User Walks across the space along the wall and the imagery on the wall sensing the motion. The term ‘motion sensors’ refer to devices that are designed to sense or detect the presence of an individual in a specific space. Motion sensors are available in many types and looks and each work differently using different technologies. Many integrators sometimes confused or do not understand the difference between technologies applied in motion sensors and the effectiveness of each sensors. However, expert integrators like ArtLumen are capable to optimize an intrusion detection system design by combining various technologies.
The use of a typical motion detector technology depends on the environment where they are being installed. Crucial details such as ambient temperature, proximity, obstacle count, detection angles, and others are what an expert integrator uses to determine where to deploy each type of motion detector.
The shapes and sizes of motion detectors vary. In custom designs, motion detectors are designed into the buildings or other constructions in such a way that the existence of them have been concealed. The common motion detector technologies used currently are infrared, microwave, and laser. There are other motion detector technologies like ultrasonic, Doppler, and seismic are also available in the market, however, their use- frequently is very low.
One important aspect as far thing motion detectors are concerned is that all motion sensors are not equal and that each has certain effectiveness in specific areas. For instance, infrared motion detectors sense heat changes in the monitored space. These detectors alarm when a drastic heat source enters a comparatively cool area, such as a 98.6 degree body entering a 70 degree room. If one of these motion detectors is installed in an attic or somewhere that gets very hot, then a human body entering that space will not cause the needed heat differential to initiate an alarm.
Active infrared detectors emit a constant electrical signal that uses infrared light (heat) beams that connect to a light detector. If the infrared beams are interrupted, your detector sounds the alarm.
A passive infrared sensor passively waits for an infrared event. When a heat source, like the human body, passes by, the sensor detects the moving presence and sounds the alarm. These are the most common sensors in home security.
Active ultrasonic sensors use high-frequency sound waves (you can’t hear them) that work like a boomerang: These waves are sent out and then return to the sensor, reporting any suspicious interruptions in the sound waves (in other words, a human body obstructing the ultrasonic path.
Instead of actively sending out sound waves, these detectors wait passively for a sound event, like shattering windows. The sound waves emitted by such an occurrence are what triggers a passive ultrasonic detector.