Introduction to Automotive Industry Test Software Project (On-board ECU Comprehensive Test Software) – Industrial Category
Release Date: September 21, 2022
This product is a professional comprehensive testing tool specifically designed for automotive ECU development and mass production. It is the preferred solution for testing powertrain ECUs, body ECUs, and chassis ECUs. It can highly simulate vehicle operation, bus communication, and various fault scenarios, thoroughly verifying ECU functional integrity and communication stability. It strictly complies with the ISO 26262 functional safety standard, providing one‑stop powerful support for automotive electronics R&D iteration and reliable operation. The software is built on the CAN/LIN/Ethernet vehicle bus architecture and features seven core functional modules with clear division of labor and efficient collaboration, covering the entire process from unit testing and integration testing to system testing. It is a professional tool for automotive electronics testing.
1. Overall Software Architecture and Module Interconnection Relationships
The software uses the ECU test master control module as the central control center, which uniformly schedules the bus simulation, operating condition simulation, fault injection, data acquisition and analysis, diagnostic testing, and test report generation modules. Each module communicates bidirectionally through standard bus interfaces and cooperates on demand, forming a closed‑loop testing process of “Scheduling → Simulation → Acquisition → Analysis”. This meets the high‑precision and high‑reliability testing requirements of automotive electronics, ensuring a standardized process throughout and accurate data.
Core Collaboration Logic
The master control module uniformly issues commands, assigns tasks, and aggregates results; the bus/operating condition/fault modules simulate real scenarios and anomalies; the data module collects and analyzes ECU feedback in real time; the diagnostic module verifies ECU diagnostic functions; the report module automatically outputs standard test reports.
The automotive ECU comprehensive test software adopts a modular design and development approach, leveraging multi-threaded programming technology to implement various functions, ensuring real-time performance and stability of system operation. The overall software architecture is shown in the figure, and the specific functions of each module will be explained one by one in the following sections.
Note: In the flowchart, Module 1 is the core scheduling hub, responsible for coordinating all test processes, receiving feedback from each module, and issuing commands; Modules 2 to 6 are core function execution modules, which directly exchange data with the ECU under test to perform functions such as scenario simulation, fault injection, data acquisition, and diagnostic testing; Module 7 is the result output module, which generates standardized test reports based on the processing results from Module 1; The ECU under test is the test object, forming bidirectional data interaction with each functional module to ensure the authenticity of test scenarios and the reliability of test results.
2. Independent Functions of Each Module
· ECU Test Master Control Module (Central Control Center): Receives test parameters, generates test procedures, uniformly schedules each module; aggregates data, evaluates results, controls test start/stop, is compatible with multiple ECUs, and complies with functional safety testing requirements.
· Bus Simulation Module (Simulates In-Vehicle Network): Simulates in-vehicle bus communication such as CAN, LIN, and Ethernet, sends and receives vehicle messages, monitors bus status; supports multiple protocols and custom configurations, ensuring reliable testing of ECU networking functions.
· Operating Condition Simulation Module (Simulates Driving Scenarios): Built-in standard driving conditions such as idle, acceleration, braking, and hill climbing, with customizable parameters; sends real signals such as engine speed, vehicle speed, and braking to the ECU, restoring the actual driving environment.
· Fault Injection Module (Creates Abnormal Scenarios):Simulates common faults such as sensor, actuator, and bus faults; supports single-point/multi-point faults and timed/quantitative injection; strictly complies with ISO 26262 fault testing requirements to verify ECU fault tolerance and diagnostic capabilities.
· Data Acquisition and Analysis Module (Data Analyst):Real-time acquisition of ECU operation, bus, operating condition, and fault data; automatic parsing, filtering, and comparison of metrics, providing evaluation results such as response speed and control accuracy, with support for data playback and traceability.
· Diagnostic Test Module (ECU Health Checker): Based on standard protocols such as UDS, reads/clears fault codes, queries ECU version, and tests diagnostic communication; verifies whether the ECU diagnostic functions are complete and accurate, and is compatible with automotive manufacturer specifications.
· Test Report Generation Module (Automatic Report Generation): One-click generation of standard reports in PDF/Excel/Word formats, including test information, data, conclusions, and anomaly points; complies with ISO 26262 audit requirements and can be directly used for acceptance and factory testing.
3. Core Value of the Software
This ECU comprehensive test software meets the R&D and mass production needs of automotive manufacturers, integrating the capabilities of professional testing tools. It features precise scenario simulation, standardized test procedures, and traceable results. Compatible with multiple ECU models and covering all test phases, it significantly improves test efficiency, reduces costs, and minimizes shipment risks, providing solid testing support for the safe, intelligent, and electrified development of automotive electronics.
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