A circuit and method for controlling the swinging angle of an electric fan

Abstract

The invention discloses a circuit and method for controlling the electric fan shaking angle, and belongs to the technical field of electric fans. The circuit is convenient to use and excellent in effect. The invention aims to provide the circuit for controlling the electric fan shaking angle; the circuit is characterized in that the circuit comprises a control chip, a pyroelectric human body detecting module connected with a configuration pin of the control chip, a motor angle signal acquiring module connected with a communication pin of the control chip, and a driving system connected with the signal output end of the control chip, wherein the driving system is connected with an external electric fan motor; the pyroelectric human body detecting module has a detecting range of 0-360 degrees; and the circuit is used for controlling the electric fan shaking angle.

Description

technical field [0001] The present invention relates to a control of an electric fan, and more specifically relates to a circuit for controlling the swinging angle of the electric fan. At the same time, the present invention also relates to a method for controlling the above-mentioned shaking head angle. Background technique [0002] The oscillating angle of the floor fans on the market is generally 90 degrees, and there are disadvantages such as relatively single design function in the oscillating control. In addition, voice recognition chips such as LD3320 are used to realize the so-called recognition of human voice to control the angle of the fan's head motor and adjust the speed of the motor's shaking head. Due to the limitation of the control accuracy of the voice recognition chip and the influence of environmental noise, in this way, the fan The bit error rate of the control is relatively high, and the fan may malfunction. It is inconvenient to manually control the f...

AI Technical Summary

Problems solved by technology

[0002] Floor fans on the market generally have a shaking angle of 90 degrees, and there are disadvantages such as a relatively single design function in terms of shaking head control.

In addition, voice recognition chips such as LD3320 are used to realize the so-called recognition of human voice to control the angle of the fan's head motor and adjust the speed of the motor's shaking head. Due to the limitation of the control accuracy of the voice recognition chip and the influence of environmental noise, in this way, the fan The bit error rate of the control is relatively high, and the fan may malfunction

It is very inconvenient to manually control the fan swing. If the user is not on site and there is intentional or unintentional misoperation, the fan motor may cause other safety hazards due to the reverse electromotive force generated by the misoperation, increasing the possibility of paralyzing the fan control system.

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