JP2015013731A5 - - Google Patents

Claims (6)

A position of a car arranged in the hoistway is detected, a pulse generator attached to a governor, a floor detection detecting plate provided at a plurality of locations in the hoistway, and a car provided on the car In an elevator safety system comprising a car position sensor for detecting the floor detection plate, and a safety controller to which an output signal of the pulse generator and the car position sensor is input,
An end floor detection detection plate is provided in the vicinity of the upper end portion and the lower end portion of the hoistway, and an end floor detection device for detecting the end floor detection detection plate is provided in the car, and a detection signal of the end floor detection device is provided. Input to the safety controller, the safety controller has a measurement operation processing unit to which the output signal of the pulse generator, the detection signal of the car position sensor and the detection signal of the end floor detection device are input, The processing unit is configured to detect the position of the detection plate for the floor detection and the output signal of the pulse generator based on the detection signal of the end floor detector, the detection signal of the car position sensor, and the output signal of the pulse generator. The elevator safety system is characterized in that this positional relationship is stored in a table.   The safety controller includes a normal operation processing unit, and the normal operation processing unit receives a car speed detection processing unit that receives an output signal of the pulse generator and detects a car speed, an output signal of the pulse generator, and the Detection signals from the car position sensor are input, and the table in which the relationship between the position of the car detected from these input signals, the position of the detection plate for floor detection, and the output signal of the pulse generator is stored is referred to. The elevator safety system according to claim 1, further comprising a car position detection processing unit that compares and detects the obtained car position.   The measurement operation processing unit is provided with a predetermined speed excess detection processing unit to which the output signal of the pulse generator is input, and the safety controller is provided with an emergency stop processing unit, and the predetermined speed excess detection processing unit is provided with the car. 2. The elevator safety system according to claim 1, wherein an emergency stop command is issued when it is detected that a predetermined speed is exceeded.   The normal operation processing unit of the safety controller is arranged at the car position from the car position detected by the car position detection processing unit during normal operation of the elevator and the car speed detected by the car speed detection processing unit. A terminal floor forced deceleration speed excess detection processing unit that monitors whether the car exceeds a predetermined speed according to the vehicle, and the terminal floor forced deceleration speed excess detection processing unit detects the car when the car exceeds the predetermined speed. The elevator safety system according to claim 2, wherein a command for emergency stop is generated. The measurement operation processing unit determines an output of the pulse generator when the end floor detection device detects the end floor detection plate as a vertical reference position in a hoistway, and the car position sensor is the floor. a plurality of said floor for detecting the difference of the output of the pulse generator when the end floor detection device and the output of the pulse generator upon detection of the detected detection plate detects the end floor detecting detection plate The elevator safety system according to any one of claims 1 to 4, wherein the position of the detection plate is determined.   6. The elevator safety system according to claim 5, wherein the safety controller is provided independently of an elevator controller that controls the operation of the elevator car.