SENSORS.ppt
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The document discusses different types of sensors, their applications, and limitations. It describes several common sensor types including capacitive, magnetic, photocell, laser rangefinder, sonar, radar, Doppler effect, and passive thermal infrared sensors. Sensors are used across many industries including textiles to detect properties such as light, motion, pressure, and temperature. They have applications in machines, vehicles, manufacturing quality control, and medical and security devices.
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Radar is an electronic system that uses electromagnetic signals to detect objects by transmitting signals and receiving echoes. It was invented in the early 1900s and widely used during World War 2. A radar works by transmitting a modulated signal that bounces off a target and is detected by the receiver. Radar is used for applications like air traffic control, navigation, weather sensing, and military purposes. New technologies aim to reduce radar detection through stealth materials and synthetic aperture radar.
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SENSORS.ppt
- 1. Sensors and its types Presented by: Amanjeet BFT/19/737 Dishita BFT/19/451 Divyanshi BFT/19/423 Sonakshi BFT/19/1933
- 2. OVERVIEW Sensor Introduction Applications Limitations Types Sensors inTextile
- 3. WHAT ARE SENSORS? 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 or any one of a great number of other environmental phenomena.
- 4. General Applications • Good for many short distance, high resolution applications • Can be used to detect the presence or absence of conductive material • Good for long distance monitoring of machinery and industrial devices • Usually works well in extreme environments • Touch sensitive elevators • Cars, machines, aerospace, medicines etc.
- 6. Limitations • Very short range of measurement • Material being measured must be conductive • Target must be larger than the sensor tip • Can only measure displacement in relation to the sensor
- 7. TYPES OF SENSORS • Capacitive • Magnetic • Photocell ( Reflective) • Laser range finder • Sonar ( typically active or passive) • Radar • Doppler effect • PassiveThermal Infrared
- 8. CAPACITIVE SENSOR • A capacitive sensor is a proximity sensor that detects nearby objects by their effect on the electrical field created by the sensor. • Example: It is used for tolerance testing in mass production, vibration measurement etc.
- 9. MAGNETIC SENSOR • Magnetic sensor detect changes and disturbances in a magnetic field like flux, strength and direction. • Example: Squid, Fibre Optic
- 10. PHOTOCELL • Photocell sensors are used to manage outdoor or indoor lighting. • This sensor automatically turns on the light when it gets dark or they detect motion. • To detect and measure light. • Example: in tube lights for security purpose
- 11. LASER RANGEFINDER • Laser rangefinders work using the concept of sensors. The rangefinder emits laser beam at the push of a button. The beam bounces off the distant object and rangefinder calculates the distance. • Example: It is used in Army and during golf, it is used to measure the distance.
- 12. SONAR • SOUND NAVIGATION AND RANGING abbreviated as SONAR. • Sonar is a technique that uses sound propagation to sense objects under the surface of the water • Example: submarine (safe navigation under water).
- 13. RADAR • RADIO DETECTION AND RANGING abbreviated as RADAR. • RADAR is an electromagnetic sensor used for detecting, locating, tracking and recognising objects of various kinds at considerable distances. • Example: detect airplanes, ships, spacecraft.
- 14. DOPPLER EFFECT • The doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to a wave source. • Example: weather forecasting.
- 15. PASSIVETHERMAL INFRARED • A passive infrared sensor is an electronic sensor that measures infrared light radiating from objects in its field of view. • It is used for detection between 5-12 cm.
- 16. SENSORS INTEXTILE INDUSTRY • The sensors are used in all kind of textile machineries but widely used in machines such as air jet loom, auto coner 138, drawing frame etc.The major sensors used are proximity sensor, inductive sensor, photoelectric sensor and electronic module. • Textronics sells sensor components and markets its own line of clothes for personal monitoring under the brand name “NuMetrexTM.”