Install Infrared Beams Detector

Question you may have and answer you may need before shopping home security system.
Post Reply
vedard
Posts: 577
Joined: Wed Dec 05, 2018 12:27 am

Install Infrared Beams Detector

Post by vedard »

Installing active infrared beams detector is harder than installing passive infrared detector. The beams detector is installed at outdoor open space. It is always fixed on pillar or on wall. We should firstly confirm the protection line and draw the installing place on drawing. Then we mark the accurate installing point on fixing object such as wall or pillar by level instrument or other tools.
Installing ways:
1. Installing the beams on pillar: there are some types of pillars such as pipe and square columns. The shapes are “1” shape, “z” shape or “L” shape. We should choose the correct type of pillar according to installing building feature and security protection requirement. The pillar should be fixed on ground or other objects strongly and without moving or shaking. It is important to ensure the beams detector installing and working properly.
2. Installing the beams on wall: the infrared beams can be installed on wall or fence, windows directly. The Optical lens of the detector has automatic up and down adjustment of 20 degree. Use fixing bracket to install the infrared beams on surface of wall or frame of windows.
Principles of installing infrared beams detectors:
Detectors installed on passageway: It is used to stop illegal passing and avoid false alarm caused by pet or small animals. So, the beams should be installed more than 50 cm (from the infrared beams hole) over the ground. The beams blocking response speed should be set at fast rate.

Use Infrared Beams Detector to stop illegal climbing over the wall

Detectors installed on parapet wall: It is used to stop illegal climbing over the parapet wall. The beam can be installed over the top of the parapet wall or over the side of the parapet wall. It should be installed more than 25 cm (from the infrared beams hole) over the top of the parapet wall to avoid false alarm caused by bird or cat etc. animals. And the distance should be less than 30 cm between the beams hole and the wall inside part. When it is installed at side part of the parapet wall, it should be installed at outside part of the wall and near the top part.

Fixing break beams on wall by pillar
The installation way should be chosen according to protection requirement and building features. 4 beams infrared detector performed better than 3 beams to avoid false alarm.
[attachment=0]4 beams infrared grating.jpg[/attachment]
Attachments
4 beams infrared grating.jpg
4 beams infrared grating.jpg (76.92 KiB) Viewed 2738 times
Shop Focus brand wireless alarm, HB solar power alarm, HST fire alarm at https://www.vedardalarm.com

vedard
Posts: 577
Joined: Wed Dec 05, 2018 12:27 am

What is digital frequency conversion and what advantages does it have?

Post by vedard »

Answer: Before answering this question, let’s talk about an incident that happened in a large cable company in Zhongshan, Guangdong. On a rainy night, a group of thieves held a TV remote and pointed at the infrared receiver and projector. Driving a large truck to easily cross the infrared protection zone and stole the company's 10 tons of cables.
Why is this happening? Why didn't the anti-theft device call the police? It turns out that most of the thieves bought a pair of radio cameras to study at home in order to succeed in theft. One day they discovered that they used the TV's remote control to aim at the receiver and did not call the police.
Is it really like this? In fact, the TV remote control also emits infrared light. Without coding technology, it is impossible for the receiver to separate the infrared light source from where it comes from, just like a bus without an automatic ticket vending machine using identification technology. You can get on the bus with a fake coin. Products using this kind of anti-theft device are useless.
To avoid this problem, you can only use frequency conversion! Digital frequency conversion is actually a very complicated technology. The visual expression is that we shine a lot of flashlight beams of the same power and the same color onto a dot with a diameter of 3 meters at the same time. They switch on and off in turn. Then we need to be able to divide There are a few flashlights on the center of the circle, and who is on and off. Well, it’s scary to think about it. There are a lot of mathematics and electronic technologies involved. We will not explain in detail. Simply put, the biggest advantage it brings is that it is impossible to use the same frequency or different frequencies. Light interference; it is impossible to take the remote control to cross the anti-theft protection area.
Shop Focus brand wireless alarm, HB solar power alarm, HST fire alarm at https://www.vedardalarm.com

Post Reply