ADVER ISEMEN


ADVERTISEMENT FEA


FEAT RE ATURE


COVER


COVER STORY


PAPIR – A NEW APPROACH T O CY DETECTIO N


OCCUPANCY RichardThornton, capabi ties of the latest Passive Infrared sensors (PIR) and how t ey are f ci


Richard Thornton, Managing Director of Panasonic ElectricWo capabilities of the l test Passive


and how


nagingDirector of Panasonic Electric Works UK explores the advanced ared sensors (


targe allow


get are rea tobemuchmore owing slightmov


WorksUKexplores the advance d owthey are facilitating lighting control


ng l ght ng cont ol re sensitive ve so ovement detection.An


example of a typical applicationcouldbe the sensormountedina toilet cubicle todetect occupancy.The standard the entry


rddetectionring detects


ovement.The same scenariowouldapply to detectionof anoccupiedbed. The standard


slightmovement detectionarea detects the presence of the occupant evenwithveryvery little mov


mov ovement to andfro reathingmov


slightmovement detectionarea candetect the slight bre


rddetectionringdetects the romthe bedwhile the re


ove


sensing are appro


overage vements of the occupie r


thatwouldnormallynot be detected. The ‘Hammerhead’ PIRhas a rectangular rea,with88s


roximately a4:1 rat


better cov rage cov


basic requirement for building automation originates in the fact that there is a need to identify the presence of people in the controlled areas. The solution to this problem is to use some form of occupancy sensor to detect the presence of people in an area. Theoccupancysensor type


A pemostwidelyuse


thebuildingautomationindustrystryisthePIR (Pa


Passive electro spe


mov owev ot h ow


pectruminwhichra ove


roblematicwhencompareparedtotheusual miniaturisationof


Howeve pro


ofotherelectro structure ro ri sedin


veInfrarerared)sensor.PIRmotionsensorsuse romagneticra


radiationint elowinfrarerared radiationemittedbyhuman


vement isidentifiedusingaPIRdetector. verminiaturisationof R ev


ofPI devicescanproveoverov roniccontroldev


Many of theseproblems arise due to the re andcharacteristics of the sensor


device sincePIRmotiondetectors use thermal sensors todetect the small temperature incre


ra exposedto ra rcesare


detection/eliminationof any returning light sourc


lens arrayneededfor the focus and re


reincre


tothenecessary theov


necessitytopro thelow


owe


large pow


gerpro roj


overaverall size Of equal imp ort crc


westquiescent curre re


reasinglydifficult tomanufacture ry tolera .


rancelimits, thesmaller rtanceis the


roducecontrolro ircuits that take rentspossible.


utilisedinastandbymodeis very smallbut ifa oject is consideredthecumulative kenbysomehundre


Obviouslyonanindividualbasis thepower very


ow ower take reds (or ev even thousands)ofdevices canbeveryverysignificant. 12 SPR 12 SPRIING 201 2017 | ENERG MANAGEMEN ENERGY MANAGEMENT ke re re


reasepresentwhenthe sensor element is radiation. Inaddition, the required


re evices. the deve


For yearsPanasonicR&Dhas investiga velopingbui


ve


lding automationmarkets gated


andset intoplace adesigncriteria thathas seenanumber ofminiature pro


roducts successfully developed.Ago example–thePaPIRsensor–combines miniaturisationwithpra


ra ge cov ro


re self-containedPIR good


ractical specifications


that allows awholehost ofnewapplications. The company’sPaPIRsensor range overs detectiondistances from2mthro andbeyo move


genera ral areamov


internalbuildingcon ro De incorridorsmayreq re


oo


ge re


ralare ew


repeatedslightmov sheltereteredaccommod checkare


ec ft


owe vers relessdet


oftendifficultenv werversionsallow


ff kenfro trol.Detectionofmov


whilstoccupationofaroommaycall fo genera


pushthesensorto fferre anof pow wire ra


draintake


oorwaysfo off


fora roughto 12m


yondwithversions todetect slight body vements, focusedspot areas andge ovement.This is to cov


re uirealongdistanceversion ro


reatype.Newapplications suchas ove


reasindoorway forcountingpurposes offe reliabledetectionwithin nvirovironment.Specialultra-lowra ow owlonglifeuseinre ote


vementdetectionwithina odationenvironvronmentorspot po


po fe h powepowersourc rce. remot te


FournewPaPI productshave beenreleased byPanasonic inord


etectionsystsystemswithminimalcurre romt e ow R ro


complement the existing ra ge re generalmov ove


rder to expandand range:


The ‘Saturn’ PIR- This unithas a lens that has twodifferent detectionareas.Anouter ring offers ge


rangement andthis allows the ow vement detectionwitha


48segment ring that gives standarddetection sensitivities.The inner ringhas 36segments in a denser arra ge


Panasonic Electric Works UK www.panasonic-electric-works.com/uk


www.panasonic-electric-works.com/uk T: 01908 231555


/ ENERGYMANAGEMENT ENERGY MANAGEMENT rent ot


over awide area of ove vers


vement Figure 1: Figure 1:


Panasonic’s new range of PaP R products


anasonic’s new range of PaPIR products


io. This allow egments, in


a standardlens. Theuse of cov andsplitmasks ext


sensor inspecific applications.


The ‘LenslessPinhole’ PIRdoesnot use a specific lens but ra cov


rather uses thenatura overage


achieve ina very


detectionov


of the lens a very flath ra


contact ismadewithin roughthe are ral are rea


ge of the sensor tobeutilisedto achieve over small range


ve


ge.Due to the absence eadarea canbe


vedmaking the sensor ideal formounting ry confinedspace orwhere dire


themounting fra rect


re rame.A


typical applicationmaybe touse the sensor in adoor frame to identify any occupantmoving thro


limitedto appro


rea. The detectiondistance is roximately2mhowev


course is usually gre so the sensor canre


ove a cert ever this of


reater thana doorfrarframe and relia blydetectmovement .


The ‘Pet Immunity’ PIRhas aninternal lens mask that canallow abov


owdetectionofmove ov rtainheight but avo below owthis leve vement voidanydetection vel.This canbe veryusefulwhen


detectionbypets but a owing re detectionofhumanoccupancy.


ge m ve


usedindomestic applications tohelpavoid llow


reliable


As canbe seenmanynewversions of the successful PaPIRsensor range are continually being developedor i proved.While thehigh demandforhighre PIRS exists there


reliability, self-contained, re is plenty of scope to continu e


product andcontinue t topushthe technical b


expectations andnew


omeet customers’ oundaries of the


ewrequirements. re ows amuch


overage of corridors, office areas and ge of specific areas thanis possiblewith overingmasks


xtends theusefulness of the


ry andleaving of anoccupantwhile the re


PAPIR – A NEW APPROACH TO OCCUPANCY DETECTION


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36