Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Trumpkin on November 15, 2007, 07:48:58 AM

Title: ultrasonic and sonar?
Post by: Trumpkin on November 15, 2007, 07:48:58 AM
What is the difference between a sonar sensor and an ultrasonic sensor. Are they the same thing? Which one is better?
Title: Re: ultrasonic and sonar?
Post by: Steve Joblin on November 15, 2007, 07:59:02 AM
I am sure that someone will note some small definitional difference, but for the most part, with regards to robotics, and the companies that make the sensors, they are one in the same.
Title: Re: ultrasonic and sonar?
Post by: Rebelgium on November 15, 2007, 09:17:13 AM
exactly what steve said... :D
Title: Re: ultrasonic and sonar?
Post by: bukowski on November 16, 2007, 10:26:21 AM
well, if you wanted a small definitional difference, here ya go!  :P
Sonar (Sound Navigation And Ranging) is typically associated with underwater acoustics, and it is common to find low and mid frequency sonars that are audible to the human ear (eg you can hear the "ping" of a sonar against a subarine hull), but there are ultrasonic sonars also, like the ones used to find fish on a fishing boat.
Ultrasonics are the frequencies above the level of human hearing, >20Khz.
Title: Re: ultrasonic and sonar?
Post by: Trumpkin on November 16, 2007, 11:30:26 AM
Thanks, that had been bugging me :D.