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针对当前国内外机动车制动性能测试技术状况及发展趋势,在分析现有制动性能测试仪的特点、功能和技术开发手段基础上,提出基于C8051F系列单片机的便携式机动车制动性能测试仪设计方案。在兼顾性能和成本的基础上,以C8051F340单片机和专用三轴数字加速度传感器LIS3LV02DQ为核心,设计出具有很高性价比的便携式机动车制动性能测试仪。通过实验室静态校准和现场实车路试数据,证实了该仪器的测试精度、重复性和稳定性。
In view of the current domestic and international vehicle braking performance testing technology status and development trend, based on the analysis of the existing braking performance tester characteristics, functions and technology development means, based on the C8051F series single-chip portable vehicle braking performance tester Design. Based on both performance and cost, C8051F340 microcontroller and a dedicated three-axis digital acceleration sensor LIS3LV02DQ are taken as the core to design a highly cost-effective portable vehicle brake performance tester. Through the laboratory static calibration and on-the-spot real road test data, the instrument’s testing accuracy, repeatability and stability are verified.