GeoVision GV-LPR2811-DL Manuel utilisateur

GV-LPR2811-DL Camera

Installation Guide

Thank you for purchasing GV-LPR2811-DL Camera. This guide is designed to inform users

of certain installation guidelines and tips before installing the camera. For advanced

information on how to use GV-LPR2811-DL, please refer to GV-LPR2811-DL Camera User’s

Manual.

LPR2811-DL-IG-A

Under the copyright laws, thismanual may not be copied, inwhole or inpart,

without the written consent of GeoVision.

Every effort has been made to ensure that the information in this manual is

accurate. GeoVision, Inc. makes no expressed or implied warranty of any kind

and assumes no responsibility for errors or omissions. No liability is assumed

for incidental or consequential damages arising from the use of the information

or products contained herein. Features and specifications are subject to

change without notice.

Note: No memory card slot or local storage function for Argentina.

GeoVision, Inc.

9F, No. 246, Sec. 1, Neihu Rd.,

Neihu District, Taipei, Taiwan

Tel: +886-2-8797-8377

Fax: +886-2-8797-8335

http://www.geovision.com.tw

Trademarks used in this manual: GeoVision, the GeoVision logo and GV

series products are trademarks of GeoVision, Inc. Windows and Windows XP

are registered trademarks of Microsoft Corporation.

November 2020

Contents

1. Installation and Recognition Parameters ...................................................................2

2. Wire Definition..............................................................................................................5

3. Common Problems ......................................................................................................6

Before installing GV-LPR Cameras, please read through this document carefully to ensure

the captured images are suitable for license plate recognition.

1. Installation and Recognition Parameters

View Angle

⚫Vertical View Angle ≦30°: The vertical view angle of the camera shall be within 30

degrees to the ground.

⚫Horizontal View Angle ≦30°: The horizontal view angle of the camera shall be within

30 degrees relative to the recognition target.

Camera Position

Installation Scenario

Recommended

Height in m (ft)

Recognition

Distance in m (ft)

Maximum Speed

in km/h (mi/h)

Parking Entrance/Exit

1 ~ 3 (3.3 ~ 9.8)

4.5 ~ 22

(14.8 ~ 72.2)

30 (18)

Roadside

1-Laned

2 ~ 6 (6.6 ~ 19.7)

100 (62)

2-Laned

8 ~ 22

(26.2 ~ 72.2)

60 (37)

Centered-

Top

1-Laned

5 ~ 6 (16.4 ~ 19.7)

100 (62)

2-Laned

60 (37)

⚫Parking Entrance/Exit: For installing at a parking entrance/exit, the camera shall be

mounted at a recommended height of 1 ~ 3 meters (3.3 ~ 9.8 ft) with an optimal

recognition distance of 4.5 ~ 22 meters (14.8 ~ 72.2 ft) while the speed of the target

vehicle cannot be more than 30 km/h (18 mi/h).

4.5 ~ 22 m (14.8 ~ 72.2 ft)

1 ~ 3 m

(3.3 ~ 9.8 ft)

⚫Roadside: For installing at the side of a road, the camera shall be mounted at a

recommended height of 2 ~ 6 meters (6.6 ~ 19.7 ft), with an optimal recognition distance

of 4.5 ~ 22 or 8 ~ 22 meters (14.8 ~ 72.2 or 26.2 ~ 72.2 ft), respectively for single-laned

and dual-laned roads, while the speed of the target vehicle cannot exceed 100 or 60 km/h

(62 or 37 mi/h).

2 ~ 6 m

(6.6 ~ 19.7 ft)

4.5 or 8 ~ 22 m (14.8 or 26.2 ~ 72.2 ft)

⚫Centered-Top: For installing at the top of the center of a road, the camera shall be

mounted at a recommended height of 5 ~ 6 meters (16.4 ~ 19.7 ft), with an optional

recognition distance of 8 ~ 22 meters (26.2 ~ 72.2 ft), while the speed of the target vehicle

cannot exceed 100 or 60 km/h (62 or 37 mi/h), respectively for single-laned and

dual-laned roads.

5 ~ 6 m

(16.4 ~ 19.7 ft)

8 ~ 22 m (26.2 ~ 72.2 ft)

Note: The captured plate should be no less than 50 pixels in height. To check the height,

copy the license plate image, open and paste into Paint, and save it in BMP format.

Right-click the BMP file, select Properties and click the Summary tab to find the height

information.

2. Wire Definition

The data cable provides connection for power, ground and network access. The wires are

defined as below:

No.

Wire

Definition

RJ-45

Ethernet / PoE (IEEE 802.3af)

2-pin terminal block

DC 12V

Pink RCA

Audio Input

Green RCA

Audio Output

Digital I/O

Blue

DI 1

Green

DI 2

Yellow

DO 1

Orange

DO 2

Brown

GND

Gray

RS-485 1+

Purple

RS-485 1-

Bright Green

RS-485 2+

White

RS-485 2-

3. Common Problems

⚫Low Image Contrast: Adjust the image contrast and/or improve lighting conditions of the

recognition site.

⚫Large Roll, Yaw and Pitch Angles: Adjust the angle and direction of the camera.

⚫Overexposed Images: Reduce the illumination or adjust the angle/direction of the

camera.

⚫Blurry Images: Adjust the focus or the shutter speed of the camera.

⚫Hollow Characters: Reduce the illumination.

⚫Plate Covered in Shadow: Avoid placing the camera where it is subjected to direct

sunlight, reflections or shadows, which may limit recognition performance.

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