IoT Sensor Range Details

Pebble
Doc
Airlab
abacus
census

Pebble

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Function:

Human presence sensor

Dimensions:

100mm x 90mm x 25mm

Weight:

100g

Typical use:

Measure the occupancy and utilization of individual workspaces such as desk

Operation:

  • Pebbles use a low power microwave Doppler sensor to detect human presence
  • Detection takes place in a sphere with a 600mm
  • The signal is a low power (0.011 watts) non-ionizing 3.2 GHz radio wave
  • The signal detects through materials such as wooden desktops and seating foam
  • Battery life is extended by selecting optimal detection period and reporting intervals
  • The standard operation is aligned with normal working hours
  • Detection is completely anonymous and not intrusive.

Measures:

Occupancy
People Counting
Co2
TVOC
Temperature
Humidity
Ambient Sound
Light Lux
Particulate Matter

Placement Example:

Communication:

  • Onboard Bluetooth LE Module
  • The module enables communication with the Doc (gateway for delivering data to the Solutions Hub)
  • A common ratio for deployment is 20 to 30 Pebbles to one Doc
  • No connectivity or integration with client-side networks (LAN, Wi-Fi etc.)
  • Low data volumes, cost effective & robust

Power:

  • Battery powered
  • 3.7V LiPo battery
  • Rechargeable via Micro USB
  • The signal detects through materials such as wooden desktops and seating foam
  • Battery lifetime (12 to 18 months)
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