CCTV_GAS_STATION.pdf

8/12/2019 CCTV_GAS_STATION.pdf

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Surveillance system for gas station

CORE OF THE PROBLEM

The crimes most often committed on gas station are drive-off gas thefts and lifts of various car

accessories or other things being sold at the station. An increasing number of armed robberies at the

stations is related mostly with relatively big sums of money, collected in cash registers and safes,

and inadequate protection of those places. Small number of employees - often one person, and big

distance from the police station or monitoring center make the stations an easy aim for commonthieves and organized criminal groups.

An alarm system protects the station mainly from burglaries, but not from direct thefts, happening

during opening hours (often round the clock), when every potential disturber may come in. Apart

from thefts of gas and offered goods, there should be taken into consideration possible stealing from

customers’ cars and acts of vandalism.



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Other infrastructure of gas station

Even medium-size gas station usually offers shopping, car washing, minor repairs etc. Monitoring of

all the places requires mounting a number of cameras and multiplexer/DVR or similar CCTVcomponents enabling simultaneous viewing and recording of all areas. Another solution may be

provided by detailed observation of doors (there are usually one or two in each place). One should

apply there cameras with short focal length (big view angle), installed directly above the door.

Obviously all station lenses should be equipped with automatic irises, to avoid overexposing by

sunlight or the light from headlights.

A typical installation made according to the above guidelines, may be the following:

Example of surveillance system for gas station.

Exit Entrance

Shop

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3

4

5

6

7

8



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EQUIPMENT SELECTION

• Camera no. 1 -, observes entrance to the station • Camera no. 2 - observes exit from the station

• CCC1390 Series Day/Night, WDR, CCD Compact Camera 1/3-INCH, HIGH RESOLUTION,530 TVL B-W/480 TVL COLOR (NTSC/PAL)

• EH3512-2 EH3512/EH3515 Series Enclosure • 13VD5.5-872.5 13VD Series Varifocal Lens

• SS3508/SS3512/SS3515 Sun Shroud

• Camera no. 3 & 4 - observe the first two pumps, • Cameras no. 5 & 6 - observe another two pumps,

• CC3751H-2/CC3651H-2X Digital CCD Color Camera LOWLIGHT DSS, 1/3-INCH, HIGHRESOLUTION, 480 TVL (NTSC/PAL)

• EH3512-2 EH3512/EH3515 Series Enclosure

• 13VD5-40 Series Varifocal Lens SS3508/SS3512/SS3515 Sun Shroud

• Camera no. 7 - observes cash desk and entrance to the station building, • Camera no. 8 - observes other rooms in the building

• CC3701H-2 Series Digital CCD Color Camera 1/3-INCH, HIGH RESOLUTIONWITH EDR, 480 TVL (NTSC/PAL)

• 13VD Series 2.8–12mm Varifocal auto iris lens • MOUNTS BS1750/CM1750/CM1750S/TB1750

CCC1390 CC3751H-2 CC3701H-2

EH3512 LENS MOUNTSBS1750/CM1750



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Next cameras, up to 16 - observe other important places: parking lot, restaurant, car wash...

CCC1390 Series Day/Night, WDR, CCD Compact Camera 1/3-INCH, HIGH RESOLUTION, 530

TVL B-W/480 TVL COLOR (NTSC/PAL) camera is a compact, wide dynamic range (WDR),

day/night camera. Its WDR technology provides up to 60 dB of dynamic range and produces

superior images over a wide range of lighting conditions, including extreme backlight conditions. The

camera also uses a removable infrared (IR) cut filter to switch between color and black-white (B-W)

modes as environmental lighting conditions change. It also provides a dual resolution of 530 TVL (B-W) and 480 TVL (color). Ideal choice to monitor objects day or night and with distance up to 50

meters.

CC3751H-2 Designed and manufactured in the USA, the CC3751H-2 and CC3651H-2X color

cameras have extended digital slow shutter (DSS) settings to enhance the low-light performance of

the camera. DSS settings slow the picture frame rate and increase the camera’s sensitivity in low

light conditions. Light sensitivity increases as the number of fields of integration increase.

CC3701H-2 Series is a high-resolution, high sensitivity, general purpose digital camera with 480 TV

lines. The camera features two color balance settings, automatic gain control, digital signal

processing, automatic backlight compensation, and line lock. To adjust one of the camera’s manyfine-tuning features, just reset the corresponding DIP switch, readily available on the left side of the

camera. Utilizing innovative technology (patent pending), the CC3701H-2 Series camera provides an

extended dynamic range over conventional high resolution cameras, without sacrificing sensitivity,

color imagery, or resolution. Extended dynamic range (12X) allows the camera to provide a picture in

many extreme light applications.

Cameras with SWD sensor are resistant to over exposure of images caused by strong light,

including front, reflected and rear excessive illumination.



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VIDEO RECORDING

Another step of system's design is selection of devices for recording and playing back the recorded

video material and watching live and recorded images from cameras. Direct viewing and playing of

recorded video may be performed from selected camera or simultaneously from a number ofcameras (multi-screen or screen division).

Digital video recorders with network functionality are nowadays the main platform of digital

surveillance systems. They are easy to install and run, and enable remote viewing of images and

control of the whole system via the network.

Digital surveillance systems based on DVR cards. (capture boards) These sets consist of

special DVR card for installing in PC and dedicated software pack. It's difficult to prove superiority of

one system over another. These devices have their advantages and disadvantages. However,constant cooperation between producers and installers of these systems enables development of

the software and new functions, which makes the systems more flexible and reliable.

The cards coming from various producers differ in applied integrated circuits, ability of extension and

cooperation with additional devices. Most of the systems offer Internet connectivity. The basic

software usually allows for:

• direct viewing and archiving of video - Server application • viewing live and recorded video via the Internet - Client application • playing recorded video - Browser application

It's important that these systems don't require a "super computer" for their operation, but the

computer must be intended only for supporting the surveillance system. There is no possibility of

simultaneous running of other programs; otherwise the system may not work properly.

Here is example of real live 16 channel digital video recorder can be used:

Camera Input Up to 16 composite video camera, NTSC/PAL

Frame Rate Up to 480 fps (Real-time, all channels, all models)Recording Resolution 352x240, 704x240, 704x480 (NTSC) / 352x288, 704x288, 704x576

(PAL)

Video Compression MPEG4 hardware compression

Non-Stop Recording 15+ days or more of non-stop recording time depending on chosenhard drive configuration

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