USB channel detection device

Abstract

The utility model provides a universal serial bus (USB) channel detection device, which comprises a USB input module which is connected with equipment to be detected and transmits a signal source to a USB SWITCH module, the USB SWITCH module which controls on-off of USB2.0DP / DM and USB3.0 RX / TX signal channels, a selection module which controls gating of the USB2.0DP / DM or USB3.0 RX / TX signal channels in the USB SWITCH module, and a USB output module which is connected with the equipment to be detected, receives signals of the USB SWITCH module and transmits the signals back to the equipment to be detected. And the power supply module is used for providing working voltage for the USB input module, the USB SWITCH module, the selection module and the signal source. The device can detect whether the USB3.0 channel and the USB2.0 channel of the USB3.0 interface are normal or not, and is simple in structure, small in size, low in cost, easy to manufacture and use and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a USB channel detection device. Background Art

[0002] USB is the abbreviation of Universal Serial Bus. USB interface is widely used in electronic devices such as computers and mobile phones. USB has developed from the original USB1.0 to USB2.0, USB3.0, USB3.1, and even USB4.0. At present, the USB3.0 interface has become a standard product in the field of smart TVs and commercial large-screen displays. Especially on commercial large-screen displays, there are many related products using the USB3.0 interface. The USB3.0 interface on these products mainly has the form of front interface board, side interface board and mainboard onboard.

[0003] In the development and production stages, in order to ensure normal functions and product quality, manufacturers will test the above USB interfaces to ensure that both USB3.0 and USB2.0 channels function normally. The prior art usually uses a USB flash drive for testing. For devices with a WINDOWS operating system installed, relevant software can be used to check whether the connected USB flash drive works based on the USB3.0 protocol or the USB2.0 protocol. However, the hardware devices corresponding to the WINDOWS system are usually personal computers, and for devices such as smart TVs and commercial large-screen displays, their operating systems are mostly based on the Android operating system, so it is difficult to apply the relevant software in the WINDOWS system. Currently, there is a lack of software for identifying USB device protocols.

[0004] Therefore, for devices such as smart TVs and large commercial display screens, how to quickly detect whether the USB3.0 channel and USB2.0 channel of the device's USB3.0 interface can work normally is still an urgent problem to be solved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a USB channel detection device, which specifically includes:

[0006] A USB input module configured to connect to the device under test and transmit the signal source to the USB SWITCH module;

[0007] USB SWITCH module, which is configured to control the on / off of USB2.0 DP / DM signal channels and USB3.0 RX / TX signal channels;

[0008] A selection module configured to control the selection of a USB2.0 DP / DM signal channel or a USB3.0 RX / TX signal channel in a USB SWITCH module;

[0009] A USB output module, which is configured to connect to the device under test, receive the signal from the USB SWITCH module and transmit it back to the device under test;

[0010] The power module is configured to provide operating voltage to the USB input module, the USB SWITCH module, the selection module and the signal source.

[0011] Furthermore, the USB SWITCH module includes a USB2.0 SWITCH module and a USB3.0 SWITCH module. The USB2.0 SWITCH module controls the on / off of the USB2.0 DP / DM signal channel, and the USB3.0 SWITCH module controls the on / off of the USB3.0 RX / TX signal channel.

[0012] Further, the selection module includes a first selection module and a second selection module;

[0013] The first selection module controls the on / off of the USB2.0 DP / DM signal channel in the USB SWITCH module by transmitting a first control signal to the USB SWITCH module;

[0014] The second selection module controls the on / off of the USB3.0 RX / TX signal channel in the USB SWITCH module by transmitting a second control signal to the USB SWITCH module.

[0015] Furthermore, the selection module includes:

[0016] A control switch K1, wherein pin 3 is connected to a power source via a resistor R1, pin 2 is connected to one end of a capacitor C1 and a first end of a resistor R2, pin 1 is connected to the other end of the capacitor C1 and to ground, and pins 4 and 5 are grounded;

[0017] The second end of the resistor R2 is connected to the base of the transistor Q1;

[0018] The collector of transistor Q1 is connected to the power supply through resistor R3;

[0019] The collector of the transistor Q1 serves as an output terminal of the first control signal or the second control signal;

[0020] The emitter of transistor Q1 is grounded.

[0021] Beneficial effects:

[0022] 1. The device provided by the utility model can detect and judge whether the USB3.0 channel and the USB2.0 channel of the USB3.0 interface are working normally.

[0023] 2. The device provided by the utility model is easy to use, and can enable operators to achieve rapid detection and improve detection efficiency: the detection personnel only need to connect the detection device to the device under test, and then control the on and off of the USB2.0 and USB3.0 channels by toggling the switch to quickly determine whether the USB corresponding channel function of the device under test is normal, and the detection device provided by the utility model only needs to be plugged in and out once during the detection process, which is convenient and fast, simple to operate, and the results are easy to judge.

[0024] 3. The device provided by the utility model has a simple structure, a small size, is easy to manufacture and has a low manufacturing cost.

[0025] 4. The device provided by the utility model has a wide range of applications and can be widely used in Android device products with USB 3.0 interfaces, such as smart TVs and large commercial display screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic block diagram of the principle of the first embodiment of the present utility model;

[0027] Figure 2 This is a schematic block diagram of the circuit structure of the first selection module or the second selection module of the second embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The specific implementation methods are only used to explain the present invention and are therefore only examples, and cannot be used to limit the protection scope of the present invention.

[0029] Embodiment 1:

[0030] like Figure 1 As shown, a USB channel detection device provided by the utility model mainly includes a power module, a USB input module, a selection module, a USB SWITCH module, and a USB output module in the frame.

[0031] The USB port of the detected device provides a 5V input power supply, and the power module converts the input power supply into the operating voltage required by the USB input module, the selection module, the USB SWITCH module and the USB3.0 signal source. In this embodiment, the power module is mainly composed of a step-down DCDC circuit or an LDO circuit, and outputs +5V and +3.3V.

[0032] The USB input module provides a connection port, which is a USB3.0 female socket in this embodiment, and a USB3.0 U disk signal source for connection detection. Of course, other forms of connection ports and USB3.0 signal sources can also be used; the USB input module transmits the USB signal to the USB SWITCH module, and the USB signal includes a USB2.0 DP / DM signal (DP: USB DataPositive, i.e., a positive data signal; DM: USB DataMinus, i.e., a negative data signal) and a USB3.0 RX / TX signal (RX: Receive, i.e., receive; TX: Transmit, i.e., send).

[0033] The USB SWITCH module consists of a USB2.0 SWITCH module and a USB3.0 SWITCH module. These two modules control the on / off of the USB2.0 DP / DM signal transmission channel and the USB3.0 RX / TX signal transmission channel respectively.

[0034] The selection module includes a first selection module and a second selection module. The first selection module controls the on and off of the USB2.0 DP / DM signal channel in the USB SWITCH module by transmitting a first control signal to the USB SWITCH module; the second selection module controls the on and off of the USB3.0 RX / TX signal channel in the USB SWITCH module by transmitting a second control signal to the USB SWITCH module. For example, when the first control signal received by the USB SWITCH module is at a high level, the signal channel of the USB2.0 SWITCH module is connected; when the first control signal received by the USB SWITCH module is at a low level, the signal channel of the USB2.0 SWITCH module is turned off. When the second control signal received by the USB SWITCH module is at a high level, the signal channel of the USB3.0 SWITCH module is connected; when the second control signal received by the USB SWITCH module is at a low level, the signal channel of the USB3.0 SWITCH module is turned off.

[0035] The USB output module is used to connect to the device under test, receive the signal from the USB SWITCH module and transmit it back to the device under test. The USB output module adopts the USB3.0 male terminal form, and is connected to the USB3.0 channel of the device under test through this USB3.0 male terminal during detection.

[0036] During detection, the USB channel detection device provided by the utility model is inserted into the USB interface of the device to be tested, and a control signal is transmitted to the USB SWITCH module through the selection module.

[0037] When the signal channel in the USB2.0 SWITCH functional module is turned on and the signal channel in the USB3.0 SWITCH functional module is turned off, if the device under test recognizes the USB signal source connected to the USB channel detection device provided by the utility model, it means that the USB2.0 channel function is normal.

[0038] Similarly, when the signal channel in the USB3.0 SWITCH functional module is turned on and the signal channel in the USB2.0 SWITCH functional module is turned off, if the device under test recognizes the USB signal source connected to the USB channel detection device provided by the utility model, it means that the USB3.0 channel function is normal.

[0039] Embodiment 2:

[0040] This embodiment is further explained on the basis of the first embodiment, and the same parts as the first embodiment are not repeated here.

[0041] like Figure 2 As shown, this embodiment provides an implementation of the selection module, that is, a combination of two sets of single-pole double-throw toggle switches and transistors, wherein:

[0042] The control switch K1 has a pin 3 connected to the power supply through a resistor R1, a pin 2 connected to one end of the capacitor C1 and a first end of the resistor R2, a pin 1 connected to the other end of the capacitor C1 and grounded, and pins 4 and 5 are fixed pins of the toggle switch and both are grounded;

[0043] The second end of the resistor R2 is connected to the base of the transistor Q1;

[0044] The collector of transistor Q1 is connected to the power supply through resistor R3;

[0045] The collector of the transistor Q1 serves as an output terminal of the first control signal or the second control signal;

[0046] The emitter of transistor Q1 is grounded.

[0047] The transistor Q1 selected here is MMBT3904.

[0048] By toggling the position of the control switch K1, two sets of independent high and low level first control signals and second control signals are output to the USB2.0 SWITCH module and the USB3.0 SWITCH module in the USB SWITCH module. The relevant principle is as follows: when the toggle switch K1 is toggled to make pins 2 and 3 conductive, pin 2 is connected to 3.3V through resistor R1, at this time, pin 1 of transistor Q1 is high level, the transistor is conductive, pin 3 of transistor Q1 is low level, and the control signal is low level; when the toggle switch K1 is toggled to make pins 1 and 2 conductive, pin 2 is grounded and low level, at this time, pin 1 of transistor Q1 is also low level, the transistor is turned off, pin 3 of transistor Q1 is high level, and the control signal is high level.

[0049] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present invention.

Claims

1. A USB channel detection device, characterized in that: include: A USB input module configured to connect to the device under test and transmit the signal source to the USB SWITCH module; A USB SWITCH module, which is configured to control the on / off of USB2.0 DP / DM signal channels and USB3.0 RX / TX signal channels; A selection module configured to control the selection of a USB2.0 DP / DM signal channel or a USB3.0 RX / TX signal channel in a USB SWITCH module; A USB output module, which is configured to connect to the device under test, receive the signal from the USB SWITCH module and transmit it back to the device under test; The power module is configured to provide operating voltage to the USB input module, the USB SWITCH module, the selection module and the signal source.

2. A USB channel detection device according to claim 1, characterized in that: The USB SWITCH module includes a USB2.0 SWITCH module and a USB3.0 SWITCH module. The USB2.0 SWITCH module controls the on / off of the USB2.0 DP / DM signal channel, and the USB3.0 SWITCH module controls the on / off of the USB3.0 RX / TX signal channel.

3. A USB channel detection device according to claim 1 or 2, characterized in that: The selection module includes a first selection module and a second selection module; The first selection module controls the on / off of the USB2.0 DP / DM signal channel in the USB SWITCH module by transmitting a first control signal to the USB SWITCH module; The second selection module controls the on / off of the USB3.0 RX / TX signal channel in the USB SWITCH module by transmitting a second control signal to the USB SWITCH module.

4. A USB channel detection device according to claim 1, characterized in that: The selection module comprises: A control switch K1, wherein pin 3 is connected to a power source via a resistor R1, pin 2 is connected to one end of a capacitor C1 and a first end of a resistor R2, pin 1 is connected to the other end of the capacitor C1 and to ground, and pins 4 and 5 are grounded; The second end of the resistor R2 is connected to the base of the transistor Q1; The collector of transistor Q1 is connected to the power supply through resistor R3; The collector of the transistor Q1 serves as an output terminal of the first control signal or the second control signal; The emitter of transistor Q1 is grounded.

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