SIH MRPL — Aura One — Aditya Jadhav

Aura One worker app with an assigned Aura Band — Worker monitoring screen rendered from the app’s test fixtures.

Aura One QR scanner interface — Aura Band identification and scanning interface; app test fixture.

Aura One final band reading interface — Final-read interface from the project demonstration.

Prototype strip samples on a printed Aura Band badge template — Physical prototype strip samples. The photograph documents form, not measured exposure.

Aura One HSE exposure register — Exposure register rendered with engineering test fixtures, not real worker exposure data.

Watch the project

The problem

Occupational exposure monitoring needs a traceable link between a worker, a monitoring period and a reading. Aura One investigates a passive colour-changing band that could record cumulative hydrogen sulphide exposure, paired with a phone-based reading workflow.

The approach

The project combines a physical Aura Band prototype, a Flutter application and a deterministic image-processing engine written in Dart. The software identifies the badge, corrects perspective and colour using printed references, checks reading quality, and manages worker records, HSE review and on-device reporting. The linked repository documents the measurement pipeline and its research status. Screens shown here come from the project’s demonstrations and test fixtures.

System flow

Scan and identify the Aura Band
Assign it to a worker and monitoring period
Capture a final photograph
Check image quality and extract optical features
Record the result state for review and reporting

Outcome

The band and software are research prototypes. H₂S calibration and laboratory validation remain pending; the project does not claim validated exposure measurements. The passive band is not a real-time gas alarm.