This CCTV Buyers Guide provides an overview of the implementation of a video surveillance system for success in your business or residence. This guide contains useful information for designing video surveillance system, choose products that best fit your requirements for CCTV system, and helping to install the important decisions that will save you time and information is derived from the implementation of money.The 100 CCTV's collection systems and call centers that respond CCTVquestions about business and residential customers. This guide combines the information from past projects CTV and give readers an advantage in the successful CCTV project
There are many details to consider when the declaration of the corresponding system of CCTV cameras. Professional Video Surveillance is not an economic effort and a budget presentation and the best system should be considered. This guide will help beginners to the review of CCTV and copper for their CCTV recording systemand the needs of video surveillance.
The first task of a successful CCTV project, CCTV is the key to clarify the objectives.
o How many cameras are required?
o What are the main FOV (Field of view (s))?
o What are the entry requirements?
o What are the lighting conditions at each location camera?
o How should I use for monitoring live video or other video screen?
or how long you need to watch video files to keep?
There are cameras specific cameras from FOV selected according to the light, and the mounting position of the camera. There is no such thing as a one size in the successful CCTV project. It 'important to see that everywhere camera and the camera is more suitable for the selected location.
Answer the following questions:
Within or without the O?
or light (during day and night)?
installation or else?
Indoor Dome Camera
The interior> Dome cameras are used in 90% of the total in the programs. It comes in a variety of configurations, including standard color, day / night, and infrared versions. Can be mounted on a horizontal or vertical, but is typical ceiling mounted. Choice of Camera Lens Dome programs can reduce its use in some as little more than a 20mm lens camcorders. Dome is a primary choice in place internal camera.
Digital Camera
A box cameraA standard camera, which can be mounted alone or in a room. The camera uses a separate box lens that screws onto the surface and provides flexibility for different requirements FOV and sold without a lens. An auto-iris lens, a small cable that connects to the camera for iris control in various light conditions.
Outside the Cathedral
Outside the cathedral is usually difficult to keep track of casings that have the same roof vandalversatility in a variety of lens options. Day / night, with no dome cameras are widely used in applications requiring input and output with limited lighting at night.
Day / Night Camera
The day / night camera is the best choice for low light conditions. The cameras are standard color during the day, day / night shifts or mechanically from a digital camera on a low-lux mode B / W.
Infrared
During No-LightInfrared cameras provide infrared illumination of FOF and monitoring of areas without electricity. Te IR LEDs lit and the camera automatically turns B & W low lux camera mode with views of total darkness.
PTZ Camera
Pan-Tilt-Zoom lets you see in all directions and the optical zoom if necessary. PTZ cameras including standard color, day / night mode, and some IR PTZ cameras have been made Recently. The operator of CCTV, PTZ cameras to automatically rotate FOVS different. Options include Auto-tracking applications that dynamically objects in defined areas.
About Room Technology
Sony CCD is the dominant element in the video security cameras now. Sony makes some cameras, but just the CCD market. Do not think that Sony makes the camera as "Sony 1 / 3" Super HAD Camera ", as many suppliers advertisingCamera>. The camera has a Sony CCD, but camera is not by Sony, and almost every camera brand there. Important factors affecting the quality of the lens, and vari-focal auto-iris capability, the quality of the camera housing or enclosure, and the optical lens is the difference between a professional CCTV camera.
FACT: 's
o If you purchase a $ 80 camera, you get an offer of $ 80.
or 480 TVL minimum requirements of a professional CCTV project.
OPositioning the camera lens and the right is the key to the quality of video recording
Light, love and thieves hate the light! Add lighting wherever possible
Camera Enclosure
Box can be loaded into a variety of fields. Outside the camps in cold climates need a block heater / fan that keeps frost and condensation on the lens and the camera. Heater / fan are commonly 24VAC and should be considered in selecting CCTV powersystem.
Location Room
Mounting position of the camera is crucial to effective implementation of the CCTV project. 'S should be mounted as close as possible to the visual field is necessary, and as the camera to the subject, the better identification of the subject will be. Proper lens selection than the location of the camera and the required FOV is critical to image quality.
Digital Video Recorder
DVRs are an important part of any successful CCTV project.Video resolution is increasing, shooting speed is accelerated, and video data compression is to reduce the size of the video data file. Terabytes of storage is increasingly common in many CCTV applications. Network or remote control of CCTV video is standard in all professional DVRs on the market in 2007 and video distribution over a LAN, WAN and Internet, DVR a new market outside of video security, known as business activity monitoring systems in their management companies monitorin large companies 24 hours a day. Not only a security video recorder, the DVR company is a management tool for remote monitoring applications.
To correct for any DVR application to select the following questions must be answered.
o How many channels (cameras)?
or that the recording speed is needed?
or how long video files (Hard Drive Size) to maintain?
o What features are important to the program?
o WhereDVR system will?
or remote control requirements?
When choosing the right DVR for your CCTV application that are 24 months to determine the amount of cameras needed now and later. DVRs are available in 4, 8, 9 and 16 channel stage and this election is critical because adding cameras above the DVR channels available will be an extra DVR, not just additional channels. DVR systems in large plants is divided into 16 channelsdevices and can be monitored and controlled from a central management system.
The speed of the investigations are critical to many CCTV applications. 30 fps (frames per second) are considered as real-time video, which is 30 fps for the application, 480 fps for 16 channels and 240fps for 8 channels are required. CCTV provides many applications in real time (30 fps) live viewing of video channels and 15.7 fps for recorded files. And 'acceptable to 7-15 fps for recorded files in manyapplications, but technology in DVR systems has pushed real-time video to the masses and 30 fps recording will soon be standard recording for all channels available today.
Storage control file is much easier and profitable in 2007 than in the past. level of DVR storage terabytes are common and run faster and more reliable service. Storage of video data file can be managed by corporate IT departments as business-critical data and network drivesThe archive is common. All top DVRs have USB ports for external storage devices and video servers are common LAN. A key component of any DVR system is the ability to open video files. The software that the manufacturers of DVRs are owned by the DVR and the ability to receive files in chronological order or according to certain security events is essential for the DVR product.
Standalone DVR PC-based vs.
Standalone DVR, most videorecorders sold until 2006. DVR-based computer has become increasingly popular due to the cost and features provide the latest generation of DVR cards on the market in 2007. Windows XP PC, is that the reliability and performance of today's DVR systems for mission critical video security requirements. The open system architecture PC-based DVR can be easily integrated into the corporate network and technology upgrades at the component level.Software upgrades and hard drive storage additions are far cheaper than the DVR ownership. Standalone DVR integrated recording systems usually work with the Linux operating system. The DVRs are widely used in independent security retail sites and provide reliable video recording for 4-16 channels. Most DVRs on the market offer network remote access and CD-R / W archiving.Computer-based DVR systems are reliable, fast, and has many advanced applications, not on standalone systems.
Videocompression
MPEG4 and H.264 video compression elections in 2007. In short, a good MPEG4 and H.264 is better. The key to video compression is the resolution and size of the video. A high-resolution video files are monster size files and video compression for storage and streaming is critical for all video applications. major advances in video compression will be seen in 2007 and H.264, the codec choice for DVR manufacturers.
H.264
This use of the latestinnovations in video compression technology, high resolution video quality to offer, from the smallest amount of video data is necessary. Smaller files will save bandwidth and storage costs over previous generations of video codecs. H.264 delivers the same quality as MPEG-2 to one third to half the data rate and up to four times the size of MPEG-4 Part 2 of the speed of the data. H.264 video equipment is used in the latest high-definition video equipment, DVD and Blu-ray should be consideredA professional CCTV project.
Access to the Network and Remote Viewing
Network access is the ability to remotely monitor a video server network, WAN or Internet. A very important question for any DVR system is the ability to monitor and direct access to recordings remotely. Most days a DVR RJ45 LAN connection that allows the VCR to be connected to the LAN like any other computer in the office.
DVR Advanced Features
Many CCTV systemsfree security features and special software to improve security. These include:
or object when
O POS Integration
O PTZ Auto-Tracking
O Face
or integration of access control
Act V cables and system layout
DVR Location In choosing the optimal position for the DVR a framework, the area of access to centralized management and security in the region. DVR is the heart of the system of CCTV andmust be protected to ensure it is safe from theft or damage. If security problems include the theft of the DVR component, all the tests, conducted under the arm of the thief. And the thieves know this, then set the DVR system is in a "lock-box or a place of safety.
Camera power supply
All professional cameras or 12VDC or 24VAC. Both power options are acceptable and some CCTV systems require both. Feeders are centralAvailable in 4,8,16 and most channels.
Cable Options
Traditional video cable is RG59 coax cable. Conjunction double cable is generally used to attract RG59U with a pair of wire 18 meters of the camera may require. The two cables can run a cable to each camera for both video and power.
Cat-5 Options
UTP (twisted pair) cables are still popular with Cat-5e/Cat-6 cables used in networks. CAT cabling is lighter and less expensive coaxialcables and connectors required balun, impedance of the video signal to adjust. Coax and UTP connections to1000 feet are acceptable. A balun is used for impedance on Cat-5 connections to the DVR and camera connections to adapt.
The successful CCTV project
or Quality level
Quality programs or
or Quality DVR
or Quality Installation
Author: Steve McNeal
AMA Security
17/02/2008
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