基于DSP的车载点烟器弹出力测量系统设计

点烟器目前已经成为汽车的必备品,其机械性能对于驾乘安全与用户体验至关重要。针对汽车厂商实际需求,设计一套专业、高效的车载点烟器弹出力测量系统,从而对其机械性能进行有效检验与评估。本系统从功能实现角度可理解为一个基于嵌入式系统的集数据采集、数据分析等功能于一体的电子系统。系统以TI公司专用于控制、测量领域的TMS320F2812系列DSP芯片为核心处理器设计采集系统,利用Visual Basic 6.0开发环境设计上位机用户操作平台。结合系统所要实现功能给出完整的解决方案,详细介绍了硬件电路的工作原理及系统固件和用户端软件的设计实现。系统最终进行了工业级实测,实现了对点烟器弹出力多周期高精度的测量,利用上位机软件可以对测量结果进行显示、分析与存储。

Design of eject force testing system for vehicle-mounted cigarette lighter based on DSP

Cigarette lighter has become an essential product for vehicles,whose mechanical performance is significant in driving safety and user′s experience. A system for measuring the pop-up force of vehicle-mounted cigarette lighter was designed to meet the actual demand of car manufacturers,which is professional and efficient in assessing and inspecting the mechanical properties of their products. The system can be abstracted as an embedded CPU-based small integrated electronic system including data acquisition,analysis and other functions. In the system,the DSP chip in TMS320F2812 series of Texas Instruments,which dedicates in the control area,is taken as the core processor of the system to design the acquisition system,and users’ operating platform on PC is designed with Visual Basic 6.0 development environment. A complete solution based on the system request is given in this paper. The working principles of the hardware circuit are described in detail. The firmware and user interface were designed. The system has been used in the factory ultimately,and the high-precision multi-cycle measurements of cigarette lighter pop-up force has been realized. The mesuring results can be displayed,analyzed and stored in the user software of the upper computer.