Looking for an ultrasonic detector

Discussion in 'General Electronics Chat' started by rasheed_it, May 26, 2012.

  1. rasheed_it

    Thread Starter New Member

    Mar 26, 2011
    12
    0
    I have an equipment that uses ultrasonic waves... but at times it fails.I need a transducer that will be able to detect the presence of ultrasound and correspondingly an LED should light up.

    I came across few pairs of TX and RX in d market. not sure how to use the Rx part alone....

    Any help??
     
  2. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,172
    397
    Is this an ultraso
     
    Last edited: May 26, 2012
  3. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    You could try to look for a bat detector circuit.
    That will convert the ultrasonic sound to a sound you can hear.

    Bertus
     
  4. rogs

    Active Member

    Aug 28, 2009
    279
    37
    Most of the 'pairs' of cheap ultrasonic transducers will only generate or receive ultrasound at 40KHz. Is that the frequency of your ultrasound?
     
  5. absf

    Senior Member

    Dec 29, 2010
    1,492
    372
    The part, datasheet, schematics are all available here. It operates on 40KHz. Are you going to construct it or just buy it?

    http://www.escol.com.my/kits/ES-015-2.html

    http://www.escol.com.my/Sensors.html#Ultrasonic_Ceramic_Transducers

    Unfortunately, the values on the components are not given. Maybe you have to buy the kits or hunt for another similar circuit on the net.

    Allen
     
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