Stranger Detection
February 7, 2024
Introducing AI Video Analytics for Stranger Detection: Our system uses smart technology to watch over your space. It can quickly spot unknown people and
Solutions · AI Solutions
A helmet only protects a worker if it’s actually on. Collie’s cameras watch mandatory PPE zones continuously, flag anyone without a helmet the moment they step into frame, and turn every violation into a compliance trend your team can actually act on.
Why it matters
Someone can pass a PPE check at the entrance and take a helmet off five minutes later. The real risk lives in what happens after the gate.
Manual spot-checks at a gate say nothing about whether a helmet stays on for the rest of the shift.
An injury from a missed PPE violation carries a cost far beyond the incident itself — medical claims, insurance, and downtime.
Without a record of violations by zone and time, there’s no way to tell which area or shift actually needs more attention.
What’s inside
Mark which cameras cover mandatory helmet areas, so detection focuses exactly where it’s required.
A violation shows up live in the Collie web app, so a manager can act immediately instead of finding out after the fact.
Trends by zone, shift, and date reveal where violations cluster, turning individual incidents into something you can act on systematically.
Runs across every camera covering a PPE zone, giving a comprehensive view of the whole site rather than a single checkpoint.
How it flows
Cameras in mandatory PPE zones continuously check for a helmet on every person in frame.
A missing helmet triggers an indicator in the web app instantly, so a supervisor can step in on the spot.
Every violation logs into a compliance record, building the trend data that shows where to focus safety efforts.
Part of the Work Safety algorithm set
No Helmet Detection is one algorithm in Collie’s broader Work Safety category, which also covers missing vests, harnesses, masks, and other PPE. Sites often run several together on the same cameras. See the full Video Analytics library for everything it covers.
MOD.03 · Also on the fleet
Construction and industrial sites change layout constantly. A Collie robot can carry the same helmet detection through areas that don’t have a fixed camera yet — useful for zones that shift as a project progresses.
Where it’s deployed
Active work zones where PPE compliance shifts as the project moves through phases.
Production floors with fixed PPE zones and steady worker traffic all shift long.
Forklift and loading areas where head protection is required near moving equipment.
Sites with overhead hazards where a missed helmet carries serious consequences.
The video analytics engine scans workers on camera and flags anyone without a helmet in a zone where one is required, without needing a person to watch the feed.
The same detection approach used for helmets applies to other visible PPE compliance checks, and can be configured to the specific gear required on your site.
Yes, every connected camera runs the same check simultaneously, so compliance can be monitored across multiple zones rather than one spot at a time.
The event is logged with a timestamp, location, and often a snapshot, and can notify a site safety officer in real time.
Yes, PPE compliance events feed the same dashboard as access and attendance data, giving a fuller safety record for audits and incident reviews.
Introducing AI Video Analytics for Stranger Detection: Our system uses smart technology to watch over your space. It can quickly spot unknown people and
Tell us about your PPE zones and current cameras, and we’ll show you what live compliance monitoring would look like.