The Design Of Wireless Monitoring Alarm System

As the development of mobile communication technology, computer network technology and the rapid multimedia technology, the monitoring system has been widely used. Many times due to some special reasons such as technical and financial, people can not always enter the scene of the monitoring space, a very good solution about this problem is remote monitoring system, for unattended occasions provide new means of monitoring.Wireless data transmission technology more reasonable cost, relatively low threshold of technology, the emergence of GPRS technology also makes possible about the real-time data transmission between remote monitoring centre and the scene in monitoring systems. Because the development of the remote monitoring, and data collection level, data transmission formats have become increasingly rich, through SMS, GPRS data transmission to MMS. Therefore, the article design a wireless monitoring and control systems sent MMS alarm message through GPRS network.The article use Atmega128 microcontroller, through the acquisition alarm sensor to the front then judge the information, using serial camera, shoot pictures and send MMS to pre-set phone numbers through the GPRS network. If sent MMS failure can sent SMS alternative. This article focus on a detailed description of the overall programmer, the module interface circuit design and implementation, the software implementation process, and described in detail the system used by the various modules of the principle of performance indicators and other parameters. Commissioning and testing through the system, has sent the alarm information and stable operation, achieve the ultimate design requirements.