Abstract
Now, in public places and public corridor, light long time measured by the phenomenon is
very common, which caused a great waste of energy to the society. On the other hand, due to
frequent switching or man-made factors, the damage to the wall switch rate is very high,
increasing the amount of repair, waste of funds. Sound and light control of street lamp is not the
problem. In view of the present society many places use pilot lamp lighting, can not realize
intelligent lighting lighting caused a huge waste of energy. In response to the science and
energy-saving emission reduction of scientific development to design the sound and light control
of street lamp control system.
Homemade DC stabilized voltage power supply by using this system, according to the
photosensitive resistor change to determine the light intensity, measured voice signal by
microphone, LM324 for signal amplification and comparison circuit. By 74LS08D and gate,
screening of signal, which sends a signal to open or close to the switch part. Relay control driver
bulb, for delay by the RC charging and discharging circuit. To the outside world through the
selection of signal, sound and light control of street lamp realizes the automatic control of light.
Only when the light is dark and sound, lights will automatically light up, and delay 20 seconds out.
This system can control the lamp good light out, with sound and light circumstances lights, in
other cases the lamp, so as to achieve the effect of saving energy.
The sound and light control of street lamp controller can automatically realize people to
light, people walk lamp, convenient and practical. Not only the electric energy saving, but also
can prolong the service life of the bulb. Can be widely applied to the stairs, corridors, bathrooms
lighting control and living area and other public places. Word controller is economical and
practical, even the general's footsteps can light the bulb, lighting.
Keywords: light control; LM324; relay; delay