Ultrasonic Sensor
An ultrasonic sensor is a sensor that uses low-frequency sound waves (ultrasonic waves) for distance measurement, object detection, and obstacle avoidance.
Working of Ultrasonic Sensor
- The transmitter module in the sensor emits high-frequency sound waves of the frequency 40kHz or higher.
- The emitted sound waves then travel through air in the form of continuous wave.
- While travelling, when the sound waves encounters the object in its path, it get reflected.
- The sensor receives the reflected sound wave and then calculate the round trip time.
- The measurement of time helps in determining the distance to the object.
- The distance of the object is calculated with the help of the formula: Distance = (Speed*Time)/2. It is being divided by 2 because sound is making a round trip.
Sensors in Electrical Engineering
Sensors are the detection devices of the digital world. It senses the physical change in the environment and converts the sensed data into machine-readable or understandable language. The sensors are of two types i.e., analog and digital sensors. As the name suggests, an analog sensor provides analog values which is a set of infinite values. On the other hand digital sensor converts the data into digital signals which is a set of finite values. There are various types of sensors that are being used in various fields like the automation industry, healthcare sector, and many more.
In this article, we will study sensors, types, and practical applications.
Table of Content
- Important Terminologies
- Classification of Sensors
- Types of Sensors
- How Are Sensors Used?
- The Future of Sensor Technology
- Applications
- Advantages and Disadvantages