Title:
IMPACT PROTECTION CONTROLLER FOR ELECTRIC HEIGHT-ADJUSTABLE DESK
Document Type and Number:
WIPO Patent Application WO/2018/214194
Kind Code:
A1
Abstract:
An impact protection controller for an electric height-adjustable desk. The controller comprises an MCU, a motor drive circuit, a motor current sampling circuit, a current amplifier circuit, a Hall pulse generator, and a Hall filter. The MCU controls the motor drive circuit. A signal transmitted by the Hall pulse generator is sent to the MCU via the Hall filter. A motor current is sampled by the motor current sampling circuit, and the result is sent to the MCU via the current amplifier circuit to detect a change of the current. The controller further comprises a shock switch provided outside of and connected to the MCU, or provided inside of the MCU. The present invention combines current detection and shock detection to improve sensitivity and reliability of impact protection.
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Inventors:
LIU HUI (CN)
XUE SHIGUANG (CN)
LI LONG (CN)
XUE SHIGUANG (CN)
LI LONG (CN)
Application Number:
PCT/CN2017/089089
Publication Date:
November 29, 2018
Filing Date:
June 20, 2017
Export Citation:
Assignee:
OKIN REFINED ELECTRIC TECHNOLOGY CO LTD (CN)
International Classes:
A47B9/00; H02P29/00; H02H5/00
Foreign References:
| CN106308036A | 2017-01-11 | |||
| CN2549807Y | 2003-05-14 | |||
| CN104460697A | 2015-03-25 | |||
| CN201467046U | 2010-05-12 | |||
| JP2000333734A | 2000-12-05 |
Other References:
See also references of EP 3633850A4
Attorney, Agent or Firm:
HANGZHOU ZHEKE PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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