In fact, if you checked out the Mitsubishi Electric (Elevators & Escalators): "Hall Motion Sensor (HMS)" link earlier. it is specified that detection diameter underneath the Infrared (IR) sensor at a height of - 1000mm (100cm) and - 2000mm (200cm) is 130mm (13cm) and 250mm (25cm) respectively.
Did not really indicate how far the sensor reach from the door.... but I suppose everything is adjustable.....
I wondering if it is 2 phase detection? The 2000mm is first actuated and when the 1000mm pick up motion and actuated, the door will re-open??
But sensor failure is not uncommon, and sensors can be fooled... some sensor will go haywire, and be affected by the working environment, especially if there's strong lighting....
Art is perception; Perception is art.
What a Happy New Year? Not even Chap Goh Meh yet and we are already at each others throat.
My cat and dog have more sense than some here at CS.
If these two can get on, there is no need to be catty and bitchy to each other:
The one I feel most sorry for:
Please, let us all try and make his golden years happy with pride at what he has achieved:
ya lah, the seemingly safe everyday act of posting in KPT can become fatal, if people starts to behave this way. LOL
Almost all HDB Apartments are equipped with Lift Telemonitoring System (TMS) linked to a centralized master control and monitoring station, faulty sensors will trigger a systematic red flag and be tagged as inoperative with the property management services provider being notified remotely.
You can't have a safe "everyday affair". Sure to turn fatal.
Elevator climbs 31 floors in 15 seconds and crashes through the roof.
With a man inside.
More videos of evil elevators
And one more.
Lifts have become part of our life especially in Singapore. It is timely they start working on improving the door sensor. Modern advanced building lift's door sensor is a complete row not single photo cell. Don't wait till a human accident before the authorities act.
Life is getting very UNSAFE!!.
Taking the MRT is also a everyday affair. Lets hope that the train will not derail and crashes onto the road below.