Author Topic: thesis- Auto light dimmer for light posts. (Read 1576 times)

Mr. Nice guy · « **on:** July 01, 2009, 02:34:47 PM »

Auto light dimmer for light posts.

Kapag may approaching na passerby sa lightpost, mag brighten ang ilaw, upon makalampas sya dito sa covered ng ilaw, mag dim sya.

Just compute if how many lightposts we have and if we implement this, ilang watts ang ma-save natin.

Lightposts runs from sunset hangang sunrise, kasi may mga sensor na ang lightposts, so that is around 10 to 12 hours, if you can save around 25% energy per light post, so compute mo sa buong Metro Manila ang pwede matipid.

hello poh..mgta2nong poh sana? tinanggap poh ng prof. nmn 2 as thesis topic, ang kaso poh ngcomment sya dun sa sensor na ga2mitin dw nmin,tanong ko poh sana ano poh kya mgandng sensor ang gamitin..tska ano poh kya pwd idag2 d2...salamat po...

Philippine Electronics Forum · « **on:** July 01, 2009, 02:34:47 PM »

zer0w1ng · « **Reply #1 on:** July 01, 2009, 02:56:49 PM »

PIR sensors detect infrared movements.
This is commonly used in auto-light lamps when there is movement.

A suggestion is to put the sensor of the lightpost to before and next post.
This way when a person is walking towards it, the light is always ahead of him.

Philippine Electronics Forum · « **Reply #1 on:** July 01, 2009, 02:56:49 PM »

akhen · « **Reply #2 on:** July 01, 2009, 03:01:20 PM »

kung sensor na pangdetect ng heat ng tao pwede na ang IR sensor jan.
Or pwede din motion sensor kaya lang msyadong sensitive yan kahit bumagsak na dahon nasesense nya.

Philippine Electronics Forum · « **Reply #2 on:** July 01, 2009, 03:01:20 PM »

ultrasonic™ · « **Reply #3 on:** July 02, 2009, 02:54:09 AM »

Quote from: akhen on July 01, 2009, 03:01:20 PM

kung sensor na pangdetect ng heat ng tao pwede na ang IR sensor jan.
Or pwede din motion sensor kaya lang msyadong sensitive yan kahit bumagsak na dahon nasesense nya.

strongly agree pwde na kahit IR sensor

Philippine Electronics Forum · « **Reply #3 on:** July 02, 2009, 02:54:09 AM »

insomartin · « **Reply #4 on:** July 02, 2009, 03:25:54 AM »

OT
di ba mas ok ang magnetic sensor? i mean it's outdoor and unless self cleaning ung tapat nang ir...
also... what if kung may mag vandal nang ir sensor? (masamang biro na lagyan nang electrical tape)
much more interesting gawin ang magnetic sensor right? capacitive ata term dun... i don't know.

another thing is paano hindi masisira yung starter constantly on and off...
and long start up times... high pressure sodium lamps... sna low power standby mode... magdidim lang sya...
or don't user high pressure sodium lamps at all... LED i think...

Philippine Electronics Forum · « **Reply #4 on:** July 02, 2009, 03:25:54 AM »

toasted siopao · « **Reply #5 on:** July 02, 2009, 06:48:45 AM »

I think ang challenging part ng project na ito ay ang type ng sensor na gagamitin at ang location ng sensor sa lightpost or sa daanan.

You can experiment on the different types of sensors, but please don't forget that you are doing this not only on a single lightpost but a series of them.

The best thing for me is to have around 5 lightposts in checking the design, anywhere below that 5 I think will give you inconclusive results on how your system will work.

redjump19 · « **Reply #6 on:** October 03, 2010, 06:16:14 PM »

para saan yung thesis? for microcontroller project?

iyo karpo · « **Reply #7 on:** October 03, 2010, 07:50:42 PM »

Quote from: ultrasonic™ on July 02, 2009, 02:54:09 AM

strongly agree pwde na kahit IR sensor

kung outdoor lang...ok lang ung motion detection...
http://wattstopper.com/products/productline_list.html?category=63&type=Commercial

pero kung sa CR na walang bintana...dapa dual (IR at motion detection).

Philippine Electronics Forum · « **Reply #7 on:** October 03, 2010, 07:50:42 PM »

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