Multi-Hop RFID Tags Track Monkeys
Multi-hop RFID tags are being used to prevent monkeys from damaging farms in Asia. NTT West recently showcased its system for assisting farmers.
The first step is to outfit a number of monkeys with RFID tags. RFID stands for Radio Frequency IDentification (read more about RFID tags).
The tags used are a special variety referred to as "multi-hop" RFID tags. The unique feature of these tags is that they can not only send out information, but also read and relay information to other tags. The same tags can be installed on trees or other stationary objects in the environment.
In the mountains, wireless connectivity is difficult to maintain; wireless networks are infeasible. However, the multi-hop RFID tags together form a sort of loose network; they can track each other, and then report back to stationary tags, which can be consulted by farmers.
If a troupe of monkeys is detected, residents are notified of their location via email. Lights and sounds can also be triggered to scare off monkey groups.
The tags are battery-powered and operate in the 429 MHz band; their range is less than one kilometer.
You might be interested in this story about a plan to create a RFID Sensor Tag Shower For Disasters. Found the monkey story here.
Scroll down for more stories in the same category. (Story submitted 6/27/2006)
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