Motion Sensor Home Security Cameras

By: Timothy Croy

Many security cameras do not record well in the dark. This implies that a slinky presence can get away with any deed as long as the dark provides a shield. This is where a security camera with motion sensor comes in. The motion sensor triggers an automatic response as soon as it picks up a movement in its vicinity. Some of these cameras come equipped with floodlights that power up as soon as a motion is registered, flooding the area with light and catching the culprit in the act. This is further enhanced by the fact that a security camera with motion sensor often offers a connection to a TV or computer monitor. As soon as the sensor is triggered, images of the perimeter can be captured immediately.

A security camera with motion sensor is most of the time used to detect human presence.

As such, it has been configured to capture any human movement around it. For this purpose, the sensor uses an infrared- commonly called IR- illuminator. A security camera with motion sensor uses PIR - passive infrared- detectors. Humans with a body temperature of ninety-three degrees Fahrenheit emit infrared energy, its wavelength between nine and ten micrometers. PIR sensors are calibrated to pick up any wavelength between eight and twelve micrometers. The sensor is designed to pick up on rapid changes in IR energy, as when a person is moving. The sensor device itself is a basic one that works under the principle of a photosensor, which picks up on changes in the amount of light in an area when an emitted light beam is crossed.

Setup for a security camera with motion sensor is usually fairly easy. When connected to a surveillance system, it integrates well with other components to provide increased security. The feeds from the camera can be viewed on any monitor, a TV, or a computer screen. The images can also be recorded through a VCR or DVR for later viewing. Weatherproof, this type of camera can be used both indoor and outdoor, in a temperature range of fourteen to one hundred and twenty two degrees Fahrenheit. It also features a built-in microphone and wide angle lens.

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