Ukuchongwa kwentambo okuqhelekileyo kweCCTV

 

 

 

 

 

Ukukhethwa kwentambo yokubeka iliso
Ukukhethwa kwentambo

 

1,ICCTV Cnako

 

Umgama phakathi kwekhamera kunye nendawo yokubamba iliso ungaphantsi okanye ulingana neemitha ezingama-200, usebenzisaRG59 cnako.

 

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

 

2, PTZ control cnako

Umgama phakathi kwepen / ukuthambeka kunye nesilawuli≤100m, kwaye usebenzise iRVV6×0.5 sheatcnako.

 

Umgama phakathi kwepen / ukuthambeka kunye nesilawulimore than 100 meters, using RVV6×Kukhutshwe i-0.75cnako.

 

3, Lens control cnako

 

Sebenzisa iRVV4×I-0.5 yocingo.

 

4, Decoder communication cnako

 

kufuneka usebenzise iRVV2×Isikhuselo esinye esijijekileyo

 

5, Intambo yamandla yekhamera

 

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 cnako. The power cnakos used at different distances are shown in the following tnako:

 

Umgama ophakathi kwekhamera kunye nomphathi wokubekwa kweliso yi-34 ~ 50m 21 ~ 33m≤20m

 

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

 

Monitoring system Cnako laying

 

1. Cautions for laying the video cnako

 

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

 

1.2. Iikhamera ezifakwe kwizinyusi, imikhombe yentsimbi kwalenza ukuba isetyenziselwe ukufakela iingcingo kwisinyusi selifti kwaye ibekwe emhlabeni ukunciphisa uphazamiseko kumqondiso wevidiyo xa imoto yesinyusi iqala.

 

1.3. If the camera is installed outdoors (such as the entrance of a compound or a parking lot, etc.), the cnako needs to be routed outdoors or through overhead steel cnakos. 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. Amanyathelo okhuseleko ekubekeni iingcingo zolawulo

 

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 cnako 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 cnako can use RVV6×0.5 sheatcnako; when the distance is greater than 100 meters, the pan/tilt control cnako should use RVV6×Kukhutshwe i-0.75cnako, and the lens control cnako uses RVV4×0.5 Sheathed cnako.

 

Ukuba inkqubo yokujonga esweni i-analog ilawula ipan / ukuthambeka kunye nelensi ngokusebenzisa umphathi wematrix yolawulo, kufuneka idikhowuda ngokubanzi. Ukulungiselela ubeko lwesekethe yolawulo, nceda ujonge kwiimfuno zobugcisa zomsingathi wolawulo olusetyenzisiweyo.

 

2.2. Kwinkqubo yokujonga yedijithali, ukuba ngaba ikhamera enepani / i-lens zoil zoom ifakiwe, ipan / ukuthambeka kunye neelensi kufuneka zilawulwe ngedikhowuda. Isikhombisi sifakelwa ecaleni kwekhamera, kwaye idikhowuda kunye nerekhodi yedijithali isebenzisa i-RS485 ibhasi ukunxibelelana. Iingcingo kufuneka zisebenzise iRVVP2×1 shielded twisted-pair cnako 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 cnako can be up to 1200 meters. The wiring diagram is as follows: see the relevant posts in the basic knowledge.

 

I-decoder ineentlobo ezimbini zonikezelo lwamandla: AC220V kunye ne-AC24V. Ukuba kukhethwe i-decoder ye-AC24V, inikezelwa ngokubanzi sisiguquli se-AC24V. Kubaluleke ngakumbi ukuba uqaphele ukuba ngenxa yokuphazamiseka kokunikezelwa kwamandla kwe-DC12V ngabadibanisi abathile, iya kuba nefuthe elithile kumfanekiso xa isetyenziselwa unikezelo lwamandla ekhamera, ke kubalulekile ukuba unikeze ngokufanayo ikhamera (12V).

 

3. Amanyathelo okhuseleko ekubekeni intambo yombane yekhamera

 

Ukusebenza kweekhamera eziqhelekileyo kwintengiso ezisebenzisa i-DC12V yokuhambisa umbane malunga ne-200 ~ 300mA, kwaye iikhamera ezihlanganisiweyo ziyi-350 ~ 400mA. Ukuba inani leekhamera lincinci (lingaphantsi kwe-5) kwaye umgama phakathi kwekhamera kunye nomphathi wokubekwa kweliso usondele (ngaphantsi kweemitha ezingama-50), ikhamera nganye inokubanjelwa iRVV2×Intambo yamandla eyi-0.5 kwigumbi lokubeka iliso kwaye inikwe amandla sisiguquli esincinci. Ukuba inani leekhamera likhulu, amandla ombane aphezulu e-12V DC kufuneka asetyenziselwe ukuhambisa umbane.

 

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 cnako (commonly known as "cnako loss", the resistance of 1m2 copper wire per 100m is 1.8Ω). Ukubeka iliso kwisakhiwo, iingcingo ezibini zeplastikhi ezibini ezi-2.5-6m2 zihlala zisetyenziswa njengombane ophambili wokukhokelela kwigumbi lokubeka esweni ukuyacnako well, and walk along the cnako well to the cnako well on the floor where each camera is located. For the power supply of each camera on the floor, one RVV2×1 okanye i-RVV2×1.5 (ukuba inani leekhamera kulo mgangatho lingaphezulu kwe-6) iintambo zombane zingasetyenziselwa ukubonelela ngombane kwiikhamera, okanye ukusebenzisa iRVV2×Iingcingo ze-0.5 ze-sheath zembalelwano enye ukuya kwenye inikwe amandla yi