INTRODUCTION:

An ultrasonic sensor is an instrument that measures the distance to an object using ultrasonic sound waves.

An ultrasonic sensor uses a transducer to send and receive ultrasonic pulses that relay back information about an object’s proximity.  

High-frequency sound waves reflect from boundaries to produce distinct echo patterns.

WORKING:

The working principle of this module is simple.  It sends an ultrasonic pulse out at 40kHz which travels through the air and if there is an obstacle or object, it will bounce back to the sensor.  By calculating the travel time and the speed of sound, the distance can be calculated.

Ultrasonic sensors are a great solution for the detection of clear objects.  For liquid level measurement, applications that use infrared sensors, for instance, struggle with this particular use case because of target translucence.

For presence detection, ultrasonic sensors detect objects regardless of the color, surface, or material (unless the material is very soft like wool, as it would absorb sound.) 

To detect transparent and other items where optical technologies may fail, ultrasonic sensors are a reliable choice

APPLICATIONS:

Distance measurement is based on the measurement of time-of-flight.  The time between sending and receiving the reflected sound signal is calculated by the sensor.  Ultrasonic distance sensors, like the MB7360 HRXL-MaxSonar-WR, are used as height monitors, in bin level measurement and proximity zone detection applications.   

• • • Ex. Distance measurement would be applied in a garage parking application, sensing when a vehicle is pulled completely into a garage.

• • • The MB7360 has been used as a bin level sensor to detect the presence or absence of grain and other materials in bins.

• • •  Our UAV Sensors for Drones as well as our proximity sensors that are   used for robots are for obstacle detection.

• • • Ultrasonic sensors are suitable for close range detection up to ten meters and provide multiple range measurements per second.

• • • Main advantages:

        1. Low power consumption – can be powered by battery, inexpensively.

        2. It can operate in many environmental conditions – ultrasonic sensors work in smoke-filled environments, where other sensors would fail.

GROUP MEMBERS:

1.DHANUSH KUMAR (RA2111013010038)

2.MADHUMITHA B (RA2111013010055)

3.SANVI NAIDU (RA2111013010046)

4.SARTHAK NAYAK (RA2111013010065)

5.VARAGUNA RAJAN (RA2111013010066)

6.OJAS MALLIK (RA2111013010043)

7.SREYA (RA2111013010048)