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Title:
VENDING MACHINE, DIRECT-CURRENT MOTOR CONTROL SYSTEM, AND DIRECT-CURRENT MOTOR CONTROL METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/211409
Kind Code:
A1
Abstract:
Disclosed are a vending machine, a direct-current motor control system, and a direct-current motor control method and apparatus. The control system comprises an electric motor on-line detection module, an electric motor blocked rotor detection module, a microcontroller, an electric motor driving module and an upper computer. An on-line state of an electric motor is determined by obtaining a connection state signal of the electric motor, and feedback on or a prompt of the on-line state of the electric motor can be provided by means of the upper computer and the Internet, such that when the electric motor is in an off-line state, feedback or a prompt can be provided for a user in time by means of the upper computer or the Internet, and an electric motor driving circuit is shut down, thereby preventing a null operation of the system and improving the user experience. A blocked rotor state of the electric motor is determined by means of obtaining a counter electromotive force of the electric motor, and the counter electromotive force of the electric motor directly serves as an electric motor blocked rotor determination basis, thereby obtaining a higher accuracy.

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Inventors:
LIU XIHUA (CN)
WU DAOYU (CN)
YANG XUGUI (CN)
TIAN ZHIFENG (CN)
ZHANG GUOJI (CN)
Application Number:
PCT/CN2019/125161
Publication Date:
October 22, 2020
Filing Date:
December 13, 2019
Export Citation:
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Assignee:
GUANGZHOU JETINNO INTELLIGENT EQUIP CO LTD (CN)
International Classes:
H02H7/08; H02P29/024
Foreign References:
CN110021914A2019-07-16
CN105952684A2016-09-21
CN108649863A2018-10-12
CN107134949A2017-09-05
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
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