Large open spaces like warehouses, gymnasiums, and open-plan offices present challenges for PIR sensors. The sheer size and often high ceilings make standard sensors ineffective.<\/p>\n
Most PIR sensors have a maximum range of 10-15 meters. In a large warehouse, this covers only a small fraction.<\/p>\n
Mounting sensors on high ceilings (10-20m) creates large blind spots directly below and reduces effective range.<\/p>\n
Large spaces often have temperature variations (near doors, skylights) that can cause false triggers.<\/p>\n
Racking, machinery, and stored materials create shadows and blind spots.<\/p>\n
The most straightforward solution: use multiple sensors with overlapping coverage. Calculate coverage areas and place sensors to eliminate blind spots.<\/p>\n
Use sensors with curtain lenses designed for long distances (up to 30-40m). These have a narrow field but can cover long aisles.<\/p>\n
For high ceilings, use sensors specifically designed for ceiling mounting with 360\u00b0 coverage. These have patterns that cover a circular area below.<\/p>\n
Combine PIR with other technologies:<\/p>\n
Divide the space into zones, each with its own sensor. This also helps identify where motion occurred.<\/p>\n
For a warehouse 50m \u00d7 30m with 10m ceilings:<\/p>\n
A warehouse needed to detect personnel for safety lighting. Using 12 long-range PIR sensors with curtain lenses mounted along the ceiling, they achieved 95% coverage of the floor area. Sensors were zoned so lights turned on only in occupied zones.<\/p>\n
Large spaces require careful planning and multiple sensors. Use the right lens for the application and consider combining technologies.<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction Large open spaces like warehouses, gymnasiums, and open-plan offices present challenges for PIR sensors. The sheer size and often high ceilings make standard sensors ineffective. Why Large Spaces Are Challenging 1. Limited Range Most PIR sensors have a maximum range of 10-15 meters. In a large warehouse, this covers only a small fraction. 2. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-3428","post","type-post","status-publish","format-standard","hentry","category-troubleshooting"],"blocksy_meta":[],"yoast_head":"\r\n