Title:
BRAKE OPERATION DETECTION DEVICE, ELEVATOR CONTROLLER AND BRAKE OPERATION DETECTION METHOD
Document Type and Number:
Japanese Patent JP2018043863
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for surely and properly detecting start of braking of a brake.SOLUTION: A brake operation detection device detects an operation of a brake using an electromagnet mechanism which has an electromagnetic coil. Therefore, the brake operation detection device comprises: an acquisition part (data input part 21) for acquiring a detection result of a current value of a current which flows the electromagnetic coil; an identification part (angle identification part 251) for estimating a two-dimensional coordinate system in which a time and the current value are coordinate axes respectively, and identifying a first angle which is formed by a first straight line in an orientation where a current value at a time and a current value after a prescribed time interval passed since the time are connected, and a second prescribed straight line, for every time when the acquisition part acquires the current value; and an estimation part 252 for estimating a start time of a braking by the brake on the basis of the first angle identified by the identification part for every time.SELECTED DRAWING: Figure 2
Inventors:
HOSHIZAKI TETSURO
ONISHI TOMOJI
KIGAMOTO MITSUHIRO
ONISHI TOMOJI
KIGAMOTO MITSUHIRO
Application Number:
JP2016180804A
Publication Date:
March 22, 2018
Filing Date:
September 15, 2016
Export Citation:
Assignee:
HITACHI BUILDING SYST CO LTD
International Classes:
B66B5/02
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office