Posts Tagged ‘ infrared security cameras’



Wireless Baby Monitor

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Wednesday, November 9th, 2011

If you are a parent of a newborn baby or an infant you can finally get the peace of mind you deserve at an economical price by using a wireless baby monitor.  These devices are actually highly specialized digital video security and surveillance system components designed specifically for monitoring babies or young children.  They offer the flexibility of operating as a standalone device or being tied-in to a larger whole-house digital video security system.  Most wireless baby monitors also have the versatility to be used just about anywhere inside the home, not just in the nursery or baby’s sleeping area.

A wireless baby monitor that is part of a larger whole-house digital video security system is usually a camera placed in the baby’s room and aimed at such an attitude as to capture the baby while sleeping and/or awake.  The camera may be permanently mounted and connected to the system’s Digital Video Recorder or DVR unit wirelessly by using a wireless receiver which is then connected to the DVR.

Although recording baby monitor footage is not necessary or usually desired, the DVR unit can record the digital data but is normally used to process the camera’s digital video output and make the video available for live viewing on an attached monitor.

Standalone wireless baby monitors are probably more popular than typical system monitors.  By marketing standalone wireless baby monitor units, the user is not required to purchase an entire full-size system, thereby reducing the total cost tremendously.  In addition, the camera contains a built-in wireless transmitter that sends the digital video signal via radio waves to a corresponding wireless receiver built into an LCD monitor.

A wireless standalone baby monitor is one of the more versatile types, as it allows for easy repositioning of the camera from one place to another within a room or from one room to a different one.  In addition, the wireless LCD (Liquid Crystal Display) monitor provides the convenience of portability so that the parent can monitor the baby from the kitchen, living room, parent’s bedroom or anywhere else in and around the house.

Most wireless baby monitors operate from power supplied by batteries, either one-time use or rechargeable, both in the camera and the monitoring devices.  Of course there are models available that can also utilize household power outlets as well.

Another option that comes with many wireless baby monitors is a night vision infrared camera.  The sensors used to convert the light images into electronic video images in digital video cameras are inherently sensitive to infrared light in the near infrared spectrum.  During the day, these cameras produce high quality color video images and at night or in darkness, they produce a high quality black and white or monochromatic video image.

The infrared cameras can produce images in total darkness because the camera illuminates the target area by using infrared Light Emitting Diodes or LEDs.  These LEDs are normally arranged in an array around the lens of the camera or off to the side, so as to direct their infrared light in the same direction as the camera’s field of vision.

The night vision infrared wireless baby monitors with infrared LEDS are quite a blessing to parents and other caretakers because although the camera sensor can “see” the infrared illumination just like visible light, the illumination is invisible to the human eye.  This means the baby can be monitored in total darkness under infrared illumination without ever being disturbed by the light!

Generally, many infrared wireless baby monitors will require a house current outlet for a power supply, because the power demands are higher since the camera also must furnish the electricity for the LEDs.  These cameras are readily available in a variety of different types and styles for whole-house type digital video security systems, but may be a little more difficult to obtain in the standalone battery-operated design.

Finally, since today’s technology allows for camera units to be manufactured in such small sizes, a wireless baby monitor camera can easily be disguised as something else so as not to frighten or disturb the baby or young child.  For example, check out Security Camera King’s “2.4 GHz Wireless Dog Baby Monitor Camera” product number HC-BBMNT-GC under our “Wireless Hidden Cameras” section or by going to http://www.securitycameraking.com/2.4ghz-wireless-dog-baby-58756-prd1.html.  This camera even includes a microphone to record audio.

If you have any questions about a wireless baby monitor or are considering a purchase, contact one of our security experts today via “Live Chat” or toll free telephone at 866-573-8878.

 

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Types of Dome Cameras

Written By:
Sunday, October 16th, 2011

There are so many type of dome cameras that it makes this category of digital video security camera incredibly versatile.  There are basically three types of security camera:  1. The box camera, a very popular and original security camera; 2. Bullet cameras, so called because of their shape; and, 3. Dome cameras, also named after their shape.

Generally, regardless of the type of dome camera, these cameras come with their own mount or the camera plate itself is mounted directly to the wall, ceiling, or other surface.

There are several ways of stating the types of dome cameras.  The types are basically arbitrary but there some common characteristics among cameras that allow us to place them in different categories (types) for the purpose of discussion.

First we can separate them into indoor and outdoor types.  Indoor dome cameras are made in such a way that they cannot withstand some of the rough treatment of constantly being outdoors.   Outdoor dome cameras on the other hand are designed to withstand weather and other natural elements such as dust and often have an IP rating.

An IP Rating or code is based on the International Electrotechnical Commission’s (IEC) international standard 60529.  According to the standard, it “describes a system for classifying the degrees of protection provided by an enclosure.  IEC 60529 is NOT a ‘product standard’ and does not cover enclosure requirements other than the ‘degree of protection’ provided.  An IP rating is usually represented by two digits and may contain an additional optional letter.

An IP rating can be thought of as a more exact classification of the degree of protection offered from the security camera from intrusion by solid and/or liquid matter.  The rating is usually expressed as “IP 65” or “IP 65M.”  Generally speaking, the higher the IP rating the better protection that is afforded to the camera.

This term can be confusing when dealing with security cameras because some digital security cameras can be IP networked cameras, which has nothing to do with an IP rating.  For the benefit of clarity and distinction, an IP networked camera is a camera that can take advantage of Internet Protocol to transmit its video signals over a network or the internet.

This brings us to another type of dome camera, the IP (Internet Protocol) type camera.  These cameras connect, not necessarily to a DVR, but usually directly to the Internet which they use as a network.  Once connected to the Internet, IP dome cameras can be monitored anywhere in the world where there is a broadband Internet connection and this includes 3G and 4G smartphones as well.

In contrast, non-IP cameras normally connect to a Digital Video Recorder or DVR via a transmission cable such as coaxial cable RG59.  These cameras do not have a direct connection to the Internet although the DVRs they are connected to may have one.

Other types of dome cameras include InfraRed (IR) dome cameras.   These cameras normally contain an array of IR Light Emitting Diodes or LEDs that allow the camera to “see” in complete darkness.  The LEDs work like a flood light for the sensor inside the camera however, human eyes cannot detect them; the infrared “light” waves are completely invisible to us.

Continuing with our types of dome cameras, there are also Pan-Tilt-Zoom cameras or PTZ cameras.  These cameras can move left or right, up or down, and zoom in or out.  One PTZ camera can often replace the need for 2 or 3 or more stationary cameras.  These cameras often have a feature called automatic object tracking or object following.  They can detect motion and once detected, zoom in on and follow the object.  A good example of this is a PTZ with object tracking mounted in a parking lot.   It can follow people and/or cars as they enter/exit the parking lot.

Finally, there is one last category that we can use to classify the types of dome cameras.  These cameras are vandal proof dome security cameras.  Since most situations that include vandalism present themselves as such that the camera needs to be mounted very close to where the vandalism occurs, they are subject to abuse.  These cameras usually have tough body cases and Lexan windows to help with stand vandal attacks.

Security Camera King has a full line up of different types of dome cameras.  If you need more information you can contact our security experts by on-line “Live Chat” or by telephone at 866-573-8878 Monday through Friday from 9AM to 6PM EST.

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Infrared Wireless Camera

Written By:
Wednesday, June 15th, 2011

You may be wondering what an infrared wireless camera is.  It is a digital video camera that can capture digital video images in total darkness and does not require a coaxial video transmission cable run from the camera to the Digital Video Recorder or DVR.

Let’s start at the beginning.   A digital video security and surveillance system normally has three basic parts or components:  The camera(s); the DVR; and, the monitor(s).  It’s the camera that we are interested in so lets talk about how it works and what it does.

Unlike the infrared wireless cameras, most cameras need some sort of connection wire to send their video data over to the DVR.  Most often, this wire is actually RG-59 coaxial cable.  The signal originates at the camera end and terminates at the DVR end.  There is nothing wrong with this method; in fact this is the way most security systems are set up.  However, if you want to avoid running all that cable, then you may want to consider a wireless camera.

The wireless camera helps to avoid all the time and effort it takes to run the RG-59 cable.  Imagine that you want to install a gate camera at the end of a very long driveway.  Can you imagine the cable run through your house all the way out to that camera at the gate?

On the other hand an infrared wireless camera has its own on-board transmitter and built-in antenna so that it can send the video data to the DVR in radio frequency format instead of cable.  Actually the camera sends the radio transmission to a corresponding receiver made specifically for this purpose.  The receiver is then connected to the DVR by a coaxial cable and relays the camera’s signal to the DVR via this short cable.

The camera at this point is not truly 100% wireless.  All cameras must have some sort of power supply and so a power supply line must be run to the camera.  In this situation, this can still be a bit of an advantage at making installation easy because a single plug-in type transformer, made specifically for the camera can be plugged in to an outlet nearest the camera reducing the power supplies’ cabling run.

A truly infrared wireless camera can be achieved with very little effort.  This is probably the most desirable configuration because there are absolutely no wires or cables that need to be run from the DVR to the camera.  There are many infrared wireless cameras available from Security Camera King that obtain their power supply from on board batteries.  This makes the camera truly wireless.

When purchasing a wireless camera, make sure you know how far (usually in feet) that your camera will be separated from the receiver.  Most cameras employ a wireless transmission type where the maximum range is stated based on Line Of Sight or LOS.  That means that a camera with a wireless range of 300 feet has that range based on LOS.  If there are any objects between the receiver and the camera you could loose the signal entirely, although this is rare.  Generally, depending on the amount and material the radio signal must go through it simply reduces the camera’s range.

The other half of the infrared wireless camera, that is the infrared portion, allows the camera to see in total darkness.  The camera lens focuses the field of view onto a small (usually 1/4 to 1/3 inch square) sensor that when struck by light energy emits electrical impulses that can be measured and used to create an electronic reproduction, or video footage.

The chips that are used are the Charged Coupled Device (CCD) and the Complementary Metal Oxide Semiconductor (CMOS).  Both the CCD and the CMOS have the inherent ability to react not only to the visible light spectrum but they can also see the near red infrared light spectrum (human eyes cannot see this type of infrared radiation–simply put it is invisible to us).

An infrared wireless camera is usually supplemented with an array of InfraRed Light Emitting Diodes (IR LEDs) positioned around the lens.  This is like using a floodlight on a non-infrared camera.  Additional illuminators can be purchased to extend the distance of the camera.

An infrared wireless camera not only has a transmission range, but it also has an Infrared range distance.  Make sure to check the infrared range on the camera before purchasing it as well.

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Cheapest Quality Infrared Camera

Written By:
Monday, September 27th, 2010

Are you looking for the cheapest quality infrared camera? Look no further than Security Camera King as we stock some of the highest quality yet economically priced infrared security cameras available. Before we look at some specific models Security Camera King has to offer, lets look at some of the features of infrared cameras that may affect their price.

First, let’s briefly discuss how an digital video infrared camera works, then we can better understand the difference in prices based on its features.

To begin with, a digital video camera produces a video image by taking several digital photographs in rapid succession. On the average, a typical high quality camera is capable of producing at least 30 photographs (called frames) per second or 30 fps.

These images are created by electronic sensors that convert light energy into electrical energy that can be measured and used to create a digital photograph or video. There are two basic sensors that are used. One sensor is called a Charge Coupled Device or CCD. It usually produces a higher quality image but may also be more expensive. The other sensor called a Complimentary Metal Oxide Sensor or CMOS has historically been a little lower in quality and cheaper in cost. However, as technology advances the CMOS and CCD are becoming closer in quality and cost. Both sensors produce black and white or monochromatic images in the infrared mode.

These sensors have and added advantage to digital imaging. In addition to being sensitive to light, they are also inherently sensitive to near infrared radiation (light). This means that they have the inherent ability to be used as an infrared camera. However, since the sensor is able to detect near infrared light, the field of view must be illuminated by near infrared radiation. In other words these cameras do not detect the typical heat signatures naturally emitted by objects.

Therefore, infrared cameras use infrared Light Emitting Diodes or IR LEDs to “illuminate” their field of view. These LEDs are usually arranged in an array around the camera lens so that their light is focused in the same direction as the camera’s field of view. However, separate LED security cameras may also be used to illuminate the target area. Generally speaking, the more LED’s the better and longer range of illumination, therefore the longer IR range of the camera.

Finally, there are day/night cameras and true day/night cameras. Lesser quality day/night cameras use software to filter out the infrared light that it sees during the day mode. Higher quality true day/night cameras use an IR Cut filter during the day to filter out the infrared radiation producing a higher quality image.

To summarize then, there are certain features that affect the price of infrared security cameras, namely:
• The type and size of the sensor chip used (CCD vs CMOS)
• The speed of the camera (FPS)
• The number of LEDs used for IR illumination (and therefore the range of the camera)
• Any filters or additional accessories that may be used with the camera.

So what are the cheapest quality infrared cameras that Security Camera King has to offer? The following is a brief list of the four cheapest quality infrared cameras offered by Security Camera King including some brief specifications that you may use for comparison to other cameras.

Cheapest Quality Infrared Cameras offered by Security Camera King
• Product # OD-LX420IR50 – A 420TVL indoor/outdoor vandal resistant dome camera with a 50 foot IR range. It contains a CCD and 23 IR LEDs. The current price is only $49.95.
• Product # OB-LX420IR50 – A 420TVL indoor/outdoor weatherproof bullet camera with a 65 foot IR range. This camera contains a 1/4″ Sharp CCD and 23 IR LEDs. The current price is only $49.99.
• Product # OD- LX520IR50 – This dome camera is essentially the same as OD-LX420IR50 but offers an increased resolution of 520TVL. The current price is only $79.99.
• Product # SVB-58IR48 – This bullet camera is similar to the OB-LX420IR50 listed above but offers an increased resolution of 580TVL. In addition it also offers a longer IR range of 164 feet and uses 48 on-board IR LEDs.

Security Camera King offers some of the cheapest quality infrared cameras available. Remember when shopping for your IR camera to consider camera features such as resolution, IR range, weatherproofing, etc. for comparable pricing.

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What is an Infrared Camera?

Written By:
Tuesday, March 30th, 2010

An infrared security camera is a camera that can “see” infrared radiation. This is done by a sensor, called a charged coupled device or CCD that is sensitive to infrared light. Let’s take a closer look at this whole process to get a better understanding of how infrared security cameras work.

There are many types of electromagnetic radiation such as radio, microwave, infrared, visible, ultraviolet, gamma, and x-ray for example. The wavelength of the radiation is what determines whether it is radio, visible, or x-ray. In fact in the list of types of electromagnetic radiation above, everything before “visible” (radio, microwave, and infrared) has a longer wavelength than visible light; everything following “visible” (ultraviolet, gamma, and x-ray) has a shorter wavelength than visible light. Our eyes “see” because they are sensitive only to radiation that is called visible light. Infrared literally means the radiation that is just below visible red.

Inside an infrared security camera is the CCD, the sensor mentioned earlier. The CCD is sensitive to, and responsible for, capturing visible light and transferring it to a digital signal that we see on our monitors. The CCD is typically inherently sensitive to infrared radiation as well. Normally, digital cameras contain a filter that stops the passage of infrared light to the CCD to prevent interference of infrared light in visible light transmission. An infrared security camera either removes this filter when necessary or doesn’t contain one at all. Therefore, the CCD can capture infrared radiation producing a picture, similar to visible light radiation.

There are several different classifications of infrared radiation. However, security cameras normally work on the basis of two. Normally, the infrared radiation that is used for the majority of security cameras in the 700 to 900 nanometer wavelength range is called near infrared. This is the radiation that the CCD’s are inherently sensitive to and that normally require some sort of infrared lighting. Cameras that capture infrared radiation in the range of about 900 – 14,000 nanometers are called infrared thermographs or infrared video cameras and work using an entirely different type of sensor and principles. These cameras do not require additional infrared lighting, but are much more expensive than the near infrared cameras.

So how does a security camera work as a day/night infrared camera? First the camera contains the sensors and inner components to capture both visible light and infrared light. During the day, or during periods with adequate visible lighting, the camera works producing a color picture from visible light. A light sensor in the camera, tells the camera when there is not enough light. When this happens, usually at light levels below 1 LUX, the camera switches to infrared mode. In infrared mode, the camera may employ a different CCD, or different settings of a CCD, or mechanically add or remove lens filters internally. In infrared mode, the camera produces a black and white image instead of color.

One key aspect to look for when purchasing an infrared security camera is the camera’s range. Near Infrared security cameras normally have an array of infrared light emitting diodes or IR LEDs. These LEDs produce infrared light, light that can’t be seen by humans but can be seen by the camera, to “illuminate” their field of vision. Usually, if the range of the IR camera is short it has very few or no IR LEDs, conversely if the range is long the greater number of LEDs that surround the camera. Therefore, IR cameras with long ranges will generally cost more because of the additional IR LEDs. An infrared security camera with a 50 foot range would be useless if the area to be monitored was a large parking lot.

There is another type of camera that can produce images in very low light conditions. These are not true infrared cameras or do they normally contain illuminating IR LEDs around the camera.

Sometimes security cameras are referred to as day/night, infrared, or night vision cameras and often the terms are used interchangeably. However, most true infrared cameras have IR LEDs surrounding the camera (and these are often called night vision cameras) whereas day/night cameras can but usually do not have the IR LEDs. Day/night cameras normally have an extra sensitive CCD or other sensor that can work in extremely low light conditions. Just remember to check the specifications of the camera you are considering to make sure you are getting what you pay for.

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