Simulated ignition testing method for vehicle

Abstract

The invention provides a simulated ignition testing method for a vehicle. The method comprises a method for forming a simulated vehicle start ignition waveform and a method for testing a to-be-testedsystem by using the simulated vehicle start ignition waveform, wherein the method for forming the simulated vehicle start ignition waveform specifically comprises the steps of selecting preset waveform data from an ignition waveform database and carrying out parameter fitting on the waveform data according to the testing requirements, outputting a signal to a signal collector for signal collectionand then converting the signal into a simulating signal; and amplifying the simulating signal and then restoring into an original ignition waveform signal; and the method for testing the to-be-testedsystem by using the simulated vehicle start ignition waveform comprises the steps of outputting a vehicle ignition waveform signal generated through simulation to the to-be-tested system for startupand operation; and judging whether the to-be-tested system normally operates or not under the given ignition waveform signal through monitoring equipment and feeding back the operation result to a test and analysis module. Through the simulated ignition method provided by the invention, the to-be-tested system related to a vehicle ignition system can be tested and a fault can be cleared in the development process, so that the development cost is reduced and the development cycle is shortened.

Description

technical field [0001] The invention belongs to the field of automotive electronics, in particular to a method for simulating an ignition test of an automobile. Background technique [0002] With the popularization of automobiles, more and more automobiles have entered thousands of households. Now the rapid development of information technology has made people put forward higher requirements for intelligent automobiles. It is hoped that intelligent automobiles can bring convenience to people's practicality. An intelligent vehicle is a comprehensive system that integrates functions such as environmental perception, planning and decision-making, and multi-level assisted driving. It uses technologies such as computers, modern sensing, information fusion, communication, artificial intelligence, and automatic control. technology complex. At present, the research on intelligent vehicles is mainly devoted to improving the safety and comfort of automobiles, and providing an excelle...

AI Technical Summary

Problems solved by technology

The development of smart cars puts forward strict requirements on all aspects of the body control system, including software and hardware. Therefore, the reliability of the developed nodes must be ensured in the development of automotive systems. In addition to conventional functions, the stability of the electronic unit nodes when the engine starts and ignites More importantly, if the stability is poor, because the ignition voltage fluctuations lead to failure, it will cause the electronic unit node to function abnormally during use, thereby affecting safety and function

At the same time, due to differences in engine models and user habits, the ignition voltage fluctuations during the engine start-up process will have various dynamic changes. Therefore, the traditional test for ignition pressure is to use the corresponding engine and use manual or mechanical arms to simulate rotating the ignition button. Then monitor the operating status of the electronic unit manually or through some acquisition equipment, so as to determine the stability of the electronic unit under different ignition waveforms. On the one hand, this test method requires a corresponding engine, so it is necessary to develop a project every time. It is very inflexible to coordinate the actual vehicle with the OEM, especially when there are multiple projects, it is necessary to coordinate multiple vehicles. Since the ignition waveform in the engine process is difficult to monitor, it is necessary to first locate the engine or the electronics when a problem occurs. The unit problem, secondly, if manual testing is used, a lot of human resources will be wasted, and the tedious and continuous testing process will be repeated, while the current price of the robotic arm is relatively high, and there are relatively high technical thresholds. At the same time, the installation on the vehicle is also problem, will bring more limitations to the whole project

At the same time, after a problem occurs, since the entire testing process cannot be monitored in real time, it is difficult to reproduce the fault condition, which will hinder and trouble subsequent software or hardware problem repairs.

[0003] In order to ensure the test quality of the product and prevent customer returns or major product defects caused by ignition problems in actual vehicle use, it is necessary to develop a simulated ignition device and a method for testing the system under test under this ignition condition

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