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Waspmote Sensors

Overview

Waspmotes are a product developed by Libellium (hardware and API), with the software developed at UTS.

There are three types of Waspmotes distributed on ceilings throughout the building. Each waspmote has an array of sensors and takes readings intermittantly, sending that data wirelessly using Digimesh (a 802.11.15 protocol).

There are two Meshlium Gateway's per floor, providing the wireless bridge between the sensors and the EIF databases

NOTE: Floor plans (downloadable) show the locations for the Waspmotes. Those Waspmotes labelled “Meshlium powered” (two per floor) are powered by the mains supply and not subjected to battery power problems. The data from these sensors can be relied on as being current and reliable.

Sensor Types

  • Type A -has 5 sensors on-board
    • Temperature (°C)
    • Humidity (%RH)
    • Luminosity (lux)
    • Noise (dB)
    • Dust Particles (mg/m³)
  • Type B -has 7 sensors on-board
    • Temperature (°C)
    • Humidity (%RH)
    • Luminosity (lux)
    • Oxygen (%)
    • Volatile Organic Compounds (VOC) (ppm)
    • Air Pollutants (ppm)
    • Carbon Dioxide (ppm)
  • Type C -has 8 sensors on-board
    • Temperature (°C)
    • Humidity (%RH)
    • Luminosity (lux)
    • Oxygen (%)
    • Air Pollutants (ppm)
    • Nitrogen Dioxide (ppm)
    • Liquefied Petroleum Gases (ppm)
    • Carbon Dioxide (ppm)

Methodology

There are two software implementations of the waspmotes:

  • Mains Powered These are connected to grid power. The sensors warm for a minimum of 30 seconds before sampling, and they report measurements every 5 minutes. Nominally there are two of these per floor located next to a Meshlium. The extra warming time of the sensors allows for greater accuracy of data gathered from their sensors
  • Battery Powered These sensors rely on their internal batteries. The sensors warm for a minimum of 5 seconds before sampling, and they take measurements every hour. This results in less accurate readings but is necessary to conserve battery life.

The data contained in the databases are raw readings, and most sensors data cannot be interpreted without comparing that data to the relevant datasheet and understanding their circuit implementation. The following pages provide a guide as to how to do this for each sensor.

Naming Convention

Waspmote Names are in the following format e.g. ES.B10.230.44F8

  • ES: Environmental Sensor
  • B: Waspmote Type B
  • 10: Located on Level 10 (Building 11)
  • 230: Waspmote Number 230 (refer to the map to match this with physical position)
  • 44F8: Last 4 digits of the Digimesh MAC address (a unique identifier for the unit….these 4 digits DO NOT appear in the numbering format on the floor plans….so you should ignore them)

Sensor names are represented by a shortened code - and are as follows:

Code Sensor Name
TCA Temperature Celsius
HUMA Relative Humidity
LDR Luminosity
O2 Oxygen
CO2 Carbon Dioxide
NO2 Nitrogen Dioxide
VOC Volatile-Organic Compounds (Hydrocarbons)
LPG Liquid Petroleum Gases
AP2 Air Pollutants
DUST Dust Particles
MCP Microphone
BAT Battery

Downloads

Working Sensors (July 2019)

Sensor Location Records this year (2019)
ES_A_03_153_CE2A 17720
ES_A_11_300_7BCD 5680
ES_B_01_411_7E39 335895
ES_B_02_412_3E68 336103
ES_B_04_415_7BD1 189832
ES_B_05_416_7C15 290279
ES_B_05_417_7C13 337807
ES_B_06_418_7BED 189207
ES_B_06_419_7C09 335287
ES_B_07_420_7E1D 334519
ES_B_07_421_7C17 335783
ES_B_08_422_7BDC 282616
ES_B_08_423_7BE2 280192
ES_B_09_424_B74C 338399
ES_B_09_425_3E8D 335775
ES_B_11_428_3EA4 340583
ES_B_11_429_3E90 143456
ES_B_12_431_7BC2 335759
ES_C_13_302_C88E 382039
internal_sensors.txt · Last modified: 2019/07/30 01:43 by admin