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ultrasonic sonar (range finder circuit)

Discussion in 'General Electronics' started by Quack, Mar 2, 2004.

  1. Quack

    Quack Guest

    Hi,

    I cant find a circuit for the ranges i want in a sonar project.

    I want to be able to read very rough distances between about 1/2 meter
    to 10 meters, within about a half-foot accuracy is fine.
    The simplest circuit would be best.

    anyone know a simple example around the place somewhere ?

    I have some examples, but they are all less than 1 metre range.

    Alex.
     
  2. Pelin

    Pelin Guest

    Perhaps, a Laser detector? Power Suply, triger, receiver with JFET amplifier
    and monostable. And small circuit with slope capacitor charging and AD
    converter to read the voltage level upon reception of the echo. All driven
    by the MCU.
     
  3. Quack

    Quack Guest

    Perhaps, a Laser detector? Power Suply, triger, receiver with JFET amplifier
    Nah laser is not suitable. It wont reflect well of all surfaces (or
    glass) and in this usage, it will be a danger for peoples eyes.
     
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