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Title:
IMPACT DETECTION CIRCUIT AND METHOD FOR OPERATING OF THE SAME
Document Type and Number:
Japanese Patent JP2017096950
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic device equipped with an impact detector for a motor capable of detecting impact more quickly and precisely.SOLUTION: An electronic device 1 includes an operation unit 5 capable of generating a signal representing a physical quantity. A motor 4 includes a rotor in a magnetic circuit and two terminals, positive and negative. The operation unit 5 controls a motor 4 via the two terminals and includes at least one impact detection circuit connected between the operation unit 5 and the motor terminals for detecting external impact acted on the motor 4. The operation unit 5 detects a rotation direction of the rotor by analyzing an induced voltage detected by the detection circuit after impact using an algorithm to transmit a blocking pulse having reverse polarity of the induced voltage.SELECTED DRAWING: Figure 1

Inventors:
FRANCOIS KLOPFENSTEIN
BERTHOUD JOERG
NICOLAS JEANNET
YVES GODAT
THIERRY BONNET
Application Number:
JP2016224816A
Publication Date:
June 01, 2017
Filing Date:
November 18, 2016
Export Citation:
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Assignee:
ETA SA MFT HORLOGERE SUISSE
International Classes:
G04C3/14; H02P8/02
Domestic Patent References:
JPS5716376A1982-01-27
JP2012002533A2012-01-05
JPS5877487U1983-05-25
JP2011117974A2011-06-16
JPS56110073A1981-09-01
JPS54155079A1979-12-06
JPS5866887A1983-04-21
JP2011203191A2011-10-13
Foreign References:
WO2009110602A12009-09-11
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa