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Project:LHS Graphs and Visualizations: Difference between revisions
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Project:LHS Graphs and Visualizations (view source)
Revision as of 11:58, 18 December 2010
, 18 December 2010→Space occupancy
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I have located two Laser Diode Retroreflective Sensors in our stores which I intend to use to monitor space occupancy by having the beams cross the main doorway. The beams will be staggered so that direction (arriving, leaving) can be determined by the order in which the beams are broken. I was thinking of mounting them at waist height. | I have located two Laser Diode Retroreflective Sensors in our stores which I intend to use to monitor space occupancy by having the beams cross the main doorway. The beams will be staggered so that direction (arriving, leaving) can be determined by the order in which the beams are broken. I was thinking of mounting them at waist height. | ||
* This will probably get caught out by clusters of people: | * This will probably get caught out by clusters of people: --[[81.105.17.61]] | ||
** We only need an approximate count | ** We only need an approximate count | ||
** The doorway is narrow so it's unlikely | ** The doorway is narrow so it's unlikely that two peoples steps will overlap, if they do - see point above | ||
** Most of the time people won't arrive in clusters | ** Most of the time people won't arrive in clusters | ||
* Can we detect some other event such as the door opening after a prolonged lights-out period to force the count to zero? | * Can we detect some other event such as the door opening after a prolonged lights-out period to force the count to zero? --[[81.105.17.61]] | ||
** Yes, we can fuse the sensor data with the door/lights data if we get large amounts of drift - but I don't plan to just yet | ** Yes, we can fuse the sensor data with the door/lights data if we get large amounts of drift - but I don't plan to just yet | ||
