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MMari.2
MMari.2
Visitor II
March 18, 2021
Solved

APIs for Interrupt Based People Count - VL53L1x

  • March 18, 2021
  • 1 reply
  • 737 views

Hi,

Are there any examples for Interrupt based people count detection?

We required Interrupt method for power optimizations, longer battery life.

Please help us.

Regards

Mariswamy

This topic has been closed for replies.
Best answer by John E KVAM

Unfortuantely the Time-of-Flight sensors work by shooting out some light and detecting what comes back. So they consume power with each range. The only ways to save power are to range less often and to range for less time.

Ranging less often works if the person is willing to stand there for a while - think toilet flush applications.

Ranging for less time works, but you get a less accurate distance.

The only real way to save power would be to use a passive I/R sensor, then use the ToF sensor to double check the PIR sensor as they are not very accurate.

1 reply

John E KVAM
John E KVAMBest answer
ST Employee
August 19, 2021

Unfortuantely the Time-of-Flight sensors work by shooting out some light and detecting what comes back. So they consume power with each range. The only ways to save power are to range less often and to range for less time.

Ranging less often works if the person is willing to stand there for a while - think toilet flush applications.

Ranging for less time works, but you get a less accurate distance.

The only real way to save power would be to use a passive I/R sensor, then use the ToF sensor to double check the PIR sensor as they are not very accurate.

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