Spittoon trash can with filtering circuit

Abstract

The invention discloses a spittoon trash can with a filtering circuit. The spittoon trash can comprises a sputum bag, a box body, a box cover, a solar cell panel and a single-chip microcomputer, wherein the bottom of the sputum bag is connected to the bottom of the side wall of the box body through a shaft, a stepping motor is arranged on the shaft, the side wall of the sputum bag is fixed to the side wall of the box body, the end wall of the sputum bag is in the shape of an arc, the length of the arc of the end wall of the sputum bag is larger than the length of the side wall of the box body, the solar cell panel is electrically connected with the single-chip microcomputer, the output end of the single-chip microcomputer is connected the stepping motor, a proximity switch is arranged on the side wall of the box body, an infrared sensor is arranged on an opening of the sputum bag, both the proximity switch and the infrared sensor are connected to the input end of the single-chip microcomputer, an amplifying circuit, a sampling circuit and the filtering circuit are sequentially connected in series between the proximity switch and the single-chip microcomputer, and the filtering circuit comprises an operational amplifier A1, a capacitor C1, a capacitor C2 and a capacitor C3. Thus, sputum can be conveniently stored, and the environment can be protected.

Description

technical field [0001] The invention relates to the field of daily life, in particular to a spittoon trash can with a filter circuit. Background technique [0002] At present, spittoons are rarely installed in public trash cans, and air pollution and automobile exhaust emissions make people's respiratory tract produce a lot of phlegm. Even if some trash cans are equipped with spittoons, a small circular The spittoon has a relatively small opening, which is inconvenient for passers-by to spit sputum into the spittoon accurately. In addition, the spittoon is set in the open air. If there is too much sputum, it will cause peculiar smell around the trash can, which is easy to attract flies in summer. Contents of the invention [0003] The purpose of the present invention is to provide a spittoon trash can with a filter circuit to achieve the advantages of convenient storage of sputum and environmental protection. [0004] In order to achieve the above object, the technical sc...

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Problems solved by technology

[0002] At present, spittoons are rarely installed in public trash cans, and air pollution and automobile exhaust emissions make people's respiratory tract produce a lot of phlegm. Even if some trash cans are equipped with spittoons, a small circular The spittoon has a relatively small opening, which is inconvenient for passers-by to spit sputum into the spittoon accurately. In addition, the spittoon is set in the open air. If there is too much sputum, it will cause peculiar smell around the trash can, which is easy to attract flies in summer

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