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I always wondered the same about ultrasonic parking/proximity sensors on cars.
by _Microft 2y ago
I always wondered the same about ultrasonic parking/proximity sensors on cars.
- HeatrayEnjoyer 2y agoWhat cars produce ultrasound? I thought radar is used.
- matteason 2y agoWikipedia says both ultrasonic and electromagnetic are used: https://en.wikipedia.org/wiki/Parking_sensor https://en.wikipedia.org/wiki/Parking_sensor One of the references is for a Mercedes system that uses ultrasound
- buildsjets 2y agoEvery single car from every manufacturer that has PDC sensors in the bumper, which are typically visible as 4 circular sensors on the surface of the bumper.
- ptero 2y agoMost cars have ultrasonic sensors for parking and radar for longer range detection, such as cruise control.
- ornornor 2y agoI hear some car alarm sensors when passing by, the ones that will trigger when someone is about to park too close and hit the armed car.
- houseplant 2y agoinduction stovetops create extremely loud high pitched noises, some get up to 100+ decibels. You can't "hear" it but at higher heat levels you can definitely "feel" it in your ears.