This dataset contains all data gathered from the urban sensor network deployed as part of the Walker St Sensor Project.
Sensors were placed on the external walls of a government building to gather environmental data. That data was to be used to better inform the building's HVAC management system to pre-empt outdoor conditions and keep internal conditions more consistent and controlled.
Sensor modules were based off of the Seeed Stalker platform, which uses the Atmel ATmega328 microprocessor. XBee Pro transceivers were used for wireless networking due to their low power consumption and high range capabilities in urban environments. An ad-hoc wireless mesh network was used to transport sensor data to a single collection sink to process and store data. The sensor suite (summarised in Table 1 of the related publication) hosted several sensors to capture various environmental factors including air temperature (°C), relative humidity (%) and illuminance (lux). An infrared contactless thermometer captured wall temperature in °C. Air, surface, and case temperatures were all captured by separate temperature probes (also in °C). Most units were on external walls, three were fixed to roof surfaces (9-11) and unit 8 was installed in the roof access cavity. Sound pressure was recorded to monitor anthropogenic and animal activity. Sound pressure was recorded using a generic microphone to show relative sound levels. Sound pressure in dBA has been approximated by comparing the sensor output against a calibrated meter, but the measurements may not be indicative of real-world levels due to changes in mounting configuration, testing environment, sensor drift, and other variance between units. The unit IDs and their locations are listed in Figure 1 of the related publication, and in the dataset.
The full methodology is available in the publication shown in the Related Publications link below.