Identifikasi Kabel II

Pilihan ngawasikabel

Kabelpilihan

 

1,CCTVkabel

 

Jarak antarane kamera lan host ngawasi kurang saka utawa padha karo 200 meter, nggunakake kabel video RG59 (128 seri).

 

Jarak antarane kamera lan host ngawasi luwih saka 200 meter, nggunakake kabel video SYV75-5.

 

2, kontrol PTZkabel

 

Jarak antarane wajan / miring lan kontroler yaiku≤100m, lan nggunakake RVV6×0,5 kabel sheathed.

 

Jarak antarane wajan / miring lan kontroler yaikumore than 100 meters, using RVV6×0,75 kabel sarung.

 

3,Lkontrol enskabel

 

Gunakake RVV4×0,5 kabel kawat.

 
4,Dkomunikasi ecoderkabel

kudu nggunakake RVV2×1 pasang bengkong terlindung

 

5,Ckabel listrik amera

 

Yen sistem kasebut duwe 20 kamera biasa, lan jarak rata-rata antarane kamera lan host ngawasi 50 meter, kabel plastik ganda inti tembaga BVV6m2 kudu digunakake minangka saluran listrik utama. Jalur listrik sing digunakake ing jarak sing beda ditampilake ing tabel ing ngisor iki:

 

Jarak rata-rata antarane kamera lan host ngawasi yaiku 34 ~ 50m 21 ~ 33m≤20m

 

Spesifikasi kabel listrik (2 baris) 6m24m22.5m2

 

Ngawasi lapisan sistem

 

1. Cautions for laying the video kabel

 

1.1. If the distance between the camera and the monitoring host (image processor, matrix control host or digital video recorder) is less than 200 meters, the RG59 video kabel can be used. If it exceeds 200 meters, the SWY-75-5 video kabel should be used to ensure the monitoring image the quality of.

 

1.2. Kanggo kamera sing dipasang ing elevator, palung wesi galvanis kudu digunakake kanggo kabel ing poros elevator lan didhasarake kanggo nyuda gangguan sinyal video nalika motor lift diwiwiti.

 

1.3. If the camera is installed outdoors (such as the entrance of a compound or a parking lot, etc.), the line needs to be routed outdoors or through overhead steel kabels. If conditions permit, video arrestrs should be installed (because the installation of lightning protection equipment will cause The total project cost increases), that is, one video arrester is installed on the camera side and the monitoring host side respectively, and each video arrester must be grounded (outdoor cameras must be grounded separately, and the video arresters in the monitoring room can be grounded uniformly), To prevent damage to the equipment caused by induction lightning.

 

2. Pancegahan kanggo masang kabel kontrol

 

2.1. In the analog monitoring system, if a camera equipped with a pan/tilt zoom lens is installed and controlled by a pan/tilt lkontrol ensler, the control line should be selected according to the distance between the camera and the pan/tilt lkontrol ensler. When the distance is less than 100 meters, the pan/tilt control line can use RVV6×0,5 garis sheathed; yen jarak luwih saka 100 meter, garis kontrol wajan / miring kudu nggunakake RVV6×0.75 sheathed line, and the lkontrol ens line uses RVV4×0.5 Sheathed kabel.

 

Yen sistem pemantauan analog ngontrol pan / miring lan lensa liwat host kontrol matriks, umume dibutuhake decoder. Kanggo tata letak sirkuit kontrol, waca syarat teknis host kontrol matrik sing digunakake.

 

2.2. Ing sistem pengawasan digital, yen kamera sing dilengkapi lensa zoom / miring dipasang, telusur / miring lan lensa kudu dikontrol liwat dekoder. Dekoder umume dipasang ing jejere kamera, lan dekoder lan perekam video digital nggunakake bus RS485 kanggo komunikasi. Kabel kudu nggunakake RVVP2×1 shielded twisted-pair kabel from the digital video recorder to the nearest decoder 1, and then from decoder 1 to decoder 2... The current 16-channel digital video recorder can connect up to 16 decoders. The total length of RS485 communication line can be up to 1200 meters. The wiring diagram is as follows: see the relevant posts in the basic knowledge.

 

Dekoder duwe rong jinis pasokan listrik: AC220V lan AC24V. Yen decoder AC24V dipilih, umume diwenehake dening trafo AC24V. Penting banget kanggo dicathet yen amarga gangguan output pasokan listrik DC12V dening sawetara dekoder, bakal menehi pengaruh tartamtu marang gambar nalika digunakake kanggo pasokan listrik kamera, mula kudu nyedhiyakake seragam kamera (12V).

 

3. Ati-ati kanggo nyelehake kabel listrik kamera

 

Arus operasi kamera biasa ing pasar sing nggunakake pasokan listrik DC12V udakara 200 ~ 300mA, lan kamera sing terintegrasi yaiku 350 ~ 400mA. Yen jumlah kamera cilik (kurang saka 5) lan jarak antarane kamera lan host ngawasi cukup cedhak (kurang saka 50 meter), saben kamera bisa dipasang kanthi individu nganggo RVV2×0,5 kabel listrik menyang ruang pemantauan lan didukung karo trafo cilik. Yen jumlah kamera akeh, pasokan listrik stabil 12V DC kudu digunakake kanggo pasokan listrik terpusat.

 

Ing desain program lan proses konstruksi, kudu dipikirake kabeh kekuwatan kabeh kamera lan penurunan voltase sing disebabake saluran transmisi (umume diarani "line loss", resistensi kawat tembaga 1m2 per 100m yaiku 1,8Ω). Kanggo ngawasi bangunan, loro kabel plastik plastik dobel 2.5-6m2 umume digunakake minangka pasokan listrik utama kanggo timbal saka kamar ngawasi menyang garis kanthi apik, lan mlaku sadawane garis menyang garis sing apik ing lantai saben kamera dununge. Kanggo catu daya saben kamera ing jubin, siji RVV2×1 utawa RVV2×1,5 (yen jumlah kamera ing lantai iki ngluwihi 6) kabel listrik bisa digunakake kanggo nyuplai daya menyang kamera, utawa nggunakake RVV2×0,5 kabel selubung kanggo korespondensi siji-sijine didhukung dening.