Title:
SAFETY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/069675
Kind Code:
A1
Abstract:
Provided is a safety system capable of easily managing the safety of a person present inside a hoistway. The safety system comprises: a car-side device which is attached to the car of an elevator, emits a car-side radio wave, and detects the reception intensity and reception angle of a received radio wave; a hall-side device which is attached at the height position of the lowest floor hall inside the hoistway, emits a hall-side radio wave, and detects the reception intensity and reception angle of a received radio wave; and a person-side device which is attached to a person present inside the hoistway, and emits a person-side radio wave. The car-side device or the hall-side device determines whether the distance between the car and the person is shorter than a threshold distance on the basis of the reception intensity of the person-side radio wave received by the car-side device and the reception angle of the person-side radio wave. The hall-side device causes a control board of the elevator to stop the car if it is determined that the distance between the car and the person is shorter than the threshold distance, and does not cause the control board to stop the car if it is determined that the distance between the car and the person is equal to or longer than the threshold distance.
Inventors:
MORITA HIDEKI (JP)
Application Number:
PCT/JP2022/035614
Publication Date:
April 04, 2024
Filing Date:
September 26, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORP (JP)
International Classes:
B66B3/02; B66B5/00
Foreign References:
| JP2005132543A | 2005-05-26 | |||
| JP2021187577A | 2021-12-13 | |||
| JP2019059620A | 2019-04-18 | |||
| JP2019014582A | 2019-01-31 | |||
| US9359171B1 | 2016-06-07 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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