JPH06633B2 - Elevator control operation device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a control operation device for controlling an elevator during an earthquake.

[Background of the Invention] It is extremely important to prevent a disaster caused by an elevator during an earthquake and to return the elevator to a normal state as quickly as possible. Therefore, many buildings are equipped with elevator seismometers for control operation. Is becoming popular.

This elevator seismometer for control operation is generally installed in the machine room of the elevator on the top floor of the building or in the pit of the elevator hoistway on the bottom floor, and the acceleration of the floor is a reference value. When it exceeds, each control operation is performed accordingly.

However, especially in high-rise buildings, even if the earthquake acceleration is small and does not exceed the reference value, if the frequency of the earthquake is close to the natural frequency of the building, the building may vibrate with a large amplitude and cause a disaster. .

As an example of elevator control operation using a physical quantity other than acceleration, as described in Japanese Utility Model Publication No. Sho 49-22106, there is one in which control operation is performed by the amount of displacement that an earthquake gives to a building in which an elevator is installed. . According to this method, since the control operation is performed by the displacement of the building, even if the building vibrates with a large amplitude without the acceleration reaching the reference value, the control operation can be started and a disaster can be prevented.

However, in order to detect the displacement in an arbitrary direction, there is a drawback that the circuit becomes complicated because it is necessary to obtain the root mean square value of the detection values of the detectors that detect the displacement in the directions orthogonal to each other.

[Object of the Invention]

An object of the present invention is to provide an elevator control operation device that performs control operation against an earthquake that may cause a disaster even if the acceleration is less than a reference value when the elevator is controlled during an earthquake. It is in.

[Outline of Invention]

A feature of the present invention is that, in an elevator control operation device that controls an elevator during an earthquake, a square value of speed is used as a detection amount for performing control operation, and even if the acceleration is less than a reference value, a disaster may occur. In the event of a certain earthquake, the control operation can be performed.

By the way, if the energy that an object such as elevator equipment or a building receives by an earthquake is W (J), then W = 1 / 2mv ² ……… (1) where m: mass of the object (Kg) v: object Therefore, the square value v ² of the velocity v is proportional to the energy per unit mass. Therefore, it is understood that whether or not destructive energy is applied to the device can be determined by using the square value of the velocity.

Example of Invention

Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.

FIG. 1 shows an embodiment of the present invention. The x-direction component of the speed detected by the x-direction speed detector 1 is the x-direction amplifier 2
The signal is amplified by, then squared by the multiplier 3 in the x direction and sent to the adder 7. Further, the y-direction component of the speed detected by the y-direction speed detector 4 is amplified by the y-direction amplifier 5,
Further, it is squared by the multiplier 6 in the y direction and sent to the adder 7. The adder 7 adds the square value of the x-direction component of the speed sent from the multiplier 3 in the x-direction and the square value of the y-direction component of the speed sent from the multiplier 6 in the y-direction, and within the horizontal plane. Compute the squared value of the velocity in any direction of. Reference numerals 8 and 9 are comparators that issue control signals when the square value of the velocity in an arbitrary direction in the horizontal plane sent from the adder 7 reaches a set value.

2 and 3 are explanatory views of the present invention. FIG. 2 is a layout of the speed detector. The speed detector 1 in the x direction and the speed detector 4 in the y direction are arranged at right angles to each other.

FIG. 3 is a diagram showing values detected by the velocity detector 1 in the x direction and the velocity detector 4 in the y direction when a vibration of v is applied. When an input is a vibration v having an inclination of an angle θ from the x-axis which is the detection direction of the speed detector 1 in the x direction, the amount detected by the speed detector 1 in the x direction is v.
_When the amount detected by the velocity detector 4 in the _x and y directions is V _y , v _x = | v | cos θ (2) v _y = | v | sin θ (3) When v _x and v _y are each squared and added, v _x ² + v _y ² = (| v | cos θ) ² + (| v | sin θ) ² = | v | ² (sin ² θ + cos ² )
(4) Here, sin ² θ + cos ² θ = 1, so v _v ² + v _y ² = | v | ² = v ² ... (5) Therefore, the velocity in any direction in the horizontal plane To obtain the squared value, the outputs of the x-direction speed detector 1 and the y-direction speed detector 4 may be squared and then added.

FIG. 4 shows an output example when a sinusoidal wave having the same phase and the same amplitude is input to each of the x-direction speed detector 1 and the y-direction speed detector 4. (a) is the output of the speed detector 1 in the x direction,
(b) is the output of the multiplier 3 in the x direction, (c) is the output of the speed detector 4 in the y direction, (d) is the output of the multiplier 6 in the y direction, and (e) is the output of the adder 7. is there.

The example in which the control operation is performed by using the square value of the velocity in an arbitrary direction in the horizontal plane has been described above. However, as shown in FIG. 5, three detectors are arranged at right angles to each other, and an amplifier / multiplier is provided. If three sets are also used, control operation can be performed by the square value of the velocity in any direction within the three-dimensional space. 1
Reference numeral 0 is a velocity detecting device in the z direction.

〔The invention's effect〕

According to the present invention, it is possible to realize an elevator control operation device capable of reducing disasters caused by an earthquake and ensuring sufficient safety even when an earthquake occurs.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention, FIGS. 2 and 5 are arrangement diagrams of speed detectors, and FIGS. 3 and 4 are operation explanatory diagrams of an embodiment of the present invention. 1 ... x direction velocity detector, 2 ... x direction amplifier, 3 ... x
Direction multiplier, 4 ... y direction speed detector, 5 ... y direction amplifier, 6 ... y direction multiplier, 7 ... adder, 8,9 ... comparator, 10 ... z direction displacement detector.

Claims (1)

[Claims] 1. A device for controlling an elevator during an earthquake to detect the speed of the elevator or a building provided with the elevator caused by the earthquake, and thus a set of detectors capable of detecting speeds in directions perpendicular to each other. And means for calculating the squared value of the velocity in an arbitrary direction by squaring the outputs of the respective detectors and adding them, and means for instructing the control operation when the squared value of the velocity exceeds a predetermined value. An elevator control operation device characterized by comprising: