Nrog rau qhov nrov ntawm cov txuas hniav wireless, elevator saib xyuas tshuab kuj tau siv ib qho tom qab. Kab lus no yuav piav qhia meej yuav ua li cas saib xyuas lub elevator thiab yuav ua li cas rau nruab wireless txuas rau hauv of elevator shafts.
1. of the elevator video surveillance
of the elevator yog ib qho tseem ceeb kaw pej xeem cheeb tsam ntawm ib lub tsev thiab ib tug tseem ceeb channel rau nce thiab nqis nkag. Kev soj ntsuam video of the elevator plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm ruaj ntseg ntawm tag nrho cheeb tsam thiab yog qhov tseem ceeb thiab tseem ceeb. Kev soj ntsuam video hauv of the elevator tuaj yeem nkag siab qhov xwm txheej hauv lub tsheb of elevator hauv lub sijhawm tiag tiag kom ntseeg tau tias muaj kev nyab xeeb ntawm cov neeg caij tsheb.
Of elevator soj ntsuam video kis tau tus mob yuav muab faib ua wired thiab wireless.
Kev xa xov hluav taws xob: Cov kev ua haujlwm of the elevator nrog cable yog siv, thiab cov khoom siv nrog cable raug puas tsuaj loj thaum siv, thiab nws lub neej ncua ntawm ib mus rau ob xyoos. High-rise of the elevator cables muaj qhov xav tau siab rau lub zog tensile thiab hluav taws xob tsis zoo, txhawm rau tiv thaiv cov cable los ntawm kev ncab thiab deformed nyob rau hauv nws tus kheej qhov hnyav, ua rau impedance mismatch thiab cuam tshuam los ntawm attenuation ntawm lub teeb liab-rau-suab nrov piv ntawm cov teeb liab video. . Nws yog qhov nyuaj los hloov cov kab txuas ntxiv dua, lub sijhawm tsim kho yog qhov ntev, thiab tus nqi ntawm kev hloov cov kab txuas nrog kuj yog siab.
Wireless kis tau tus mob: Lub wireless kis tau tus mob txais ib tug point-to-point txoj kev. Ib qho kis tau tus mob yog ntsia rau ntawm lub tsheb thiab ib qho chaw txais tau nruab rau ntawm qhov kawg ntawm lub elevator ncej. Cov ntaub ntawv tuaj yeem xa mus dawb thaum lub tsheb of elevator tsiv. Cov khoom siv sib kis tau yooj yim yog qhov yooj yim rau nruab thiab muaj lub neej ntev ntawm tsawg kawg 3 xyoos, thiab cov bandwidth ua tau raws li kev sib kis ntawm kev soj ntsuam video siab.
