The main purpose of this study was to create an acousto-optic control lock device to convert\nelectrical signals with a specific sound command using an acousto-optic conversion module, thereby\nimproving the reliability and safety of opening or closing remote controlled door locks, such as car\ncentral locks or rolling doors. We used music playing through a smart phone speaker to create a\nspecial laser pointer to connect with the smart phoneâ??s auxiliary input. The laser pointer (wavelength\nof 630-650 nm and maximum output of 5 mw) lights up when the smart phoneâ??s music starts playing\nat a music frequency matching the light frequency. When the solar panel receives light, it converts the\nfrequency of the light signal into an electrical frequency signal. The current is amplified using the\npower amplifier and then the amplified current flows to the sound recognition module. The sound\nrecognition module performs audio comparison on the set sound signal, and once the comparison is\ncorrect, the output voltage activates the electromagnetic switch on the door to open or close it.
Loading....