What is a Sensor? Types of Sensors and Applications

Overview

This video explains what a Sensor is and how it is used to detect changes in the environment and convert them into signals for control systems.

A sensor is a device that detects physical or environmental changes such as temperature, pressure, light, or motion and converts them into electrical signals that can be processed by controllers like PLCs.

Sensors act as the “input devices” in automation systems, providing real-time data that allows machines to monitor conditions and make decisions. They are essential in modern systems such as industrial automation, IoT, and smart devices.

What You Will Learn

• What is a sensor and how it works
• Different types of sensors (temperature, pressure, proximity, etc.)
• Difference between analog and digital sensors
• Role of sensors in automation systems
• Importance of sensors in data collection and control

Applications

• Industrial automation and control systems
• Smart homes and IoT applications
• Automotive systems (parking sensors, engine monitoring)
• Medical devices and healthcare monitoring
• Environmental monitoring systems
• Robotics and machine control