Motion sensors are special lighting devices that detect moving objects, not people in particular. They are products of energy-saving technology. Thanks to them, the lighting is turned on only where and when it is needed, shines as much as necessary, and often the minimum required level of illumination is maintained. They are “intelligent” because once installed and set by a human hand, the sensors automatically turn on and off the lighting, distinguish between the dark and light part of the day. All this creates the necessary comfort for people with minimal electricity costs.
The simplest and therefore the cheapest and most common type of sensors are those with Fresnel lenses. Their shape is part of a cylinder with vertical segments visible to the naked eye. The typical angle of coverage for sensors with such a lens is about 130–140° if one pyrodetector is used. To increase the angle, sensors with two or three pyrodetectors are used. To minimize the space under the sensor, which remains invisible to it, there is a second, additional window in the lower part of the lens that “observes” this particular sector. This makes it practically impossible for someone to sneak under the sensor unnoticed. It is important to know that glass is an obstacle in the path of infrared rays and reduces the volume of the controlled area.
An important parameter in the operation of the sensors is the time interval in which they will work. The values range from 5 seconds to 10 minutes. The optimal interval is selected depending on the workload of the monitoring area. The recommended operating time is 1-2 minutes, so that there is no constant switching on and off of the device.
When installing a sensor indoors, the dimensions of the room, as well as the location of windows and doors, must be taken into account, because this affects the proper functioning of the device.
WHERE ARE SENSORS USED AND WHAT ARE THE BENEFITS OF USING THEM?
Sensors can be used indoors and outdoors. They are mounted on a wall or ceiling. Ceiling mounting provides a circular view of the sensors.
Those that are for outdoor use, i.e. around a building, garage or simply in the garden, work on the principle of infrared radiation. For use inside buildings, in addition to sensors of this type, high-frequency sensors are also used, which have a number of advantages in closed spaces, but are correspondingly more expensive.
In outdoor sensors, passive infrared pyrodetectors are used, which are sensitive and respond to the infrared radiation of the human body, as well as warm-blooded animals. Their sensitivity has now been improved to such an extent that they can detect the passage of even a cat, which, of course, does not need artificial light. In such and a number of other cases, it is necessary to limit the range of the sensor, as well as its sensitivity. In order for the movement of the warm-blooded body to be captured by the pyrodetector, its “field of view” is divided by a special lens into multiple consecutive segments of active and passive zones. The passage of the heat-emitting moving body from zone to zone causes a change in the captured infrared radiation, and the pyrodetector responds to the movement by producing electrical pulses.
Sensors ensure efficient use of resources because they save electricity. They protect against unnecessary electricity consumption because they are activated "smartly" and eliminate the risk of forgetting the lighting fixture is on.
Their main purpose is to exercise continuous control in the surveillance area and to facilitate human activity in the dark. In addition to convenience, they also help to increase security and safety in the perimeter they cover.
The sensors are compact devices and their installation is quick and easy, without causing any damage to the interior. Therefore, today they are widely used both in private homes and in residential complexes, apartment buildings, hotels, office and administrative buildings, educational institutions, sports halls, parking lots, and commercial enterprises.
In addition to their wide-ranging practical benefits, their widespread use has also been facilitated by their decreasing cost with technological advances.
EMERGENCY LIGHTING
The demand for emergency and evacuation lighting has increased after it became mandatory in all existing public buildings. In them, increasing attention is paid to the safety of the occupants, especially when it comes to office, administrative, commercial or industrial facilities, which usually accommodate many people. Safety is considered at all levels and stages of the design, and it is considered from all possible aspects - seismic, fire, lightning protection, safety in the event of accidents and natural disasters.
Emergency and evacuation lighting systems allow, in the event of a problem with the central power supply, to provide sufficient light from an independent source for the normal completion of processes and, if necessary, safe exit from the building.
Emergency and evacuation lighting systems are designed to ensure personal safety and ensure safe evacuation from a building in the event of a breakdown or accident. Such a system must work flawlessly in all situations, which is why high requirements are placed on its reliability. The system is an element of mandatory safety measures, which requires it to be professionally and precisely planned and developed.
Fluorescent and halogen lamps have traditionally been the preferred light source for emergency and evacuation lighting. However, constantly changing requirements require the search for maximum energy efficiency with minimal impact on the environment, and light-emitting diode (LED) light sources are gradually finding their place in emergency and evacuation lighting systems.
Emergency lighting is usually built on a combination of signposts and main luminaires equipped with an emergency lighting function. The system can be either centralized or decentralized, i.e. with a central power supply or with an integrated emergency lighting solution in the luminaires themselves.
A wide range of products is available on the market that meet the requirements of regulatory documents. With modern light sources, which offer very good illumination in the most compact dimensions, the requirements are significantly higher than they were for older sources. For this reason, leading manufacturers are oriented towards using specialized components for emergency lighting with very high efficiency.
WHAT DO WE OFFER?
With us you can find motion sensors of both types - for outdoor and indoor installation. There are models for both wall and ceiling. Their scope is different, their designs are also different. We also have models of infrared motion sensors, but a product from the STEINEL company, which is among the most renowned in this industry, deserves special attention. This is an intelligent sensor that can also be used as an energy-saving light bulb.
If you are looking for emergency lighting, with us you will find products that comply with the standards of the Bulgarian Civil Code and meet all the safety requirements set in the production of evacuation luminaires. Our catalog includes EXIT emergency luminaires with different images: only with an inscription or with the symbol of a running person and an arrow; evacuation LED luminaire with the symbol of a running person and an arrow to the side; EXIT emergency luminaires with LED lamps. The latter allow continuous lighting for up to 5 hours after a power outage, and the others - up to 2 hours.
More about the models – in their personal technical descriptions.
