IMPS (TM) 
Integrated Multi-Pass System
State of the Art
Vehicle License Plate Recognition System

Complete system comprising
 

1. CCD Camera with auto-iris fixed lens
2. Industrialised LPR Computer (Pentium) with image capture card
3. UNIX Operating System and IMPS LPR software.

Up to 2 additional cameras may be added to the system.
There is a switching delay of 0.2 seconds between unsynchronised cameras.
With one additional cameras product number SYS-A2.
With two additional cameras product number SYS-A3.

Input

A trigger input is required to initiate reading of the license plate.
Upon a trigger, the system will  perform an image capture , read the license plate and output the image file and the LPR result file.

Output

There are two outputs:
i) image file, jpeg compressed 50k bytes
ii) LPR results file (License Plate Numbers), 256 bytes

The results may be output via
i)  A Network File System (NFS) mounted filesystem
ii) Remote File Copy (RCP)
iii) TCP sockets
 

Triggering

The system may be triggered via
i) Serial Port Control I/O
 Supports up to a maximum of 2 triggers.
ii)  Serial Data Communications
iii) TCP Data Communications
iv) User Defined

Performance

Minimum of 95% accuracy for Singapore and Malaysian front license plates with good image.
Recognises letters A to Z, 0 - 9.
Generally personalised, cursive or other non-standard number plates will not be recognised.
 

Lane Coverage

Lane width of 2  metres for license plates that are centrally located.

Electrical Supply (Not Provided)

230V AC 50 Hz 200W

CCD Camera Specifications

1/2 inch format CCD Imager
C or CS Lens Mount
Double Insulation

Electrical
220-240VAC, 50 Hz, 4.5W
Sync: CCIR

Mechanical
Lens Mount: C or CS
Camera Mounts: 1/4-20, top and bottom.
Finish/Case: Off-white semigloss polyurethane, all-metal housing.

Dimensions and Weight (Less Lens)
182Lx64Wx54H mm
0.8Kg
Environmental
Temperature
Operating: -30 deg C to +55 deg C
Storage: -30 deg C to +70 deg C

Humidity: 0% to 95% relative, noncondensing
Vibration: 3g swept sine wave, 15 Hz to 2000 Hz
Shock: 50g, 11ms, 1/2 sine.

IMPS Basic System Installation Notes

Lighting

For night or indoor operations, fail-safe ambient artificial lighting (not supplied) will be required.
Minimum lighting of 800 lux is required for stationary or slow moving (15kmh) vehicles.
Care must be taken that the lighting does not shine directly into the drivers eyes.
The lighting must not be obstructed by pedestrian or vehicular traffic.
Lighting must not be reflected directly to the CCD camera.
Multiple source ambient lighting is preferred.

Camera Mounting, Housing and Cabling

Camera Mounting, Housing and cabling not provided.
Depending on the environment, the value added reseller would need to provide the appropriate mounting and housing (enclosure).

All specifications subject to change without notice.