What is infrared detector?
The infrared detector is called the “Photoelectric Beam Detector†(Photoelectric Beam Detector), and its basic structure includes aiming holes, beam intensity indicators, spherical lenses, LED indicators, etc. Its detection principle is to use Infrared light is transmitted through the LED infrared light emitting diode, and then the optical mirror is used to focus the light to a long distance and is received by the light receiver.When the light is interrupted, it will give an alarm.Infrared light is invisible and will spread , cast out to form a cone beam.
Infrared light emits 1000 beams without a second, so it is a pulsed infrared beam. As a result, these shots cannot be transmitted over a long distance (within 600 meters).
Infrared detector alarm mode?
Probes that use light-blocking methods, when someone crosses a surveillance zone, interrupt an invisible infrared beam and cause an alarm. Commonly used for outdoor wall alarms, it is always used in pairs: one for transmission and one for reception. The transmitter emits one or more infrared light that cannot be seen by the human eye to form a cordon. When an object passes through, the light is blocked, the receiver signal changes, and the alarm is amplified after processing. Infrared on the radio probe to choose the appropriate response time: too short and easy to cause unnecessary interference, such as small birds flying over, small animals through, etc.; too long will miss the report. The shortest shading time is usually determined at a speed of 10 meters per second. If the person's width is 20 centimeters, the shortest interruption time is 20 milliseconds. More than 20 milliseconds alarm, less than 20 milliseconds no alarm. Infrared radiation detectors are mainly used in buildings such as fences and buildings that are located at relatively long distances. Compared with infrared fences, they are more resistant to rain, dust, and anti-jamming. They are mainly used in home security systems. In the villa and the independent hospital.
Common beam:
At present, common active infrared detectors have two beams, three beams, and four beams, ranging from 30 meters to 300 meters.
In home applications, we use up to 100 meters of products, such as Lecor 30m active infrared radiation (30 frequency conversion on the radio) / 60m active infrared radiation (60 frequency conversion on the radio) / 80m active infrared on the radio / 100m active Infrared on the radio (100 frequency conversion shot) In this distance, infrared fences and infrared detectors can be used: If it is installed and balconies, windows, aisles, etc., use infrared fence; if it is installed in the building, For walls, etc., infrared detectors should be selected; when selecting products, only products larger than the actual detection distance can be selected.
Infrared radiation detector installation instructions:
1. Lines must not be applied in a definite way, and must be hidden. This is the minimum requirement for the safety of the detectors.
2. The farthest horizontal distance from the wall of the detector installed on the wall can not be more than 30m, which requires special attention when the wall is curved in an arc.
3. After the wiring is connected, please use the resistance of the multimeter to test the power supply terminals 1 and 2 of the probe to confirm that there is no short circuit fault before turning on the power supply for debugging.
Anti-theft host and outdoor detectors, the connection between the radio <br> Host with bus zone The single-zone module is very convenient to connect the remote outdoor detector or infrared radiation detector to the host bus zone.
With bus zone anti-theft alarm host : RP408 wired 8 zone anti-theft host, RP408R with receiving module 8 zone anti-theft host, RP416 16 zone anti-theft alarm host, RP428CN 28 zone anti-theft alarm host, RW438CN 38 zone wireless anti-theft alarm host, the full range, can be for selection.
Outdoor detectors : RK315DT multi-intrusion detectors, with two microwave, two passive infrared, four active infrared anti-blocking, vandal-proof, anti-jamming, new technology (for details, please login to understand)
Infrared radiation detector : RK-PB30SA/RK-PB60SA/RK-PB80SA/RK-PB100SA, 30m to 100m active infrared radiation detector, RK-PB30D/RK-PB60D/RK-PB100D, 30m m-100 m infrared frequency conversion detector
Infrared radiation detector routine maintenance
In daily work, due to long-term work outdoors, the detector is inevitably affected by dust, microbes, and snow, frost and fog in the atmosphere. In the past, the detectors often accumulated a layer of dust-like hard on the outer wall. The shell will grow a thick layer of sphagnum moss in the more humid place. Sometimes the bird will also pull the excreta onto the detector. These things will hinder the launch and acceptance of infrared rays and cause false alarms. The user can commission the engineering company to maintain and periodically have the technician check the alarm performance of the anti-theft system.