Posts Tagged ‘ outdoor surveillance’



Security Systems With 8 Cameras

Written By:
Monday, June 21st, 2010

Security systems with 8 cameras can fulfill many of your security and surveillance needs. Many business and residential applications alike can provide complete outdoor/indoor surveillance by using security systems with 8 cameras. In addition, modern technology has yielded systems that are incredibly versatile such that they can be used for nearly every type of application.

A basic security system with 8 cameras consists of the 8 cameras, a processor digital video recorder or DVR unit with a CODEC application, and a monitor. The cameras are placed in their appropriate locations to provide the maximum coverage necessary to fulfill the security requirements for the system. A coaxial cable is run from each camera to the processor/DVR unit. Each camera has a small wire run from either a wall adapter or power distribution center to provide it with the electricity necessary to function.

The processor/DVR and monitor may be placed in a different location. For example, a retail store may have two cameras that cover the external perimeter of the store, five cameras inside the store, and one camera covering the cashier’s desk. The processing unit/DVR and monitor however, are located in the store’s office, away from public view. This provides a remote, usually more secure area for monitoring and recording the video from the cameras.

Security systems with 8 cameras are often referred to as “8 channel” systems. This basically means that the processor/DVR has the ability to receive 8 different inputs, usually simultaneously. In fact the processor/DVR is usually referred to as an 8 channel DVR and the power supply center is usually referred to as an 8 channel power distribution center.

If the coaxial transmission cable that is run from each camera to the processor/DVR is unsightly or difficult to install, there are wireless security systems with 8 cameras. These systems differ in that the cameras have their own on-board antenna which they use to transmit their video signal. The video is sent to a receiver unit using either the 2.4 or 5.8 GHz radio band technology. The receiver simply transfers the radio signal into an electrical signal and passes it on to the processor/DVR.

Since security cameras utilize the 2.4 or 5.8 GHZ band technology, their rated maximum ranges are based on Line Of Sight or LOS. An LOS range is the ideal distance between the camera and the receiver where the area between the two is not impeded by objects such that one can’t be seen from the other’s position. This does not mean that the camera and receiver must have a perfectly unimpeded LOS, however reception ranges will decrease based on the material that the transmitted radio waves must pass through.

There are several other features and options for a security system with 8 cameras. Each camera does not have to be the exact same model. Therefore, different cameras with different functions can be “mixed and matched” within the system to accommodate your security requirements. This and the fact that the system itself is basically a component system that allows a variety of different equipment features, makes the system incredibly versatile in application.

Here is a partial list of some of the many options/features available for the cameras:

  • • Cameras can be indoor or outdoor types
  • • Day/night vision cameras produce high quality color video in conditions with very little visible light
  • • Night vision infrared cameras produce high quality monochrome video in conditions of total darkness (under normal daylight conditions these cameras produce high quality color video)
  • • Audio recording
  • • Pan-Tilt-Zoom features that allow the camera to move to increase its field of view or telescopically enlarge the target
  • • Hidden or disguised cameras

The processor/DVR unit of a security system with 8 cameras can also have different features. The processor converts the cameras’ video signal into a digital video file. These files can be incredibly large and bulky which can make them difficult for the processor or the DVR to store. The processor/DVR uses a COmpression/DECompression or CODEC utility to reduce the size of the file while maintaining high video quality. There are several different CODECs available.

The DVR is much like the hard disk drive on a personal computer. Its size can range from a few hundred gigabytes to several terabytes. In addition DVD or CD drives may be included for archiving and copying video files.

A security system with 8 cameras can provide you with the security coverage you need and is versatile enough to be used in almost every situation.

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CCTV Outdoor Camera

Written By:
Tuesday, June 1st, 2010

 

cctv outdoor cameraA closed circuit television or CCTV outdoor camera system is used primarily for security surveillance. With today’s technology, the systems are user friendly and in some cases, can be installed and operational in a matter of hours. The systems can be hardwired or wireless. Several models are designated for indoor and outdoor use. However, cameras that will be used exclusively outdoors should be purchased with area weather in mind. Although, the cameras are designed for outdoor use, extreme cold or heat may have an effect over extended periods. For extreme conditions, you can purchase cameras that have built in heaters and cooling fans.

Any video camera that does not openly transmit a signal, but uses a dedicated receiver, can be considered a CCTV system. However, the term CCTV is predominantly associated with video security systems, which are used for surveillance purposes. Cameras on the system transmit to one or more monitors. Unlike broadcast television, where the signal is openly broadcast, cameras on a CCTV system only transmit to a designated set of monitors.

A CCTV Outdoor Camera System Can Be Found At

• Private Homes
• Banks
• Parking Lots
• Public Streets
• Casinos
• Industrial Complexes
• Apartment Buildings
• Hiking Trails
• Campgrounds
• Traffic Lights
• Airports

The list is by no means comprehensive and one must assume when in a public area they are under surveillance. As a rule, the monitoring is not targeted to any one individual. The CCTV system was invented in Germany in 1942 to monitor rocket launches. It was not until three decades later that the CCTV system was used for security purposes. The New York City Police Department was the first to use the camera system for crime prevention.

Primarily, a CCTV outdoor camera system is used as a crime deterrent. However, many law enforcement agencies use them in conjunction with facial recognition software to track known criminals. Thermal imaging or infrared cameras have been used by governments to monitor people coming into their countries to detect ill passengers. The CCTV system uses infrared technology to determine the body temperatures of disembarking passengers. Anyone with a temperature above normal might possibly have required additional screening before being allowed entry into the country.

In some instances, having cameras prominently displayed is not a deterrent. Therefore, airports, casinos and security checkpoints, for example, have security personnel whose only job is to monitor the cameras in real time. The security personnel would alert mobile guards of any problems they spot while monitoring the system. Small businesses and homeowners for the most part, would not conduct 24 hour monitoring of images in real time. High quality systems use digital video recorders or DVR’s that can continually record and archive images 24 hours a day. Lower end models might use a videocassette recorder or VCR. These require the user to change out the tapes every few hours. The users can still monitor in real time regardless of the status of the video recorders. Many small businesses to save money, would record over the previous day’s tape to prevent stockpiling tapes and to negate the need to purchase more blank tapes. This created problems if there were a need to view images recorded several days in the past. The images did not exist at that point.

Homeowners that are considering or have already purchased a CCTV outdoor camera system have security in mind. Owners want protection for their family and property. Having a quality system installed is a crime deterrent. The camera system will also provide conclusive proof of a crime, which greatly increases the chances of the offender being caught. The outdoor camera system can be one camera up to 16 or more. The number of cameras is largely dependent on the owner’s preferences, budget and size of the property. However, many models are quite economical and provide excellent security. You as a homeowner must decide on options such as pan, tilt, zoom, cctv outdoor camera on board heaters, coolers, two-way audio, recording in color and night vision. You also have the option of having a hard-wired or wireless system. Depending on your specific needs, some options may not be necessary.

A high quality wireless system can transmit up to a 1,000 feet. Lower quality or what are considered standard systems have a range between 300 and 500 feet. To give it some perspective a mile equals 5,280 feet or one kilometer equals roughly 3,280 feet. Large estates may require a hardwired system to ensure good image quality. Heavily wooded properties may also benefit from a hardwired system, as well. Trees, buildings and hills can interfere with the signal range. Cameras that advertise up to a 1,000 feet signal range may be less in reality. It is important whether you are having the system professionally installed, or doing it yourself, that you carefully account for these factors.

Hardwired systems require each camera be physically connected to the monitor. A video cable that transmits the video in many cases also supplies the power to the camera. This cable is usually called a dual use cable. The outdoor wiring must be protected to prevent tampering and to maintain the integrity of the signal. It is never a good idea to lay the cable along the ground. The wiring should be buried and sheathed in conduit suited for video cable. The cable will need to be protected as it enters the home, as well. Bury the cable up to the home and run the conduit up to a junction box that can be adequately secured. The cable must then be fed through the walls to the monitor.

The CCTV outdoor camera system must be weatherproof against, ice, snow, rain and mounted to withstand heavy winds. The cameras can be mounted on poles along the property’s perimeter. Ensure the cable is run inside the pole and not outside of it. Pole mounted cameras should have a bracket that extends the camera far enough from the pole to allow room for panning and tilting. Dome cameras can also be used if mounted properly. Dome cameras shield where the lens is pointing and the entire housing does not move with the lens as with box style cameras. Fixed cameras along the perimeter do not provide as much coverage, thus, there is a need for more cameras.

Fixed cameras can be used if they only screen visitors at a security gate. The camera is mounted to capture the faces of individuals that arrive in vehicles. In most cases, there would not be a need for panning or tilting. For maximum benefit, outdoor cameras should have night vision capabilities. This is particularly important for cameras located away from security lights along the perimeter. Many cameras have the ability to record quality images in low light. You can also use infrared cameras for areas with little or no light. Infrared cameras might be needed in heavily wooded areas where the overhanging foliage essentially blocks the sky. Infrared cameras have the ability to detect radiant heat from all objects, human or otherwise. Objects that do not give off radiant heat are ones with a temperature of absolute zero. The camera converts the heat signature into an electronic signal that passes through a series of components to develop a viewable image.

Typically, a room is designated as the monitor room. Because of the nature of hard wiring, the monitor must stay in a fixed location. The monitor can show one or multiple images at a time. Operators can randomly shuffle the images or fix and hold on one camera view. The camera’s options are controlled from the monitor room. Usually a joystick or the controls on the video recorder are used to operate the pan, tilt or zoom. Several systems have tracking capabilities. Once the motion sensor is tripped, the camera will track and automatically zoom in and out as the subject moves. Several systems can also be programmed to pan a predetermined coverage area. You may want a camera that just covers a driveway or access road on the property. The camera will only pan the roadway, trail or pathway per the programmed instructions.

cctv outdoor camera Wireless CCTV outdoor camera systems are very popular with many small businesses and homeowners. The system is easy to install and can be installed by the owner in most cases. The camera communicates with the receiver using radio frequencies specific to both devices. Many systems allow only four channels. This means you can only have four cameras, but you can purchase upgrades to extend the number of cameras to as high as 16 in some cases. The cameras can also be controlled by using your personal computer. Setting up the cameras is quiet similar to hooking a lap top computer up to the home’s wireless internet system using Wi-Fi technology.

The wireless cameras will require a power source. The system will include a power adapter for each camera. The cameras will be located outdoors so it is important that the cameras plug into a properly installed receptacle suitable for outdoor use. The cameras can be moved at any time as long as they are within range of the receiver. Most cameras will have a rechargeable battery pack. You can power the cameras with their batteries to cover a specific area for short periods, where there is not access to AC power.

The stated signal range of up to 500 feet for an outdoor wireless camera is based on ideal conditions. Therefore, the range is usually between 300 and 500 feet. The conditions include line of sight, heavy foliage, building or hills. All these things can interfere with the signal. Keep these conditions in mind when installing your system. Recommended options for your wireless system include pan, tilt and zoom for any camera that is located to cover a driveway or access road. Night vision is crucial, as well. When you or a family member is alone at night, or any time for that matter, it is important you have a clear set of eyes that can see beyond the front door.

It is recommended that you install a dome camera with night vision over the front door. The camera will monitor and record anyone near or at the entrance. It is important that you or your family identify visitors before allowing then into your home. The camera if mounted on the wall will have a limited coverage area. The camera should be installed on the ceiling of the porch or overhang.

Internet protocol or IP cameras can also be used with a CCTV outdoor camera system. Each camera has its own IP address and streams directly to the Internet. The server is usually a dedicated one for security purposes. The recorded data can be stored locally or by using a centralized video recorder. This allows multiple individuals access to the camera options and data. Using IP cameras allows you to install as many cameras as the network can handle. You can control the cameras, watch in real time or view recorded images from anywhere in the world. IP cameras are ideal for large estates, medium to large business or office and apartment complexes.

Whether they are hardwired, wireless or IP cameras the system is considered CCTV. The cameras do not transmit to anything other than their designated monitor, receiver or network server. Ensure the wireless system is properly protected against intrusions or signal interference. With today’s technology, the signal is usually shielded against interference by most common household devices. Wireless cameras use Wi-Fi technology and are connected to a home’s wireless network. Ensure you use the wireless provider’s encryption protocol. Typically, you are provided with an encryption key that must be used to connect any wireless device to the modem and or router for Internet access. Contact Security Camera Kings today to see if we have a CCTV outdoor camera that fits right for you.

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Wireless Night Vision Outdoor Security Camera

Written By:
Tuesday, June 1st, 2010

A wireless night vision outdoor security camera is a digital video camera with highly specialized features. Modern technological advancements have made these specialized features available at a very affordable price while offering high quality video images.

Outdoor security cameras differ from their counterparts the indoor security cameras, in that they are enclosed in a case that protects them from weather and environmental elements. Wireless night vision outdoor security cameras are often rated according to the protection that they offer. This protection is often described using an International Electrical Code standard called an Ingress Protection rating, International Protection Rating, or IP code. Most wireless night vision outdoor security cameras have an IP code of IP66 or IP67. IP66 means that the camera is dust tight and that water from powerful jets in any direction will have no harmful effects on the camera. IP67 means that the camera is dust tight and can withstand being submerged in water up to 1 meter in depth.

Digital video security cameras create images by using one of two special electronic sensor chips. Some digital security cameras use a Complimentary Metal Oxide Semiconductor or CMOS chip to create high quality color video images. Most wireless night vision outdoor security cameras use a Charged Coupled Device or CCD to create high quality color video using available visible light and high quality monochromatic or black and white video images using infrared (IR) radiation.

CCDs are highly sensitive to light energy known as photons. The CCD is able to transfer light energy into electrical energy in a somewhat similar process that a solar cell transfers sunlight into electricity. The electrical energy created by the CCD can be measured and digitally manipulated to create a video image. This is how a wireless night vision outdoor security camera creates high quality video in visible light conditions.

A wireless night vision outdoor security camera has a highly sensitive CCD that not only captures visible light but is inherently sensitive to radiation in the near infrared spectrum. This allows the camera to produce high quality video images in conditions of total darkness, with absolutely no visible light. These cameras contain an collection of IR Light Emitting Diodes or IR LEDs that surround the camera lens. The LEDs emit IR light that is not visible to the human eye, but lights up the cameras target area or field of vision like a flood light or spot light. Usually, the more LEDs that surround the camera lens, the farther the range that the camera can produce IR video in total darkness. Since IR radiation is not in the visible light spectrum, IR video is monochromatic or black and white.

Another specialized feature of a wireless night vision outdoor security camera is that it does not require a coaxial cable to transmit its video signals to the systems processor. “Wired” security cameras must be individually cabled to the processing unit. A wireless camera utilizes the 2.8 or 5.8 MHz radio band to transmit its video data by using an on-board antenna. The information is transmitted to a corresponding receiver that is normally located in the same area as the processor. After the receiver obtains the video signal it transfers it to the processor where a digital video file is created that may be viewed on a monitor or stored for later viewing or archival proposes.

Wireless night vision outdoor security cameras are available in different transmission ranges. The range is known as Line-Of-Sight or LOS. This means that the maximum transmission range stated for the camera is under conditions where there is an unimpeded line of sight between the camera’s antenna and the receiver’s antenna. Objects between them reduce the range, depending on the object’s size and material. Wireless cameras have LOS range capabilities of several hundred feet.

Additional features available for wireless night vision outdoor security cameras include the ability to record audio and the pan, tilt, and/or zoom (PTZ) functions. PTZ functions allow the camera to move in several directions and the zoom feature functions like a variable telephoto lens. These features can be controlled automatically or they may be controlled manually by remote control.

A wireless night vision outdoor security camera can be used anywhere that outdoor day/night video security and surveillance monitoring is needed. These cameras are often used for perimeter monitoring for both businesses and residents. In addition that can be used to provide monitoring for parking lots, driveways, and outdoor structures.

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8 Camera Outdoor DVR System with DVD Burner

Written By:
Monday, May 3rd, 2010

The 8 camera outdoor DVR system with DVD burner is a popular security system choice for applications requiring durable day and/or night outdoor security and surveillance. There are many things to consider when purchasing an 8 camera outdoor DVR system with DVD burner so let’s examine a few.

First, the 8 camera outdoor DVR system with DVD burner may also be referred to as an 8 channel outdoor DVR system with DVD burner. Usually, security camera systems refer to each camera as a “channel” hence the terms 8 channel system, 8 channel receiver, and so forth.

The cameras must be an outdoor rated type. This means it can withstand the forces of nature including extended inclement weather. Cameras of this type are normally rated as IP66 or IP67. This rating is the Ingress Protection rating based on an international electrical standard that specifies what the camera is protected against. The first digit following the IP, in this case “6,” means the camera is dust tight, that no dust can enter the casing or components of the camera. The second digit refers to the protection against water. A rating of “6” means the camera is protected from ingress of powerful water jets and a rating of “7” means the camera could be submerged in water up to 1 meter in depth.

Generally, outdoor cameras will be either night/day vision cameras or infrared (IR) cameras. Night/day vision cameras have a sensitive CCD sensor that can produce images in very low light conditions. Infrared cameras contain a series of IR emitting LEDs that surround the camera lens to illuminate otherwise dark or no light conditions. IR illumination is invisible to the human eye however the camera’s CCD sensor can detect IR radiation. Therefore, the LEDs work like invisible lighting, flooding the absolutely dark target area with a beam of light undetectable to the human eye.

Also, an 8 camera outdoor DVR system with DVD burner may utilize wireless camera technology. This means that the cameras transmit their image to a receiver using either the 2.8 GHz or 5.8 GHz band without the need for transmission cables. This can be incredibly beneficial in placing cameras in locations that are difficult to reach using cables or in concealed areas. A wireless 8 camera outdoor DVR system will also need an 8 channel receiver.

Regardless of the type of camera, this system will also include a Digital Video Recorder or DVR. The DVR is basically the same device as the hard drive in a personal computer. Once the camera has transmitted the signal to the system, the DVR stores the images or video in a file on the hard drive. Generally, an 8 camera outdoor DVR system with DVD burner will require a high speed DVR along with some sort of compression technology.

Since 8 cameras are producing video at once, the incredibly large file size of the digital video would exhaust the useful space of even the largest capacity DVRs. So, file compression technology, software or hard-wired circuit boards, are used to compress the file size while maintaining the image quality while maximizing hard drive capacity. The DVR saves the image until the disk is filled and when it reaches its capacity, the DVR continues recording over previously saved data.

One of the benefits of an 8 camera outdoor DVR system with DVD is the DVD recorder itself. These systems normally contain on-board or internal DVD writers. These are excellent for backing up image files. When a DVR is getting full, a DVD can be burned for archiving purposes before the DVR begins to re-write itself. Also, another added benefit of a DVD writer is to produce back-ups or copies of certain image “footage” to provide to police departments or when needed as evidence.

Understanding the options available for an 8 camera outdoor DVR system with DVD recorder will help you make an educated, useful purchase that will fulfill your security and surveillance needs.

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