👷 Confined Space

Worker presence and vital monitoring per OSHA 29 CFR 1910.146. Tracks entry/exit, breathing patterns, and heart rate via CSI presence sensing on ESP32-S3.

Industrial OSHA 1910.146 Hard install v1.2.0 24 KB

Workers inside

3

of 4 authorised

Avg breathing rate

14bpm

normal 12–20

Avg heart rate

78bpm

across active workers

Active alerts

1

vital_alert · last 5 min

Permit time left

42:18

entry permit #CS-2026-0084

Active workers

All

Inside

Alerts

Live event stream

streaming

Confined space map — Tank 7B

CSI presence zones · sensor anchored at hatch (north)

Now

Heatmap (1h)

Shift

presence detected vital alert attendant (outside) CSI channel-state-information presence

Vitals · live telemetry

tracking

Breathing rate — bpm

avg across workers inside · rolling 30 min

nominal

-30 minnow

Heart rate — bpm

avg bpm across workers inside · rolling 30 min

elevated

-30 minnow

OSHA 1910.146 checklist

permit-required confined space

3 / 4

Atmospheric test · pre-entry	passed
Attendant on standby	R. Park
Continuous vital monitoring	active
Rescue plan acknowledged	pending

Entry / exit log — shift 2026-05-15 07:00

authoritative record · persisted to RVF index

Time	Worker	Direction	Permit	Duration inside	Notes
07:02:14	R. Park	attendant	CS-2026-0084	—	shift attendant
07:08:31	D. Okafor	entry	CS-2026-0084	1h 12m	—
07:09:02	J. Chen	entry	CS-2026-0084	1h 11m	—
07:14:48	M. Alvarez	entry	CS-2026-0084	1h 06m	vital_alert
06:55:11	K. Rivera	exit	CS-2026-0083	2h 41m	handover to Chen

Hardware & signal source

ESP32-S3 channel-state-information (CSI) presence & breathing detection

online

MCU ESP32-S3-WROOM-1

radio 2.4 GHz Wi-Fi CSI

fw cs-csi-1.2.0

uptime 4d 17h

rssi -54 dBm

frame 25 ms

vectors 124 / s → RVF

Emits worker_present, vital_alert, entry, exit, breathing_rate events to the V0 appliance · signal source: CSI presence, breathing.