JPH0325755B2 - - Google Patents

Description

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

[Background of the invention]

Prevent disasters caused by elevators during earthquakes, and
It is extremely important to restore the elevator to normal operation as quickly as possible; therefore,
Many buildings are equipped with seismometers for elevator control operations.

Seismometers for elevator control operation are generally located in the elevator machine room on the top floor of the building, or
It is installed in the pit of the hoistway of the elevator on the lowest floor, and performs various control operations when the acceleration of the floor exceeds a certain standard value.

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

An example of controlled operation of an elevator using physical quantities other than acceleration is as described in Japanese Utility Model Publication No. 49-22106, in which controlled operation is performed based on the displacement value that an earthquake applies to the building in which the elevator is installed. There is something. According to this method, controlled operation is performed based on the displacement of the building, so even if the acceleration does not reach a standard value and the building vibrates with a large amplitude, controlled operation can be performed to prevent disasters.

However, since the detector has directivity, it is actually difficult to detect the shaking of a building in all directions under the same conditions in all directions, even if the shaking is of the same degree. , the detected value often changes when the direction changes. Therefore, the detected value changes each time the direction of displacement of the building changes, making it impossible to accurately detect displacement in any direction and outputting an appropriate control operation signal.

[Object of the Invention] An object of the present invention is to provide an elevator control operation device that can accurately detect displacement in any direction and output an appropriate control operation signal.

[Summary of the Invention] The present invention is characterized by an elevator control operation device that detects shaking of a building in which an elevator is installed and controls the elevator based on the detected value.
a set of detectors that respectively detect displacements of the building in directions perpendicular to each other; a multiplier that squares the output of each of these detectors; and an adder that adds the squared values from each of these multipliers. , and means for outputting a control operation signal when the output of the adder exceeds a predetermined value.

Because of the above configuration, the displacement d in the direction sandwiched between the X direction and the Y direction is dx=
d cos θ, detected by the Y-direction detector as dY = d sin θ, and by adding these squared values, dx ² + dY ² = (|d|cos θ) ² + (|d|sin θ) ² =
|d| ² (sin ² θ+cos ² θ)...(1).

Here, since sin ² θ+cos ² θ=1, equation (1) is
dx ² + dY ² = d ² , and the magnitude of displacement in all directions can be accurately determined using the X-direction detector and Y-direction detector without performing troublesome square root calculations, and the control operation signal can be output. By simply setting a value equivalent to the square value as the predetermined value that becomes the standard when
It is possible to perform controlled operation by outputting a controlled operation signal that matches the displacement.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail using illustrative embodiments.

FIG. 1 shows one embodiment of the present invention. The x-direction component of the displacement detected by x-direction displacement detector 1 is x
The signal is amplified by an amplifier 2 in the x direction, squared by a multiplier 3 in the x direction, and sent to an adder 7. Also,
The y-direction component of the displacement detected by the y-direction displacement detector 4 is amplified by the y-direction amplifier 5, and further, the y-direction component is amplified by the y-direction amplifier 5.
The signal is squared by a direction multiplier 6 and sent to an adder 7.
The adder 7 receives the square value of the x-direction component of the displacement sent from the x-direction multiplier 3 and the y-direction multiplier 6.
The square value of the y-direction component of the displacement sent from is added, and the square value of the displacement in any direction in the horizontal plane is calculated. 8 and 9 are a set first predetermined value (a value obtained by squaring the reference value), which is a square value of displacement in an arbitrary direction in the horizontal plane sent from the adder 7;
This is a comparator that issues a control signal when each reaches a predetermined value (a value obtained by squaring the reference value).

FIGS. 2 and 3 are explanatory diagrams of the present invention. FIG. 2 is a layout diagram of the displacement detector. The displacement detector 1 in the x direction and the displacement detector 4 in the y direction are arranged at positions perpendicular to each other.

FIG. 3 is a diagram showing the values detected by the displacement detector 1 in the x direction and the displacement detector 4 in the y direction when a vibration d occurs. When there is an input vibration d having an angle θ from the x-axis, which is the detection direction of the displacement detector 1 in the x direction, the amount detected by the displacement detector 1 in the x direction is d _X , and the displacement in the y direction is If the amount detected by the detector 4 is d _Y , then d _X =|d|cosθ... (2) d _Y =|d|sinθ... (3). _When ^d _X and d _Y ^{are each} squared and added together ^, _d
= | d | ² (sin ² θ + cos ² θ) ... (4) Here, since sin ² θ + cos ² θ = 1, d _X ² + d _Y ² = | d | ² = d ² ... (5) Therefore, in order to obtain the square value of displacement in any direction in the horizontal plane, it is sufficient to square the respective outputs of the displacement detector 1 in the x direction and the displacement detector 4 in the y direction, and then add them together.

FIG. 4 shows an example of the output when a sine wave having the same phase and amplitude is applied to each of the x-direction displacement detector 1 and the y-direction displacement detector 4. a is the output of the displacement detector 1 in the x direction, b is the output of the multiplier 3 in the x direction, c is the output of the displacement detector 4 in the y direction, d is the output of the multiplier 6 in the y direction, and e is the adder This is the output of 7.

Above, we have explained an example in which controlled operation is performed using the square value of displacement in an arbitrary direction in the horizontal plane.
As shown in FIG. 5, by arranging three detectors at right angles to each other and using three sets of amplifiers and multipliers, control operation can be performed using the square value of displacement in any direction in three-dimensional space. 10 is a displacement detection device in the Z direction.

[Effects of the Invention] As described above, according to the present invention, the magnitude of displacement in all directions can be accurately measured using detectors arranged in directions that intersect at right angles, without providing a troublesome square root calculation means. This has the effect of making it possible to perform controlled operation that matches the magnitude of the displacement.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of an embodiment of the present invention, FIG.
FIG. 5 is a layout diagram of a displacement detector, and FIGS. 3 and 4 are operation explanatory diagrams of an embodiment of the present invention. 1... Displacement detector in x direction, 2... Amplifier in x direction, 3... Multiplier in x direction, 4... Displacement detector in y direction, 5... Amplifier in y direction, 6... Y direction Multiplier, 7... Adder, 8, 9... Comparator, 1
0...Z-direction displacement detector.

Claims (1)

[Claims] 1. In an elevator control operation device that detects the shaking of a building in which an elevator is installed and controls the elevator based on this detected value, a set of detections that respectively detect displacements of the building in directions that intersect at right angles to each other. a multiplier that squares the output of each of these detectors, an adder that adds the squared values from each of these multipliers, and when the output of this adder exceeds a predetermined value, a control operation signal is sent. 1. An elevator control operation device comprising: means for outputting an output.