Safety monitoring device for use in active seismic response and wind control system
First Claim
1. In a seismic induced vibration and/or wind control system for protecting a structure including first sensor means to detect seismic tremor and/or wind induced movement of a building and to produce a first signal responsive to said movement, building movement attenuation means;
- actuator means to actuate said building movement attenuation means;
power means to energize said actuator;
second sensor means to detect actuation of said building movement attenuation means and to produce a second signal responsive to said actuation; and
computer control means adapted to receive and to process said first and second signals and to produce a third signal to control said actuator means, a safety system to prevent overload and/or malfunction of said vibration and/or wind control system comprising;
sensor means to detect the speed of movement of said building induced by seismic tremor and/or wind, and to produce a fourth signal responsive to said movement;
a seismic response control load meter adapted to detect the induced load on said actuator responsive to said third signal and to produce a fifth signal responsive to said load;
signal processing means adapted to receive said fourth and fifth signals and to determine whether said signals indicate movements of said building and said actuator within a predetermined range of values; and
said processing means being further adapted to de-energize said actuator if said movements exceed said predetermined range of values.
1 Assignment
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Accused Products
Abstract
A safety monitoring device is provided for the use in an active seismic response and wind control system for exerting a control force, which restrains the vibration of a structure due to disturbances such as earthquake and wind, from an actuator in response to the above vibration. The safety monitoring device measures the work done of a seismic response control force and judges the work done of the seismic response control force to be positive or negative, so that whether or not the seismic response control is properly carried out by the actuator is judged. If any abnormality is found, a stop signal or the like is generated to stop the seismic response and wind control system, whereby the safety of the structure is ensured.
24 Citations
5 Claims
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1. In a seismic induced vibration and/or wind control system for protecting a structure including first sensor means to detect seismic tremor and/or wind induced movement of a building and to produce a first signal responsive to said movement, building movement attenuation means;
- actuator means to actuate said building movement attenuation means;
power means to energize said actuator;
second sensor means to detect actuation of said building movement attenuation means and to produce a second signal responsive to said actuation; and
computer control means adapted to receive and to process said first and second signals and to produce a third signal to control said actuator means, a safety system to prevent overload and/or malfunction of said vibration and/or wind control system comprising;
sensor means to detect the speed of movement of said building induced by seismic tremor and/or wind, and to produce a fourth signal responsive to said movement;
a seismic response control load meter adapted to detect the induced load on said actuator responsive to said third signal and to produce a fifth signal responsive to said load;
signal processing means adapted to receive said fourth and fifth signals and to determine whether said signals indicate movements of said building and said actuator within a predetermined range of values; and
said processing means being further adapted to de-energize said actuator if said movements exceed said predetermined range of values. - View Dependent Claims (2, 3, 4, 5)
- actuator means to actuate said building movement attenuation means;
Specification