JP6464843B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an apparatus for detecting the position of an elevator car traveling in a hoistway, and more particularly to an apparatus for detecting the position of a car at the upper and lower ends of the hoistway.

As a device for detecting the position of an elevator car traveling in a hoistway, a configuration in which a number of position sensors are arranged in the hoistway and a cam for operating the position sensor is installed in the car (see Patent Document 1) ) This device detects the position of the car by turning the position sensor on and off each time the car passes the position of the position sensor.
However, this apparatus increases the number of position sensors and increases the number of position sensor wiring cables.

In view of this, it is conceivable that a photoelectric sensor is provided in the car and a shielding plate (plate) for blocking the optical axis of the photoelectric sensor is disposed in the hoistway (see, for example, Japanese Patent Application No. 2015-018169).
This apparatus will be described with reference to the drawings. 2 is a diagram showing the arrangement of the plates in the hoistway, FIG. 3 is a diagram showing the main part of the car ceiling, FIG. 4 is a detailed explanatory view of the plates, FIG. 5 is a table for determining the position of the car, FIG. 6 is a flowchart showing the operation, and FIG. 7 is an explanatory diagram of the positional relationship of each plate.

In the figure, 1 is a hoistway in which the car 2 moves up and down, A1 to A6 are A phase plates arranged in the hoistway 1, similarly B1 to B6 are B phase plates, and Z1 to Z6 are Z phase plates.
4 is a photoelectric sensor installed in the upper part of the car 2, the photoelectric sensor 4a for the A phase plates A1 to A6, the photoelectric sensor 4b for the B phase plates B1 to B6, and the photoelectric sensor 4z for the Z phase plates Z1 to Z6. It has. Reference numeral 5 denotes a pair of guide rails for guiding the raising and lowering of the car 2.

  As shown in FIG. 4, a gap portion G is opened in the A-phase and B-phase plates, and the upper and lower portions are shielding portions S that are plate bodies. The shielding portion S blocks the optical axis of the photoelectric sensor 4, and the gap portion G can pass the optical axis of the photoelectric sensor 4, and both are alternately arranged in the vertical direction, and the length of the shielding portion S and the gap portion G is The length L is the same.

As shown in FIG. 2, on the upper part of the hoistway 1, in order from the top, three plates A1 with a gap G, two plates A2 with a gap G, and a plate A3 with one gap G are arranged. Has been.
On the other hand, in the lower part of the hoistway 1, in order from the top, two plates A4 with a gap G, three plates A5 with a gap G, and four plates A6 with a gap G are arranged. As described above, the closer to the upper and lower ends of the hoistway 1, the larger the number of the gaps G is arranged, and the lower plate has one more gap than the upper part.

  The B-phase plates B1 to B6 are also configured and arranged in the same manner as the A-phase plates A1 to A6. However, in the upper part of the hoistway 1, the hoistway is arranged lower by L / 2 than the A-phase plate. In the lower part of 1, it is arranged 3 L / 2 higher than the A-phase plate.

The Z-phase plates Z1 to Z6 are plates having no gaps, and are longer than the corresponding A-phase and B-phase plates. The upper ends thereof extend upward from the corresponding A-phase and B-phase plates, and the lower ends thereof are the corresponding A-phases. , Extends downward from the B-phase plate.
When the photoelectric sensor 4 detects the upper end or the lower end (edge) of the shielding portion S, it generates a pulse signal, and performs car position detection based on this pulse signal.

  Further, the hoistway 1 is divided into a number of sections with reference to the upper and lower ends of the Z-phase plates Z1 to Z6.

  As shown in FIGS. 2 and 5, section 1 is from the upper end of the plate Z1 to the upper end of the hoistway 1, section 2 is from the upper end of the plate Z1 to the upper end of the plate Z2, and so on. A section 7 extends to the lower end of the road 1. Further, the section 11 extends from the lower end of the plate Z1 to the upper end of the hoistway 1, the section 12 extends from the lower end of the plate Z1 to the lower end of the plate Z2, and the section 17 extends from the lower end of the plate Z6 to the lower end of the hoistway 1. It is said.

  These sections also show the direction of travel of the car 2. That is, when it is determined that the car 2 that has passed through each Z-phase plate has reached the sections 1 to 6, the car 2 is rising, and the car 2 that has passed through each Z-phase plate has reached the sections 12 to 17. When it is determined that the car 2 is descending.

  Here, if the distance between the upper and lower sides of each Z-phase plate is D [m], the distance D satisfies Expression (1).

  Further, the length L [m] of the shielding part S and the gap part G is expressed by Equation (2).

Next, the flowchart of FIG. 6 will be described.
First, when the photoelectric sensor 4 detects the edge of any one of the A-phase, B-phase, and Z-phase plates and generates a pulse signal (A, B, or Z), the signal processing unit (not shown) outputs the pulse signal. Is received (step S1).

  Next, in step S2, the number P of pulse edges is increased or decreased by signals A and B from the A phase and the B phase. The initial value of P is 0. In this step, it is examined whether Condition 1-1 and Condition 1-2 are satisfied.

In the expression of the condition 1-1 in FIG. 6, the upper row indicates that when the shielding part S is detected in any of the A-phase plates (rising edge of the signal A), the shielding part S is detected in the B-phase plate. It shows the state.
The lower row shows a state in which the shielding portion S is not detected in the B-phase plate when the detection of the shielding portion S is completed in any of the A-phase plates (the falling edge of the signal A). If either of these two conditions is satisfied, the pulse edge number P is increased to P + 1.

In the formula of condition 1-2 in FIG. 6, the upper row indicates that when the shielding part S is detected in any of the A phase plates (rising edge of the signal A), the shielding part S is detected in the B phase plate. Indicates no state.
The lower row shows a state in which the shielding portion S is detected in the B-phase plate when the detection of the shielding portion S is completed in any of the A-phase plates (the falling edge of the signal A). If either of these two conditions is satisfied, the number P of pulse edges is reduced to P-1.

  If neither of the conditions 1-1 and 1-2 is satisfied, the pulse edge number P remains unchanged (ELSE), and the process proceeds to the next step S3.

  In step S3, the plate arrangement section is determined based on the signals A, B, and Z from the A phase, the B phase, and the Z phase. In this step, it is examined whether Condition 2-1 and Condition 2-2 are satisfied.

  In the condition 2-1 in FIG. 6, when the signal A is detected and the signal B is not detected in the state where the photoelectric sensor 4 is detecting the signal Z (X = 1), that is, the signal A is first. When detected, “identify first received signal as A”, determine “Type = A”, and return X to 0.

  In the condition 2-2 in FIG. 6, when the signal B is detected and the signal A is not detected in the state where the photoelectric sensor 4 is detecting the signal Z (X == 1), that is, the signal B is first. When detected, “identify first received signal as B”, determine “Type = B”, and return X to 0.

  If neither of the conditions 2-1 and 2-2 is satisfied, the process proceeds as it is (ELSE) and the process proceeds to the next step S4.

  In step S4, the signal Z from the Z phase is determined. In this step, it is examined whether or not the conditions 3-1 to 3-3 are satisfied.

  In the equation of condition 3-1 in FIG. 6, when the photoelectric sensor 4 detects the signal Z (rising edge of the signal Z), “X = 1” is set.

  Further, in the equation of condition 3-2, when the photoelectric sensor 4 finishes detecting the signal Z (falling of the signal Z), the position of the car is determined. The position of this car is whether the car 2 exists in any one of the sections 1 to 6 and the sections 12 to 17 in FIG. Thereafter, the pulse edge number P is reset (P = 0) and “X = 0”.

  The expression of Condition 3-3 indicates that the car 2 does not detect the Z-phase plate and the signal Z is not falling. When this condition 3-3 is satisfied, the pulse edge number P is reset (P = 0) and “X = 0”.

If none of the conditions 3-1 to 3-3 is satisfied, the process proceeds to the next step S5 as it is (ELSE).
In step S5, which section the car 2 is in is output.

Next, the flowchart of FIG. 6 will be described using a specific example.
FIG. 7 is a detailed view of the plate A3, B3, and Z3 portion of FIG. 2, and a case where the car 2 is raised will be described.

  When the car 2 is below the plate Z3, the signals A, B, and Z are not generated, so step S1 is not executed, so P, X, and Type are in the initial state. That is, P = 0, X = 0, and Type = unknown.

When the car 2 rises and reaches a1, the signal Z rises and becomes True. However, since the signals A and B remain False, steps S2 and S3 are both ELSE. In step S4, since condition 3-1 is satisfied, X = 1.
Therefore. P = 0, X = 1, Type is unknown.

When the car 2 rises and reaches a2, the signal B rises and becomes True, but since the signal A remains False, step S2 becomes ELSE. Since Step S3 satisfies Condition 2-2, Type = B and X = 0. Further, since the signal Z maintains True, step S4 becomes ELSE.
Therefore, P = 0, X = 0, and Type = B.

Thereafter, until the signal Z falls, that is, until the car 2 reaches a10, the signal Z remains True, so step S4 is ELSE. Therefore, since X = 0 is also maintained, step S3 is also ELSE.
Therefore, X = 0 and Type = B are maintained until the car 2 reaches a10.

When the car 2 rises and reaches a3, the signal A rises to True and the signal B remains True, so the step S2 satisfies the condition 1-1 and P = 1.
Therefore, P = 1, X = 0, and Type = B.

When the car 2 rises and reaches a4, the signal B falls and becomes False, and the signal A maintains True, so the step S2 is ELSE.
Therefore, P = 1, X = 0, and Type = B.

When the car 2 rises and reaches a5, the signal A falls and becomes False, and the signal B maintains False, so the step S2 satisfies the condition 1-1 and P = 2.
Therefore, P = 2, X = 0, and Type = B.

When the car 2 rises and reaches a6, the signal B rises and becomes True, and the signal A maintains False, so step S2 is ELSE.
Therefore, P = 2, X = 0, and Type = B.

When the car 2 rises and reaches a7, the signal A rises and becomes True, and the signal B maintains True. Therefore, Step S2 satisfies the condition 1-1, and P = 3.
Therefore, P = 3, X = 0, Type = B.

When the car 2 rises and reaches a8, the signal B falls and becomes False, and the signal A maintains True, so step S2 is ELSE.
Therefore, P = 3, X = 0, and Type = B.

When the car 2 rises and reaches a9, the signal A falls and becomes False, and the signal B maintains False, so Step S2 satisfies the condition 1-1 and P = 4.
Therefore, P = 4, X = 0, and Type = B.

When the car 2 rises and reaches a10, the signal Z falls and becomes False, but since the signals A and B remain False, both steps S2 and S3 are ELSE. In step S4, since the condition 3-2 is satisfied, the position of the car 2 is determined. At this time,
Since P = 4 and Type = B, it can be seen from FIG. 5 that the car 2 is in the section 3 and is rising.

Thereafter, the number of pulse edges is reset, P = 0 and X = 0, and the car position section is output as “section 3”.
As described above, the position and driving direction of the car 2 can be detected.

In FIG. 7, when the car 2 descends, it moves from a10 to a1 in the same manner as described above, and detailed description is omitted, but P = −4, Type = A. Therefore, it can be seen from FIG. 5 that the car 2 is in the section 14 and is descending.
Similarly, the position and driving direction of the car 2 can be detected for the other upper plates A1, A2, B1, B2, Z1, and Z2.

  Furthermore, although detailed description is abbreviate | omitted also about the plate arrange | positioned at the lower part of the hoistway 1, the position and driving | running | working direction of the cage | basket | car 2 are detectable like the above.

  For example, when the car 2 moves up the plate A4, B4, Z4 portion of FIG. 2, detailed explanation is omitted, but P = 4, Type = A, and from FIG. You can see that

Further, when the car 2 moves down the plate A4, B4, Z4 portion of FIG. 2, the detailed explanation is omitted, but P = −4, Type = B, and the car 2 is in the section 15 from FIG. You can see that it is descending.
Similarly, the position and driving direction of the car 2 can be detected for the other lower plates A5, A6, B5, B6, Z5 and Z6.

Further, even when the car 2 is stopped at the plate position (within the range of the Z-phase plate) and then operated in the same direction or the reverse direction, the position and the operating direction of the car 2 can be detected in the same manner as described above.
In the above description, the A-phase and B-phase plates have three types including one to three or two to four gaps G, but are not limited to three. Further, the plate having the smallest gap portion among the A-phase and B-phase plates can have zero gap portions G.

  In the above description, the number of gaps G is larger in the A-phase and B-phase plates below the hoistway 1 than in the upper A-phase and B-phase plates. The gap G of the upper A-phase and B-phase plates can be made larger than the gap G of the lower A-phase and B-phase plates of the hoistway 1. Furthermore, a plate can also be arrange | positioned only at the lower end part side or upper end part side of the hoistway 1. Further, the height L of the gap portion G and the shielding portion S may not be the same as long as the edge can be reliably detected.

Japanese Patent No. 5355597

  In the prior art described above, the position and the driving direction of the car 2 can be detected by three types of plates of A phase, B phase, and Z phase. In the elevator, in addition to the above three types of plates, A detection plate for detecting the landing stop position and the door opening / closing thorn may be installed.

  For example, as shown in FIG. 8, detection plates C1 to C3 (hereinafter, detection plates C1 to C3 and the like are collectively referred to as C) at the positions of the landings F1 to F3 (hereinafter, the halls F1 to F3 and the like are collectively referred to as F) on each floor. May be placed. Then, as shown in FIG. 9, a photoelectric sensor 6 for detecting the detection plate C is installed in the car 2. In FIG. 8, the central part and the lower part of the hoistway 1 are not shown, but the landing F and the plate C are arranged in the same manner as the upper part of the hoistway 1.

  Here, the photoelectric sensor 6 is a sensor that detects that the car 2 has landed on the landing F, a sensor that detects whether the car 2 has landed from above or below, and the car 2 can open and close the door of the landing F. Since three types of sensors for detecting whether or not they are in a zone are provided side by side in the vertical direction, there are three optical axes. Then, by detecting the detection plate C by the optical axis of each sensor, the landing position and the landing direction of the car 2 are detected.

As described above, since a large number of photoelectric sensors 4 and 6 are installed on the ceiling portion of the car 2, there is a possibility of interference with other devices such as the guide rail 5. There is a problem that it may be difficult to install 6.
The present invention aims to solve the above-described problems.

The present invention has a plurality of photoelectric sensors installed in an elevator car and a plurality of plates installed in a hoistway so as to face the photoelectric sensors, and the plates are optical axes from the photoelectric sensors. And a shielding portion that shields the optical axis from the photoelectric sensor are alternately arranged in the vertical direction of the hoistway, and the first includes a plurality of types having different numbers of the void portions. A seed plate, a second type plate, and a third type plate without a gap, and while one photoelectric sensor of the photoelectric sensors detects the third type plate, The other photoelectric sensor is installed in the hoistway to detect the ETS that can detect the first type plate and the second type plate, and the landing stop position of the car and the door opening / closing zone. Detection pre And a photoelectric sensor installed in a cage for detecting the detection plate, each of the first to third plates is provided with an interval in the thickness direction. In the plane cross section of the hoistway, the detection plate is positioned so as to overlap with either the first type plate or the second type plate, and at a height at which the one photoelectric sensor does not detect the third type plate. The plurality of photoelectric sensors include an ETS photoelectric sensor that detects either the first type plate or the second type plate and the third type plate, a photoelectric sensor that detects the detection plate, An ETS photoelectric sensor for detecting either the first type plate or the second type plate as a single photoelectric sensor, and the E The photoelectric sensor and the combined photoelectric sensor S is characterized in that it is arranged in the axial direction of the optical axis.

In the invention, it is preferable that the detection plate is installed such that the relative position of the corresponding floor with respect to the landing is common to each floor .

Furthermore, the present invention is characterized in that the dual-purpose photoelectric sensor has a configuration in which three types of sensors are arranged in the vertical direction .

Furthermore, the present invention is characterized in that when the combined photoelectric sensor is used as a photoelectric sensor for ETS, only one of the three types of sensors is used .

  According to the present invention, the number of photoelectric sensors installed in the car can be reduced.

It is a figure which shows arrangement | positioning of the plate in the hoistway by embodiment of this invention. It is a figure which shows arrangement | positioning of the plate in the conventional hoistway. It is a figure which shows the principal part of the conventional cage | basket ceiling part. It is detail explanatory drawing of the conventional plate. It is a table | surface for determining the position of the conventional cage | basket | car. It is a flowchart which shows the conventional operation | movement. It is positional relationship explanatory drawing of each conventional plate. It is a figure which shows arrangement | positioning of the plate in the conventional hoistway. It is a figure which shows the principal part of the conventional cage | basket ceiling part.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the arrangement of plates in a hoistway. As in FIG. 8, in FIG. 1, the central part and the lower part of the hoistway 1 are not shown, but a landing and a plate are arranged as in the upper part of the hoistway 1.

  In the present embodiment, the detection plate C is arranged so as to overlap the A-phase plates A1 to A6 in the plane cross section of the hoistway 1. As a result, the photoelectric sensor 6 is also used as the photoelectric sensor 4a for the A phase plates A1 to A6 as shown in FIG. Accordingly, as shown in FIG. 9, it is not necessary to install the photoelectric sensor 6 in another place, so that the installation of the photoelectric sensor in the car 2 is facilitated.

The A-phase, B-phase, and Z-phase plates and the photoelectric sensors 4 (4a, 4b, 4z) are used for the terminal floor forced reduction device (ETS), and thus the photoelectric sensors 4a, 4b, 4z. Each has an optical axis. On the other hand, the photoelectric sensor 6 has three optical axes in the vertical direction.
Therefore, the photoelectric sensor 4a for the A-phase plates A1 to A6 that is also used for the detection plate C uses a configuration in which three types of sensors are arranged in the vertical direction in the same manner as the photoelectric sensor 6. And when using it for A phase plates A1-A6, only one of the three types of sensors is used.

  Here, a method of switching the photoelectric sensor 4a between ETS and detection of the car landing position will be described. As already described with reference to FIGS. 6 and 7, the car position detection operation as ETS is performed by first detecting the edges of the Z-phase plates Z1 to Z6, the signal Z rises to True, and finally the Z-phase. This is a period from when the edges of the plates Z1 to Z6 are detected until the signal Z falls and becomes False. That is, the photoelectric sensor 4z is detecting the Z-phase plates Z1 to Z6. In other words, the Z-phase plate is a plate that detects that the ETS can perform the car position detection operation.

Therefore, the photoelectric sensor 4a is used for ETS while the photoelectric sensor 4z detects the Z-phase plates Z1 to Z6, and the car landing position or the like while the photoelectric sensor 4z does not detect the Z-phase plates Z1 to Z6. It will be used for detection.
That is, the detection plate C is disposed avoiding the height at which the Z-phase plates Z1 to Z6 are detected. In other words, the detection plate C is arranged at a position where the ETS does not perform the car position detection operation.

If the detection plate C interferes with the A-phase plates A1 to A6 due to the situation at the site, the arrangement of the detection plate C is given priority. For example, in the case of FIG. 8, if the detection plate C is arranged so as to overlap the A-phase plates A1 to A6 in the plane cross section of the hoistway, the detection plate C and the A-phase plate A1 interfere with each other. Therefore, in FIG. 1, the A-phase plate A1, the B-phase plate B1, and the Z-phase plate Z1 are arranged at a position slightly higher than the position of FIG.
This is because the detection plate C needs to be installed at an accurate position so that the car 2 stops landing at the landing F, whereas in the case of ETS, even if there is a slight change in position, there is a large practical problem. It is because it does not become.

  Further, as can be seen from FIG. 4, the lengths of the A-phase plates A1 to A6 and the like are integer multiples of L, and this L is represented by the above formula (2). Therefore, L can be reduced by increasing the sampling frequency, that is, the length of the A-phase plate can be shortened. Therefore, interference with the detection plate C can be avoided also by increasing the sampling frequency.

  As described above, according to the present embodiment, the number of photoelectric sensors installed in the car 2 can be reduced.

  In the above-described embodiment, the photoelectric sensor 4a that is also used for the detection plate C uses a configuration in which three types of sensors are arranged in the vertical direction like the photoelectric sensor 6, and other photoelectric sensors. 4b and 4z use a single optical axis, but in order to unify the types of photoelectric sensors, all photoelectric sensors are of the same type as the photoelectric sensor 6, with three types of sensors arranged in the vertical direction. When used for ETS, only the optical axis of a necessary sensor can be used.

Moreover, in the said embodiment, although the photoelectric sensor 4a and the photoelectric sensor 6 were combined, the photoelectric sensor 4b and the photoelectric sensor 6 can also be combined. That is, it is also possible to arrange the detection plate C so as to overlap the B phase plates B1 to B6 in the plane cross section of the hoistway instead of the A phase plates A1 to A6.
Further, the photoelectric sensors 4 and 6 use a transmissive sensor in which the projector and the receiver are separated, a reflector as a plate, and a reflective sensor in which the projector and the receiver are integrated as a photoelectric sensor. The optical axis may be reflected by a reflector (plate) and received by a light receiver.

1 hoistway 2 basket
4,6 Photoelectric sensor 5 Guide rail A1 to A6 A phase plate B1 to B6 B phase plate C, C1 to C3 Detection plate F, F1 to F3 landing G Gap part S Shielding part Z1 to Z6 Z phase plate

Claims (4)

A plurality of photoelectric sensors installed in an elevator car, and a plurality of plates installed in a hoistway so as to face the photoelectric sensors;
The plate is
The gap portion through which the optical axis from the photoelectric sensor passes and the shielding portion that shields the optical axis from the photoelectric sensor are alternately arranged in the vertical direction of the hoistway, and the number of gap portions is It includes a first type plate and a second type plate made of a plurality of different types, and a third type plate without a gap,
While one photoelectric sensor of the photoelectric sensors detects the third type plate, the other photoelectric sensor of the photoelectric sensors can detect the first type plate and the second type plate. ETS and
In what has a detection plate installed in the hoistway to detect the landing stop position of the car and the door opening and closing zone and a photoelectric sensor installed in the car to detect the detection plate,
Each of the first to third types of plates is provided with an interval in the thickness direction.
In the plane cross-section of the hoistway, the detection plate is positioned so as to overlap with either the first type plate or the second type plate, and the one photoelectric sensor is arranged at a height that does not detect the third type plate. ,
The plurality of photoelectric sensors are:
An ETS photoelectric sensor for detecting either the first type plate or the second type plate and the third type plate;
A photoelectric sensor that detects the detection plate, and a dual-purpose photoelectric sensor that combines the photoelectric sensor for ETS that detects either the first type plate or the second type plate with one photoelectric sensor,
The ETS photoelectric sensor and the dual-purpose photoelectric sensor are arranged side by side in the axial direction of the optical axis.   The elevator apparatus according to claim 1, wherein the detection plate is installed such that a relative position of the corresponding floor with respect to the landing is common to each floor.   The elevator apparatus according to claim 1 or 2, wherein the dual-purpose photoelectric sensor has a configuration in which three types of sensors are arranged in the vertical direction. The combined photoelectric sensor, when used as a photoelectric sensor for the ETS, the elevator apparatus according to claim 3, characterized in that use only one kind of sensor of the three sensors.

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