Line-scan digital camera storage type automatic blackboard

Abstract

The invention relates to a line-scan digital camera storage type automatic blackboard. The line-scan digital camera storage type automatic blackboard comprises a work table, a rotary blackboard body, rotary encoders, an alternating current motor, an erasing head, a push rod motor and a line-scan digital camera. The work table is fixedly provided with two rotary shafts, the rotary blackboard body is arranged outside the two rotary shafts in a sleeved mode, the alternating current motor drives the rotary blackboard body to rotate around the two rotary shafts through a belt, and the rotary encoders are fixed to the rotary shafts. The erasing head is fixed to one side of the rotary blackboard body, and the push rod motor pushes the erasing head to move horizontally so that the erasing head and the surface of the rotary blackboard body can be attached. The line-scan digital camera is correspondingly fixed to one side of the rotary blackboard body. The line-scan digital camera storage type automatic blackboard is convenient to operate, high in automation degree and capable of achieving automatic erasing. Flying dust in the erasing process is avoided, reflection is avoided, the vision of students is effectively protected, and the blackboard-writing content can reappear.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a line array camera storage type automatic blackboard. Background technique [0002] In schools, blackboards are the most common teaching tool. With the improvement of people's quality of life, we are more and more concerned about our health, so the shortcomings of our common ordinary blackboards slowly come into people's field of vision. Ordinary blackboards are usually dusty when we erase them after writing. Not only the teacher will inhale the dust, but the students sitting in the front rows will also inhale the dust. [0003] In terms of materials: the blackboard was first painted on the surface of wood, cement and other hard objects with black paint. This kind of blackboard is the earliest blackboard. It has not been used for a long time and its quality is relatively poor. In the 1990s, the terrazzo glass, this kind of blackboard material is relatively reflective, and the ...

AI Technical Summary

Problems solved by technology

The current color-coated steel plate and composite material board are more expensive, and it needs to be grooved on the wall, which will cause greater damage to the wall

[0004] In addition, the existing blackboard is not enough after writing, so it is necessary to erase the written words, which makes some students who have not had time to write on the blackboard miss some important information, which is very inconvenient

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