초록 ▼

An exemplary embodiment of the invention is directed to an elevator braking system including an accelerometer for detecting acceleration of an elevator car and generating an acceleration signal. An over-acceleration detection module compares the acceleration signal to an acceleration threshold. If o

An exemplary embodiment of the invention is directed to an elevator braking system including an accelerometer for detecting acceleration of an elevator car and generating an acceleration signal. An over-acceleration detection module compares the acceleration signal to an acceleration threshold. If over-acceleration detection module detects an over-acceleration condition, a first switching device disrupts power to a solenoid in order to activate a braking assembly.

대표청구항 ▼

[ What is claimed is:] [1.] A controller providing an output signal to a braking assembly in an elevator braking system, the controller comprising:an accelerometer detecting acceleration of an elevator car and generating an acceleration signal;an over-acceleration detection module comparing the acce

[ What is claimed is:] [1.] A controller providing an output signal to a braking assembly in an elevator braking system, the controller comprising:an accelerometer detecting acceleration of an elevator car and generating an acceleration signal;an over-acceleration detection module comparing the acceleration signal to an acceleration threshold and generating an over-acceleration signal;a first switching device interrupting said output signal in response to said over-acceleration signal;an integration module for receiving said acceleration signal and generating a velocity signal;an over-speed detection module for comparing the velocity signal a velocity threshold and generating an over-speed signal; anda second switching device for interrupting said output signal in response to said over-speed signal.