The Design And Implementation Of The Embedded Remote Computer Monitoring System For Home Security

With the improvement of people's life,people pay great attention to home security and the real image of home is needed anytime.So the remote computer monitoring system for home security is researched and designed.The system is an embedded system.The operating system running on the system isμC/OS-Ⅱand the AT91SAM7x256 is selected as MCU chip which bases on ARM7TDMI.The image is input from the serial captures image model.The image is transferred by RTL8021BL chip to the remote computer.The PHY chip RTL8021BL is selected,which makes an easy application of the system Light Weight IP protocol.The embedded system can be connected to Internet.The user can make remote monitoring,take photos,record image,through the computer.When the patrol signal is triggered,the system can make automatic dialing alarm through the public telephone network.Compared with present monitoring systems,the system shares the following advantages:Running the multithread task by using the ARM chip, automatic dialing alarm by telephone network and the remote image monitoring function by the Internet,Furthermore,the system is endowed with advantages of low investment in prior period,longer transmission,fast transfer speed,convenience,and always online.The work of this topic is constituted by the hardware design and the software designs.It includes the main board electric circuit design,the Ethemet electric circuit design,the power supply electric circuit design,and the dialing number alarm circuit design and implementations.The transplantation and test of the LwIP and theμC/ OS-Ⅱ.The design and implementation of the procedure based on image monitoring.