How to implement an idea motion sensor(?)

Using Arduino Project Guidance
1

I have a small booth that one person can be inside. I want to make that when a person enter this booth after x time some music will start to play and only when he leave the booth the music will stop.
Which sensor is suitable for the above?
how the system can deal with unwanted situation such as the sensor is triggered by mistake?

Thanks

2

There are various sensors that could detect someone inside your booth:

  • Pressure mats: Placed on the floor to detect weight when stepped on.
  • IR presence sensor: Detects body heat to sense if someone is present.
  • Distance sensor: Measures space occupation and detects movement (Ultrasonic sensors, Lidar, ToF ...sensors)
  • PIR (Passive Infrared) sensors: Detects body heat and motion.
  • Capacitive proximity sensors: Senses the presence of a human body based on capacitance changes.
  • Break beam sensors: Laser or infrared sensors that detect when a person interrupts a beam.
    ...

why would it trigger by mistake ?
but in case of failure, a common approach to deal with such situation would be to have multiple detectors using different technologies. For example if you have 3 sensors, you look at what the majority (2 or 3 agree) is saying.

1 Like
3

We use clipsal pir ceiling mount 360 degree to sense room occupancy with a set time out to operate room lights which work well.
For example in the above, it would be rare indeed for zero movement in say a 10 minute time out if no movement were detected .
Unless of course they entered for a quick snooze during work hours but in that case it would be preferred for the light to go off anyhow.