| Digital cellular mobile telecommunication standard as the European GSM system in 1991 in Europe, because its open standards and many other advantages, soon in worldwide to a wide range of applications, the realization of mobile users worldwide network. Short message as GSM system in the most simple and convenient way of data communication, its business and application is rapid development. Whether communication equipment manufacturers, or operators of DouZhengQuan heart into short message application and development.Based on the synthesis of computer, wireless communication, automation control technology, combined with MCU, SMS module design and implement a based on GSM network of SMS messages multimedia classroom anti-theft systems. This system has low cost, mature technology, reliable, and can effectively solve the advantages of various schools of the multimedia classroom expensive equipment safety problems.This paper discusses "based on GSM network of multimedia classroom SMS message anti-theft system design and realization of the". This paper firstly multimedia classroom anti-theft alarm system the research background, the purpose, significance and alarm system of existing features, development of the system of the related technical basis. Each unit is introduced and alarm system hardware circuit and 51 assembly source program design and system commissioning, focuses on the hardware circuit design, software and the source code. Finally, the research and development of an anti-theft alarm system and prospects. This system has been applied in yunnan normal university business school of the multimedia classroom management and effective to solve the security problem of multimedia classroom. System is stable and reliable, and the use of 2 years without error alarm and leakage alarm, this system has proved the use value. |
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