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Webinar 1: How physical sensors in IoT work, what they can do and what they cannot.


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Accelerometer, temp and humidity meters, magnetometers, reed contact, light sensor, CO2, GPS, WiFi Atlas, WiFi Google, and WiFi high precisions.

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Webinar 1: How physical sensors in IoT work, what they can do and what they cannot.

  1. 1. IoT sensors How physical sensors in IoT work, what they can do and what they cannot Webinar Insight 1 Hosted by: Pavel Sodomka 4.6.2019
  2. 2. About this webinar Who is this webinar insight for? Sales, technical pre-sales, sales, support SO’s and integrators, IoT platforms. Technical level: intermediate Format: 30 mins presentation + 15 mins Questions & Answers session Speaker: Pavel Sodomka, Founder & CEO at SimpleHW
  3. 3. Please be aware this is just elementary introduction. There are hundreds of sensors and approaches. New types of sensors appear almost every month.
  4. 4. Basic features of each sensor Price (0.2 - 40 USD) Consumption (mostly negligible in comparison with Sigfox emission) Longevity (6 months - 20 years) Resolution/sensitivity/noise Precision Range of measurement Size 1x2 mm - 50x20mm Operating/temperature range Intelligence due to local processing Cheapest, lowest power, smallest is accelerometer Most expensive, highest power is CO2 and GPS
  5. 5. MEMS - included in every mobile phone Accelerometer Measuring direction to the earth center Measuring acceleration Lowest price, lowest consumption Magnetometer Measuring direction to North Pole Basically a compass Low price, middle consumption Gyroscope Measuring steady movement in all directions Middle price, high consumption Very often combined into one chip
  6. 6. Accelerometer usage Movement detection Vibration detection Free fall Impact detection Tilt/inclination
  7. 7. Magnetometer usage Rotation in vertical axis Either in relation to Earth magnetic field or to a closeby permanent magnet Door opening detection Valve opening detection Mobile road sign orientation
  8. 8. Gyroscope usage Mostly in stabilizing drones, cameras, segways etc. Can project paths between points in tunnels with no GPS coverage
  9. 9. Smartness (can be implemented in IoT device or in FW of the MEMS) Activity recognition Sleep recognition Human fall recognition Standing recognition Pedometer Gesture recognition
  10. 10. Reed switch Switched on/off by permanent magnet, very reliable Usage: Classical 2 piece door sensor Truck door opening Counting rotation (bike)
  11. 11. Temperature/humidity sensor Very often combined Beware of confusion between precision and resolution Beware of confusion of different precision in different temperature ranges External probe is needed only when most precise temperature is needed Approximate temperature can also be measured on processor and/or accelerometer giving roughly 2° C precision
  12. 12. Light sensor Detection of light on/off Detection of light intensity for agriculture Usage: Box opening Office/ factory hall lights on/off control Manhole/cabinet opening
  13. 13. Tensometer Measuring weight Can be expensive, longevity issue Usage: Beehive weighting IBC/Europallet weighting
  14. 14. Barometric pressure Sensing change in air pressure Usage: Sensing flight take-off and landing Sensing container vertical movement by several meters
  15. 15. Distance, proximity and volume meters Laser/infrared based Ultrasound based Capacitive Usage: Tank levels Recycle bin opening blockage detection Recycle bin fullness
  16. 16. PIR sensor Basically a low resolution camera in IR spectrum Movement of objects with different temperature
  17. 17. Gas sensors CO sensor for deadly bad combustion - cheap, low power consumption VOx sensor for office/school quality monitoring - cheap, low power Can be recalculated to approximate CO2 level (open the window now) CO2 sensor for office/school - high precision can be very expensive, with high battery consumption and short lifetime
  18. 18. Smoke detector Optical recognition of smoke
  19. 19. Flood detector Change in conductivity between two conductors Very reliable, must be properly implemented if 10 years battery life and resilience against false alarms is demanded.
  20. 20. Meteo sensors Wind Rainfall Soil humidity Rather difficult to implement properly.
  21. 21. Sound sensors Comparing to pre recorded sound Analyzing pitch Doing analysis through AI Usage: Preventive maintenance Alarm systems Wall sprayers
  22. 22. External sensors Hundreds of industry grade sensors sending data in digital pulses or in 0-10 V voltage. Can be connected to Sigfox universal I/O devices such as
  23. 23. Location sensing GPS Only Passive-receiving timings from satellite 1-5m precision, medium to high power consumption,expensive, needs open sky WIFI sniffing 100 m precision, low cost, works indoor WiFi beacon sniffing 2-3 m precision, low cost, works indoor Bluetooth beacon sniffing 1 m precision, medium cost, needs setup Ultrawideband active RFID 30 cm precision, expensive BTS fingerprinting 1 km precision, cheap, Sigfox Atlas
  24. 24. Register for more ● Insight 2: SimpleHW API 6 - Why is it revolutionary? ● Insight 3: IOFrog - not another Sigfox platform? ● Insight 4: Training - 7 biggest mistakes in IoT sales and how to avoid them. ● Insight 5: Why IoT is so important for Insurance companies. ● Insight 6: In LEGO boxes we trust - why we don't do end-to-end solution and the role of partners in Sigfox ecosystem. REGISTER HERE
  25. 25. Now it is time for your questions!
  26. 26. Thank you for your time!