U-disc alarm device for classroom multimedia platform

Abstract

The invention discloses a U-disc alarm device for a classroom multimedia platform. The device comprises a radio pulse emission module, a radio pulse reception module, a range finding module, an alarmdistance determining module, a buzzing alarm module and a power supply module; and the range finding module calculates distance from the radio pulse emission module to the pulse reflection surface byusing characteristic of a pulse signal emitted by the radio pulse emission module and characteristic of a pulse signal received by the radio pulse reception module. During use, when the multimedia platform is closed by a push-and-pull cover after a class, the push-and-pull cover serves as the pulse reflection surface, the measured distance equals distance from the horizontal plane where a U-disk jack of the multimedia platform is positioned to the horizontal plane where the push-and-pull cover in the top of the multimedia platform is positioned, the alarm distance determining module can determine the platform closing and class ending state, and the buzzing alarm module raises alarm by buzzing. Problems in the prior art are solved, and the device of the invention is high in versatility andlow in 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.

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