基于单片机的电子音乐门铃的设计
致 谢
在为期近四个月的毕业设计结束之即，我首先要感谢XX老师给予我的指导和帮助。在刚拿到课题时，我感到非常迷茫，无从下手。但是在彭老师的细心指导下，我渐渐有了思路，并且对这个课题产生了浓厚的兴趣。在X老师那里，我不仅学到专业知识，更学到了对人真诚、对事负责认真的做人原则。
我要感谢曾经一些指导过我的老师，在他们那里我不仅学到了专业知识，而且对设计的整体思路更加清晰了。同时，我也要感谢电气系在设计期间为我们提供了一个良好的设计环境。
最后，我还要感谢本小组成员对我的帮助。
作者：
2008年6月5日
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XX大学毕业设计（论文）
参考文献
[1] 徐玮.51单片机综合学习系统—1602字符型液晶显示篇[J].电子制作,2008,2(1):1-3 [2] 苏成富.多功能音乐门铃[J].电机电器技术·日用电器,2000,(3)：68-69 [3] 郇玉龙,赵宁.用单片价设计电子音乐门铃[J].电子制作·用单片机制作, 2007,(5)：24-26 [4] 夏方林.基于AT89C2051的单户可视对讲门铃室内分机的设计[J].微计算机信
息,2004,5(10):96-97
[5] 胡俐蕊,朱彪. 多功能电子门铃的设计与实现[J].电子元器件应用,2006.10,(8):35-38. [6] 冯育长等.单片机系统设计育实例分析[M]，西安电子科技大学出版社，2007. [7] 李念强等.单片机原理及应用[M]，机械工业出版社，2007.
[8] 吴金戌等.8051单片机实践与应用[M]，清华大学出版社，2002. [11] 沈红卫. 单片机实用系统设计实例与分析[M]. 北京：北京航空航天大学出版社. [9] 谢魁.一种新型的语音门铃 电子与自动化[J]，2000（3）：46-47.
[10] 孟利民, 张明珊. 无线可视对讲门铃系统中语音通信的设计与实现[J].浙江工业大
学学报，2005.2(1)：24-27.
[11 ]何立民. MCS-51系列单片机应用系统设计[M]. 北京：北京航空航天大学出版社，
2003.
[12] 潘永雄. 新编单片机原理及应用[M]. 西安：西安电子科技大学出版社，2003. [13] 陈明荧. 8051单片机课程设计实训教材[M]. 北京：清华大学出版社，2004.3. [14] 胡汉才. 单片机原理及其接口技术[M]. 北京：清华大学出版社，第2版，2003. [15] 韩治军等.单片机应用系统设计[M]，机械工业出版社，2005
[16] 李宏，张家田. 液晶显示器件应用技术[M]. 北京：机械工业出版社，2004.1. [17] 汪德彪. MCS-51单片机原理及接口技术[M]. 北京:电子工业出版社，2003.
[18] 韩志军，沈晋源，王振波. 单片机应用系统设计---入门向导与设计实例[M]。北京：机械工业出版社。
[19] 沈红卫. 单片机应用系统设计实例与分析[M]. 北京：北京航空航天大学出版社。 [20] 楼然苗，李光飞.51 系列单片机设计实例[M].北京：北京航空航天大学出版社，2003. [21] 李广第，朱月秀，王秀山.单片机基础[M].北京：北京航空航天大学出版社，2001. [22] Versatile microcomputer AT89C51[EB/OL]，2001.
[23] Barry M. Flax Intelligent Buildings.IEEE Communication Mag-azine, 1991, (4).
[24] Zadeh L.A. The Optimized Disign of the Fuzzy Controller[EB/OL]. New York：Academic Press，1999.
[25]MotorolaInc.Semiconductortechnical.dataDB/OL].http://www.chipdocs.Com/datasheets/datasheet – pdf/Mo to rla/MC145481. pdf.
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AT89C51SMC1602VCCDB0VSSDB1VLDB2R/WDB3RSDB4EDB5BLADB6BLKDB7P1.0P1.1P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7EA/VPPALE/PROGPSENP2.6P2.5P2.3XTAL2XTAL1VSSP3.6P2.7VCCAT24C02P2.4P2.2P2.1P3.7P2.0VCCWP.SCL.SDAA0.A1A2.GND.VCCP0.3P0.2P0.14.7K4.7K4.7K4.7KP0.0VCCVCCK1K2K3VCCP1.2P1.3P1.4P1.5P1.6P1.7P3.3P3.4P3.5RESETP3.0P3.1P3.2VCCK410K基于单片机的电子音乐门铃的设计
VCCRESET20μ+5VDS1302+3.6VVCCVCC32.768kHz10pFVCC2VCC1X1SCLKX2IOGNDR/S/T/10pFISD1420A6A5A3A7A4A2A1A0PLAYLPLAYERECRECLEDXCLK..VCCDVCCA.VSSDVSSASP+SP-0.1μANA IN ANA OUT100K.100μF..LM386.5Ω100K0.1μF10K10μF5.1K1K10K5K.VCC.P2.4100K+5V470Ω9012..100K0.001μ100K1KLEDMICMIC REFAGC0.1μ10K220μF0.1μ10KMIC4.7μF470K.附录A：总图
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0.1μF10μ220μF
30pF30pF12MHZXX大学毕业设计（论文）
附录B：外文文献及译文
Visual Round wireless doorbell in the voice communications system design and implementation
First:Introduction
Microelectronics technology, wireless technology and network technology for the development of modern people living environment of security, facilitate the provision of a strong technical support，This presents a smart area for the safety of the new wireless doorbell system visualization Round, On the system's overall structure and working principle and the key technology full-duplex digital voice communications for the design and realization of，Analysis of the digital transmission of voice processing, a frame structure on the design and realization of the CPLD in a wireless doorbell system visualization Round-frame synchronization . Finally, the prototype system by the field test, stable performance, reliable, clear voice, has good practical value.
The development of electronic, wireless and network technology provides the strong technical support for security and convenience of modern residential quarters. In this paper, we introduce a new style wireless visual inter-conversation doorbell system, which is used in the intelligent residential quarters. Then explains the structure of this system, and it’s full-duplex digital voice communication is designed and implemented. We emphasize the digital voice process in transmission, and discuss the design of the structure of frame, and the frame synchronization realized in CPLD. Finally, the test result shows a stable and reliable quality, clear voice and fairly practical value. Second:Features
At present domestic doorbell has been a lot of visualization products, mainstream product is wired, one-way voice and Simulation. Visual Round wireless doorbell system combines computer technology, wireless communications and digital signal processing technology used in high-frequency wireless transmitter receiver, installation without cabling, would not undermine the effectiveness decoration. Visual Round wireless doorbell system is the next generation of electronic security systems, modern gardens, Villa, Villa ideal security device. Family in the living room, through the screen to see images, voice speaking, remote understanding of the situation outside, accurate judgement visit in the capacity of the reception to decide whether to open the door to protect the family's personal and property safety. The system uses modular hybrid technology, digital voice, video simulation, the future is all-digital wireless doorbell system visualization talk of a transition, the system's main features are:
(1)2.4 GHz, 900MHz high-frequency signal transmission.
(2)In the 60 m clearly within the scope of stable transmission audio and video signals at a
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基于单片机的电子音乐门铃的设计
barrier such as distance is 30m.
(3)If on the doorbell, \(4)Wireless unlock, and control of the electric door lock control. (5)Indoor Wireless proactively monitor.
(6)Delay shut down automatically monitoring system.
(7)Wireless transmission, the receiver can easily be placed, easy installation. (8)Wireless full-duplex voice communication. The system is composed of two parts: part of indoor and outdoor part. Visual Round wireless doorbell system uses full-duplex digital wireless voice programmes, indoor and outdoor machines are corresponding to the four basic modules, including A / D / A modules from voice codec chip MC145481 completed, the speech signal processing module from the CPLD digital voice signals as well as a package of reconciliation package synchronization, thereby enhancing anti-jamming capability. wireless transmit / receive modules to deal with the digital signal modulation and demodulation, it suitable for wireless channel transmission. Third:Voice transmission processing
Although voice processing digital signal transmission than analog signals have great advantages, but digital signal analog signal difficult than receiving, processing requirements more stringent than the analog signal, with the development of society, wireless communication equipment widely used, resulting in increased electromagnetic interference, and advances in technology enabling wireless receiver continuously improve receiver sensitivity, wireless receiver in the corresponding sent equipment will not be there when the output data demodulation. Wireless communications must be according to data frame transmission of data packet, and must be adopted and reliable way to ensure the frame synchronization of data from the chaos of the data frame will be legitimate identified. Frame synchronization can be used in synchronous or synchronous code. Synchronization of the relatively high hardware requirements to achieve more difficult, it seldom use more than a code synchronization. Synchronous Code should ensure that the choice of code and data re-synchronization code probability as low as possible, so as to the general application of the HS .That the need for re-design code to escape if a frame set up between the timer and overtime provisions of the transfer agreement in the data frame length, frame synchronization code can be arbitrary choice, the general choice 0xAA, 0x55, such as 0 - 1 uniform Distribution of data, and in order to improve reliability, often the choice of multi-byte frame synchronization code, such as 0xAA 0xBB (2-byte frame synchronization code).
To establish stable communication, a standard wireless data transmission frame should include at least the following parts:
(1) Jumping code: in the receiving establishment phase, providing reception threshold level, its length and hardware relevant data, wireless doorbell system visualization Talkback used in the x99 is 0.
(2) redundant code: According to experience, usually adopts a 0xff or 0xff, 0x66 results were relatively good, and the establishment of communication to correct errors arising from the phase-out-of-step serial receiver, in the slow speed (<19200 bps), the two often use
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