Posts Tagged ‘ Motion Detector’



Security Lights with Camera

Written By:
Tuesday, January 11th, 2011

Talk about “getting caught in the act,” that’s exactly what security lights with camera will do. Using a security lights with camera device will not only illuminate the subject with a flood of high wattage bright white light, but it will take still pictures or video images of them too.

It’s a proven fact that the incidence of crime is decreased in areas that are well lit by bright security lights. Obviously, criminals and trespassers are less likely to frequent areas that are strongly lit because of a higher probability of being caught and ultimately being prosecuted. In addition, both the London, England and New York City police departments have also proven that the mere presence of video cameras reduces the incidence of crime. So why not combine these two into one with a security lights with camera system that offers the power and protection of both?

Generally, a security lights with camera system is a self contained unit. However, using motion detectors, digital video camera illuminators, and digital video cameras, it is conceivable that a custom made security lights with camera system can also be constructed. However, for this article we will limit our discussion to the more common self-contained units.

The self contained security lights with camera system is usually one unit that consists of three major components: 1) A high wattage extra bright floodlight; 2) A motion detector relay; and, 3) A digital video camera and mini Digital Video Recorder or DVR. The unit can be mounted just about anywhere that a regular house current AC power line can be connected to it. The specific locations for mounting the unit are virtually endless. Here’s a partial list of suggested uses or places to mount the unit:
• Front and back of residences near possible points of entry;
• Boat slips and docks;
• Entrances to storage facilities;
• Inside storage facilities that are normally not lit at night;
• Back entrances to stores and other business locations;
• Entrances to barns and/or equipment sheds;
• Property that is posted with “No Trespassing” signs; and
• Machinery and other valuables kept outside.

A typical security lights with camera unit will contain a high-wattage motion activated halogen lamp. Most units use halogen elements rate at about 500 watts. Mounted somewhere on the unit (usually directly below the lamp) is a built-in digital video security camera. Both the lamp and the camera are activated by an on-board motion detector so that when motion is detected, a relay activates the camera and turns on the security light at the same time.

The motion detector used in these units is usually a PIR or Passive InfraRed motion detector. The PIR works by scanning the field of view of the camera and security light. It detects the inherent infrared radiation being emitted in this field of view. When a sudden change in the infrared radiation signature occurs, it interprets this to be an object in motion (such as a human walking past it). The PIR sensor is connected to a relay that is then switched to the “On” position activating both the security light and digital video camera at the same time.

The camera immediately begins taking pictures or digital video footage. Since digital video is actually several digital photographs taken at a high rate of speed in succession, the security lights with camera unit allows you to set it in advance to take either digital still photographs or digital video. The digital photographs or video are saved by the on-board DVR.

The mini on-board DVR usually consists of some sort of built in memory that can be expanded by adding additional memory devices to it (such as a thumb drive, an SD card, etc.) To access the digital photographs or videos, simply remove the portable digital memory media and plug it into your computer.

The entire one piece unit is normally rated as an outdoor device meaning that it can protect the components from weather and other elements (like dust). Installation usually consists of:
1) Mounting the unit and adjusting the aim;
2) Connecting it to a typical residential type AC power line;
3) Inserting the portable memory media; and,
4) Setting the camera and light for duration of the “On” state and the type of digital picture format.

That’s all there is to it. So if you are looking for maximum security at a safe distance with relatively low price, you should consider purchasing a security lights with camera system today.

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Motion Activated Wireless Security Camera

Written By:
Monday, October 18th, 2010

Here are some common questions we’ve had about motion activated wireless security cameras:
• How do these cameras detect motion?
• How does the wireless function work and why would I need it?
• What provides the power for this camera?
• Can I install this camera myself?
• Does this camera produce color or black and white video?
• How do I record the video from a motion activated wireless security camera?

In the following article we will answer these questions and provide you with some general background knowledge concerning a motion activated wireless security camera.

A motion activated wireless security camera is a digital video camera that contains a built in motion detector. When the motion detector senses motion, it turns the video camera on so that it may begin recording digital video images. This means that the camera is only recording video images when the motion detector senses movement.

The motion sensor itself is an infrared sensor. In fact, the name of the sensor is a Passive InfraRed or PIR detector. It works by constantly monitoring the infrared radiation (IR) in the cameras general field of view. When a sudden change in this radiation occurs, the sensor can detect it, and assumes it is caused by an object in motion. The PIR motion sensor is connected to a relay switch so that when motion is connected, the relay switch turns on the camera to being recording. The recording session ends when either the motion has stopped or after a pre-programmed period of time after the motion has stopped.

Digital video images are basically the same thing as digital photographs however they are taken very rapidly in succession. High quality fluid motion is created by taking up to 30 photographs (in video talk these are called “Frames”) per second or 30 FPS. Digital video then is basically many (on the average depending upon the total length of recording time) several thousand to hundred thousand photographs. Imagine the size of a data file for one high quality digital photograph. Now multiply that times 300,000 for example, and that’s how large the digital video file could be.

A digital video camera running constantly at 30 FPS, that creates 1 Megabyte(MB) of data for every frame, creates 30 MB per second or 1.8 Gigabytes (GB) per minute or 108 GB per hour. Using one camera constantly with a 500 GB Digital video Recorder or DVR, would use up all the disk storage space in less than 5 hours recording time.

A motion activated wireless security camera however, only records video when motion is detected. When used properly, this greatly reduces the size of the digital files and conserves DVR storage space.

A second benefit of using a motion activated wireless security camera is power conservation. A motion activated wireless security camera may not be totally wireless. Although these cameras use radio signals to send their video data to a receiver of DVR, they still must be supplied with low voltage Direct Current (DC) power. This is usually accomplished by using a power distribution center and running a small wire from it to each camera or by using a plug-in outlet transformer and running a wire from it to the camera(s).

However, there is a third option for providing electrical power to the camera as well. Some cameras can utilize rechargeable batteries. These cameras use very little power for the constant “on” state of the PIR sensor. The greatest power drain on the system is when the camera is actively recording. Therefore a motion activated wireless security camera can also greatly conserve on power consumption and therefore extend rechargeable battery usage periods, another great benefit of this type of camera.

The camera is easy to install and operate so any “do-it-your-selfer” can install and operate the camera. Once the camera is mounted, and the system is set up, the camera will automatically begin functioning, sending digital video data to the DVR so that the video data can be stored on the hard disk drive.

A motion activated wireless security camera has many other features and options that make it a powerfully versatile security tool. In addition, the camera can record in black and white or high quality color.

This should provide you with some basic knowledge about a motion activated wireless security camera. If you have any addition questions or would like to purchase a camera or system, please contact one of Security Camera Kings security experts today.

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Wireless 16 Camera Motion Detector Security Systems

Written By:
Monday, July 19th, 2010

Wireless 16 camera motion detector security systems are the ultimate solution for digital video camera surveillance and security. The wireless cameras not only provide quick and easy installation, but can be installed just about anywhere. In addition, the motion detection feature provides for conservative storage needs on Digital Video Recorders (DVRs) and if used with the Tilt-Pan-Zoom (PTZ) function can be used to track objects or individuals throughout a camera’s useful field of view.

Typical wireless 16 camera motion detector security systems consist of 16 wireless cameras with motion detection, up to 4 wireless receiver units, one 16 channel standalone DVR unit, and monitor(s). However, there are several variations on this system based on the type of components used and the type of motion detection desired.

Let’s talk about the cameras of wireless 16 camera motion detector systems. The wireless cameras used in these security systems are digital video cameras. These cameras create video images by using one of two special sensor chips. A Charged Coupled Device or CCD or Complementary Metal Oxide Semiconductor (CMOS) sensor chip converts light energy into electrical energy that can be measured and used to produce high quality color (or black and white) video images.

These cameras transmit their video signals using built-in transmitters and antennas to receiver units. Most receiver units can handle up to 4 separate cameras at one time; that is why there may be up to 4 receivers used for a 16 camera system. The signals are normally transmitted over the 2.4 or 5.8 GHz band although there are still some models that may use the 900 MHz band. This wireless technology is basically the same that is used for wireless home telephones.

Wireless 16 camera motion detector security systems may use cameras with different ranges. The range of a wireless camera is based on Line Of Sight or LOS which means the maximum specified range is based on an unobstructed distance between the camera and the receiver. Cameras can still transmit with objects in the LOS but the maximum range will usually be reduced based on the type of material that makes up the object.

Wireless cameras may be indoor or outdoor types. Outdoor cameras are just like indoor models except they are enclosed in a protective case or cover. This cover or case protects the camera from weather and other natural elements from penetrating the case and thereby affecting the camera. These cameras are often rated according to an International Electrical code standard known as the Ingress Protection Rating. Cameras that protect completely from dust and various levels of water penetration are best so look for cameras with IP66 or IP67 ratings.

The cameras used in wireless 16 camera motion detector security systems may also be day/night vision cameras or night vision infrared cameras. Day/night cameras have very sensitive sensor chips that produce high quality color video with very little available visible light. Night vision infrared cameras produce high quality color video in conditions with visible light and high quality black and white video in total darkness by using infrared illumination.

Other options for these cameras include audio recording, pan-tilt-zoom, and hidden or disguised cameras.

Wireless 16 camera motion detector security systems may actually implement the motion detection function by one of two ways. The first method is by a motion detector sensor that is mounted directly on the camera or is a part of the camera case or mount. These cameras use something known as a Passive InfraRed or PIR sensor. The sensor works by detecting the changes in infrared radiation light in its field of view. Once a change is detected, an assumption is made that motion has caused this sudden change, and the PIR triggers a switch that turns on the camera or initiates recording video for a camera that is already on.

The second method of motion detection lies within the programming of the processor/DVR unit. These units can contain programming in the form of software or as hard wired programming that can detect movement in the camera’s field of view. This type of motion detection can be incredibly useful when used with PTZ functions because the camera can be programmed to literally track the movement of an object or an individual. These cameras are often used in parking lots and retail stores.

Wireless 16 camera motion detector security systems are the ultimate security system because of versatility, ease of installation, and affordable price. Check with our digital security experts to get your system today.

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