Blackboard eraser device capable of automatically collecting dust and method

Abstract

The invention provides a blackboard eraser device capable of automatically collecting dust and a method. A plurality of through holes run through the upper portion and the lower portion are formed inthe bottom face of a box body, and blackboard eraser cotton is arranged around the through holes. Fans are arranged at openings in the upper ends of the through holes, air outlets of the fans are located in a semi-closed space, and dust suction cotton is installed at an outlet of the semi-closed space. A battery supplies power to an electronic control unit, a vibration collection unit and a motordriving unit. The vibration collection unit acquires vibration positions at set intervals and transmits the vibration positions to the electronic control unit, the electronic control unit judges whether the box body is moved or not according to the changes of the vibration positions, and then the motor driving unit is controlled to drive the fans to work. According to the device, automatic dust collection is achieved, the energy consumption of a motor is reduced, and the working time is prolonged.

Description

technical field [0001] The invention relates to an automatic dust collector. Background technique [0002] Teachers write on the blackboard and calculate on the blackboard every day. It is inevitable that they need to erase the chalk characters with a blackboard eraser. However, a large amount of chalk dust will be produced every time, which seriously affects the health of the teachers. Installing motor and negative pressure fan on the board eraser to absorb chalk dust is the design of dust collection board eraser commonly used at present, but these board erasers all utilize manual switch or mechanical trigger mode to start or close the dust collection motor. For example CN2011103980648 automatic dust-absorbing blackboard eraser, CN2015206259096 automatic dust-absorbing blackboard eraser etc. all are to design a kind of eraser structure, utilize dust-absorbing motor, adopt manual or mechanical trigger mode to start. [0003] However, in actual use, on the one hand, the teac...

AI Technical Summary

Problems solved by technology

[0003] However, in actual use, on the one hand, the teacher cannot notice the switch of the equipment during the class, and it is difficult to trigger and use the dust collection device correctly, so that the eraser loses the dust collection effect; on the other hand, some inventions use fixed-speed motors, which greatly consumes Save energy, shorten usage time

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