"汽车防盗报警系统设计与实现"

As technology continues to advance, the need for more advanced and effective anti-theft systems for automobiles becomes increasingly important. The development of various types of anti-theft devices has been an ongoing process in response to the growing threat of car theft. This document presents the design of a car anti-theft alarm system based on a single-chip microcomputer (MCU). The MCU AT89S52 serves as the control core for this anti-theft system, and the design covers various aspects including the minimum system design for the MCU, the design of the anti-human approach infrared detection circuit, the design of the glass shock and body shock detection circuits, the design of the anti-car door opening detection circuit, the approach to the driver's seat detection circuit, the design of the car ignition lock circuit, as well as the design of the wireless remote control and wireless alarm circuits. The document provides a detailed study and design of each part of the car anti-theft alarm system, and also includes the design of the MCU and its peripheral circuits, along with a set of classic program algorithms, offering a comprehensive and effective hardware and software solution for the car anti-theft alarm system. Key words for this design include: single-chip microcomputer, pyroelectric, Doppler effect, vibration, wireless alarm, remote control.