Proximity Sensor

Proximity Sensor

Ultrasonic sensor 20 20,000 Hz 20 Hz Infrasonic 20 kHz

Ultrasonic

()

Ultrasonic

40 kHZ Ultrasonic Sensor

Ultrasonic Sensor mitter Ultrasonic

ver 1. 2.

Receiver (Threshold)Threshold)) output

-

Ultrasonic Sensor v = 343 m/s ( 20 ) - 20 ms

s=vxt = (340 m/s)x(20x10-3 s) = 6.8 m

3.4

Ultrasonic Lego Mindstorms NXT

Touch Sensor Touch Sensor

0 Touch Sensor 1 Touch Sensor Sound Sensor

dB dBA 90 dB (%)

4 - 5% - 5 - 10% - 10 - 30% - 1 30 - 100% -

Sound Sensor View Sound dB Sound Sensor NXT

Light Sensor ensor Light Sensor

Light Sensor Light Sensor Light Sensor 1. Reflected Light

2. Ambient Light Reflected) Light Reflected) Light Light Sensor

Ambient Light Ambient Light Light Sensor Light Sensor Ultrasonic Sensor

0 - 2.5 3 Ultrasonic Sensor

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