Kart/sensors/HCSR04

From FSI
Revision as of 12:56, 19 August 2015 by Francois.corthay (Talk | contribs)
Jump to: navigation, search

Contents

Ultrasound ranger

The elecfreaks Ultrasonic sensor distance measuring module receives a trigger pulse, startMeasure, sends an ultrasonic pulse train and then provides a pulse, distancePulse, whose length is proportional to the sound flight and echo time.

Ultrasound ranger.svg

It has a dedicated connector on the I/O board.

The ultrasoundRanger block in the sensors FPGA counts the ultrasonic pulse length in terms of the 10 MHz clock periods. The distance is thus given by:

distance = count \cdot 0.0017 ~ [cm]
Personal tools
Namespaces
Variants
Actions
Navigation
Modules / Projects
Browse
Toolbox