JP2009046273A - Earthquake controlled operation system of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a case where controlled operation is carried out according to an estimated arrival time of S waves when using an emergency earthquake advance report. <P>SOLUTION: The elevator equipped with a P-wave sensor comprises a means receiving the emergency earthquake advance report; a means calculating the estimated arrival time of P waves according to the emergency earthquake advance report; and a control operation instructing means executing controlled operation according to the P-wave sensor when the p-wave sensor is actuated, and executing controlled operation corresponding to the estimated arrival time of the P waves, an estimated earthquake intensity, and a car state when the emergency earthquake advance report is received before the actuation of the P-wave sensor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator seismic control operation system that controls an elevator by control operation according to information obtained from an earthquake early warning or an operation state of an earthquake detector.

  The conventional elevator seismic control operation system is equipped with a P-wave sensor that senses initial tremor and an S-wave sensor that senses main motion, and when the initial tremor is detected by the P-wave sensor, the elevator stops at the nearest floor. Control operations such as stopping the elevator suddenly when an earthquake with a large seismic intensity is detected by the S-wave detector are performed.

  However, since this method starts the control operation after detecting that an earthquake has actually occurred, especially when an earthquake occurs while the elevator is running, the equipment in the hoistway collides or the rope becomes severe. Control operation is carried out while vibrating, and when the seismic intensity is large, it becomes a very dangerous state.

Therefore, in recent years, the control operation of the elevator can be started before the earthquake reaches the installation position of the elevator, rather than starting the control operation after the seismic detector installed in the building is activated. An earthquake seismic control operation system using emergency earthquake warning (real-time earthquake information) has been proposed (see Patent Document 1).
JP 2004-284758 A

  Here, the earthquake early warning is a quick report of earthquake occurrence information obtained from the earthquake observation network installed nationwide by the Japan Meteorological Agency, and the transmission speed of P wave (initial tremor) and S wave (main motion) generated by the earthquake. Using the difference between the two, we immediately predict the location of the epicenter and the magnitude of the earthquake (seismic intensity) from the P waves detected at multiple observation points near the epicenter at the time of the earthquake. It is intended to be delivered.

  In the above-mentioned Patent Document 1, the time until the arrival of the S-wave and the magnitude of the earthquake is received and the elevator is stopped at the nearest floor or temporarily stopped according to the margin time. They are going to drive straight to the evacuation floor without having to.

  On the other hand, recently, P-wave detectors are often installed at elevator installation locations. When this P-wave detector is activated, it can be decelerated to the nearest floor when the elevator is running. It is common.

  For this reason, in an elevator equipped with a P-wave detector, an earthquake early warning is received before the P-wave arrives, and goes straight to the evacuation floor, for example, according to the predicted arrival time of the S-wave as in Patent Document 1 above. When driving, if the P wave arrives during the direct driving, the control operation by the P wave sensor is given priority, and the elevator stops at the nearest floor. At this time, when traveling in an express zone, the nearest floor stop is not in time, and as a result, if an S wave arrives during traveling, a very dangerous situation occurs.

  The present invention has been made in view of the above-described problems. When an earthquake early warning is received before the P-wave detector is activated in using the earthquake early warning, the present invention is based on the predicted arrival time of the S wave. Rather than control operation, calculate the P wave arrival prediction time, control operation according to the predicted time until P wave arrival, that is, stop the car to the nearest floor before the P wave arrives, evacuate The purpose is to further improve the safety of passengers and prevent damage to equipment by moving them to the floor.

  The elevator seismic control operation system according to the present invention is an elevator equipped with a P-wave detector, means for receiving an emergency earthquake warning, means for calculating an expected arrival time of a P wave based on the emergency earthquake warning, When the P-wave sensor is activated, control operation based on the P-wave sensor is performed, and when the earthquake early warning is received before the P-wave sensor is activated, the estimated arrival time of the P-wave and the predicted time Control operation command means for performing control operation in accordance with the seismic intensity and the state of the car is provided.

  According to the present invention, not only knowing the predicted seismic intensity and expected arrival time of S waves based on the earthquake early warning, but also predicting the arrival time of P waves, and control operation according to the surplus time until the arrival of P waves. As a result, especially when an earthquake early warning is received before the arrival of the P wave, the risk that the P wave sensor will be activated or the S wave will arrive while traveling can be reduced as much as possible. Therefore, it is possible to realize a control operation with higher safety.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an elevator seismic control operation system according to an embodiment of the present invention, FIG. 2 is a flowchart for explaining seismic control operation of an elevator according to the present invention, and FIG. 3 is a flowchart of step S6 in FIG. 4 is a flowchart for explaining details, and FIG. 4 is a flowchart for explaining details of step S7 in FIG.

  In FIG. 1, 1 is an elevator control device, 2 is an earthquake early warning receiving unit that receives an earthquake early warning, and 3 is an estimated time of arrival of a P wave from data such as an earthquake location and occurrence time included in the earthquake early warning. P wave expected time calculation unit, 4 is a seismic control operation command unit that generates different seismic control operation commands depending on the expected arrival time of P wave, predicted seismic intensity of S wave, etc. 5 is a registered call or earthquake control An operation control unit that controls the operation of the elevator according to the operation command, 6 is an elevator car, 7 is a P-wave sensor, and 8 is an S-wave sensor.

  Hereinafter, the procedure of the earthquake control operation of the elevator according to the present invention will be described based on the configuration of FIG. 1 and the flowcharts of FIGS.

  First, in step S1, it is confirmed whether or not the P-wave seismic detector is activated by detecting the initial tremor. If the P-wave sensor is not activated, it is determined whether or not an emergency earthquake warning is received in step S2. Check. When the location of the earthquake is relatively close to the elevator installation location, the P wave arrives before the earthquake early warning and the P wave detector is activated. In this case, the process proceeds from step S1 to S3. Control operation by P-wave detection is performed with priority. In other words, if the car is stopped, it stands by, and if it is running, it decelerates and stops to the nearest floor. After that, if the S wave arrives and the seismic intensity is less than the predetermined value, the P wave detector is reset after a certain period of time and returns to normal operation. If the seismic intensity is greater than the predetermined value, automatic inspection operation or inspection by maintenance personnel Control operation such as returning to normal operation after confirming the presence or absence of abnormality is performed.

On the other hand, if the location of the elevator is far from the location of the earthquake, the earthquake early warning will be received before the arrival of the P wave. In this case, the process proceeds from step S2 to S4. The control operation of S4 and below will be carried out.
First, in step S4, the time until the P wave arrives is calculated from the earthquake early warning data. The earthquake early warning includes the location of the earthquake (latitude, longitude, depth of the earthquake) and the time of occurrence, while the location where the elevator is installed and the transmission speed of the P wave are known, so The expected time can be easily calculated.

  Next, it is determined whether or not the current state of the car is waiting for door closing (step S5). If the door is waiting for door closing, the process proceeds to step S6 and the control operation during the door closing standby described later is performed. If the vehicle is traveling, the process proceeds to step S7, and the control operation during traveling described later is performed. Thereafter, when the seismic wave arrives (step S8), the P-wave sensor or the S-wave sensor is operated, and the control operation based on the operation of the seismic sensor is performed as in the conventional case (step S9).

  FIG. 3 is a flowchart showing details of step S6 of FIG. 2, that is, details of the control operation when an emergency earthquake warning is received while the car is waiting for door closing.

  First, it is determined in step S61 whether or not the predicted seismic intensity of the S wave obtained by the emergency earthquake warning is 3 or less. If the predicted seismic intensity is 3 or less, the process proceeds to step S62, and the car continues in a standby state. The reason why the standby state is continued regardless of the estimated arrival time of the P wave is that if the seismic intensity is 3 or less, there is little risk of being important, and it is not necessary to dare to move to a safe floor. Therefore, even if the activation is prohibited, it is not always necessary to enter the door closing standby, and passengers may be able to enter by opening the door.

  When the predicted seismic intensity of the S wave is 4 or more, the process proceeds from step S61 to S63, and then it is determined whether or not the predicted arrival time of the P wave calculated in step S4 is less than a predetermined value, for example, 10 seconds or less. . If the estimated time of P wave arrival is 10 seconds or less, if the car is moved to a safe floor, the P wave detector may be activated during the movement, so the car will continue to wait for door closing. The boarding of passengers is prohibited (step S64).

  On the other hand, if the predicted arrival time of the P wave exceeds 10 seconds, the process proceeds to step S65, and it is determined whether the predicted seismic intensity of the S wave is 4-5 weak or 5 strong. If the predicted seismic intensity is less than 4-5, proceed to step S66, move the car to the nearest floor (evacuation floor) from the current position, and wait for door closing at that edge floor to enter a new passenger Is prohibited. The reason for moving the car to the end floor when the predicted seismic intensity is 4-5 is that the new seismic design standard is expected to enable automatic return by automatic inspection if the seismic intensity is about 5 or less. This is because it is most efficient to start the inspection from the end floor. Of course, it is needless to say that this seismic intensity range can be appropriately changed in accordance with the change of the seismic design standard.

  If the predicted seismic intensity is 5 or higher, proceed from step S65 to S67, move the car to the middle floor (evacuation floor), which is the approximate middle part of the lifting process, and wait for the door to close Prohibit passengers from entering. The reason for moving the car to the intermediate floor is that there is a possibility that the rope will swing greatly if the seismic intensity is 5 or higher, and that the effect of moving the car to the intermediate position where the distance of the rope between fulcrums is the shortest will be reduced. This is to reduce as much as possible.

  FIG. 4 is a flowchart showing details of step S7 of FIG. 2, that is, details of the control operation when the earthquake early warning is received while the car is traveling.

  First, in step S71, it is determined whether or not the estimated arrival time of the P wave calculated in step S4 is a predetermined value or less, for example, 10 seconds or less. If the estimated arrival time of the P wave is 10 seconds or less, there is a possibility that the P wave detector may be activated while the car continues to travel. Therefore, the passenger immediately decelerates and stops to the nearest floor (step S72). After the car is lowered from the car, the door is put on standby (step S73). Here, as in the case of FIG. 3, the door can be opened and the door is closed depending on whether the predicted seismic intensity is 3 or less.

On the other hand, if the expected arrival time of the P wave exceeds 10 seconds, the process proceeds from step S71 to S74, the operation is continued to the destination floor, the passengers are lowered, and the door is closed.
Next, it is determined in step S75 whether or not the remaining time of the expected time from the door closing completion to the arrival of the P wave is a predetermined value or less, for example, 10 seconds or less. As in the case of S64, if the car is moved to a safe floor, the P-wave detector may be activated during the movement, so the car will continue to wait for the door to close and allow a new passenger to enter. It is prohibited (step S76).

  If the remaining time of the expected time until the P wave reaches exceeds 10 seconds, the process proceeds to step S77, and in the same manner as in FIG. 3, whether the predicted seismic intensity of the S wave is 4-5 weak or 5 strong or more. to decide. If the predicted seismic intensity is less than 4-5, proceed to step S78, move the car to the end floor (evacuation floor) closer to the current position, wait for the door to close at that end floor, and prohibit new passengers from entering To do. If the predicted seismic intensity is 5 or higher, the process proceeds from step S77 to S79, the car is moved to the middle floor (evacuation floor), which is approximately the middle part of the lifting and lowering process, and a new passenger boarding on the middle floor Ban. Here, the reason for moving the car to the end floor or the intermediate floor is the same as in the case of FIG.

In this way, a series of steps S61 to S67 or steps S71 to S79.
After completing the above, unless there is a prediction error in the estimated arrival time of the P wave, when the earthquake arrives in step S8, the car is already waiting on any floor. Minimize the danger and damage to the basket.

  In addition, when the P wave arrives earlier than the expected arrival time after receiving the earthquake early warning, the P wave detector is activated at that time, and the control operation by the P wave detector is given priority. In some cases, however, the control operation has already started when the earthquake early warning is received, so the car is moving toward a safer state than when the P-wave detector is activated and then the control operation is started. Even in such a case, passenger safety and damage reduction can be achieved.

In the above embodiment, the estimated arrival time of the P wave is used as an example, and 10 seconds is used as a reference. Here, a building that can move from an arbitrary floor to a safe floor in about 10 seconds is assumed. This time may be set freely according to the ascending / descending distance of the building.
Further, in the above embodiment, the P wave arrival prediction time is divided into two stages in the case where the estimated arrival time of the P wave is 10 seconds or less and more than 10 seconds, which is different control operation, but this is 10 seconds or less, 10 to 20 seconds and 20 seconds. You may make it control finely by increasing the number of steps, such as dividing into three steps such as more than a second.

  In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

1 is an overall configuration diagram of an elevator earthquake control operation system according to an embodiment of the present invention. It is a flowchart for demonstrating the earthquake control operation of the elevator which concerns on this invention. It is a flowchart for demonstrating the detail of step S6 in FIG. It is a flowchart for demonstrating the detail of step S7 in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator control apparatus 2 Earthquake early warning reception part 3 P wave arrival prediction time calculation part 4 Seismic control operation instruction part 5 Operation control part 6 Elevator car 7 P wave detector 8 S wave detector

Claims (5)

In an elevator equipped with a P-wave sensor, means for receiving an earthquake early warning, means for calculating an estimated arrival time of a P-wave based on the emergency earthquake warning, and a P-wave when the P-wave sensor is activated If the control operation based on the sensor is performed and the earthquake early warning is received before the P-wave sensor is activated, the control operation according to the estimated arrival time of the P-wave, the predicted seismic intensity and the state of the car is performed. An elevator seismic control operation system characterized by comprising control operation command means for carrying out. In the control operation according to the predicted arrival time of the P wave and the predicted seismic intensity and the state of the car, if the predicted arrival time of the P wave is equal to or less than a predetermined value, if the car is stopped, wait on that floor, The seismic control operation system for elevators according to claim 1, characterized in that if it is running, the nearest floor is stopped. In control operation according to the predicted arrival time of P wave, predicted seismic intensity, and the state of the car, if the predicted arrival time of P wave is more than a predetermined value and there is a time allowance, the estimated seismic intensity is lowered after the passenger is lowered. The elevator seismic control operation system according to claim 1, wherein the car is moved to a predetermined evacuation floor in response. 4. The elevator earthquake control operation system according to claim 3, wherein the predetermined evacuation floor is an end floor closest to the car position. The elevator seismic control operation system, wherein the predetermined evacuation floor is an intermediate floor that is substantially in the center of the up-and-down stroke.

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