System of security cameras Guide 'purchase real estate

System of security cameras Guide 'purchase real estate Although the application of CCTV security have not changed much in recent years, the tools and equipment are. Surveillance cameras became smaller, cheaper and better, but the important thing happened in recording equipment. Therefore many customers shopping for complete CCTV recording and monitoring systems are confused by verifying that the products available. The aim of this article is to guide buyers toward best and most economical type of equipment, closed circuit television, on the basis of intent and application requirements. The right to select the surveillance cameras. It 'almost impossible to describe all types of cameras, closed circuit television in this short article. We will focus our attention on the most popular and widely used camera types instead. CCTV security cameras produce images using CMOS or CCD (Charge Device partner), the chips. Small, very low price CCTV cameras usually use CMOS technology, the production of poor image quality and light sensitivity is very low. Decent quality CCTV cameras use CCD technology. The size of the CCD chip is normally 1 / 4 ", 1 / 3" or 1 / 2 ". As a general rule, the larger the size, the better the image quality produced and the highest price. However, higher density of 1 / 4 "and 1 / 3" CCD chip capable of producing an image as well as many of 1 / 3 "or 1 / 2" chip. The number of TV lines in the image on the security camera is a measure of image resolution (sharpness). The greater the number of TV lines, the better the resolution and, therefore, the overall picture quality. Standard resolution camera may have 350-380 lines, over 400 TV lines is generally considered good resolution while over 500 TV lines is considered high resolution. B / W chip cameras produce greater resolution and better light sensitivity, and suitable for use in dark areas where light conditions are poor most of the time. In addition, the color cameras offer more realistic and natural picture. CCTV cameras usually divided into different types according to the camera body used. Professional-grade cameras. Box type in the body have the ability to use different types and sizes of the lenses. Interchangeable lenses let you control the camera from any remote objects. Even if for inteal use, which can be used outdoors when combined with a robust housing. Are considered the most flexible and widely used by professionals for commercial applications. Bullet cameras. Bullet cameras are, as suggested by the name that appears in the form of bullets inside the house. Most cameras are bullet resistant and sealed without the ability to use different lenses. Great advantage of bullet camera is the small size and integrated design, some by gunfire, and the infrared LED cameras are built in the future. Infrared technology is simply LED light in infrared spectrum (not visible to the naked eye). This light will illuminate viewing area, making it possible to check in complete darkness. This is a great future, but only works up to a certain distance (usually between 10 and 50 feet depending on model) Vary simple to install and designed estheticly, point cameras are the ideal choice for residential and do-it - te in which the monitoring equipment items are about 25ft from the camera position (with standard lens of 3.6 mm). Council chambers. Board Cameras are basically fixed lens mounted on a circuit. These cameras can be packed in one case (Mini Cameras) or dome (Mini Dome) or simply sold unpackaged, for mounting by the buyer. Lenses of these cameras are of normal industry aperture or a "hole" in the very small aperture lens. Dark lens cameras are often called "spy" cameras and can be mounted in a hidden form of surveillance operations. The most popular board cameras hidden smoke detector and motion cameras. Since the lens board cameras are pre-assembled with an iris and usually of short focal length (ie wide angle), the flexibility of its usefulness is limited. However, this type of camera that can provide low-cost solution for the situation, especially in a family environment. We have just described most popular types of cameras, allows hours of discussing how and where they used the mites. Type of professional cameras with C / CS mount lens attachment generally offer better performance and more important in the long term, as the goal of controlling production, Back Light Compensation and many more? Remote monitoring of the objects to the camera is not a problem, which is why the ability to select different lenses, based on the position of the camera is so important. Installation is a little 'complicated and strongly recommends professional installation. We recommend this type of security cameras for commercial applications. Most of the cameras point in the comparison, do not offer high resolution and lens selection flexibility, but can be bad weather, some are equipped with infrared light, and most of all those that are relatively easy to implement. Bullet cameras usually come with 3.6 mm lens witch are considered suitable for most installations (good for covering small and medium-size room or equivalent). For rooms larger or longer distances, cameras with lenses of 6 mm or greater is required. They are the ideal choice for any do-it-yourself installation. Board camera, by contrast, are widely used in plants with hidden cameras, sometimes called Spy Cameras. Many wireless cameras are basically board cameras with built-in transmitter. We will not enter hours wireless cameras, which would be enough material for completely new article. Board cameras are sold as a single circuit board, to integrate the devices into the camera hidden. Also available in dome housing, change or popular dome camera with integrated smoke detector, motion detector, the output and so on. Most board cameras with 3.6 mm lens, although some will allow the target to be replaced. Over time, most practical design has been Dome Camera with its appearance that blends into surroundings, especially in a sealed box, ideal for use in stores, lobbies, train stations and other public places. Practical solution for the plant are also hidden motion detector and smoke chamber, which is absolutely no substitute for the security alarm or fire protection. Cameras should always be chosen depending on the position of the camera (inside / outside), distance from the subject of surveillance, lighting and the budget. When the purchase of security cameras, customers are faced with the fact that you must select one or another recording device. The day of the well-known CCTV time-lapse video recorder are almost over. Although some customers still prefer this old recording, it is worthwhile to invest extra money to buy a good quality of digital video recording (DVR). Digital recorder transfers analog camera video feed into a digital format and stored on the hard disk. There are two main types of digital recorders on the market right now. PC-based CCTV systems. A special board and software installed on your computer will allow camera inputs and store video on the hard disk. Many people are under the misconception that personal computer with additional hardware installed, will work. This explains the hundreds of companies that have hung a sign, some ads and begun working on cellars and garages, holding to be DVR manufacturers and safety specialists. The main problem with this type of camera recorders is the main component of the same? Yes, it's a computer designed to do unlimited tasks, but not beyond. The truth is that a group of digital video recorder is, and will always be vulnerable to software crashes, hang-ups, system instability, problems of viruses, etc.? Autonomous systems. Very similar in appearance and control functions to the VCR recorders, are truly remarkable devices. Most video processing is performed by hardware, therefore eliminating system crashes, the video is also stored on the hard disk in digital format. The base operating system, usually Linux, is permanently stored on special processor, which is impossible to overwrite or corrupt. Designed and manufactured with single application in mind, it is much better in terms of performance and reliability to its rivals, based on a PC. Some DVR systems including the ability to remote control, useful when the control is needed in different places through the Inteet or a network. More important for the future when choosing a DVR recorder are motion detection and frame speed. The higher the speed of video recording easier. Motion detection will allow recording video from each camera only when motion is detected is great for extending video recording time. Monitor security. Security video recorder could be displayed in a standard TV monitor. Very well done in this way, for monitoring or child residential application, if the picture quality is not as important. However, for professional installation, security monitors are as important as cameras. That offer extended life of picture tube (necessary with any image, which can cause erosion of the image) and much higher resolution. Cables and wiring. Finally any camera installation will require proper wiring. Video cable of good quality to avoid the degradation of long-distance tracks. It is recommended to use RG59 or RG6 coaxial cables, which is fully protected and avoid the loss of video up to 400 meters of coaxial cable and BNC connectors require proper installation possibly done by experienced technicians. In short, it is not plug and play cable with BNC connectors installed at the factory can be used (up to 150 feet). The plug-and-play cables are fairly easy to install, not users. Cables CCTV camera consists of two cables bundled in one jacket. A video and a power cord. Conclusion. Every system of closed circuit television is so good and reliable as its weakest component. With this in mind, investing in high quality and performance cameras, while purchasing low performance recorder, from an economic and not just a practical sense. Why, for example, cameras with 500 TV lines of resolution with monitor that offers only 380 or less. All the advantages of high-resolution camera is affectively sacrificed by limited ability to control. Asking questions is important before buying a video security system, and your provider will probably be able to provide more details and recommend equipment for specific needs and requirements. About the Author Robert Moskal is Technical Department Manager at V2Comp, Inc., a leading distributor of surveillance cameras and systems, closed circuit television located in the Chicago area. More information about new products or can be accessed at