Proximity Alert
An alert generated when two or more tracked objects come within a defined distance of each other. Used for collision avoidance (warning when vehicles approach pedestrians), social distancing (maintaining separation), contact tracing (recording interactions), and operational safety. Threshold distances configurable based on application requirements.
Notification generated when two or more tracked objects approach within defined distance threshold, used primarily for safety applications preventing collisions. Most common industrial proximity application given high accident frequency and severity. (2) Vehicle-vehicle alerts - warning equipment operators when vehicles approaching each other (threshold 5-10 meters). (3) Pedestrian-hazard alerts - warning workers approaching dangerous zones (moving machinery, overhead cranes, hazardous materials). (4) Equipment-equipment alerts - preventing collisions between mobile equipment and fixed assets. Mobile geofences move with objects. (2) Detection rules - specifying which object combinations trigger alerts. (3) Alert actions - defining responses at different threat levels: advisory warnings (visual/audible alert, 3-8 meter distance), critical warnings (louder alert, speed reduction signal, 1-3 meters), emergency actions (automatic braking if supported, <1 meter). (4) Update rate requirements - proximity detection requires 5-10 Hz position updates for fast-moving vehicles versus 0.1-1 Hz sufficient for general asset tracking. Requires reliable positioning (>95% detection rate), adequate update rates (5-10 Hz), proper infrastructure coverage. (3) Response time - system latency must remain <500ms. Proximity alert benefits: (1) Accident prevention - 40-70% reduction in forklift-pedestrian incidents. (2) Reduced severity - incidents typically less severe due to reduced speed. (3) Near-miss data - capturing near-miss events provides leading indicator for safety improvement. (4) Behavioral changes - presence of system encourages safer behaviors. (5) Liability reduction - demonstrating proactive safety measures. Effective proximity alert systems require adequate positioning accuracy (30-100 cm), high update rates (5-10 Hz), low latency (<500ms), complete coverage, proper configuration, and comprehensive training.