The smart safety harness answers one question per worker: is each person clipped in correctly? It does not answer the management question behind it — who watches dozens of people at once? Plants that run this well without adding staff do three things: grade the work faces, assign an alarm recipient to each grade, and bring every point onto one screen.
Grade the faces: fixed, mobile, sporadic
The grading rule is what the worker does after clipping in.
- Permanent fixed positions — silo tops, inspection platforms. The worker barely moves after anchoring, so automatic detection of unclipped hooks and low-anchor use is enough.
- Mobile work faces — equipment overhaul, piping installation. Workers move between points; watch for gaps when the double hooks swap over.
- Sporadic one-off climbs — lamp replacement, leak patching. The easiest to miss. The monitor judges height from its barometric calibration and enters monitoring state automatically above two metres, so supervision does not rely on verbal reporting.
Three grades, three ways of watching — that is how a small safety team's time goes where it matters. Grading follows the nature of the work face, not the person: the same crew may be on a fixed platform today and in an overhaul face tomorrow.
Bind alarm recipients to crews and shifts
Alarms from dozens of faces cannot all pile onto one person. Before work starts, bind recipients to crew and time slot: day shift to the crew leader on duty, night shift to the duty safety officer — whoever holds the shift receives the alarms. At handover, unacknowledged alarms are reviewed and handed over face to face; a "read but unanswered" alarm must not survive overnight.
The Yunku multi-state harness monitor (SBM3000 series) pushes detection results over 4G to the bound recipient. When people change, the binding changes with them, so alarms never land where nobody is looking.
One screen for all the points
Before the shift, roll call on the screen: who is online, on which type of face, any mis-clipping. During work, watch the backlog of unacknowledged alarms. After work, export the records by crew. The management radius changes from running around the site to looking at one place — only then can dozens of faces actually be supervised.
Will an unreported temporary climb be missed? No. The monitor judges height from its barometric calibration and enters monitoring state automatically above two metres. Verbal reporting is a management habit, not a condition the equipment depends on.