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Wifi Transmission; Energy involved in sending a Wifi Signal

akahn430

Oct 29, 2016
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I'm currently working on a project involving Wifi transmission. The device needs to send a 1-3 digit number to a computer/phone that is 5-15 feet away. Approximately how much energy will this take to send one number?

Thank you!

Austin
 

davenn

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Sep 5, 2009
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I'm currently working on a project involving Wifi transmission. The device needs to send a 1-3 digit number to a computer/phone that is 5-15 feet away. Approximately how much energy will this take to send one number?

Thank you!

Austin


hi Austin
welcome to EP :)

a very odd question
A wifi connection is maintained, once a connection is established with or without data being transmitted
There is continuous background link etc checking going on

do you really need wifi ? Bluetooth would probably be easier

so would you like to tell us what you really mean

Wifi and BT are low transmitter power devices, they will have a minimum power out of maybe around 10 - 20 mW


Dave
 

akahn430

Oct 29, 2016
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Hi Dave. Thanks for the response.

Depending on the range that is needed, I suppose it could use Bluetooth.

What I am trying to get at is: I need to make a system that calculates force in an object when struck (Accelerometer), then sends that force back to a Computer/phone... and it has to power itself, so first, I need to figure out how much energy needs to be generated for each time the Force (1-3 digit number) is sent to the computer, for the system to function.
 

davenn

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Hi Dave. Thanks for the response.

Depending on the range that is needed, I suppose it could use Bluetooth.

What I am trying to get at is: I need to make a system that calculates force in an object when struck (Accelerometer), then sends that force back to a Computer/phone... and it has to power itself, so first, I need to figure out how much energy needs to be generated for each time the Force (1-3 digit number) is sent to the computer, for the system to function.

BT is good for up to 10m

Power needed in the way u are asking is irrelevent as i said earlier there is going to be continuous power usage. Not just when u send data
 

akahn430

Oct 29, 2016
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Thanks again for the response.

So there would need to be a constant voltage? How would I go about figuring out how much energy has to be generated to power the constant voltage?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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So there would need to be a constant voltage? How would I go about figuring out how much energy has to be generated to power the constant voltage?

You multiply:
  1. the voltage (required by the transmitter and produced by the power source)
  2. by the current (drawn by the transmitter)
  3. by the time (that you want the transmitter operating -- could be minutes, hours, or days)
That gives you an amount of energy required.

From that you can choose an appropriate battery.
 
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