Thursday, April 26, 2018

SensorData - Sigfox & LoRaWAN - Rain, Temp, RH.

We have a SensorData Sigfox and a SensorData LoRaWAN in our office garden. We have some interesting sensors attached:
  • Both devices have soil moisture probes. These are from our partners at Aquacheck. The devices will talk to any SDI-12 sensor. This gives the soil moisture, as a percentage, from 6 sensors within the probe. The probes are about 1m long and buried in the ground.
  • One has a Digital Matter Ambient Sensor. This measures temperature and relative humidity.
  • One has a tipping rain gauge attached to a digital input. The device counts the tips as pulses. Each pulse is 0.2mm of rain.
  • Both are getting a GPS fix every 24 hours.
  • They are all polling the sensors every 30 minutes. They read the sensor values, and transmit them on their respective networks.
They are all reporting to our SensorDemo platform: http://sensordemo.digitalmatter.com/. Check out the data for yourself at that link. The Device Serials:
  • Sigfox: 21F5B4 
  • LoRaWAN: 70B3D57050000574
Connectivity is via:
  • Sigfox - Sqwidnet runs the local SA network
  • LoRaWAN - Comsol runs a public network in SA. We can see 6 gateways from the office. They use Actility in the background.

Here's our setup.

Here is the pulse count on a graph - each pulse is a rain gauge tip. Each tip is 0.2mm. Jo'burg is dry now, so this is us putting some water through it.

Soil Moisture. 6 sensors reported as percentages.

Temperature and humidity. Jo'burg has glorious winter weather!

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