JPS6214054Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an earthquake control system for elevators.

It has been proposed to install an earthquake sensor in an elevator system or a building in which it is installed, and to control the elevator during an earthquake through the operation of the earthquake sensor. It is also being considered that earthquake control will display the occurrence of an earthquake inside the elevator car to urge passengers to prepare for evacuation.

On the other hand, in order to detect earthquakes at an early stage, earthquake sensors that operate with relatively small vibrations are usually provided. Such earthquake detectors are activated by vibrations caused by construction work near buildings or large vehicles passing by, so non-earthquake vibrations can cause elevators to be controlled during earthquakes, alerting the cars to the occurrence of an earthquake and preventing them from leaving the car. When the car is being raised or lowered, that is, when the car is in a closed room, there is a problem that gives passengers an unnecessary sense of anxiety.

This invention solves the above-mentioned drawbacks and aims to provide an earthquake control system for elevators in which the occurrence of an earthquake is not notified when the car is being raised or lowered even if the earthquake sensor is activated.

An embodiment of this invention will be described below with reference to figures.

In the figure, 1 is an earthquake sensor that is made up of a time-limited return contact and is activated by a predetermined vibration, and continues to operate as long as this vibration continues, and 2 is a stop command that stops the elevator car (not shown) at the nearest floor. Device, 3 is a switch that operates when the car stops, 4 is a switch that operates when the car stops.
AND gate, 5 is a door opening command device that issues a command to open the car door (not shown), 6 is a switch that operates when the car door is opened, 7 is AND
The gate 8 is a notification device provided in the car and, when activated, notifies at least the occurrence of an earthquake by text, voice, etc., such as "There is an earthquake. Please evacuate." 9 is a standby control device that makes the car wait with the lights on, the car door open, and the elevator call registered; 10 is a timer; 11 is a timer;
AND gate, 12 is a pause device that turns off the car, turns off the lights, closes the car door, cancels the registered elevator call, and pauses the car; 13 is an AND gate;
14 is a NOT gate, and 15 is a return control device that deenergizes the standby control device 9 and returns the elevator to a normal state.

If an earthquake occurs while the car is being raised or lowered, the earthquake sensor 1 is closed and the stop command device 2 is energized to generate an output. As a result, when the car stops, switch 3 is closed and AND gate 4 outputs an output. As a result, the door opening command device 5 is energized and the door of the car is opened. Along with this, the switch 6 is closed and the AND gate 7 outputs an output. As a result, the notification device 8 is energized to notify the inside of the car of an earthquake occurrence and an evacuation order. In this manner, when the earthquake sensor 1 is activated, the earthquake is reported after the car has stopped and the door has been opened, so that the earthquake is not notified inside the car, which is in a closed room, and no unnecessary anxiety is given to the passengers. Especially when the operating vibration of seismic sensor 1 is set to a small value, it may malfunction.
Although the frequency of excessive motion increases, the sense of anxiety given to passengers in such cases can be reduced.

Further, the standby control device 9 is energized by the output of the AND gate 7, and the car is put on standby with the car's light turned on, the door of the car open, and the already registered call as it is. at the same time
The timer 10 is energized by the output of the AND gate 7, and outputs an output when a predetermined time has elapsed, and if the earthquake sensor 1 is still closed at this time, that is, if the vibration due to the earthquake is continuing. Or, even if the vibration has stopped, if the return time of the earthquake sensor 1 is still within the limit, the AND gate 11 outputs an output and the pause device 1 is activated.
2 is energized, the car lights are turned off, the car door is closed, and the elevator is stopped with the registered elevator call canceled. Note that the energized pause device 12 is manually operated and deenergized. Furthermore, if the earthquake sensor 1 is open when the timer 10 outputs an output, the NOT gate 14
generates an output, the AND gate 13 generates an output, the return control device 15 is energized, and the elevator is returned to its normal state. At this time, since the elevator is in a standby state by the standby control device 9, operation can be resumed immediately without any extra effort, which is particularly convenient in the case of excessive operation of the earthquake sensor 1.

As explained above, this invention uses the operation of an earthquake sensor to stop the car at the nearest floor and open the door, and only after the door starts to open will notify the inside of the car that an earthquake has occurred. This prevents the occurrence of an earthquake from being notified early on inside the car while the car is being lifted or lowered, causing unnecessary anxiety to the passengers, and prevents excessive operation when an earthquake sensor is installed, which is designed to reduce vibrations. The present invention aims to realize an earthquake control system for elevators that can reduce the sense of anxiety given to passengers.

[Brief explanation of the drawing]

The figure is a principal logical circuit diagram showing an embodiment of an elevator earthquake control system according to this invention. 1...Earthquake sensor, 2...Stop command device, 4...
...AND gate, 5...Door opening command device, 7...
AND gate, 8...notification device.

Claims (1)

[Scope of Claim for Utility Model Registration] When an earthquake sensor detects a predetermined vibration, the elevator car is stopped at the nearest floor and the door is opened, and an alarm device is installed inside the elevator car to notify of an earthquake, a means for detecting that the car has stopped due to the operation of the earthquake sensor; and a means that responds to the output signal of the car stop detection means and the door opening signal of the car door, and only when both of these signals are input. An elevator earthquake control device comprising: means for outputting a signal for operating the above-mentioned notification device;