摘要
针对传统基于单片机设计的出租车计费器系统的诸多不足,提出了一种利用VHDL设计的基于CPLD的出租车计费器系统的设计方案。该方案模拟了出租车的启动、停止、暂停、换挡等功能,并用动态扫描电路显示出租车所走的里程及其所需要的费用。所有源程序均在QuartusⅡ9.0下实现编译、仿真,可实现自动计费、自动计程及实时显示等功能。由于使用CPLD芯片,因而具有外围电路少、灵活、功能强、可靠性高、成本低等优点,可用于实际的出租车计费系统。
Aiming at the disadvantage of the traditionally taximeter system based on the SCM, a new design scheme of taximeter system based on CPLD is proposed, which is designed with VHDL. The scheme simulates the function of the taxi such as start ,stop ,pause, shift and so on, and show the mileage and the cost of taxi by the dynamic scanning circuit. All of the source program is in Quartus II 9.0 to realize the function of compile, simulation, automatic charging, measure the distance automatically and real-time display. With the CPLD chip, the system has the advantages of less peripheral circuit, flexible, functional, high reliability and low cost. It is available for the real taxi charge system.
出处
《物联网技术》
2013年第6期23-24,27,共3页
Internet of things technologies
