IP vs Analog CCTV
Chon giua IP va analog CCTV. Tim hieu chi phi, kha nang mo rong, chat luong hinh anh va yeu cau lap dat cho moi cong nghe.
Tong quan
CCTV analog la tieu chuan tu nhieu thap ky. Camera IP (Internet Protocol) dai dien cho cong nghe giam sat hien dai. Moi loai deu co uu va nhuoc diem tuy theo tinh huong.
He thong CCTV Analog
He thong analog su dung cap dong truc truyen thong de truyen tin hieu video tu camera den DVR (dau ghi hinh ky thuat so). Cong nghe don gian, da duoc chung minh va chin muoi.
Uu diem analog:
- Chi phi ban dau thap hon: Camera va DVR re hon
- Lap dat don gian: Cap dong truc tieu chuan, de di day
- Do tin cay da duoc chung minh: Hang chuc nam kiem tra thuc te
- Hoat dong doc lap: Khong can mang
Nhuoc diem analog:
- Do phan giai han che: Toi da 1080p (2MP)
- Khong mo rong duoc: Kho them camera sau
- Gioi han cap: Toi da ~500m moi camera
- Tinh nang han che: Khong co phat hien chuyen dong, phan tich
He thong CCTV IP
Camera IP ket noi truc tiep vao mang (Ethernet hoac WiFi) va truyen video bang giao thuc internet tieu chuan. Hien dai hon, linh hoat va nhieu tinh nang hon.
Uu diem IP:
- Do phan giai cao: Tuy chon 4MP, 8MP, 12MP+
- De mo rong: Them camera bang cach them cong mang
- Truy cap tu xa: Xem video tu bat ky dau qua mang
- Tinh nang nang cao: Phan tich, phat hien chuyen dong, dieu khien PTZ
- Power over Ethernet (PoE): Camera duoc cap nguon tu cap mang
Nhuoc diem IP:
- Chi phi ban dau cao hon: Camera va NVR dat hon
- Phu thuoc mang: Can ha tang mang vung chac
- Yeu cau bang thong lon: Video do phan giai cao can mang nhanh
- Rui ro bao mat: Tiep xuc mang can bien phap an ninh mang
So sanh
| Yeu to | Analog | IP |
|---|---|---|
| Do phan giai | Den 1080p | 4MP den 12MP+ |
| Gia camera | $100-200 | $200-500 |
| Gia dau ghi | $300-600 | $500-1500 |
| Lap dat | Cap dong truc don gian | Ha tang mang |
| Kha nang mo rong | Kho | De |
| Truy cap tu xa | Han che | Day du |
| Phan tich | Khong | Day du |
Cach chon
Chon analog neu:
Ngan sach han che, can lap dat don gian, co nguon dien on dinh, khong can truy cap tu xa, va he thong nho (4-8 camera)
Chon IP neu:
Can do phan giai cao, muon xem tu xa, can mo rong he thong theo thoi gian, muon tinh nang nang cao hoac co ha tang mang doanh nghiep
Tuy chon ket hop:
Mot so he thong su dung ca camera analog va IP de linh hoat. Analog cho phu song co ban, IP cho cac khu vuc quan trong.