An automatic dust-absorbing blackboard eraser based on inclination measurement

Abstract

The invention discloses a blackboard eraser capable of automatically sucking dust on the basis of inclination angle measurement. The blackboard eraser includes a brush layer, a dust sucking and storage layer, a circuit control layer and a protection housing, wherein the circuit control layer includes an electric energy management module, a chargeable lithium battery and a motor control module; themotor control module utilizes an inclination angle measurement circuit and a main control circuit to detect the position and state of a blackboard eraser body and makes a correct output response after conducting treatment and making judgment on the inclination angle to achieve automatic control over a motor. Dust suction to the maximum degree can be achieved, and damage caused by dust to the environment and the health of the human body is reduced; meanwhile, according to measurement of the inclination angle, judgement processing is completed by software, the motor is automatically and accurately controlled, and the problems such as switching losses, switching failures and switching damage of hardware are avoided.

Description

technical field [0001] The invention relates to the technical field of sensing and detection, and more specifically relates to an automatic dust-absorbing blackboard eraser based on inclination measurement. Background technique [0002] Blackboard eraser is one of the indispensable teaching aids in the teaching process. Although with the improvement of the level of economic education, the teaching method has undergone great changes, and the popularity of multimedia equipment and the Internet has gradually modernized the teaching aids. Outstanding advantages such as intuition are still irreplaceable and widely used, so the frequency of use of blackboard erasers is still very high. [0003] However, the biggest problem existing in the use of ordinary blackboard erasers is the problem of chalk dust. Since the ordinary blackboard eraser does not do any vacuum treatment, dust will fly around when wiping the blackboard. Dust not only pollutes the classroom environment, but also gr...

AI Technical Summary

Problems solved by technology

[0003] However, the biggest problem existing in the use of ordinary blackboard erasers is the problem of chalk dust. Since the ordinary blackboard eraser does not do any vacuum treatment, dust will fly around when wiping the blackboard. Dust not only pollutes the classroom environment, but also greatly increases it. The incidence of respiratory diseases seriously threatens the health of teachers and students

[0004] At present, there are some dust-absorbing blackboard erasers on the market, which are mainly divided into two categories: one is the board eraser made of dust-absorbing materials such as sponges as the brush part, but due to the limitation of the characteristics of the material itself, its dust-absorbing effect is weak; One is the electric dust-absorbing blackboard eraser. This kind of blackboard eraser refers to the principle of the vacuum cleaner. The overall dust-absorbing effect is better, but there is an obvious problem in the process of use: repeated switching. At present, this type of electric dust-absorbing blackboard eraser is only equipped with an external The button switch is used to turn on and off, but due to the high frequency of use of the blackboard eraser, the switch needs to be operated repeatedly in a short period of time, which has a great impact on the service life of the switch and is easy to cause damage to the switch. Dust will inevitably be covered during the process, which will reduce the sensitivity of the switch, causing the motor to fail to start or start by mistake, affecting the use of the product

In addition, frequent switching states will generate large switching losses, wasting electric energy and shortening the service life

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