JP2009149432A - Earthquake control system for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the safety of a user by performing earthquake control operation by each elevator device 21 withstanding an earthquake before a main shock or an initial tremor reaches. <P>SOLUTION: A monitoring center 22 monitors real-time vibration data of an acceleration sensor of a seismic sensor 6 sent from each elevator device 21 all the time. When the vibration data exceeds a predetermined value, the monitoring center regards the vibration data as P waves (initial tremor), calculates earthquake data such as an earthquake source and an earthquake magnitude, and sends instruction for earthquake control operation with respect to each elevator device which is expected to withstand a main shock at a predetermined level or higher. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an earthquake control system for an elevator that promptly implements earthquake countermeasures for each elevator apparatus when an earthquake occurs.

  In recent years, an elevator installed in a building or the like is equipped with an earthquake detector, and when the earthquake detector detects a vibration of a predetermined level or higher, the elevator device automatically operates for earthquake countermeasures corresponding to the vibration level. Implemented.

  FIG. 13 is a schematic diagram showing a schematic configuration of an elevator apparatus in which an earthquake countermeasure function is incorporated. The hoisting machine 4 of the main rope 3 is installed near the upper end in the hoistway 1 provided in the building, and the elevator car 4 and the counterweight 5 are suspended on the main rope 3 via sheaves. . Therefore, the car 4 can be moved to an arbitrary floor in the hoistway by rotating the hoisting machine 4. In the pit in the hoistway 1, a P wave seismic detector 6 for detecting a P wave (Primary Wave) which is an initial tremor of an earthquake is installed. The vibration data is input to an earthquake control unit 9 provided in a control panel 8 formed by a computer that controls the overall operation of the elevator. Further, on the upper side of the hoistway 1, an S wave seismic detector 7 for detecting an S wave (Secondary Wave) indicating a main shake of the earthquake is installed, and vibration data detected by the S wave seismic sensor 7 is installed. Is also input to the earthquake controller 9.

  In the control panel 8 formed by a computer, in addition to the earthquake control unit 9, a main control unit 11 that controls the entire elevator device, a landing call registration device provided in an elevator hall on each floor during normal operation, A normal operation unit 11 is provided for moving the car 4 to a floor designated by the car call registration device provided in the car 4 and designated by the car call. Furthermore, a control operation unit 12 is provided. When the execution command is input from the main control unit 10, the control operation unit 12 executes the control operation instead of the normal operation. Further, a communication unit 15 for exchanging various information with the external monitoring center 14 via a communication line 19 such as a telephone network is provided in the control panel 8.

  And the earthquake control part 9 in the control panel 8 performs the earthquake monitoring process shown in FIG. The detection sensitivity of the P-wave earthquake sensor 6 is set higher than the detection sensitivity of the S-wave earthquake sensor 7. More specifically, the maximum detection sensitivity of the S-wave earthquake detector 7 is set to 200 Gal, and vibrations less than 200 Gal cannot be detected. On the other hand, the detection sensitivity range of the P-wave earthquake detector 6 is set to 50 Gal to 200 Gal, for example.

  When the P-wave earthquake sensor 6 or the S-wave earthquake sensor 7 detects an earthquake (step S1), if the detection level is higher than the “H” level such as 200 Gal (S2), for the main control unit 10, The operation of the elevator is stopped (S3). If the detection level is “L” level or higher, such as 100 Gal (S4), the control operation unit 12 is activated, the elevator car 4 is landed on the nearest floor (S5), and the car 4 is opened. Then, after the passengers in the car 4 are evacuated to the elevator hall on the corresponding floor, the operation is suspended (S7).

  If the detection level is lower than the “L” level (S4), the control operation unit 12 is activated, the elevator car 4 is landed on the nearest floor (S8), and the car 4 is opened. The passengers in the car 4 are evacuated to the elevator hall on the corresponding floor. The P-wave earthquake detector 6 that has detected the vibration (acceleration) below the “L” level is reset (S9), the operation mode is switched to normal operation, and the elevator is restarted (S10).

Thus, by detecting the P wave which is the initial tremor of the earthquake by the P wave seismic detector 6, the control operation for the earthquake can be performed before the S wave which is the main shock of the earthquake arrives (Patent Document 1). .
JP 2002-46953 A

  However, in the earthquake countermeasure methods shown in FIGS. 13 and 14, of course, in the elevator apparatus in which the P-wave earthquake sensor 6 or the S-wave earthquake sensor 7 is not installed, earthquake countermeasures such as earthquake control operation are implemented. Can not.

  In addition, even if the P wave, which is the initial tremor of the earthquake, is detected by the P wave seismic detector 6, if the grace time from the P wave detection time until the main shock of the S wave earthquake arrives is short, It is possible that the mainshock will arrive. Therefore, there remains a concern that the user is trapped in the car 4. Furthermore, since the vibration level of the P wave, which is the initial tremor of the earthquake detected by the P wave seismic detector 6, is very low, there is a possibility that the vibration during normal operation is mistaken for the initial tremor of the earthquake and the earthquake countermeasure is executed. is there.

  Recently, it is conceivable to use the severe earthquake bulletin distributed by the Japan Meteorological Agency as the start timing of seismic control operation in the elevator system. This severe earthquake bulletin is used to prevent social unrest, for example, It is distributed only when a huge earthquake with a seismic intensity of “5” or higher occurs. Therefore, in the elevator apparatus, the earthquake early warning may not be delivered in the scale of the earthquake required for preventing the confinement accident.

  The present invention has been made in view of such circumstances, and in the distance from the epicenter, by instructing the elevator apparatus to control the earthquake before the main shock or initial tremor arrives, The purpose of the present invention is to provide an elevator seismic control system that avoids confinement accidents as much as possible, reduces damage to elevator equipment due to earthquakes, improves service to users, and improves the reliability of each elevator system. .

In order to solve the above-described problems, the present invention provides a plurality of elevator apparatuses in which seismic detectors incorporating acceleration sensors are incorporated and widely distributed, and are connected to the plurality of elevator apparatuses via communication lines. In an elevator seismic control system equipped with a monitoring center,
For each elevator, vibration data transmission means for transmitting vibration data detected by the acceleration sensor of the earthquake detector to the monitoring center in real time via the communication line, and control of the earthquake from the monitoring center via the communication line. Control operation executing means for executing the control operation when an operation execution command is received is added.

  The monitoring center receives average level storage means for storing the average level of vibration data detected by the acceleration sensor during normal operation of each elevator apparatus, and is received from each elevator apparatus in real time within a predetermined time. When the vibration level of a plurality of vibration data exceeds the average level, an earthquake data calculation means for calculating an earthquake data based on each vibration data, and calculating the earthquake data of the earthquake source and magnitude, and the earthquake Based on the earthquake data calculated by the data calculation means, determination means for determining an elevator device that is predicted to generate vibrations of a predetermined level or more, and a control operation execution command is transmitted to the determined elevator device via a communication line Execution command transmission means for adding.

  In the elevator seismic control system configured as described above, in a plurality of elevator devices distributed in a wide range, as operation modes, a normal operation mode in an ordinary state not during an earthquake or adjustment, and a control operation in the event of an earthquake occur. There is a mode. In the monitoring center, an average level of vibration data detected by the acceleration sensor during normal operation of each elevator apparatus is stored and held. Then, when the vibration level of a plurality of vibration data received in real time from each elevator device exceeds the average level within a certain time, an earthquake occurs based on each vibration data, the epicenter of the earthquake and the earthquake Earthquake data with the scale is calculated.

  Thus, since the presence or absence of the occurrence of the earthquake is determined by comparison with the average during normal operation, the presence or absence of the occurrence of the earthquake can be determined with high accuracy even when the level of the real-time vibration data is small.

  This is because the propagation speed of the P wave is nearly twice as fast as the propagation speed of the S wave, and the propagation speed of the electrical signal connecting each elevator apparatus and the monitoring center is compared with the propagation speed of the P wave and the S wave. It is possible to make use of the fact that it is extremely high. In this case, the calculation of the epicenter and the magnitude of the earthquake is required within the period in which the seismic wave of the earthquake is propagated through a part of a wide area, and is calculated using the first few vibration data.

  Next, the seismogenic area and the magnitude of the earthquake in a wide area are predicted from the calculated earthquake source and the earthquake data. Then, an elevator apparatus at a position where it is predicted that vibration of a predetermined level or higher will be determined is determined, and a control operation execution command is transmitted to the determined elevator apparatus.

  Therefore, in the elevator apparatus located at a certain distance from the epicenter, it is possible to carry out government operation with respect to the earthquake with a margin before the P wave and S wave arrive.

  As a result, it is possible to avoid the confinement accident in the passenger car as much as possible and to reduce the damage to the elevator equipment due to the earthquake.

  In another invention, in the elevator earthquake control system of the above invention, the earthquake data calculating means calculates earthquake data based on each vibration data, including the occurrence of the earthquake, the epicenter of the earthquake, the time of occurrence, and the magnitude of the earthquake. . Further, the execution command transmission means transmits the earthquake occurrence time together with the control operation execution command. Then, the control operation execution means calculates a grace time until the earthquake reaches the elevator apparatus from the earthquake occurrence time, and changes the control operation content according to the grace time.

  That is, according to the grace time until the earthquake reaches the elevator apparatus, the operation content that allows the passenger in the car to evacuate most safely at the present time is selected.

  In another aspect of the earthquake control system, the frequency average level storage for storing the average level of the frequency data obtained by frequency-converting the vibration data detected by the acceleration sensor during normal operation for each elevator apparatus in the monitoring center. And when a vibration level obtained by frequency conversion of a plurality of vibration data received in real time from each elevator apparatus within a predetermined time exceeds a frequency average level by an earthquake occurrence based on each vibration data, Seismic data calculation means for calculating earthquake data of the earthquake source and magnitude, and determination means for determining an elevator device that is predicted to generate a vibration of a predetermined level or more based on the earthquake data calculated by the earthquake data calculation means And an execution command transmitter that transmits a control operation execution command to the determined elevator apparatus via a communication line. With the door.

  In the elevator seismic control system configured as described above, the frequency characteristics of earthquake vibration and the frequency characteristics of vibration during normal operation of the elevator are greatly different. Therefore, even if the entire level of the real-time vibration data is close to the vibration level during normal operation, the vibration data due to the earthquake can be reliably determined.

  In another aspect of the elevator earthquake control system of the invention, the frequency data statistics obtained by frequency-converting vibration data detected by an acceleration sensor during normal operation of each elevator device to the monitoring center. Normal operation data storage means for storing values, real-time data storage means for storing statistical values of frequency data obtained by frequency conversion of vibration data sequentially received from each elevator device in real time, and using each statistical value The first Mahalanobis distance for normal operation vibration data and the second Mahalanobis distance for real-time vibration data of vibration data sequentially received in real time are calculated, and the occurrence of an earthquake is determined based on each calculated Mahalanobis distance. And the earthquake data that has been determined to be An earthquake data calculation means for calculating the earthquake data of the earthquake source and magnitude based on the earthquake, and an elevator apparatus that is predicted to generate a vibration of a predetermined level or more based on the earthquake data calculated by the earthquake data calculation means. Determination means for determining, and execution command transmitting means for transmitting an execution command for control operation to the determined elevator apparatus via a communication line.

In the earthquake control system of the elaborator thus configured, the first Mahalanobis distance D ₁ ^{2 of} the newly input vibration data with respect to the vibration data during normal operation and the real time of the newly input vibration data are also shown. The second Mahalanobis distance D ₂ ² for the vibration data is obtained. The Mahalanobis distance statistically indicates the distance between the evaluation target value and the center of gravity (average value) of the population. If there is large variation in the population, the evaluation target value and the center of gravity of the population (average value) ), The Mahalanobis distance is small. Therefore, by comparing the Mahalanobis distance, real-time vibration data resulting from an earthquake different from vibration data during normal operation can be specified. Therefore, the detection accuracy of the occurrence of earthquake can be improved.

  According to another invention, in the earthquake seismic control system for an elevator according to each of the inventions described above, when the monitoring center determines occurrence of an earthquake based on vibration data from an elevator apparatus arranged in a certain area, the monitoring center is arranged in an adjacent area. And determining cancellation means for canceling the determination of the occurrence of the earthquake when the occurrence of the earthquake is not determined based on the vibration data from the elevator apparatus. By taking such means, it is possible to improve the accuracy of the previous earthquake occurrence detection.

  In the present invention, the occurrence of an earthquake, the epicenter and the scale are detected using real-time vibration data from each elevator device distributed widely in the monitoring center, and before the main shock or initial tremor arrives far away from the epicenter. By instructing the elevator device to control the earthquake, it is possible to avoid a confinement accident in the car of the user as much as possible and to reduce the damage to the elevator equipment due to the earthquake.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic configuration diagram of an elevator earthquake control system according to a first embodiment of the present invention. For example, a plurality of elevator apparatuses 21 distributed in a wide area such as a prefecture unit are connected to one monitoring center 22 via a communication line 13 such as a public telephone line network.

  FIG. 2 is a block diagram showing a schematic configuration of each elevator apparatus 21. The same parts as those of the conventional elevator apparatus shown in FIG. 13 are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted.

  A hoisting machine 4 for the main rope 3 is installed in the vicinity of the upper end in the hoistway 1, and an elevator car 4 and a counterweight 5 are suspended on the main rope 3 via sheaves. In the pit in the hoistway 1, a P-wave earthquake detector 6 for detecting a P-wave that is an initial tremor of an earthquake is installed, and is detected by an acceleration sensor in the P-wave earthquake detector 6. The vibration data is sent to a main control unit 24, a normal operation data transmission unit 25, and a real time data transmission unit 26 provided in a control panel 23 formed by a computer that controls the overall operation of the elevator. Further, an S-wave earthquake detector 7 for detecting an S-wave indicating the main shake of the earthquake is installed on the upper side of the hoistway 1, and vibration data detected by the S-wave earthquake detector 7 is the main control unit. 24.

  In the control panel 8, in addition to the main control unit 24, the normal operation data transmission unit 25, and the real time data transmission unit 26, a hall call registration device 27 provided in an elevator hall on each floor and a car 4 are provided. There is provided a normal operation unit 11 for moving the car 4 to the floor designated by the hall call and car call input from the car call registration device 28. Further, a control operation unit 12 is provided in the control panel 8. When an execution command is input from the main control unit 24, the control operation unit 12 executes the control operation instead of the normal operation. Further, a communication unit 15 connected to the external monitoring center 21 via the communication line 13 is provided in the control panel 23.

  The main control unit 24 urgently stops the elevator car 4 when an S wave (main swing) exceeding, for example, 200 Gal is input from the S wave earthquake detector 7.

  The normal operation data transmission unit 25 is a communication unit that transmits vibration data detected by an acceleration sensor in the P-wave earthquake detector 6 when the elevator is in normal operation based on an instruction from the main control unit 24 by an operator's operation. 15. Transmit to the monitoring center 22 via the communication line 13.

  The real-time data transmission unit 26 transmits vibration data detected by the acceleration sensor in the P-wave earthquake detector 6 to the monitoring center 22 via the communication unit 15 and the communication line 13 in real time. That is, the monitoring center 22 is always connected to each elevator apparatus 21.

  In the elevator apparatus 21 configured as described above, as shown in FIG. 3, the main control unit 24 receives a normal operation data transmission instruction in response to an operator's instruction (step Q1). Then, the elevator drives the normal operation data transmission unit 25 for a predetermined time in the normal operation period, and transmits the vibration data output from the P-wave earthquake detector 6 to the monitoring center 22 as normal operation data (Q2). In other periods when no instruction is issued, the real-time data transmission unit 26 is driven to transmit the vibration data output from the P-wave earthquake detector 6 to the monitoring center 22 as real-time data (Q3 ).

  Further, when an instruction for executing the control operation is input from the monitoring center 22 as an interrupt, the main control unit 24 causes the control operation unit 12 to execute the control operation interrupt process shown in FIG. That is, the operation mode is switched to the control operation mode (step U1), the car 4 is landed on the nearest floor (U2), the door is opened (U3), and the elevator is stopped (U4).

  FIG. 5 is a schematic configuration diagram of the monitoring center 22 composed of a kind of computer. Normal operation data transmitted from each elevator device 21 via the communication line 13 is received by the normal operation data receiving unit 30 via the communication unit 29 and input to the update unit 31. In the normal operation vibration level storage unit 32, for example, an average level of vibration data for a predetermined time during normal operation is stored. The updating unit 31 updates this average level with vibration data for a predetermined time during normal operation received this time. Therefore, the average level stored in the normal operation vibration level storage unit 32 is the average level of vibration during normal operation of all the elevator apparatuses 12.

  Real time data transmitted from each elevator device 21 via the communication line 13 is received by the real time data receiving unit 33 via the communication unit 29 and sent to the earthquake occurrence determination unit 34. The earthquake occurrence determination unit 34 determines that an earthquake has occurred when the vibration level of the real-time data transmitted from each elevator device 21 in real time is equal to or greater than a predetermined amount, and determines the earthquake source and scale. The determination unit 35 is activated.

  When the vibration data from the plurality of elevator devices 21 indicates the occurrence of an earthquake, the earthquake source / scale determination unit 35 calculates the earthquake source and the earthquake magnitude of the corresponding earthquake from the plurality of vibration data. Specifically, since vibration data is detected sequentially from the P-wave seismic detector 6 of the elevator apparatus 21 close to the epicenter, each detection time difference from the head position at the installation position of each of the second and subsequent elevator apparatuses 21 is analyzed. Then, obtain the earthquake source and the earthquake data. The calculation of the epicenter and magnitude of this earthquake is based on the first few pieces of vibration data because the seismic waves of this earthquake need to be partially transmitted within a wide period.

  Next, the target elevator apparatus specifying unit 36 predicts the seismogenic area and the earthquake scale in a wide area from the calculated earthquake source and magnitude. And each elevator apparatus 21 of the position estimated that the vibration more than the regulation level of 100 Gal mentioned above will arise based on this earthquake prediction result is specified. The control operation instruction transmission unit 22 transmits an instruction to execute the seismic control operation to each determined elevator device 21 via the communication unit 29 and the communication line 13.

  In the elevator seismic control system of the first embodiment configured as described above, the average level of vibration data detected by the acceleration sensor during normal operation of each elevator apparatus 21 is within the normal operation vibration in the monitoring center 22. It is stored and held in the level storage unit 32. Then, when the vibration level of the plurality of vibration data received from each elevator device 21 in real time exceeds the average level, the earthquake occurrence determination unit 33, the epicenter and the scale determination unit 35, respectively. On the basis of the earthquake occurrence, the earthquake data of the earthquake occurrence, the epicenter of the earthquake and the magnitude of the earthquake are calculated.

  In this way, since the presence or absence of an earthquake is determined by comparison with the average during normal operation, the presence or absence of an earthquake can be determined with high accuracy even when the level of real-time vibration data is small.

  Therefore, finally, in the elevator apparatus 21 located at a certain distance from the epicenter, it is possible to carry out the government operation for the earthquake with a margin before the P wave and S wave arrive. As a result, it is possible to avoid the confinement accident in the passenger car as much as possible and to reduce the damage to the elevator equipment due to the earthquake.

(Second Embodiment)
FIG. 6 is a block diagram showing a schematic configuration of the monitoring center 22a incorporated in the elevator earthquake control system according to the second embodiment of the present invention. The same parts as those of the monitoring center 22 of the first embodiment shown in FIG. 5 are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted.

  FIG. 7 is a flowchart showing the control operation interruption processing for the earthquake in each elevator apparatus 21 incorporated in the elevator earthquake control system according to the second embodiment. Since the overall view of the earthquake control system and the configuration diagram of the elevator apparatus 21 are substantially the same as those of the first embodiment shown in FIGS. 1 and 2, description thereof will be omitted.

  In the monitoring center 22 a of FIG. 6, real-time data transmitted from each elevator device 21 via the communication line 13 is received by the real-time data receiving unit 33 via the communication unit 29 and sent to the earthquake occurrence determination unit 34. Sent out. The earthquake occurrence determination unit 34 determines that an earthquake has occurred when the vibration level of the real-time data transmitted from each elevator device 21 in real time is equal to or greater than a predetermined amount, and determines the earthquake source and scale. The determination unit 35a is activated.

  When the vibration data from the plurality of elevator devices 21 indicate the occurrence of an earthquake, the earthquake source / scale determination unit 35a calculates the earthquake source, the earthquake scale, and the occurrence time of the corresponding earthquake from the plurality of vibration data. The occurrence time of this earthquake is derived in the calculation process of the epicenter and the magnitude of the earthquake.

  Furthermore, the control operation instruction / occurrence time transmission unit 37a instructs the execution of the control operation via the communication unit 29 and the communication line 13 to each elevator device 21 determined by the target elevator device specifying unit 36, and the occurrence of the earthquake. Send time and epicenter.

  In this way, the monitoring center 22a transmits an instruction to execute an earthquake control operation, the occurrence time of the earthquake, and the epicenter to each elevator device 21 subject to the earthquake.

  Then, the main control unit 24 of the elevator apparatus 21 that has received the execution instruction of the earthquake control operation and the occurrence time of the earthquake from the monitoring center 22a executes the control operation interrupt process shown in FIG. Let That is, the operation mode is switched to the control operation mode (step R1), and the current time, the occurrence time of the earthquake, the epicenter, the propagation speed of the S wave (main shock) of the earthquake, etc. The grace time T until reaching the main shock is calculated (R2). If the car 4 can land on the nearest floor within this grace period T (R3), the moving speed of the car 4 is maintained (set) at a normal speed (R4). Land on the nearest floor (R5), open the door (R6), and stop the elevator (R7).

  Also, at R3, if the car 4 cannot land on the nearest floor within the grace time T, the car 4 will arrive at the nearest floor within the grace time T by rapidly reducing the moving speed of the car 4. When it is possible to floor (R8), the moving speed of the car 4 is rapidly decelerated (R9). Then, the car 4 is landed on the nearest floor (R5), the door is opened (R6), and the elevator is stopped (R7).

  Even if the moving speed of the car 4 is suddenly decelerated, if the car 4 cannot land on the nearest floor within the grace period T, the car 4 is emergency stopped at the current position (R10), Wait for the S wave (main shock) to arrive.

  In the elevator seismic control system according to the second embodiment configured as described above, for example, when an earthquake occurs at a position away from the elevator apparatus 21, an S wave of this earthquake at the current time point arrives. A grace period T is calculated, and according to this grace period T, the driving contents that the passenger in the car 4 can evacuate most safely at the present time point are automatically selected. Therefore, the safety for the user can be further improved.

(Third embodiment)
FIG. 8 is a block diagram showing a schematic configuration of the monitoring center 22b incorporated in the elevator earthquake control system according to the third embodiment of the present invention. The same parts as those of the monitoring center 22a of the second embodiment shown in FIG. 6 are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted. The overall view of the earthquake control system is almost the same as the earthquake control system of the first embodiment shown in FIG. 1, and the control operation processing for the earthquake in each elevator apparatus 21 is the control operation processing of the second embodiment shown in FIG. The description is omitted since it is almost the same.

  In the monitoring center 22 b according to the third embodiment shown in FIG. 8, the normal operation data shown in FIG. 9A transmitted from each elevator device 21 via the communication line 13 is transmitted via the communication unit 29. The data is received by the normal operation data receiving unit 30, frequency-converted by an FFT (Fast Frequency Converter) 38, and input to the updating unit 39 as normal operation frequency data with the horizontal axis shown in FIG.

  In the data memory 40, for example, normal operation frequency data for a predetermined time during normal operation is stored in time series. The averaging unit 41 averages normal operation frequency data for a predetermined time stored in the data memory 40 and writes the average operation frequency data to the normal operation average data memory 42. The update unit 39 updates the stored contents of the data memory 40 with the input frequency data. As a result, the average frequency data stored in the normal operation average data memory 42 is also updated to the latest average data.

  The real-time data shown in FIG. 9C transmitted from each elevator device 21 via the communication line 13 is received by the real-time data receiving unit 33 via the communication unit 29, and an FFT (Fast Frequency Converter). The frequency is converted at 43 and sent to the earthquake occurrence detection unit 44 as real-time frequency data shown in FIG.

  The earthquake occurrence detection unit 44 includes the level of the specific frequency band included in the predetermined seismic vibration of the average frequency data stored in the normal operation average data memory 42, and the real-time frequency data shown in FIG. Is compared with the level of a specific frequency band. Then, when the level of the real-time frequency data is higher than the specified level, it is determined that an earthquake has occurred, and the epicenter / scale determination unit 35a is activated.

  When the vibration data from the plurality of elevator devices 21 indicate the occurrence of an earthquake, the earthquake source / scale determination unit 35a calculates the earthquake source, the earthquake scale, and the occurrence time of the corresponding earthquake from the plurality of vibration data. The occurrence time of this earthquake is derived in the calculation process of the epicenter and the magnitude of the earthquake. The target elevator apparatus specifying unit 36 specifies each elevator apparatus 21 at a position where vibrations of a specified level or more are predicted to occur.

  Furthermore, the control operation instruction / occurrence time transmission unit 37a instructs the execution of the control operation via the communication unit 29 and the communication line 13 to each elevator device 21 determined by the target elevator device specifying unit 36, and the occurrence of the earthquake. Send time and epicenter.

  Then, the main control unit 24 of the elevator apparatus 21 that has received the execution instruction of the earthquake control operation and the occurrence time of the earthquake from the monitoring center 22b performs the control operation interrupt process shown in FIG. Let it run.

  In the elevator seismic control system of the third embodiment configured as described above, the fact that the frequency characteristics of earthquake vibration and the frequency characteristics of vibration during normal operation of the elevator are greatly different is adopted for earthquake detection. Therefore, even if the average level of the real-time vibration data is close to the vibration level during normal operation, the vibration data due to the earthquake can be reliably determined.

(Fourth embodiment)
FIG. 10 is a block diagram showing a schematic configuration of a monitoring center 22c incorporated in an elevator earthquake control system according to the fourth embodiment of the present invention. The same parts as those of the monitoring center 22b of the third embodiment shown in FIG. 8 are denoted by the same reference numerals, and detailed description of the overlapping parts is omitted. The overall view of the earthquake control system is almost the same as the earthquake control system of the first embodiment shown in FIG. 1, and the control operation processing for the earthquake in each elevator apparatus 21 is the control operation processing of the second embodiment shown in FIG. The description is omitted since it is almost the same.

  In the monitoring center 22 c according to the fourth embodiment shown in FIG. 10, the normal operation data shown in FIG. 9A transmitted from each elevator device 21 via the communication line 13 is transmitted via the communication unit 29. The data is received by the normal operation data receiving unit 30, frequency-converted by an FFT (Fast Frequency Converter) 38, and input to the update unit 39 as normal operation frequency data shown in FIG. 9B.

  In the data memory 40, for example, normal operation frequency data for 10 times collected at intervals of 15 days, for example, during normal operation is stored in time series. The statistical processing unit 45 calculates the average m and the standard deviation σ for each frequency band level in the frequency data for 10 times stored in the data memory 40, and the calculated statistical values are shown in FIG. The normal operation statistics data memory 46 shown in FIG. The update unit 39 updates the stored contents of the data memory 40 with the frequency data input every 15 days. As a result, the statistical values such as the average m and the standard deviation σ stored in the normal operation statistical data memory 46 are also updated to the latest statistical values.

  The real time data shown in FIG. 9C transmitted from each elevator device 21 via the communication line 13 is received by the real time data receiving unit 33 via the communication unit 29, and is subjected to an FFT (Fast Frequency Converter). The frequency is converted at 43 and input to the updating unit 48 as the real-time frequency data shown in FIG.

  In the data memory 49, real-time frequency data of real-time data continuously input in real time is stored in a time series for 10 times. The statistical processing unit 50 calculates the average m and the standard deviation σ for each frequency band level in the frequency data for 10 times stored in the data memory 49, and the calculated statistical values are shown in FIG. To the real-time statistical data memory 51 shown in FIG. The update unit 48 updates the contents stored in the data memory 49 with the input frequency data. As a result, the statistical values such as average m and standard deviation σ stored in the real-time statistical data memory 51 are also updated to the latest statistical values.

The real-time frequency data of the real-time data frequency-converted by the FFT 43 is sent to the Mahalanobis distance calculation units 47 and 52. The Mahalanobis distance calculation unit 47 calculates a first Mahalanobis distance D ₁ ² with respect to normal operation data of real-time frequency data. Specifically, each Mahalanobis distance D ₁ ² in the normal operation statistical data memory 46 of FIG.

When the data value of the designated frequency band of the real-time frequency data is d, the Mahalanobis distance D ₁ ² of the frequency band is expressed by the following equation.

D ₁ ² = [(dm) / σ] ²
The first Mahalanobis distance D ₁ ^{2 is obtained} for a predetermined frequency band. The frequency component of the earthquake is included in this frequency band.

The Mahalanobis distance calculation unit 52 calculates a ^second Mahalanobis distance D ₂ ² with respect to its own real-time frequency data. The second Mahalanobis distance D ₂ ^{2 is obtained} for the same frequency band as the first Mahalanobis distance D ₁ ² . The Mahalanobis distance calculation units 47 and 52 send the calculated first and second Mahalanobis distances D ₁ ² and D ₂ ² to the earthquake occurrence detection unit 44a.

The earthquake occurrence detection unit 44a determines that an earthquake has occurred when the second Mahalanobis distance D ₂ ² exceeds a predetermined value, but even if it does not exceed the first Mahalanobis distance D ₁ ² If is sufficiently large, it is determined that an earthquake has occurred. Thus, large variations in real-time data, _{even if} the second Mahalanobis distance D ₂ ² _{is small, can be reliably detected earthquakes.} When the earthquake occurrence detection unit 44a detects the occurrence of an earthquake, the earthquake occurrence, scale and occurrence time determination unit 35a is activated.

  When the vibration data from the plurality of elevator devices 21 indicates the occurrence of an earthquake, the seismic center / scale determination unit 35a calculates the epicenter, the earthquake scale, and the occurrence time of the corresponding earthquake from the plurality of vibration data. The occurrence time of this earthquake is derived in the calculation process of the epicenter and the magnitude of the earthquake. The target elevator apparatus specifying unit 36 specifies each elevator apparatus 21 at a position where vibrations of a specified level or more are predicted to occur.

  Furthermore, the control operation instruction / occurrence time transmission unit 37a instructs the execution of the control operation via the communication unit 29 and the communication line 13 to each elevator device 21 determined by the target elevator device specifying unit 36, and the occurrence of the earthquake. Send time and epicenter.

  Then, the main control unit 24 of the elevator apparatus 21 that has received the execution instruction of the earthquake control operation and the occurrence time of the earthquake from the monitoring center 22b performs the control operation interrupt process shown in FIG. Let it run.

  In the elevator seismic control system according to the fourth embodiment configured as described above, the occurrence of an earthquake is determined using the Mahalanobis distance. Therefore, real-time vibration data resulting from an earthquake different from vibration data during normal operation can be specified. Therefore, the detection accuracy of the occurrence of earthquake can be improved.

(Fifth embodiment)
FIG. 12 is a block diagram showing an essential part of the monitoring center 22d incorporated in the elevator earthquake control system according to the fifth embodiment of the present invention. That is, the monitoring center 22d of the fifth embodiment includes an adjacent elevator apparatus survey unit 53 between the earthquake occurrence detection unit 44 and the epicenter / scale determination unit 35a in the monitoring center 22b of the third embodiment shown in FIG. In addition, an earthquake occurrence canceling unit 53 is provided between the real-time data receiving unit 33 and the adjacent elevator apparatus examining unit 53. The other earthquake seismic control system is the same as that of the first embodiment shown in FIG. 1, and each elevator apparatus 21 has the schematic configuration shown in FIG. 2, and executes the control operation interruption process shown in FIG.

  In FIG. 12, the real time data shown in FIG. 9C transmitted from each elevator device 21 via the communication line 13 is received by the real time data receiving unit 33 via the communication unit 29, and is subjected to FFT (high speed). The frequency is converted by a frequency converter 43 and sent to the earthquake occurrence detection unit 44 as real-time frequency data shown in FIG.

  The earthquake occurrence detection unit 44 includes the level of the specific frequency band included in the predetermined seismic vibration of the average frequency data stored in the normal operation average data memory 42, and the real-time frequency data shown in FIG. Is compared with the level of a specific frequency band. Then, when the level of the real-time frequency data is higher than the specified level, it is determined that an earthquake has occurred, and the adjacent elevator apparatus investigation unit 53 is driven.

  The adjacent elevator apparatus investigation unit 53 uses the real-time data from other elevators 21 installed adjacent to or in the same area as the transmission source of the real-time data determined to have occurred by the earthquake occurrence detection unit 44. Check whether an occurrence has already been detected. If it has not been detected yet, it waits for a specified time of 1 to 2 seconds.

  If the occurrence of an earthquake is not detected by the earthquake occurrence detection unit 44 even after the specified time of 1 to 2 seconds has passed, the earthquake occurrence cancellation unit 54 assumes that the previous earthquake occurrence detection unit 44 has detected an error. Notifies the real-time data receiver 33 picture. Moreover, the adjacent elevator apparatus investigation part 53 does not start the epicenter and the scale determination part 35a.

  In addition, the occurrence of an earthquake has already been detected from real-time data from another elevator device 21 installed adjacent to or in the same area as the elevator device 21 that is the transmission source of the real-time data determined by the earthquake occurrence detection unit 44 as an occurrence of an earthquake. If the occurrence of an earthquake is detected within a specified time of 1 to 2 seconds, even if it has not been detected yet, it is determined that an earthquake has occurred and the power source and scale determination unit 35a is activated. Then, the power source and scale determination unit 35a is the epicenter, and the scale determination unit 35a is that when the vibration data from the plurality of elevator devices 21 indicates the occurrence of an earthquake, from the plurality of vibration data, the epicenter of the corresponding earthquake, the earthquake scale And the time of occurrence is calculated.

  In the elevator seismic control system of the fifth embodiment configured as described above, high-level real-time data is erroneously received from one elevator apparatus 21 in a large number of elevator apparatuses 21 installed in a wide area. Even if it is transmitted to the normal, real-time data is output from another elevator device 21 adjacent to this elevator device 21 or installed in the same area. Therefore, the reliability of the entire system can be improved without accidentally performing the control operation in each elevator apparatus 21.

The figure which shows schematic structure of the earthquake control system of the elevator concerning 1st Embodiment of this invention. A block diagram of a schematic configuration of an elevator apparatus incorporated in the elevator earthquake control system of the embodiment Flow chart showing vibration data transmission processing of the elevator apparatus Flow chart showing control operation interruption processing of the elevator apparatus A block diagram showing a schematic configuration of a monitoring center incorporated in the elevator earthquake control system of the embodiment Block diagram of a schematic configuration of a monitoring center incorporated in an elevator earthquake control system according to a second embodiment of the present invention. The flowchart which shows the control operation interruption process of the elevator apparatus integrated in the earthquake control system of the elevator of the embodiment A block diagram showing a schematic configuration of a monitoring center incorporated in an elevator earthquake control system according to a third embodiment of the present invention. The figure which shows the data waveform in the monitoring center incorporated in the earthquake control system of the elevator of the embodiment A block diagram of a schematic configuration of a monitoring center incorporated in an elevator earthquake control system according to a fourth embodiment of the present invention. The figure which shows the memory content of the memory | storage part in the monitoring center incorporated in the earthquake control system of the elevator of the embodiment A block diagram showing a part of the monitoring center incorporated in the elevator earthquake control system according to the fifth embodiment of the present invention. A block diagram showing a schematic configuration of a conventional elevator apparatus Flow chart showing seismic monitoring processing of the conventional elevator apparatus

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 4 ... Car, 6 ... P wave seismic detector, 7 ... S wave seismic detector, 11 ... Normal operation part, 12 ... Control operation part, 13 ... Communication line, 15, 29 ... Communication part, 21 ... Elevator device, 22, 22a, 22b, 22c, 22d ... Monitoring center, 23 ... Control panel, 24 ... Main control unit, 25 ... Normal operation data transmission unit, 26 ... Real time data transmission unit, 30 ... Normal operation data reception , 31 ... update unit, 32 ... normal operation vibration level storage unit, 33 ... real-time data reception unit, 34, 44 ... earthquake occurrence determination unit, 35 ... epicenter, scale determination unit, 36 ... target elevator apparatus specifying device, 37 ... Control operation instruction transmission unit, 37a ... Control operation instruction / occurrence time transmission unit, 38, 43 ... FET, 39, 48 ... Update unit, 40, 49 ... Data memory, 41 ... Averaging unit, 42 ... Normal operation average data Memory, 44, 50 Statistical processing unit, 46 ... normal operation statistical data memory, 47 and 52 ... Mahalanobis distance calculation section, 51 ... real-time statistical data memory, 53 ... adjacent elevator apparatus survey unit, 54 ... earthquake cancellation unit

Claims (5)

Seismic control of an elevator comprising a plurality of elevator devices incorporating seismic detectors with built-in acceleration sensors and widely distributed, and a monitoring center connected to each of the plurality of elevator devices via a communication line. In the system,
Each of the elevator devices is
Vibration data transmitting means for transmitting vibration data detected by the acceleration sensor of the earthquake sensor to the monitoring center in real time via the communication line;
Control operation execution means for executing the control operation when receiving an execution command of the control operation for the earthquake from the monitoring center via the communication line,
The monitoring center is
Average level storage means for storing an average level of vibration data detected by the acceleration sensor during normal operation of each elevator device;
When the vibration level of a plurality of vibration data received in real time from each of the elevator devices within a predetermined time exceeds the average level, an earthquake is generated based on each vibration data, and the earthquake source and the earthquake An earthquake data calculating means for calculating earthquake data with a scale;
Determination means for determining an elevator device that is predicted to generate a vibration of a predetermined level or more based on the earthquake data calculated by the earthquake data calculation means;
An elevator seismic control system comprising: execution command transmitting means for transmitting a control operation execution command to the determined elevator device via the communication line. The earthquake data calculation means calculates an earthquake occurrence based on each vibration data, the earthquake data of the earthquake's epicenter, occurrence time and magnitude,
The execution command transmission means transmits an earthquake occurrence time together with the execution command of the control operation,
2. The control operation execution means calculates a grace period from the earthquake occurrence time until the earthquake reaches the elevator apparatus, and changes the control operation content according to the grace time. Elevator seismic control system. A seismic control system for an elevator comprising a plurality of elevator devices in which seismic sensors with built-in acceleration sensors are incorporated and widely distributed, and a monitoring center connected to each of the elevator devices via a communication line. In
Each of the elevator devices includes vibration data transmitting means for transmitting vibration data detected by an acceleration sensor of the earthquake detector to the monitoring center in real time via the communication line, and from the monitoring center via the communication line. Control operation execution means for executing the control operation when receiving an execution command of the control operation for the earthquake,
The monitoring center is
Frequency average level storage means for storing an average level of frequency data obtained by frequency-converting vibration data detected by the acceleration sensor during normal operation of each elevator device;
When a vibration level obtained by frequency conversion of a plurality of vibration data received in real time from each of the elevator devices within a predetermined time exceeds the frequency average level, an earthquake occurs based on the vibration data. An earthquake data calculating means for calculating earthquake data of an earthquake source and magnitude,
Determination means for determining an elevator device that is predicted to generate a vibration of a predetermined level or more based on the earthquake data calculated by the earthquake data calculation means;
An elevator seismic control system comprising: execution command transmitting means for transmitting a control operation execution command to the determined elevator device via the communication line. A seismic control system for an elevator comprising a plurality of elevator devices in which seismic sensors with built-in acceleration sensors are incorporated and widely distributed, and a monitoring center connected to each of the elevator devices via a communication line. In
Each of the elevator devices is
Vibration data transmitting means for transmitting vibration data detected by the acceleration sensor of the earthquake sensor to the monitoring center in real time via the communication line;
Control operation execution means for executing the control operation when receiving an execution command of the control operation for the earthquake from the monitoring center via the communication line,
The monitoring center is
Normal operation data storage means for storing a statistical value of frequency data obtained by frequency-converting vibration data detected by the acceleration sensor during normal operation of each elevator device;
Real-time data storage means for storing statistical values of frequency data obtained by frequency-converting vibration data sequentially received from each of the elevator devices in real time;
The first Mahalanobis distance with respect to the normal operation vibration data and the second Mahalanobis distance with respect to the real-time vibration data of the vibration data sequentially received in the real time are calculated using the statistical values, and each of the calculated Mahalanobis distances is calculated. An earthquake determination means for determining occurrence of an earthquake based on
An earthquake data calculating means for calculating the earthquake data of the epicenter and magnitude of the earthquake based on the vibration data determined by the earthquake when the occurrence of an earthquake is determined by the earthquake determining means;
Determination means for determining an elevator device that is predicted to generate a vibration of a predetermined level or more based on the earthquake data calculated by the earthquake data calculation means;
An elevator seismic control system comprising: execution command transmitting means for transmitting a control operation execution command to the determined elevator device via the communication line.   The monitoring center, when determining the occurrence of an earthquake based on vibration data from an elevator device arranged in a certain area, when not determining the occurrence of an earthquake based on vibration data from an elevator device arranged in an adjacent area, The elevator earthquake control system according to any one of claims 1 to 4, further comprising determination cancellation means for canceling the determination of occurrence of an earthquake.

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