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Lasers as an element od security system

Molky

New member
Joined
Dec 23, 2020
Messages
4
Points
1
Good afternoon, guys! I am going to install a reliable and modern home security system. I am currently considering the Ajax brand. Their products look good and functional. I like the idea of motion sensors. Could you please explain to me how they work> As I. understand, they also use some lasers that detest any movement and notify the user about that. I've read that several cameras also work the same way. Am I right? Also, do you use any security systems at home? Which ones?
 



Giannis_TDM

Well-known member
Joined
Apr 27, 2019
Messages
561
Points
63
Good afternoon, guys! I am going to install a reliable and modern home security system. I am currently considering the Ajax brand. Their products look good and functional. I like the idea of motion sensors. Could you please explain to me how they work> As I. understand, they also use some lasers that detest any movement and notify the user about that. I've read that several cameras also work the same way. Am I right? Also, do you use any security systems at home? Which ones?
The systems that use laser diodes use low power IR ones with a photodiode, The photodiode detects any light reflecting from the object coming back into the diode. When it reaches a threshold (like a hand braking the beam or a human passing by) the sensor triggers.
 




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