Operating Instructions - intertraff.net
Intertraff
WalzCAM User Manual
ANPR Camera
Operating Instructions
Before attempting to connect or operate this product,
please read these instructions carefully and save this manual for future use.
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Intertraff
WalzCAM User Manual
We declare under our sole responsibility that the product
to which this declaration relates is in conformity with the
standards or other normative documents following the
provisions of Directive EEC/89/336
The serial number of this product may be found on the
back of the unit.
You should note the serial number of this unit in the
space provided and retain this book as a permanent
record of your purchase to aid identification in the event
of theft.
Model No. WALZCAM
Serial No.
WARNING: To prevent fire or electric shock hazard, do not expose this appliance to rain or moisture.
The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such
as vases, shall be placed on the apparatus
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WalzCAM User Manual
CONTENTS
Important Safety Instructions…………………………………………………………….. …………………..……
Preface ………………………………………………………………………………………………………………
Precautions …………..…………………..…………………………………………………………………………
4
5
6
Wirings ………….……………………...........................................................................................................
Power-in Connections ……………….…………………………………………………………………………….
Video Cables …..………………….………………….…………………………………………………………….
7
7
9
Camera Installation ……………..………………….…………………………………………………………….. 10
Mounting and Adjusting the camera ….…………………………………………………………………………. 10
Optimum Image Plate size ……………………………..………………………………………………………….. 10
Camera set-up ……..……………………………………………………………………………………………….. 13
Infrared Light control ………………………………………………………………………………………………. 13
Camera Iris …………………………………………………………………………………………………………. 13
Dynamic BC ………………………………………………………………………………………………………… 17
ANPR Software …………………………………………….……………………………………………………… 17
Maintenance ……………………………………………….……………………………………………………… 17
Camera Board Software Configuration ………………….……………………………………………………… 17
Troubleshooting …….………………………………………………………………………………………………
18
Technical Specifications ..…………………………………………………………………………………………
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APPENDIX A – Examples of camera installation .………………………………………………………………
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WalzCAM User Manual
IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8) Do not use near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding-type plug has two blades and a third grounding
prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit
into your outlet, consult an electrician for replacement of the obsolete outlet.
10) Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles and the points where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-overs.
13) Unplug this apparatus during lightning storms or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or
objects fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
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WalzCAM User Manual
PREFACE
WalzCAM is an integrated video camera and infrared illuminator specially designed for vehicle license plate
recognition applications. It uses a high resolution CCD array sensor with solid state infrared illuminator to
provide optimum images of reflective number plates over a full range of ambient light conditions. WalzCAM is
packed in a discrete, compact and rugged cast metal housing that is fully sealed to provide total reliability.
WalzCAM is completely self contained and requires only a 12V DC supply.
Features
• Super Sensitive .006 Lux Near IR Sensitive
• Sony 1/4” ExView CCD
• Software Controllable features & Functions
• Low Noise - Low Blooming
•Lens Mounts: Metal CS
Computer Requirements
The following environments are essential for your
computer to view camera pictures or to set up
parameters.
Computer: Dual Core processor
OS: One of the following should be installed.
Microsoft Windows XP Service Pack 2
Microsoft Windows Vista
Memories: 1 GB or higher
PREFACE
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Trademarks
• Adobe, Adobe logos, and Acrobat are registered
trademarks of Adobe Systems Incorporated in the
U.S. and/ or other countries.
• Microsoft, Windows, Windows Vista, and Windows
XP are registered trademarks of Microsoft
Corporation in the U.S. and/or other countries.
• Other names of companies and products contained
in these operating instructions may be trademarks or
registered trademarks of their respective owners.
• Distributing, copying, disassembling, reverse
complying, reverse engineering, and also exporting
in violation of export laws of the software provided
with this product, is expressly prohibited.
Document Convention
These operating instructions use the following
convention when describing the uses and
operations.
• Windows XP stands for Microsoft Windows XP.
Intertraff
WalzCAM User Manual
PRECAUTIONS
1. The installation should be made by qualified
service personnel or system installers.
2. Do not attempt to disassemble the camera.
To prevent electric shock, do not remove screws or
covers if this is not strictly required.
There are no user-serviceable parts inside. Ask
qualified service personnel for servicing.
3. Handle the camera with care.
Do not abuse the camera. Avoid striking, shaking,
etc. The camera could be damaged by improper
handling or storage.
4. Do not use strong or abrasive detergents
when cleaning the camera body.
Use a dry cloth to clean the camera when dirty.
When the dirt is hard to remove, use a mild
detergent and wipe gently. Then wipe off the
remaining detergent with a dry cloth.
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5. Clean the CCD faceplate with care.
Do not clean the CCD with strong or abrasive
detergents. Use lens tissue or a cotton tipped
applicator with ethanol.
6. Never face the camera toward the sun.
Whether the camera is in use or not, never aim it at
the sun. Otherwise, blooming or smear may be
caused.
7. Do not operate the camera beyond the
specified temperature, humidity or power source
ratings.
Use the camera at temperatures between –20 °C
and +55 В°C, and humidity below 90 %. The input
power source is 12 V DC.
8. To prevent fire or electric shock hazard, use a
UL listed cable (VW-1, style 1007) for the 12V DC
input terminal.
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WalzCAM User Manual
WIRINGS
Power-in Connections
• It is highly recommended to use the WalzCAM Power Supply Unit suitable to the voltage and current
required by the WalzCAM camera. See specifications.
• Use a UL listed cable (VW-1, style 1007) to prevent fire or electric shock.
1. Connect the power cable to the terminals while identifying the polarity.
2. Fasten the screws.
The picture above displays the wiring on the WalzCAM back panel. See the table below for detail:
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1
Video IN
2
3
4
Shield
Ground
+ 12 Volts DC
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WalzCAM User Manual
The image below shows the WalzCAM Power Supply.
The first terminal on the left is the 110/220 AC input. See the table below for the wirings:
1
2
3
N
Ground
L 110/220 volts AC
The Terminal on the right marked with the numbers 4 and 5 outputs 12 volts DC and must be joined to the
camera back panel as described earlier in this paragraph. See the table below for the wirings:
4
5
8
- 12 volts DC
+ 12 volts DC
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WalzCAM User Manual
Video Cable Connections
The maximum extensible coaxial cable length between the camera and the Frame Grabber card BNC input
is shown in the table below.
RG-59/U
(3C-2V)
RG 6/U
(5C-2V)
RG-11/U
(7C-2V)
RG-15/U
(10C-2V)
(m)
250
500
600
800
(ft)
825
1.650
1.980
2.640
Type of Coaxial
Cable
Recommended
maximum cable
length
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WalzCAM User Manual
CAMERA INSTALLATION
Mounting and Adjusting the Camera
Once you have secured the camera to the camera-mounting bracket (locally procured), you should find the
camera point of capture accordingly with the WalzCAM model you purchased.
Intertraff manufactures three different types of WalzCAM:
в€’
WalzCAM_16 suitable for license plate capturing at distance of 3 to 5 meters;
в€’
WalzCAM_25 suitable for license plate capturing at distance of 8 to 12 meters;
в€’
WalzCAM_50 suitable for license plate capturing at distance of 18 to 20 meters;
Each model mounts a different LED which is especially suitable for the operating distance assigned.
Using a WalzCAM_16 instead of a WalzCAM 25 may result in a low contrast number plate capturing.
During WalzCAM installation the horizontal and vertical angle should not be greater than 30 degrees. The
lower the angle, the higher will be the recognition rate which can be expected by any number plate
recognition software.
Start by setting up the camera in daylight conditions. This is helped by having a TV monitor available,
connected directly to the camera output, so the result can be immediately seen.
Adjust the aim of the camera with vehicles passing through the point of capturing, so that the number plates
are roughly central in the image. If the camera is offset to the site of the road, the vehicles will appear to
move diagonally through the field of view. They should be central when just passing the point of capturing.
The central point must be adjusted to coincide with the optimum plate image size as the vehicle approaches
or recedes from the camera.
Optimum plate image size
Vertically, the aim should be set so the average vehicle position is about 1/3 up from the bottom of the
picture. This allows large vehicles with higher plate mounting to be in the image. When the camera position
is properly set, tighten the mounting bolts firmly so to prevent movement. When the rest of the system is
working, the camera aim can be checked more accurately and readjusted if necessary.
It is crucial to set the size of the image correctly, either by changing the zoom setting of the lens or by
altering the camera aim. The width of a number plate should be approximately 25% of image width at
the nominal point where it is to be recognized. Intertraff ANPR software is very tolerant of variations in
plate and should work reliably for plate widths between 20% and 30% of the image width.
Adjust the focus of the lens to give a sharp picture at the recognition point. This should be not too
complicated being the WalzCAM lens of a fixed focus although a slight adjustment is always possible.
It’s wise to fix the focus ring when correctly adjusted.
The size of the number plate in the processed images below is correct:
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CAMERA SET UP
Infrared light control
The WalzCAM mounts 240 LEDs distributed on 25 lines. At the bottom of the LED there are 11 jumpers.
In the picture below, the first jumper on the left is circled in RED.
Each jumper controls the switching of one or more LED lines.
Camera IRIS
The WalzCAM mounts a varifocal lens (7.5 – 75 mm).
The IRIS control ring is positioned in the middle of the lens. The IRIS is an adjustable opening (aperture),
which controls the amount of light coming through the lens (ie. the "exposure"). The WalzCAM camera iris
works in basically the same way as a still camera iris - as you open the iris, more infrared light comes in and
the number plate picture appears brighter.
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The three pictures above show the same license plate whose characters become brighter and brighter as
soon as the distance between the camera and the number plate is reduced.
This is an example of camera installation where the IRIS needs to be slightly closed.
The picture which follows shows again a camera whose IRIS requires to be closed a little…
for being able to capture a picture like the one below.
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WalzCAM User Manual
Sometimes the camera installation requires the opposite. When the number plate appears like the one
captured in the image below, then we recommend to slightly open the IRIS:
to let more infrared light come into the camera board. The result of this is the capture of a picture like the one
below which is more suitable for any number plate recognition software.
Dynamic BC
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WalzCAM User Manual
A problematic situation occurs when the sun is behind the camera. In this situation the retro-reflective license
plates becomes extremely bright. This will dazzle the camera and cause the characters to become invisible.
Please read the paragraph Dynamic BC setting into the ANPR Manager user’s manual to know how to avoid
and fix this problem.
ANPR Software
When the WalzCAM has been set up, good quality pictures should be available for the ANPR software.
The TV monitor can be temporarily connected to each of the camera cables to verify this.
Connect the camera cables to the frame grabber video inputs, ensuring that they are matched with the
correct channels, if you have assigned a camera to a specific video channel.
Maintenance
There are no replaceable maintenance items. Depending on the installation conditions it may be necessary
to clean the front window from time to time. This should be done carefully with a clean damp cloth, taking
care not to scratch the surface of the sunshield.
Camera Board Software Configuration
WalzCAM is factory configured to provide optimum performance for number plate reading applications.
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WalzCAM User Manual
TROUBLESHOOTING
Problem
Pictures are not displayed
1.
2.
3.
4.
5.
What to do
Check that the power supply outputs 12 volts DC
Identifying the polarity and check the power and video cables
connections to the terminal at the back of the WalzCAM. Fasten
the screws.
Use a tester to ensure that 12 Volts DC is operating at the left
bottom side of the front camera PCB panel (the one where the
LED are mounted). You need to open the camera front panel to
get access to the PCB.
The LED are synchronized with the camera. For this reason if the
front panel of the camera is warm, this means that the camera and
LED are switched on.
Open the front panel camera housing and eject carefully the LED
panel. At the back of the camera board, there is a tiny white
connector which holds 6 red leads. Try to disconnect and connect
it again.
Pictures are too bright
Consider to slightly close the IRIS ring on the camera lens.
Pictures are too dark
Consider to slightly open the IRIS ring on the camera lens.
The video signal is unstable
Generally this problem comes up when the video cable was not installed
properly. Check that the video cable is operating at 1 volts pick to pick
Objects are not in focus
Screw the lens into the camera board
Are the LED switched on?
Point your mobile phone camera on the WalzCAM front panel to check if
the LED are on or off
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WalzCAM User Manual
TECHNICAL SPECIFICATIONS
Electrical Specifications
CCD sensor
1/4” IL CCD
765 x 582
>520 TVL
< 0.006 lux, near IR sensitive
> 48dB (AGC off)
0.45 default
Automatic 36 dB (AGC default) or Fixed options via software
Interlaced / Non Interlaced (selectable via Software)
Selectable via software
Internal
Default on (selectable via software)
AWB auto white mode, Fixed modes selectable via software
Default on
CCD Iris default
Automatic from 1/60 to 1/100,000
Composite 1Vp-p (75 ohms)
5VDC + 5% (not polarity protected)
< 0.8 W
Active pixels (HxV)
Horizontal resolution
Sensitivity
Signal to noise ratio
Gamma
Gain control
Scan mode
Mirror mode
Synchronization
Back light compensation
White balance mode
Contour enhancement
Iris control
Shutter speeds
Video output
Power supply
Power consumption
Environmental Specifications (Internal)
Ambient operating temp.
Ambient operating Humidity
Storage Temp.
Storage Humidity
Lifetime MTBF
Power Supply Unit
Mains Supply
Output
Dimensions
Weight
-20Вє to +55Вє C
20 up to 93%RH
-25Вє to +70Вє C
Up to 98%RH
> 150000
110/220V, 50Hz – 5 A
Nominal 12 Volts DC
160mm(L)x120mm(W)x90mm(H)
1 kg
Camera Housing
Camera Housing
Painting
Electric gear
Equipment
Regulations
In die-cast aluminium with wide cooling fins. (UNI7142 tests, British
standard 3193)
With polyester powder, black or sand blasted silver, upon
phosphochromate treatment, resistant to corrosive and saline
environments
Silicone flexible wire terminated with quick-connect clamps in admiralty
brass, with fiberglass braid, 1 sqmm cross section. Polycarbonate 2P + T
terminal block with maximum allowed lead cross section of 2.5 sqmm
Gasket in environment-friendly material. Cable gland in f.g. nylon, 1/2 gas
thread. Gear box in f.g. nylon. The hinge-opening frame stays hooked to
the housing
Produced according to applicable EN60598-1 CEI 34-21 standards, IP657
degree of protection according to EN 60529 standards
Weights and dimensions indicated are approximate. Specifications are subject to change without notice.
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APPENDIX A – Examples of Camera installation
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WalzCAM User Manual
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WalzCAM User Manual
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WalzCAM User Manual
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Manduria (TA), Italy
http://www.intertraff.com
В© 2010 Intertraff. All Rights Reserved. Printed in Italy
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