摘  要

该毕业设计选题源于实际应用需求与技术创新探索的结合。基于STC89C52单片机的智能扫地吸尘小车设计，旨在利用红外传感器和超声波模块实现环境感知与自主避障，满足家庭清洁自动化的需求。通过此设计，不仅提升了清洁效率，也展现了单片机在智能控制领域的广阔应用前景。

本文设计了一款基于STC89C52单片机的智能扫地吸尘小车。该小车通过集成红外传感器和超声波模块，实现了对周围环境的实时检测与感知。小车能够根据检测到的环境信息，智能规划运行轨迹，并通过单片机输出的不同PWM脉冲信号精确控制其行进速度和方向。经过实物测试，该智能扫地吸尘小车能够按照预定轨迹自主行走，并具备自动检测障碍物和自主避障的能力。本设计不仅提高了扫地吸尘的自动化和智能化水平，也为类似智能移动平台的设计提供了有益的参考。

关键词：STC89C52单片机；红外传感器；超声波模块；智能扫地吸尘小车；自动避障

Abstract

The topic selection of the graduation project comes from the combination of practical application needs and technological innovation and exploration. The design of intelligent sweeping vacuum car based on STC89C52 SU aims to use infrared sensors and ultrasonic modules to realize environmental perception and autonomous obstacle avoidance, and meet the needs of home cleaning automation. Through this design, it not only improves the cleaning efficiency, but also shows the broad application prospect of SCM in the field of intelligent control.

This paper designs an intelligent sweeping car based on STC89C52. By integrating the infrared sensor and the ultrasonic module, the car realizes the real-time detection and sensing of the surrounding environment. The car can intelligently plan the operation trajectory according to the detected environmental information, and accurately control the travel speed and direction through the different PWM pulse signals output by the MCU. After physical testing, the intelligent sweeping vacuum car can walk autonomously according to the predetermined trajectory, and has the ability to automatically detect obstacles and independently avoid obstacles. This design not only improves the automation and intelligent level of sweeping and vacuuming, but also provides a useful reference for the design of similar intelligent mobile platform.

Key words: STC89C52 single chip microcomputer; infrared sensor; ultrasonic module; intelligent sweeping vacuum trolley; automatic obstacle avoidance