JP2008037566A - Control operation system of elevator in earthquake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately perform the control operation in an earthquake even if an occurring earthquake has a possibility of causing a long-cycle earthquake vibration. <P>SOLUTION: The real time earthquake information to be output from a real time earthquake information supply source 2 onto the Internet 1 contains earthquake occurrence time (time point of detecting a P-wave), place of the hypocenter, a magnitude value and depth of the hypocenter. A control operation command means 3 estimates the arrival time of the S-wave and seismic intensity of that time based on the real time earthquake information, and determines whether the earthquake control operation is to be done or not. However, in case wherein a long-cycle earthquake occurrence predicting means 5 predicts that a building A is to be hit by a long-cycle earthquake, priority is given to a result of the prediction, and even if a result of determination by oneself is that the control operation in an earthquake is unnecessary, the control operation command in an earthquake is output to operation control means 4A, 4B, ..., 4N. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator seismic control operation system.

  Many modern elevator systems are equipped with a seismic control operation function. When an earthquake occurs, the car is automatically stopped at the nearest floor based on the control operation function so that passengers can escape from the car. To prevent the occurrence of confinement accidents.

  The seismic control operation is normally started when an earthquake detector installed in a building detects a shake (acceleration) of a certain level or more to detect an earthquake (for example, Patent Document 1). In this method (hereinafter referred to as the first method), since the time from the time when the earthquake is detected until the time when the next large shake occurs, the seismic control operation may not be in time.

Therefore, recently, seismic waves propagating from the epicenter to the ground at the time of the earthquake are classified as longitudinal waves of fast initial tremors called P waves and transverse waves of slow main motions called S waves. Focusing on the above, a method to quickly acquire P wave generation information from a real-time earthquake information supply source via a network and execute an earthquake control operation until the S wave reaches the building (hereinafter referred to as the second method) ) Has also been proposed (see, for example, Patent Document 2).
JP-A-8-301544 JP 2004-224469 A

  However, in the first method, the seismic control operation is not performed unless the seismic detector detects a shake of a certain level or more, and in the second method, the seismic intensity at the time of arrival of the S wave at the P wave detection time is a constant level. Seismic control operation will not be performed if it is predicted that

  On the other hand, in recent years, the ground motion called long-period ground motion has attracted attention. Normally, ground motions that cause significant damage to buildings have a short period of about 0.5 seconds to 2 seconds, but the period of long-period ground motions is as long as several seconds to several tens of seconds. And because of the length of the vibration period, long-period ground motion tends to resonate with a huge building with a large natural frequency, such as a skyscraper, and has the property of continuing a large shaking slowly for a long time. The Tokachi-oki earthquake that occurred in 2003 is an example of this long-period ground motion earthquake. At this time, two long-period tremors caused a fire in two oil tanks in Tomakomai.

  When an earthquake that causes such long-period ground motion occurs, it is not detected as an earthquake occurrence in either of the first method and the second method, and seismic control operation is not easily performed. The risk of confinement accidents increases. In fact, the Niigata Chuetsu Earthquake in 2004 caused long-period ground motion in Roppongi Hills Building in Minato-ku, Tokyo, more than 200 km away from the epicenter, resulting in significant damage to the elevator equipment and a passenger confinement accident. ing.

  The present invention has been made in view of the above circumstances, and even if an earthquake that has occurred may cause long-period ground motion, an earthquake seismic control operation system for an elevator capable of accurately performing seismic control operation. The purpose is to provide.

  As means for solving the above-mentioned problems, the invention according to claim 1 is connected to a network, and is connected to the network, and a real-time earthquake information supply source that outputs real-time earthquake information on the network when an earthquake occurs at the epicenter. A long-period ground motion generation prediction means for predicting whether or not long-period ground motion is generated in a building where an elevator is installed based on real-time earthquake information input from the real-time earthquake information supply source, and the long-period ground motion prediction When the generating means predicts the occurrence of long-period ground motion, the earthquake reaches the building based on the control operation command means for commanding execution of seismic control operation and the seismic control operation command from the control operation command means And an operation control means for executing control for seismic control operation before or near the arrival time.

  According to a second aspect of the present invention, in the first aspect of the invention, the long-period ground motion occurrence prediction means predicts the occurrence of the long-period ground motion based on magnitude information and source depth information included in the real-time earthquake information. It is characterized by being.

  According to a third aspect of the present invention, in the first aspect of the present invention, the real-time earthquake information from the real-time earthquake information supply source includes earthquake waveform data, and the long-period earthquake motion occurrence prediction means performs frequency analysis. When the long-period ground motion component is detected from the seismic waveform data, the generation of the long-period ground motion is predicted.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the long-period ground motion occurrence prediction means is provided in a monitoring device of an elevator monitoring center connected to the network. The prediction is performed only when the ground of the building where the target elevator is installed is a sedimentary layer.

  According to the present invention, since the possibility of occurrence of long-period ground motion is predicted based on real-time earthquake information, even if the generated earthquake may cause long-period ground motion, the seismic control operation can be performed accurately. Can be done.

  FIG. 1 is a configuration diagram of an elevator seismic control operation system according to a first embodiment of the present invention. In this figure, a real-time earthquake information supply source 2 is connected to the Internet 1. In the present embodiment, the real-time earthquake information supply source 2 is assumed to be a server owned by a specified non-profit corporation “Real-time earthquake information utilization council”.

  The Real-time Earthquake Information Utilization Council uses an earthquake observation network that connects earthquake observation points all over Japan. When an earthquake occurs at a certain location, the earthquake information is immediately released in real time, It is intended to ensure the safety of residents' lives and reduce damage to the socio-economy by enabling disaster prevention measures to take place before a large earthquake shakes away from the ground.

  The real-time earthquake information supply source 2 outputs real-time earthquake information on the Internet 1 when any earthquake observation point in the above-mentioned earthquake observation network detects a P wave. This real-time earthquake information includes the earthquake occurrence time (P wave detection time), the location of the epicenter, the magnitude value, the epicenter depth, and the like.

  On the other hand, the building A in which the elevator system is constructed includes a control operation command means 3, operation control means 4A, 4B,..., 4N for controlling operation for each of the N elevators, and long-period ground motion generation prediction means 5 The control operation command means 3 and the long-period ground motion occurrence prediction means 5 are connected to the Internet 1.

  When the real-time earthquake information is input from the real-time earthquake information supply source 2 via the Internet 1, the control operation command means 3 predicts the arrival time of the S wave and the seismic intensity at that time (that is, the shaking of the building A). It is determined whether or not the seismic control operation should be performed by the same method as above, and when it is determined that the seismic control operation should be performed, the seismic control operation command is output to the operation control means 4A, 4B,. Yes. Thereby, each of the operation control means 4A, 4B,..., 4N controls the seismic control operation for its own elevator.

  And in this invention, the long period earthquake motion generation | occurrence | production prediction means 5 which was not in the conventional system is comprised. This long-period earthquake motion occurrence prediction means 5 inputs real-time earthquake information from the real-time earthquake information supply source 2 via the Internet 1, and when the S wave from the earthquake source reaches the building A, the long-period earthquake motion is generated in the building A. Whether or not to occur is predicted, and the prediction result is output to the control operation command means 3.

  When the control operation command means 3 inputs the prediction result that the long-period ground motion is generated from the long-period ground motion generation prediction means 5, the seismic intensity at the time of arrival of the S wave is low. Even if it is determined that it is not necessary to execute the operation, the prediction result of the long-period ground motion occurrence prediction means 5 is prioritized and the earthquake control operation command is output to the operation control means 4A, 4B,. It is like that.

  Here, the prediction method of the long-period ground motion occurrence prediction means 5 will be described. FIG. 2 is a characteristic diagram in which earthquakes in the past several years throughout Japan are classified according to the presence or absence of long-period ground motion components. According to this figure, earthquakes containing long-period ground motion components (circles) occurred mostly when the epicenter was relatively shallow with a depth of 50 km or less and the magnitude was about 5 or more. In other cases, it can be seen that the earthquake does not contain long-period ground motion components (Δ mark).

  Therefore, in the present embodiment, the region R shown in FIG. 2 is defined as a “long-period ground motion generation region”, and long-period ground motion is generated for earthquakes having seismic source depths and magnitude values included in the region R. The prediction means 5 outputs a prediction result that a long-period ground motion occurs to the control operation command means 3.

  However, although not shown in Fig. 2, according to past data, long-period ground motions actually occur in sedimentary layers with relatively soft ground (such as the Kanto Plain, Noo Plain, Osaka Plain, etc.). If the ground of the building is solid, such as a bedrock layer, the seismic depth and magnitude values that fall within the region R are as follows: However, no long-period ground motion occurred. Therefore, the configuration of FIG. 1 equipped with the long-period ground motion generation prediction means 5 is based on the premise that the ground of the building A is a sedimentary layer.

  Next, the operation of FIG. 1 will be described. For example, assume that the epicenter of the earthquake is X city in the Tohoku region, and the location of building A is Y city in the Kanto plain.

  When an earthquake occurs, the P wave from the epicenter propagates through the ground at a high speed. Then, among the observation points nationwide on the above-mentioned high-sensitivity seismic observation network, the observation point in X city closest to this epicenter first detects the P wave. The real-time earthquake information supply source 2 immediately sends the real-time earthquake information based on the P wave detection at the observation point in the city X to the Internet 1, and the control operation command means 3 and the long-period earthquake motion occurrence prediction means 5 receive the real-time earthquake information. input.

  The control operation command means 3 predicts the arrival time of the S wave and the seismic intensity at that time from the input real-time earthquake information, but determines that the seismic control operation is not necessary because the predicted seismic intensity is at a low level.

  On the other hand, the long-period ground motion generation prediction means 5 picks up the depth and magnitude values of the epicenter from the input real-time earthquake information, and determines whether these values are within the long-period ground motion generation region R shown in FIG. Determine. In this case, since these values are in the region R, the long-period ground motion generation prediction means 5 outputs a prediction result that the long-period ground motion is generated in the building A to the control operation command means 3.

  The control operation command means 3 itself determined that the seismic control operation is not necessary because the seismic intensity level of the S wave is low, but the prediction result from the long-period ground motion occurrence prediction means 5 is given priority. To do. That is, before the S wave reaches the building A, an earthquake control operation command is output to the operation control means 4A, 4B,. Thereby, each of the operation control means 4A, 4B,..., 4N controls the seismic control operation for its own elevator, and can lower the passengers in the car to the nearest floor. If the S-wave has already reached the building A at the time when the long-period ground motion generation prediction means 5 outputs the prediction result of the generation of long-period ground motion to the control operation command means 3, the control operation command means 3 immediately A control operation command is output to the operation control means 4A, 4B, ..., 4N.

  As described above, according to the configuration of FIG. 1, even if the control operation command means 3 determines that the earthquake control operation is not necessary based only on the seismic intensity information in the real-time earthquake information, the long-period earthquake motion occurrence prediction means 5 Based on the information on the seismic depth and magnitude in the real-time earthquake information, the prediction result about the occurrence of long-period ground motion is output to the control operation command means 3, so the seismic control operation for the earthquake that causes long-period ground motion is executed accurately. can do.

  In the above embodiment, the long-period ground motion occurrence prediction means 5 is configured to predict based on whether or not the hypocenter depth and magnitude values enter the long-period ground motion generation region R in FIG. If the seismic waveform data can be acquired from the real-time seismic information supply source 2 as real-time seismic information, the long-period seismic motion will be generated when the long-period seismic wave component is detected by the frequency analysis of the seismic waveform data. The prediction result may be output to the control operation command means 3.

  FIG. 3 is a configuration diagram of an elevator seismic control operation system according to the second embodiment of the present invention. In this embodiment, a plurality of buildings A1, A2 and A3 are connected to the Internet 1, and the elevator system of each building includes control operation command means 3 and operation control means 4A,. Further, the monitoring device 6 of the elevator monitoring center B is also connected to the Internet 1, and the long-period ground motion generation prediction means 5 provided on the building A side in the configuration of FIG. 1 is replaced with the monitoring device 6 in the configuration of FIG. On the side.

  The locations of buildings A1, A2 and A3 may extend over a wide area. In this case, the grounds of these buildings are not necessarily the same, and there may be a mixture of sedimentary layers and bedrock layers. In the present embodiment, the long-period ground motion generation prediction means 5 in the monitoring device 6 holds information about the ground of each building in advance, and the long-period earthquake motion only for the building elevator system built on the sedimentary layer. The earthquake motion occurrence prediction means 5 outputs a prediction result about the occurrence of long-period earthquake motion to the control operation command means 3 of each building.

  Next, the operation of FIG. 3 will be described. However, in the following example, it is assumed that the ground of buildings A1 and A2 is a sedimentary layer, and the ground of building A3 is a rock layer.

  As in the case of FIG. 1, the control operation command means 3 in the buildings A1, A2 and A3 is the same as the case of FIG. However, it is determined that there is no need for seismic control operation because the predicted seismic intensity was low.

  On the other hand, on the elevator monitoring center B side, the long-period ground motion occurrence prediction means 5 in the monitoring device 6 picks up the epicenter depth and magnitude values from the input real-time earthquake information, and these values are shown in FIG. It is determined whether or not it is within the seismic motion generation region R. In this case, since these values are in the region R, the long-period ground motion generation predicting means 5 generates long-period ground motion only for the control operation command means 3 of the buildings A1 and A2 built in the sedimentary layer. Output the prediction result to the effect.

  Each control operation command means 3 of the buildings A1 and A2 has determined that the seismic control operation is not necessary because the seismic intensity level of the S wave is low. The seismic control operation command is output to each of the operation control means 4A, 4B,..., 4N before the S wave reaches the buildings A1, A2. Thereby, each operation control means 4A, 4B,..., 4N of the buildings A1, A2 can control seismic control operation for their own elevators, and can drop passengers in the car to the nearest floor.

  On the other hand, in the building A3, the control operation command means 3 does not input the prediction result from the long-period ground motion occurrence prediction means 5, so that the operation control means 4A and 4B are in accordance with the initial determination that the earthquake control operation is unnecessary. , ..., 4N continues normal operation without performing seismic control operation.

  Thus, according to the configuration of FIG. 3, the monitoring device 6 that monitors the elevator systems of a plurality of buildings is provided with the long-period ground motion generation prediction means 5, so that the elevator monitoring center B is built on a different ground. It is possible to take appropriate long-period ground motion countermeasures for multiple buildings A1, A2, and A3 in a wide area.

  As described above, if the seismic waveform data can be acquired as real-time seismic information from the real-time seismic information supply source 2 in the future, the long-period seismic motion occurrence predicting means 5 performs frequency analysis of the seismic waveform data. Presence of occurrence of long-period ground motion can be predicted. In that case, since the long-period ground motion occurrence prediction means 5 must perform prediction in a short time, a certain level of high computing capacity is required. According to the configuration of FIG. Since the periodic earthquake motion occurrence prediction means 5 has only to be installed on the elevator monitoring center B side, it is a cost-effective system.

  In the configuration shown in FIG. 3, the control operation command means 3 is provided in the buildings A1, A2, and A3 in order to leave room for the seismic control operation considering the actual situation at the site. A configuration provided on the monitoring device 6 side can also be adopted for the command means 3. According to such a configuration, since only one control operation command means 3 and one long-period ground motion occurrence prediction means 5 need be provided as a whole system, a more economical system can be constructed.

The block diagram of the earthquake-controlled operation system of the elevator which concerns on the 1st Embodiment of this invention. A characteristic diagram that classifies earthquakes in the past several years across Japan according to the presence or absence of long-period ground motion components. The block diagram of the earthquake-controlled operation system of the elevator which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1: Internet 2: Real-time earthquake information supply source 3: Control operation command means 4A, 4B,..., 4N: Operation control means 5: Long-period earthquake motion occurrence prediction means 6: Monitoring devices A, A1, A2, A3: Building B: Elevator monitoring center

Claims (4)

A real-time earthquake information supply source connected to a network and outputting real-time earthquake information on the network when an earthquake occurs at the epicenter;
A long-period ground motion generation predicting means that is connected to the network and predicts whether or not long-period ground motion is generated in a building where an elevator is installed based on real-time earthquake information input from the real-time earthquake information supply source;
When the long-period ground motion prediction generation means predicts the occurrence of long-period ground motion, control operation command means for commanding execution of seismic control operation;
Based on the command of seismic control operation from the control operation command means, an operation control means for executing control on the seismic control operation before or near the arrival time of the earthquake,
A seismic control operation system for elevators. The long-period ground motion occurrence prediction means predicts the occurrence of the long-period ground motion based on magnitude information and source depth information included in the real-time earthquake information.
The elevator seismic control operation system according to claim 1. The real-time earthquake information from the real-time earthquake information supply source includes earthquake waveform data,
The long-period ground motion occurrence prediction means predicts the occurrence of the long-period ground motion when a long-period ground motion component is detected from the seismic waveform data based on frequency analysis.
The elevator seismic control operation system according to claim 1. The long-period earthquake motion occurrence prediction means is provided in a monitoring device of an elevator monitoring center connected to the network, and the prediction is performed only when the ground of the building where the elevator to be monitored is installed is a sedimentary layer. Is what you do,
The earthquake controlled operation system for an elevator according to any one of claims 1 to 3.

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