A Type of Vehicle-mounted Forgotten Mobile Phone Alarm System Based on Sound Wave Detection

The present invention discloses a type of vehicle-mounted forgotten mobile phone alarm system based on sound wave detection, which consists of a sound wave collection unit, a video collection unit, a distance collection unit, a main control unit, an alarm unit and a power supply unit; the main control unit is connected to the sound wave collection unit, the video collection unit, the distance collection unit and the alarm unit; the power supply unit is connected to the sound wave collection unit, the video collection unit, the distance collection unit, the main control unit, and the alarm unit; the present invention will make comprehensive judgment on the acoustical signal, the video signal and the distance signal, in the event that it judges the engine of the vehicle is turned off, the driver leaves the driving seat and the mobile phone is forgotten in the vehicle-mounted mobile phone fixing device, a sound-light alarm is given to remind the driver to take away the mobile phone; furthermore, the forgotten mobile phone alarm system of the present invention is an independent system and gets rid of the vehicle's own electronic circuit signal, as well as is not necessary to modify and connect the signal of electronic circuit and wiring in the car, and thus is suitable for any type of vehicle and mobile phone fixing device, as well as easy to large-scale promote and use.