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Patent Searching and Data


Title:
ELEVATOR CAR POSITION DETECTION SENSOR
Document Type and Number:
WIPO Patent Application WO/2018/207291
Kind Code:
A1
Abstract:
Provided is an elevator car position detection sensor capable of suppressing erroneous detection of presence/absence of a plate. This elevator car position detection sensor is provided with: a first coil, which is provided to either an elevator car or a hoistway, and which outputs an excitation magnetic field toward a plate that is provided to the other car or the hoistway; a second coil that is provided on the side opposite to the first coil with respect to the plate; a shield wall for shielding an end portion of the plate, said end portion being on the car side or the hoistway side; and a determining circuit that determines the phase of an alternating current voltage corresponding to the frequency of the excitation magnetic field outputted from the first coil with an alternating current voltage generated in the second coil.

Inventors:
INOUE, Jin (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
MOCHIZUKI, Keita (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
ISHIKAWA, Masahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
SHIRATSUKI, Akihide (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/017719
Publication Date:
November 15, 2018
Filing Date:
May 10, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
B66B3/02; H01H36/00
Foreign References:
JP2014156350A2014-08-28
JPS464910Y
JPS613279U1986-01-10
JPS616236U1986-01-14
JPS51118246A1976-10-18
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (Takada, Takahashi & Partners Konwa Bldg. 7F, 12-22 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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