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1、沈阳化工大学学士学位论文 第二章 智能防盗控制系统的总体方案内 容 摘 要近年来，随着科技的发展和人们安全防范意识的提高，钢质防盗门和钢质窗户防盗网等传统的防盗措施已不能满足人们的需要。迫切需要一种面向普通家庭用户，性价比高，运行可靠，可拒非法入侵者于户外的智能防盗报警系统来代替防盗门、防盗网。因此本设计的目的就是为了找到一种适合普通家庭式防盗系统。本智能防盗控制系统应用的设计方法与一般的防盗系统不同，该系统采用了超声波测距传感器与单片机的结合，其中采用超声波测距传感器来提供报警信号的方法使得成本低，易于维护，探头小，可安放于隐蔽的地方且不易被发现，接受信号灵敏，因此有明显的优势和广阔的发展前
2、景。此次设计是针对智能防盗控制系统的设计与研究。最初查找资料,产生总体设计思想,然后绘制原理图并生成 PCB,制板,焊接硬件并进行软硬件的调试。本次设计的产品以 AT89C52 单片机作为系统控制核心，以超声波测距原理为理论依据，完成对外来人员的连续监测，提供了一个带有 3 位 LED 显示、并使其集中到一块面板上，使得操作方便快捷，直接在 LED 显示实时距离，并使功能智能化集中化。系统设有比例电路，将超声波传感输出的 0-12V 电压信号转换成采集芯片能过接收的 1-5V 电压信号，并辅助以软件设计，将转换成的电压信号进行处理，并通过量化程序，得到实时距离并显示出来，此次设计的智能防盗控制
3、系统在发生报警时有 LED 二极管指示灯被点亮现象，从而方便了操作人员对监测的实时监控。沈阳化工大学学士学位论文 第二章 智能防盗控制系统的总体方案此系统设计简洁，不仅继承了传统防盗控制方法的优点，还具有易于维护和实现非接触、高可靠监测的特点，并且硬件开销成本低，适宜大多数普通家庭，汽车等应用。 关键词关键词： 单片机； 超声波测距传感器； 数码管实时显示； LED 指示灯报警AbstractIn recent years, with the development of science and technology and safety awareness and improve steel
4、 door window, steel security preventive measures of traditional already cannot satisfy the needs of the people. In desperate need of a common family for users, cost-effective and reliable operation, but refus unincorporated penetration in outdoor intelligent alarming system security guard against th
5、eft, instead. So this design goal is to find a suitable for ordinary family security systems.This intelligent security control system design method of commonly used with the security system, the system of ultrasonic range-finding sensors and MCU, including ultrasonic ranging to provide alarm signals
6、, easy maintenance, low cost, small probe can be placed in place of concealment and was found, accept signal, so there were sensitive obvious advantage and broad development prospects.This design is for intelligent security control system design and research. First, the overall design for data, and
7、then draw diagram and generate PCB board, welding, system hardware and software and hardware debugging. This product by AT89C52 single chip microcomputer as design of controlling system, with the core principle of ultrasonic ranging as the theory basis, 沈阳化工大学学士学位论文 第二章 智能防盗控制系统的总体方案complete and con
8、tinuous monitoring of nonnative personnel, provides one with three LED display, and make its focus to a panel, convenient operation, direct, and to make that distance function of intelligent centralization. System with proportion, ultrasonic sensor output circuit of 0-12 v voltage signals converts 1
9、-5V, aided by the software design, will convert the voltage signal processing, and through the quantification process, real-time display, the distance and the design of control system in intelligent anti-theft alarm have LED diode indicator lights, and convenient operation personnel for real-time mo
10、nitoring of detection.The system design is simple, not only inherited the traditional security control method, also has the advantages of easy maintenance and realize non-contact measurement, high reliable monitoring, and the characteristic of hardware cost low, suitable for most ordinary families,
11、and automotive applications.Keywords: single-chip; measurement of liquid level; ultrasonic liquid level measurement;沈阳化工大学学士学位论文 第二章 智能防盗控制系统的总体方案目 录内 容 摘 要.IAbstract.II第 1 章 引 言.11.1 综述 .11.2 国内外防盗控制系统的历史、现状与发展 .11.3 本设计研究的内容 .3第 2 章 智能防盗控制系统的总体设计.42.1 总体设计思想 .42.2 工作过程 .52.3 设计步骤 .6第 3 章 智能防盗控制系统的硬件设计.73.1 系统硬件组成 .73.2 AT89C52 的性能和外围电路 .83.3 信号采集超声波测距传感器 .103.4 键盘和显示接口电路 .133.4.1 人机接口单元设计 .133.4.2 HD7279 的基本功能及引脚.133.4.3 MCS-52 单片机与 HD7279 的接口设计.143.5 电压比例转换电路 .163.6 串行通信接口电路 .
