Motion species

Motion detectors are widespread today, as they offer a lot of comfort when switching consumers. Yet many people do not know that there are different types of motion detectors. This distinction is important because the different detectors also bring different characteristics.

Motion detectors can be found almost everywhere

Motion detectors are extremely widespread. In many different areas of life we ​​encounter motion detectors:

  • for switching on lights in driveways or in the entrance area
  • as a trigger for alarm systems for object monitoring
  • in the Smart Home, for example, as a baby, child or burglar alarm
  • Access doors of shops
  • Securing vehicles
  • in car washes

The main types of motion detectors

It is clear from this that there are also different conditions of use. According to the use of motion detectors, you can choose different types. The most common types of motion detectors are the following:

  • Motion detector with infrared sensor (PIR detector)
  • High-frequency or radar motion detector (radar or HF detector)
  • Photocell or camera sensor detector

In the same order, the distribution from top to bottom is decreasing; that is, PIR detectors with infrared are the most commonly used motion detectors.

Function infrared motion detector (PIR passive infrared sensor)

The PIR motion detector responds to the heat radiation of living beings or machines (engine in vehicles). It is simply determined the difference of the temperature to the other environment. In order for the infrared beam to be scattered, this motion detector is equipped with a special lens. This is composed of numerous small lenses.

These break the infrared beam so that the motion detector can detect the area defined by the manufacturer. Motion detectors that use infrared require direct contact with the object or creatures to detect the temperature difference. In other words, you can not install PIR detectors hidden behind porches or walls. High quality PIR detectors can be set to not respond to smaller animals such as dogs or cats.

Radar and RF motion detector (high-frequency detector)

The HF detector emits a high-frequency signal, which is why it can also be called an active motion detector. If the high-frequency beam is blasted onto a moving object or a living being and reflected accordingly, the motion detector responds. As a result, the HF motion detector works completely independently of different temperatures, explicitly of significant temperature fluctuations.

RF detectors can also be placed indirectly, so they need not have a "free field" for the radiated RF energy. Therefore, HF detectors can also be mounted behind walls, stems, etc. Also, they are ideal for object surveillance, as they can be mounted well hidden. HF motion detectors are also very popular in smart home technology and can be used in a variety of ways.

Photocells Motion

These motion detectors are rarely used in private environments. If such detectors are to be installed, then mostly because of professional object monitoring, on machines, washing or manufacturing lines. The photocell sends a permanent picture of the environment to which the sensor is directed.

Using an application (app) or software can then set different parameters, such as whether the sensor should react to visual changes. But it can be a very simple photocell integrated, which can not be digitally supported or must.

Tips & Tricks

The house journal not only tells you how technical components work. Of course, you will also get advice and instructions for use or assembly. Here you will find detailed instructions for connecting the motion detector.

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