Air-quality sensor grid — Smart city
Calibrated PM2.5 and gas sensor networks with open data. Delivered for a smart city client in Mundra.
- Location
- Mundra
- Year
- 2021
- Duration
- 26 weeks
- Team
- 6 engineers
- 522
- nodes
- 4.6 µg/m³
- calibrated error
- 2.8 min
- data cadence
The challenge
Data existed but lived in spreadsheets and legacy systems, so decisions were made on instinct rather than evidence.
What we built
We ran a two-week discovery sprint, then built and fielded the system end to end on LoRaWAN, TimescaleDB and XGBoost, with operator training and an SLA.
Delivery timeline
Phase 1
Discovery sprint and site survey
Phase 2
Prototype built and tested in the Motera lab
Phase 3
Pilot on site with before/after measurement
Phase 4
Scale-out, training and handover
Highlights
- Documentation, drawings and source handed over at close
- Safety case reviewed with the client's EHS team
- Remote monitoring and over-the-air updates included
- Operator training delivered in Gujarati, Hindi and English
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