Dab tsi yog CCTV vs koob yees duab kev ruaj ntseg?**
** Taw qhia: Nkag siab qhov txawv
Kev soj ntsuam video ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb thiab kev nyab xeeb hauv ntau qhov chaw. Txawm hais tias nws tau saib xyuas thaj chaw pej xeem, tiv thaiv kev lag luam, lossis tiv thaiv tus kheej cov khoom ntiag tug, kev siv lub koob yees duab saib xyuas tau dhau los ua ntau dua. Ob lo lus siv feem ntau hauv thaj tsam ntawm kev soj ntsuam video yog CCTV thiab koob yees duab kev ruaj ntseg. Txawm hais tias cov ntsiab lus no feem ntau siv sib hloov, muaj qee qhov sib txawv ntawm ob. Hauv tsab xov xwm no, peb yuav delve rau hauv lub ntiaj teb ntawm CCTV thiab lub koob yees duab kev ruaj ntseg, tshawb nrhiav lawv qhov sib txawv, kev ua haujlwm, thiab kev siv los muab kev nkag siab zoo ntawm cov cuab yeej soj ntsuam no.
Nkag siab CCTV (Closed-Circuit TV)
CCTV, luv luv rau Closed-Circuit TV, yog hais txog lub kaw lus uas pab tswj kev saib xyuas cov yeeb yaj kiab los ntawm lub network ntawm lub koob yees duab, cov kaw lus, thiab cov saib xyuas. Lub luag haujlwm tseem ceeb ntawm CCTV yog tias nws ua haujlwm nyob rau hauv lub kaw lus kaw, txhais tau hais tias cov yeeb yaj kiab uas tau ntes los ntawm lub koob yees duab tsis tau tshaj tawm rau pej xeem tab sis nws hloov mus rau qee qhov txwv ntawm cov saib lossis cov khoom siv cia. Qhov kaw qhov xwm txheej ntawm CCTV systems ua rau lawv zoo tagnrho rau cov xwm txheej uas yuav tsum tau saib xyuas tus kheej.
CCTV: Functionalities thiab Cheebtsam
CCTV koob yees duab muaj nyob rau hauv ntau hom thiab qauv, txhua tus tsim los ua kom haum rau cov kev cai tshwj xeeb saib xyuas. Lawv tuaj yeem muab faib ua peb hom: analog, digital, thiab network koob yees duab.
Analog CCTV koob yees duab, ib txwm siv ntawm cov cuab yeej soj ntsuam, ntes cov duab video thiab xa ncaj qha mus rau cov cuab yeej kaw, xws li video cassette recorder (VCR) lossis digital video recorder (DVR). Cov koob yees duab no feem ntau muaj kev daws teeb meem tsawg thiab xav tau kev sib txuas ntawm lub cev rau kev xa cov teeb liab.
Cov koob yees duab CCTV, ntawm qhov tod tes, hloov cov duab thaij duab rau hauv cov teeb liab hauv lub koob yees duab nws tus kheej. Cov ntaub ntawv digital no yog tom qab ntawd xa mus rau lub cuab yeej cia, xws li lub khoos phis tawj lossis lub network cia, rau kev kaw thiab tshuaj xyuas. Cov koob yees duab digital muab kev daws teeb meem siab dua thiab cov duab zoo dua piv rau cov koob yees duab analog.
Cov koob yees duab network, tseem hu ua IP koob yees duab, siv lub zog hauv internet los xa cov duab video. Cov koob yees duab no txuas mus rau IP network lossis internet, ua rau cov neeg siv nkag mus rau qhov nyob lossis kaw cov vis dis aus los ntawm kev siv cov khoom siv xws li smartphones, ntsiav tshuaj, lossis khoos phis tawj. Network koob yees duab muab kev yooj yim dua thiab scalability raws li lawv tuaj yeem yooj yim ua ke rau hauv network infrastructure uas twb muaj lawm.
Sib nrug los ntawm cov koob yees duab, lwm yam khoom ntawm CCTV system muaj xws li saib, kaw, thiab cables. Cov saib yog siv los tso saib cov yeeb yaj kiab nyob lossis kaw, thaum lub kaw lus khaws cov ntaub ntawv yees duab ntes. Cables yog qhov tseem ceeb rau kev xa cov teeb liab ntawm lub koob yees duab thiab cov cuab yeej kaw.
Lub koob yees duab kev ruaj ntseg: Tshawb nrhiav cov hauv paus
Lo lus "cov koob yees duab kev ruaj ntseg" yog lub tswv yim ntau dua thiab dav-spectrum piv rau CCTV. Nws suav nrog ntau yam kev soj ntsuam cov cuab yeej tsim los saib xyuas thiab tiv thaiv ntau thaj chaw lossis cov khoom muaj nqis. Thaum CCTV yog ib hom kev ruaj ntseg lub koob yees duab, lo lus "lub koob yees duab kev ruaj ntseg" tuaj yeem xa mus rau txhua yam khoom siv los thaij duab video rau kev ruaj ntseg.
Tsis zoo li CCTV, lub koob yees duab kev ruaj ntseg tuaj yeem ua haujlwm hauv ob qho tib si kaw thiab qhib. Cov kaw lus kaw hais txog kev teeb tsa uas cov duab thaij duab tsis tuaj yeem siv tau rau pej xeem, zoo ib yam li CCTV. Qhib cov tshuab, txawm li cas los xij, xa mus rau cov kev teeb tsa uas cov yeeb yaj kiab tuaj yeem nkag tau los ntawm pej xeem, xws li cov koob yees duab streaming kev ruaj ntseg siv rau cov chaw pej xeem.
Lub koob yees duab kev ruaj ntseg: Kev ua haujlwm thiab cov khoom siv
Thaum nws los txog rau lub koob yees duab kev ruaj ntseg, cov kev ua haujlwm thiab cov khoom sib txawv tuaj yeem sib txawv raws li kev siv thiab ib puag ncig. Qee hom koob yees duab kev ruaj ntseg muaj xws li:
1. Dome koob yees duab: Dome koob yees duab muaj npe tom qab lawv lub tsev zoo li dome. Cov koob yees duab no muaj kev pom dav dav thiab feem ntau siv rau hauv qhov chaw sab hauv tsev. Lub dome-shaped tsim kuj ua rau nws nyuaj rau cov tib neeg los txiav txim qhov kev taw qhia lub koob yees duab taw tes.
2. Bullet Cameras: Cov koob yees duab mos txwv, muaj npe rau lawv cov duab cylindrical zoo nkauj, feem ntau yog siv rau kev soj ntsuam sab nraum zoov. Cov koob yees duab no tau yooj yim mountable thiab feem ntau muaj xws li weatherproof nta.
3. PTZ koob yees duab: PTZ koob yees duab, luv luv rau Pan-Tilt-Zoom koob yees duab, muab lub peev xwm los tswj cov kev taw qhia, lub kaum sab xis, thiab zoom ntawm lub koob yees duab. Cov koob yees duab no feem ntau yog siv rau hauv cov xwm txheej uas xav tau kev saib xyuas thiab taug qab.
4. Lub Koob Yees Duab Thermal: Cov koob yees duab cua sov ntes cov cua sov kos npe ntau dua li pom lub teeb pom kev zoo, ua rau lawv siv tau zoo thaum lub teeb pom kev zoo tsis zoo lossis tsis muaj nyob. Cov koob yees duab no feem ntau siv rau kev ruaj ntseg hauv ib puag ncig thiab kev soj ntsuam hauv qhov tsaus ntuj.
Hais txog cov khoom, cov koob yees duab kev ruaj ntseg feem ntau suav nrog cov duab sensors, lo ntsiab muag, infrared illuminators, thiab kev xaiv kev sib txuas. Cov duab sensors ntes cov duab video, thaum lo ntsiab muag txiav txim siab qhov chaw saib thiab focal ntev. Infrared illuminators ua rau muaj peev xwm pom kev hmo ntuj, tso cai rau cov koob yees duab los ntes cov duab meej hauv qhov chaw qis lossis tsaus ntuj. Cov kev xaiv kev sib txuas tuaj yeem sib txawv thiab suav nrog kev xaim, wireless, lossis hybrid configurations.
Cov Distinctions: CCTV vs Security Cameras
Tam sim no peb tau tshawb xyuas cov haujlwm thiab cov khoom siv ntawm ob qho tib si CCTV thiab lub koob yees duab kev ruaj ntseg, cia peb sau cov ntsiab lus sib txawv ntawm ob:
1. System Hom:CCTV ua haujlwm nyob rau hauv lub kaw lus kaw, thaum lub koob yees duab kev ruaj ntseg tuaj yeem ua haujlwm hauv ob qho tib si kaw thiab qhib.
2. Public Accessibility:CCTV footage tsis tuaj yeem siv tau rau pej xeem, thaum lub koob yees duab kev ruaj ntseg tuaj yeem muab pej xeem nkag mus rau cov duab video hauv qee kis.
3. Kev xa mus:CCTV koob yees duab xa cov yeeb yaj kiab video mus rau qee tus neeg saib lossis cov khoom siv cia. Lub koob yees duab kev ruaj ntseg tuaj yeem xa cov duab mus rau ntau yam kev kaw lus lossis cov khoom siv streaming, suav nrog hauv internet.
4. Flexibility:Cov koob yees duab kev ruaj ntseg muaj ntau yam kev xaiv thiab yooj yim ntawm cov koob yees duab hom, kev sib txuas, thiab kev ua kom muaj peev xwm. CCTV systems muaj ntau tus qauv tsim thiab kev teeb tsa.
5. Npaj siv:CCTV feem ntau yog siv rau hauv qhov chaw ntiag tug, xws li tsev, chaw lag luam, lossis chaw txwv. Cov koob yees duab kev ruaj ntseg, ntawm qhov tod tes, tuaj yeem pom nyob rau hauv ob qho tib si ntiag tug thiab pej xeem qhov chaw, xws li txoj kev, khw, lossis chaw thauj mus los.
Xaus: CCTV thiab Lub Koob Yees Duab Kev Ruaj Ntseg Tshaj Tawm
Hauv kev xaus, thaum cov ntsiab lus CCTV thiab cov koob yees duab kev ruaj ntseg feem ntau siv sib hloov, lawv pom muaj qee qhov sib txawv. CCTV hais tshwj xeeb rau kev soj ntsuam kev ua haujlwm hauv cov tes hauj lwm kaw, muab kev saib xyuas tus kheej muaj peev xwm. Ntawm qhov tod tes, cov koob yees duab kev ruaj ntseg suav nrog ntau pawg ntawm cov cuab yeej saib video uas tuaj yeem ua haujlwm hauv kaw lossis qhib kaw.
Kev nkag siab txog kev ua haujlwm, cov khoom siv, thiab qhov sib txawv ntawm CCTV thiab lub koob yees duab kev ruaj ntseg yog qhov tseem ceeb rau kev txiav txim siab paub thaum nws los txog rau kev siv cov tshuab soj ntsuam video. Los ntawm kev txiav txim siab txog kev soj ntsuam tshwj xeeb thiab ib puag ncig kev siv, cov tib neeg thiab cov koom haum tuaj yeem xaiv cov cuab yeej tsim nyog tshaj plaws kom tau raws li lawv cov kev xav tau kev nyab xeeb thiab kev nyab xeeb.
