JPH0631140B2 - Elevator seismic control method and control device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an elevator seismic control method and control device, and more particularly to an elevator seismic control method for stopping an elevator after an earthquake at the nearest floor and restoring the elevator after the earthquake. Regarding control equipment.

[Technical background of the invention]

In order to ensure the safety of passengers during an earthquake, it is desirable to install a seismic control device in the elevator. This seismic control system generally has a seismograph and functions to safely stop the elevator at the nearest floor when detecting a vibration above a certain level. In recent years, there has also been proposed an earthquake control device that automatically performs recovery operation after an earthquake. That is, after stopping at the nearest floor, if the vibration has subsided, the elevator is first made to perform a test operation for inspection, and if there is no abnormality, a recovery operation is automatically performed. Such seismic control equipment automatically restarts operation as long as there is no abnormality even if maintenance personnel do not inspect and check after the earthquake occurs, so even if a wide area earthquake occurs, the elevator downtime can be minimized. It can be convenient.

[Problems of background technology]

However, the above-mentioned seismic control system has a drawback in safety. Generally, earthquakes are often accompanied by aftershocks after the main shock, and these aftershocks may occur several times a day after a certain period of time. Even if the seismic control system determines that there is no abnormality after the main shock and restores operation, the main shock often causes some damage to buildings and elevator systems. Therefore, performing a recovery operation with the same safety standards as before the main shock causes a safety problem when an aftershock occurs.Therefore, recently, an example in which the safety standard during recovery operation is set to a value different from that during normal operation There are many.

However, it is difficult to secure sufficient safety and serviceability by simply dividing the safety standard value into two cases for both the recovery operation and the normal operation. This is because when an earthquake occurs again during restoration operation, the safety standard value for restoration operation is set to a low value, so it often stops immediately on the nearest floor. From the perspective of ensuring
It is preferable to continue the recovery operation prohibition state as it is.On the other hand, from the viewpoint of improving serviceability, if an earthquake does not occur after a certain period of time,
It is preferable to remove the recovery operation prohibition state as soon as possible.

However, the conventional elevator control method, as described above, simply sets the safety standard value at the time of restoration operation to a lower level, so if the operation is stopped due to an aftershock during restoration operation, It was not possible to judge whether this state of prohibition of recovery operation should be continued as it is, or whether it should be released after a certain period of time.

[Object of the Invention]

Therefore, an object of the present invention is to provide an elevator seismic control method and control device that can sufficiently secure both safety and serviceability against aftershocks during recovery operation after an earthquake.

[Outline of Invention]

The feature of the present invention is to perform seismic control of an elevator by stopping the car at the nearest floor when an earthquake of a certain scale or more occurs, and performing an elevator restoration operation when it is determined by inspection that there is no abnormality after the earthquake. At the time of restoration operation after stopping once at the nearest floor, the standard for stopping at the nearest floor when there is another earthquake is lowered from that during normal operation, and when this again earthquake is more than the standard Only after that, by prohibiting the recovery operation after that, the safety against aftershocks was sufficiently secured and the serviceability was improved.

Example of Invention

Hereinafter, the present invention will be described in detail based on illustrated embodiments. First
FIG. 2 and FIG. 2 are flow charts showing an example of the seismic control method according to the present invention. In the present invention, according to the scale of the earthquake,
Although the second and third standards (first standard ≧ third standard ≧ second standard) are set, these are set to 150 gal, 100 gal, and 80 gal, respectively, as an example in the present embodiment. First
The figure is a flow chart showing the procedure of earthquake detection. When an earthquake is detected, it is first determined in step s1 whether or not the recovery operation is in progress.
That is, after the maintenance inspection by the maintenance staff, if the nearest floor stop operation due to the earthquake has never been performed, the normal operation is performed, and if the nearest floor stop operation due to the earthquake is performed even once, the recovery operation is performed. In the case of normal operation, in step s2, it is determined whether or not the magnitude of the earthquake is equal to or larger than the first criterion (150 gal). If it is equal to or greater than the criterion, the nearest floor stop flag is set in step s3. On the other hand, when the recovery operation is in progress, in step s4, the magnitude of the earthquake is the second criterion (80 ga
l) It is judged whether or not the above. Since there is a possibility that the building and elevator equipment may be damaged during the restoration operation, the standard is set lower than during the normal operation to improve safety. If it is equal to or more than the reference, the nearest floor stop flag is set in step s5. Furthermore, in step s6, it is determined whether or not the magnitude of the earthquake is the third criterion (100 gal) or more. FIG. 2 is a flow chart showing an operating procedure of an elevator controlled by such a flag. First, in step s8, it is determined whether or not the nearest floor stop flag is set, and if it is set, the car is immediately stopped at the nearest floor in step s9. After the earthquake, it is determined in step s10 whether or not the recovery prohibition flag is set. If it is set, the recovery operation is not performed, and the elevator is not operated until the maintenance staff finishes the inspection and maintenance. If the flag is not set, automatic inspection is performed in step s11, and if it is determined that there is no abnormality, recovery operation is started in step s12,
In step s13, the nearest floor stop flag is cleared.

Next, an example of an earthquake control device for implementing the above-mentioned seismic control method is shown. FIG. 3 is a hardware configuration diagram of this seismic control device. The seismograph 11 is composed of three seismic detectors A, B and C which are activated by mechanical movements. The detector A is sensitive to an earthquake having a low reference value, for example, 80 gal or more, and outputs a signal a. Similarly, the detectors B and C are sensitive to an earthquake having a medium reference value or a high reference value, for example, 100 gal or 150 gal, and output signals b and c, respectively. The output of the seismograph 1 is given to the control device 2. The control device 2 includes an input buffer 3, a microcomputer 4, and an output buffer 5. The input buffer 3 receives the signals a, b and c from the seismograph 1 and at the same time receives the signals from the mode switch 6 and the setting switches 7-1, 7-2 and 7-3. The data supplied to the input buffer 3 is processed by the microcomputer 4, and the control signal is sent to the output buffer 5. The output buffer 5 has indicator lights 8-1, 8-
2, 8-3 while sending a display signal to the speed control device 9
Give a control signal to. The speed control device 9 controls the electric motor 10 of the elevator. Output buffer 5 is seismograph 1
The reset signal d is applied to.

The operation of this seismic control device will be described with reference to the software configuration diagram of FIG. This figure shows the configuration of the control device 2 in FIG. 3 by software blocks, and the same components as those in FIG. 3 are designated by the same reference numerals. First, the first, second, and third standards are set in advance in consideration of the ground of the installation location of the elevator, the strength of the building, and the like. This setting is performed by the mode switch 6 and the setting switches 7-1, 7-2, 7
It is performed by the reference setting unit 11 by inputting from -3. This setting operation is indicated by the indicator lights 8-1, 8-2, and 8-3 by the indicator light drive unit 12. Next, the operation when an earthquake occurs will be described. When an earthquake occurs, the signals a, b, and c are given to the earthquake level detector 13 according to the magnitude of the earthquake. The seismic level detecting section 13 gives the seismic level data to the seismograph resetting section 14 and the judging section 15. In response to this, the seismometer reset unit 14 outputs a reset signal d to reset the seismometer 1. Further, the earthquake level detection unit 13 sends data to the indicator light drive unit 12, and the indicator light drive unit turns on the indicator light 8 according to the scale of the earthquake. On the other hand, the judgment unit 15 compares the data given from the seismic level detector 13 with the first, second and third standards set in the standard setting unit 11, and follows the procedure shown in FIG. Then, a signal for instructing whether or not to set each flag is sent. The operation control unit 16 sends a control signal to the speed control device 9 so as to operate the elevator according to the procedure shown in FIG.

Finally, an example of the standard setting operation in the standard setting unit 11 will be described with reference to the flowchart of FIG. First, step s14
It is determined whether or not the set mode is set. That is, if the mode switch 6 is on the set side, it is the set mode, if it is on the reset side, the reset mode, and if it is in the neutral state, it is the neutral mode. If it is the set mode, the rising edge of the setting switch 7, that is, the rising time is detected in step s15. An up edge is detected at the moment any one of the setting switches 7 is pressed, and the counter C counts up by 1 in step s16. The initial value of the counter C is 0 as described later. In this embodiment, each standard is set in the order of the first standard, the second standard, and the third standard,
These correspond to counters C = 1, 2, 3, respectively.
Therefore, first, the first reference is set. Step s
In 17, the pressed setting switches are 7-1, 7-2, 7-
It was determined which of the three. Each of these switches has a low, medium, and high reference value, 80 gal in the above example,
It corresponds to 100gal and 150gal. For example, when setting 150 gal as the first reference, the setting switch 7-3 is pressed. In step s18, the reference value corresponding to the pressed setting switch 7 is selected. Then, in step s19, the value of the counter C is determined. Step s
At 20, the counter C is set to the value selected at step s18.
The first, second and third criteria are set according to the value of. In this example, since the counter C = 1, 150 gal selected as the first reference is set in step s20-1. In step s21, it is determined whether or not the counter C = 3. That is, the same procedure is repeated until the counter C = 3 and the setting of the third reference is completed. It should be noted that which of the low, medium and high reference values is set as the currently set reference is displayed on the indicator lamp 8 via the indicator lamp drive unit 12. For example, by pressing the setting switch 7-3, 15
It will be set to 0 gal (high reference value), but at this time, the indicator lamp 8-3 lights up to indicate this. As another example, nine indicator lights may be used, and indicator lights corresponding to low, medium and high for each of the first, second and third standards may be provided.
On the other hand, in the case of the reset mode, the low reference values are all set to the first, second and third references in step s23. In the above example, all the standards are set to 80 gal, and if an earthquake of 80 gal or more occurs, the car will stop at the nearest floor, and recovery operation will be prohibited thereafter. When resetting in this way, the setting will always be made on the safe side. If it is determined in step s22 that the neutral mode is set, no setting change is made. In the reset mode and the neutral mode, the counter C is cleared to the initial value 0 in step s24.
Although an example of setting each standard by the mode switch 6 and the setting switch 7 has been described above, it is also possible to provide an input terminal such as a keyboard in the control room of the elevator to perform more advanced setting.

〔The invention's effect〕

As described above, according to the present invention, the second criterion during the recovery operation is set lower than the first criterion during the normal operation, and an earthquake that exceeds the second criterion occurs during the recovery operation. In this case, since the recovery operation is prohibited only when the magnitude of this earthquake exceeds the third criterion, sufficient safety can be ensured and serviceability can be improved.

[Brief description of drawings]

FIG. 1 is a flow chart showing a procedure of earthquake detection according to the present invention, FIG. 2 is a flow chart showing an operating procedure of an elevator according to the present invention, and FIG. 3 is a hardware configuration diagram of an earthquake control device according to the present invention. FIG. 4 is a software configuration diagram of the seismic control system according to the present invention, and FIG. 5 is a flow chart showing an example of the reference setting operation. 1 ... Seismometer, 2 ... Control device, 3 ... Input buffer,
4 ... Microcomputer, 5 ... Output buffer, 6
...... Mode switch, 7 …… Setting switch, 8 …… Indicator, 9 …… Speed control device, 10 …… Motor, 11 …… Reference setting section, 12 …… Indicator drive section, 13 …… Seismic level detection Section, 14 ... seismometer resetting section, 15 ... judging section, 16 ... operation control section.

Claims (2)

[Claims] 1. An earthquake seismic control method for an elevator, in which, when an earthquake occurs, the car is stopped at the nearest floor according to the scale of the earthquake, and the elevator is restored and operated if it is determined by inspection to be normal after the earthquake. When the earthquake occurs, it is determined whether the elevator is in normal operation or in recovery operation, and in the case of the normal operation, the car is stopped at the nearest floor when the scale of the earthquake is the first criterion or more. , During the restoration operation, the magnitude of the earthquake is the second criterion (second
Of the standard ≦ the first standard) or more, the car is stopped at the nearest floor, and the magnitude of the earthquake is the third standard (first standard ≧ third standard ≧ the second standard) ) When the above is the case, a seismic control method for elevators characterized by prohibiting subsequent recovery operations. 2. A seismograph having a plurality of detection standards, which generates a signal corresponding to each of the detection standards when an earthquake of the detection standards or more occurs, a first standard, a second standard, And a standard setting unit for setting a third standard (first standard ≧ third standard ≧ second standard), an output signal of the seismograph, and each standard set in the standard setting unit. When the output signal of the seismograph exceeds the first standard, a nearest floor stop flag is set, and the output signal of the seismograph exceeds the second standard. In that case, the nearest floor stop flag is set only when the nearest floor stop flag has been set at least once, and the output signal of the seismograph is the third reference value. If the number exceeds the limit, it is unlikely that the nearest floor stop flag has been set so far. Only once, the judgment unit that sets the recovery prohibition flag, and when the nearest floor stop flag is set, the car is stopped at the nearest floor, and after the earthquake, it was judged that there was no abnormality by inspection. In this case, the elevator seismic control device is provided with: an operation control unit that causes the elevator to perform a recovery operation only when the recovery prohibition flag is not set and at the same time clears the nearest floor stop flag.