Vehicle communication detection device, vehicle communication detection system and vehicle

Abstract

The utility model relates to a vehicle communication detection device, a vehicle communication detection system and a vehicle. The vehicle communication detection device comprises a detection unit and a signal conversion unit, the signal conversion unit is connected between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device; the signal conversion unit is also electrically connected with the detection unit; the signal conversion unit is used for transmitting a USXGMII signal between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device; the signal conversion unit is also used for converting a USXGMII signal transmitted between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device into an Ethernet signal, sending the Ethernet signal to the detection unit, and converting the Ethernet signal fed back by the detection unit into the USXGMII signal. According to the technical scheme, communication detection between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device is achieved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular to a vehicle communication detection device, a vehicle communication detection system and a vehicle. BACKGROUND

[0002] With the rapid development and iterative update of electronic products, most of the new vehicle models currently integrate multiple vehicle controllers.

[0003] In the related art, for the central centralized electronic and electrical architecture, the controller on the cockpit board and the controller of the vehicle gateway do not have a commonly used Ethernet interface, but realize communication through a USXGMII interface, so they cannot directly communicate with a computer and other detection devices, and the computer and other detection devices cannot realize simulation of Ethernet messages and capture of Ethernet messages to detect communication between the controllers. UTILITARIAN CONTENT

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a vehicle communication detection device, a vehicle communication detection system and a vehicle, which realizes communication detection between a first to-be-detected vehicle control device and a second to-be-detected vehicle control device by converting a USXGMII signal into an Ethernet signal.

[0005] In a first aspect, the present disclosure provides a vehicle communication detection device, comprising:

[0006] a detection unit and a signal conversion unit;

[0007] The signal conversion unit is connected between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device; and the signal conversion unit is also electrically connected with the detection unit;

[0008] The signal conversion unit is also used to convert a USXGMII signal transmitted between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device into an Ethernet signal, send the Ethernet signal to the detection unit, and convert the Ethernet signal fed back by the detection unit into the USXGMII signal.

[0009] Optionally, the signal conversion unit comprises a first signal conversion unit and a second signal conversion unit, the first to-be-detected vehicle control device is electrically connected with the detection unit through the first signal conversion unit; and the detection unit is electrically connected with the second to-be-detected vehicle control device through the second signal conversion unit;

[0010] The first signal conversion unit is configured to convert the first USXGMII signal sent by the first vehicle control device to be detected into a first Ethernet signal, and send the first Ethernet signal to the detection unit; the detection unit sends a second Ethernet signal to the second signal conversion unit, and the second signal conversion unit is configured to convert the second Ethernet signal into a second USXGMII signal, and send the second USXGMII signal to the second vehicle control device to be detected.

[0011] Alternatively, the second signal conversion unit is configured to convert the second USXGMII signal sent by the second vehicle control device to be detected into a second Ethernet signal, and send the second Ethernet signal to the detection unit; the detection unit sends a first Ethernet signal to the first signal conversion unit, and the first signal conversion unit is configured to convert the first Ethernet signal into a first USXGMII signal, and send the first USXGMII signal to the first vehicle control device to be detected.

[0012] Optionally, the signal conversion unit comprises a transmission rate selection end.

[0013] The transmission rate selection end is configured to receive a trigger level signal, so that the signal conversion unit transmits signals at a data transmission rate corresponding to the trigger level signal.

[0014] Optionally, the signal conversion unit further comprises a general input and output unit.

[0015] The general input and output unit is configured to transmit CAN signals and / or IO signals between the first vehicle control device to be detected and the second vehicle control device to be detected.

[0016] Optionally, the signal conversion unit comprises a first connector interface and a second connector interface; the first vehicle control device to be detected is electrically connected to the signal conversion unit through the first connector interface; and the second vehicle control device to be detected is electrically connected to the signal conversion unit through the second connector interface.

[0017] Optionally, the signal conversion unit is plugged on a circuit board of the vehicle communication detection device.

[0018] Optionally, the vehicle communication detection device further comprises a voltage conversion unit, and the voltage conversion unit comprises a rectifier chip, a first feedback resistor and a second feedback resistor.

[0019] The input end of the rectifier chip is connected to a power supply voltage, the signal conversion unit and the first end of the first feedback resistor are electrically connected to the output end of the rectifier chip, the second end of the first feedback resistor and the first end of the second feedback resistor are electrically connected to the feedback end of the rectifier chip, and the second end of the second feedback resistor is grounded.

[0020] Optionally, the vehicle communication detection device further comprises a voltage monitoring unit, the voltage monitoring unit comprising a monitoring chip, a switch module and a prompt module;

[0021] The input end of the monitoring chip is electrically connected to the output end of the voltage conversion unit, the output end of the monitoring unit is electrically connected to the first end of the switch module, the second end of the switch module is electrically connected to the first end of the prompt module, the third end of the switch module is grounded, and the second end of the prompt module is electrically connected to a power supply end.

[0022] In a second aspect, the present disclosure further provides a vehicle communication detection system comprising the vehicle communication detection device according to the first aspect.

[0023] In a third aspect, the present disclosure further provides a vehicle comprising the vehicle communication detection system according to the second aspect.

[0024] The present disclosure provides a vehicle communication detection device, a vehicle communication detection system and a vehicle. The vehicle communication detection device comprises a detection unit and a signal conversion unit. The signal conversion unit is connected between a first to-be-detected vehicle control device and a second to-be-detected vehicle control device. The signal conversion unit is also electrically connected to the detection unit. The signal conversion unit is used to transmit USXGMII signals between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device. The signal conversion unit is also used to convert the USXGMII signals transmitted between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device into Ethernet signals, send the detection unit, and convert the Ethernet signals fed back by the detection unit into USXGMII signals. Thus, the signal conversion unit is used to realize the conversion between USXGMII signals and Ethernet signals, so that the detection unit can detect the communication between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device by simulating Ethernet messages and capturing Ethernet messages, and the signal conversion unit is also used to convert the Ethernet signals fed back by the detection unit into USXGMII signals and send them to the first to-be-detected vehicle control device, so as to realize the communication between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0027] Figure 1 A structural schematic diagram of a vehicle communication detection device provided by an embodiment of the present disclosure is shown in the figure.

[0028] Figure 2 A structural schematic diagram of another vehicle communication detection device provided by an embodiment of the present disclosure is shown in the figure.

[0029] Figure 3 A structural schematic diagram of a signal conversion unit provided by an embodiment of the present disclosure is shown in the figure.

[0030] Figure 4 A structural schematic diagram of an RS1 pin provided by an embodiment of the present disclosure is shown in the figure.

[0031] Figure 5 A structural schematic diagram of an RS0 pin provided by an embodiment of the present disclosure is shown in the figure.

[0032] Figure 6 A structural schematic diagram of another vehicle communication detection device provided by an embodiment of the present disclosure is shown in the figure.

[0033] Figure 7 A structural schematic diagram of a general input and output unit provided by an embodiment of the present disclosure is shown in the figure.

[0034] Figure 8 A structural schematic diagram of a first connector interface provided by an embodiment of the present disclosure is shown in the figure.

[0035] Figure 9 A structural schematic diagram of a voltage conversion unit provided by an embodiment of the present disclosure is shown in the figure.

[0036] Figure 10 A structural schematic diagram of a power input interface provided by an embodiment of the present disclosure is shown in the figure.

[0037] Figure 11 A structural schematic diagram of a voltage monitoring unit provided by an embodiment of the present disclosure is shown in the figure.

[0038] Wherein, 10, vehicle communication detection device; 20, first to be detected vehicle control device; 30, second to be detected vehicle control device; 11, signal conversion unit; 12, detection unit; 13, general input and output unit; 14, first connector interface; 15, second connector interface; 16, voltage conversion unit; 17, voltage monitoring unit; 111, first signal conversion unit; 112, second signal conversion unit; U1, rectifier chip; U2, monitoring chip; Q1, switch module; D1, prompt module; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R11, first feedback resistor; R12, second feedback resistor; L1, output inductance. DETAILED DESCRIPTION

[0039] In order to enable more clear understanding of the above-mentioned purposes, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure can also be implemented in other ways different from those described herein; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, not all the embodiments.

[0041] In the related art, for the central centralized electronic and electrical architecture, such as the controller on the cockpit board and the controller of the vehicle gateway, there is no common Ethernet interface, but the communication is realized through the USXGMII interface, so it cannot directly communicate with the computer and other detection devices, and the computer and other detection devices cannot realize the simulation of Ethernet message and the grabbing of Ethernet message to detect the communication between the controllers.

[0042] Figure 1 The structure schematic diagram of a vehicle communication detection device provided by the embodiment of the present disclosure is shown in Figure 1 As shown in the figure, the vehicle communication detection device 10 comprises a detection unit 12 and a signal conversion unit 11; the signal conversion unit 11 is connected between the first to be detected vehicle control device 20 and the second to be detected vehicle control device 30; the signal conversion unit 11 is also electrically connected with the detection unit 12; the signal conversion unit 11 is used to convert the USXGMII signal transmitted between the first to be detected vehicle control device 20 and the second to be detected vehicle control device 30 into an Ethernet signal, and send the detection unit 12, and convert the Ethernet signal fed back by the detection unit 12 into a USXGMII signal.

[0043] The first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 may be, for example, an ECU (Electronic Control Unit). Since the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 both communicate by transmitting USXGMII signals through a USXGMII interface, and the detection unit 12 is a detection device such as a computer that needs to access an Ethernet signal, the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 is detected by simulating and capturing Ethernet messages. Therefore, the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 cannot be detected in the related art.

[0044] To solve the above problems, as shown in Figure 1 In some embodiments, the signal conversion unit 11 can convert the USXGMII signal sent by the first to-be-detected vehicle control device 20 into an Ethernet signal, for example, a Tx signal, and send it to the detection unit 12, so that the detection unit 12 detects the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 by simulating and capturing Ethernet messages. The signal conversion unit 11 is also used to convert the Ethernet signal fed back by the detection unit 12 into a USXGMII signal and send it to the second to-be-detected vehicle control device 30, so as to realize the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30.

[0045] In other embodiments, the signal conversion unit 11 can also convert the USXGMII signal sent by the second to-be-detected vehicle control device 30 into an Ethernet signal and send it to the detection unit 12, so that the detection unit 12 detects the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 by simulating and capturing Ethernet messages. The signal conversion unit 11 also converts the Ethernet signal fed back by the detection unit 12 into a USXGMII signal and sends it to the first to-be-detected vehicle control device 20, so as to realize the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30.

[0046] The signal conversion unit 11 is used to realize the conversion between the USXGMII signal and the Ethernet signal, so that the detection unit 12 can detect the communication between the first vehicle control device 20 and the second vehicle control device 30 by simulating the Ethernet message and capturing the Ethernet message, and the signal conversion unit 11 also converts the Ethernet signal fed back by the detection unit 12 into the USXGMII signal and sends it to the first vehicle control device 20, so as to realize the communication between the first vehicle control device 20 and the second vehicle control device 30.

[0047] Figure 2 Another structural schematic diagram of the vehicle communication detection device 10 provided by the embodiment of the present disclosure is shown. Optionally, as shown in Figure 2 The signal conversion unit 11 includes a first signal conversion unit 111 and a second signal conversion unit 112, the first vehicle control device 20 is electrically connected with the detection unit 12 through the first signal conversion unit 111; the detection unit 12 is electrically connected with the second vehicle control device 30 through the second signal conversion unit 112; the first signal conversion unit 111 is used to convert the first USXGMII signal sent by the first vehicle control device 20 into the first Ethernet signal and send the first Ethernet signal to the detection unit 12; the detection unit 12 is used to send the second Ethernet signal to the second signal conversion unit 112, the second signal conversion unit 112 is used to convert the second Ethernet signal into the second USXGMII signal and send the second Ethernet signal to the second vehicle control device 30; or, the second signal conversion unit 112 is used to convert the second USXGMII signal sent by the second vehicle control device 30 into the second Ethernet signal and send the second Ethernet signal to the detection unit 12, the detection unit 12 is used to send the first Ethernet signal to the first signal conversion unit 111, and the first signal conversion unit 111 is used to convert the first Ethernet signal into the first USXGMII signal and send the first Ethernet signal to the first vehicle control device 20.

[0048] Figure 2 The signal conversion unit 11 can include the first signal conversion unit 111 and the second signal conversion unit 112, the first vehicle control device 20 can be electrically connected with the detection unit 12 through the first signal conversion unit 111, and the detection unit 12 can also be electrically connected with the second vehicle control device 30 through the second signal conversion unit 112.

[0049] In some embodiments, the first USXGMII signal sent by the first to-be-detected vehicle control device 20 is converted into a first Ethernet signal by the first signal conversion unit 111 and sent to the detection unit 12, so that the detection unit 12 detects the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 by means of simulating and capturing Ethernet messages. The detection unit 12 sends the second Ethernet signal to the second signal conversion unit 112, the second signal conversion unit 112 converts the second Ethernet signal into a second USXGMII signal, and sends the second USXGMII signal to the second to-be-detected vehicle control device 30, so as to realize the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30.

[0050] In some embodiments, the first USXGMII signal sent by the first to-be-detected vehicle control device 20 is converted into a first Ethernet signal by the first signal conversion unit 111 and sent to the detection unit 12, so that the detection unit 12 detects the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30 by means of simulating and capturing Ethernet messages. The detection unit 12 sends the second Ethernet signal to the second signal conversion unit 112, the second signal conversion unit 112 converts the second Ethernet signal into a second USXGMII signal, and sends the second USXGMII signal to the second to-be-detected vehicle control device 30, so as to realize the communication between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30.

[0051] Figure 3 A structural schematic diagram of a signal conversion unit provided by the embodiments of the present disclosure is shown. Optionally, as shown in Figure 3 The signal conversion unit 11 includes a transmission rate selection end. The transmission rate selection end is used to receive a trigger level signal, so that the signal conversion unit 11 transmits signals at a data transmission rate corresponding to the trigger level signal.

[0052] Specifically, as shown in Figure 3As shown, the signal conversion unit 11 may, for example, include an SFP+ (Small Form-factor Pluggables) optical module, and the pin TD-, the pin TD+, the pin RD+, and the pin RD- in the SFP+ optical module are used to realize input and output of the Ethernet signal. The transmission rate selection end receives a trigger level signal, and the SFP+ optical module transmits a signal based on a data transmission rate corresponding to the trigger level signal. For example, the transmission rate selection end receives a low-level trigger signal, and the SFP+ optical module transmits a signal at a 2.5 Gbps data transmission rate corresponding to the low-level trigger level signal. The transmission rate selection end receives a high-level trigger signal, and the SFP+ optical module transmits a signal at a 1 Gbps data transmission rate corresponding to the high-level trigger level signal.

[0053] It should be noted that the specific correspondence between the trigger level signal and the data transmission rate and the specific value of the data transmission rate can be set according to the actual use of the SFP+ optical module, and the embodiments of the present disclosure do not limit this.

[0054] The transmission rate selection end of the signal conversion unit 11 is, for example, the RS1 pin and the RS0 pin in the SFP+ optical module. Figure 3 The RS1 pin and the RS0 pin in the SFP+ optical module. Figure 4 A structure diagram of an RS1 pin provided by an embodiment of the present disclosure is shown in the following figure, Figure 5 A structure diagram of an RS0 pin provided by an embodiment of the present disclosure is shown in the following figure. Figure 4 As shown in the figure, the RS1 pin may, for example, be electrically connected to the power supply end SFP_3.3V through a first resistor R1, or be grounded through a second resistor R2, Figure 5The RS0 pin can be electrically connected with the power supply end SFP_3.3V through the third resistor R3 or grounded through the fourth resistor R4. In the actual production process of the circuit board, the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are in a non-welding state at the initial stage of preparation. When the signal conversion unit 11 transmits signals at a data transmission rate of 2.5 Gbps and needs to pull down both the RS1 pin and the RS0 pin, the second resistor R2 and the fourth resistor R4 are welded to ground the RS1 pin through the second resistor R2 to pull down the RS1 pin, and ground the RS0 pin through the fourth resistor R4 to pull down the RS0 pin. When the signal conversion unit 11 transmits signals at a data transmission rate of 1 Gbps and needs to pull up any one of the RS1 pin and the RS0 pin and pull down the other pin, for example, the second resistor R2 is welded, the RS1 pin is grounded through the second resistor R2 to pull down the RS1 pin, the third resistor R3 is welded, and the RS0 pin is electrically connected with the power supply end SFP_3.3V through the third resistor R3 to pull up the RS0 pin. Or, the first resistor R1 is welded to electrically connect the RS1 pin with the power supply end SFP_3.3V through the first resistor R1 to pull up the RS1 pin; the fourth resistor R4 is welded to ground the RS0 pin through the fourth resistor R4 to pull down the RS0 pin.

[0055] In addition, the signal conversion unit 11 is further provided with magnetic beads FB1 and magnetic beads FB2. The magnetic beads FB1 and the magnetic beads FB2 have excellent filtering performance and can effectively absorb and suppress electromagnetic interference, thereby improving the working stability and reliability of the SFP+ optical module. The magnetic beads FB1 and the magnetic beads FB2 can also filter high-frequency noise in the signal to ensure the clarity and accuracy of signal transmission, thereby improving the overall performance of the signal conversion unit 11.

[0056] Figure 6 Another vehicle communication detection device provided by the embodiment of the present disclosure, Figure 7 The structure schematic diagram of a general input and output unit provided by the embodiment of the present disclosure. Figure 6 And Figure 7 The vehicle communication detection device 10 further comprises a general input and output unit 13. The general input and output unit 13 is used to transmit the CAN signal and / or the IO signal between the first to-be-detected vehicle control device 20 and the second to-be-detected vehicle control device 30.

[0057] Figure 6The vehicle communication detection device 10 is illustrated in the example. For example, it may include a general-purpose input / output unit 13. When the first vehicle control device 20 under test communicates with the second vehicle control device 30 under test, it is also necessary to transmit CAN signals and / or IO signals. The general-purpose input / output unit 13 is used to transmit CAN signals and / or IO signals from the first vehicle control device 20 under test to the second vehicle control device 30 under test, or the general-purpose input / output unit 13 transmits CAN signals and / or IO signals from the second vehicle control device 30 under test to the first vehicle control device 20 under test, thereby preventing the loss of CAN signals and / or IO signals during the communication detection process. Figure 7 The diagram exemplarily illustrates pin connections of General Purpose Input / Output Unit 13 to the CAN1_H, CAN1_L, CAN2_H, and CAN2_L signal lines for transmitting CAN signals. I / O signals may be transmitted using other pins within General Purpose Input / Output Unit 13, for example.

[0058] Optionally, such as Figure 6 As shown, the vehicle communication detection device 10 includes a first connector interface 14 and a second connector interface 15; the first vehicle control device 20 to be tested is electrically connected to the signal conversion unit 11 through the first connector interface 14; the second vehicle control device 30 to be tested is electrically connected to the signal conversion unit 11 through the second connector interface 15.

[0059] Specifically, such as Figure 6 As shown, the USXGMII signal transmitted by the first vehicle control device 20 under test is transmitted to the signal conversion unit 11 through the first connector interface 14, and the USXGMII signal transmitted by the second vehicle control device 30 under test is transmitted to the signal conversion unit 11 through the second connector interface 15. The signal conversion unit 11 converts the Ethernet signal into a USXGMII signal and transmits it to the first vehicle control device 20 under test through the first connector interface 14, and the signal conversion unit 11 converts the Ethernet signal into a USXGMII signal and transmits it to the second vehicle control device 30 under test through the second connector interface 15.

[0060] Figure 8 This is a schematic diagram of the structure of a first connector interface provided in an embodiment of this disclosure. Since the structures of the first connector interface 14 and the second connector interface 15 are the same, the specific structure of the second connector interface 15 can be referred to... Figure 8The first connector interface 14 and the second connector interface 15 may, for example, each be an IMSA connector. The USXGMII signals are transmitted through SGMII_TX_N, SGMII_TX_P, SGMII_RX_N and SGMII_RX_P in the first connector interface 14, and the CAN signals are transmitted through CAN1_H, CAN1_L, CAN2_H and CAN2_L. The first connector interface 14 may, for example, further include GPIO1, GPIO2, SPI_MOSI, SPI_CS, SPI_IRQ, SPI_SCLK, SPI_MISO and the like for transmitting relevant signals, which are well known to those skilled in the art and will not be limited herein.

[0061] Optionally, the signal conversion unit is plugged on the circuit board of the vehicle communication detection device.

[0062] Specifically, the signal conversion unit can be plugged on the circuit board of the vehicle communication detection device, so that the signal conversion unit is detachably connected to the circuit board, facilitating integrated design of the signal conversion unit and facilitating disassembly and maintenance of the signal conversion unit when the signal conversion unit fails.

[0063] Figure 9 A structural schematic diagram of a voltage conversion unit is provided for the embodiments of the present disclosure. Optionally, in combination with Figure 6 and Figure 9 The vehicle communication detection device 10 includes a voltage conversion unit 16, which includes a rectifier chip U1, a first feedback resistor R11 and a second feedback resistor R12. The input end of the rectifier chip U1 is connected to a power supply voltage, the signal conversion unit 11 and the first end of the first feedback resistor R11 are both electrically connected to the output end of the rectifier chip U1, the second end of the first feedback resistor R11 and the first end of the second feedback resistor R12 are both electrically connected to the feedback end FB of the rectifier chip U1, and the second end of the second feedback resistor R12 is grounded.

[0064] Figure 10 A structural schematic diagram of a power input interface is provided for the embodiments of the present disclosure. As shown in Figure 10 The power supply of the vehicle communication detection device 10 may, for example, be supplied through a Type C port, and the power supply voltage is generally a direct current of 5V.

[0065] The input end of the rectifier chip U1, for example, a VIN pin, is connected to a 5V power supply voltage. The output voltage of the rectifier chip U1 is determined by the first feedback resistor R11 and the second feedback resistor R12. The output voltage Vout of the rectifier chip U1 is Vfb*(R1+R2) / R2, where Vfb is the voltage at the feedback end FB, R1 is the resistance of the first feedback resistor R11, and R2 is the resistance of the second feedback resistor R12. Thus, the output voltage of the rectifier chip U1 is stabilized at 3.3V and provided to the signal conversion unit 11.

[0066] Figure 9 As shown in the middle, the first end of the output inductor L1 is electrically connected to the SW pin of the rectifier chip U1, and the second end of the output inductor L1 is electrically connected to the first end of the first feedback resistor R11. The output inductor L1 is used to filter the output signal.

[0067] For example, the rectifier chip U1 can be an LMR14050 chip from Texas Instruments, USA, or other models. The present embodiment is not limited in this regard.

[0068] Figure 11 A structural schematic diagram of a voltage monitoring unit according to an embodiment of the present disclosure is provided. Optionally, in combination with Figure 6 and Figure 11 The vehicle communication detection device 10 includes a voltage monitoring unit 17, which further includes a monitoring chip U2, a switch module Q1, and a prompt module D1. The input end of the monitoring chip U2 is electrically connected to the output end of the voltage conversion unit 16. The output end of the monitoring chip U2 is electrically connected to the first end of the switch module Q1. The second end of the switch module Q1 is electrically connected to the first end of the prompt module D1. The third end of the switch module Q1 is grounded. The second end of the prompt module D1 is electrically connected to the power supply end SFP_3.3V.

[0069] For example, the monitoring chip U2 can be a TPS3808 chip from Texas Instruments, USA. The monitoring chip U2 can be used to monitor whether the voltage provided by the voltage conversion unit 16 to the signal conversion unit 11 meets the working requirements of the signal conversion unit 11.

[0070] For example, when the monitoring chip U2 detects that the voltage provided by the signal conversion unit 11 is less than a preset voltage, the monitoring chip U2 outputs a level signal through the RESET# pin to make the switch module Q1 open, the branch where the prompt module D1 is located is disconnected, and the prompt module D1 is extinguished, thereby reminding the user that the system power supply is abnormal.

[0071] Figure 11The switch module Q1 is exemplarily shown as an N-type MOS tube, and the prompt module D1 is exemplarily shown as an LED light emitting element. When the voltage conversion unit 16 normally supplies power to the signal conversion unit 11, the monitoring chip U2 outputs a high-level signal to the gate of the N-type MOS tube through the RESET# pin, so that the N-type MOS tube is turned on, and the LED light emitting element is always on. When the monitoring chip U2 detects that the voltage provided by the voltage conversion unit 16 to the signal conversion unit 11 is less than a preset voltage, the monitoring chip U2 outputs a low-level signal to the gate of the N-type MOS tube through the RESET# pin, so that the N-type MOS tube is turned off, and the LED light emitting element is turned off.

[0072] The vehicle communication detection system provided by the embodiment of the present disclosure comprises the vehicle communication detection device provided by the above-mentioned embodiment, and therefore the vehicle communication detection system provided by the embodiment of the present disclosure has the beneficial effects of the above-mentioned embodiment, which will not be repeated here.

[0073] The vehicle provided by the embodiment of the present disclosure comprises the vehicle communication detection system provided by the above-mentioned embodiment, and therefore the vehicle provided by the embodiment of the present disclosure has the beneficial effects of the above-mentioned embodiment, which will not be repeated here.

[0074] In addition, the vehicle provided by the embodiment of the present disclosure can be a fuel automobile, a pure electric vehicle, or a hybrid electric vehicle, and the embodiment of the present disclosure does not make specific limitation on this.

[0075] The vehicle communication detection device, the vehicle communication detection system and the vehicle provided by the embodiment of the present disclosure use the signal conversion unit to realize the conversion between the USXGMII signal and the Ethernet signal, so that the detection unit can detect the communication between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device by simulating the Ethernet message and capturing the Ethernet message, and the signal conversion unit also converts the Ethernet signal fed back by the detection unit into the USXGMII signal and sends it to the first to-be-detected vehicle control device, so as to realize the communication between the first to-be-detected vehicle control device and the second to-be-detected vehicle control device.

[0076] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle communication detection device characterized by comprising: The vehicle communication detection device comprises a detection unit and a signal conversion unit. The signal conversion unit is connected between a first vehicle control device to be detected and a second vehicle control device to be detected, and is electrically connected with the detection unit. The signal conversion unit is configured to convert a USXGMII signal transmitted between the first vehicle control device to be detected and the second vehicle control device to be detected into an Ethernet signal, and transmit the Ethernet signal to the detection unit, and convert an Ethernet signal fed back by the detection unit into a USXGMII signal. The signal conversion unit comprises a first signal conversion unit and a second signal conversion unit.

2. The vehicle communication detection apparatus according to claim 1, characterized by The first signal conversion unit is configured to convert a first USXGMII signal transmitted by the first vehicle control device to be detected into a first Ethernet signal, and transmit the first Ethernet signal to the detection unit. The detection unit transmits a second Ethernet signal to the second signal conversion unit. The second signal conversion unit is configured to convert the second Ethernet signal into a second USXGMII signal, and transmit the second USXGMII signal to the second vehicle control device to be detected.

3. The vehicle communication detection apparatus according to claim 1, characterized by Alternatively, the second signal conversion unit is configured to convert a second USXGMII signal transmitted by the second vehicle control device to be detected into a second Ethernet signal, and transmit the second Ethernet signal to the detection unit. The detection unit transmits a first Ethernet signal to the first signal conversion unit.

4. The vehicle communication detection apparatus according to claim 1, characterized by The first signal conversion unit is configured to convert the first Ethernet signal into a first USXGMII signal, and transmit the first USXGMII signal to the first vehicle control device to be detected. The signal conversion unit comprises a transmission rate selection end.

5. The vehicle communication detection apparatus according to claim 1, characterized by The transmission rate selection end is configured to receive a trigger level signal, so that the signal conversion unit transmits signals at a data transmission rate corresponding to the trigger level signal.

6. The vehicle communication detection apparatus according to claim 1, characterized by The vehicle communication detection device further comprises a general input and output unit.

7. The vehicle communication detection apparatus according to claim 1, characterized by The general input and output unit is configured to transmit a CAN signal and / or an IO signal between the first vehicle control device to be detected and the second vehicle control device to be detected. The vehicle communication detection device further comprises a first connector interface and a second connector interface. The first vehicle control device to be detected is electrically connected with the signal conversion unit through the first connector interface. The second vehicle control device to be detected is electrically connected with the signal conversion unit through the second connector interface. The signal conversion unit is plugged on a circuit board of the vehicle communication detection device. The vehicle communication detection device further comprises a voltage conversion unit, which comprises a rectifier chip, a first feedback resistor and a second feedback resistor. The input end of the rectifier chip is connected with a power supply voltage, the signal conversion unit and the first end of the first feedback resistor are electrically connected with the output end of the rectifier chip, the second end of the first feedback resistor and the first end of the second feedback resistor are electrically connected with the feedback end of the rectifier chip, and the second end of the second feedback resistor is grounded.

8. The vehicle communication detection apparatus according to claim 7, characterized by The voltage monitoring unit comprises a monitoring chip, a switch module and a prompt module. The input end of the monitoring chip is electrically connected with the output end of the voltage conversion unit, the output end of the monitoring unit is electrically connected with the first end of the switch module, the second end of the switch module is electrically connected with the first end of the prompt module, the third end of the switch module is grounded, and the second end of the prompt module is electrically connected with a power supply end.

9. A vehicle communication detection system characterized by, The vehicle communication detection device according to any one of claims 1-8.

10. A vehicle characterized by comprising: The vehicle communication detection system according to claim 9.

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