Applications / Security
Time Limited Area
Detects presence in an area outside the window that area is meant to be occupied — after hours, outside a booked slot, or outside a permit’s start and end time.
See it in action
Presence inside a window, and outside it
What it detects
Harvested from the computer-vision use-case columns of the Q3 industry papers. Every item below is a rule you can switch on, tune per zone and report on.
Presence outside the permitted window
Flags people in a zone at a time the zone rule does not allow, rather than flagging the zone at all times.
After-hours and out-of-hours activity
Covers the periods where a site has the fewest people to notice and the loosest supervision.
Loading and dock activity outside planned slots
Detects loading that starts before or runs past the slot it was booked into.
Dock or trailer door opened outside schedule
Surfaces a door state change at a time no movement was planned.
Permit-window integrity
Checks hot work and confined-space activity against the start and end time on the permit.
Loitering and unusual dwell
Identifies someone remaining in a zone materially longer than the task requires.
Night-shift presence in closed areas
Applies a per-shift occupancy rule, so an area closed for a shift is treated as closed.
Vehicle movement outside an authorised window
Extends the same rule to vehicles moving in or out of a controlled area off-schedule.
Dwell duration per person, per zone
Records how long each presence lasted, not only that it happened.
Out-of-hours events correlated with badge records
Reads the video event against the access-control log and surfaces the pairs that do not match.
Where it applies
The sub-sectors below are the ones the Q3 industry papers name for this detection. Each links to the industry hub.
In Oil & Gas
Time-bound permits in confined spaces on rigs and refineries. Hot-work permits with start/end window enforcement. H2S and gas-zone access windows linked to sensor readings.
How it works
01
Runs on the cameras you already have
Inference happens at the edge on your existing CCTV and IP streams. No new camera estate, no video leaving site, no cloud round-trip in the detection loop.
02
Thresholds and zones you configure
Draw the zone, set the rule, set the dwell, count and confidence thresholds. Rules differ by area, shift and task, because sites do.
03
Evidence, not just alerts
Every event is logged with camera, zone, timestamp and a clip, so the record is reviewable afterwards and usable in a corrective action.
04
Integrates with what you already run
Events push into your VMS, alerting and reporting stack through Fogsphere Manager, with dashboards broken down by area, shift and crew.
Risk & control objective
Most access rules are spatial: this zone, these people. The Q3 papers repeatedly describe a temporal one instead — loading activity outside planned slots, dock doors opened outside schedule, out-of-hours presence, unusual dwell near high-value goods, vehicle movement outside an authorised window. The same person in the same place is routine at 10:00 and an exception at 03:00.
The control objective is therefore an area rule with time in it, and a dwell figure behind each event. What the operator gains is an out-of-hours record that can be reconciled against badge and scheduling systems, so the exceptions worth investigating separate themselves from the ordinary traffic of a working shift.
Related solutions
See Time Limited Area running on your own cameras
Bring a camera stream, a zone and a schedule. We will show you what the model surfaces on your site, not on a demo reel.