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Motor shaft displacement detection device, motor control system and method and electric toothbrush

A displacement detection and motor control technology, applied in the field of detection, can solve the problem of not being able to adjust the vibration frequency of the motor by brushing force

Pending Publication Date: 2021-06-01
GUANGZHOU STARS PULSE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a motor shaft displacement detection device, a motor control system and method, and an electric toothbrush, which can solve the problem that the traditional electric toothbrush cannot adjust the vibration frequency of the motor according to the brushing force

Method used

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  • Motor shaft displacement detection device, motor control system and method and electric toothbrush
  • Motor shaft displacement detection device, motor control system and method and electric toothbrush
  • Motor shaft displacement detection device, motor control system and method and electric toothbrush

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Embodiment Construction

[0046] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0047] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.

[0048] It should...

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Abstract

The invention is suitable for the technical field of detection, and provides a motor shaft displacement detection device, a motor control system and method and an electric toothbrush, and the motor shaft displacement detection device comprises a magnetic field generation and induction module and a signal processing module. And when a motor shaft is extruded to generate displacement deformation, a third magnetic field generated by the motor shaft is changed. The change of the third magnetic field influences the change of a second magnetic field at the position of the magnetic field generation and induction module. The magnetic field generation and induction module induces the change of the second magnetic field to generate an analog signal and transmits the analog signal to the signal processing module. The signal processing module converts the analog signal into a digital signal and outputs the digital signal. A main controller identifies the deformation displacement condition of the motor shaft according to the digital signal and adaptively adjusts the output control signal, and the motor changes the vibration frequency according to the adjusted control signal. Therefore, a motor of the electric toothbrush adjusts the vibration frequency according to the current tooth brushing force, and the experience feeling of a user is enhanced.

Description

technical field [0001] The application belongs to the technical field of detection, and in particular relates to a motor shaft displacement detection device, a motor control system and method, and an electric toothbrush. Background technique [0002] The control system of a traditional electric toothbrush mainly includes a main controller, a motor driver, a motor and a battery module. The battery module is used to provide power to the main controller and the motor driver, the main controller is used to generate PWM (pulse width modulation, pulse width modulation) control signal to the motor driver, and the motor driver drives the motor according to the PWM control signal to achieve cleaning Effect. [0003] The control system of the traditional electric toothbrush belongs to open-loop control. When the electric toothbrush is working, the vibration frequency of the motor cannot be adjusted in real time according to the strength of brushing teeth. The intelligence is low, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02A61C17/34
CPCA61C17/34G01B7/02
Inventor 吴胜斌吕少波
Owner GUANGZHOU STARS PULSE CO LTD