Ranging-system

  

Rating: 0.00 / 5 
Inside:
Ultrasonic Circuits / Audio Circuits
Combine an electrostatic transducer with an ultrasonic transceiver IC to build a ranging system that senses objects at distances from 4 inches to more than 30 feet. Transducer Yl `s broadband characteristic simplifies tuning. The secondary of T1 resonates with the 500-pF capacitor Cl at a frequency between 50 and 60 kHz.
Ranging-system - schematic

You tune L1 to this frequency by using an oscilloscope to note the maximum echo sensitivity at pin 1. Step-up transformer T1 provjdes 150-V bias for the transducer.

News


  • Digital Journal
    Seed Invention Will Literally Transform Mixed Signal Analog for the $14.9B U.S. Sensor MarketSpeaking from the company's Ottawa office, Mr. Waite said that Seed's building block will dramatically enhance the performance of all current and
     20 April 2016
  • IEEE Spectrum
    IEEE Spectrum The quadrotor itself is a conventional FR4 printed board integrating all the essential electronics as well as serving as the primary structural component of the Picobug. The crawler is designed by our collaborators at MIT using
     29 March 2016
  • IEEE Spectrum
    IEEE Spectrum Cars: BMW 7 SeriesThe Wi-Fi–connected tablet manages just about everything, including a Bowers & Wilkins system with 1,400 watts and 16 speakers, and a panoramic roof with 15,000 LEDs forming a starlight pattern.
     29 March 2016
  • IEEE Spectrum
    IEEE Spectrum It is more challenging than the speech recognition that are common today. That's because the mouth assumes between 10 and 14 shapes, called visemes, while speech has 50 different sounds called phonemes. So the same viseme can c
     24 March 2016
  • The Verge
    The Verge But those were just demos, R&D projects which so far haven't been made commercially available. That all changes today with ... It now has two cameras and two sensors on its belly, twice what the last version had. DJI says that
     1 March 2016
  • IEEE Spectrum
    IEEE Spectrum Recently I was listening to a talk—ostensibly about the future—in which the smartphone was pictured as an evolutionary end point that would last indefinitely. I thought, Nothing is forever, and forever comes very qui
     29 February 2016
  • IEEE Spectrum
    As the Apple and FBI standoff continues, I asked Rick Mislan, a mobile device security expert who has worked with law enforcement agencies around the country and written for IEEE Spectrum on the topic (see “Cell Phone Crime Solvers”,
     22 February 2016
  • IEEE Spectrum
    Free desktop programs like Fldigi can work with the tones used in a smorgasbord of communications schemes, from the 1930s-era radio-fax Hellschreiber protocol to today's complete bulletin-board systems. But linking the computers running such&nb
     19 February 2016
  • IEEE Spectrum
    IEEE Spectrum Nearly 20 years ago, ESPN, the sports oadcasting network, began displaying a yellow virtual first down line when oadcasting football games on television. Developed by Sportvision, a small Silicon Valley company, that yellow line
     30 January 2016

Recommended videos


  • How to Set Up an Ultrasonic Range Finder on an Arduino
    Duration: 12:30.
  • Simple Audio Amplifier using LM386
    Duration: 0:48.
  • 20KHz 100W 110V or 220V Ultrasonic Generator Circuits
    Duration: 0:13.

.


Leave Comment

characters left: