Patent ID: 9108823
Filing Date: 2015-08-18
Classification: B66B

Abstract:
1. An elevator safety control device controlling stop of a car, comprising: an input unit receiving a signal on a state of an elevator as an input value; a logic unit including a CPU (Central Processing Unit) performing computation on safety control of said elevator by executing computation on a plurality of safety control functions by independent programs by using said input value, and a memory; and an independence assurance unit assuring independence of said safety control functions so that said safety control functions do not exert influence on one another, wherein said independence assurance unit assures independence of each of said safety control functions by monitoring whether or not said safety control functions access said memory other than a permitted region, and when said independence assurance unit detects an access to said memory other than the permitted region by a predetermined one of said safety control functions, said elevator safety control device stops said car.