Lomba Program Kreativitas Siswa




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Kirjas Award


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SOIL CRACK DETECTOR PROTOTYPE IN ARTIFICIAL LAKE DIKE

SOIL CRACK DETECTOR PROTOTYPE IN ARTIFICIAL LAKE DIKE

By :
REACH 13 (Research, Education, and Care Human of MAN 13 Jakarta)
RETEK Group


ABSTRACTION


Key Word : Lake Gintung, Light Detector, “X” Detector


Exactly at 02.30 wib date 27 marches 2009 lake gintung can't hold again the water, because there are soil crack around the dike. This crack is initially was caused by tune stricture and decrease the water volume around the dike because there are development aroud lake gintung's dike. The development of solid citizen resident at lake area was primary factor that broken down lake's dike. Because, if there is a weight increase of soil surface, so the tension in soil including soil pore tension will produce increasing. This matter causes decreased stability of the slope. It's the impact of the development around the dike.
Because the increasing of the water volume around the dike, the consequences was the dike can't hold back the big water pressure. So, the dike was broken down and the water soaks hundreds house at moment the occupants stills asleep. Therefore, researcher make tool that can detect artificial lake dike crack. Tool that has made by researcher uses energy conservation laws principle concept, magnetic field, Ohm law, AC work principle, and Fotodioda. The making of this tool, was done as testing from indicator that this tool can works well. study that has done was meant to look for theories and tool work mechanism, upon which reference, so the tool that researcher has made can work as according to law theories that had appear. Researcher hopes that this research can answer and decrease the problem that occured because of the broken down of lake gintung and later can be applied in a state of reality.
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Reading list : (1996-2009)
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SMART HOUSE

SMART HOUSE
Electric Light Use Economizing Solution & Flood Detection in Housing Scale


By
REACH 13 (Research, Education, and Care Human of MAN 13 Jakarta)
RETEK Team (RETEK)


ABSTRACTION



Key Word : LDR, Sun Light, lamp, flood detector


It has done making of prototype" Smart House" functioned to turn on the light automatically and to detect flood. The background making this tool was remembering the rarity of national electricity energy that caused electricity use redundantly, and often the happening of flood at indonesia especially at jakarta. This tool work system uses LDR (Light Dependent Resistor) That is functioned as electric switch with make use light intensity in run the function. For flood detector is used water increase (flood) as conductor (electric switch) and to jangle alarm. From experiment result, prototype" Smart House" can turn on the light led automatically by using LDR series as automatic electric switch that makes use sun light intensity. At the time of resistence light of LDR low, that will causes the LED lamp dull. Conversely, at the time of resistence low light intensity LDR was very low, that will causes the LED lamp glow. Besides, this prototype also can detect flood that caused conductor electric switch in bazer to get current from water that rise in pisvot tube, that will make the alarm rang. Therefore, researcher propose so that this tool can be developed furthermore and aplicated to help decreasing electric light use intensity in times of not necessaries. Besides, this tool also intended can help society that live in flood sensitive area, so people always ready to evacuate themself and their valuable things.
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