PRESENTATION BY ATIF DAR

ULTRASONIC SENSORS.

CONTENTS PAGE

• Page 1 – Homepage

• Page 3 – Description of Ultrasonic Sensor.

• Page 4 – How the Ultrasonic Sensor Works.

• Page 5 – How it is used in the Industry.

• Page 7 – The End

What is an Ultrasonic Sensor?

• Ultrasonic sensors will convert ultrasound waves to electrical signals, the ones which transmit and receive are called ultrasound transceivers, in addition the devices work on radar and sonar systems.

• Moreover An ultrasonic sensor can generate high frequency sound waves and can also evaluate the echo which is received back by the sensor.

• Measuring the timer interval between sending the signal and receiving the echo will determine the distance of an object, in addition the passive ultrasonic sensors are mainly microphones which will detect the ultrasonic noise that is present, it will then convert it to an electrical signal and lastly report it to the computer.

HOW DOES AN ULTRASONIC SENSOR WORK?• Ultrasonic sensors are normally defined as electronic

devices, this means that they can emit an acoustic wave which is beyond the range of human hearing, in addition the range of an ultrasonic sensor is normally determined by the frequency of vibration from the transducer (converts pressure or brightness into an electrical signal), this means as the frequency increases, the sound waves will then transmit progressively through shorter distances.

• As the frequency decreases, the sound waves will transmit progressively through longer distances, this means long range ultrasonic sensors will work best when there is a lower frequency and long range ultrasonic sensors work better at higher frequencies.

• Ultrasonic sensors are also used when scanning to see a baby as the image shows.

Some Examples of what Ultrasonic sensors are used for.

HOW ARE ULTRASONIC SENSORS USED IN THE INDUSTRY?

• Ultrasonic sensors are mainly used to detect movements of targets and also to measure the distance to the targets, some types of sensors have an On and Off digital output which detect the movement of objects, in addition the sensors with analogue outputs varies regularly to the sensor which will target the separation distance.

• The ultrasonic sensors are widely used in automotive applications, an example would be parking assist technology, ultrasonic sensors are now being tested in wide ranges of uses, some of them are people detection and assisting in UAV navigation.

• Ultrasonic sensors use sound rather than light when they are detecting, ultrasonic detection is normally a great solution when it comes down to clear label detection, clear object detection and also for liquid level measurements.

• Passive ultrasonic sensors can be used to detect high pressure gas or even liquid leaks, lastly an ultrasonic transducer is affixed to a stainless steel pan which is then filled with solvent and then a square wave is applied to it.

The End