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US 12,759,842 B2Granted
Verifying configuration parameter changes in an elevator safety system
AssigneeOtis Elevator Company
InventorPeter Herkel
Life of this patent
Estimating the term…
Abstract
A method of verifying configuration parameter changes in an elevator safety system includes detecting (100) a change in one or more of the configuration parameters stored in the memory; putting (102) the elevator system into an out-of-service mode; carrying out (104) a functional test of the elevator safety system to verify an appropriate safety action; and then putting (108) the elevator system back into an in-service mode.
Claims14
A method of verifying configuration parameter changes in an elevator safety system (53), the elevator safety system (53) comprising:
- one or more safety nodes (42a-d, 44, 46, 48a-b), each arranged to monitor an input received from an associated safety sensor in an elevator system (20);
- a memory storing configuration parameters and a processor (52) with access to the memory;
- the processor (52) being arranged to access a stored configuration parameter of relevance to an input received at a safety node (42a-d, 44, 46, 48a-b) and to evaluate the input with reference to the configuration parameter;
- and the processor (52) being arranged to output an actuation signal (60,62) for one or more safety actions based on the evaluation of the input;
- the method comprising:
- putting the elevator system (20) into an out-of-service mode in response to detecting a change in one or more of the configuration parameters stored in the memory;
- in the out-of-service mode, carrying out a functional test of the elevator safety system (53) by moving an empty elevator car (22) under predetermined conditions and verifying that the processor (52) outputs an actuation signal (60,62) for an appropriate safety action under these predetermined conditions;
- and
- then putting the elevator system (20) back into an in-service mode.
6 more elements
An elevator system (20) comprising:
- an elevator car (22) moving along a hoistway (34);
- an elevator controller (40), configured to control operation of the elevator car (22);
- and
- an elevator safety system (53) comprising:
- one or more safety nodes (42a-d, 44, 46, 48a-b), each arranged to monitor an input received from an associated safety sensor in the elevator system (20);
- a memory storing configuration parameters and a processor (52) with access to the memory;
- the processor (52) being arranged to access a stored configuration parameter of relevance to an input received at a safety node (42a-d, 44, 46, 48a-b) and to evaluate the input with reference to the configuration parameter;
- and the processor (52) being arranged to output an actuation signal (60,62) for one or more safety actions based on the evaluation of the input;
- wherein, during a process of verifying configuration parameter changes in the elevator safety system (53):
- the elevator controller (40) is configured to put the elevator system (20) into an out-of-service mode in response to detecting a change in one or more of the configuration parameters stored in the memory;
- in the out-of-service mode, the elevator controller (40) is configured to carry out a functional test of the elevator safety system (53) by moving an empty elevator car (22) under predetermined conditions and verifying that the processor (52) outputs an actuation signal (60,62) for an appropriate safety action under these predetermined conditions;
- and
- the elevator controller (40) or the elevator safety system (53) is then configured to put the elevator system back into an in-service mode.
10 more elements
Dependencies are inferred from the claim text.