"基于单片机控制的车速里程表设计及应用研究"

本篇学位论文基于单片机控制的车速里程表设计，结合了当前计算机在社会领域的渗透以及单片机在实时检测和自动控制系统中的应用。随着传统控制检测的不断更新，单片机作为核心部件的应用正在不断走向深入。论文讨论了在实时检测和自动控制系统中，单片机作为核心部件的软硬件结合，以及针对具体应用对象特点的完善。在论文中，作者设计了模拟多通道压力系统，利用压力传感器采集当前压力并反映在显示器上，同时能够分析压力过量程，并发出报警。此外，作者还采用了电子秤原理，根据输入单价准确地计算出物体的金额。论文还讨论了简单的倒计时器的设计与制作，尤其针对倒计时器中的四位LED数码显示器，通过采用以软件为主的接口方法，即不使用专门的硬件译码器，而采用软件程序进行译码，来简化线路、降低成本。 关键词: 单片机, AT89S51, LED数码管显示器, keil C51, 倒计时器。 Overall, this dissertation presents a design of a vehicle speedometer and odometer based on single-chip microcomputer control. It includes applications of single-chip microcomputers in real-time detection and automatic control systems, which have become increasingly sophisticated with the advancement of traditional control and detection technologies. The author discusses the comprehensive hardware and software integration of single-chip microcomputers in specific applications, emphasizing the need for a complete understanding of the hardware structure and software tailored to specific application requirements. The dissertation also delves into the design and construction of an analog multi-channel pressure system, utilizing pressure sensors to collect and display current pressure, analyze pressure over-range, and issue alarms. Furthermore, the dissertation incorporates the principles of electronic scales to accurately calculate the amount of an object based on input unit price. The author also explores the design and production of a simple countdown timer, focusing on the use of a software-based interface method for the four-digit LED numeric display in the timer to simplify the circuit and reduce costs. The key words of this dissertation are: single-chip microcomputer, AT89S51, LED numeric display, keil C51, and countdown timer.