Signal chain diagnosis system

Abstract

The application discloses a signal chain diagnosis system, comprising: a diagnosis execution module having an input end, a first output end and a control end, the input end receiving a to-be-processed signal, and the control end receiving a diagnosis trigger instruction; the main function circuit is provided with an input end and an output end, the input end is coupled with the first output end of the diagnosis execution module, and the output end provides a diagnosis output signal; the control module is provided with two output ends, the first output end provides a diagnosis trigger instruction, and the second output end provides a verification trigger instruction; the verification module is provided with two input ends, the first input end receives a verification trigger instruction, and the second input end receives a diagnosis output signal; the diagnosis execution module responds to the diagnosis trigger instruction to generate a first recombination signal and / or a second recombination signal, or responds to the diagnosis trigger instruction to transmit a to-be-processed signal to the main function circuit. According to the technical scheme, multiplexing of the main function circuit can be realized, and the diagnosis coverage rate of the signal chain is improved.

Description

Technical Field

[0001] This application relates to the field of circuit technology, specifically to a signal chain diagnostic system. Background Technology

[0002] As the core unit for vehicles to perceive their environment and status, the reliability of sensor data directly determines the realization of the vehicle's safety functions. Taking an angle sensor as an example, if its signal chain circuit fails, it may lead to a single point of failure that violates the target safety indicators and threatens driving safety.

[0003] Traditional safety mechanisms improve diagnostic coverage through redundant design or independent diagnostic modules, but these solutions significantly increase chip area and design complexity. For signal chain failure modes, related technologies require additional dedicated detection circuits or parallel redundant channels, leading to increased costs. Some solutions attempt to reuse parts of the main functional circuitry for self-testing, but this has two major limitations: first, the reused logic does not systematically cover the entire signal chain path, resulting in residual failure mode risks; second, insufficient coupling between the detection cycle and the main functional runtime sequence may introduce signal delays or misjudgments. For example, traditional periodic detection may affect output continuity by interrupting the main signal processing flow, especially in high-speed dynamic scenarios, easily causing data distortion. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this application is how to improve the diagnostic coverage and identification reliability of signal chains.

[0005] To address at least one of the aforementioned technical problems, this application discloses a signal chain diagnostic system.

[0006] According to one aspect of this application, a signal chain diagnostic system is provided, comprising:

[0007] The diagnostic execution module has an input terminal, a first output terminal, and a control terminal, wherein the input terminal receives the signal to be processed, and the control terminal receives the diagnostic trigger command.

[0008] The main functional circuit has an input terminal and an output terminal, wherein the input terminal is coupled to the first output terminal of the diagnostic execution module, and the output terminal provides a diagnostic output signal;

[0009] The control module has a first output terminal and a second output terminal, wherein the first output terminal provides a diagnostic trigger command and the second output terminal provides a verification trigger command;

[0010] The verification module has a first input terminal and a second input terminal, wherein the first input terminal receives a verification trigger command and the second input terminal receives a diagnostic output signal;

[0011] The diagnostic execution module, in response to a diagnostic trigger command, generates a first reconstructed signal and / or a second reconstructed signal based on the signal to be processed; or,

[0012] The diagnostic execution module responds to the diagnostic trigger command and transmits the signal to be processed to the main functional circuit.

[0013] Optionally, the control module periodically generates diagnostic trigger commands and verification trigger commands.

[0014] Optionally, the system also includes:

[0015] The signal acquisition module has an input terminal and an output terminal, wherein the input terminal receives the raw signal and the output terminal provides the signal to be processed.

[0016] Optionally, the main functional circuit includes:

[0017] The analog front end has an input terminal and an output terminal; wherein the input terminal receives at least one of a first recombined signal, a second recombined signal, or a signal to be processed, and the output terminal provides one of a first diagnostic signal, a third diagnostic signal, or a first processing signal;

[0018] An analog-to-digital converter has an input terminal and an output terminal; wherein the input terminal receives one of a first diagnostic signal, a third diagnostic signal, or a first processed signal, and the output terminal provides one of a second diagnostic signal, a fourth diagnostic signal, or a second processed signal;

[0019] A digital processor has an input terminal and an output terminal; wherein the input terminal receives one of a second diagnostic signal, a fourth diagnostic signal, or a second processing signal, and the output terminal provides one of a diagnostic output signal or a processing output signal.

[0020] Optionally, when the diagnostic trigger instruction is in the first state, the first output of the diagnostic execution module provides a first reassembly signal;

[0021] The input of the analog front end receives the first recombined signal, and the output of the analog front end provides the first diagnostic signal;

[0022] The input of the analog-to-digital converter receives a first diagnostic signal, and the output of the analog-to-digital converter provides a second diagnostic signal;

[0023] The digital processor receives a second diagnostic signal at its input and provides a diagnostic output signal at its output.

[0024] The verification module responds to the verification trigger command, compares the diagnostic output signal with the first preset standard signal, and determines the diagnostic verification result based on the comparison result.

[0025] Optionally, the number of simulated front-ends can be one or more.

[0026] The number of analog-to-digital converters is equal to the number of analog front-ends, and there is a one-to-one correspondence between analog-to-digital converters and analog front-ends.

[0027] Optionally, when there are two analog front-ends, the diagnostic execution module also has a second output terminal, and the first and second output terminals of the diagnostic execution module are respectively coupled to the input terminals of the two analog front-ends;

[0028] When the diagnostic trigger command is in the first state, the first output of the diagnostic execution module provides a first reassembly signal, and the second output of the diagnostic execution module provides a second reassembly signal.

[0029] One of the two analog front-ends receives a first reconstructed signal at its input and provides a first diagnostic signal at its output; the other of the two analog front-ends receives a second reconstructed signal at its input and provides a third diagnostic signal at its output.

[0030] One of the two analog-to-digital converters receives a first diagnostic signal at its input and provides a second diagnostic signal at its output; the other of the two analog-to-digital converters receives a third diagnostic signal at its input and provides a fourth diagnostic signal at its output.

[0031] The digital processor receives a second diagnostic signal and a fourth diagnostic signal at its input terminal, and provides a diagnostic output signal at its output terminal.

[0032] Optionally, the system also includes:

[0033] The graphics generator has an input terminal and an output terminal; the input terminal receives diagnostic trigger commands, and the output terminal provides a second preset standard signal.

[0034] The input terminal of the main function circuit is coupled to the output terminal of the graphics generator and receives the second preset standard signal.

[0035] Optionally, when the diagnostic trigger command is in the first state, the output of the graphics generator provides a second preset standard signal;

[0036] The input of the analog front end receives a second preset standard signal, and the output of the analog front end provides a fifth diagnostic signal;

[0037] The input of the analog-to-digital converter receives the fifth diagnostic signal, and the output of the analog-to-digital converter provides the sixth diagnostic signal;

[0038] The digital processor receives the sixth diagnostic signal at its input and provides a diagnostic output signal at its output.

[0039] Optionally, when the diagnostic trigger command is in the second state, the first output of the diagnostic execution module provides the signal to be processed, and the input of the main function circuit receives the signal to be processed.

[0040] Optionally, the input of the analog front end receives the signal to be processed, and the output provides the first processing signal;

[0041] The analog-to-digital converter receives a first processing signal at its input and provides a second processing signal at its output.

[0042] The digital processor receives a second processing signal at its input and provides a processing output signal at its output.

[0043] In this embodiment, the signal chain diagnostic system includes a diagnostic execution module, a main functional circuit, a control module, and a verification module. After receiving a diagnostic trigger command from the control module, the diagnostic execution module generates a first recombined signal and / or a second recombined signal based on the signal to be processed, and transmits them to the main functional circuit. The diagnostic signal output by the main functional circuit is further transmitted to the verification module, which analyzes and compares it to determine whether the signal chain is functioning correctly. This enables the system to perform online fault detection while in operation, identifying faults without pausing system operation, thereby improving diagnostic efficiency.

[0044] Furthermore, the system exhibits high flexibility and adaptability. The diagnostic and verification trigger commands provided by the control module enable the system to adapt to different operating modes. In diagnostic mode, the diagnostic execution module generates a reconfigured signal, allowing the main functional circuit to test the operational status of each part of the signal chain. Simultaneously, it works with the verification module to analyze the output signal of the main functional circuit, thereby ensuring the integrity of the signal chain and the accuracy of signal diagnosis. In normal operating mode, the diagnostic execution module directly transmits the signal to be processed, causing the main functional circuit to operate as intended, thus achieving the multiplexing of the main functional circuit without adding any additional structures.

[0045] By working together among the various structures in the signal chain diagnostic system, the diagnostic coverage of the signal chain can be improved, and real-time online diagnostics of the signal chain, signal integrity assurance, and system flexibility can be achieved, thereby enhancing the reliability and maintainability of the system.

[0046] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of this application, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0048] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0049] Figure 1 A first architecture diagram of a signal chain diagnostic system provided in a specific embodiment of this disclosure;

[0050] Figure 2 A schematic diagram of a second architecture of a signal chain diagnostic system provided in a specific embodiment of this disclosure;

[0051] Figure 3 A schematic diagram of a third architecture of a signal chain diagnostic system provided in a specific embodiment of this disclosure;

[0052] Figure 4 A schematic diagram of the architecture of another signal chain diagnostic system provided in a specific embodiment of this disclosure;

[0053] Figure 5 A schematic diagram of the architecture of another signal chain diagnostic system provided in a specific embodiment of this disclosure;

[0054] Figure 6 A schematic diagram of the first process corresponding to the signal chain diagnostic method provided in a specific embodiment of this disclosure;

[0055] Figure 7 A schematic diagram of the second process corresponding to the signal chain diagnostic method provided in a specific embodiment of this disclosure;

[0056] Figure 8 A schematic diagram of the third process corresponding to the signal chain diagnostic method provided in a specific embodiment of this disclosure;

[0057] Figure 9 This is a schematic diagram of the fourth process corresponding to the signal chain diagnosis method provided in a specific embodiment of this disclosure.

[0058] Explanation of reference numerals in the attached figures:

[0059] 10-Diagnostic Execution Module;

[0060] 20-Main functional circuit, 21-Analog front end, 22-Analog-to-digital converter, 23-Digital processor;

[0061] 30 - Control Module;

[0062] 40 - Verification module;

[0063] 50 - Signal Acquisition Module;

[0064] 60 - Graphics Generator. Detailed Implementation

[0065] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0066] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0067] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0068] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0069] In this document, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0070] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0071] Figure 1This is a schematic diagram of the first architecture of a signal chain diagnostic system provided in a specific embodiment of the present disclosure, as shown below. Figure 1 As shown, a signal chain diagnostic system includes:

[0072] The diagnostic execution module 10 has an input terminal, a first output terminal, and a control terminal, wherein the input terminal receives a signal to be processed, and the control terminal receives a diagnostic trigger command.

[0073] The main functional circuit 20 has an input terminal and an output terminal, wherein the input terminal is coupled to the first output terminal of the diagnostic execution module 10, and the output terminal provides a diagnostic output signal;

[0074] The control module 30 has a first output terminal and a second output terminal, wherein the first output terminal provides a diagnostic trigger command and the second output terminal provides a verification trigger command; the control module 30 periodically generates diagnostic trigger commands and verification trigger commands.

[0075] The verification module 40 has a first input terminal and a second input terminal, wherein the first input terminal receives a verification trigger command and the second input terminal receives a diagnostic output signal;

[0076] In response to a diagnostic trigger command, the diagnostic execution module 10 generates a first reconstructed signal and / or a second reconstructed signal based on the signal to be processed; or,

[0077] In response to the diagnostic trigger command, the diagnostic execution module 10 transmits the signal to be processed to the main function circuit 20.

[0078] Optionally, the signal chain diagnostic system may include a diagnostic execution module 10, a main function circuit 20 coupled to the diagnostic execution module 10, a verification module 40 connected to the main function circuit 20, and a control module 30 connected to the verification module 40 and the diagnostic execution module 10 respectively.

[0079] Specifically, the control module 30 is used to send diagnostic execution commands to the diagnostic command module to switch the operating mode of the signal chain diagnostic system; and the control module 30 is also used to send verification trigger commands to the verification module 40 so that the verification module 40 can verify the signal. The configuration of the control module 30 enables the signal chain diagnostic system to detect signal chain faults without interrupting normal operation, improving system reliability and the efficiency and convenience of signal chain fault detection.

[0080] In addition, the control module 30 can periodically generate diagnostic trigger commands and verification trigger commands. Alternatively, the verification trigger commands can be considered to be generated periodically, while the diagnostic trigger commands are continuously generated. However, the diagnostic trigger commands corresponding to the first state (diagnostic working mode) are generated periodically and synchronously with the verification trigger commands. Periodically generating the diagnostic and verification trigger commands for the first state enables the signal chain diagnostic system to perform signal chain function testing according to a preset cycle, thereby detecting potential faults in advance, avoiding sudden system failures due to signal anomalies, and improving the safety, reliability, and real-time performance of signal chain function testing. The preset cycle can be set according to the specific application scenario of the signal chain diagnostic system to match specific application requirements.

[0081] The diagnostic execution module 10 is used to receive diagnostic trigger commands and switch to the corresponding working mode according to the diagnostic trigger commands. Furthermore, the diagnostic execution module 10 is also used to receive signals to be processed and, depending on the different working modes, to transmit the signals to be processed to the main functional circuit 20, or to reconstruct the signals to be processed to obtain reconstructed signals and transmit the reconstructed signals to the main functional circuit 20; wherein, the reconstructed signals can be divided into a first reconstructed signal and a second reconstructed signal according to the architecture of different signal chain diagnostic systems. In this embodiment, the diagnostic execution module 10 transmits the first reconstructed signal to the main functional circuit 20.

[0082] The main function circuit 20 is used to process the signal to be processed in normal working mode; or, the main function circuit 20 is used to process the reconstructed signal in diagnostic working mode and transmit the processed signal, i.e. the diagnostic output signal, to the verification module 40.

[0083] The verification module 40 receives verification trigger commands to verify the signal chain function in conjunction with the diagnostic output signals. Additionally, the verification module 40 stores preset standard signals, which serve as reference values ​​for signal chain function detection and can verify the signal chain function in conjunction with the diagnostic output signals. These preset standard signals can be obtained from user input or updated and determined during the operation of the signal chain diagnostic system. The preset standard signals can be divided into a first preset standard signal and a second preset standard signal; in this embodiment, the preset standard signal is the first preset standard signal.

[0084] In one specific embodiment, the signal chain diagnostic system can correspond to different operating modes, such as a normal operating mode and a diagnostic operating mode, so that the main functional circuit 20 can be multiplexed based on the system, and online diagnosis can be completed without interrupting operation. The diagnostic execution instruction can correspond to a first state and a second state, where the first state can correspond to the diagnostic operating mode and the second state can correspond to the normal operating mode.

[0085] Figure 2 This is a schematic diagram of the second architecture of a signal chain diagnostic system provided in a specific embodiment of this disclosure, as shown below. Figure 2 As shown, in this embodiment, the signal chain diagnostic system may further include:

[0086] The signal acquisition module 50 has an input terminal and an output terminal, wherein the input terminal receives the raw signal and the output terminal provides the signal to be processed.

[0087] In a specific embodiment, a signal acquisition module 50 may be provided upstream of the input terminal of the diagnostic execution module 10. The signal acquisition module 50 may select different types of sensors or multi-sensor fusion structures according to different application scenarios of the signal chain diagnostic system, or may select other structures that can acquire and transmit signals.

[0088] Specifically, the signal acquisition module 50 can acquire the original signals generated, transmitted, and sent upstream, and can determine the signal to be processed from the original signals according to the working mode and application scenario of the signal chain diagnostic system, and send it to the diagnostic execution module 10.

[0089] Figure 3 This is a schematic diagram of the third architecture of a signal chain diagnostic system provided in a specific embodiment of this disclosure, as shown below. Figure 3 As shown, in this embodiment, the main functional circuit 20 may include:

[0090] The analog front end 21 has an input terminal and an output terminal; wherein the input terminal receives at least one of a first recombined signal, a second recombined signal, or a signal to be processed, and the output terminal provides one of a first diagnostic signal, a third diagnostic signal, or a first processing signal;

[0091] The analog-to-digital converter 22 has an input terminal and an output terminal; wherein the input terminal receives one of a first diagnostic signal, a third diagnostic signal, or a first processed signal, and the output terminal provides one of a second diagnostic signal, a fourth diagnostic signal, or a second processed signal.

[0092] The digital processor 23 has an input terminal and an output terminal; wherein the input terminal receives one of a second diagnostic signal, a fourth diagnostic signal, or a second processing signal, and the output terminal provides one of a diagnostic output signal or a processing output signal.

[0093] In one specific embodiment, the main functional circuit 20 may include an analog front-end 21, an analog-to-digital converter 22, and a digital processor 23, which are coupled in sequence. In this embodiment, the analog front-end 21 is connected to the diagnostic execution module 10. When the working mode is the normal working mode, that is, when the diagnostic execution instruction corresponds to the second state, the analog front-end 21 receives the signal to be processed and outputs a first processing signal, the analog-to-digital converter 22 receives the first processing signal and outputs a second processing signal, and the digital processor 23 receives the second processing signal and outputs a diagnostic output signal.

[0094] When the working mode is the diagnostic working mode, that is, when the diagnostic execution instruction corresponds to the first state, the analog front end 21 receives the first recombination signal and outputs the first diagnostic signal, the analog-to-digital converter 22 receives the first diagnostic signal and outputs the second diagnostic signal, and the digital processor 23 receives the second diagnostic signal and outputs the diagnostic output signal.

[0095] In the main functional circuit 20, the signal received from the diagnostic execution module 10 is amplified, filtered, and offset corrected by the analog front end 21, which can improve the signal quality, reduce high-frequency noise and offset error, and improve the measurement accuracy. The optimized signal is then transmitted to the analog-to-digital converter 22 to be converted into a digital signal, which can improve the signal stability, reduce signal distortion, and improve the system robustness.

[0096] In addition, the first diagnostic signal generated by the analog front-end 21 and the second diagnostic signal generated by the analog-to-digital converter 22 in the main functional circuit 20 can also be sent to the verification module 40 for signal verification. By comparing multi-level diagnostic signals and setting up different checkpoints, the reliability of fault detection can be improved, and various failures in the signal chain circuit can be identified efficiently.

[0097] In this embodiment, the signal chain diagnostic system can execute different operating modes under the control of the control module 30. Specifically, when the diagnostic trigger command is in the first state:

[0098] The first output of the diagnostic execution module 10 provides a first reconstructed signal; the input of the analog front-end 21 receives the first reconstructed signal, and the output of the analog front-end 21 provides a first diagnostic signal; the input of the analog-to-digital converter 22 receives the first diagnostic signal, and the output of the analog-to-digital converter 22 provides a second diagnostic signal; the input of the digital processor 23 receives the second diagnostic signal, and the output of the digital processor 23 provides a diagnostic output signal; the verification module 40 responds to the verification trigger command, compares the diagnostic output signal with the first preset standard signal, and determines the diagnostic verification result based on the comparison result.

[0099] Specifically, if the difference between the diagnostic output signal and the first preset standard signal is within the tolerance range, the signal chain diagnosis is considered successful, and the signal chain can perform its normal operation. If the difference is not within the tolerance range, it indicates that the signal chain has a functional abnormality.

[0100] When the diagnostic trigger command is in the second state, the first output of the diagnostic execution module 10 provides the signal to be processed, and the input of the main function circuit 20 receives the signal to be processed. Specifically, in the main function circuit 20, the input of the analog front-end 21 receives the signal to be processed, and its output provides a first processing signal; the input of the analog-to-digital converter 22 receives the first processing signal, and its output provides a second processing signal; the input of the digital processor 23 receives the second processing signal, and its output provides a processed output signal.

[0101] Another signal chain diagnostic system according to an embodiment of this application is as follows: Figure 4 As shown, the signal chain diagnostic system has multiple analog front-ends 21, and the number of analog-to-digital converters 22 is equal to the number of analog front-ends 21, with each analog-to-digital converter 22 corresponding to one analog front-end 21.

[0102] In the signal chain diagnostic system disclosed in this application, the number of analog front-ends 21 can be one or more. When the number of analog front-ends 21 is one, it corresponds to the system architecture of the signal chain diagnostic system described in the previous embodiment; when the number of analog front-ends 21 is multiple, it corresponds to the system architecture of the signal chain diagnostic system in this embodiment. In this embodiment, the signal chain diagnostic system is described using two analog front-ends 21 as an example.

[0103] In this embodiment, the signal chain diagnostic system includes a signal acquisition module 50, a diagnostic execution module 10, a main functional circuit 20, a control module 30, and a verification module 40. The connections and functions between the various structures remain unchanged. The internal structure of the main functional circuit 20 changes, and the signal transmission of the signal acquisition module 50 and the diagnostic execution module 10 changes accordingly. The verification method of the verification module 40 also changes. The internal structure of the main functional circuit 20 and its related changes will be described below; other structures and their unchanged functions will not be elaborated upon in this embodiment.

[0104] Specifically, when there are two analog front-ends 21, the diagnostic execution module 10 also has a second output terminal, and the first output terminal and the second output terminal of the diagnostic execution module 10 are respectively coupled to the input terminals of the two analog front-ends 21.

[0105] When the diagnostic trigger command is in the first state, the first output terminal of the diagnostic execution module 10 provides a first reconstruction signal, and the second output terminal of the diagnostic execution module 10 provides a second reconstruction signal.

[0106] One of the two analog front-ends 21 receives a first reconstructed signal at its input and provides a first diagnostic signal at its output; the other of the two analog front-ends 21 receives a second reconstructed signal at its input and provides a third diagnostic signal at its output.

[0107] One of the two analog-to-digital converters 22 receives a first diagnostic signal at its input and provides a second diagnostic signal at its output; the other analog-to-digital converter 22 receives a third diagnostic signal at its input and provides a fourth diagnostic signal at its output.

[0108] The digital processor 23 receives a second diagnostic signal and a fourth diagnostic signal at its input terminal and provides a diagnostic output signal at its output terminal.

[0109] In one specific embodiment, the number of analog front-ends 21 and analog-to-digital converters 22 in the main functional circuit 20 is the same, but the digital processor 23 can always be kept at one. When there are two analog front-ends 21, the signal chain diagnostic system does not need to perform diagnosis and verification in conjunction with a preset standard signal, but performs self-verification in conjunction with the same signal itself. Therefore, in order to adapt to the change of the input terminal of the main functional circuit 20, the signal acquisition module 50 adds an output terminal, and correspondingly, the diagnostic execution module 10 also adds a second input terminal and a second output terminal.

[0110] In this embodiment, the reconstructed signal includes a first reconstructed signal and a second reconstructed signal, respectively corresponding to the two analog front-ends 21. The diagnostic execution module 10 receives the signal to be processed from the signal acquisition module 50 through the first input terminal and the second input terminal, and provides the first reconstructed signal to one analog front-end 21 through the first output terminal, and provides the second reconstructed signal to the other analog front-end 21 through the second output terminal.

[0111] In the main functional circuit 20, the analog front-end 21 receiving the first recombined signal provides a first diagnostic signal to the analog-to-digital converter 22 connected to it, and the analog-to-digital converter 22 provides a second diagnostic signal to the digital processor 23; the analog front-end 21 receiving the second recombined signal provides a third diagnostic signal to the analog-to-digital converter 22 connected to it, and the analog-to-digital converter 22 provides a fourth diagnostic signal to the digital processor 23. After receiving the second and fourth diagnostic signals, the digital processor 23 performs digital signal processing and sends the processed signals as diagnostic output signals to the verification module 40. Therefore, the diagnostic output signals in this embodiment can be considered to include the processed second and fourth diagnostic signals. The verification module 40 compares the processed second and fourth diagnostic signals. If they are within the tolerance range, the signal chain diagnosis is considered successful, and the signal chain can function normally. If the difference between them is outside the tolerance range, it indicates a functional abnormality in the signal chain. Through the above-mentioned setup of multiple analog front-ends 21 and multiple analog-to-digital converters 22, the signal chain diagnostic system can perform self-verification based on the received signals.

[0112] In addition, for the main functional circuit 20 with multiple analog front-ends 21 and multiple analog-to-digital converters 22, there can be at least one set of analog front-ends 21 and analog-to-digital converters 22. The diagnostic signals processed by them, namely the first and second diagnostic signals or the third and fourth diagnostic signals in this embodiment, are sent to the verification module 40 for multi-node verification, which can also improve the reliability of fault detection and efficiently identify various failures in the signal chain circuit.

[0113] Another signal chain diagnostic system according to an embodiment of this application is as follows: Figure 5 As shown, the signal chain diagnostic system also includes:

[0114] The graphics generator 60 has an input terminal and an output terminal; wherein the input terminal receives a diagnostic trigger command and the output terminal provides a second preset standard signal;

[0115] The input terminal of the main function circuit 20 is coupled to the output terminal of the graphics generator 60 and receives the second preset standard signal.

[0116] In this embodiment, the signal chain diagnostic system includes a signal acquisition module 50, a graphics generator 60, a main functional circuit 20, a control module 30, and a verification module 40. The function and internal composition of each structure remain unchanged. The newly added graphics generator 60 and related changes will be described below; other structures and their unchanged functions will not be elaborated upon in this embodiment.

[0117] In one specific embodiment, the input of the graphics generator 60 can receive diagnostic trigger commands, and its output is coupled to the main function circuit 20, providing a second preset standard signal to the analog front-end 21 of the main function circuit 20. Additionally, please refer to... Figure 5 A switch is also provided between the signal acquisition module 50 and the graphics generator 60, so that the control module 30 can switch the working mode of the signal chain diagnostic system by controlling the graphics generator 60 and the closing of the switch. Specifically, when the diagnostic trigger command is in the first state, that is, when the signal chain diagnostic system is executing the diagnostic working mode, the switch is open, and the signal received by the main function circuit 20 is the second preset standard signal provided by the graphics generator 60; when the diagnostic trigger command is in the second state, that is, when the signal chain diagnostic system is executing the normal working mode, the switch is closed, and the signal received by the main function circuit 20 is the signal to be processed provided by the signal acquisition module 50, and the graphics generator 60 will not generate or provide the second preset standard signal to the main function circuit 20.

[0118] In this embodiment, when the diagnostic trigger command is in the first state, the output of the graphics generator 60 provides a second preset standard signal; the input of the analog front-end 21 receives the second preset standard signal, and the output of the analog front-end 21 provides a fifth diagnostic signal; the input of the analog-to-digital converter 22 receives the fifth diagnostic signal, and the output of the analog-to-digital converter 22 provides a sixth diagnostic signal; the input of the digital processor 23 receives the sixth diagnostic signal, and the output of the digital processor 23 provides a diagnostic output signal.

[0119] Specifically, the graphics generator 60 can generate a second preset standard signal in response to the diagnostic execution command corresponding to the first state issued by the control module 30. This second preset standard signal is then transmitted to the main functional circuit 20 to obtain a corresponding diagnostic output signal. The expected processing result corresponding to the second preset standard signal is used as a reference value and compared with the diagnostic output signal. If the expected processing result and the diagnostic output signal are within the tolerance range, the signal chain diagnosis is considered successful, and the system can perform its normal operation. If the difference between the two is not within the tolerance range, it indicates a functional abnormality in the signal chain. This signal chain diagnostic system, by processing the reference signal and judging the difference between the expected processing result and the diagnostic output signal, determines whether a functional abnormality exists. This ensures the controllability of the test signal, avoids misjudgments caused by input signal fluctuations, and standardizes and repeats the signal chain diagnostic method, ensuring the reliability of the diagnostic results.

[0120] In addition, in the main functional circuit 20, the analog front end 21 and the analog-to-digital converter 22 can also send the processed diagnostic signals, namely the fifth diagnostic signal and the sixth diagnostic signal in this embodiment, to the verification module 40 for multi-node verification, which can also improve the reliability of fault detection and efficiently identify various failures in the signal chain circuit.

[0121] Correspondingly, this application also discloses a signal chain diagnostic method, applied to the signal chain diagnostic system of any of the above embodiments, such as... Figure 6 As shown, a signal chain diagnostic method includes:

[0122] S101: Obtain the diagnostic trigger command and the raw signal; the raw signal includes at least one of the following: the signal to be diagnosed, the signal to be processed, and the second preset standard signal;

[0123] Specifically, when the diagnostic trigger command and the original signal are obtained, since the signal chain diagnostic system corresponds to two different working modes, it is necessary to first determine the working mode corresponding to the diagnostic trigger command.

[0124] S102: When the diagnostic trigger command is in the first state and the original signal is the signal to be diagnosed, the first reconstructed signal is obtained based on the signal to be diagnosed;

[0125] S103: Input the first recombination signal into the main function circuit to generate the first diagnostic output signal;

[0126] S104: Determine the signal verification result based on the first diagnostic output signal and the first preset standard signal.

[0127] Specifically, after determining the working mode and the specific signal, steps S102-S103 correspond to the first type in the preceding embodiments of this application, namely, the signal chain diagnostic system includes a signal acquisition module, a diagnostic execution module, a main functional circuit, a verification module and a control module, and the main functional circuit includes an analog front end, an analog-to-digital converter and a digital processor.

[0128] At this time, the signal chain diagnostic system executes the diagnostic working mode and, in conjunction with the first preset standard signal, performs a function test on the signal chain. The signal verification result can be determined based on whether the difference between the diagnostic output signal and the first preset standard signal is within the tolerance range. For example, if the difference is within the tolerance range, the signal verification result can be that the test passed and the function is normal; if the difference is not within the tolerance range, the signal verification result can be that the test failed and the function may be abnormal.

[0129] Another signal chain diagnostic method according to an embodiment of this application is as follows: Figure 7 As shown, the signal chain diagnostic method also includes:

[0130] S201: When the diagnostic trigger command is in the first state and the original signal is the signal to be diagnosed, the second reconstructed signal is obtained based on the signal to be diagnosed;

[0131] S202: Input the second recombination signal into the main function circuit to generate the second diagnostic output signal;

[0132] S203: Determine the signal verification result based on the first diagnostic output signal and the second diagnostic output signal.

[0133] Specifically, steps S201 to S203 correspond to the second type in the preceding embodiments of this application, namely, the signal chain diagnostic system includes a signal acquisition module, a diagnostic execution module, a main functional circuit, a verification module, and a control module, and the main functional circuit includes two analog front-ends, two analog-to-digital converters, and a digital processor. At this time, the signal chain diagnostic system executes the diagnostic working mode and performs self-verification based on the first and second reconstructed signals generated from the signal to be processed. The determination of the signal verification result will not be elaborated here.

[0134] Another signal chain diagnostic method according to an embodiment of this application is as follows: Figure 8 As shown, the signal chain diagnostic method also includes:

[0135] S301: When the diagnostic trigger command is in the first state and the original signal is the second preset standard signal, the second preset standard signal is input into the main function circuit to generate the third diagnostic output signal.

[0136] S302: Calculate the standard output signal based on the second preset standard signal;

[0137] S303: Determine the signal verification result based on the third diagnostic output signal and the standard output signal.

[0138] Specifically, steps S301 to S303 correspond to the third type in the preceding embodiments of this application, namely, the signal chain diagnostic system includes a signal acquisition module, a graphics generator, a main functional circuit, a verification module, and a control module, and the main functional circuit includes an analog front-end, an analog-to-digital converter, and a digital processor. At this time, the signal chain diagnostic system executes the diagnostic working mode and performs signal chain function detection based on the second preset standard signal. The determination of the signal verification result will not be elaborated here.

[0139] Another signal chain diagnostic method according to an embodiment of this application is as follows: Figure 9 As shown, the signal chain diagnostic method also includes:

[0140] S401: When the diagnostic trigger command is in the second state, the original signal is determined to be a signal to be processed;

[0141] S402: Input the signal to be processed into the main function circuit to obtain the processed output signal.

[0142] Specifically, steps S401 and S402 can correspond to any of the three architectures of the signal chain diagnostic system mentioned above. At this time, the signal chain diagnostic system executes the normal working mode, receives the signal to be processed, processes it through the main function circuit, and sends it as the output processing signal to the downstream receiving end.

[0143] For the first two types of signal chain diagnostic systems that include a diagnostic execution module, when the signal chain diagnostic system is in normal operating mode, the diagnostic execution module acts as a transmission bridge and does not perform signal reconstruction; instead, it transmits the received signal to the main functional circuit. For signal chain diagnostic systems that include a graphics generator but do not include a diagnostic execution module, when the signal chain diagnostic system is in normal operating mode, the switch between the signal acquisition module and the graphics generator is closed, and the graphics generator processes the inactive state.

[0144] By using the above signal chain diagnostic methods in conjunction with a signal chain diagnostic system, it is possible to reduce power consumption, improve diagnostic coverage, diagnostic efficiency, and diagnostic reliability while minimizing the increase in the system's internal footprint.

[0145] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0146] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0147] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0148] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent variations, or alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the market of the various embodiments, or to enable other persons skilled in the art to understand the various embodiments disclosed herein.

Claims

1. A signal chain diagnostic system, characterized in that, The system includes: The diagnostic execution module (10) has an input terminal, a first output terminal and a control terminal, wherein the input terminal receives the signal to be processed and the control terminal receives the diagnostic trigger command; The main functional circuit (20) has an input terminal and an output terminal, wherein the input terminal is coupled to the first output terminal of the diagnostic execution module (10), and the output terminal provides a diagnostic output signal; The control module (30) has a first output terminal and a second output terminal, wherein the first output terminal provides the diagnostic trigger command and the second output terminal provides the verification trigger command; The verification module (40) has a first input terminal and a second input terminal, wherein the first input terminal receives the verification trigger command and the second input terminal receives the diagnostic output signal; The diagnostic execution module (10) responds to the diagnostic trigger command by generating a first recombinant signal and / or a second recombinant signal based on the signal to be processed; or The diagnostic execution module (10) responds to the diagnostic trigger command and transmits the signal to be processed to the main functional circuit (20).

2. The signal chain diagnostic system according to claim 1, characterized in that, The control module (30) periodically generates the diagnostic trigger command and the verification trigger command.

3. The signal chain diagnostic system according to claim 1, characterized in that, The system also includes: The signal acquisition module (50) has an input terminal and an output terminal, wherein the input terminal receives the original signal and the output terminal provides the signal to be processed.

4. The signal chain diagnostic system according to claim 1, characterized in that, The main functional circuit (20) includes: The analog front end (21) has an input end and an output end; wherein the input end receives at least one of the first recombined signal, the second recombined signal or the signal to be processed, and the output end provides one of the first diagnostic signal, the third diagnostic signal or the first processing signal; An analog-to-digital converter (22) has an input terminal and an output terminal; wherein the input terminal receives one of the first diagnostic signal, the third diagnostic signal, or the first processed signal, and the output terminal provides one of the second diagnostic signal, the fourth diagnostic signal, or the second processed signal; The digital processor (23) has an input terminal and an output terminal; wherein the input terminal receives one of the second diagnostic signal, the fourth diagnostic signal or the second processing signal, and the output terminal provides one of the diagnostic output signal or the processing output signal.

5. A signal chain diagnostic system according to claim 4, characterized in that, When the diagnostic trigger instruction is in the first state, the first output terminal of the diagnostic execution module (10) provides a first reassembly signal; The input terminal of the analog front-end (21) receives the first recombination signal, and the output terminal of the analog front-end (21) provides a first diagnostic signal; The input terminal of the analog-to-digital converter (22) receives the first diagnostic signal, and the output terminal of the analog-to-digital converter (22) provides the second diagnostic signal; The digital processor (23) receives the second diagnostic signal at its input terminal and provides the diagnostic output signal at its output terminal. The verification module (40) responds to the verification trigger command, compares the diagnostic output signal with the first preset standard signal, and determines the diagnostic verification result based on the comparison result.

6. A signal chain diagnostic system according to claim 4, characterized in that, The number of the analog front-ends (21) is one or more. The number of analog-to-digital converters (22) is equal to the number of analog front-ends (21), and the analog-to-digital converters (22) correspond one-to-one with the analog front-ends (21).

7. A signal chain diagnostic system according to claim 6, characterized in that, When the number of analog front-ends (21) is two, the diagnostic execution module (10) also has a second output terminal, and the first output terminal and the second output terminal of the diagnostic execution module (10) are respectively coupled to the input terminals of the two analog front-ends (21); When the diagnostic trigger instruction is in the first state, the first output terminal of the diagnostic execution module (10) provides the first reconstruction signal, and the second output terminal of the diagnostic execution module (10) provides the second reconstruction signal; One of the two analog front-ends (21) receives the first reconstructed signal at its input terminal and provides the first diagnostic signal at its output terminal; the other of the two analog front-ends (21) receives the second reconstructed signal at its input terminal and provides a third diagnostic signal at its output terminal. One of the two analog-to-digital converters (22) receives the first diagnostic signal at its input and provides the second diagnostic signal at its output; the other of the two analog-to-digital converters (22) receives the third diagnostic signal at its input and provides the fourth diagnostic signal at its output. The digital processor (23) receives the second diagnostic signal and the fourth diagnostic signal at its input terminal and provides the diagnostic output signal at its output terminal.

8. A signal chain diagnostic system according to claim 4, characterized in that, The system also includes: The graphics generator (60) has an input terminal and an output terminal; wherein the input terminal receives the diagnostic trigger command and the output terminal provides a second preset standard signal; The input terminal of the main functional circuit (20) is coupled to the output terminal of the graphics generator (60) and receives the second preset standard signal.

9. A signal chain diagnostic system according to claim 8, characterized in that, When the diagnostic trigger command is in the first state, the output of the graphics generator (60) provides a second preset standard signal; The input terminal of the analog front-end (21) receives the second preset standard signal, and the output terminal of the analog front-end (21) provides a fifth diagnostic signal; The input terminal of the analog-to-digital converter (22) receives the fifth diagnostic signal, and the output terminal of the analog-to-digital converter (22) provides the sixth diagnostic signal; The digital processor (23) receives the sixth diagnostic signal at its input terminal and provides the diagnostic output signal at its output terminal.

10. A signal chain diagnostic system according to claim 4, characterized in that, When the diagnostic trigger command is in the second state, the first output terminal of the diagnostic execution module (10) provides the signal to be processed, and the input terminal of the main function circuit (20) receives the signal to be processed.

11. A signal chain diagnostic system according to claim 10, characterized in that, The input terminal of the analog front-end (21) receives the signal to be processed, and the output terminal provides a first processing signal; The analog-to-digital converter (22) receives the first processing signal at its input terminal and provides a second processing signal at its output terminal. The digital processor (23) receives the second processing signal at its input terminal and provides the processing output signal at its output terminal.

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