Environmental Sensor Telemetry Data

Context

Environmental sensor telemetry data, detailed in the blog post, Getting Started with IoT Analytics on AWS, published on Towards Data Science.

Content

The data was generated from a series of three identical, custom-built, breadboard-based sensor arrays. Each array was connected to a Raspberry Pi devices. Each of the three IoT devices was placed in a physical location with varied environmental conditions.

| device            | environmental conditions                 |
|-------------------|------------------------------------------|
| 00:0f:00:70:91:0a | stable conditions, cooler and more humid |
| 1c:bf:ce:15:ec:4d | highly variable temperature and humidity |
| b8:27:eb:bf:9d:51 | stable conditions, warmer and dryer      |

Each IoT device collected a total of seven different readings from the four sensors on a regular interval. Sensor readings include temperature, humidity, carbon monoxide (CO), liquid petroleum gas (LPG), smoke, light, and motion. The data spans the period from 07/12/2020 00:00:00 UTC – 07/19/2020 23:59:59 UTC. There is a total of 405,184 rows of data.

The sensor readings, along with a unique device ID and timestamp, were published as a single message, using the ISO standard Message Queuing Telemetry Transport (MQTT) network protocol. Below is an example of an MQTT message payload.

{
  "data": {
    "co": 0.006104480269226063,
    "humidity": 55.099998474121094,
    "light": true,
    "lpg": 0.008895956948783413,
    "motion": false,
    "smoke": 0.023978358312270912,
    "temp": 31.799999237060547
  },
  "device_id": "6e:81:c9:d4:9e:58",
  "ts": 1594419195.292461
}

Columns

There are nine columns in the dataset.

| column   | description          | units      |
|----------|----------------------|------------|
| ts       | timestamp of event   | epoch      |
| device   | unique device name   | string     |
| co       | carbon monoxide      | ppm (%)    |
| humidity | humidity             | percentage |
| light    | light detected?      | boolean    |
| lpg      | liquid petroleum gas | ppm (%)    |
| motion   | motion detected?     | boolean    |
| smoke    | smoke                | ppm (%)    |
| temp     | temperature          | Fahrenheit |

Detail Image of Sensors