Control device for elevator

Abstract

PROBLEM TO BE SOLVED: To provide an elevator controller where an abnormal place in landing accuracy can be observed at a glance without adding any special instrument when inspecting the elevator. SOLUTION: The elevator controller including a position detection sensor 80 mounted on a passenger car 1 and detected bodies 81 to 83 detected by the position detection sensor disposed in an elevating path and detecting a position of the passenger car, wherein the position detecting sensor has four sensor units 80A to 80D that are interposed and mounted in the passenger car, the detected bodies have each a plurality of detected units 81a to 81d, 82a, 82d, and 83a to 83d that are simultaneously detected by at least two sensor units out of the four sensor units interposed beneath the passenger car and detect any abnormalities in response to the deviations of output timings in at least the two sensor units, is provided.

Description

technical field [0001] The present invention relates to an elevator in which the elevator car is lifted and lowered in the hoistway, in particular to an elevator that can accurately grasp the location where the landing accuracy of the floor is abnormal when the elevator car is about to stop at a predetermined landing floor Control devices for elevators. Background technique [0002] In the prior art, when the elevator moves up and down in the elevator passage, it is necessary to detect the position of the elevator car in the elevator passage. In addition, in order to prevent cost increase and reliability decrease, and in order to improve floor landing accuracy, for example, using a plurality of position detection sensors installed on the side of the elevator car and a plurality of objects to be detected installed on the side of the elevator hall, in the elevator car When the position reaches the lifting position where the elevator door can be opened, the elevator door opena...

AI Technical Summary

Problems solved by technology

[0008] The prior art disclosed in Patent Document 1 is an abnormality judgment method that can only be applied to the car detection switch arranged at a position where the normal operation range can be set, and it cannot judge whether there are multiple positions installed in the hoistway. Is there any abnormality in the car detection switch

[0009] In addition, when it is desired to expand the application range of this method to judge the abnormality of multiple car detection switches, not only will the system structure become complicated, but also the labor required for maintenance work will increase.

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