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

Active Publication Date: 2015-10-07
DRAKA ELEVATOR PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, accelerometers can give inaccurate readings and fail to function at all, which causes traditional seismic units to be ineffective in response to seismic events

Method used

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  • Seismic-detection sensor device for vertical transportation equipment
  • Seismic-detection sensor device for vertical transportation equipment

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Embodiment Construction

[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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Abstract

A seismic-detection sensor device includes two accelerometers having different sensitivities. The seismic-detection sensor device provides excellent precision and operability monitoring.

Description

technical field [0001] The present invention relates to vertical transportation safety systems, and more particularly to earthquake detection sensor devices for elevators and escalators. Background technique [0002] During earthquakes, buildings often suffer damage from ground acceleration or subsequent fires and explosions due to leaking gas (ie, from ruptured gas lines). Older buildings are particularly susceptible to structural damage caused by ground accelerations, and seismic sensors are sometimes used to improve the safety of vertical transport equipment (VTE) such as elevators in use in these vulnerable buildings sex. These seismic sensors are expected to detect seismic accelerations that exceed safety guidelines and then safely shut down the VTE. [0003] In conventional seismic units, accelerometers typically provide output data (eg, voltage) that the microcontroller of the seismic unit uses to determine appropriate action in response to a seismic event. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02B66B29/00G01P15/00
CPCG01V1/28B66B5/022G01V1/16G08B21/10B66B5/0031B66B29/005G01P15/003
Inventor R·S·史密斯
Owner DRAKA ELEVATOR PRODS
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