Mitsubishi Electric Corporation

Hideki Shiozaki

Hiroyuki Murakami

Toshiaki Kato

Daiki Fukui

Daisuke Nakazawa

Kunikazu Koura

Satoshi Mii

Akihiro Nakaya

Ryozo Kiyohara

Morimasa Yokota

A break detection device includes a sensor, an abnormal variation detection unit (), a storage unit (), an arithmetic unit (), and a break determination unit (). The arithmetic unit () increases a determination score when the abnormal variation detection unit () detects occurrence of an abnormal variation when a car () passes a position stored in the storage unit (). The arithmetic unit () decreases the determination score when the abnormal variation detection unit () does not detect the occurrence of the abnormal variation when the car () passes the position. The break determination unit () determines whether or not a broken portion is present in a rope on the basis of the determination score.

Break detection device configured to determine whether or not a broken portion is present in a rope

Obtained is a remote update system for an elevator control program, which is capable of sequentially realizing update of control programs of a plurality of elevators with reduced communication time and costs without stopping the plurality of elevators at the same time. A serverdelivers to a representative elevator() update data including differential information between the control program of a version before update and the control program of the latest version to be updated to through a communication line, and the representative elevator() and other elevators() to(N) sequentially transfer the update data according to a predetermined transfer order, and update their own control programs based on the update data including the differential data.

Remote update system for elevator control program

Growing community of inventors

Tokyo, Japan

Hideki Shiozaki