Electronics sensors IoT applications
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This document discusses various sensors that can be used in IoT applications, including light sensors, temperature sensors, moisture sensors, rain sensors, gas sensors, barometric pressure sensors, and radiation sensors. It provides brief descriptions of common sensors for each category, such as LDR light sensors, DHT11 and LM35 temperature sensors, soil moisture sensors, rain drop sensors, MQ gas sensors, BMP180 barometric pressure sensors, and GUVA-S12SD UV radiation sensors. Application examples and specifications are given for each sensor type.
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Edgefxkits.com has a wide range of electronic projects ideas that are primarily helpful for ECE, EEE and EIE students and the ideas can be applied for real life purposes as well.
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This ppt explains on Fire Fighting Robotic Vehicle that it motivated by the desire to design a system that can detect fires and take appropriate action, without any human intervention.
Edgefxkits.com has a wide range of electronic projects ideas that are primarily helpful for ECE, EEE and EIE students and the ideas can be applied for real life purposes as well.
http://www.edgefxkits.com/
Visit our page to get more ideas on popular electronic projects developed by professionals.
Edgefx provides free verified electronic projects kits around the world with abstracts, circuit diagrams, and free electronic software. We provide guidance manual for Do It Yourself Kits (DIY) with the modules at best price along with free shipping.
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Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
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- 1. Electronics Sensors in IoT Applications Leopoldo Armesto Senior Lecturer Universitat Politècnica de València 1
- 2. Outline Light sensor Temperature sensors Moist sensor Rain sensor Gas sensors Barometric pressure sensor Radiation sensor And more… 2
- 3. Light SensorLight Dependent Resistor (LDR): Its resistance varies depending on the amount of visible light received. Typical circuit application: LDR Calibration: The curve voltage-luminance is nonlinear. 3 KY-018
- 4. Digital Temperature Sensor DHT11 provides: Relative humidity provided in %. Temperature provided in Celsius with degree precision. Uses one digital signal for transmitting and receiving data. 4 KY-015 4
- 5. Analog Temperature Sensor Analog temperature sensor LM35. Linear response. Resolution: 10mV/C Precision: 0.5C at 25C temperature. Range: −55°C to 150°C 5 KY-070
- 6. Digital Temperature Sensor Digital temperature sensor 18B20 uses 1-wire interface and allows to connect multiple sensors just using one digital pin. Temperature in Celsius and Kelvin. Temperature alarm handler 6 KY-001
- 7. Moist Sensor Soil/moist sensor FC-28 with two electrodes. Analog output is proportional to resistance changes of soil moist. Digital output activated when the signal is higher than a threshold value adjustable with a potentiometer. Voltage decreases with moist. Typical values around 2.5V slightly moist soil and 4~5V for dried soils. 7
- 8. Rain Sensor Detects rain drops by measuring the resistance of the circuit board. The more water the lower the resistance. Analog output is proportional to the amount of rain drops. Digital output activated when the signal is higher than a threshold value adjustable with a potentiometer. 8 Rain sensor Signal amplifier
- 9. Gas Sensors Gas sensors can detect among many type of gases: LPG, butane, propane, methane ,alcohol, Hydrogen, smoke, etc… The working principle is based micro aluminum oxide ceramic tube a tin dioxide sensitive layer, measuring electrode and heater. Requires calibration of ‘clean air’ resistance to provide measurements in ppm. 9 MQ gas sensors
- 10. Barometric Pressure Sensor Barometric pressure sensor. It measures the absolute pressure of air. Range from 300 to 1100hPa with accuracy 0.02 hPa. It can also measure altitude and temperature. Requires altitude at sea-level (depends on your location) I2C interface. 10 BMP180
- 11. Radiation Sensor Analog UV light sensor GUVA-S12SD. Light range 240-370nm. Analog output (0~1200mV). UV-index 11 UV-index 0 1 2 3 4 5 Vout (mV) <50 227 318 408 503 606 UV-index 6 7 8 9 10 11 Vout (mV) 696 795 881 976 1079 1170 GUVA-S12SD
- 12. and more… 12 RFID Card reader Camera Barrier sensorLimit contacts
- 13. Electronics Sensors in IoT Applications Leopoldo Armesto Senior Lecturer Universitat Politècnica de València 13