JPS61114982A - Control operating device for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an elevator control operation device for controlling an elevator during an earthquake.

[Background of the Invention] In the event of an earthquake, it is extremely important to prevent elevator disasters and return elevators to normal operation as quickly as possible. In recent years, many buildings have installed seismometers for elevator control operation. are beginning to be installed.

This seismograph for elevator control operation is generally installed in the machine room of the elevator on the top floor of a building or in the hoistway pit of the elevator on the bottom floor. When the limit is exceeded, various control operations are carried out accordingly.

Conventionally, this type of elevator-earthquake control operation was as follows:
For example, as described in Japanese Patent Publication No. 54-9375, a first detector with a low operating level, e.g. 0.02G, and a second detector with a high operating level, e.g. 0.2 to 0.4G, are used. When the first detector is activated, all the elevators are stopped, and if the second detector is not activated, the elevator operation is stopped after a predetermined period of time after the acceleration falls below a predetermined value. It is known that it can be automatically restored. According to this method, the first detector detects the occurrence of an earthquake (!) at an early stage and stops all elevators, improving safety in the event of an earthquake. If the second detector, which operates when there is a possibility of damage occurring, is not operating, the elevator will automatically resume operation after a predetermined period of time after the acceleration has fallen below a predetermined value, reducing the chance of suspension of service for maintenance. It is possible to reduce this and improve the service.

However, especially in modern high-rise buildings, the resonant frequency of elevator equipment such as buildings, lofts, and tail cords is low and the amplitude multiplier is large, so even earthquakes with accelerations below the operating level of the first detector have a predominant period. Elevators such as buildings and rope tail cords - If the resonance frequency of the equipment is close to the elevator, buildings and rope tail cords, etc.
It was discovered that the equipment vibrated at a large amplitude, causing damage.

Therefore, in order to prevent damage from earthquakes with low acceleration and dominant periods close to the resonant frequency of elevator equipment, it is necessary to lower the operating level of acceleration, and as a result, even small vibrations cause operation, resulting in an increase in the number of suspensions. However, there was a problem in that the service deteriorated.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to solve such problems and provide an elevator control operation device that is excellent in safety and serviceability even against various vibrations caused by earthquakes.

[Summary of the invention]

Whether or not damage is caused by an earthquake depends on the vibration behavior of the elevator equipment such as the tail cord in the building rope, but the vibration behavior is related not only to the amplitude of the earthquake vibration but also to the frequency of the vibration. In particular, it has been found that if the frequency components of the applied seismic motion have a large component close to the resonance frequency of the elevator equipment, the elevator equipment will vibrate with a large amplitude even if the amplitude of the earthquake vibration is small, causing damage.

The feature of the present invention was invented by elucidating the above-mentioned facts.In a device for controlling elevator operation during an earthquake, the controlled operation of elevators is carried out according to not only the magnitude of vibration but also its frequency. This is where I decided to do it.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a block diagram showing one embodiment of the present invention. An earthquake detector 1 is installed in the elevator equipment 6, which consists of one car C, a joint hook W1, a rope R, a tail cord T, etc., and the earthquake vibration detected by this earthquake detector 1 is detected by vibration detection of a specific frequency. Frequency-specific vibrations are detected by means 2 (for example a filter) and weighted according to the resonance frequency 3 of the elevator installation. Controlled operation command means 4 determines whether the weighted vibration magnitude has reached a standard value, and if it has reached a predetermined value, a control signal is sent to elevator control device 5 to enter controlled operation. According to this embodiment, it is sufficient to provide the same number of comparators and filters as the number of elevator facilities.
This has the effect of accurately capturing the vibration behavior of equipment.

FIG. 2 is a block diagram when a predetermined value of the control operation command means 40 is set according to the resonance frequency 3 of the elevator equipment. Earthquake detector installed in elevator equipment 61. The vibrations of the earthquake detected in the vibration detection means 2 are divided into each frequency by the specific frequency vibration detection means 2, and the control operation command means 4 is set for each frequency with the aim of resonant frequency of the engineering V-beta equipment, and nine standard values are set. If the control signal has been reached, a control signal is sent to the control device 5 and control operation begins. According to this embodiment, even if the resonance frequency of the elevator equipment changes, it can be handled simply by changing the reference value set in the control operation command means 4.

Figures 3 and 4 are layout diagrams of earthquake detectors.
The figure shows a case where seismic vibrations in two horizontal directions are detected, and the X-direction earthquake detector IX and the Y-direction earthquake detector IY are arranged in directions perpendicular to each other.

FIG. 4 is a layout diagram of an earthquake detector for detecting vertical directions as well, and is an earthquake detector LX for two horizontal directions.

This is an example in which the earthquake detector 1z is arranged in a direction perpendicular to IY.

FIG. 5 is a concrete configuration diagram of the present invention. child
) Here, the case of detecting in two horizontal directions will be explained, but if another set of detector filter and comparator is prepared for the Z direction, detection in three directions as shown in FIG. 4 is also possible.

First, the case of the embodiment shown in FIG. 1 will be explained.

Earthquake vibrations detected by the X-direction earthquake detector tXK are sent to X-direction filters 502 to 522 set according to the X-direction resonance frequency of each elevator facility, and the X-direction filters 502 The seismic vibrations passing through ~522 are passed through the X-direction comparators 503~523.50 set to two high and low V-pels for each filter.
4-524. Similarly, in the y-direction, earthquake vibrations detected by the y-direction earthquake detector IY are sent to y-direction filters 506 to 526, which are set according to the y-direction resonance frequency of each of the elevator equipment. The seismic vibrations passing through filters 506 to 526 in the y direction are set to two V-pels, high and low, for each filter.
The signals are sent to direction comparators 507-527, 508-528. Comparators 503 to 523, 507 set to high level
~527 OR circuit 509゜51
9 and outputs a control signal from the OR circuit 529 when a high-level earthquake is detected. The outputs of the comparators 504 to 524 and 508 to 528 set to low levels are also zero.
39 and 549, and an OR circuit 559 issues a control signal when a low level is detected. According to this embodiment, there is an advantage that the number of filters and comparators need only be provided as many as the number of elevator facilities.

Next, a case will be described in which the set value of the comparator, which is the determination means, is changed depending on the resonance frequency of the elevator equipment.

Earthquake vibrations detected by the X-direction earthquake detector IX are filtered through an X-direction filter 50 provided for each frequency component.
2 to 522 and separated into each frequency component by filters 502 to 522, the seismic vibrations are sent to filters 502 to 522 for each frequency component. Comparators 503-52
3. Sent to 504-524. Comparator 503-52
The outputs of 3,504 to 524 are logically summed by OR circuits 529 to 559 depending on whether the set value is high or low, and a control signal is generated.

The same applies to the X direction. According to this embodiment, it is necessary to provide as many filters and comparators as there are frequency components, but there is an effect that even if the resonant frequency of the elevator equipment changes, it can be handled by simply changing the set value of the comparator. .

FIG. 6 is a block diagram when frequency components of earthquake vibration are determined by the spectrum estimation method.

Images of earthquakes detected by the earthquake detectors IX and IY in the X and X directions are sent to the multiplexer 6 through bypass filters 603 and 604 in the X and X directions, respectively.
Enter 05. Next, it is sent to an A/D converter 606, converted into a digital signal, and sent to a CPU 607, which is a microprocessor. In the CPU 607, each frequency component is determined by the spectrum estimation method, and compared with the elevator equipment data stored in the elevator equipment data tape layer memory 611. A signal is emitted. 608 is a memory, 610 is a system/program memory, and 612 is an input data/calculation memory. According to this embodiment, by simply changing the program, it is possible to implement either a method of weighting frequency components or a method of changing judgment criteria, and even if the number of elevators and equipment increases, it can be handled by simply changing the program. effective.

FIG. 7 shows 70 charts for weighting frequency components, and Table 1 is a table of weighting coefficients for each frequency determined according to the resonance frequency of the elevator equipment. The case where frequency components are weighted according to FIG. 7 and Table 1 will be explained.

First, record earthquake vibration data from an earthquake detector (
701). Each frequency component is determined from the recorded earthquake vibration data using a spectrum estimation method (702). next,
The weighting determined according to the resonance frequency of the elevator equipment shown in Table 1 weights each frequency component using a coefficient (703).

Next, it is determined whether the frequency component of a certain frequency i exceeds the set value low (704). If it exceeds, then it is checked whether it exceeds the high set value (705), and if it does not exceed it, a low level control signal is issued (706), and if it exceeds it, a high level control signal is issued (707).

If the set value low is not exceeded in 704, check whether the entire frequency range has been checked (708)
If it is not checked, the process returns to 704; if it is checked, it is checked whether all directions have been checked; if it is not checked, the process returns to 702; if it is checked, the process returns to 701.

According to this embodiment, even if the resonant frequency of the elevator equipment changes depending on the position of the car, the weighting in Table 1 can be handled by changing the coefficients depending on the position of the car corner, etc. There is.

Figure 8 is a flowchart for setting the setting values that serve as criteria for judgment according to the resonant frequency of the elevator equipment, and Table 2 is a table of the setting values determined for each resonant frequency of the elevator equipment. be.

A case will be described in which the setting value is set according to the resonance frequency of the elevator equipment according to FIG. 8 and Table 2.

First, record earthquake vibration data from an earthquake detector (
901). Each frequency component is determined from the recorded earthquake vibration data using a spectrum estimation method (902). Next, within the resonant frequency range of the elevator equipment 1 (i = 1: tail cord, 1 = 2 ropes, i = 3: square seat, etc.) shown in Table 2, the settings are also shown in Table 2. Check whether the low value has been exceeded (903), and if it has exceeded the set value high, check whether it has exceeded the set value high (904), and if not, generate a low V-pel control signal (905), and if it has exceeded the high level control signal. A signal is issued (906).

If the set value is not exceeded in 903, check whether all elevator equipment has been checked (
907). If not, the process returns to 903, and if it has been checked, it is checked whether all directions have been checked (908). If it is not checked, the process returns to 902, and if it is checked, the process returns to 901. According to this embodiment, since the judgment is made for each part of the elevator equipment, it is possible to determine which part of the elevator equipment is dangerous. If the number of elevator facilities is small and the number of elevator facilities is small, the number of judgments will be reduced and the processing time will be shortened.

Ru.

〔Effect of the invention〕

According to the present invention, controlled operation is performed taking into account not only the magnitude of the amplitude of earthquake vibration but also its frequency, so it is possible to reduce the occurrence of disasters even in response to various vibrations, and there is no need for an elevator. This reduces the chances of the vehicle being stopped due to
Its safety and serviceability can be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the enopator control operation device according to the present invention, Fig. 2 is a block diagram of a pond according to the present invention, Figs. FIG. 6 is a block diagram of the present invention when frequency components are determined by the spectrum estimation method, and FIGS. 7 and 8 are flowcharts for explaining the operation of the embodiment of the present invention. 1, j! Ik seismic test 9, $-17<-,-□,. ,,,
, [) Rikago, IX...X-direction earthquake detector, IY...y-direction η 1 'f13z Deaf h 4 Zuuma 5 Mouth curvature 5 Go Q Osamu 8 Otsu

Claims (1)

[Claims] 1. In an elevator that is equipped with an earthquake detector and uses the output of the earthquake detector to perform control operation of the elevator, means for inputting the output of the earthquake detector to detect vibrations at a specific frequency; , and means for commanding the controlled operation according to the vibration of the specific frequency. 2. In claim 1, the specific frequency is composed of a plurality of different frequencies, the vibration detection means detects vibrations for each frequency, and the control operation command means detects vibrations for each frequency. An elevator control operation device configured to command controlled operation. 3. In claim 1, the earthquake detector is configured to output vibrations according to directions of earthquake, and to generate the vibration detection and the control operation command according to the outputs according to the directions. Device. 4. The elevator control operation device according to claim 1, wherein the specific frequency is set according to a resonance frequency of the elevator equipment. 5. The elevator control operation device according to claim 2, wherein the vibration detection means weights the vibration for each frequency according to the resonance frequency of the elevator equipment. 6. In claim 1 or 2, the controlled operation command means is configured to compare the vibration of the specific frequency with a predetermined value to instruct controlled operation, and the predetermined value is: Elevator control operation device set according to the resonance frequency of elevator equipment. 7. The elevator control operation device according to claim 4, 5, or 6, wherein the resonance frequency of the elevator equipment is set for each component constituting the equipment. 8. An elevator control operation device according to claim 4, 5, or 6, wherein the resonance frequency of the elevator equipment is changed depending on the position of the elevator car or the position of a counterweight. . 9. In claim 1, the vibration detection means determines frequency components of vibration from the output of the earthquake detector by a spectrum estimation method, and weights each frequency component according to the resonance frequency of the elevator equipment. An elevator control operation device configured to detect vibrations for each frequency component. 10. The elevator control operation device according to claim 1, wherein the vibration detection means is constituted by a filter set to a specific frequency.