Energy-saving control system based on compound band-pass filtering and amplifying circuit and used for range hood

Abstract

The invention discloses an energy-saving control system based on a compound band-pass filtering and amplifying circuit and used for a range hood. The energy-saving control system is mainly composed of a central processing unit, an analogue/digital (A/D) converter, a motor, an alarm, a display, a power supply, a smoke sensor, a signal anti-interference processing circuit and an active rectifying, filtering and voltage-stabilizing circuit, wherein the A/D converter, the motor, the alarm, the display and the power supply are all connected with the central processing unit, the smoke sensor is connected with the A/D converter, the signal anti-interference processing circuit is serially connected between the smoke sensor and the A/D converter, and the active rectifying, filtering and voltage-stabilizing circuit is serially connected between the power supply and the central processing unit. The energy-saving control system is characterized in that the band-pass filtering and amplifying circuit is further serially connected between the A/D converter and the central processing unit; and the band-pass filtering and amplifying circuit is composed of a signal amplifying circuit and a signal filtering and amplifying circuit. The control system for the intelligent domestic range hood, which is disclosed by the invention, is capable of accurately acquiring a concentration value of lampblack, and accurately controlling the range hood to be automatically turned on or off, thereby providing a good living environment for people.

Description

technical field [0001] The invention relates to an energy-saving control system for range hoods based on a composite band-pass filter amplifier circuit. Background technique [0002] At present, the range hoods produced and sold in China all have key switches for operating the range hoods, but the key switches of such range hoods are prone to problems such as failure and reduced sensitivity during use. Moreover, people often forget to turn off the range hood after use, thus causing a large amount of waste of energy. [0003] Therefore, people are in urgent need of a range hood control system that can control the range hood to automatically open or close according to the concentration of the range hood, so as to meet the requirements of convenience, environmental protection and energy saving. Contents of the invention [0004] The purpose of the present invention is to overcome the defect that the range hood in the prior art cannot be automatically turned on or off accordi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the range hood in the prior art cannot be automatically turned on or off according to the concentration of the oil fume. The invention provides an energy-saving range hood based on a composite bandpass filter amplifier circuit Control System

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