Xov Xwm Kev Lag Luam

Cov hom CCTV Cable cim

2021-03-03

Cov hom CCTV cmuaj peev xwm cim qhia tau

 

 

 

 

 

Qhov xaiv ntawm saib xyuas cmuaj peev xwm
Kev xaiv cmuaj peev xwm

 

1,CCTV Cmuaj peev xwm

 

Qhov kev ncua deb ntawm lub koob yees duab thiab saib xyuas lub tsev yog tsawg dua lossis sib npaug li 200 meters, sivRG59 cmuaj peev xwm.

 

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

 

2, PTZ control cmuaj peev xwm

Qhov kev ncua deb ntawm yias / qaij thiab maub los yog100m, thiab siv RVV6×0.5 sheathedcmuaj peev xwm.

 

Qhov kev ncua deb ntawm yias / qaij thiab maub los yogmore than 100 meters, using RVV6×0.75 tus pliavcmuaj peev xwm.

 

3, Lens control cmuaj peev xwm

 

Siv RVV4×0.5 sheathedhlau.

 

4, Decoder communication cmuaj peev xwm

 

yuav tsum siv RVV2×1 daim thaiv npog puas muaj khub

 

5, Lub koob yees duab fais fab qaum

 

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 cmuaj peev xwm. The power cmuaj peev xwms used at different distances are shown in the following tmuaj peev xwm:

 

Qhov nruab nrab nruab nrab ntawm lub koob yees duab thiab lub chaw saib xyuas yog 34 ~ 50m 21 ~ 33m20m

 

Power cord specifications (2 cmuaj peev xwms) 6m24m22.5m2

 

Monitoring system Cmuaj peev xwm laying

 

1. Cautions for laying the video cmuaj peev xwm

 

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

 

1.2 .2. Rau cov koob yees duab tau teeb tsa hauv lub tshuab nqa hluav taws xob, galvanized iron troughs yuav tsum tau siv rau cov xov hluav taws xob hauv lub thaiv ncej thiab hauv av kom txo cov kev cuam tshuam rau lub teeb liab video thaum lub tshuab nqa lub elevator pib.

 

1.3. If the camera is installed outdoors (such as the entrance of a compound or a parking lot, etc.), the cmuaj peev xwm needs to be routed outdoors or through overhead steel cmuaj peev xwms. 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. Kev ceev faj rau txheej txheej tswj cov xov hlau

 

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 cmuaj peev xwm 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 cmuaj peev xwm can use RVV6×0.5 sheathedcmuaj peev xwm; when the distance is greater than 100 meters, the pan/tilt control cmuaj peev xwm should use RVV6×0.75 tus pliavcmuaj peev xwm, and the lens control cmuaj peev xwm uses RVV4×0.5 Sheathed cmuaj peev xwm.

 

Yog tias kev saib xyuas hluav taws xob analog tswj lub yias / qaij thiab lub lens dhau los ntawm chav tswj hwm hauv matrix, tus lej txiav tawm feem ntau xav tau. Rau cov tswj Circuit Court txheej txheem, thov xa mus rau cov txheej txheem cov cuab yeej ntawm cov kev tswj hwm matrix tswj tuav siv.

 

2.2. Hauv qhov digital digital surveillance system, yog tias lub koob yees duab nrog lub yias / qaij rub lub lens yog ntsia, yias / qaij thiab lens yuav tsum tswj hwm los ntawm lub ntsuas phoo. Tus lej txiav txim siab feem ntau nruab ib sab ntawm lub koob yees duab, thiab tus neeg txiav suab thiab daim kab xev yees duab digital siv RS485 npav sib txuas lus. Cov kab hluav taws xob yuav tsum siv RVVP2×1 shielded twisted-pair cmuaj peev xwm 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 cmuaj peev xwm can be up to 1200 meters. The wiring diagram is as follows: see the relevant posts in the basic knowledge.

 

Tus lej ntsuas roj muaj ob hom kev xa xov hluav taws xob: AC220V thiab AC24V. Yog tias AC24V qhov ntsuas phoo raug xaiv, feem ntau yog muab los ntawm AC24V kev hloov pauv. Nws yog qhov tshwj xeeb kom nco ntsoov tias vim muaj kev cuam tshuam ntawm DC12V lub zog tso tawm hluav taws xob los ntawm qee qhov txiav txim, nws yuav muaj feem cuam tshuam rau cov duab thaum siv rau lub koob yees duab fais fab mov, yog li nws tsim nyog los muab lub koob yees duab (12V).

 

3. Kev ceev faj ntawm kev nteg ntawm lub koob yees duab fais fab qaum

 

Kev khiav hauj lwm tam sim no ntawm cov koob yees duab zoo tib yam rau ntawm kev ua lag luam uas siv DC12V fais fab mov yog li 200 ~ 300mA, thiab cov koob yees duab sib xyaw yog 350 ~ 400mA. Yog tias cov naj npawb ntawm cov koob yees duab me me (tsawg dua 5) thiab qhov kev ncua deb ntawm lub koob yees duab thiab lub tsev tswj xyuas tau ze yog qhov sib txawv (tsawg dua 50 metres), txhua lub koob yees duab tuaj yeem yog ib qho xov nrog RVV2×0.5 fais fab qaum rau chav tswj xyuas thiab siv los ntawm hloov pauv me me. Yog tias cov naj npawb ntawm cov koob yees duab loj, ib lub zog loj 12V DC tswj hwm lub zog yuav tsum tau siv rau kev siv hluav taws xob nruab nrab.

 

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 cmuaj peev xwm (commonly known as "cmuaj peev xwm loss", the resistance of 1m2 copper wire per 100m is 1.8Ω)). Rau kev saib xyuas lub tsev, ob lub 2.5-6m2 tooj liab tub ntxhais ob chav xov hlau yas siv hluav taws xob feem ntau siv los ua lub zog hluav taws xob loj kom coj los ntawm chav soj ntsuam mus raucmuaj peev xwm well, and walk along the cmuaj peev xwm well to the cmuaj peev xwm well on the floor where each camera is located. For the power supply of each camera on the floor, one RVV2×1 lossis RVV2×1.5 (yog tias cov naj npawb ntawm cov koob yees duab hauv pem teb no siab dua 6) cov hlua txuas hluav taws xob tuaj yeem siv los muab fais fab rau cov koob yees duab, lossis siv RVV2×0.5 cov kab xov xaim rau ib-rau-ib qhov kev hais daws kho los ntawm