Posts Tagged ‘ wireless technology’



Construction Site Security Camera Surveillance

Written By:
Friday, December 17th, 2010

If you are looking to increase security in your work zone, consider using construction site security camera surveillance. Digital video security camera systems can help prevent theft of construction site materials, notify you and help prevent intrusion by trespassers, and even monitor the site for safety issues during the work period. In addition, construction site security camera surveillance is an excellent means for providing owners/investors with the ability to follow progress as the construction project proceeds.

Before the technological advances in the digital security system industry, it may have been difficult and costly to obtain construction site security camera surveillance. However, with the advent of new technology including digital video cameras, wireless technology, and Internet Protocol (IP) ready systems, construction site security camera surveillance is reasonably priced and easy to provide, and easy to install.

For particularly large construction jobs, the use of construction site security camera surveillance can reduce or eliminate the need for security guards or a security team. In addition, large jobs can have several cameras or if necessary, multiple systems to provide complete perimeter and site surveillance; indoors our out.

There are so many different types of cameras and systems available that their application is incredibly versatile to the point that there are very few construction site applications where construction site security camera surveillance can’t be used. Let’s take a look at some of these security camera system features and how they can apply to a construction site.

Generally, the number of cameras (also called “channels”) available in a given system is determined by the DVR. The most common DVR types can accept up to four, eight, or sixteen camera inputs. One of these DVRs should accommodate your needs, however if you require more than sixteen cameras, two or more systems can be setup in tandem.

Digital video security cameras require a power supply and a video transmission cable (usually an RG-59 coaxial cable) that must be run from each camera to the DVR. If these cabling hookups aren’t practical for your situation, wireless battery operated cameras can be used instead. Wireless cameras contain their own built-in transmitter and on board antenna that is used to send the video signal via radio waves to a corresponding receiver.

Wireless cameras make use of a variety of different wireless technologies but probably the most common type used today is the 2.8 or 5.8 GHz technology. This is the same technology used to transmit wireless land-line based telephone conversations. It’s incredibly effective and free of interference and can have a relatively long range. Some wireless cameras boast up to a two mile range to the receiver.

These ranges are called “Line of Sight” or LOS ranges because the range specification given by the manufacturer is based on a transmission route between the camera and receiver in a line of sight, meaning without any obstructions between the two. Although objects within the LOS generally reduce the effective range, they seldom prevent reception. If there is an obstruction, the material of the object will determine the reduction in range. Be certain to check the range of wireless cameras before purchasing them to make sure they meet your specific range requirements.

In addition to the wireless transmission feature, some cameras can be operated by batteries (either rechargeable or disposable) instead of a power supply plugged into 120 volt AC service. Even better, cameras can also be purchased with an on-board motion detector.

Construction site security camera surveillance is generally concerned more with activity than non-active video so the motion-detector wireless battery operated camera is an excellent choice. The motion detector is a PIR (Passive InfraRed) sensor that can detect the change in infrared signatures in the camera’s field of view. If a change is detected, it is assumed that this was created by some sort of motion and the PIR connected internally to a relay in the camera housing, turns the camera on to record. The PIR sensor uses significantly less battery power than the camera, increasing the usable life of the batteries.

There are many other options available for construction site security camera surveillance. Night time infrared cameras can record activity using an infrared light source which is invisible to the human eye. Pan-Tilt-Zoom (PTZ) DVR programs with PTZ cameras can actually track or follow an object or person.

Construction site security camera surveillance is a cost-efficient time proven method for preventing and documenting theft, vandalism, and even accidents. This is one tool your construction site shouldn’t be without.

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Security Cameras for the Home

Written By:
Monday, September 27th, 2010

There are several types of security cameras for in home use. In fact, just about any security camera can be used for residential purposes although there are cameras that are more suited for in home use than others. Security camera technology has advanced so much recently that the versatility of security cameras for in home use is almost limitless.

Every home is different; the number of rooms in the home, the perimeter area that surrounds the home and the size of the home’s yard, the entrances and exits, number of windows, especially those on the ground floor – all vary from house to house. As every home’s design is different, so are the uses and needs for the security cameras for that home.

The most effective method to determine what security cameras for in home use are best for you is to evaluate your home design and your security desires and needs. After determining what you need to provide and the level of security and monitoring you desire, you can more easily begin the process of shopping for specific cameras that will satisfy those requirements.

Still, as stated earlier, there are security cameras for in home use that are more suited for this application than others. For an obvious example, an explosion proof camera or housing would be a ridiculous and unnecessary expense for in home use. However Security Camera King offers several different indoor security cameras that are perfect for in home use.

One way to narrow down your camera choice is to determine if you will be able to run the video transmission cable from each camera to the processor/DVR or Digital Video Recorder or if you would prefer a wireless camera instead. Cabling is the least expensive and the most common option for connecting the digital video camera to the DVR.

However, if installing the RG59 coaxial cable would be troubling for you, or if the cable would seem unsightly, or for any other reason the cable would not be right for you, wireless cameras would be the appropriate selection. Wireless cameras still require electrical power supply, normally in the form of a small wire run to the camera from a plug-in transformer or power distribution box. There are some wireless cameras that use rechargeable batteries as well.

Wireless cameras make use of radio technology to broadcast their video data to a corresponding receiver which then transfers the signal to the DVR. So a receiver is also needed if you choose the wireless camera option. Most receivers can handle up to four cameras at one time so if your system requires more than four cameras additional receivers (or a receiver that can handle more than four cameras) will be needed.

Regardless of whether you use cable or wireless technology, there are several different security cameras for in home use based on appearance, mounting design, and function. There are basically three types of cameras based on appearance. They are the box, bullet, and dome types, with each name representing a description of the appearance of the camera.

Each type has its own benefits and deficits. The box camera is probably the most common style of video camera but can also be somewhat obtrusive mounted on a room wall. The bullet type is also popular, but this type of camera usually lends itself to weatherproofing and infrared technology geared toward the outdoors. So if the box and bullet types are not appropriate for your application, then the dome type camera would probably be the best choice.

Dome cameras are fairly low-profile cameras with many available as a flush mount. Flush mounted dome cameras are installed in the wall or ceiling with only the “bubble” cover extending away from the surface. Security Camera King offers several different types of indoor dome cameras based on use and resolution display. That includes total darkness capable night vision infrared dome cameras as well.

Another category of security cameras for in home use include the hidden or disguised camera types. The cameras are embedded inside clocks, thermostats, and other everyday items to disguise their appearance.

To determine what camera is best for you, talk to one of our security experts today.

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