Computer examination device capable of preventing USB flash disk fraud

Abstract

The invention discloses a computer examination device capable of preventing USB flash disk fraud. The device comprises an inverted L-shaped plate, through grooves are respectively formed in the top surface and the outer side of the inverted L-shaped plate; a plurality of uniformly distributed photoelectric sensors are fixedly arranged in the through grooves respectively; a through slot is formed in the outer side of the inverted L-shaped plate; the outer side of the inverted L-shaped plate is fixedly connected with one ends of two rows of parallel guide rails; the slot is positioned between the two rows of guide rails; sliding bases are installed in the guide rails in a sliding fit mode. Adjusting parts are fixedly mounted on the outer sides of the sliding seats respectively; two parallelpressing plates are arranged on the outer side of the inverted-L-shaped plate, the pressing plates are perpendicular to the outer side of the inverted-L-shaped plate, the pressing plates are fixedly connected with the corresponding adjusting parts respectively, tooth grooves are formed in the top face of the upper pressing plate and the bottom face of the lower pressing plate respectively, and gears are installed on every two adjacent guide rails in each row through a wheel carrier. Through mutual cooperation of the guide rail and the sliding base, the pressing plate can only move in the horizontal direction, stability is high, and reliability is high.

Description

technical field [0001] The invention belongs to the field of computer room auxiliary equipment, in particular to a computer examination device for preventing cheating of U disks. Background technique [0002] With the popularization of computer technology, the form of examination has also undergone tremendous changes. At present, it has begun to change to the direction of paperless examination, especially the computer rank examination in colleges and universities. Every time the examination school has to invest to prevent students from cheating There are a large number of teachers, and there are usually at least two invigilators in each computer room. The authorized announcement number CN105741677B discloses a computer test device for preventing U disk fraud. There is still the possibility of successful cheating, and it needs to be dismantled or folded up after the exam is completed, which is very inconvenient to operate. Contents of the invention [0003] The invention p...

AI Technical Summary

Problems solved by technology

[0002] With the popularization of computer technology, the form of examination has also undergone tremendous changes. At present, it has begun to change to the direction of paperless examination, especially the computer rank examination in colleges and universities. Every time the examination school has to invest in it to prevent students from cheating There are a large number of teachers, and there are usually at least two invigilators in each computer room. The authorized announcement number CN105741677B discloses a computer test device for preventing U disk fraud. There is still the possibility of successful cheating, and it needs to be dismantled or folded up after the exam is completed, which is very inconvenient to operate

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