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摘要本毕业设计的无线防丢器和人们的生活紧密联系，它是社会进步、科学技术发展的一项重大成果。本设计主要分为主机和从机两个部分，主机主要包括STC89C52单片机控制模块、nRF24L01无线发送和接收模块，声光报警和震动报警模块等，本模块由主人随身携带。从机主要包括STC89C52单片机控制模块、nRF24L01无线发送和接收模块、声光报警模块、灯光提示电路、晶振电路模块以及复位电路模块，放置于容易丢失的物品上。因为主机和从机都应用nRF24L01无线收发模块通过2.4G技术进行信号传递，所以主机和从机都能够进行信号的发送和接收。如果两者的距离没有超过规定的范围内，接收模块便能接收到信号，不会发生报警现象；但是如果当距离超过安全距离时，主机就会报警并且产生振动。该设计在原本无线防丢器的基础上添加了振动报警模块，体现出了此设计的创新之处。在如此忙碌且快节奏的现代生活中，振动报警功能的作用越来越突出，发挥的作用不可小觑。69108
该论文有图22幅，参考文献16篇。
毕业论文关键词：无线防丢器 STC89C52 nRF24L01
The Design of Wireless Anti-lost Device System Based on MCU
Abstract
This graduated design of the wireless anti-lost device is related to people's lives, it is the social progress, the development of science and technology a major achievement. It is the social progress, but also a major achievement of science and technology development. This design is mainly pided into two parts of the host and slave, The host unit mainly includes STC89C52 MCU control module, nRF24L01 wireless transmission and reception module, sound and light alarm and vibration alarm module, etc., carried by the owner. Slave unit mainly includes STC89C52 MCU control module, nRF24L01 wireless transmission and reception module, sound and light alarm module, lighting tips circuit, oscillator circuit module and reset circuit module, placed in easily lost items. Because the host unit and slave unit are contained using 2.4G technology nRF24L01 wireless communication module, so the host unit and slave unit can send and receive signals. If the distance between the two does not exceed the specified range, the receiving module will receive the signal, the alarm phenomenon will not occur. But if the distance is more than a safe distance, the host unit will alarm and vibrate. Based the design of the original wireless anti-lost device, vibration alarm module is added, which reflecting the innovation of this design. In such a fast-paced of modern life, the function of the vibration alarm is more and more prominent, the role played by it should not be overlooked.
Key Words：Wireless anti-lost device STC89C52 nRF24L01
目 录
摘 要 I
Abstract II
目 录 III
图清单 V
1绪论 1
1.1设计背景 1
1.2设计目标 1
2方案设计与论证 2
2.1系统方案设计 2
2.2模块方案设计 3
3电路设计 5
3.1单片机主控模块的设计 5
3.2 NRF24L01无线模块的设计 10
3.3声光报警模块的设计 14
3.4按键模块的设计 15
4软件设计
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