Tuesday, December 20, 2011

PIR Burglar Alarm

This week I constructed a PIR Burglar alarm. Parts I used are: a PIR sensor, an Arduino, a XBee, an XBee Shield, and a high-decibel Siren. The code I used is provided on Make Projects.  I also needed a second XBee and an XBee Explorer.

I decided to use an XBee to send my text alerts wirelessly back to the computer, as part of the Smart Home system, to monitor when a PIR sensor triggers. In the future, the Siren will be on its own node, to be remotely controlled whenever an emergency justifies sounding the Siren.

I'd like to note though that I wont be replacing my current fire alarm system. Smoke Alarms pass stringent standards and are required by law, so I wouldnt ever replace that system with my smart home system. My system just would add a few extra layers of protection in addition to that system. So the Smart Home System would be independent of the Fire Alarm system in a home. As I see it, all nodes will be on XBee, and power will probably be two fold. There will be a backup lithium battery in case power goes out, and the main power supply will come from a land line wired to all the nodes. Nodes that cant be reached with wiring, would have to be solar powered, or simply battery powered.
Next up on my plate is an RFID/XBee Door Entry System. (A link to the product intro is here.) Again, this wont be replacing my keyed locks, this just adds one layer of security on top of existing security features. This entry system in addition to the Face Recognition System I plan to implement, pretty much means, not only will nobody get into my home unless I allow it, but I will know when someone tries to get in with or without my permission. I love biometrics. =)

A merging of two Open CV Logos I found on the web
Please feel free to comment on ideas, Im welcome for suggestions and discussions. As always, I am committed to sharing links of sites I come across that are useful to my research projects. This week, Ive added quite a few more, so take a look.

Peace Out.

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