Dahua Network Video Servers

System

Main Processor

One Intel Xeon E3-1275 V5, 3.6 GHz, 4C/8T

Chip

Intel C236

Operating System

CentOS Linux release 7.4.1708 (Core)

Intelligent Card

1 Dahua DH-AIX3000 self-developed standard half-height intelligent card

Memory

Two 8GB DDR4 memory, maximum 4 slots.

HDD

One 3.5"" 4T disk which can be extended to maximum 16T (each disk is 4T), and maximum 4 slots.
7.2K RPM SATA 6Gbps 512n 3.5"

Traffic Event Detection

Multi-rules Application

Set and apply multiple rules.

Detection Area and Exclusion Area Setting

Set max 1 detection area and 10 exclusion areas. The server will give an alarm about the events in the detection area and outside the exclusion area.

Real-time Display

Display rule detection areas and target detection boxes in real-time video.
Rule and target detection boxes can flicker during real-time alarm.

Illegal Lane Change

An alarm is triggered when a vehicle is detected changing from one lane to another lane.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate is 90%.
Front installation for distant view in tunnel: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80%.
Side installation for distant view on bridges: Target pixel is ≥120×120. The function is supported.

Cross Solid Yellow Line

An alarm is triggered when a vehicle is detected driving on the solid yellow line for certain duration.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate is 90%.
Front installation for distant view in tunnel: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80%.

Wrong-way Detection

An alarm is triggered when a vehicle is detected driving against the specified direction on the lane for a duration exceeding the set value.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate 90%.
Front installation for distant view in tunnel: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80%.
Side installation for distant view on bridges: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80% without obstacles.

Parking Detection

An alarm is triggered when a vehicle is detected stopped on the road for a duration exceeding the set value.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate 90%.
Front installation for distant view in tunnel: Target pixel is ≥120×120, detection rate is 80% and effective rate is 80%.
Side installation for distant view on bridges: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80% without obstacles.

Traffic Congestion Detection

An alarm is triggered when vehicles’ queuing length/lane length ratio exceeds the set value for a duration exceeding the set value.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate 90%.
Front installation for distant view in tunnel: Target pixel is ≥120×120, detection rate is 80% and effective rate is 80%.
Side installation for distant view on bridges: Target pixel is ≥120×120, detection rate is 70% and effective rate is 80%.

Overspeed Detection

An alarm is triggered when a vehicle is detected driving at a speed exceeding the set value for a duration exceeding the set value.

Underspeed Detection

An alarm is triggered when a vehicle is detected driving at a speed lower than the set value for a duration exceeding the set value.

Pedestrian Detection

An alarm is triggered when a pedestrian is detected entering the prohibited area for a duration exceeding the set value.
The target is not covered or interrupted during the period.
Front installation for urban close view ANPR and e-police; detection rate is 90% and effective rate 90%.
Front installation for distant view in tunnel: Target pixel is ≥ 40×80, detection rate is 90% and effective rate is 90%.
Side installation for distant view on bridges: Target pixel is ≥ 40×80, detection rate is 80% and effective rate is 80%.

Debris Detection

An alarm is triggered when debris appears in the detection area for a duration exceeding the set value. Target pixel is ≥ 15×15.

Traffic Flow Statistics

Make a statistics of vehicles that pass the trigger line of a lane within the specified cycle. Make a statistics of average speed, time occupancy rate, space occupation rate, space headway, time headway and queue length. For front installation scene, accuracy of traffic flow detection on dual lane is above 90%. Other functions are supported.

Intrusion

An alarm is triggered when a motor vehicle is detected entering the detection area. It applies to occupancy of emergency lanes and other scenes. Detection rate is 90%.

Fire Detection

An alarm is triggered when fire appears and continues for a duration.

Smoke Detection

An alarm is triggered when smoke appears and continues for a duration.

ANPR

Recognize the number plate of vehicles that park illegally, change lanes illegally, cross solid yellow line, drive in the wrong direction, and intrude the detection area. The number plate width shall be above 90 pixels.

Report Generation and Export

Export alarm information in Excel, including device, device IP address, channel name, event time, event name, event type, lane number, plate number and speed.

Alarm Search

Search alarm information by device, channel, event type and snapshot time.

Traffic Event Detection

Scene Attribute

It is widely used in traffic management, operation and maintenance of highways, urban expressways, viaduct bridges, tunnels and sea-crossing bridges.

Camera Installation

Front installation (recommended) and side installation.

Camera Installation Height

3 to 6 meters are recommended.

Camera Installation Angle

Recommended angle of depression is 10 to 15°, and coverage distance is 50 to 100 meters, horizontal 2 or 3 lanes.

Traffic Event Detection Performance

Video Resolution

720P–4K is recommended.

Camera Access

One server supports the access analysis of maximum 16-channel 4K cameras.

Traffic Event Detection Type

Parking, pedestrian, congestion, illegal lane change, cross solid yellow line, wrong-way detection, debris, smoke, fire, overspeed, underspeed and intrusion detection (for motor vehicles).

Traffic Parameters Collection

Traffic flow, average speed, time occupancy rate, space occupation rate, space headway, time headway and queue length.

Ports

Network

Two 1000M Ethernet ports

USB

2 front USB2.0 ports, 2 rear USB3.0 ports and 2 rear USB2.0 ports

VGA

2 VGA ports

DVI

1

DP

2

General

Power Supply

100–240V, 50–60Hz, 6A–3A

Power Redundancy

Single power supply

Power Consumption

≤ 400W

Operating Temperature

10°C to 35°C (50°F to 95°F)

Operating Humidity

10%–85% RH (29°C)

Storage Temperature

–20°C to 60°C (–4°F to 140°F)

Storage Humidity

10%–95%RH (33°C)

Gross Weight

16.00 kg (35.3 lb)

Net Weight

8.50 kg (18.7 lb)

Dimensions

43.20 mm × 438.50 mm × 576.63 mm

(1.70" × 17.26"× 22.70") (H × W × D)

Box Dimensions

271.00 mm × 625.00 mm × 895.00 mm

(10.67" × 24.61" × 35.24") (H × W × D)

Installation

Standard 19" rack installation with guide rail