Habari za Viwanda

Kitambulisho cha Cable cha kawaida cha CCTV

2021-03-03

Kitambulisho cha kawaida cha kebo ya CCTV

 

 

 

 

 

Uteuzi wa kebo ya ufuatiliaji
Uteuzi wa kebo

 

1,CCTV Cuwezo

 

Umbali kati ya kamera na mwenyeji wa ufuatiliaji ni chini ya au sawa na mita 200, ukitumiaRG59 cuwezo.

 

The distance between the camera and the monitoring host is more than 200 meters, using SYV75-5 video cuwezo.

 

2, PTZ control cuwezo

Umbali kati ya sufuria / kutega na kidhibiti ni100m, na tumia RVV6×0.5 iliyopigwacuwezo.

 

Umbali kati ya sufuria / kutega na kidhibiti nimore than 100 meters, using RVV6×0.75 iliyopigwacuwezo.

 

3, Lens control cuwezo

 

Tumia RVV4×0.5 waya iliyokatwa.

 

4, Decoder communication cuwezo

 

inapaswa kutumia RVV2×Jozi 1 iliyopindwa

 

5, Kamba ya umeme ya Kamera

 

If the system has 20 ordinary cameras, and the average distance between the camera and the monitoring host is 50 meters, the BVV6m2 copper core double plastic wire should be used as the main power cuwezo. The power cuwezos used at different distances are shown in the following tuwezo:

 

Umbali wa wastani kati ya kamera na mwenyeji wa ufuatiliaji ni 34 ~ 50m 21 ~ 33m20m

 

Power cord specifications (2 cuwezos) 6m24m22.5m2

 

Monitoring system Cuwezo laying

 

1. Cautions for laying the video cuwezo

 

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 cuwezo can be used. If it exceeds 200 meters, the SWY-75-5 video cuwezo should be used to ensure the monitoring image the quality of.

 

1.2. Kwa kamera zilizowekwa kwenye lifti, mabwawa ya mabati yanapaswa kutumiwa kwa wiring kwenye shimoni la lifti na msingi ili kupunguza kuingiliwa kwa ishara ya video wakati gari ya lifti inapoanza.

 

1.3. If the camera is installed outdoors (such as the entrance of a compound or a parking lot, etc.), the cuwezo needs to be routed outdoors or through overhead steel cuwezos. If conditions permit, video arresters 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. Tahadhari kwa kuweka waya za kudhibiti

 

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 lens controller, the control cuwezo should be selected according to the distance between the camera and the pan/tilt lens controller. When the distance is less than 100 meters, the pan/tilt control cuwezo can use RVV6×0.5 iliyopigwacuwezo; when the distance is greater than 100 meters, the pan/tilt control cuwezo should use RVV6×0.75 iliyopigwacuwezo, and the lens control cuwezo uses RVV4×0.5 Sheathed cuwezo.

 

Ikiwa mfumo wa ufuatiliaji wa Analog unadhibiti sufuria / kuelekeza na lensi kupitia mpokeaji wa kudhibiti tumbo, dekoda inahitajika kwa ujumla. Kwa mpangilio wa mzunguko wa kudhibiti, tafadhali rejelea mahitaji ya kiufundi ya mpangiaji wa kudhibiti tumbo aliyetumiwa.

 

2.2. Katika mfumo wa ufuatiliaji wa dijiti, ikiwa kamera iliyo na lensi ya kukuza / tilt imewekwa, sufuria / tilt na lensi zinahitaji kudhibitiwa kupitia dekoda. Decoder kwa ujumla imewekwa karibu na kamera, na dekoda na kinasa video cha dijiti hutumia basi ya RS485 kuwasiliana. Wiring inapaswa kutumia RVVP2×1 shielded twisted-pair cuwezo 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 cuwezo can be up to 1200 meters. The wiring diagram is as follows: see the relevant posts in the basic knowledge.

 

Decoder ina aina mbili za usambazaji wa umeme: AC220V na AC24V. Ikiwa kisimbuzi cha AC24V kimechaguliwa, hutolewa kwa ujumla na kibadilishaji cha AC24V. Ni muhimu kutambua kwamba kwa sababu ya kuingiliwa kwa pato la usambazaji wa umeme wa DC12V na dekoda zingine, itakuwa na athari fulani kwenye picha wakati unatumiwa kwa usambazaji wa umeme wa kamera, kwa hivyo inahitajika kusambaza sare kamera (12V).

 

3. Tahadhari kwa kuwekewa kamba ya umeme ya kamera

 

Uendeshaji wa sasa wa kamera za kawaida kwenye soko linalotumia umeme wa DC12V ni karibu 200 ~ 300mA, na kamera zilizounganishwa ni 350 ~ 400mA. Ikiwa idadi ya kamera ni ndogo (chini ya 5) na umbali kati ya kamera na mwenyeji wa ufuatiliaji uko karibu (chini ya mita 50), kila kamera inaweza kushonwa na RVV2×Kamba ya umeme ya 0.5 kwenye chumba cha ufuatiliaji na inayotumiwa na transformer ndogo. Ikiwa idadi ya kamera ni kubwa, usambazaji wa umeme uliodhibitiwa wa 12V DC unapaswa kutumika kwa usambazaji wa umeme wa kati.

 

In the program design and construction process, it is necessary to consider the total power of all cameras and the voltage drop caused by the transmission cuwezo (commonly known as "cuwezo loss", the resistance of 1m2 copper wire per 100m is 1.8Ω). Kwa ufuatiliaji wa jengo, waya mbili za plastiki shaba 2.5-6m2 hutumiwa kama umeme kuu kuongoza kutoka chumba cha ufuatiliaji hadicuwezo well, and walk along the cuwezo well to the cuwezo well on the floor where each camera is located. For the power supply of each camera on the floor, one RVV2×1 au RVV2×1.5 (ikiwa idadi ya kamera kwenye sakafu hii inazidi 6) kamba za umeme zinaweza kutumiwa kusambaza umeme kwa kamera, au kutumia RVV2×Waya za shehia 0.5 kwa mawasiliano ya moja kwa moja inayotumiwa na