A USB flash drive alarm device for classroom multimedia platform

Abstract

The invention discloses a USB flash drive alarm device used for classroom multimedia platforms. The device includes a radio pulse transmitting module, a radio pulse receiving module, a ranging module, an alarm distance judgment module, a buzzer alarm module, and a power supply module; Based on the characteristics of the pulse signal received by the module, the distance from the radio pulse transmitting module to the pulse reflecting surface is calculated. When in use, when the teaching ends and the sliding cover closes the multimedia platform, the reflection surface of the pulse is the sliding cover, and the measured distance is equal to the distance between the horizontal plane where the USB flash drive socket of the multimedia platform is located and the horizontal plane where the multimedia top sliding cover is located, and the alarm will be issued. The distance judging module can judge the state that the multimedia platform is closed and the teaching is over, and then the buzzer alarm module can be used to give a buzzer alarm. The invention solves the problems existing in the prior art, and has strong versatility and low false alarm probability.

Description

technical field [0001] The invention relates to a USB flash drive alarm device, more specifically, the invention relates to a USB flash drive alarm device used for classroom multimedia platforms. Background technique [0002] At present, in order to improve classroom teaching quality and teaching efficiency, multimedia teaching is usually adopted. The integrated multimedia platform replaces the original teaching desk. This multimedia platform integrates projectors, computers, monitors and other equipment, and can realize centralized control. The classroom multimedia platform is provided with a centralized console, which is provided with a USB flash drive socket, a power control button, etc., and a push-pull cover for opening or closing the multimedia platform is provided on the top. When the teacher conducts classroom teaching, he needs to copy the pre-prepared courseware and other auxiliary teaching content to the USB flash drive, connect it to the multimedia device throug...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing classroom multimedia platform is easy to lose the USB flash drive. When the multimedia platform is closed through the push-pull cover at the end of the teaching, the teacher can be reminded to take the USB flash drive in time, so as not to bring unnecessary troubles to the classroom teaching.

Images