FarmSurveillance

Stack IR beams around farmhouse
Every 50m ten IR modules are placed. The range of IR without PWModulated mosfets driving a high powered LED(expensive) is about 50m. This allows a 1hectar farmhouse to be covered by 80 IR modules. With 80 IR modules there will probably be a monkey or chicken triggering a beam about once a night. Place a CctvCameras on each corner for a total of four cameras. On any of the beams being triggered the camera will focus on the point and send a JPEG snapshot using Hamachi to anywhere in the world. The bandwidth requirements will be so low that even a cellphone will suffice. Lets say we have 50 participating farms, then they could pay a security firm in India or China to manually inspect 50 JPEG images per day. Just one security guard should suffice. For added redundancy multiple independant security guards can inspect the JPEG snapshots making human error virtually impossible.

Having a beam triggered every night is not acceptable if the farmer must visually inspect himself what happened. By having say three independant operators in India respond to a JPEG from 50 farms every night will suffice and make it impossible to breach a perimeter without the farmer not being alerted. It goes without saying that one should try and avoid local criminal infiltrated security companies. All that will happen is that the hapless guard will have his house burned down or thrown from a train if he fails to cooperate with the underworld. Outsourcing the whole operation to China and India where a Chinese security guard in Guandong province is less like to conspire to have you killed for your cellphone will solve this problem. As an added security measure the specific guard should not even be told who's perimeter or even in what country it is it being watched..... use your imagination. The more independant security guards responded to an IR infraction the less likely human error will lead to a perimeter breach.

Thus far we have covered the outer perimeter. Any number or IR modules is not stacked as close as possible around the farmhouse itself. I simply can't see how any crook will manage to get past 200 beams. It is impossible to interfere with an IR module without it triggering an alert. In contrast there are many ways of bypassing a PIR. Its fatal drawback is the fact that it only works on heat. I won't go into further details. All these modules are linked via RS485/["RS485"]. RS485 is a critical technology for perimeter security. Each IR module is connected to an AtmelMicro input port with the micro in turn communicating over TwistedPair with the base.

Import Infrared module components
Source the infrared module components directly from the factory in China. Minimum order quantities will range between 1000 and 10000. These are capacitors, resistors, 555 oscilatorors, IR reciever and transmitter. There are many designs for IR transmitters. http://www.velleman.com have kits than one would be able to copy. This will allow us to build these modules at R20 a module. Compare this at R400 for an http://www.inhep.co.za module.

Protect crops
The same concept extends to protecting crops. Stack 5 beams every 50m around crops after first laying underground ducting via TelephoneNetworkRollout for the DrillBoxes. Securing a 100x100m block of macadamias will cost R1600 for the infrared modules alone. Combining CctvCameras and InfraredLedsis an extremely cost efficient way to implement perimeter security. Motion detection alone is not practicle on extended perimeters.