USB signal splitting test device and system

Abstract

The utility model discloses a USB signal splitting test device and system, the USB signal splitting test device comprises a male head, a connector, a PCB and a female head, the PCB comprises a first line and a second line, the female head comprises a first female head and a second female head, the male head receives USB signals, the connector splits the USB signals into USB3.0 signals and USB2.0 signals, the first line transmits the USB3.0 signals, and the second line transmits the USB2.0 signals. The second line is used for transmitting a USB2.0 signal; the first female head outputs a USB3.0 signal, and the second female head outputs a USB2.0 signal. According to the technical scheme, a traditional wire rod is replaced by the PCB, efficient transmission of USB3.0 signals is achieved, production cost is reduced, reliability and stability of signal transmission are improved, in addition, due to the double-female-head design, output interfaces are flexible, convenient and practical, and independent and accurate signal testing and analysis based on testing equipment are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal test technical field especially relates to a USB signal splitting test device and system. BACKGROUND

[0002] In the USB3.0 interface test process, the test environment is higher to signal quality and the reliability requirement of connection. However, the traditional test method mostly depends on USB3.0 separating line, and this method has multiple defects, mainly shows that wire material is easy to break, signal quality is unstable and equipment identification fails etc. USB3.0 separating line is easy to produce bad contact in long-term use, influences test stability, leads to the increase of misjudgment rate. In addition, in the test process, test personnel need to carry out manual plug-pull operation frequently to ensure that test contact is good, which not only increases workload, but also significantly reduces test efficiency.

[0003] The existing USB3.0 separating line scheme is difficult to effectively meet the efficient and stable test demand, and is specifically shown in the following several aspects:

[0004] 1, signal quality difference is big: because the manufacturing and design of separating line material are inconsistent, leading to its signal quality is difficult to guarantee. The high-speed differential signal of USB3.0 is strictly required to the characteristic impedance of wire material, and signal attenuation, noise interference etc. are common in traditional separating line, and then influence the accuracy of test result.

[0005] 2, easy to break: after USB3.0 separating line is plugged in and out for many times, internal structure and contact point are easy to wear and even damage, influence test connection stability. Wire material easy to break problem not only increases maintenance and replacement cost, but also influences the continuity and efficiency of test work.

[0006] 3, high misjudgment rate: because of unstable signal transmission, equipment identification fails or data transmission error, often makes test result appear deviation, leads to high misjudgment rate. Test personnel need to spend more time to carry out repeated test to ensure the accuracy of result, which further reduces the overall test efficiency. INVENTION CONTENTS

[0007] The utility model embodiment provides a kind of USB signal splitting test device and system to solve above-mentioned technical problem.

[0008] The utility model embodiment first aspect provides a kind of USB signal splitting test device, comprising:

[0009] male, its interface is connected with the mainboard of test machine, to receive USB signal;

[0010] a connector connected to the male head to split the USB signal into a USB3.0 signal and a USB2.0 signal;

[0011] a PCB board including a first line and a second line, the first line and the second line being connected to the connector respectively, the first line transmitting the USB3.0 signal, and the second line transmitting the USB2.0 signal;

[0012] a female head including a first female head and a second female head arranged adjacently, an interface of the first female head being connected to the first line to output the USB3.0 signal, and an interface of the second female head being connected to the second line to output the USB2.0 signal.

[0013] Optionally, the interface of the male head includes a first group of data contacts, a first group of SUPERSPEED contacts, and a first bus contact, the first group of data contacts and the first group of SUPERSPEED contacts being connected to a mainboard of the testing machine respectively, and the first bus contact being connected to a bus contact of the connector.

[0014] Optionally, the connector includes a second bus contact, a third bus contact, a second group of data contacts, and a second group of SUPERSPEED contacts, the second bus contact and the third bus contact being connected to the first bus contact respectively, the second group of SUPERSPEED contacts being connected to the first line, and the second group of data contacts being connected to the second line.

[0015] Optionally, the PCB board is a double-sided PCB board, two sides of the double-sided PCB board including a first side and a second side, the first line being located on the first side, and the second line being located on the second side.

[0016] Optionally, the USB signal splitting testing device further includes a first filter module and a second filter module, one end of the first filter module being connected to a ground end of the interface of the male head, the other end of the first filter module being grounded, one end of the second filter module being connected to a ground end of the connector, and the other end of the second filter module being grounded.

[0017] Optionally, the first filter module includes a first resistor and a first capacitor, one end of the first resistor and one end of the first capacitor being connected together to form one end of the first filter module, and the other end of the first resistor and the other end of the first capacitor being connected together to form the other end of the first filter module.

[0018] Optionally, the second filter module comprises a second resistor and a second capacitor, one end of the second resistor and one end of the second capacitor are connected to form one end of the second filter module, and the other end of the second resistor and the other end of the second capacitor are connected to form the other end of the second filter module.

[0019] Optionally, the female head further comprises a shell and a partition plate, the partition plate divides the shell into a first cavity and a second cavity, the first female head is located in the first cavity, and the second female head is located in the second cavity.

[0020] The USB signal splitting test system provided in the second aspect of the embodiment of the utility model comprises the USB signal splitting test device, a test machine, a first USB flash disk and a second USB flash disk.

[0021] The technical effect of the embodiment of the utility model is that: the USB signal splitting test device effectively separates and independently transmits USB3.0 and USB2.0 signals through the design of the connector and the PCB board, avoids signal interference, replaces the traditional wire with the PCB board, realizes efficient transmission of the USB3.0 signal, not only utilizes the redundant area of the special-shaped plate in the existing project, reduces the production cost, but also improves the reliability and stability of signal transmission, benefits from the high precision and consistency control (90Ω±5%) of the characteristic impedance of the differential signal wiring of the PCB board, effectively guarantees the signal integrity, reduces signal reflection and crosstalk, and avoids the occurrence of problems such as unstable USB. At the same time, the structure of the PCB board is more durable than the traditional separated wire, and the risk of equipment damage is reduced. In the testing process, the design significantly improves the testing efficiency and accuracy, reduces the damage of the USB flash disk, and significantly reduces the testing cost. The design not only has good economy, but also enhances the signal quality and equipment reliability. In addition, the double female head design makes the output interface flexible, convenient and practical, and enables independent and accurate signal testing and analysis based on the test equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the description of the embodiment of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor intensity.

[0023] Figure 1 is the first structure schematic view of the USB signal splitting test device provided in the embodiment one of the utility model;

[0024] Figure 2is the circuit diagram of the interface of the male head in the USB signal splitting test device provided by the embodiment one of the utility model;

[0025] Figure 3 is the circuit diagram of the connector in the USB signal splitting test device provided by the embodiment one of the utility model;

[0026] Figure 4 is the structure diagram of the first surface of the PCB board in the USB signal splitting test device provided by the embodiment one of the utility model;

[0027] Figure 5 is the structure diagram of the second surface of the PCB board in the USB signal splitting test device provided by the embodiment one of the utility model;

[0028] Figure 6 is the second structure schematic view of the USB signal splitting test device provided by the embodiment one of the utility model;

[0029] Figure 7 is the circuit diagram of the first filter module of the USB signal splitting test device provided by the embodiment one of the utility model;

[0030] Figure 8 is the circuit diagram of the second filter module of the USB signal splitting test device provided by the embodiment one of the utility model;

[0031] Figure 9 is the front view of the USB signal splitting test device provided by the embodiment one of the utility model;

[0032] Figure 10 is the left view of the USB signal splitting test device provided by the embodiment one of the utility model;

[0033] Figure 11 is the structure schematic view of the USB signal splitting test system provided by the embodiment two of the utility model;

[0034] In the drawing: 101, male head;102, connector;103, PCB board;104, female head;141, first female head;142, second female head;143, shell;144, isolation plate;201, test machine;202, first U disk;203, second U disk. DETAILED DESCRIPTION

[0035] Clearly, the described embodiments are only some, but not all, embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0036] It is to be understood that the present application can be carried out by different forms without departing from the character or spirit of the application. Accordingly, although specific embodiments have been indicated above, it will be apparent what modifications and changes can be made by those skilled in the art without departing from the spirit of the application. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document. Like reference numerals in different drawings designate the same, similar, or corresponding parts.

[0037] It will be understood that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element or layer, there are no intervening elements or layers present. It will also be understood that, when an element is referred to as being "connected to" or "coupled to" another element or layer, it can be directly connected to the other element or layer or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0039] For a thorough understanding of the present application, reference should be made to the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0040] Embodiment One

[0041] The embodiment one provides a USB signal splitting testing device, as shown in the figure, comprising: Figure 1

[0042] a male head 101, which is connected to the mainboard of the testing machine to receive USB signals;

[0043] a connector 102, which is connected to the male head 101 to split the USB signals into USB3.0 signals and USB2.0 signals;

[0044] a PCB board 103, which comprises a first line and a second line, the first line and the second line are connected to the connector 102 respectively, the first line transmits USB3.0 signals, and the second line transmits USB2.0 signals;

[0045] a female head 104, which comprises a first female head 141 and a second female head 142 arranged adjacently, the interface of the first female head 141 is connected to the first line to output USB3.0 signals, and the interface of the second female head 142 is connected to the second line to output USB2.0 signals.

[0046] The interface of the male head 101 is connected to the mainboard of the testing machine to receive USB signals sent by the mainboard. When the testing machine mainboard sends USB signals, the signals are transmitted into the device through the male head 101. The connector 102 connects the male head 101 to divide the received USB signals into USB3.0 signals and USB2.0 signals. The interface of the male head 101 usually contains USB2.0 signals (D+ and D-) and additional SuperSpeed signal pairs (TX+ / TX- and RX+ / RX-), and the connector 102 can identify and separate the two types of signals to allocate different lines for USB3.0 signals and USB2.0 signals respectively. The PCB board 103 contains wiring structures and connection contacts, and different wiring structures are set up to transmit USB3.0 and USB2.0 signals respectively. After the connector 102 splits the signals, the USB3.0 signals are transmitted through the first line of the PCB board 103, while the USB2.0 signals are transmitted through the second line. The first female head 141 is used to output USB3.0 signals, and the second female head 142 is used to output USB2.0 signals. The USB3.0 signals transmitted through the PCB board 103 are connected to the interface of the first female head 141 to output independent USB3.0 signals. Similarly, the USB2.0 signals are transmitted through the PCB board 103 to the interface of the second female head 142 to output USB2.0 signals. Therefore, the testing instrument can independently analyze the endpoint signals.

[0047] ​The technical effect of the technical solution provided by the embodiment one is that the USB signal splitting test device effectively separates and independently transmits USB3.0 and USB2.0 signals through the design of the connector and the PCB board, avoids signal interference, realizes efficient transmission of the USB3.0 signal by replacing the traditional wire with the PCB board, not only utilizes the redundant area of the special-shaped board in the existing project to reduce the production cost, but also improves the reliability and stability of signal transmission, benefits from the high precision and consistency control (90Ω±5%) of the characteristic impedance of the differential signal trace of the PCB board, effectively guarantees the signal integrity, reduces signal reflection and crosstalk, and avoids the occurrence of USB instability and other problems. At the same time, the structure of the PCB board is more durable than the traditional separation wire, reducing the risk of equipment damage. During the test process, the design significantly improves the test efficiency and accuracy, reduces the damage of the U disk, and significantly reduces the test cost. This design not only has good economy, but also enhances the signal quality and equipment reliability, and is an ideal replacement solution for the USB3.0 separation wire. In addition, the double female head design makes the output interface flexible, convenient and practical, and based on the test equipment, independent and accurate signal testing and analysis, and this structure is particularly suitable for test scenarios that need to detect and analyze different USB protocol signals at the same time.

[0048] As an implementation, the interface of the male head includes a first group of data contacts, a first group of SUPERSPEED contacts, and a first bus contact, the first group of data contacts and the first group of SUPERSPEED contacts are connected to the mainboard of the test machine respectively, and the first bus contact is connected to the bus contact of the connector 102.

[0049] Among them, the first group of data contacts is mainly used for transmitting basic data, such as USB2.0 standard signals. This group of data contacts is connected to the mainboard of the test machine, realizing the basic low-speed to high-speed data transmission function. The first group of SUPERSPEED contacts is used for high-speed data transmission, usually supporting USB3.0 or higher standards, realizing faster data exchange. This group of contacts is automatically enabled when a high-speed device is inserted, and establishes a high-speed connection with the corresponding interface of the mainboard, with higher transmission bandwidth than ordinary data contacts. The first bus contact is responsible for transmitting data signals of different protocols (such as USB2.0 and USB3.0), and can automatically adapt the output signal mode according to the needs of the connected device, thereby realizing efficient data transmission. In addition to transmitting data, the first bus contact can also provide a channel for power transmission to power the connected device.

[0050] As shown in Figure 2 As an example, the first contact bus is pin 1 (VBUS), the first group of data contacts includes pin 2 (D-) and pin 3 (D+), and the first group of SUPERSPEED contacts includes pin 5 (SSTX-), pin 6 (SSTX+), pin 8 (SSRX-), and pin 9 (SSRX+).

[0051] The technical effect of the embodiment is that the interface of the male head realizes the functions of basic data and high-speed data transmission through the good work of the above interfaces, and provides interface support and efficient communication transmission for the test equipment.

[0052] As an embodiment, the connector 102 includes a second bus contact, a third bus contact, a second set of data contacts, and a second set of SUPERSPEED contacts, the second bus contact and the third bus contact are connected to the first bus contact respectively, the second set of SUPERSPEED contacts is connected to the first line, and the second set of data contacts is connected to the second line.

[0053] Among them, the second bus contact and the third bus contact are used to connect the first bus contact to realize the transmission of data and power. The second set of data contacts is responsible for the transmission of basic data, such as USB2.0 signals, for lower-speed data communication requirements. The second set of SUPERSPEED contacts is mainly used for high-speed data transmission, supports USB3.0 and higher standards, and is suitable for devices that require fast data transmission.

[0054] As shown in Figure 3 As an example, the second contact bus is pin 1 (VBUS1), the third contact bus is pin 10 (VBUS2), the second set of data contacts includes pin 11 (D2-) and pin 12 (D2+), and the second set of SUPERSPEED contacts includes pin 5 (SSTX1-), pin 6 (SSTX1+), pin 8 (SSRX1-), and pin 9 (SSRX1+).

[0055] The technical effect of the embodiment is that the connector realizes basic and high-speed data transmission through the cooperation of the second bus contact, the third bus contact, the second set of data contacts, and the SUPERSPEED contact. This design makes the connector compatible and efficient, and can adapt to various devices and data transmission requirements.

[0056] As an embodiment, as shown in Figure 4 and Figure 5 The PCB board 103 is a double-sided PCB board, and the double-sided PCB board includes a first side and a second side, the first line is located on the first side, and the second line is located on the second side.

[0057] The first circuit is located on the first side of the double-sided PCB board and is mainly used for high-speed signal transmission, such as a USB 3.0 or a higher standard SUPERSPEED signal channel, to ensure high-bandwidth data transmission. The first circuit is connected to the second group of SUPERSPEED contacts, and when a high-speed device is connected, the first circuit immediately establishes a high-speed signal transmission path to transmit data at high speed to the first female head 141. The second circuit is located on the second side of the double-sided PCB board and is mainly used for transmitting basic data (such as a USB 2.0 standard signal) and is suitable for low-speed or conventional signal transmission. When the device is connected to the interface, the second circuit establishes a basic data transmission path to transmit to the second female head 142. The overall design advantage of the double-sided PCB board is that high-speed signals and low-speed signals are arranged on different PCB board surfaces to ensure that the signals do not interfere with each other, reduce noise and signal reflection, and improve signal integrity.

[0058] The contacts on both sides of the double-sided PCB board are usually made of metal materials and have good electrical conductivity. The contacts can be pins, pads, or connector terminals soldered on each side as interfaces for signal channels. Each contact corresponds to one or more signal lines and is connected to other components or modules through circuit wiring on each side to form a complete signal transmission path. When a signal is input from a device or module to one side of the double-sided PCB board, the signal first enters the circuit through the contact soldered to the PCB board. The signal is guided into the copper circuit (wiring) on the PCB board along the contact and transmitted to the target position according to the path designed by the circuit.

[0059] The technical effect of the embodiment is that the design of the double-sided PCB board allows high-speed and low-speed signal transmission and power transmission to operate efficiently through the division of labor between the first and second sides. The first circuit ensures the reliability and stability of high-speed data, while the second circuit provides stable transmission of low-speed signals and power. The overall design has advantages such as signal integrity, space utilization, etc., meets the needs of complex devices and multiple signal transmission, and improves the performance and durability of the circuit board.

[0060] As an embodiment, as shown in Figure 6 The USB signal splitting test device further includes a first filter module 105 and a second filter module 106. One end of the first filter module 105 is connected to the ground end of the interface of the male head 101, and the other end of the first filter module 105 is grounded. One end of the second filter module 106 is connected to the ground end of the connector 102, and the other end of the second filter module 106 is grounded.

[0061] As shown in Figure 7As shown, the first filter module 105 includes a first resistor R1 and a first capacitor C1. One end of the first resistor 105 and one end of the first capacitor C1 are connected together to form one end of the first filter module 105. The other end of the first resistor R1 and the other end of the first capacitor C1 are connected together to form the other end of the first filter module 105.

[0062] like Figure 8 As shown, the second filter module 106 includes a second resistor R2 and a second capacitor C2. One end of the second resistor R2 and one end of the second capacitor C2 are connected together to form one end of the second filter module 106. The other end of the second resistor R2 and the other end of the second capacitor C2 are connected together to form the other end of the second filter module 105.

[0063] The first filtering module 105 and the second filtering module 106 are mainly used to filter USB 3.0 signals to reduce high-frequency noise and signal interference, ensuring signal purity and integrity. When the signal passes through the second filtering module 106, the second capacitor C2 and the second resistor R2 combine to form a low-pass filter circuit, effectively removing high-frequency interference and allowing only signals within the required frequency range to pass. The second resistor R2 in the filtering circuit is mainly used to form an RC low-pass filter with the second capacitor C2 to attenuate high-frequency signals above a specific frequency. When the signal passes through the filtering module, the capacitor short-circuits the high-frequency components, directly guiding high-frequency noise to ground, thereby preventing it from affecting the normal transmission of USB 3.0 signals.

[0064] The technical advantage of this implementation is that the filtering module, through the combination of resistors and capacitors, forms a low-pass filter circuit, which can effectively filter out high-frequency noise and interference components in the USB 3.0 signal. The resistors limit the current of high-frequency noise, while the capacitors bypass the high-frequency noise to ground, thereby ensuring signal integrity and transmission stability. This design enhances the anti-interference capability of USB 3.0 signal transmission, improves data transmission quality, and ensures signal purity and reliability in high-speed transmission environments.

[0065] As one implementation method, such as Figure 9 and Figure 10 As shown, the female head 104 also includes a housing 143 and a partition plate 144. The partition plate 144 divides the housing into a first cavity and a second cavity. The first female head 141 is located in the first cavity, and the second female head 142 is located in the second cavity.

[0066] The shell 143 provides overall protection and structural support, encapsulating all internal components to prevent external environmental influences while enhancing mechanical strength. The shell 143 covers the entire female head device, forming a solid external protective layer that prevents dust, moisture, and physical impact from damaging the internal circuitry and contact points. The isolation plate separates the shell into two independent cavities, physically isolating the first female head 141 and the second female head 142. The isolation plate divides the shell interior into a first cavity and a second cavity, with the two female heads placed separately in their respective cavities, ensuring their independence and avoiding electrical interference. The first cavity is used to accommodate the first female head 141, which connects with external devices, providing an input or output channel for data. When an external device is inserted into the first female head 141, the first female head 141 connects the data transmission channel, providing stable signal transmission through the structure within the first cavity. The second cavity is used to accommodate the second female head 142, which independently connects with external devices. The second female head 142 also provides an interface for data transmission. When a device is inserted into the second female head 142, the second female head 142 operates independently under the protection of the second cavity, providing the required signal channel without interfering with the operation of the first female head 141.

[0067] The technical effect of this embodiment is that through the design of the shell, isolation plate, first cavity, and second cavity, the female head device achieves independent and reliable operation of each interface. The shell provides strong external protection, and the isolation plate ensures physical separation of the internal space, reducing the influence of electromagnetic interference. The first cavity and the second cavity accommodate the first female head and the second female head, respectively, ensuring that they operate in their respective independent spaces and avoid mutual interference, thereby improving the safety, signal stability, and anti-interference ability of the device.

[0068] Embodiment Two

[0069] This embodiment two provides a USB signal splitting test system, as shown in Figure 11 The USB signal splitting test system includes the USB signal splitting test device 10 provided in embodiment one and the test machine 201.

[0070] The USB signal splitting test system further includes a first U disk 202 and a second U disk 203. The first U disk 202 is connected to the first female head 141, and the second U disk 203 is connected to the second female head 142.

[0071] The USB signal splitting test device 10 is used for splitting the USB signal to support simultaneous connection of devices. After receiving the USB signal output by the tester 201, the device splits the signal and sends it to the first female head 141 and the second female head 142 respectively, ensuring that each female head receives an independent signal channel and avoiding signal interference. The tester 201 is used to generate USB signals and provides a unified test platform for testing and verifying U disks. The tester 201 generates and outputs USB signals, which are transmitted to each connected U disk through the USB signal splitting test device 10, realizing data reading, transmission, and stability testing, etc. The first U disk 202 is used to test the USB signal transmission effect of this channel, including transmission rate, stability, and reliability of read-write operation data. The first U disk 202 receives signals from the tester 201 through the first female head 141 and performs data reading and writing, etc. The tester 201 monitors and analyzes the operation results. The second U disk 203 is used to test the transmission effect of the USB3.0 signal on the second channel. The second U disk 203 receives the USB2.0 signal through the second female head 142 and also performs data transmission, reading and writing, and stability testing. The tester 201 records the operation conditions.

[0072] The technical effect of the embodiment is that the USB signal splitting test system realizes independent testing of multiple channels through the cooperation of the tester, the USB signal splitting test device, and multiple U disks. The tester provides a unified signal source, the USB signal splitting device effectively separates the signals to avoid interference between channels, and each U disk verifies the signal quality and transmission stability of its respective channel. The system improves testing efficiency, ensures the stability and reliability of multi-channel signal transmission, is suitable for large-scale USB device testing scenarios, reduces testing costs, and improves accuracy.

[0073] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. These modifications or substitutions do not change the essence of the corresponding technical solutions, and are within the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A USB signal splitting test device, characterized by, The USB signal splitting test device comprises: a male head connected to a mainboard of a test machine to receive a USB signal; a connector connected to the male head to split the USB signal into a USB3.0 signal and a USB2.0 signal; a PCB board comprising a first line and a second line, the first line and the second line being connected to the connector respectively, the first line transmitting the USB3.0 signal, and the second line transmitting the USB2.0 signal; a female head comprising a first female head and a second female head arranged adjacently, the first female head being connected to the first line to output the USB3.0 signal, and the second female head being connected to the second line to output the USB2.0 signal.

2. The USB signal splitting test device of claim 1, wherein, The interface of the male head comprises a first group of data contacts, a first group of SUPERSPEED contacts, and a first bus contact, the first group of data contacts and the first group of SUPERSPEED contacts being connected to the mainboard of the test machine respectively, and the first bus contact being connected to a bus contact of the connector.

3. The USB signal splitting test device of claim 2, wherein, The connector comprises a second bus contact, a third bus contact, a second group of data contacts, and a second group of SUPERSPEED contacts, the second bus contact and the third bus contact being connected to the first bus contact respectively, the second group of SUPERSPEED contacts being connected to the first line, and the second group of data contacts being connected to the second line.

4. The USB signal splitting test device of claim 1, wherein, The PCB board is a double-sided PCB board, two sides of the double-sided PCB board comprising a first side and a second side, the first line being located on the first side, and the second line being located on the second side.

5. The USB signal splitting test device of claim 1, wherein, The USB signal splitting test device further comprises a first filter module and a second filter module, one end of the first filter module being connected to a ground end of the interface of the male head, the other end of the first filter module being grounded, one end of the second filter module being connected to a ground end of the connector, and the other end of the second filter module being grounded.

6. The USB signal splitting test device of claim 5, wherein, The first filter module comprises a first resistor and a first capacitor, one end of the first resistor and one end of the first capacitor being connected together to form one end of the first filter module, and the other end of the first resistor and the other end of the first capacitor being connected together to form the other end of the first filter module.

7. The USB signal splitting test device of claim 5, wherein, The second filter module comprises a second resistor and a second capacitor, one end of the second resistor and one end of the second capacitor being connected together to form one end of the second filter module, and the other end of the second resistor and the other end of the second capacitor being connected together to form the other end of the second filter module.

8. The USB signal splitting test device of claim 1, wherein, The female head further comprises a shell and a separation plate, the separation plate dividing the shell into a first cavity and a second cavity, the first female head being located in the first cavity, and the second female head being located in the second cavity.

9. A USB signal splitting test system, characterized in that, The USB signal splitting test device and the test machine according to any one of claims 1 to 8. The USB signal splitting test system further comprises a first U disk and a second U disk, the first U disk being connected to the first female head, and the second U disk being connected to the second female head.

10. The USB signal splitting test system of claim 9, wherein, ​

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