Posts Tagged ‘ Infrared Cameras ’

Home CCTV Cameras

Friday, November 4th, 2011

Home Cctv Cameras and a home camera digital video recorder or DVR could be exactly what you need to acquire the peace and comfort of twenty-four hour seven days a week security and surveillance.  Technological improvements have reduced the price of Closed Circuit Television or home Cctv camera monitoring so that not only can businesses enjoy their benefits but the average homeowner can as well.  Not only is a home Cctv camera system with DVR affordable, but it can also be accessed whether you are at home or on the road.

What exactly what as a home Cctv camera system with DVR?  It is a group of individual component devices that work in tandem to provide constant monitoring of your home both inside and outside if desired, and at the same time record this monitoring for future use.  A typical home Cctv camera system consists of 1 to several cameras, a processor or CODEC/capture board, and a digital video recorder or DVR.  There are many variations and additions available for this basic description.  Let’s take a look at each device within the system and see how it can work for your home.

The first device to consider for a home Cctv camera system is the security camera.   There are various types of cameras with many additional functions than simply recording video.  However, the basic camera is a digital, color camera that can capture still digital pictures or motion video.  Security cameras have different resolutions, focal lengths, fields of view and other characteristics.  To determine what functions need to be included on your cameras, talk with one of our digital security experts.

Most of today’s digital security/surveillance cameras are so sensitive that they can capture images not only in broad daylight, but in situations where there is very little available light.  These cameras are called day/night cameras and they contain a very sensitive electronic chip that allows them to function in conditions with low light.  On the other hand, if you need a security/surveillance camera that can “see” in total darkness, those are available too.

Infrared or IR cameras can produce black and white images in total darkness.  They do this by projecting an infrared light from around the camera lens at the target area.  This light is invisible to the human eye but is the equivalent of a spotlight to the IR sensor in the camera.  These cameras are excellent for use in monitoring nursery rooms and other indoor rooms at night, dark driveways, garages, and other areas that have no existing light.

There are also security/surveillance cameras that have a pan, tilt, and/or zoom function.  These cameras have the ability to move sideways, up and down, and telescopically zoom in on activity, all automatically if needed.  These are excellent for monitoring large areas such as large yards, farm land, and other large places.

Digital video is basically many digital photographs taken within just one second.  This creates the illusion of motion and this is how motion pictures are created.  If you consider the size of a file for just one digital color photograph, it can be fairly large, so taking several digital photographs a second can add up to a really large file size in no time.  This is where the processor, capture board, or CODECs (CODEC is an acronym for COmpression/DECompression) are needed.  They process the digital data gathered from the camera, then compress the digital file’s size so the digital file is much smaller without sacrificing the quality of the video.

Finally, the processor sends the final digital file to the DVR.  A home Cctv camera system DVR is actually the same thing as the hard drive on a personal computer.  It stores the digital file continuously until the hard drive is full and then re-records new video from the beginning.  If necessary, data can usually be copied to another device if needed for distribution.

A home Cctv camera system DVR also has the versatility of being viewed from almost anywhere in the world.  Today’s systems can be networked over the Internet making accessibility possible anywhere that Internet accessibility is possible.  This is particularly useful if you travel a lot or are away from home for an extended period of time.  This can also provide you with 24/7 monitoring by a security/surveillance and alarm monitoring service.

As you can see, there is a home Cctv camera system for just about any application.  Talk with one of our digital security experts today to get your custom designed system.



8 Camera Dvr

Monday, October 24th, 2011

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

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

If you are using an 8 camera Dvr with outdoor cameras, the cameras must be an outdoor rated type.  This means they 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.  Regardless of the type, this has no effect on the operation of the 8 camera Dvr.  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 Dvr system may utilize wireless camera technology.  This means that the cameras transmit their image to a receiver using either the 2.4 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 if the DVR is going in a concealed area.  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 Dvr system will require a high speed DVR along with some sort of compression technology.

The compression technology is often called a CODEC, short for COmpression/DECompression utility.  Its job is to shrink the size of the enormous video file while maintaining good quality video images.  Security Camera King uses the latest most efficient CODEC available in their 8 camera Dvrs and it is known as H.264.

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 Dvr system is that it contains a CD/DVD writer.  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.  If you have any additional questions contact one of our security experts today.  We love to help!



Infrared Bullet Cameras

Tuesday, May 10th, 2011

Infrared bullet cameras are just one of the varieties of camera that can include high quality infrared technology video images.  Bullet cameras are made for use indoors or outdoors which makes them a fairly versatile component of a digital video security system.

There are three basic types of digital video cameras based on shape, and so named because of their shape.  They are the box camera, the bullet camera, and the dome camera.

The box camera is basically a rectangular shaped body with no lens, no weatherproofing, or mounting hardware.  At first, this may seem as a disadvantage for box cameras however they are made this way on purpose.   The lens, housing, and other add-ons give the box camera its versatility because by adding these things you can customize the box camera to meet your particular situation.

The dome camera is not a new idea, however the technological advancements in computers and other electronics have allowed the camera to be placed inside a relatively small dome; and that is new.  Dome cameras come in indoor types or indoor/outdoor types.  They too can use infrared illumination for creating highly detailed images in total darkness.

Infrared bullet cameras are so named because their shape appears like a large bullet.  Bullet cameras are normally indoor/outdoor by design and are usually set up for infrared video capture as well.  Bullet cameras are normally used in low vandalism areas as the cameras are easy to reposition and are not vandal proof.

bullet cameras are normally encased in a weatherproof fashion so no extra weatherproof housing is required.  Infrared bullet cameras normally have plenty of room between the lens and the camera casing for placing infrared Light Emitting Diodes or LEDs.  The infrared light produced by these LEDs works like a flood light lighting up an entire area.   However, humans cannot see this part of the electromagnetic spectrum so it doesn’t appear to us as anything at all.

Generally these LEDs are placed around the lens inside the bullet casing but there are some models that come with a sidebar of IR LEDs or are attached to illuminators that look just like the bullet camera.  However, there is no camera in the illuminators at all but rather a great amount of LEDs for night time applications.

This brings us to an important side note.  Every infrared camera has a range in total darkness.  The range is normally based on the amount of infrared light IR LEDs can shed in an area and how far they will reach.  Almost every infrared camera including infrared bullet cameras usually list an infrared range in their specifications.  Make sure you check the IR range on a camera before purchasing it to save you a lot of grief.  You don’t want to purchase and infrared bullet camera with a range of 30 feet when the subject you are capturing is at 50 feet.

Security Camera King has several different models of infrared bullet cameras for you to choose from.

Product# OB-LX420IR50

This is a 420 TVL resolution camera with and IR distance maximum of about 65 feet.  It utilizes 23 infrared LEDs and is encased in aluminum.  It comes with its own board lens which is 3.6mmat F2.0.

Product# OB-LX550IR120

This is a high resolution, 550 TVL weatherproof infrared bullet camera that has a maximum IR distance of about 120 feet.  This camera is about the middle of the road for resolution.

Product# TPB-70IR48

This is top of the line as good as it gets for resolution.  This camera is rated at an astounding 650 TVL during daylight hours and 700 TVL at night and has and IR range of approximately 120 feet.

Product# OB-LX550IR150L922

This is another middle of the road resolution cameras touting 550 TVL and an IR distance of 200feet.  One of the major differences on this camera is its built in varifocal lens.  At 9 – 22 mm the varifocal lens allows you to get a very tight shot.

Product# SVB-60IRC28L3516D

This camera has a 550 TVL color (daytime) resolution and a 600 TVL black and white (infrared nighttime) resolution.   It also comes with a wealth of features such as Wide Dynamic Range, On Screen Display, and backlight compensation.

Product# TPS-QLBAZ1

This is another top of the line camera.  It features 650 TVL, auto zoom, and true day/night color at night video.  This camera does not fall into the strict definition of infrared bullet cameras as it uses available light to create its video images.