A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, temperature, density or any one of a great number of other environmental phenomena. The output is generally a signal that is converted to human-readable display at the sensor location or transmitted electronically over a network for reading or further processing.
A sensor is always used along with an electronic device. We live in a World of Sensors. We can find different types of Sensors in our homes, offices, cars etc. working to make our lives easier by turning on the lights by detecting our presence, adjusting the room temperature, detect smoke or fire, make us delicious coffee, open garage doors as soon as our car is near the door and many other tasks
A good sensor obeys the following rules:
• it is sensitive to the measured property
• it is insensitive to any other property likely to be encountered in its application
• it does not influence the measured property.
A good sensor should have the following characteristics
1. High Sensitivity: Sensitivity indicates how much the output of the device changes with unit change in input (quantity to be measured). For example the voltage of a temperature sensor changes by 1mV for every 1oC change in temperature than the sensitivity of the sensor is said to be 1mV/oC.
2.Linearity: The output should change linearly with the input.
3. High Resolution: Resolution is the smallest change in the input that the device can detect.
4. Less Noise and Disturbance.
5. Less power consumption.
1. Minimize human effort:
2. Save time:
3. Enhanced data collection:
4. Improved security:
5. Efficient resource utilization:
6. Reduced use of other electronic equipment:
7. Useful for safety concerns:
8. Useful in the healthcare industry:
Sensors are used all around us - you may be surprised to know how often our daily routine involves the use of sensors.
The data measured by sensors can be used in:
1. Operating the system efficiently.
2. Monitoring the operations for any abnormalities.
3. Controlling the operations.
4. Utilizing the resources effectively.
5. Making design changes to improve performance further.
6. Enhancing Future product portfolio.