Elevator safety supervision entity with two units with options such as autonomous evacuation of passengers

Abstract

An elevator safety supervisory entity (SSE) is proposed (33). The elevator safety supervision entity includes: a car safety supervision unit (SSU) (35), which controls the function of the car safety components (30, 31) and includes a at least one car sensor (17, 19, 21); a top safety supervision unit (37) that controls the function of the shaft safety components (14, 16) and includes a sensor for sensing shaft related parameters at least one shaft sensor (23, 25); and a data connection (38) for transmitting signal data between the car safety supervision unit (35) and the top safety supervision unit (37). Both the car safety supervision unit (35) and the top safety supervision unit (37) are adapted to detect a fault in the other of the car safety supervision unit (35) and the top safety supervision unit (37) and to detect a failure via the data connection (38) Failure of ongoing signal data transmission and switching from the normal mode of operation to the failure mode of operation upon detection of such failure. In the failure mode of operation, the car safety supervision unit (35) and the top safety supervision unit (37) are adapted to operate autonomously, the car safety supervision unit (35) is adapted to control the functions of the car safety components (30, 31) based on information obtained from shaft-related parameters sensed by said shaft sensors (23, 25) of the top safety supervision unit (37) , and the top safety supervision unit (37) is adapted to be based on information obtained from sensed shaft-related parameters rather than from the car sensors (17, 19, 21) Information derived from sensed parameters related to the car, controlling at least the function of the shaft safety components (14, 16). Thus, even when the function of the elevator safety supervision entity (33) is disrupted due to a fault, the elevator (1) can at least temporarily remain in operation with a sufficiently high level of safety, and for example, passengers can exit from the elevator before the operation of the elevator is completely stopped. Car (3) withdraws.

Description

technical field [0001] The present invention relates to an elevator safety supervision entity (SSE) comprising two separate safety supervision units (SSU) for supervising safety-related conditions and controlling safety-related functions in an elevator. Background technique [0002] Elevators are used to transport passengers or items between different floors within a building. For this purpose, the elevator car (sometimes called the elevator car) is displaced throughout the elevator shaft (sometimes called the hoistway). The elevator car is driven by a drive motor, and the movement of the drive motor is controlled by the elevator controller. [0003] Strict safety and security requirements must be met when the elevator car is displaced at great heights. Thus, safety-related conditions within an elevator are often supervised or monitored by specific devices that, in the event of detection of a safety-critical condition, can instruct the elevator controller or can override n...

AI Technical Summary

Problems solved by technology

[0010] However, it has been found that a routine reaction to any failure within the components of the safety oversight entity may cause inconvenience or even danger to passengers in the elevator car

In particular, evacuation of passengers from elevator cars can be troublesome

Images