- #1
rushi121
- 13
- 0
I am a product developer but not an electronics engineer. I am doing a cost analysis of a product idea for my company. The product will need something like this...
There will be two small portable devices (A and B) 1 meter apart (not in line of sight since A can be in pocket). Product A will keep pinging product B at regular intervals. When pinged, B will send response to A for that ping. A knows that B is still available.
Now, if we move B away from A (e.g. > 3 meters) and if A pings B and since B is out of range, A will not get response from B. In such case A will sound an alarm.
I know we can do device to device communication using RF modules. But I don't know which module or protocol to use for this.
My questions (Please answer considering that I am not prototyping but actual product for market):
There will be two small portable devices (A and B) 1 meter apart (not in line of sight since A can be in pocket). Product A will keep pinging product B at regular intervals. When pinged, B will send response to A for that ping. A knows that B is still available.
Now, if we move B away from A (e.g. > 3 meters) and if A pings B and since B is out of range, A will not get response from B. In such case A will sound an alarm.
I know we can do device to device communication using RF modules. But I don't know which module or protocol to use for this.
My questions (Please answer considering that I am not prototyping but actual product for market):
- Which protocol and module to use?
- Can you point me to any module available in market that I can look into?
- Since A will be pining B at regular interval, will that module drain battery much? If yes, how much long will battery last approximately?
- Any existing product in market you can think of that does something similar (pinging at regular intervals)?
- Do I need a micro controller?