Anti-theft alarm controller

Deviceclassification

Anti-theftalarm:

1.Intrusiondetector--changetheintrusioninformationoftheprotectedsiteintoAdevicethattransmitselectronicsignalstotheoutside.Commonlyknownastheprobe,alsoknownasthefront-endequipmentofthealarm.

2.Thesignaltransmissionpart-alsoknownasthechannel,isthechannelthroughwhichthedetector'selectronicsignalsaretransmittedtotheoutside.Therearethreemaintransmissionmethods:wired,wireless,andborrowedwire.Wiredtransmissionisalsocalleddedicatedlinetransmission,whichusesspecialwires,cables,andopticalcablestotransmitalarmsignalstootherplaces.Itsadvantageisstronganti-interferenceabilityandanti-destructiveability.Shortcircuitandopencircuitcanbefoundinstantly.Thedisadvantageisthattheconstructionistroublesome.

Wirelesstransmissionconnectstheintrusiondetectorwiththewirelesstransmitter.Onceanalarmoccurs,itwillsendaradiosignalintotheair.Thewirelessreceiverreceivesthesignalandgeneratesanalarmandinformsthepersonneltodealwithit.Itsadvantagesaresimpleinstallation,strongmaneuverability,multi-pointtransmissionandone-pointreception,longcontroldistanceandlargearea,butthedisadvantageisthatitmaybeinterferedbymorepowerfulradiowaves,lightningandotherstrayelectricplaces.

BorrowedlinetransmissionTelephonelines,powerlines,cabletelevisionnetworksandotherpubliclinescanbeborrowedforalarmsignaltransmission.Theadvantageisthatitiseasytoconstructanddoesnotrequirespecialwiring.Thedisadvantageisthepooranti-vandalability.

3.Anti-theftalarmcontroller-adevicethatcanturntheelectronicsignalofintrusioninformationsentbytheintrusiondetectorintoasoundandlightalarmsignalanddisplay,recordandstoreit.Commonlyusedaredesktop,cabinet,boxandwall-mounted.Butgeneratingalarmsounds,displayingalarmlocations,andstoringandrecordingalarminformationarethebasicfunctionsthatmustbepossessed.

(2)Intrusiondetectors

Pointcontroltype

Thisisaseriesofintrusiondetectorswithasmallwarningrangeandlimitedtolocalcontrol.Thecharacteristicsaresimplestructure,stablework,easyinstallation,lowprice,andthedisadvantageisthatthepreventionisnotstrictenough.

Magneticswitchintrusiondetector

Magneticswitchintrusiondetector:alsoknownasmagneticswitch.Itiscomposedofpermanentmagnetanddryreedpipe.Thedryreedswitchisalsocalledthereedswitch.Itsstructureistoencapsulate2ormoresoftironelectrodesinasealedglasstubefilledwithinertgas.Inthenaturalstate,thetwoelectrodesarenotincontactwitheachother,callednormallyopen,andthoseincontactarecallednormallyclosed.Amongthem,thenormallyopentypeiswidelyused.Installitontheframeofthedoororwindow.Theelectrodeisconnectedtothecontrollerwithawire,andthemagnetisinstalledonthedoororwindowsash.Closethedoorandwindowandmovethemagnettocloseit(whenthemagnetapproachesThesoftironelectrodeismagnetizedandclosedduetotheattractionoftheoppositesex.Whenthecontrollerisopened,thedoorsandwindowsenterthealertstate(orfortification).Atthistime,openthedoorsandwindowsagain,becausethemagnetisfarawayfromthereedtube,theelectrodewillautomaticallybedisconnectedwhenitlosesitsmagneticfield,andthecontrollerwillsendoutanaudibleandvisualalarm.Duetotheeasyinstallation,theresidentscandoitthemselvestocontrolthedoor,balconydoorandallwindows.Inadditiontomagneticswitches,suchasmicroswitches,travelswitches,mercuryswitches,pullswitches,etc.canallbeusedatthesametime.Allkindsofcontactswitchesthatdisconnectthecontactsundertheactionofexternalforceandcanautomaticallyresetaftertheexternalforcedisappearscanbeusedinconjunctionwiththealarmcontroller.Weareaccustomedtousingthisprinciplecollectivelyreferredtoasswitchalarms.Thiskindofalarmhasawiderangeofapplications,andisoftenusedinanti-theftsystemsofvarioussizes.Butitsshortcomingsarethatitisrarelyusedaloneduetothelackoftightnessinthepreventionareaandlocationandlargeloopholes.

Glassbreakintrusiondetector

Usingthepiezoelectriceffectofthepiezoelectricceramicsheet(thepiezoelectricceramicsheetwillgenerateelectricchargeonitssurfacewhenitistwistedanddeformedundertheactionofexternalforce),Canbemadeintoglassbrokenintrusiondetector.

Attachthedetectortothedoorandwindowglass,andconnecttheupperandlowersurfacestothecontrolcircuitwithwires.Oncetheglassishitorbrokenbygravity,thepiezoelectriceffectwillbegenerated.Afterthecontrolcircuitisprocessed,thealarmwillsoundLightalarm.Whetherornottoalarmisdeterminedbythecontrolcircuit.Vibrationscausedbycarspassingby,peoplewalking,windblowing,etc.shouldbeeliminated,andthealarmcanonlybemadewhentheglassishit.Thisreducesalargenumberoffalsealarms.Glassofdifferentthicknessesandspecificationsassmallastensofsquarecentimetersandaslargeasseveralsquaremeterscanbeused.Payattentiontothefirmnessandreliabilityofthepasteduringinstallation,andtheeffectwillbebetterifitisusedinconjunctionwithaswitch-typealarm.Itisthesimplestandmosteffectiveanti-theftalarmsystemtoconnectthedoorlockcontrolinresidentialhouses.

Thevideoscreenintrusiondetectorusesthevideoalarmcontrollertosettheprotectiontargetwithinthecamera'sfieldofview,anditwillberememberedafterbeingconfirmed.Whentheprotectiontargetismovedornewitemsareadded,analarmsignalcanbegenerated.Thesettingissmallandthesizeoftheitemisnotlimited,anditcanbeincreasedordecreasedatanytime.Itisveryconvenienttouse.Ifitisnotenough,youhavetoturnonthecameraaslongasitisarmed,whichwillaffectthelifespan.

Touch-sensitiveintrusiondetector

Thetouchdetectorusuallyusesconductivecloth,conductivefilmormetalwiretoprotectsafes,culturalreliccabinetsorothervaluablesandexhibits.Ifsomeonewantstotouchitintime,itcancauseanalarm.Inthehome,wecandeploydefensesonthebalcony,guardrails,air-conditioningoutdoorunit,etc.,oncesomeoneattemptstoclimb,thealarmcanbeissued.

Inductivedetectorsaremainlyarmedwithmetalwires,andthealertrangecanbeappropriatelyexpanded.Forexample,acordoncanbesetuparoundculturalrelicsmuseumsandshowcasestopreventpeoplefromapproachingandtouchingculturalrelicsexhibitsandencounteringunrulypeople.Thealarmwillpromptthestafftostopit.Theadvantageofthisproductisthatitisflexibleandflexible,andtherangecanbelargeorsmall.Thedisadvantageisthatthesensitivityisoftenadjustedduetothegreaterinfluenceofenvironmentalhumidityandtemperature.

Commonlyusedpointcontrolproductsforentranceandexitcontrolandaccesscontrolsystems

Variouslocks:push-button,touch-typeelectroniccodelocks;magneticcardlocks;ICcardlocks;retinalocks;fingerprintlocks;Voicecontrollock,etc.

Acombinationlockofelectroniclockandmechanicallock.Installthiskindoflockonthedooroftheresidence,usuallyusethekeytoopenthedoor,theownerwillturnonthealarmwhengoingout,closethedoorandlockitandenterthealertstate.Backhome,openthedoorwiththekeyandturnoffthealarm.Inthealertstate,evenifsomeonestealsthekeytoopenthedoor,butthepasswordcannotbedisarmed,thealarmwillstillsoundafterafewseconds.Ifyoutrytobreakthedoorandenterthedoor,youwillimmediatelycallthepolice.

Buildingintercomsecuritydoor:Itisoftenusedforpublicdefenseinunitbuildings.Installelectronicallycontrolledanti-theftdoorsanddoorclosersandcontrolkeyboardsatthedooroftheunitbuilding.Anyresidentoftheunitcanopenthedoorwiththekeytoenterthebuilding,andthedoorcloserwillautomaticallyclosethedoor.Relativesandfriendscanvisitbycontrollingthekeyboard.Afterpressingthecorrespondingsignal,thehost'sindoorintercomwillmakeasound.Aftertheintercomhasconfirmedtheidentity,pressthedoorlockopenbuttontoopentheunitdoorandinvitegueststoenter.Irrelevantpersonnelcannotbeeasilymixedin,sothatthesafetyintheunitisguaranteed.Whengoingout,presstheunlockbuttoninsidethedoortogetinandoutfreely.Aslongasthevideointercomisinstalledonthecontrolkeyboardoutsidetheunitdoor,theownercanseethevisitorhimselfthroughtheLCDscreenduringtheintercom,preventingbadpeoplefromimpersonating.Thiskindofanti-theftdoorwaswidelyusedincoastalopencitiessuchasGuangzhou,Fujian,HainanandShenzhenasearlyastheearly1990s,andthenortherncitiesarealsobeinginstalledandusedoneafteranother.Whenusingthiskindofdoor,youshouldpayattentiontowhethersomeoneyoudon’tknowdeliberatelyfollowupwhenyouopenthedoor.Oncethedoorisfollowedup,itwillposeathreattothesafetyofthisunit.

Othercommonpoint-controlledalarmproducts

Pressurecushion:Puttheculturalrelicsonthepressurecushion,andalarmonceitistakenaway.Putapressurepadunderthecarpet,andtherewillbeanalarmifsomeonemovesaround.Putapressurepadunderthedrivingseatofthecar,andevenifsomeonestealsthecar,youcancallthepolice.Thescopeofapplicationisverylarge.

Anti-theftcamera:Linkedwithotherintrusiondetectors.Oncethereisactivityinthedefensearea,thecamerawillcontinuetotakepictureswhilealarming.Thenumberofphotoscanbepresetandwashedandusedasabasisforsolvingthecase.

Motorvehicleanti-theftalarm:smashingglass,openingthedoor,stealingtires,startingthecarcanalltriggerthealarm.Youcancallinthecar,youcanreporttothepager,oryoucanreporttothealarmcenter.Whenthepolicecenterreceivesanalarm,itcanimmediatelydispatchthecriminaltocatchthecriminal;ifithasalreadydrivenaway,itcantracktherobberythroughtheelectronicmap.

(3)Cordon-controlledintrusiondetectors

Usingtheintrusiondetectorstoarm,formaninvisiblecordon,andanalarmcanoccurwhensomeonecrosses.Commononesare:activeinfrared,passiveinfrared,laser,microwave,induction,etc.

Activeinfraredintrusiondetector

Itconsistsoftwoparts:activeinfraredlighttransmitterandreceiver.Infraredlightisinthespectralrangeinvisibletothehumaneye.Afterthebeamisfocused,aninfraredbeamisformedbetweenthetransceivers.Whensomeonepassesthroughthisinvisibleblockade,theinfraredbeamisinevitablyblockedinwholeorinpart.Thereceivingendwillautomaticallyidentifywhethertoalarmduetochangesintheinfraredbeam.Ifsmallanimals,leaves,sand,rain,snow,fogarecovered,thealarmshouldnotbealarmed,andpeopleorobjectsofconsiderablesizeshouldbecoveredbyanalarm.Itisusedtoblockdoorsandwindowsinfactorywarehouses,toblockpassagesinshoppingmalls,toblockexitsinparkinglots,andtoblockbalconiesathome.Ithasawiderangeofuses.Duetothenarrowbeam,thetransmitterandreceivermustbeinstalledfirmlyandreliably,andshouldnotbeaffectedbygroundvibration,anddisplacementmaycausefalsealarms.Theopticalsystemmustbekeptcleanandpayattentiontomaintenance.

Laserintrusiondetector

Thestructureisthesameasactiveinfrared,themaindifferenceliesinthelightsource.Infraredlaserbeamsarenarrow,noteasytodiverge,andcanformablockadeofthousandsofmeters.Whenusedintheexhibitionhall,theappropriatereflectorcanbeusedtoformafour-wallloopblockadewithasetofdevicestomakethepreventionmoretight.Althoughtherearemanyadvantages,becausethebeamisthin,themirrorismostafraidofdisplacement,sofrequentadjustmentsmustbemadeduringusetoensurepracticalresults.Duetoitsprofessionalism,itisnotsuitableforhomeapplications.

Reflectivepassiveinfraredintrusiondetector

Installapyroelectricdeviceinthemiddleofthefrontofacylinder,andinstallareflectoratthebottomofthecylinder.Passiveinfraredradiatesfromanyobjectatroomtemperature.Thehigherthetemperatureoftheobject,thestrongertheinfraredradiation.Humansarewarm-bloodedanimals,andinfraredradiationisalsothemoststable.Thereasonwhywecallitpassiveinfraredmeansthatthedetectoritselfdoesnotemitanyenergybutonlypassivelyreceivesinfraredraysfromtheenvironment.Thedetectorhasadaptedtotheenvironmentwithinafewsecondsafterinstallation.Oncethehumanbody’sinfraredradiationcomesin,itwillbeheatedbytheopticalsystem.Thedischargedevicegeneratesanabruptelectricalsignalandsendsoutanalarm.Thecordonformedbypassiveinfraredintrusiondetectorscangenerallyreachtensofmeters.Comparedwithactiveinfrared,itiseasiertoinstall,butdonotfacetheheatsourceandstronglightsource,especiallytheairconditionerandheating.Otherwise,theconstantlychanginghotairflowwillcausefalsealarms.

Transceivingsplitmicrowave(microwavewall)intrusiondetector

Microwavesareelectromagneticwaves,invisibletothehumaneye.Separatethetransmitterandreceiveronthegroundwherethecordonisneeded,andaninvisiblewallisformedinthemiddle.Thewallcanbeuptoonemeterthickandtwometershigh.Peoplewalkingthroughitwillabsorborreflectmicrowaves,causingadramaticchangeinthemicrowaveenergyreceivedatthereceivingendandcausinganalarm.Itisusedtoblockpassages,counters,andshelvesinshoppingmallsandweaponsandammunitiondepots.Itiseffectivetoblockgatesandcrossingriversandlakesinthevillaarea,andblockbalconiesandexteriorwindowsinresidences.Butinoutdoorapplications,besuretopayattentiontodogsoranimalslargerthandogscrossingtheblockadetoavoidfalsealarms.

Inductiveintrusiondetectors

Theinductiveintrusiondetectorsareusedtoblockfishpondsandthesurroundingsofwarehouses,whichcanformaloopwarningline,whichisveryeffectiveandconvenienttouse.