How to set up and use the infrared alarm correctly

With the improvement of the standard of living of household users, more and more consumers have begun to pay attention to home security, and the use of infrared alarm equipment is very large. When a stranger breaks into the monitoring area, the equipment can inform the "owner" at the first time.
Infrared alarm is a kind of detector commonly used in security engineering. However, for its normal use, it must not only prevent underreporting, but also reduce false positives, mainly to minimize false positives. To achieve this, we must first understand some basic concepts and technical characteristics of passive infrared alarms, so that they can be used according to these basic technical characteristics, from installation, commissioning, use and other links, according to the basic technical characteristics of alarms. In this way, the maximum effect of the alarm can be maximized.
So first we have to understand the following information, the proper use of infrared detectors will be a great help.
1, according to the specification to determine the installation height
The installation height of the alarm is not arbitrary, and it will directly affect the sensitivity of the alarm and the effect of small animals. The general wall mounted infrared alarm installation height is 2.0-2 .2 meters.
2, not to face glass doors and Windows
There are two problems with glass doors and Windows: First, white light interference. Although the passive infrared alarm(PIR) has a strong inhibition function for white light, it is not 100 % inhibition after all. Do not be on glass doors and Windows to avoid strong light. Interference; The second is to avoid complex environmental disturbances outside the door window, such as direct sunlight, crowds, and mobile vehicles.
3, should not be positive heat vent or cold heat source
Passive infrared alarm induction is closely related to the change of temperature. Cold and hot vents and cold and heat sources may cause false alarm of the detector. For some low-performance alarms, sometimes air convection through doors and Windows can also cause false alarm.
4, not the right pair of easy to swing large objects
Large objects with large swings can cause sudden air flow changes in the detection area instantaneously, which may also cause false alarm; For example, the outdoor alarm should avoid tall trees and tall shrubs.
5, reasonable position
No screens, furniture, large bonsai or other isolates shall be found within the scope of detection as far as possible; It is best not to install two wireless infrared detectors in the same space to avoid interference due to simultaneous triggering; The infrared detector should have a certain angle to the indoor walking line. The alarm is the least sensitive to the radial movement reaction and the most sensitive to the tangential(ie, perpendicular to the radius) movement. Selecting the suitable installation location in the field is an important part to avoid the false alarm of the infrared detector and obtain the best detection sensitivity.
6, reasonable selection
Passive infrared alarms have a variety of models, from indoor to outdoor, from wired to wireless, from single-infrared to three-infrared, from wall hanging to ceiling, so the alarm to be installed must consider the size of the prevention space. The surrounding environment, the characteristics of the entrance and exit and other actual conditions.
After installing the alarm, debugging the alarm is the last thing to do. The debugging of passive infrared alarms is generally a step test, that is, the debugger takes the S-type line in the alert area to perceive the length and width of the warning range to test whether the entire alarm system meets the requirements. The manual can be consulted to properly adjust the sensitivity of the alarm, too high and too low sensitivity will affect the prevention effect.
Understanding the principle and installation steps of the infrared alarm, we can guarantee its normal use, prevent underreporting and reduce false alarm. The infrared alarm is a very practical home detection device. It can effectively monitor the human temperature and then warn the alarm. Destroy danger in its cradle.