realizing the chain slave station topology of EtherCAT; one Ethernet input, RJ45 as the network cable connection, analog switch as the bridge connection to the seven connectors of the backplane connector module. The circuit working principle is: when the PCIE connector is not inserted into the PCBA card, the U5 to U10 analog switch enable is pulled up, the 10 / 100M signal (TX+ / TX- / RX+ / RX-) of the network cable is connected to the rear stage 10 / 100M signal of the first PCIE connector in turn, the rear stage 10 / 100M signal of the first PCIE connector is connected to the front stage 10 / 100M signal of the second PCIE connector in turn, and so on, and the PCBA card not inserted will be connected to the front and rear stage 10 / 100M signals, at this time all the 10 / 100M signals are connected together; when the PCIE connector is inserted into the PCBA card, Pn_SEL# is grounded by the PCBA, at this time the analog switch is cut off, at this time the front and rear stage 10 / 100M signals are disconnected, at this time the network cable is connected to a group of 10 / 100M signals by the PCBA card, and a group of 10 / 100M signals is connected out, and the data of the rear stage is forwarded by the EtherCAT slave station; when the PCIE connector has the PCBA card, no matter how many PCBA cards are inserted, the PCBA inserted into the most front connector is connected to the 10 / 100M signal of the network cable, a group of 10 / 100M signals is connected out at the rear stage, the front stage 10 / 100M signal of the PCBA inserted into the second most front connector is connected to the rear stage 10 / 100M signal of the PCBA card inserted into the first most front connector, that is, no matter how many PCBA cards are inserted, the front stage of the inserted PCBA card is connected to the previous PCBA card or the network cable, and the rear stage of the inserted PCBA card is connected to the next PCBA card, forming a chain EtherCA network topology, and completing the communication demand of the master station to all slave stations.

[0048] The above is only the preferred embodiment of the application, and does not limit the application in any form. Although the application is disclosed in the preferred embodiment, it is not intended to limit the application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the technical solution of the application, and any simple modification, equivalent change and modification of the above embodiment are within the scope of the technical solution of the application.

Claims

1. An integrated connection device for USB and sub-device connections, characterized by: The power supply circuit, the bottom plate connector module, the USB hub module and the EtherCAT chain topology module are powered by the power supply module. The bottom plate connector module comprises connectors CN1, CN2, CN3, CN4, CN5, CN6 and CN7, which are sequentially connected in signal. The USB hub module comprises first and second USB hubs U3 and U4, the connectors CN1, CN2 and CN3 are connected to the first USB hub U3, the first USB hub U3 is connected to the second USB hub U4, and the second USB hub U4 is connected to the connectors CN4, CN5, CN6 and CN7. The EtherCAT chain topology module comprises a network interface RJ45, analog switches U5, U6, U7, U8, U9 and U10, the network interface RJ45 is connected to the connector CN1 in signal, the analog switch U5 is connected between the connectors CN1 and CN2, the analog switch U6 is connected between the connectors CN2 and CN3, the analog switch U7 is connected between the connectors CN3 and CN4, the analog switch U8 is connected between the connectors CN4 and CN5, the analog switch U9 is connected between the connectors CN5 and CN6, and the analog switch U10 is connected between the connectors CN6 and CN7.

2. An integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The power supply circuit comprises fuse tubes F6, F7, F8, F9, a diode D1, a BUCK step-down chip U1, an LDO chip U2, capacitors C1, C2, C3 and a stabilizing diode D2, the fuse tubes F6 and F7 are connected in parallel, an external 24V power supply input is connected to the cathode of the diode D1 and the input end of the BUCK step-down chip U1 via the fuse tubes F6 and F7, the anode of the diode D1 is grounded, the output end of the BUCK step-down chip U1 is connected to one end of the capacitor C1 and the input end of the LDO chip U2, the other end of the capacitor C1 is connected, the fuse tubes F8 and F9 are connected in parallel, the output end of the LDO chip U2 is connected to one end of the capacitor C2 and one end of the fuse tube F9, the other end of the capacitor C2 is grounded, the other end of the fuse tube F9 is connected to one end of the capacitor C3 and the cathode of the stabilizing diode D2, and the other end of the capacitor C3 and the anode of the stabilizing diode D2 are grounded.

3. An integrated connection device for USB and sub-device connections according to claim 2, characterized in that: The model of the LDO chip U2 is AZ1117-3.

3.

4. The integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The USB hub module further comprises a transient voltage suppression diode TVS1, and an external 5V power supply supplies power to the first USB hub U3 and the second USB hub U4 via the transient voltage suppression diode TVS1.

5. The integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The first USB hub U3 is provided with a PSEFL pin, and the PSEFL pin of the first USB hub U3 is connected with a resistor R14 with a resistance of 4.7KΩ.

6. The integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The second USB hub U4 is provided with a PSEFL pin, and the PSEFL pin of the second USB hub U3 is connected with a resistor R28 with a resistance of 4.7KΩ.

7. The integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The DP4 pin of the first USB hub U3 is connected with the DP0 pin of the second USB hub U4, and the DM4 pin of the first USB hub U3 is connected with the DM0 pin of the second USB hub U4. The DP1 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN1, and the DM1 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN1. The DP2 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN2, and the DM2 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN2. The DP3 pin of the first USB hub U3 is connected with the A9 pin and the B9 pin of the connector CN3, and the DM3 pin of the first USB hub U3 is connected with the A8 pin and the B8 pin of the connector CN3. The DP1 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN4, and the DM1 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN4. The DP2 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN5, and the DM2 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN5. The DP3 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN6, and the DM3 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN6. The DP4 pin of the second USB hub U4 is connected with the A9 pin and the B9 pin of the connector CN7, and the DM4 pin of the second USB hub U4 is connected with the A8 pin and the B8 pin of the connector CN7.

8. The integrated connection device for USB and sub-device connection according to claim 1, characterized in that: The TD+ pin of the RJ45 network interface is connected with the B6 pin of the connector CN1 and the S3 pin of the analog switch U5, the TD- pin of the RJ45 network interface is connected with the B7 pin of the connector CN1 and the S4 pin of the analog switch U5, the RD+ pin of the RJ45 network interface is connected with the B14 pin of the connector CN1 and the S1 pin of the analog switch U5, and the RD- pin of the RJ45 network interface is connected with the B15 pin of the connector CN1 and the S2 pin of the analog switch U5.

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