Automobile high-speed signal transmission diagnosis circuit, automobile controller and automobile

Abstract

The invention discloses an automobile high-speed signal transmission diagnosis circuit, an automobile controller and an automobile, and relates to the field of high-speed serial signal transmission, the automobile high-speed signal transmission diagnosis circuit comprises a sending module, a receiving module, a high-speed signal transmission module, a voltage detection module and a differential driving module; the sending module encodes a received input signal into a first differential signal, the first differential signal drives the differential driving module, and the differential driving module outputs a second differential signal; one path of signal in the second differential signal is transmitted through the high-speed signal transmission module to form a third differential signal; the third differential signal is decoded through a receiving module, and whether the decoded output signal is consistent with the input signal or not is judged; and the voltage detection module and the high-speed signal transmission module form a loop and are used for detecting one path of signal in the second differential signal input by the high-speed signal transmission module and outputting an error checking and correcting signal. According to the invention, the transmission condition of the high-speed signal can be quickly diagnosed, and reliable transmission of the signal is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed serial signal transmission, and particularly to an automotive high-speed signal transmission diagnostic circuit, an automotive controller, and an automobile. Background Art

[0002] With the continuous development of technologies such as autonomous driving, vehicle networking, and electrification, the data transmission rate of automobiles is getting higher and higher, and there are more and more transmission channels. High-speed signals include surround cameras, Advanced Driving Assistance System (ADAS) cameras, Driver Monitor System (DMS), Occupancy Monitoring System (OMS), center console displays, instrument displays, co-pilot screens, and rear seat screens, etc., and it is easy to have fault phenomena such as data errors and error codes. Summary of the Invention

[0003] Embodiments of the present invention provide an automotive high-speed signal transmission diagnostic circuit, an automotive controller, and an automobile, which can quickly diagnose the transmission situation of high-speed signals and ensure reliable signal transmission.

[0004] In a first aspect, the present invention provides an automotive high-speed signal transmission diagnostic circuit, including: a sending module, a receiving module, a high-speed signal transmission module, a voltage detection module, and a differential driving module;

[0005] The sending module encodes the received input signal into a first differential signal, drives the differential driving module with the first differential signal, and the differential driving module outputs a second differential signal;

[0006] The second differential signal is transmitted through the high-speed signal transmission module to form a third differential signal;

[0007] The third differential signal is decoded by the receiving module, and it is judged whether the decoded output signal is consistent with the input signal. When they are inconsistent, the output error signal is changed into a fourth differential signal and then returned to the sending module;

[0008] The voltage detection module forms a loop with the high-speed signal transmission module, and is used to detect one of the signals in the second differential signal input to the high-speed signal transmission module, and output an error check and correction signal.

[0009] In some examples, the sending module includes: an encoder and a first operational amplifier;

[0010] The encoder includes a data interface, a clock interface, and several PRBS ports, and the input signal received by the data interface, the clock signal, and the output signal obtained by the multi-in-one switch from several PRBS signals are used to obtain a first differential signal through the first operational amplifier.

[0011] In some examples, the differential driving module includes: a differential circuit, a second capacitor C2, and a fourth capacitor C4;

[0012] The first differential signal serves as the input of the differential circuit, and the output second differential signal filters out the DC component through the second capacitor C2 and the fourth capacitor C4 respectively.

[0013] In some examples, the high-speed signal transmission module includes: a first connector, a transmission line, a second connector, a first capacitor C1, a third capacitor C3, an eighth resistor R8, and a ninth resistor R9;

[0014] One path of the signal after passing through the second capacitor C2 sequentially passes through the first connector, the transmission line, and the second connector, and then forms one path of the third differential signal through the first capacitor C1;

[0015] Another path of the signal after passing through the fourth capacitor C4 sequentially passes through the ninth resistor R9, the eighth resistor R8, and the third capacitor C3 to form another path of the third differential signal.

[0016] In some examples, the receiving module includes: a third operational amplifier, a fourth operational amplifier, and a decoder;

[0017] The third differential signal is amplified by the third operational amplifier and then input into the decoder. After being decoded by the decoder, it is judged whether it is consistent with the data signal, clock signal, and several PRBS signals inside the decoder. When it is inconsistent, the output error signal is used to obtain a fourth differential signal through the fourth operational amplifier.

[0018] In some examples, the voltage detection module includes: a first resistor R1, a sixth resistor R6, a seventh resistor R7, and a fifth operational amplifier;

[0019] The first resistor R1 is connected to the sixth resistor R6, and the sixth resistor R6 is connected to the second capacitor C2, the fifth operational amplifier, and the first connector;

[0020] The seventh resistor R7 is connected to the second connector and the first capacitor C1;

[0021] The power supply VCC forms a loop through the first resistor R1, the sixth resistor R6, the first connector, the transmission line, the second connector, and the seventh resistor R7;

[0022] The fifth operational amplifier outputs an error check and correction signal ECC.

[0023] In some examples, the circuit further includes: a second operational amplifier;

[0024] The input end of the second operational amplifier is connected to the output end of the differential circuit, and the single-ended signal amplified by the second operational amplifier is processed by the SOC.

[0025] In some examples, the circuit further includes: a constant current source;

[0026] The constant current source is connected to the differential circuit.

[0027] In a second aspect, the present invention provides an automotive controller including the automotive high-speed signal transmission diagnostic circuit described in any one of the above.

[0028] In a third aspect, the present invention provides an automobile including the above automotive controller.

[0029] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved:

[0030] (1) In the present invention, the input signal received by the sending module is encoded into a first differential signal, the first differential signal drives the differential driving module, and the differential driving module outputs a second differential signal; the second differential signal forms a third differential signal after being transmitted through the high-speed signal transmission module; the third differential signal is decoded by the receiving module, and it is judged whether the decoded output signal is consistent with the input signal; the voltage detection module and the high-speed signal transmission module form a loop, which is used to detect one of the signals in the second differential signal input by the high-speed signal transmission module and output an error check and correction signal. It can detect the channel of high-speed signal transmission, reduce errors and data loss caused by channel problems, and enhance reliability.

[0031] (2) According to the diagnosis situation of the present invention, pre-emphasis and equalization technologies can be adopted subsequently to compensate for the loss in the signal transmission process, further improving reliability.

[0032] (3) Through high-speed signal transmission technology, the working status and data transmission conditions of each module inside the vehicle can be monitored and recorded in real time. When a fault occurs, the problem can be quickly located by analyzing these data for targeted maintenance. The efficiency and convenience of maintenance are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of an automotive high-speed signal transmission diagnostic circuit provided by an embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of an automotive high-speed signal transmission diagnostic circuit provided by an embodiment of the present invention. Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0037] In the following description, specific embodiments of the present invention will be described with reference to steps and symbols executed by one or more computers, unless otherwise specified. Therefore, these steps and operations will be mentioned several times as being executed by a computer. As used herein, computer execution includes the operation of a computer processing unit that represents electronic signals in a structured form of data. This operation transforms the data or maintains it at a position in the computer's memory system, which can be reconfigured or otherwise changed in a manner well known to those skilled in the art to change the operation of the computer. The data structure maintained by the data is the physical location of the memory, which has specific characteristics defined by the data format. However, the principles of the present invention are described in the above text, which does not represent a limitation. Those skilled in the art will understand that the following various steps and operations can also be implemented in hardware.

[0038] The term "module" or "unit" used herein can be regarded as a software object executed on the computing system. Different components, modules, engines, and services herein can be regarded as implementation objects on the computing system. The devices and methods herein are preferably implemented in software, and of course, can also be implemented in hardware, all within the scope of protection of the present invention.

[0039] Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "an", "", and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present invention means the presence of features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0040] In the first embodiment of the present invention, a high-speed signal transmission diagnostic circuit for an automobile is provided, which relates to the field of transmitting high-speed serial signals from a camera to a host or from the host to a display part, or between other boards. As Figure 1 shown, it includes: a transmitting module 101, a receiving module 102, a high-speed signal transmission module 103, a voltage detection module 104, and a differential driving module 105;

[0041] The transmitting module 101 encodes the received input signal into a first differential signal, drives the differential driving module 105 with the first differential signal, and the differential driving module 105 outputs a second differential signal;

[0042] The second differential signal forms a third differential signal after being transmitted through the high-speed signal transmission module 103;

[0043] The third differential signal is decoded by the receiving module 102, and it is determined whether the decoded output signal is consistent with the input signal. When they are inconsistent, the output error signal is changed into a fourth differential signal and then returned to the transmitting module 101;

[0044] The voltage detection module 104 forms a loop with the high-speed signal transmission module, and is used to detect one of the signals in the second differential signal input to the high-speed signal transmission module, and output an error checking and correcting signal.

[0045] In another example, as Figure 2 shown, the transmitting module 101 includes: an encoder and a first operational amplifier;

[0046] The encoder includes a data interface, a clock interface, and several PRBS ports, and obtains the first differential signal through the first operational amplifier for the input signal received by the data interface, the clock signal, and the output signal obtained by the multi-in-one switch for several PRBS signals.

[0047] In a specific example, an encoder, which includes DATA, Clock, PRBS7, PRBS11, and PRBS15. After startup, it sequentially emits these 5 types of encodings. After passing through a MUX multi-in-one switch, it emits signal TX1.

[0048] In another example, as Figure 2 shown, the differential drive module 105 includes: a differential circuit, a second capacitor C2, and a fourth capacitor C4;

[0049] The first differential signal serves as the input of the differential circuit, and the output second differential signals respectively pass through the second capacitor C2 and the fourth capacitor C4 to filter out the DC components.

[0050] In a specific example, TX1 becomes TX1N and TX1P differential signals after passing through the first operational amplifier AMP1, drives the differential operational amplifiers Q1 and Q2, and then outputs differential signals TXP and TXN, which are emitted after filtering out the DC components through C2 and C4.

[0051] In another example, as Figure 2 shown, the high-speed signal transmission module 103 includes: a first connector, a transmission line, a second connector, a first capacitor C1, a third capacitor C3, an eighth resistor R8, and a ninth resistor R9;

[0052] One path of the signal after passing through the second capacitor C2 sequentially passes through the first connector, the transmission line, and the second connector, and then forms one path of the third differential signal after passing through the first capacitor C1;

[0053] Another path of the signal after passing through the fourth capacitor C4 sequentially passes through the ninth resistor R9, the eighth resistor R8, and the third capacitor C3 to form another path of the third differential signal.

[0054] In a specific example, the first connector Connector1, the coaxial cable Coax Cable (or shielded twisted pair), and the second connector Connector2 transmit high-speed signals.

[0055] In another example, as Figure 2 shown, the receiving module 102 includes: a third operational amplifier, a fourth operational amplifier, and a decoder;

[0056] The third differential signal is amplified by the third operational amplifier and then input to the decoder. The decoder decodes it and determines whether it is consistent with the internal data signal, clock signal, and several PRBS signals of the decoder. When they are inconsistent, the output error signal is used to obtain a fourth differential signal through the fourth operational amplifier.

[0057] In a specific example, the high-speed signal transmission module 103 receives the single-ended data sent by the peer end. After being filtered by the first capacitor C1, it forms the signal RX1P. The TXN, after passing through the fourth capacitor C4, the ninth resistor R9, and the eighth resistor R8, is filtered by the third capacitor C3 and then becomes RX1N to form the third differential signal, which is amplified and shaped by the third operational amplifier AMP3. The output signal RX_Data of AMP3 is input to the decoder Decoder. Inside it, there are DATA, Clock, PRBS7, PRBS11, and PRBS15. When it is started, it receives the signal from the sending end and sequentially compares it with the internal Clock, PRBS7, PRBS11, and PRBS15. If they are different, it outputs an error signal. The error signal is sent to the fourth operational amplifier AMP4 through TX_Data. AMP4 amplifies it into a fourth differential signal and returns it to the sending end. After being amplified by the second operational amplifier AMP2, it becomes a single-ended signal Return_Data to notify the system-on-chip (SoC) or the processor of the sending end for processing.

[0058] In another example, as Figure 2 shown, the voltage detection module 104 includes: the first resistor R1, the sixth resistor R6, the seventh resistor R7, and the fifth operational amplifier;

[0059] The first resistor R1 is connected to the sixth resistor R6. The sixth resistor R6 is connected to the second capacitor C2, the fifth operational amplifier, and the first connector;

[0060] The seventh resistor R7 is connected to the second connector and the first capacitor C1;

[0061] The power supply VCC forms a loop through the first resistor R1, the sixth resistor R6, the first connector, the transmission line, the second connector, and the seventh resistor R7;

[0062] The fifth operational amplifier outputs an error checking and correcting (ECC) signal. According to different ECC voltages, the connection conditions such as open circuit and short circuit of the loop can be judged.

[0063] In another example, as Figure 2 shown, the circuit further includes: a second operational amplifier;

[0064] The input end of the second operational amplifier is connected to the output end of the differential circuit. The single-ended signal amplified by the second operational amplifier is processed by the SOC.

[0065] In another example, as Figure 2 shown, the circuit further includes: a constant current source;

[0066] The constant current source is connected to the differential circuit.

[0067] In the high-speed signal transmission circuit diagnostic circuit of the vehicle controller provided by the embodiment of the present invention, the input signal received is encoded by the sending module into a first differential signal, the first differential signal drives the differential driving module, and the differential driving module outputs a second differential signal; the second differential signal forms a third differential signal after being transmitted by the high-speed signal transmission module; the third differential signal is decoded by the receiving module, and it is judged whether the decoded output signal is consistent with the input signal; the voltage detection module and the high-speed signal transmission module form a loop, which is used to detect one of the signals in the second differential signal input by the high-speed signal transmission module and output an error checking and correcting signal. It has the advantages of simple circuit, strong versatility, high efficiency, low loss, and adaptability to various environments.

[0068] In the second embodiment of the present invention, a vehicle controller including the vehicle high-speed signal transmission diagnostic circuit in the first embodiment is further provided. The vehicle controller is an electronic device for managing and controlling various systems and components of the vehicle. The vehicle controller is one of the most important components in the modern vehicle electronic control system. The vehicle controller can process data and signals through a computer and control the operation of vehicle-related components, so that the vehicle can achieve the best performance and fuel efficiency. In modern vehicles, the controller can control a series of systems, such as engines, transmissions, brakes, steering, in-vehicle communication, and safety systems. The embodiment of the present application relates to the field from the camera to the host or from the host to the display part, or other fields where high-speed serial signals need to be transmitted between boards. Specifically, it relates to the vehicle main control part, wiring harness, central control display screen, instrument display screen, co-pilot screen, and rear row screen. Since currently high-definition screens are stacked with high-refresh screens, the transmission rate is high, and data transmission failure phenomena such as black screens, colored screens, error codes, wrong codes, and transmission interruptions are likely to occur. The vehicle controller provided by the embodiment of the present application including the vehicle high-speed signal transmission diagnostic circuit in the first embodiment can timely discover problems, reduce video transmission anomalies, provide problem directions for design, optimize product design, provide guidance for after-sales, and improve user experience.

[0069] Such as Figure 1As shown in the figure, the high-speed signal transmission diagnostic circuit in the vehicle controller includes: a transmission module 101, a reception module 102, a high-speed signal transmission module 103, a voltage detection module 104, and a differential drive module 105; the transmission module 101 encodes the received input signal into a first differential signal, drives the differential drive module 105 with the first differential signal, and the differential drive module 105 outputs a second differential signal; the second differential signal is transmitted through the high-speed signal transmission module 103 to form a third differential signal; the third differential signal is decoded by the reception module 102, and it is judged whether the decoded output signal is consistent with the input signal. When they are inconsistent, the output error signal is changed into a fourth differential signal and then returned to the transmission module 101; the voltage detection module 104 forms a loop with the high-speed signal transmission module, and is used to detect one of the signals in the second differential signal input to the high-speed signal transmission module, and output an error check and correction signal.

[0070] In a specific implementation, as Figure 2 shown, the high-speed signal transmission diagnostic circuit of the vehicle includes circuits such as an encoder, a differential operational amplifier, a constant current source, a differential drive circuit, a connector, a coaxial cable, an encoder, and a voltage detection branch. After the circuit is started, VCC forms a loop through the first resistor R1, the sixth resistor R6, the first connector (Connector1), the coaxial cable (coaxial cable), the second connector (Connector2), and the seventh resistor R7. The fifth operational amplifier AMP5 detects the voltage and outputs ECC. According to different ECC voltages, the connection conditions such as open circuit and short circuit of the loop can be judged.

[0071] In another specific example, the encoder Encoder includes DATA, Clock, PRBS7, PRBS11, and PRBS15. After startup, these 5 kinds of codes are sent out in sequence. After passing through the MUX multi-in-one switch, the signal TX1 is sent out.

[0072] In another specific example, the signal TX1 becomes TX1N and TX1P differential signals after passing through the first operational amplifier AMP1, drives the differential operational amplifiers Q1 and Q2, and then outputs the differential signals TXP and TXN, which are sent out after filtering out the DC components through the second capacitor C2 and the fourth capacitor C4.

[0073] In another specific example, the second operational amplifier AMP2 receives the differential signal returned from the opposite end, becomes a single-ended data, and is used by the SOC or the processor.

[0074] In another specific example, the first connector Connector1, the coaxial cable Coax Cable (or shielded twisted pair), and the second connector Connector2 transmit high-speed signals.

[0075] In another specific example, the single-ended data sent by the peer end is filtered by the first capacitor C1 and the third capacitor C3 and then becomes a differential signal to be amplified and shaped by the third operational amplifier AMP3.

[0076] In another specific example, the output signal RX_Data of the third operational amplifier AMP3 is input to the decoder Decoder. Inside it, there are DATA, Clock, PRBS7, PRBS11, and PRBS15. When it is started, it receives the signal from the sending end and sequentially compares it with the internal Clock, PRBS7, PRBS11, and PRBS15. If they are different, an error signal is output. The error signal is sent to the fourth operational amplifier AMP4 through TX_Data. The fourth operational amplifier AMP4 amplifies it into a differential signal and returns it to the sending end. After being amplified by the second operational amplifier AMP2, it becomes a single-ended signal Return Data to notify the SOC of the sending end.

[0077] The vehicle controller provided by the embodiment of the present invention has its core part related to a vehicle high-speed signal transmission diagnosis circuit. It encodes the received input signal into a first differential signal through a sending module, drives a differential driving module with the first differential signal, and the differential driving module outputs a second differential signal; the second differential signal is transmitted through a high-speed signal transmission module to form a third differential signal; the third differential signal is decoded by a receiving module, and it is judged whether the decoded output signal is consistent with the input signal; a voltage detection module and the high-speed signal transmission module form a loop, which is used to detect one of the signals in the second differential signal input to the high-speed signal transmission module and output an error checking and correcting signal. It has the advantages of simple circuit, strong versatility, high efficiency, low loss, and adaptability to various environments.

[0078] In the third embodiment of the present invention, a vehicle including a vehicle controller with a vehicle high-speed signal transmission diagnosis circuit is provided.

[0079] In several embodiments provided by the present invention, it should be understood that the disclosed devices, etc., can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation.

[0080] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0081] In addition, in each embodiment of the present invention, each functional unit may be integrated into one processing unit, may exist separately as individual physical units, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0082] The above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer-readable storage medium. The above-mentioned software functional unit stored in a storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs.

[0083] The above has introduced in detail an automotive high-speed signal transmission diagnostic circuit and an automotive controller provided by the embodiments of the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automotive high-speed signal transmission diagnostic circuit, characterized in that, Including: A sending module, a receiving module, a high-speed signal transmission module, a voltage detection module, and a differential driving module; The sending module encodes the received input signal into a first differential signal, drives the differential driving module with the first differential signal, and the differential driving module outputs a second differential signal; The second differential signal is transmitted through the high-speed signal transmission module to form a third differential signal; The third differential signal is decoded by the receiving module, and it is judged whether the decoded output signal is consistent with the input signal. When they are inconsistent, the output error signal is changed into a fourth differential signal and returned to the sending module; The voltage detection module and the high-speed signal transmission module form a loop, which is used to detect one of the signals in the second differential signal input to the high-speed signal transmission module and output an error checking and correcting signal.

2. The automotive high-speed signal transmission diagnostic circuit according to claim 1, wherein The sending module includes: an encoder and a first operational amplifier; The encoder includes a data interface, a clock interface, and several PRBS ports. The input signal, clock signal, and the output signal obtained by a multi-in-one switch of several PRBS signals received by the data interface pass through the first operational amplifier to obtain a first differential signal.

3. The automotive high-speed signal transmission diagnostic circuit according to claim 2, wherein The differential driving module includes: a differential circuit, a second capacitor C2, and a fourth capacitor C4; The first differential signal is used as the input of the differential circuit, and the output second differential signal filters out the DC component through the second capacitor C2 and the fourth capacitor C4 respectively.

4. The automotive high-speed signal transmission diagnostic circuit according to claim 3, characterized in that The high-speed signal transmission module includes: a first connector, a transmission line, a second connector, a first capacitor C1, a third capacitor C3, an eighth resistor R8, and a ninth resistor R9; One of the signals after passing through the second capacitor C2 passes through the first connector, the transmission line, and the second connector in sequence, and then passes through the first capacitor C1 to form one of the signals of the third differential signal; The other signal after passing through the fourth capacitor C4 passes through the ninth resistor R9, the eighth resistor R8, and the third capacitor C3 in sequence to form the other signal of the third differential signal.

5. The automotive high-speed signal transmission diagnostic circuit according to claim 4, wherein The receiving module includes: a third operational amplifier, a fourth operational amplifier, and a decoder; The third differential signal is amplified by the third operational amplifier and then input to the decoder. The decoder decodes it and judges whether it is consistent with the internal data signal, clock signal, and several PRBS signals of the decoder. When they are inconsistent, the output error signal passes through the fourth operational amplifier to obtain a fourth differential signal.

6. The automotive high-speed signal transmission diagnostic circuit according to claim 5, wherein The voltage detection module includes: a first resistor R1, a sixth resistor R6, a seventh resistor R7, and a fifth operational amplifier; The first resistor R1 is connected to the sixth resistor R6, and the sixth resistor R6 is connected to the second capacitor C2, the fifth operational amplifier, and the first connector; The seventh resistor R7 is connected to the second connector and the first capacitor C1; The power supply VCC forms a loop through the first resistor R1, the sixth resistor R6, the first connector, the transmission line, the second connector, and the seventh resistor R7; The fifth operational amplifier outputs an error checking and correcting signal ECC.

7. The automotive high-speed signal transmission diagnostic circuit according to claim 6, characterized in that, The circuit further includes: a second operational amplifier; The input terminal of the second operational amplifier is connected to the output terminal of the differential circuit, and the single-ended signal amplified by the second operational amplifier is processed by the SOC.

8. The automotive high-speed signal transmission diagnostic circuit according to claim 7, wherein The circuit further includes: a constant current source; The constant current source is connected to the differential circuit.

9. An automotive controller including the automotive high-speed signal transmission diagnostic circuit according to any one of claims 1 to 8.

10. An automobile including the automotive controller according to claim 9.

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