Posts Tagged ‘ box cameras’



Box Security Cameras

Written By:
Friday, August 5th, 2011

As a ‘carry-over’ from the days of analog video security, digital box security cameras still exist today.  However, today’s box security camera has such great versatility and flexibility in function that it remains as one of the most popular if not the most popular digital video security camera in use today.

Box cameras are incredibly versatile in use because they come as basic camera bodies with no lenses, mounting hardware, or weatherproofing.  This provides versatility yet allows you to customize each camera for the environment in which it will be used.

Security Camera King offers three basic models from which to choose.  We’ll examine each of these models after we briefly describe how a digital video security and surveillance system works.

Box security cameras are just one component of a digital video security system.  The other two major components are the Digital Video Recorder or DVR and the monitor.  These systems are usually component systems meaning that the equipment components are somewhat standardized so that one manufacturer’s camera will work properly with a different manufacturer’s DVR and so on.  THis alone provides a working atmosphere for powerful systems with great versatility in use.

In a basic digital video security system, the camera’s responsibility is convert reflected light waves of images into electronic images such that they may be stored on a digital storage medium or monitored in real time.  Box security cameras work great for this purpose.

The camera has a lens that has a particular field of vision (the area that the lens can “see”).  The function of the lenses is to gather the reflected light image and focus it on a light sensitive chip that is about 1/4 inch or 1/3 inch square.

The sensor used is either a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor or CMOS.  Although these chips work a little differently, they produce the same results; electronic pulses that can be measured and used to create digital video images.

After analyzing the results of the sensor the electronic information goes through several electronic Integrated Circuit chips (IC chips) to improve quality, correct white/black balance, and many other fine tuning options.  The signal then travels through an analog to digital IC chip that converts the data into total binary or digital information that is then sent to the DVR via a video transmission cable.

The DVR further processes the data by running it through a COmpression/DECompression or CODEC utility which shrinks the size of the large file but maintains quality of the video footage.  The latest and most efficient CODEC in use today is the H.264.

Now, considering the above process, we can see how plain box security cameras become so powerfully versatile.  They can accept a variety of lenses with a variety of focal lengths which means they can provide a shot that could range from a wide angle shot to a zoomed in telephoto shot.  They can be used indoors with no weatherproofing or used outdoors with weather proofed housings that protect them from the elements.  Finally, if the camer is used indoors an economically priced standard mounting bracket may be used; outdoors the previously mentioned weather proofed housing has its own mounting bracket.

Security Camera King offers three different models of box security cameras from which to choose.  The following is a summary description of each.

 

600 TVL SUPER HIGH RESOLUTION WIDE DYNAMIC RANGE

Product# BC-EL600

This is one of Security Camera King’s elite series products and comes with a full 2 year warranty.  The camera features incredible resolution at 600 TVL using a Sony Super HAD II 1/3 inch CCD.  The camera also comes with a built in on screen display that makes the set-up configuration easy.  The camera has a very low Lux rating (it can see in very low light conditions) and has a Wide Dynamic Range feature that automatically takes care of any lighting issues.

 

600 TVL DUAL POWER WIDE DYNAMIC RANGE

This camera is basically the same as the previous camera with the major difference being how it handles power.  While the previous camera uses only 12 VDC, this camera can use either 12 VDC or 24 VAC.

 

540 TVL High-Speed License Plate Capture Camera

Product# VSSC-54CDNR-90

As the name implies, this box security camera is a high speed license plate capture camera, capable of capturing license plates on vehicles moving up to 90 mph.  It is also infrared (IR) sensitive so when combined with an IR illuminator it can also function at night.

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Weatherproof Bullet Security Camera

Written By:
Monday, May 2nd, 2011

There are very few bullet cameras these days that can’t be called weatherproof bullet security cameras.  In fact, all of the bullet cameras that we offer for sale at Security Camera King are weatherproof.  That is one of the benefits of owning a bullet security camera.

A weatherproof bullet security camera bridges the gap between the typical box camera and the conventional dome camera.  Box cameras are great cameras and have been around for a long time.  However, to maintain the box camera’s versatility it doesn’t come with all the necessary parts.

That is, for example, a box camera is usually sold as the body of the camera with the lens sold separately.  This is done to increase versatility, as you can always change lenses if you change the location or want a different field of view for the weatherproof bullet security camera.  However, this added versatility doesn’t come without added cost.

In addition, most box cameras were designed to be used indoors, under protective cover from the weather and the elements.  If you want to use a box camera outdoors, you will need to purchase an additional accessory, an outdoor camera housing.  While neither the lens nor the housing are terribly expensive, they are nonetheless, an expense that you need to consider when comparing cameras.

The dome camera is also an excellent camera.  Originally designed primarily for indoor use, the dome camera has come a long way in a relatively short period of time, technologically speaking.  Like the other models, dome cameras have their own advantages and disadvantages as well.  One such disadvantage is that due to their small size, dome cameras cannot support as many InfraRed Light Emitting Diodes (IR LEDs).  This ultimately means their range in conditions with little or no light will not be very long.

The weatherproof bullet security camera bridges the gap between the box and dome cameras because it features some of the items that are considered the very disadvantage of the other types of cameras.  For example, most bullet cameras come with a factory inserted lens.  Usually these are of the fixed type but there are many weatherproof bullet security cameras that come with varifocal lenses and motorized irises as well (See Security Camera King’s Product# OB-LX550IR150L922).

When shopping for a weatherproof bullet security camera, you probably will at some point, begin comparing each camera’s specification sheet. One term that we would like to clarify is the IP code or IP rating.  You’ll see this rating in the specifications as something like “IP65.”

IP stands for ingress protection and is a standard written and maintained by the International Electrotechnical Commission or IEC.  Its purpose is to provide specific descriptions of a camera enclosure’s ability to protect the camera inside.  An Ingress Protection rating has two digits (like the example in the previous paragraph).  The first digit represents the degree of protection from solids while the second digit indicates the degree of protection from liquids.

The first digit of the IP rating can range from 0 to 6.  A rating of 0 means there is absolutely no protection against contact and ingress or objects.  As this digit increases in value up to 6, each rating indicates protection from progressively smaller objects.  A rating of 6 for the first digit means there is absolutely no ingress of dust and there is complete protection against contact.

The second digit of the IP rating can range from 0 to 8.  Again, a rating of 0 means there is absolutely no protection against liquids.  As this digit increases in value up to 8, each rating indicates protection from progressively more intense contact with water.  A rating of 8 for the second digit means the camera is protected from continuous immersion in water deeper than 1 meter.  There for a reasonably good IP rating for a security camera would be IP55 or IP65.

Last but not least is the IR range.  Not all, but a good majority of the weatherproof bullet security cameras are also capable of IR video imagery.  This is accomplished by using IR LEDs to “light up” the field of vision.  This IR “light” is invisible to the human eye.

Generally, the more LED’s the greater the range and area of coverage under IR conditions.  Weatherproof bullet security cameras have lots of room for IR LEDs and can obtain fairly long ranges.  Before you buy the camera, make sure you check the range you will require so as to by the appropriate camera.

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Evaluations Of Camera Security Systems

Written By:
Tuesday, January 4th, 2011

In this article we will talk about evaluations of camera security systems and what you need to do and know to perform your own evaluations of camera security systems.

Evaluation of camera security systems can be difficult to do comparatively because of subtle differences in manufacturers’ digital video systems; so when trying to determine what system type or component to purchase, consider performing your own needs assessment first. Then search for the equipment that satisfies those requirements. Finally, you can compare different manufacturers’ or vendors’ brand offerings and prices.

Let’s cover the basics of performing a needs assessment based on the technological capabilities of digital video camera security systems. In order to make things a little easier to compare, we’ll break up the system into its three component parts and consider each component separately.

A typical digital video camera security system consists of one or more digital video cameras, the Digital Video Recorder or DVR, and a monitor. We will confine our evaluations of camera security systems here to standalone systems only.

First, determine what you need to protect or monitor. A room, a building, land, property located outside or inside, a parking lot, people, shoppers, cash register or teller areas, etc. Once you know exactly what you need to record, you can move on to deciding how you will record it. This is where the expertise of a professional installer is particularly helpful. An experienced installer can assess your situation and determine the precise placement and minimum number of cameras needed to do the job.

Once you know how many cameras are required, you can begin to narrow your evaluations of camera security systems. Generally speaking, the maximum number of cameras in a system determines the type of DVR that you will need. Customary DVR camera configurations include four, eight, and sixteen potential cameras (Note: The number of cameras is also referred to as “channels” which is not to be confused with another use of the word “channels” that describes specific radio frequencies). If a system requires more than sixteen cameras additional DVRs are used to satisfy the need.

So let’s assume our system will require seven cameras. We now know we will need an 8 channel DVR, but we aren’t ready to select the DVR just yet. Now let’s go back to the cameras. Of our seven cameras we know that four will be used outside and three will be used inside.

Now you must ask yourself what kind of digital video monitoring do you need? Do you require full time (24/7) day and night, do you track or follow objects (cars and people for example), and is audio required, and so on. Once you know the exact requirements of the camera you can determine exactly what type of camera you will need.

Let’s assume we need four outdoor, wireless, night vision infrared digital color cameras with a motion detector. These cameras will also be battery operated. In addition, we’ll need three indoor cameras without any special functions. However, we do need to determine how we will mount these cameras so we know what type of camera we will need for each of the seven cameras (dome, bullet, or box type cameras).

In performing your evaluation of camera security systems for this set-up you will also need to purchase a four channel receiver unit (a receiver unit that can accept four camera inputs and receive each on a separate frequency). This unit will be attached to the DVR. Speaking of which, we can now return to the DVR to consider what to purchase.

We know we need an 8 channel DVR. Do you want to be able to record for long periods of time without erasing over pre-recorded monitoring? If so, you should consider a DVR with a large capacity hard drive. Do you want to make copies of files on DVDs/CDs or other media? Do you need the DVR to connect to the internet? These questions will help determine the type of DVR you require.

Finally, ask yourself what type of monitor you will need. Will the monitor be used for setting up the system and occasional use or will the monitor be watched the majority of the time? (Monitors used for setup can be very small; monitors that will be used frequently should be large enough to view all seven cameras clearly).

After considering what we need, we can now perform evaluations of camera security systems to determine the best prices and products for our application.

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