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针对汽车尾气排放所造成的环境污染问题,设计的一种基于P89C668微处理器的汽车尾气检测系统,采用P89C668单片机、MAX197、CPLD等性价比非常高的电路芯片,软件设计运用了模块化、结构化的设计方法,具有可读性好、代码移植效率高、易于维护和扩充等优点。该检测系统结构不仅比以往仪器大大简化,仪器功耗也大幅度降低(只有以往的1/4),成本也只有以往的1/4,测量精度高,因此更加适合在我国广泛使用。
Aiming at the problem of environmental pollution caused by automobile exhaust, a P89C668 microprocessor-based automobile exhaust detection system is designed. The P89C668 microcontroller, MAX197, CPLD and other cost-effective circuit chips are used. The software is designed with modularized and structured The design method has the advantages of good readability, high transplanting efficiency, easy maintenance and expansion. The test system structure not only greatly simplified than the previous instruments, the instrument power consumption is also significantly reduced (only the previous 1/4), the cost is only the previous 1/4, high accuracy, so more suitable for widespread use in our country.