Incamake ya TL; DR:Sisitemu za kamera za CCTV ku bakora akazi ko gucunga umutekano zisaba guhitamo neza ubwoko bwa kamera, ubushobozi bwo kuzigama, uburyo bwo kubika amakuru, n'ibikorwa remezo by'umuyoboro. Sisitemu zishingiye kuri IP nizo ziganza isoko aho ubushobozi bwa 4K bugenda buhinduka ubusanzwe. Ibintu by'ingenzi bigomba kwitabwaho birimo umubare wa kamera, ibisabwa mu gukoresha insinga, guhitamo NVR/VMS, no kubahiriza amategeko agenga igenzura ry'aho utuye. Ibisanzwe byo gushyiramo kamera biri hagati ya $500 na $2,000 kuri buri kamera harimo no kuyishyiraho.

Intangiriro: Ikoranabuhanga rya CCTV mu by'umutekano w'ubucuruzi

Televiziyo ikoresha urujya n'uruza rw'amajwi (CCTV) yerekeza ku buryo bwo kugenzura amashusho bwohereza ibimenyetso ku bagenzuzi runaka aho kohereza amajwi ku mugaragaro. Isoko rya CCTV ku isi ryarenze miliyari 55 z'amadolari mu 2026, aho kamera za IP zafashe 78% by'isoko nk'uko bigaragazwa n'ibiro ntaramakuru.Ubushakashatsi ku masokoBa rwiyemezamirimo bagomba gusobanukirwa ibipimo bya tekiniki, ibisabwa mu gushyiraho, n'amategeko agenga iyubahirizwa ry'amategeko iyo bagena uburyo bwo kugenzura.

Sisitemu za CCTV zigezweho ntizitanga gusa ubugenzuzi bw'umutekano. Isesengura rigezweho rituma abantu babara, bamenya plaque, kandi bamenya aho binjira. Guhuza na sisitemu zo kugenzura ubwinjiriro n'iz'itangazo bitanga imiterere y'umutekano yuzuye.

Ubwoko bwa Kamera za CCTV n'Imikoreshereze yazo

Kamera zo mu cyumba cyo kugenzura imbere mu nzu

Kamera zo mu cyumba cy’inyuma zifite agace k’inyuma gatwikira icyerekezo cy’indorerwamo. Izi kamera zijyanye n’ahantu hacururizwa, ibiro byo mu cyumba cy’inyuma, n’inzira z’amahoteli. Inzu zirinda kwangirika zihangana n’ingufu zigera kuri joules 50. Igishushanyo mbonera cyazo kirinda ivumbi ryiyongera no kugerageza kuziba.

Kamera z'amasasu zo kurinda uruziga

Kamera z'amasasu zitanga uburyo bugaragara bwo kwirinda ikirere hamwe n'aho zifungira hanze. Izi kamera zikunze kugira uburebure burebure bwo kureba kure. Udukingirizo twa IP67 turinda umukungugu no kwibira mu mazi. Amatara ya IR atuma umuntu abona nijoro kugeza kuri metero 100 bitewe n'imiterere y'icyitegererezo.

Kamera za PTZ zo kugenzura neza

Kamera zo mu bwoko bwa Pan-Tilt-Zoom zitanga ubwikorezi bwa dogere 360 ​​hamwe n'ubushobozi bwo gukurura amashusho kuva kuri 20 kugeza kuri 40x. Abashinzwe umutekano bagenzura cyane aho kamera iherereye kugira ngo bakurikirane abantu. Uburyo bwo gukurikirana amashusho bwikora bukurikira ibintu byimuka mu duce twagenwe. Kamera za PTZ zikenera gushyirwaho no gutegurwa cyane kuruta kamera zihoraho.

Amabwiriza agenga CCTV n'ubuziranenge bw'ishusho

Ibisabwa ku bikorwa remezo bya interineti na Bandwidth

Guhindura PoE no Gutanga Ingufu

Ingufu kuri Ethernet (PoE) zohereza amakuru n'amashanyarazi binyuze mu nsinga imwe ya Cat5e/Cat6. IEEE 802.3af itanga 15.4W kuri buri muyoboro, ihagije kuri kamera zisanzwe. IEEE 802.3at (PoE+) itanga 30W kuri kamera za PTZ n'ibishyushya.IEEE 802.3bt isanzweifasha 60-90W gukoresha ingufu nyinshi.

Imibare y'ubugari bw'umuyoboro n'ububiko

Ibisabwa kuri bandwidth biterwa n'uburyo bwo kureba amashusho, umuvuduko wa frame, na codec yo gukanda. Gukanda H.265 bigabanya bandwidth ho 50% ugereranije na H.264. Kamera ya 4MP kuri 15fps ikenera hafi 4-6 Mbps. Guhinduranya amakuru kuri network bisaba ubushobozi buhagije bwo gufata amashusho ya kamera ahuriweho nta gutakaza paki.

Ingamba zo kubika no kubika amashusho

Amashusho yo kubika amashusho ya mudasobwa (NVR) na sisitemu yo gucunga amashusho (VMS) kugira ngo haboneke ibimenyetso. Igihe cyo kubika amakuru akenshi kiba hagati y'iminsi 30-90 bitewe n'amategeko agenga amakuru n'isuzuma ry'ingaruka. Kubika amashusho ku makarita ya SD bitanga ubufasha mu gihe umuyoboro ubuze. Kubika amashusho mu bicu bitanga ubushobozi bwo kongera gukoresha amakuru hanze y'aho ukorera ariko bisaba kohereza amakuru menshi.

Uburyo bwiza bwo gushyiraho ibikoresho ku ba rwiyemezamirimo

Gushyira kamera mu mwanya wayo bikurikiza itegeko rya metero 20: shyira kamera mu ntera ya metero 20 uvuye aho umuntu areba kugira ngo amenye neza isura ye.Ingingo ya 725 ya NECigenga imiyoboro y'amashanyarazi ifite ingufu nkeya. Igipimo cy'umuyoboro w'amazi ntikigomba kurenga 40% kugira ngo ubushyuhe bushire neza. Gushyira hasi no kurinda umuyaga birinda kwangirika kw'ibikoresho biva ku nkubi z'amashanyarazi.

Ibibazo Bikunze Kubazwa

Ni irihe tandukaniro riri hagati ya sisitemu za NVR na DVR?

NVR (Network Video Recorder) ikoresha uburyo bwa digital IP camera streams binyuze mu miyoboro ya interineti. DVR (Digital Video Recorder) ihindura ibimenyetso bya kamera ya analog muri digital format. Sisitemu za NVR zitanga ubushobozi bwo kureba neza, zoroshye kwagura, kandi zikagira akamaro ko kuzikoresha kure. Inzego zigezweho zikoresha cyane cyane ikoranabuhanga rya NVR.

CCTV isaba ahantu hangana n'aho kubika ibintu?

Ibisabwa mu kubika ibintu ukoresheje formula: Umubare wa Kamera × Bitrate × Amasaha yo gufata amashusho × Iminsi yo kubika ibintu. Kamera ya 4MP ifata amashusho buri gihe kuri 4Mbps isaba hafi 42GB ku munsi. Iminsi 30 yo kubika amashusho kuri kamera 16 ikenera ubushobozi bwo kubika 20TB. Gufata amashusho hifashishijwe ikoranabuhanga bigabanya ibisabwa mu kubika ibintu ho 40-60%.

Ni izihe nsinga zisabwa kugira ngo ushyiremo kamera za IP?

Umugozi wa Cat5e ufasha kamera kugera kuri metero 100 kuri 100Mbps. Umugozi wa Cat6 ufasha guhuza kamera ya 1Gbps kuri kamera zifite sensor nyinshi na 4K. Gushyiramo ibikoresho byo hanze bisaba insinga zifite imiterere ya UV cyangwa izitwikirwa mu buryo butaziguye zifite uburinzi bukwiye.Igipimo ngenderwaho cya TIA-568igena ibisabwa mu gushyira insinga mu bikorwa by'ubucuruzi.

Ese kamera za CCTV zikora nta interineti ihari?

Sisitemu za NVR zo mu gace zikora ku giti cyazo nta interineti. Guhuza interineti bituma umuntu areba kure, gutanga amakuru kuri telefoni zigendanwa, no kubika amakuru mu bicu. Sisitemu zisanzwe zikomeza gufata amajwi mu gihe interineti ibuze. Gukurikirana no gutanga amakuru hanze y'aho ukorera bisaba ko interineti ihuzwa.

Ni ibihe bintu by'urumuri bigira ingaruka ku mikorere ya kamera?

Ibipimo by'urumuri bike bigaragaza urugero rw'urumuri rukenewe kugira ngo habeho amashusho akoreshwa. Kamera z'amabara ubusanzwe zikenera 0.1-0.5 lux kugira ngo zikore nijoro. Amatara ya IR atanga urumuri rutagaragara rwa infrared kugira ngo umuntu abone neza nijoro. Ikoranabuhanga rya Wide dynamic range (WDR) rikemura ibibazo by'urumuri rw'inyuma. Kamera z'inyenyeri zigira amashusho y'amabara mu mwijima hafi ya wose (0.001 lux).

Umwanzuro: Kugaragaza sisitemu za CCTV zikora neza

Ibisobanuro bya sisitemu ya CCTV bisaba gusobanukirwa ikoranabuhanga rya kamera, ibikorwa remezo bya network, n'ibisabwa mu kubika amakuru. Sisitemu zishingiye kuri IP zifite ubushobozi bwa 4MP cyangwa burenga iyo zitanga ibimenyetso by'ubucamanza ku bibazo by'umutekano. Imiterere myiza ya network ituma amashusho yoherezwa neza nta mbogamizi. Ba rwiyemezamirimo bagomba kuringaniza ingengo y'imari y'abakiriya n'ibisabwa mu mikorere yabo mu gihe bagenzura ko amategeko agenga igenzura ry'aho bakorera n'amategeko agenga ubuzima bwite bw'umuntu akorera.