On-off controllable USB expansion interface

Abstract

The utility model discloses an on-off controllable USB expansion interface which comprises a circuit board, and a main control chip circuit, a CAN communication circuit, a relay circuit, a USB expansion circuit, a power conversion circuit and a USB2.0 interface circuit are integrated on the circuit board. Wherein the relay circuit is electrically connected with the USB expansion circuit, the main control chip circuit and the USB2.0 interface circuit respectively; and the CAN communication circuit is electrically connected with the main control chip circuit. According to the on-off controllable USB expansion interface of the utility model, the standard CAN communication protocol is utilized to realize more accurate and efficient control of the USB interface, so that the working state (on or off) of the USB port can be dynamically adjusted according to actual requirements without physical contact, and the stability and reliability of the whole system can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of USB interface control of electronic equipment, in particular to an on-off controllable USB expansion interface. Background Art

[0002] As electronic devices become increasingly versatile, the USB interface, as a crucial component of the Universal Serial Bus (USB), plays an irreplaceable role in data transmission and charging. However, in practice, particularly in industrial control and automotive electronics, there's a frequent need for flexible USB interface control. For example, when multiple USB devices share limited ports, or to protect sensitive hardware from damage due to improper operation, ensuring secure USB connection and disconnection becomes crucial. These demands are driving the development of intelligent USB interface control technology, while also giving rise to a host of new solutions and technical challenges.

[0003] Specific solutions in existing technologies: Currently, some products on the market can achieve selective power supply to USB ports through software commands. However, these solutions are generally complex, require specially designed circuit support, and often can only control the status changes of individual USB ports. Another type of solution is to manually cut off the power supply to the USB port using a mechanical switch. Although this method is simple and effective, it is not suitable for more automated application scenarios and cannot meet the requirements of modern industrial production efficiency.

[0004] Deficiencies of existing technologies: Existing USB interface control technologies generally have problems such as slow response speed, insufficient flexibility, high cost, and limited ability to adapt to specific environments; especially in applications that require fast switching or remote control, existing solutions cannot well meet the diverse needs of users. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a USB expansion interface with controllable on / off.

[0006] The utility model provides a USB expansion interface with controllable on / off, comprising a circuit board, on which a main control chip circuit, a CAN communication circuit, a relay circuit, a USB expansion circuit, a power conversion circuit and a USB2.0 interface circuit are integrated; wherein the relay circuit is electrically connected to the USB expansion circuit, the main control chip circuit and the USB2.0 interface circuit respectively; and the CAN communication circuit is electrically connected to the main control chip circuit.

[0007] Furthermore, the power conversion circuit includes a power interface circuit and a voltage stabilizing circuit connected thereto; wherein,

[0008] The power interface circuit uses a Type-C female connector with model number KH-TYPE-C-16P as a USB power input interface, which is electrically connected to the USB expansion circuit and the relay circuit;

[0009] The voltage stabilizing circuit uses a voltage stabilizer of model XC6201P332PR-G to convert 5V voltage into 3.3V voltage output, and is electrically connected to the main control chip circuit to power the system.

[0010] Furthermore, the model of the main control chip of the main control chip circuit is GD32A503VDT3.

[0011] Furthermore, the USB expansion circuit is used to expand 1-way USB to 4-way USB, and its chip model is CH334R.

[0012] Furthermore, the USB2.0 interface circuit includes four USB expansion interfaces as USB outputs; the relay circuit is composed of a plurality of independently working relay units connected in series, and each relay unit controls the on / off state of a corresponding USB expansion interface.

[0013] Furthermore, the chip model of the CAN communication circuit is SIT1044T / 3.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The on-off controllable USB expansion interface of the utility model utilizes the standard CAN communication protocol to achieve more precise and efficient control of the USB interface, making it possible to dynamically adjust the working state of the USB port (on or off) according to actual needs without physical contact, and ensuring the stability and reliability of the entire system;

[0016] (1) The on / off function of the USB interface is controlled through CAN messages, which improves the convenience and safety of using the USB port;

[0017] (2) Reduces the risk of damage to the USB interface due to frequent physical plugging and unplugging, thus extending the life of the device;

[0018] (3) The system's ability to adapt to changes in the external environment has been enhanced, and it can better meet the needs of various application scenarios.

[0019] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0020] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 A structural block diagram of an on-off controllable USB expansion interface provided by an embodiment of the utility model;

[0023] Figure 2 This is the circuit schematic diagram of the main control chip circuit;

[0024] Figure 3 This is the circuit schematic diagram of the CAN communication circuit;

[0025] Figure 4 This is the circuit schematic diagram of the relay circuit;

[0026] Figure 5 This is the circuit schematic diagram of the USB expansion circuit;

[0027] Figure 6 This is a circuit schematic diagram of a power conversion circuit;

[0028] Figure 7 This is the circuit schematic diagram of the USB2.0 interface circuit. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Please refer to Figures 1 to 7 The embodiment of the utility model provides a USB expansion interface with controllable on / off, which is mainly suitable for product function testing scenarios where USB port multiplexing is required and is suitable for scenarios where the USB interface needs to be frequently plugged in and out. The circuit board includes a main control chip circuit, a CAN communication circuit, a relay circuit, a USB expansion circuit, a power conversion circuit and a USB2.0 interface circuit.

[0032] Among them, the relay circuit is electrically connected to the USB expansion circuit, the main control chip circuit and the USB2.0 interface circuit respectively; the CAN communication circuit is electrically connected to the main control chip circuit.

[0033] In a preferred embodiment, the model of the main control chip of the main control chip circuit is GD32A503VDT3;

[0034] Among them, the main control chip is responsible for receiving and parsing the CAN message commands in a specified format sent from the external device, and after processing, it drives the relay at the corresponding position to operate, that is, outputs the control signal of the relay.

[0035] Preferably, the chip model of the CAN communication circuit is SIT1044T / 3; the CAN communication circuit realizes a two-way data exchange function with other devices.

[0036] In a preferred embodiment, the USB2.0 interface circuit includes four USB expansion interfaces as USB outputs; the relay circuit is composed of multiple independently working relay units connected in series, and each relay unit controls the on / off state of a corresponding USB expansion interface;

[0037] Preferably, the USB expansion circuit is used to expand a single USB port to a four-channel USB port, and its chip model is CH334R; the USB expansion circuit provides a standardized USB port that can actually be used for peripheral device access.

[0038] In a preferred embodiment, the power conversion circuit includes a power interface circuit and a voltage stabilizing circuit electrically connected thereto; wherein,

[0039] The power interface circuit uses a Type-C female connector model KH-TYPE-C-16P as a USB power input interface, which is electrically connected to the USB expansion circuit and the relay circuit;

[0040] The voltage stabilization circuit uses a voltage regulator model XC6201P332PR-G to convert 5V voltage into 3.3V voltage output, and is electrically connected to the main control chip circuit to power the system.

[0041] In addition, wireless communication technology, such as Bluetooth or Wi-Fi, can be introduced as an auxiliary means, which can break through the physical distance limitation and allow more convenient remote control of the state transition of the USB interface.

[0042] The technical solution of this utility model utilizes the standard CAN communication protocol to achieve more accurate and efficient control of the USB interface, so that the working state of the USB port (open or close) can be dynamically adjusted according to actual needs without physical contact, and the stability and reliability of the entire system are ensured, and the following beneficial effects are achieved:

[0043] 1) The on / off function of the USB interface is controlled through CAN messages, which improves the convenience and safety of using the USB port.

[0044] 2) Reduces the risk of damage to the USB interface due to frequent physical plugging and unplugging, extending the life of the device.

[0045] 3) The system's adaptability to changes in the external environment has been enhanced, and it can better meet the needs of various application scenarios.

[0046] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] Throughout this specification, terms such as "one embodiment" or "some embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A USB expansion interface with controllable on / off function, characterized in that: It includes a circuit board, on which a main control chip circuit, a CAN communication circuit, a relay circuit, a USB expansion circuit, a power conversion circuit and a USB2.0 interface circuit are integrated; wherein the relay circuit is electrically connected to the USB expansion circuit, the main control chip circuit and the USB2.0 interface circuit respectively; the CAN communication circuit is electrically connected to the main control chip circuit.

2. The on-off controllable USB expansion interface according to claim 1, characterized in that: The power conversion circuit includes a power interface circuit and a voltage stabilizing circuit connected thereto; wherein, The power interface circuit uses a Type-C female connector with model number KH-TYPE-C-16P as a USB power input interface, which is electrically connected to the USB expansion circuit and the relay circuit; The voltage stabilizing circuit uses a voltage stabilizer of model XC6201P332PR-G to convert 5V voltage into 3.3V voltage output, and is electrically connected to the main control chip circuit to power the system.

3. The on-off controllable USB expansion interface according to claim 1, characterized in that: The model of the main control chip of the main control chip circuit is GD32A503VDT3.

4. The on-off controllable USB expansion interface according to claim 1, characterized in that: The USB expansion circuit is used to expand a single USB channel to a four-channel USB channel, and its chip model is CH334R.

5. The on-off controllable USB expansion interface according to claim 1, characterized in that: The USB2.0 interface circuit includes four USB expansion interfaces as USB outputs; the relay circuit is composed of a plurality of independently working relay units connected in series, and each relay unit controls the on / off state of a corresponding USB expansion interface.

6. The on-off controllable USB expansion interface according to claim 1, characterized in that: The chip model of the CAN communication circuit is SIT1044T / 3.

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