Giam bao dong gia trong CCTV
Bao dong gia lang phi tai nguyen va lam giam do tin cay cua he thong. Tim hieu cac chien luoc da duoc chung minh de giam thieu phat hien sai trong khi van dam bao an ninh.
Muc luc
Nguyen nhan bao dong gia?
Bao dong gia xay ra khi he thong phat hien chuyen dong hoac thay doi khong phai la moi de doa an ninh thuc su. Dieu nay lang phi thoi gian nhan vien bao ve va lam giam do tin cay cua he thong.
Nguyen nhan pho bien:
- Do nhay qua cao: Ngay ca chuyen dong nho cung kich hoat phat hien
- Thay doi anh sang: Anh nang qua cua so, den duong, bong
- Anh huong thoi tiet: Mua, tuyet, gio len ong kinh camera
- Con trung va dong vat: Sau bo, chim, dong vat nho
- Bo tri sai: Camera nhin thay khu vuc khong can giam sat
Cai dat phat hien chuyen dong
Camera IP hien dai co phat hien chuyen dong co the cau hinh. Tinh chinh cai dat la cach hieu qua nhat de giam bao dong gia.
Muc do nhay
Bat dau tu muc trung binh (50%), khong phai toi da. Thu nghiem cac muc do nhay khac nhau va tim muc toi uu noi cac moi de doa thuc su duoc phat hien nhung bao dong gia duoc giam thieu.
Kich thuoc vat the toi thieu
Dat kich thuoc phat hien toi thieu de loai bo chuyen dong nho (con trung, la cay). Chi phat hien vat the lon hon nguoi.
Thoi luong tinh bang khung hinh
Yeu cau chuyen dong phai hien dien trong nhieu khung hinh truoc khi kich hoat bao dong. Nhung nhap nhoang ngan khong kich hoat canh bao.
Vung loai tru
Xac dinh cac khu vuc can bo qua (ria bai dau xe, khu giao thong, cay trong gio). Chi giam sat cac vung quan trong.
Chien luoc bo tri
Bo tri camera dung cach giam dang ke bao dong gia bang cach dam bao camera chi nhin thay cac khu vuc can giam sat.
Huong dan bo tri:
- Tranh duong/giao thong: Khong huong vao duong cong cong co giao thong lien tuc
- Tranh cay coi: Khong bao gom cay, bui va cay trong bi gio thoi
- Tranh cua so: Phan chieu va thay doi anh sang gay bao dong gia
- Dieu chinh goc can than: Dat de chi nhin thay cac khu vuc quan tam
Yeu to moi truong
Thay doi anh sang
Mat troi moc/lan va bat/tat den gay bao dong gia. Mot so camera co phat hien "thich ung" bo qua thay doi anh sang tu tu.
Bao ve thoi tiet
Lap dat tam che mua va mai che de bao ve ong kinh khoi mua, tuyet va hoi nuoc. Thuong xuyen lau sach ong kinh.
Phong chong con trung
Su dung vom chong con trung. Dat camera xa cac vat thu hut con trung (den, cay coi).
Ky thuat giam nang cao
Phat hien dua tren AI
Camera hien dai su dung AI de phan biet nguoi, phuong tien va vat the. Phat hien AI giam manh bao dong gia.
Kich hoat da cam bien
Yeu cau phat hien chuyen dong VA cam bien cua/cam bien nhiet de kich hoat bao dong. Giam kich hoat gia chi dua tren chuyen dong.
Lich thoi gian
Cai dat phat hien khac nhau cho gio lam viec va ngoai gio. Cai dat chat che hon khi cong trinh trong.
Kiem tra dinh ky
Kiem tra phat hien hang thang. Dieu chinh cai dat dua tren cac mo hinh bao dong gia quan sat duoc.