A sensor is a device that detects changes in physical quantities and converts them into electrical signals. Sensors are classified as analog or digital and can be active or passive. Common types of sensors include temperature, pressure, infrared, ultrasonic, smoke, gas, alcohol, touch, and humidity sensors. Optical sensors convert light or changes in light into electrical signals. Multispectral scanners collect data across multiple wavelength bands. The LISS-III is a remote sensing camera from ISRO that provides multispectral data in 4 bands. Wide field sensors are used to detect a wide view of an area, while pan sensors produce high resolution images using visible light.

1. SENSORS

2. SENSORS
• A sensor is a device that detects the
changes in electrical or physical or other
quantities and thereby produces an output
based on the pre-set values entered or the
current conditions
• It is a device that converts signals from
one energy domain to electrical domain.

3. • Photoelectric, Thermoelectric,
Electrochemical, Electromagnetic,
Thermooptic
• Electric, Biological, Chemical, Radioactive
CLASSIFICATIO
N OF
SENSORS
ANALOG
SENSORS
PASSIVE
SENSORSDIGITAL
SENSORS
ACTIVE
SENSORS

4. TYPES OF SENSORS
• Temperature Sensor
• Proximity Sensor
• IR Sensor (Infrared Sensor)
• Pressure Sensor
• Ultrasonic Sensor
• Smoke, Gas and Alcohol Sensor
• Touch Sensor
• Humidity Sensor

5. OPTICAL SENSOR
• Electro-optical sensors are electronic
detectors that convert light, or a change in
light, into an electronic signal.

6. MULTISPECTRAL SCANNER
(MSS)
• A scanning system used to collect data over
a variety of different wavelength ranges is
called a multispectral scanner (MSS)
MSS
Along-track
Sensors
Across-track
Sensors

7. LISS
• Linear Imaging Self-Scanning Sensor -
LISS III is a remote sensing satellite
camera from ISRO, India.
• The LISS – III camera provides
multispectral data in 4 bands.

8. WIDE FIELD SENSOR
• Wide Field Sensor are use for detecting
and capturing a wide view of pariticular
area.
• This type of sensors are mailny used in
different seasons to detect

9. PAN SENSOR
• Single channel (panchromatic) imager
producing better than 10 m ground
resolution.
• Sensitive to light of all colors in the visible
spectrum panchromatic film.

10. THANK YOU
MADE BY
ABHISHEK KUMAR SINGH