Title:
ELECTRIC MASSAGER, METHOD FOR DETERMINING CONTACT STATE OF ELECTRIC MASSAGER WITH HUMAN BODY, AND NOISE REDUCTION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/217994
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of electric massage devices, and disclosed therein is an electric massager, a method for determining a contact state of said electric massager with a human body, and a noise reduction control method, which solve the problems of high production and assembly difficulty and increased hardware costs that are present in a means for determining whether an electric massager is in contact with a human body as part of a segmented noise reduction solution of traditional technology. A real time PWM pulse width value T of an electric massager is compared with a PWM pulse width value Tn of the electric massager in a no load state and at a same operating level when running at a set operating level rotational speed; if the absolute value of the difference of T and Tn is between N1 and N2, then is it determined that the electric massager is currently not in contact with a human body, and the rotational speed of a motor is reduced to an idle speed running state by means of adjusting a PWM pulse width value; and in the idle speed state, if it is detected that the rotational speed of the motor is continuously lowered by a specified rotational speed, then it is determined that said massager is in contact with a human body, and the motor is made to return to the set operating level rotational speed by means of adjusting the PWM pulse width. The determination method and the noise reduction control method of the present invention are suitable for various electric massagers such as a fascia gun.
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Inventors:
XIANG MINGJUN (CN)
YANG KAI (CN)
ZHANG WEN (CN)
YANG KAI (CN)
ZHANG WEN (CN)
Application Number:
PCT/CN2022/071834
Publication Date:
October 20, 2022
Filing Date:
January 13, 2022
Export Citation:
Assignee:
SICHUAN QIANLI BEOKA MEDICAL TECH INC (CN)
International Classes:
A61H23/02; H02P29/00
Foreign References:
| CN113057872A | 2021-07-02 | |||
| CN108471858A | 2018-08-31 | |||
| CN109028460A | 2018-12-18 | |||
| CN104980066A | 2015-10-14 | |||
| CN111671638A | 2020-09-18 | |||
| CN112545866A | 2021-03-26 |
Attorney, Agent or Firm:
CHENGDU HONGQIAO PATENT LAW OFFICE (CN)
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