Solutions for acceleration measurement in vehicle crash tests

[摘要] Crash tests are useful for validating computer simulations of road traffic accidents. One of the most important parameters measured is the acceleration. The evolution of acceleration versus time, during a crash test, form a crash pulse. The correctness of the crash pulse determination depends on the data acquisition system used. Recommendations regarding the instrumentation for impact tests are given in standards, which are focused on the use of accelerometers as impact sensors. The goal of this paper is to present the device and software developed by authors for data acquisition and processing. The system includes two accelerometers with different input ranges, a processing unit based on a 32-bit microcontroller and a data logging unit with SD card. Data collected on card, as text files, is processed with a dedicated software running on personal computers. The processing is based on diagrams and includes the digital filters recommended in standards.

[发布机构] Department of Automotive and Transport Engineering, Transilvania University of Brasov, Romania^1

[效力级别] 运输工程 [学科分类] 工业工程学

[关键词] Crash pulse;Crash tests;Data acquisition system;Data logging;Impact sensors;Processing units;Road traffic accidents;Vehicle crashes