The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Jun. 16, 2010
Kazunori Washio, Tokyo, JP;
Rikio Kondo, Tokyo, JP;
Masunori Shibata, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In an elevator device, a signal diagnosis device includes: a signal input section to which a sensor signal from a sensor is input; a disconnection detecting section for outputting a diagnosis signal for detecting disconnection to the sensor and detecting a state of a signal turned back at the sensor to be input so as to detect whether or not disconnection of the signal from the sensor occurs; a switch for turning ON/OFF an input of the signal to the disconnection detecting section; and a disconnection-detection diagnosis section for operating the switch to diagnose whether or not the disconnection detecting section functions normally. Further, a car is stopped when occurrence of the disconnection is determined by the signal diagnosis device or when an abnormality is detected by the disconnection-detection diagnosis section.