7 Important Things to Know About Ultrasonic Sensor

Ultrasonic sensors have evolved drastically in the past few years. Today, these devices are used in a range of applications like measuring the distance between two objects. The sensor works with the help of ultrasonic sound waves. The sound waves are carefully converted into electrical energy. When compared to audible sound waves, UV waves tend to travel at a faster pace. This means human ears are not capable of hearing these sounds.

An ultrasonic sensor has two important components, the receiver and the transmitter. The transmitter controls the amount of sound that is emitted by the piezoelectric crystals. While, the receiver encounters the sound which is transmitted towards the target. To compute the distance between the source and target object, the time required for the sound to reach is utilized. The total time required is nothing but two times the distance, divided by the speed of sound (343 meters/second).

 Now, here are a few interesting facts about the ultrasonic sensor.

 1. Not all ultrasonic sensors have a receiver and a transmitter, positioned in two different devices. Many times, you will come across devices that combine both the transmitter and the receiver in a single package. This means, the same sensor takes care of emitting and receiving the UV signals. These sensors are often smaller in size and are extremely convenient to use. 

2. The ultrasonic sensors and radars can be utilized for the same purpose. They are both designed to take care of sound-based applications. However, the ultrasound sensor is several times more effective and efficient than the radar. 

3. If you are using a target object that is capable of absorbing sound or if the object has a "uniquely different" shape that reflects sound waves - the readings you have will be incorrect, and unreliable. This means, you need to be cautious about the shape and material used.

4. Ultrasound sensors can be used to measure the flow rates of fluids.

5. When you combine readings from several ultrasonic elements, your overall accuracy increases.

6. Many ultrasonic sensors are also known as proximity sensors. They are even used in anti-collision and parking technology.

7. These sensors are not influenced by airborne particles, gas or smoke. However, physical components like heat can affect the readings.  

 

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