I would be interested to see the patent too and see how you are achieving this in something that conceptually could be retro fitted inside a watch. I used to work in product development for military data acquisition, sensors etc so know most of the technology available.
A few assumptions that would answer some of the questions posted:
1. The device doesn't continually transmit its location via GPS, that would use a lot of battery power as mentioned. It's not a Sat Nav. It sits in a very low power 'receive mode' waiting for an instruction to wake up and transmit.
2. It doesn't need to transmit often to track down, the closer you get the more you request a position.
3. High value items depreciate fast, it is only likely to be worthwhile for the first few years of service. This is much more feasible now in terms of 'lifetime operation'.
4. Alternatively the value of the product would justify having it serviced at certain intervals, such as a watch, the cost/scope of this could be incorporated into the maintenance cycle.
5. There are power harvesters available, although the output is low they can supplement a very low power microprocessor requirement well when there is physical movement/vibration or regular temperature changes
Main flaw, you cannot reliably transmit/receive GPS data indoors.
I would be interested to know:
1. Does it use power harvesting (not readily available last time I was working on this stuff) or just good battery management and low power design?
2. Is it designed to work indoors (even if you won't say how)?
A few assumptions that would answer some of the questions posted:
1. The device doesn't continually transmit its location via GPS, that would use a lot of battery power as mentioned. It's not a Sat Nav. It sits in a very low power 'receive mode' waiting for an instruction to wake up and transmit.
2. It doesn't need to transmit often to track down, the closer you get the more you request a position.
3. High value items depreciate fast, it is only likely to be worthwhile for the first few years of service. This is much more feasible now in terms of 'lifetime operation'.
4. Alternatively the value of the product would justify having it serviced at certain intervals, such as a watch, the cost/scope of this could be incorporated into the maintenance cycle.
5. There are power harvesters available, although the output is low they can supplement a very low power microprocessor requirement well when there is physical movement/vibration or regular temperature changes
Main flaw, you cannot reliably transmit/receive GPS data indoors.
I would be interested to know:
1. Does it use power harvesting (not readily available last time I was working on this stuff) or just good battery management and low power design?
2. Is it designed to work indoors (even if you won't say how)?
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