Seismic-detection sensor device for vertical transportation equipment
A detection sensor and auxiliary sensor technology, applied in the field of vertical transportation safety system, can solve the problems of inaccurate readings of accelerometers, inability to work, etc., to achieve the effect of easy adaptation, prevention of false alarms, and promotion of monitoring
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[0023] The present invention includes an earthquake detection sensor arrangement designed for vertical transportation equipment (eg, elevator) control applications. The device is sensitive to motion from seismic events. Where accelerations from a seismic event exceed safe recommended levels such as those specified in ASME A17.1 and ASCE 25-97, an alarm is triggered and a signal is sent to the elevator to safely close and allow passengers to exit.
[0024] figure 1 A block diagram of the sensor system is shown. An earthquake detection sensor has four main subsystems of (i) sensor subsystem, (ii) processing subsystem, (iii) interface subsystem, and (iv) power subsystem.
[0025] The sensor subsystem uses transducers that convert accelerations induced by seismic motion into three analog voltage signals. These three acceleration-related signals represent the vector components of the direction of acceleration (ie, the acceleration expressed in the x, y, and z coordinate system o...
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