A commercial vehicle rear power unit testing system, method, apparatus, and storage medium

Abstract

The application provides a commercial vehicle rear power unit test system, method, equipment and storage medium. The system comprises a tested interface module; a power management module is used for providing adjustable power supply voltage to the rear power unit to be tested according to a test instruction and simulating power supply voltage fluctuation working conditions; a load simulation module is used for applying configurable loads to multiple output branches based on a preset power consumption scene, and the load states are combined controlled and dynamically adjusted during the test process; a fault injection module is used for transmitting a preset fault signal to at least one output branch or input interface under a preset timing condition; a data acquisition module is used for synchronously acquiring multiple electrical parameters of the rear power unit to be tested during the test process, and aligning the acquired data based on a unified timing; a control module is used for cooperatively controlling each module according to a preset test strategy, generating corresponding test working conditions, and feedback adjusting the test process based on the acquisition result.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics testing technology, and in particular to a testing system, method, equipment, and storage medium for the rear power unit of a commercial vehicle. Background Technology

[0002] In the current field of commercial vehicle power unit testing, various single-function test equipment are typically used to independently test power output, switching quantities, analog quantities, pulse signals, and CAN bus interfaces. These test systems mostly rely on manual configuration and item-by-item operation, lacking a unified test environment management and multi-interface coordination mechanism. This results in a complex and time-consuming testing process, and makes it difficult to detect potential interactions between different interfaces.

[0003] Furthermore, existing testing methods typically sample only a single interface or a single test condition, making it difficult to comprehensively evaluate the overall system performance under various operating conditions such as power fluctuations, load changes, and communication loads. They also fail to generate joint analysis results for each interface and struggle to effectively identify interface response anomalies, data interference, and communication errors, thus limiting the accuracy and reliability of the test results. Summary of the Invention

[0004] The purpose of this invention is to provide a testing system, method, equipment, and storage medium for the rear power unit of a commercial vehicle, so as to comprehensively collect and analyze the response status, signal output, and power supply environment parameters of each interface of the rear power unit under different power supply voltages, power loads, and communication conditions, and form a comprehensive performance evaluation result.

[0005] In a first aspect, the present invention provides a testing system for the rear power unit of a commercial vehicle, comprising: The interface module under test is used to establish a connection with the power interface, power output interface and communication interface of the power unit under test. The power management module is electrically connected to the interface module under test and is used to provide an adjustable power supply voltage to the power unit under test according to the test command and simulate the power supply voltage fluctuation condition. The load simulation module is electrically connected to the power output interface and is used to apply configurable loads to multiple output branches based on preset power consumption scenarios, and to perform combined control and dynamic adjustment of the state of each load during the test. The fault injection module is electrically connected to the interface module under test and is used to transmit a preset fault signal to at least one output branch or input interface under preset timing conditions in order to construct a fault condition with multiple branches coupled. The data acquisition module is connected to the power management module, the load simulation module and the fault injection module respectively. It is used to synchronously acquire multiple electrical parameters of the power unit under test during the test process and to align the acquired data based on a unified timing sequence. The control module is connected to the power management module, load simulation module, fault injection module and data acquisition module respectively. It is used to coordinate the control of each module according to the preset test strategy, generate corresponding test conditions, and adjust the test process based on the acquisition results, so as to realize the performance verification of the power unit under test under multiple load concurrency and fault coupling conditions.

[0006] Optionally, the fault injection module includes: The fault generation unit is used to generate fault signals of a preset type. A timing control unit, connected to the fault generation unit, is used to set the trigger time and duration of the fault signal for different target branches according to the preset test strategy. The channel selection unit is connected to the timing control unit and the interface module under test, respectively, and is used to selectively transmit the fault signal to the target output branch or input port under the control of the timing control unit.

[0007] Optionally, the load simulation module includes: The parameter configuration unit is used to acquire load parameter information corresponding to the target vehicle and output the corresponding load configuration data. A load generation unit, connected to the parameter configuration unit, is used to generate a load signal with corresponding electrical characteristics based on the load configuration data; The combined control unit is connected to the load generation unit and the interface module under test, respectively, and is used to combine and configure multiple load signals and distribute them to different output branches to form a multi-branch concurrent load application state. The dynamic adjustment unit, connected to the combined control unit, is used to perform timing control and state adjustment of the load signals of each output branch during the test, so as to realize dynamic switching and change of the load.

[0008] Optionally, the data acquisition module includes: The multi-channel acquisition unit is connected to the power management module, load simulation module and fault injection module respectively, and is used to acquire multiple electrical parameters in parallel; A clock synchronization unit, connected to the multi-channel acquisition unit, is used to provide a unified time reference to each acquisition channel in order to achieve synchronous triggering of multi-channel acquisition; The data alignment unit is connected to the multi-channel acquisition unit and the clock synchronization unit respectively, and is used to perform timing alignment processing on the acquired data of each channel based on the unified time reference. The event association unit, connected to the data alignment unit and the fault injection module, is used to establish the association between fault events and corresponding response data based on the fault injection timing, so as to realize the association analysis of dynamic response behavior during the test.

[0009] Optionally, the control module includes: The test strategy generation unit is used to generate test condition data, including power supply conditions, load combinations, and fault injection relationships, based on preset test rules. The operating condition scheduling unit is connected to the power management module, the load simulation module and the fault injection module respectively, and is used to coordinate the operation status and execution sequence of each unit according to the test operating condition data. An execution control unit, connected to the working condition scheduling unit, is used to issue control commands to each unit according to the execution sequence to drive each unit to perform corresponding test operations; The result determination unit is connected to the data acquisition module and is used to analyze the acquired multi-channel test data and output the test results based on preset determination rules.

[0010] Optionally, the control module further includes: The feedback adjustment unit, connected to the result determination unit and the test strategy generation unit, is used to adjust the test condition data according to the determination result when the test result does not meet the preset conditions. The execution control unit is also connected to the feedback adjustment unit, and is used to re-trigger the corresponding test process of each unit according to the adjusted test conditions, so as to form a closed-loop control between test execution and result judgment.

[0011] Optionally, the control module is also used to perform unified timing coordination control on the power management module, load simulation module and fault injection module within the same test cycle, so that the power supply voltage change, load state change and fault injection process are executed synchronously or sequentially according to the preset correlation relationship, so as to construct a comprehensive test scenario with multiple working conditions coupled.

[0012] Secondly, the present invention provides a method for testing the rear power unit of a commercial vehicle based on the above-mentioned testing system, comprising: Obtain the preset test strategy and generate test condition data that includes power supply conditions, load combinations and fault injection relationships; Based on the test condition data, the power management module, load simulation module and fault injection module execute corresponding test operations according to a preset timing sequence to construct a test scenario with multiple concurrent loads and fault coupling. During the test, multiple electrical parameters were synchronously acquired through the data acquisition module, and the acquired data was time-aligned. The correlation between fault events and response data is established based on the aligned data, and the test results are judged. If the test results do not meet the preset conditions, the test condition data will be adjusted and the test operation will be re-executed.

[0013] Thirdly, the present invention provides a test device for the rear power unit of a commercial vehicle, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; The memory is used to store at least one executable instruction that causes the processor to perform operations corresponding to the above-described commercial vehicle rear power unit testing method.

[0014] Fourthly, the present invention provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, performs the steps of the aforementioned commercial vehicle rear power unit testing method.

[0015] According to the present invention, through the coordinated operation of the power management module, load simulation module, fault injection module, data acquisition module, and control module, a comprehensive test environment with multiple concurrent loads and fault coupling can be constructed under off-vehicle conditions. Specifically, by controlling the simulation of power supply voltage fluctuations, applying multiple loads in combination, and injecting fault signals in a timely manner, unified driving and synchronous testing of the downstream power unit's operating status under complex power conditions is achieved. Simultaneously, by leveraging the data acquisition module to synchronously acquire and uniformly process multiple electrical parameters, and combining this with the overall scheduling and feedback adjustment of the control module, the testing process is transformed from traditional single-point static verification to multi-factor collaborative dynamic performance verification. This significantly improves the realism and completeness of the test scenario and enhances the ability to evaluate the comprehensive performance of the downstream power unit.

[0016] Furthermore, by refining the fault injection, load simulation, data acquisition, and control scheduling mechanisms, the system achieves time-sequential control and coupled injection of multi-branch faults, parameterized modeling and dynamic combination of multi-loads, synchronous acquisition and timing alignment of multi-channel data, and a closed-loop adjustment process driven by test results. Under a unified testing strategy, the various functional modules form an orderly collaborative system, ensuring that power supply changes, load changes, and fault injection are executed synchronously or sequentially according to preset relationships within the same test cycle. Event correlation analysis enables a detailed characterization of the dynamic response process. This not only allows for the stable reproduction of complex power consumption scenarios and extreme operating conditions but also enables repeatable and quantifiable comprehensive verification of the dynamic response capability, protection performance, and system-level adaptability of downstream power units, significantly improving test depth, data reliability, and the engineering application value of the verification results.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below. Attached Figure Description

[0018] Figure 1 A structural block diagram of a commercial vehicle rear power unit testing system according to an embodiment of the present invention is shown; Figure 2 A structural block diagram of a fault injection module according to an embodiment of the present invention is shown; Figure 3 A structural block diagram of a load simulation module according to an embodiment of the present invention is shown; Figure 4 A structural block diagram of a data acquisition module according to an embodiment of the present invention is shown; Figure 5 A structural block diagram of a control module according to an embodiment of the present invention is shown; Figure 6 A schematic flowchart of a test method for a commercial vehicle rear power unit according to an embodiment of the present invention is shown; Figure 7 A structural block diagram of a commercial vehicle rear power unit testing device according to an embodiment of the present invention is shown. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and not for limiting the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0020] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Figure 1 A structural block diagram of a commercial vehicle rear power unit testing system according to an embodiment of the present invention is shown. Figure 1 As shown, the commercial vehicle rear power unit test system includes a test interface module, a power management module, a load simulation module, a fault injection module, a data acquisition module, and a control module. The test interface module establishes connections with the power interface, power output interface, and communication interface of the rear power unit under test. The power management module is electrically connected to the test interface module and provides an adjustable supply voltage to the rear power unit under test according to test commands, simulating power supply voltage fluctuations. The load simulation module is electrically connected to the power output interface and applies configurable loads to multiple output branches based on preset power consumption scenarios, and performs combined control and dynamic adjustment of each load state during the test. The fault injection module is electrically connected to the test interface module and transmits preset fault signals to at least one output branch or input interface under preset timing conditions to construct a multi-branch coupled fault condition. The data acquisition module is connected to the power management module, load simulation module, and fault injection module respectively, and synchronously acquires multiple electrical parameters of the rear power unit under test during the test process, and aligns the acquired data based on a unified timing sequence. The control module is connected to the power management module, load simulation module, fault injection module and data acquisition module respectively. It is used to coordinate the control of each module according to the preset test strategy, generate corresponding test conditions, and adjust the test process based on the acquisition results, so as to realize the performance verification of the power unit under test under multiple load concurrency and fault coupling conditions.

[0023] In this embodiment, all modules form an integrated collaborative working mechanism driven by a unified testing strategy. The control module, as the core scheduling unit, performs unified timing orchestration of power supply control, load application, and fault injection processes, enabling different types of test factors to act synchronously or sequentially on the power unit under test within the same test cycle according to preset relationships. Simultaneously, the data acquisition module continuously acquires the electrical responses generated at each stage and, combined with timing alignment processing, forms a set of test data with corresponding relationships, thereby constructing a complete test link at the system level encompassing condition application, response acquisition, and result feedback. Based on the above structure and operation mode, this embodiment not only overcomes the limitations of traditional single-condition testing, achieving unified verification under conditions of multi-load concurrency and fault coupling, but also, through timing-correlated data analysis, finely characterizes the dynamic response process of the power unit, thereby improving the completeness, repeatability, and engineering guidance value of the test results.

[0024] According to the above embodiments, through the coordinated operation of the power management module, load simulation module, fault injection module, data acquisition module, and control module, a comprehensive test environment with multiple concurrent loads and fault coupling can be constructed under off-vehicle conditions. Specifically, by controlling the simulation of power supply voltage fluctuations, applying multiple loads in combination, and injecting fault signals in a timely manner, unified driving and synchronous testing of the downstream power unit's operating status under complex power conditions is achieved. Simultaneously, by leveraging the data acquisition module to synchronously acquire and uniformly process multiple electrical parameters, and combining this with the overall scheduling and feedback adjustment of the control module, the testing process is transformed from traditional single-point static verification to multi-factor collaborative dynamic performance verification. This significantly improves the realism and completeness of the test scenario and enhances the ability to evaluate the comprehensive performance of the downstream power unit.

[0025] Figure 2 A structural block diagram of a fault injection module according to an embodiment of the present invention is shown. Figure 2 As shown, the fault injection module includes a fault generation unit, a timing control unit, and a channel selection unit. The fault generation unit generates fault signals of a preset type. The timing control unit, connected to the fault generation unit, sets the trigger time and duration of fault signals for different target branches according to a preset test strategy. The channel selection unit is connected to both the timing control unit and the interface module under test, selectively transmitting fault signals to target output branches or input ports under the control of the timing control unit.

[0026] In this embodiment, the fault injection module is responsible for constructing and scheduling abnormal operating conditions within the overall test system. By layering fault generation, timing control, and channel selection, it decouples and coordinates the formation, triggering, and action paths of fault signals under a unified control logic. The various units are sequentially connected according to the test strategy, ensuring that the fault injection process not only has clear time constraints but also allows for selective configuration for different branches, thus forming a targeted fault application mechanism at the system level. Based on this structure, the order and scope of fault triggering can be finely controlled in multi-branch environments, transforming the test process from simple fault application into a schedulable and composable dynamic injection process, thereby improving the ability to construct complex coupled fault scenarios and the accuracy of verification.

[0027] Figure 3 A structural block diagram of a load simulation module according to an embodiment of the present invention is shown. Figure 3 As shown, the load simulation module includes a parameter configuration unit, a load generation unit, a combined control unit, and a dynamic adjustment unit. The parameter configuration unit acquires load parameter information corresponding to the target vehicle and outputs corresponding load configuration data. The load generation unit, connected to the parameter configuration unit, generates load signals with corresponding electrical characteristics based on the load configuration data. The combined control unit is connected to both the load generation unit and the interface module under test, and is used to combine and configure multiple load signals and distribute them to different output branches to form a multi-branch concurrent load application state. The dynamic adjustment unit, connected to the combined control unit, performs timing control and state adjustment of the load signals of each output branch during the test to achieve dynamic switching and changes in the load.

[0028] In this embodiment, the load simulation module constructs a hierarchical implementation path from parameter-driven to load output, based on the restoration of the vehicle's electrical characteristics. By extracting and configuring the actual load parameters of the vehicle, a clear data foundation is provided for the subsequent load generation and application processes. On this basis, each unit forms a closed-loop association according to the sequence of parameter mapping, load construction, combination allocation, and dynamic adjustment. This allows different types of loads to not only be generated on demand but also to be collaboratively configured according to preset relationships in a multi-branch environment, and to be orderly switched and adjusted over time during testing. Based on this structure and operating mode, the load simulation process is transformed from a traditional single static loading to a multi-load coupled modeling process oriented towards the vehicle's operating conditions. This enables a more realistic reproduction of the concurrent and dynamically changing electrical behavior of multiple devices, improves the verification capability of the response characteristics of the downstream power units under complex load conditions, and provides a consistent and repeatable test foundation for subsequent data analysis and performance evaluation.

[0029] Figure 4A structural block diagram of a data acquisition module according to an embodiment of the present invention is shown. Figure 4 As shown, the data acquisition module includes a multi-channel acquisition unit, a clock synchronization unit, a data alignment unit, and an event correlation unit. The multi-channel acquisition unit is connected to the power management module, load simulation module, and fault injection module, respectively, for parallel acquisition of multiple electrical parameters. The clock synchronization unit is connected to the multi-channel acquisition unit and provides a unified time reference to each acquisition channel to achieve synchronous triggering of multi-channel acquisition. The data alignment unit is connected to both the multi-channel acquisition unit and the clock synchronization unit, and performs timing alignment processing on the acquired data from each channel based on the unified time reference. The event correlation unit is connected to both the data alignment unit and the fault injection module, and establishes the correlation between fault events and corresponding response data based on the fault injection timing sequence to achieve correlation analysis of dynamic response behavior during testing.

[0030] In this embodiment, the data acquisition module, focusing on the unified acquisition and processing requirements of multi-source signals during testing, constructs a hierarchical processing structure consisting of signal acquisition, time base unification, data processing, and event correlation. Specifically, by synchronously accessing multiple electrical signals from power supply control, load changes, and fault injection processes, and coordinating triggering under a unified time base, the comparability of various data types is ensured from the acquisition stage. Subsequently, data alignment processing enables data from different channels to be mapped to each other on the same time axis. Simultaneously, by incorporating fault injection timing into the data processing, the acquired data not only reflects instantaneous numerical changes but also demonstrates the correspondence with external test events, thus forming a time-based data organization at the system level. Based on this structure and operating mechanism, test data is transformed from traditional discrete records into a structured dataset with temporal consistency and event correlation. This not only supports synchronous analysis of concurrent and dynamic changes across multiple branches but also improves the traceability and analytical accuracy of fault response processes, providing reliable data support for subsequent performance evaluation and problem localization.

[0031] Figure 5 A structural block diagram of a control module according to an embodiment of the present invention is shown. Figure 5As shown, the control module includes a test strategy generation unit, a working condition scheduling unit, an execution control unit, and a result determination unit. The test strategy generation unit generates test condition data based on preset test rules, including power supply conditions, load combinations, and fault injection relationships. The working condition scheduling unit is connected to the power management module, load simulation module, and fault injection module, respectively, and coordinates the operation status and execution sequence of each unit according to the test condition data. The execution control unit is connected to the working condition scheduling unit and issues control commands to each unit according to the execution sequence to drive each unit to perform corresponding test operations. The result determination unit is connected to the data acquisition module and analyzes the acquired multi-channel test data, outputting test results based on preset determination rules.

[0032] In this embodiment, the control module constructs a closed-loop control architecture from strategy-driven to result output around the organization and execution of the testing process. Each unit is sequentially connected according to the order of strategy generation, condition decomposition, instruction execution, and result judgment. Specifically, by structuring the test rules and generating corresponding condition data, power supply changes, load combinations, and fault relationships are uniformly described within the same data framework. Based on this, the condition scheduling process further transforms the aforementioned condition data into executable timing control information and arranges the action sequence and collaborative relationships of each functional module. During execution, each control instruction acts on the corresponding module according to a predetermined timing sequence, thereby driving the gradual construction of the test scenario. After the test is completed, by performing rule-based analysis on the collected data, the test response is compared with preset standards to form a judgment result. Based on this structure and operation mode, the testing process is transformed from the original manual organization to a strategy-driven automated execution process. Through a unified condition description and scheduling mechanism, collaborative operation between multiple modules is achieved, thereby improving the consistency and repeatability of the testing process and providing a stable control foundation for system-level performance evaluation under complex conditions.

[0033] In one embodiment, reference Figure 5 The control module also includes a feedback adjustment unit. This unit is connected to the result determination unit and the test strategy generation unit, and is used to adjust the test condition data based on the determination results when the test results do not meet preset conditions. The execution control unit is also connected to the feedback adjustment unit, and is used to re-trigger the corresponding test processes of each unit based on the adjusted test conditions, thus forming a closed-loop control between test execution and result determination.

[0034] In this embodiment, the feedback adjustment unit constitutes a closed-loop control mechanism for the control module, and its workflow closely collaborates with the aforementioned test strategy generation unit, operating condition scheduling unit, execution control unit, and result judgment unit. Specifically, when the multi-channel test data obtained by the result judgment unit during the test fails to meet the preset judgment conditions, the feedback adjustment unit corrects the original test operating condition data based on the judgment result, including adjusting the parameters and execution timing of power supply control, load combination, and fault injection. Subsequently, the execution control unit reissues control commands to each functional module according to the adjusted operating condition data, causing each unit to re-execute the corresponding test operation. Through this closed-loop adjustment mechanism, this embodiment can dynamically optimize the test operating conditions within the same test cycle, achieving continuous feedback and iterative adjustment between test execution and result judgment, thereby ensuring test accuracy and reliability under conditions of multi-load concurrency and fault coupling. At the same time, this structure, through unified data flow and control logic, realizes real-time optimization of the test strategy, improves the adaptability of the test system and the verification capability under complex operating conditions, and provides an efficient, repeatable, and adjustable testing method for the performance evaluation of the subsequent power unit.

[0035] In one embodiment, the control module is also used to perform unified timing coordination control on the power management module, load simulation module and fault injection module within the same test cycle, so that the power supply voltage change, load state change and fault injection process are executed synchronously or sequentially according to the preset correlation relationship, so as to construct a comprehensive test scenario with multiple operating conditions coupled.

[0036] In this embodiment, the control module coordinates the timing relationships of various functional units to achieve unified scheduling and synchronous execution of the power management module, load simulation module, and fault injection module. Specifically, the control module generates a multi-condition coupled execution scheme based on a preset test strategy, and uses condition scheduling logic to send power supply voltage changes, load state changes, and fault injection processes to each functional unit in a predetermined order or synchronously. Simultaneously, it monitors and corrects the execution status of each unit to ensure that each unit accurately executes test operations according to their associated relationships. Through this unified timing coordination control, this embodiment can completely simulate complex operating scenarios of multiple concurrent loads and fault coupling within a single test cycle, achieving repeatability and controllability of test conditions, and providing accurate multi-condition verification capabilities. This significantly improves the performance evaluation accuracy and system reliability of the power unit under complex operating conditions, while also providing data support and feedback for further optimization of test strategies.

[0037] According to the above embodiments, by further refining the fault injection, load simulation, data acquisition, and control scheduling mechanisms, the system achieves time-sequential control and coupled injection of multi-branch faults, parameterized modeling and dynamic combination of multi-loads, synchronous acquisition and timing alignment of multi-channel data, and a closed-loop adjustment process driven by test results. Under a unified testing strategy, the various functional modules form an orderly collaboration, ensuring that power supply changes, load changes, and fault injection are executed synchronously or sequentially according to preset relationships within the same test cycle. Furthermore, event correlation analysis enables a detailed characterization of the dynamic response process. Therefore, it not only stably reproduces complex power consumption scenarios and extreme operating conditions but also provides repeatable and quantifiable comprehensive verification of the dynamic response capability, protection performance, and system-level adaptability of downstream power units, thereby significantly improving test depth, data reliability, and the engineering application value of the verification results.

[0038] Figure 6 A schematic flowchart of a testing method for the rear power unit of a commercial vehicle according to an embodiment of the present invention is shown. Figure 6 As shown, the test method for the rear power unit of a commercial vehicle includes the following steps: Step S100: Obtain the preset test strategy and generate test condition data including power supply conditions, load combinations and fault injection relationships.

[0039] Step S200: Based on the test condition data, control the power management module, load simulation module and fault injection module to perform corresponding test operations according to the preset timing sequence, so as to construct a test scenario of multiple load concurrency and fault coupling.

[0040] In step S300, during the test, multiple electrical parameters are synchronously acquired through the data acquisition module, and the acquired data is time-aligned.

[0041] Step S400: Establish the correlation between fault events and response data based on the aligned data, and determine the test results.

[0042] In step S500, if the test results do not meet the preset conditions, the test condition data is adjusted and the test operation is re-executed.

[0043] The specific implementation methods for each step in the above-mentioned commercial vehicle rear power unit testing method refer to the relevant content of the embodiments in the above system, and will not be repeated here.

[0044] This invention also provides a commercial vehicle rear power unit testing device, comprising: a processor 201, a memory 202, and a computer program stored in the memory 202 and configured to be executed by the processor 201. When the processor 201 executes the computer program, it implements the commercial vehicle rear power unit testing method as described in any of the above embodiments.

[0045] When processor 201 executes a computer program, it implements the steps in the above-described embodiment of the commercial vehicle rear power unit testing method, for example... Figure 6 All steps of the commercial vehicle rear power unit test method shown. Alternatively, when processor 201 executes a computer program, it implements the functions of each module / unit in the above-described commercial vehicle rear power unit test system, for example... Figure 1 The functions of each module in the commercial vehicle rear power unit test system are shown.

[0046] For example, a computer program may be divided into one or more modules, one or more of which are stored in memory 202 and executed by processor 201 to perform the present invention. One or more modules may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in a commercial vehicle power unit testing system.

[0047] The processor 201 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. Processor 201 is the control center of the commercial vehicle rear power unit testing system, connecting various parts of the system via various interfaces and lines.

[0048] The memory 202 can be used to store computer programs and / or modules. The processor 201 implements various functions of the commercial vehicle power unit testing system by running or executing the computer programs and / or modules stored in the memory 202 and calling the data stored in the memory 202. The memory 202 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function, etc.; the data storage area may store data created based on the use of the commercial vehicle power unit testing system, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0049] In this invention, if the modules / units of the commercial vehicle rear power unit testing system are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0050] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A testing system for the rear power unit of a commercial vehicle, characterized in that, include: The interface module under test is used to establish a connection with the power interface, power output interface and communication interface of the power unit under test. The power management module is electrically connected to the interface module under test and is used to provide an adjustable power supply voltage to the power unit under test according to the test command and simulate the power supply voltage fluctuation condition. The load simulation module is electrically connected to the power output interface and is used to apply configurable loads to multiple output branches based on preset power consumption scenarios, and to perform combined control and dynamic adjustment of the state of each load during the test. The fault injection module is electrically connected to the interface module under test and is used to transmit a preset fault signal to at least one output branch or input interface under preset timing conditions in order to construct a fault condition with multiple branches coupled. The data acquisition module is connected to the power management module, the load simulation module and the fault injection module respectively. It is used to synchronously acquire multiple electrical parameters of the power unit under test during the test process and to align the acquired data based on a unified timing sequence. The control module is connected to the power management module, load simulation module, fault injection module and data acquisition module respectively. It is used to coordinate the control of each module according to the preset test strategy, generate corresponding test conditions, and adjust the test process based on the acquisition results, so as to realize the performance verification of the power unit under test under multiple load concurrency and fault coupling conditions.

2. The commercial vehicle rear power unit testing system according to claim 1, characterized in that, The fault injection module includes: The fault generation unit is used to generate fault signals of a preset type. A timing control unit, connected to the fault generation unit, is used to set the trigger time and duration of the fault signal for different target branches according to the preset test strategy. The channel selection unit is connected to the timing control unit and the interface module under test, respectively, and is used to selectively transmit the fault signal to the target output branch or input port under the control of the timing control unit.

3. The commercial vehicle rear power unit testing system according to claim 2, characterized in that, The load simulation module includes: The parameter configuration unit is used to acquire load parameter information corresponding to the target vehicle and output the corresponding load configuration data. A load generation unit, connected to the parameter configuration unit, is used to generate a load signal with corresponding electrical characteristics based on the load configuration data; The combined control unit is connected to the load generation unit and the interface module under test, respectively, and is used to combine and configure multiple load signals and distribute them to different output branches to form a multi-branch concurrent load application state. The dynamic adjustment unit, connected to the combined control unit, is used to perform timing control and state adjustment of the load signals of each output branch during the test, so as to realize dynamic switching and change of the load.

4. The commercial vehicle rear power unit testing system according to claim 3, characterized in that, The data acquisition module includes: The multi-channel acquisition unit is connected to the power management module, load simulation module and fault injection module respectively, and is used to acquire multiple electrical parameters in parallel; A clock synchronization unit, connected to the multi-channel acquisition unit, is used to provide a unified time reference to each acquisition channel in order to achieve synchronous triggering of multi-channel acquisition; The data alignment unit is connected to the multi-channel acquisition unit and the clock synchronization unit respectively, and is used to perform timing alignment processing on the acquired data of each channel based on the unified time reference. The event association unit, connected to the data alignment unit and the fault injection module, is used to establish the association between fault events and corresponding response data based on the fault injection timing, so as to realize the association analysis of dynamic response behavior during the test.

5. The commercial vehicle rear power unit testing system according to claim 4, characterized in that, The control module includes: The test strategy generation unit is used to generate test condition data, including power supply conditions, load combinations, and fault injection relationships, based on preset test rules. The operating condition scheduling unit is connected to the power management module, the load simulation module and the fault injection module respectively, and is used to coordinate the operation status and execution sequence of each unit according to the test operating condition data. An execution control unit, connected to the working condition scheduling unit, is used to issue control commands to each unit according to the execution sequence to drive each unit to perform corresponding test operations; The result determination unit is connected to the data acquisition module and is used to analyze the acquired multi-channel test data and output the test results based on preset determination rules.

6. The commercial vehicle rear power unit testing system according to claim 5, characterized in that, The control module also includes: The feedback adjustment unit, connected to the result determination unit and the test strategy generation unit, is used to adjust the test condition data according to the determination result when the test result does not meet the preset conditions. The execution control unit is also connected to the feedback adjustment unit, and is used to re-trigger the corresponding test process of each unit according to the adjusted test conditions, so as to form a closed-loop control between test execution and result judgment.

7. The commercial vehicle rear power unit testing system according to any one of claims 1-6, characterized in that, The control module is also used to perform unified timing coordination control on the power management module, load simulation module and fault injection module within the same test cycle, so that the power supply voltage change, load state change and fault injection process are executed synchronously or sequentially according to the preset correlation relationship, so as to construct a comprehensive test scenario with multiple working conditions coupled.

8. A method for testing the rear power unit of a commercial vehicle based on the test system described in any one of claims 1-7, characterized in that, include: Obtain the preset test strategy and generate test condition data that includes power supply conditions, load combinations and fault injection relationships; Based on the test condition data, the power management module, load simulation module and fault injection module execute corresponding test operations according to a preset timing sequence to construct a test scenario with multiple concurrent loads and fault coupling. During the test, multiple electrical parameters were synchronously acquired through the data acquisition module, and the acquired data was time-aligned. The correlation between fault events and response data is established based on the aligned data, and the test results are judged. If the test results do not meet the preset conditions, the test condition data will be adjusted and the test operation will be re-executed.

9. A testing device for the rear power unit of a commercial vehicle, characterized in that, include: The processor, memory, communication interface, and communication bus are provided, wherein the processor, memory, and communication interface communicate with each other via the communication bus. The memory is used to store at least one executable instruction, which causes the processor to perform the operation corresponding to the commercial vehicle rear power unit testing method as described in claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the commercial vehicle rear power unit testing method according to claim 8.

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