These frequencies are beyond hearing range of humans. Wave of frequency range of 20000hz and thereabouts are called ultra-sonic wave and these waves can be detected by an ultrasonic sensor which helps ...

Ultrasonic sensor HC-SR04 is used in this lab to measure distance in ... The actual amount of time can be determined when the system clock frequency is used to compute the amount of time each counter ...

Abstract: In order to prevent persons from accidents in private spaces, the authors have proposed and designed an ultrasonic sensor system modeled after the echolocation function of FM (frequency ...

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic sensor, decided to build his own speaking distance sensor (.de, Google Translation). Inside [Klaus ...

like with this ultrasonic flow meter, could be a big deal for DIY projects and the trades in general. The principle behind the sensor [ItMightBeWorse] is working on is nothing new. He discovered a ...

Abstract: We present the acquisition and processing of a multi-offset ultrasonic tomography experiment in which ... The resultant non-linearity causes the failure of a frequency-domain waveform ...

The ultrasonic technology enables 4-in-1 combined sensor operation. The instrument is suitable in binary gases for medical ventilators, assisting in the global pandemic that has resulted from the ...

Designed to withstand the unique challenges and wide range of conditions in both wind energy and maritime applications, the newly released Vaisala Ultrasonic Wind Sensor WM80 brings accurate wind ...