JP2018111555A - Elevator position detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator position detecting device capable of discriminatingly detecting two different types of places in a hoistway with a simple configuration.SOLUTION: The elevator position detecting device is provided with: a first part 11 to be detected; a second part 12 to be detected; a pair of first detection parts 21A and 21B; and a second detection part 22. The first part 11 to be detected and the second part 12 to be detected are two types of parts to be detected installed in a hoistway, and arranged in different places in the moving direction of a car moving in the hoistway. The pair of first detection parts 21A and 21B are detection parts installed in the car, and arranged separately from each other in the moving direction of the car, and both can detect the first part 11 to be detected and the second part 12 to be detected. The second detection part 22 is a detection part installed in the car, arranged between the pair of first detection parts 21A and 21B in the moving direction of the car, and can detect the first part 11 to be detected while not detecting the second part 12 to be detected.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technique for detecting the position of a car in an elevator.

  In many elevators, a car and a counterweight are respectively connected to both ends of the main rope hung on the sheave. Move up and down the street. Then, the position and speed of the car are controlled based on the pulse count value output from the rotary encoder in accordance with the rotation of the electric motor.

  In such an elevator, especially when the car descends, the expansion and contraction of the main rope side (the part between the sheave and the car) occurs in response to the change in the car weight due to the number of passengers. There was a problem that the position of the car calculated from the count value of the car deviated from the actual position of the car. Such a problem is particularly noticeable in high-rise buildings. Thus, for example, Patent Document 1 proposes the following technique. That is, a detection part is provided in a cage | basket | car, and the several to-be-detected part detected by the said detection part is provided in the stop floor and non-stop zone in a hoistway. The storage unit stores in advance the initial value of the count value obtained in the initial stage of the elevator operation in association with each detection position where the detection unit detects the detected portion. Each time the detection unit detects the detected portion, the count value at that time is replaced with the corresponding initial value in the storage unit, thereby correcting the deviation of the count value due to the expansion and contraction of the main rope.

Japanese Patent No. 3958551 Japanese Patent No. 4907666

  However, the stop floor and the non-stop zone cannot be distinguished from the detection result of the detection unit in Patent Document 1. For this reason, when trying to perform control such as stop processing for the car and opening / closing processing of the car door using the detection result of the detection unit, the same control is executed not only in the stop floor but also in the non-stop zone. There is a fear.

  Therefore, in addition to the common detection device (see Patent Document 1) that detects the position of the car in either the stop floor or the non-stop zone, it is determined whether the detected car position is in the stop floor or the non-stop zone. It is conceivable to provide a discriminating device that performs this. As a technique that can be used for such a discriminating apparatus, for example, Patent Document 2 proposes the following technique for detecting the position of a car on a stop floor. That is, a magnetic plate and a non-magnetic plate are provided on the stop floor, and a pair of magnetic sensors for detecting the magnetic plate and a pair of optical sensors for detecting the non-magnetic plate are used in the cage. Provided. A pair of magnetic sensors detects a door openable / closable section in which the car door and the landing door can be engaged, and a pair of optical sensors detects a landing section as a stop position of the car. In this way, the technology for discriminating between the door openable / closable section and the landing section on the stop floor can be employed in a discriminating apparatus for discriminating the stop floor and the non-stop zone.

  However, if the determination device is provided separately from the common detection device, the configuration of the elevator becomes complicated. For this reason, the simple structure which has the function of a common detection apparatus and the function of a discrimination device is desired.

  Accordingly, an object of the present invention is to provide an elevator position detection device capable of realizing, with a simple configuration, the distinction and detection of two different locations such as a stop floor and a non-stop zone in a hoistway. It is to be.

  An elevator position detection apparatus according to the present invention includes a first detected unit, a second detected unit, a pair of first detecting units, and a second detecting unit. The first detected part and the second detected part are two types of detected parts installed in the hoistway, and are arranged at different locations in the moving direction of the car moving in the hoistway. The pair of first detection units are detection units installed in the car and are arranged apart from each other in the movement direction of the car, and both can detect the first detection unit and the second detection unit. Is possible. The second detection unit is a detection unit installed in the car, and is arranged between the pair of first detection units in the moving direction of the car, and can detect the first detected unit, The second detected part is not detected.

  And when the position of a cage | basket | car is in the predetermined area in the installation location of a 1st to-be-detected part, at least any one of a pair of 1st detecting parts detects a 1st to-be-detected part. Furthermore, when the position of the car is within a first specific section provided within a predetermined section, at least one of the pair of first detection units and the second detection unit detect the first detection target unit. To do. On the other hand, when the position of the car is within a predetermined section at the installation location of the second detected part, at least one of the pair of first detecting parts detects the second detected part, while the predetermined Within the section, the second detection unit does not detect the second detected unit.

  According to the above position detection device, despite the simple configuration in which one detected portion is provided at each of two different locations in the hoistway (for example, a stop floor and a non-stop zone), It becomes possible to distinguish and detect two types of different locations. That is, in the installation location of the second detected part (for example, the non-stop zone), the first detection part outputs a detection signal while the second detection part does not output the detection signal. It can be recognized that the car has arrived at the installation location of the detected part. On the other hand, since the first detection unit outputs a detection signal and the second detection unit outputs a detection signal at the installation location of the first detection unit (for example, the stop floor), the first detection unit is thereby notified. It can be recognized that the car has reached the installation location of the section.

  In the position detection device, when the position of the car is in the second specific section provided in the first specific section, both the first detection unit and the second detection unit of the pair are the first detection unit. It is preferable that it is comprised so that it may detect. In such a second specific section, it is possible to accurately guide the car to the stop position on the stop floor by executing the stop process for the car.

  In the position detection device, two second detection units may be provided in pairs between the pair of first detection units, and may be spaced apart from each other in the moving direction of the car. In this case, when the position of the car is in the third specific section including the second specific section, the position of the car is a section provided in the first specific section at the installation location of the first detected part. Preferably, at least one of the pair of first detection units and the pair of second detection units are configured to detect the first detected unit. By providing such a third specific section, various controls can be performed at the installation location of the first detected part.

  In the position detection device, the first detected part is arranged on a stop floor where the car stops in the hoistway, and the second detected part is arranged in a non-stop zone where the car does not stop in the hoistway. Is preferred.

  The position detection device may further include a control unit that controls the car. In this configuration, each of the pair of first detection units outputs a detection signal when detecting each of the first detection unit and the second detection unit, and the control unit includes the pair of first detection units. When any one of these outputs a detection signal or when the output is stopped, it is preferable to correct a control value used for controlling the car. According to this configuration, the problem that the position of the car obtained from the control value deviates from the actual position due to the expansion and contraction of the main rope particularly when the car is lowered is corrected before the deviation becomes large. Will be. Therefore, the position of the car can be controlled with high accuracy.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to implement | achieve by distinguishing and detecting two types of different places, such as a stop floor and a non-stop zone, in a hoistway.

It is the conceptual diagram which showed an example of the elevator with which the position detection apparatus of this invention is applied. It is the perspective view which showed notionally the position detection apparatus which concerns on 1st Embodiment. It is the figure which showed the detection state of the various detection parts in the installation location of a 1st to-be-detected part regarding 1st Embodiment by the relationship with the position of a cage | basket | car, and various areas. It is the figure which showed the detection state of the various detection parts in the installation location of a 2nd to-be-detected part regarding 1st Embodiment by the relationship with the position of a cage | basket | car, and various areas. It is the flowchart which showed control of the elevator in the stop floor in 1st Embodiment. It is the flowchart which showed control of the elevator in the non-stop zone in 1st Embodiment. It is the perspective view which showed notionally the position detection apparatus which concerns on 2nd Embodiment. It is the figure which showed the detection state of the various detection parts in the installation location of a 1st to-be-detected part by 2nd Embodiment in relation to the position of a cage | basket | car, and various areas. It is the figure which showed the detection state of the various detection parts in the installation location of a 2nd to-be-detected part regarding 2nd Embodiment by the relationship with the position of a cage | basket | car, and various areas. It is the flowchart which showed control of the elevator in the stop floor in 2nd Embodiment.

  FIG. 1 is a conceptual diagram showing an example of an elevator to which the position detection device of the present invention is applied. In the elevator of FIG. 1, a car 101 and a counterweight 102 are respectively connected to both ends of a main rope 104 hung on a sheave 103, and the sheave 103 is rotated by the power of the electric motor 105, so that the car 101 is The hoistway R is moved up and down while being in balance with the counterweight 102. Further, a guide rail 106 (see FIG. 2) for guiding the car 101 is provided in the hoistway R. In this embodiment, the hoistway R is defined as a path along which the car 101 moves, but the hoistway R may include a path along which the counterweight 102 moves. The hoistway R may be provided with a guide rail (not shown) that guides the counterweight 102.

  The control of the elevator is executed by the control unit 108. Specifically, the rotary encoder 109 outputs a pulse in accordance with the rotation of the electric motor 105, and the control unit 108 counts the output pulse, and controls the position and speed of the car 101 based on the obtained count value. To do. Further, the control unit 108 controls the operation of the car 101 based on the detection result output by the position detection device of the present invention.

  Note that the position detection device of the present invention is not limited to the elevator shown in FIG. 1 and can be applied to various elevators. For example, the position detection device of the present invention can be applied to various elevators such as those that transmit power to the car 101 by electromagnetic force or the like as well as those that use the main rope 104 as means for transmitting power to the car 101. it can. In addition, the position detection device of the present invention can be applied not only to a vehicle in which the car 101 moves in the vertical direction but also to an elevator in which the car 101 moves in the horizontal direction. In this case, the hoistway described in the claims corresponds to the path of the car 101 moving in the horizontal direction.

  Hereinafter, embodiments of the position detection device according to the present invention will be specifically described.

[1] First Embodiment [1-1] Configuration of Position Detection Device FIG. 2 is a perspective view conceptually showing the position detection device according to the first embodiment. As shown in FIG. 2, the position detection device includes a first detected unit 11, a second detected unit 12, a pair of first detecting units 21 </ b> A and 21 </ b> B, and a second detecting unit 22.

  The first detected part 11 and the second detected part 12 are two types of detected parts installed in the hoistway R, and are different in the moving direction D1 of the car 101 moving in the hoistway R. Arranged. In the present embodiment, the first detected part 11 is arranged on a stop floor (see FIG. 1) where the car 101 stops in the hoistway R, and the second detected part 12 has the car 101 in the hoistway R. It is arranged in a non-stop zone that does not stop (see FIG. 1).

  More specifically, the first detected portion 11 is a plate made of a magnetic material, and is fixed to the guide rail 106 via the support member 201. The second detected portion 12 is a plate made of a nonmagnetic material, and is fixed to the guide rail 106 via the support member 202. Furthermore, both the first detected part 11 and the second detected part 12 are arranged on one virtual straight line L1 extending in the moving direction D1.

  In addition, if the 2nd to-be-detected part 12 is a non-stop zone, it may be provided not only in the location in which a floor exists but in a location without a floor. Moreover, each of the 1st to-be-detected part 11 and the 2nd to-be-detected part 12 is not restricted to the case where it installs in one place in the hoistway R, You may be provided in several different places in the moving direction D1. For example, it is preferable to install the 1st to-be-detected part 11 in all the some stop floors. Furthermore, the second detected parts 12 can be provided at a plurality of locations in the non-stop zone.

  The first detectors 21A and 21B are detectors installed in the car 101, and are spaced apart from each other in the movement direction D1 (see FIG. 2). Specifically, the first detection units 21 </ b> A and 21 </ b> B are arranged at positions close to both the first detected unit 11 and the second detected unit 12 in the process of moving the car 101. That is, the first detection units 21A and 21B are arranged at positions close to the above-described virtual straight line L1.

  Both the first detection units 21A and 21B can detect the first detected unit 11 and the second detected unit 12. In the present embodiment, each of the first detection units 21A and 21B is a transmissive optical sensor that is a proximity sensor. The optical sensor includes a light projecting unit and a light receiving unit (not shown) arranged to face each other, and detects light blocking bodies existing between them when light traveling from the light projecting unit to the light receiving unit is blocked. The first detection units 21A and 21B are both located between the light projecting unit and the light receiving unit when close to the first detection unit 11 (or the second detection unit 12). (Or the second detected part 12) is arranged so as to be located.

  The first detection units 21A and 21B may be reflective optical sensors. In addition, various sensors that are not limited to optical sensors may be used for the first detection units 21A and 21B as long as they can detect both the first detection unit 11 and the second detection unit 12. Can do. Furthermore, the first detection units 21A and 21B are not limited to proximity sensors, and contact sensors such as limit switches may be used.

  The 2nd detection part 22 is a detection part installed in the cage | basket | car 101, and is distribute | arranged between a pair of 1st detection part 21A and 21B in the moving direction D1 (refer FIG. 2). Specifically, like the first detection units 21A and 21B, the second detection unit 22 is arranged at a position close to both the first detection unit 11 and the second detection unit 12 in the process of moving the car 101. Is done. That is, the second detection unit 22 is disposed at a position close to the virtual straight line L1 described above.

  The second detection unit 22 can detect the first detected unit 11, but does not detect the second detected unit 12. In the present embodiment, the second detection unit 22 is a magnetic sensor that is a proximity sensor. The magnetic sensor has a U-shaped core (not shown), and detects whether or not a magnetic material exists between both ends by detecting a change in a magnetic field generated between both ends of the core. And the 2nd detection part 22 is the 1st to-be-detected part 11 (or 2nd to-be-detected part 12) between the both ends of a core, when the 2nd to-be-detected part 11 (or the 2nd to-be-detected part 12) adjoins. ) Is located.

  As described above, in this embodiment, a plate made of a magnetic material is used for the first detected portion 11, and a plate made of a nonmagnetic material is used for the second detected portion 12. Therefore, the second detection unit 22, which is a magnetic sensor, detects the first detection unit 11 when approaching the first detection unit 11, and on the other hand, when the second detection unit 22 approaches the second detection unit 12, 2 The detected part 12 is not detected.

  The second detector 22 can be a reed switch that opens and closes by the action of an external magnetic field. In this case, a permanent magnet that generates an external magnetic field that acts on the reed switch is used for the second detected portion 12. As the second detection unit 22, various sensors that are not limited to magnetic sensors can be used as long as the first detection unit 11 and the second detection unit 12 can be distinguished and detected. .

  In the elevator, various sections are set as sections representing the position of the car 101 in the movement direction D1. In the present embodiment, the predetermined sections S0a and S0b are set, the first specific section S1a and the second specific section S2a are set in the predetermined section S0a, and the specific section S2b is set in the predetermined section S0b ( 3 and 4).

  The predetermined section S0a is a section set in the installation location of the first detected unit 11, and as will be described later, at least one of the first detecting units 21A and 21B detects the first detected unit 11. It is. Accordingly, the length of the predetermined section S0a is defined by the length of the magnetic plate (the length in the moving direction D1) that is the first detected portion 11. In the present embodiment, the predetermined section S0a is a section indicating that the stop floor is approaching that floor.

  The predetermined section S0b is a section set at the installation location of the second detected unit 12, and as will be described later, at least one of the first detecting units 21A and 21B detects the second detected unit 12. It is. Therefore, the length of the predetermined section S0b is defined by the length of the non-magnetic plate (the length in the movement direction D1) that is the second detected portion 12. In the present embodiment, the predetermined section S0b is a section indicating that the second detected portion 12 is approached in the non-stop zone. The predetermined section S0b may have the same length as the predetermined section S0a, or may have a different length from the predetermined section S0a. That is, the first detected part 11 and the second detected part 12 may have the same plate length or may have different plate lengths.

  The first specific section S1a is a section provided in the predetermined section S0a at the place where the first detected unit 11 is installed. In the present embodiment, although the first specific section S1a cannot be recognized that the floor surface of the car 101 and the floor surface of the stop floor coincide with each other on the stop floor, the landing door is linked to the car door. It is a section that can be opened (a section in which the door of the car 101 can be opened and closed). In this door openable / closable section, in an emergency, by opening the landing door in conjunction with the car door, it is possible for the passenger to escape outside the car 101 and to prevent the passenger from being trapped inside the car 101. be able to. The first specific section S1a is not limited to the door openable / closable section of the car 101 as long as it is a section provided in the predetermined section S0a, and how the elevator is controlled (that is, an aspect of the control method). It can be changed accordingly.

  The second specific section S2a is a section provided in the first specific section S1a at the installation location of the first detected unit 11. In the present embodiment, the second specific section S2a is a section in which it can be recognized that the floor surface of the car 101 and the floor surface of the stop floor coincide with each other on the stop floor. More specifically, the second specific section S2a is a section where there is almost no step between the floor surface of the car 101 and the floor surface of the stop floor (a landing section that is the stop position of the car 101). Note that the second specific section S2a is not limited to the landing section of the car 101 as long as it is a section within the first specific section S1a, depending on how the elevator is controlled (that is, the mode of the control method). It can be changed as appropriate.

  For these sections, the first detection unit 11, the second detection unit 12, the pair of first detection units 21A and 21B, and the second detection unit 22 can detect as follows. Arranged.

  FIG. 3 is a diagram showing the detection states of the various detection units at the installation location of the first detected unit 11 (in this embodiment, the stop floor) in relation to the position of the car 101 and various sections. As shown in FIG. 3, when the position of the car 101 is within the predetermined section S0a, at least one of the first detection units 21A and 21B detects the first detection unit 11 (that is, The detection signal is output. Further, when the position of the car 101 is within the first specific section S1a, at least one of the first detection units 21A and 21B and the second detection unit 22 detect the first detected unit 11 and A detection signal is output (that is, in an on state). Furthermore, when the position of the car 101 is within the second specific section S2a, any of the first detection units 21A and 21B and the second detection unit 22 detects the first detected unit 11 (that is, the on state). Output a detection signal.

  Thereby, the following detection is possible at the installation location of the first detected part 11 (in the present embodiment, the stop floor). First, the case where the car 101 descends (when the position of the car 101 moves from left to right in FIG. 3) will be described. While the car 101 descends, it approaches the installation location of the first detected part 11 (in this embodiment, the stop floor), and the position of the car 101 is the predetermined section S0a (specifically, the upper end position of the predetermined section S0a (see FIG. 3, the first detection unit 21 </ b> A is turned on and outputs a detection signal. At this time, both the first detection unit 21B and the second detection unit 22 remain off. When the car 101 further descends and the position of the car 101 reaches the first specific section S1a (specifically, the upper end position (the left end position in FIG. 3) of the first specific section S1a), the first detector In addition to 21A, the second detection unit 22 is turned on and outputs a detection signal. At this time, the first detector 21B is still in the off state. Thereafter, when the car 101 further descends and the position of the car 101 reaches the second specific section S2a (specifically, the upper end position (the left end position in FIG. 3) of the second specific section S2a), the first detector In addition to 21A and the second detection unit 22, the first detection unit 21B is turned on and outputs a detection signal.

  Next, a case where the car 101 moves up (when the position of the car 101 moves from right to left in FIG. 3) will be described. While the car 101 is moving up, it approaches the installation location of the first detected part 11 (in this embodiment, the stop floor), and the position of the car 101 is the predetermined section S0a (specifically, the lower end position of the predetermined section S0a (FIG. 3 reaches the right end position)), the first detector 21B is turned on and outputs a detection signal. At this time, both the first detection unit 21A and the second detection unit 22 remain off. When the car 101 further rises and the position of the car 101 reaches the first specific section S1a (specifically, the lower end position (the right end position in FIG. 3) of the first specific section S1a), the first detector In addition to 21B, the second detector 22 is turned on and outputs a detection signal. At this time, the first detection unit 21A is still in the off state. Thereafter, when the car 101 further rises and the position of the car 101 reaches the second specific section S2a (specifically, the lower end position (the right end position in FIG. 3) of the second specific section S2a), the first detector In addition to 21B and the second detection unit 22, the first detection unit 21A is turned on and outputs a detection signal.

  FIG. 4 is a diagram showing the detection states of the various detection units at the installation location of the second detected unit 12 (in the present embodiment, the non-stop zone) in relation to the position of the car 101 and various sections. As shown in FIG. 4, when the position of the car 101 is within the predetermined section S0b, at least one of the first detection units 21A and 21B detects the second detected unit 12, while the predetermined unit In the section S0b, the second detection unit 22 does not detect the second detected unit 12.

  As a result, the following detection is possible at the installation location of the second detected portion 12 (in the present embodiment, the non-stop zone). First, the case where the car 101 descends (when the position of the car 101 moves from left to right in FIG. 4) will be described. While the car 101 descends, it approaches the installation location of the second detected portion 12, and the position of the car 101 has reached a predetermined section S0b (specifically, the upper end position of the predetermined section S0b (the left end position in FIG. 4)). When the first detector 21A is turned on, the detection signal is output. At this time, the first detection unit 21B and the second detection unit 22 remain off. And in the installation location of the 2nd to-be-detected part 12, even if the cage | basket | car 101 further falls and the 2nd detecting part 22 adjoins to the 2nd to-be-detected part 12, the 2nd detecting part 22 is an OFF state. It remains.

  Thereafter, when the car 101 further descends and the position of the car 101 reaches the specific section S2b (specifically, the upper end position (the left end position in FIG. 4) of the specific section S2b), in addition to the first detection unit 21A The first detector 21B is turned on and outputs a detection signal. At this time, the second detection unit 22 remains off.

  Next, a case where the car 101 moves up (when the position of the car 101 moves from right to left in FIG. 3) will be described. While the car 101 is moving up, it approaches the installation location of the second detected portion 12, and the position of the car 101 has reached the predetermined section S0b (specifically, the lower end position of the predetermined section S0b (the right end position in FIG. 4)). When the first detector 21B is turned on, a detection signal is output. At this time, the first detection unit 21B and the second detection unit 22 remain off. And in the installation location of the 2nd to-be-detected part 12, even if the cage | basket | car 101 further raises and the 2nd detecting part 22 adjoins to the 2nd to-be-detected part 12, the 2nd detecting part 22 is an OFF state. It remains.

  Thereafter, when the car 101 further rises and the position of the car 101 reaches the specific section S2b (specifically, the lower end position (the right end position in FIG. 4) of the specific section S2b), in addition to the first detection unit 21B The first detector 21A is turned on and outputs a detection signal. At this time, the second detection unit 22 remains off.

  Thus, according to the position detection device of the present embodiment, a simple configuration in which one detected portion is provided at each of two different locations in the hoistway R (in the present embodiment, the first on the stop floor). In spite of the configuration of the detected portion 11 and the second detected portion 12 provided in the non-stop zone), the two types of different locations can be distinguished and detected.

  That is, in the installation location of the second detected portion 12 (in this embodiment, the non-stop zone), the first detection portions 21A and 21B output detection signals, while the second detection portion 22 does not output detection signals. Therefore, it can be recognized that the car 101 has arrived at the installation location of the second detected part 12. On the other hand, at the installation location of the first detected part 11 (in this embodiment, the stop floor), the first detection parts 21A and 21B output detection signals, and the second detection part 22 outputs detection signals. With this, it can be recognized that the car 101 has reached the installation location of the first detected part 11.

  Moreover, common detection of the 1st to-be-detected part 11 and the 2nd to-be-detected part 12 by the 1st detection parts 21A and 21B is attained in two different places. Specifically, the first detected portion 11 is the first location in both the installation location (stopped floor in the present embodiment) and the second detected location 12 (non-stop zone in the present embodiment). Since each of detection parts 21A and 21B outputs a detection signal, it can recognize that it reached the installation location of the 1st detected part 11 or the setting location of the 2nd detected part 12 by that. More specifically, common detection that enables recognition that the predetermined section S0a or S0b has been reached or common detection that enables recognition that the second specific section S2a or specific section S2b has been reached becomes possible. .

  Therefore, according to the position detection device of the present embodiment, the common detection of the first detected unit 11 and the second detected unit 12 by the first detecting units 21A and 21B and the first detected unit by the second detecting unit 22 are performed. 11 and the second detected part 12 can be discriminated. Therefore, based on the detection signals of the first detection units 21A and 21B, common at each set location of the first detection unit 11 and the second detection unit 12 (in this embodiment, the stop floor and the non-stop zone). (For example, correction processing described later) can be executed. Further, based on the detection signal of the second detection unit 22, at the installation location of the first detected unit 11 (the stop floor in the present embodiment), control such as stop processing for the car 101 and opening / closing processing of the car door or the like is performed. Can be executed. On the other hand, since the detection signal is not output from the second detection unit 22 at the installation location of the second detected unit 12 (the non-stop zone in the present embodiment), the detection signal is input to the control unit 108. It will not be done. Therefore, at the place where the second detected part 12 is installed, the control (stopping process for the car 101, opening / closing process of the car door, etc.) to be executed at the set part of the first detected part 11 is erroneously executed. There is nothing.

[1-2] Elevator Control As described above, the position detection device can distinguish and detect two different types of locations in the hoistway R (in this embodiment, a stop floor and a non-stop zone). Thus, the following elevator control is realized. That is, the pulse count value with respect to both the installation location of the first detected unit 11 (stopped floor in the present embodiment) and the installation location of the second detected unit 12 (non-stopped zone in the present embodiment). While performing the correction process, it is possible to perform the stop process on the car 101 only at the installation location of the first detected unit 11 (in the present embodiment, the stop floor).

  Hereinafter, the control of the elevator is performed at the location where the first detected unit 11 is installed (in this embodiment, control at the stop floor) and at the location where the second detected unit 12 is installed (in this embodiment). And control in the non-stop zone), and each will be described in detail.

<Control at the stop floor>
FIG. 5 is a flowchart showing elevator control on the stop floor. FIG. 5 shows the control of the elevator when the car 101 is lowered. When the car 101 approaches the stop floor while descending, the control unit 108 determines whether or not the first detection unit 21A has output a detection signal (step S11 in FIG. 5). When the control unit 108 determines that the first detection unit 21A has output a detection signal, the control unit 108 performs a correction process on the pulse count value (step S12 in FIG. 5).

  In the correction process for the count value, the control unit 108 counts at the detection position of the first detection unit 21A (the position at which the first detection unit 21A switches from the off state to the on state. When descending, the upper end position of the predetermined section S0a). Is forcibly replaced with the initial value. When the car 101 moves from the detection position of the first detection unit 21A, the control unit 108 starts counting pulses from the initial value. Here, the initial value is a count value at the detection position of the first detection unit 21A obtained when the car 101 is lowered in the initial stage of elevator operation, and is stored in a state associated with the detection position. It is stored in the unit 110 (see FIG. 1).

  According to such a correction process, the deviation of the position of the car 101 obtained from the count value from the actual position is caused by the expansion and contraction of the main rope 104 when the car 101 is lowered. It will be corrected before it grows. Therefore, the position of the car 101 can be controlled with high accuracy. The correction process is not limited to the correction that replaces the count value with the initial value, and a process that corrects control values (various control values that are not limited to the count value) used to control the car 101 may be executed.

  Thereafter, the control unit 108 determines whether or not the second detection unit 22 has output a detection signal in addition to the first detection unit 21A (step S13 in FIG. 5). And when the control part 108 judges that the 2nd detection part 22 output the detection signal (When the 2nd detection part 22 switches from an OFF state to an ON state. At the time of descent | fall, the car 101 is 1st specific area S1a. When the upper end position of the car is reached, for example, the car door is shifted to a state in which the car door can be engaged with the landing door.

  Thereafter, the control unit 108 determines whether or not the first detection unit 21B outputs a detection signal in addition to the first detection unit 21A and the second detection unit 22 (step S14 in FIG. 5). Then, when the control unit 108 determines that the first detection unit 21B has output the detection signal, the control unit 108 performs a stop process on the car 101 (step S15 in FIG. 5).

  In the stop process for the car 101, the control unit 108 is in the detection position of the first detection unit 21B (the position at which the first detection unit 21B switches from the off state to the on state. When descending, the upper end position of the second specific section S2a). The motor 105 is caused to start a stop operation. Thereby, the control part 108 stops the car 101 in the position in 2nd specific area S2a. By executing the stop process for the car 101 in the second specific section S2a, the car 101 can be accurately guided to the stop position on the stop floor. In the stop process, it is preferable to brake the electric motor 105 after the car 101 is stopped. Thereby, even if it becomes difficult to maintain the stop state of the car 101 with the output torque of the electric motor 105 at the time of a power failure, for example, the stop state of the car 101 can be maintained with the brake.

  Thereafter, the control unit 108 performs an opening / closing process of the car door and the landing door. Specifically, the control unit 108 opens and closes the car door through a door driving motor. The landing door is engaged with the car door when the car door starts to open from the fully closed state, and is thereby opened and closed by being driven by the car door.

  The elevator control at the stop floor when the car 101 is raised will be described by replacing the first detection unit 21A and the first detection unit 21B in the flowchart shown in FIG. 5 and the above description. When rising, the control unit 108 performs correction processing at the lower end position of the predetermined section S0a (detection position of the first detection unit 21B), and the lower end position of the first specific section S1a (detection position of the second detection unit 22). ), Some processing is executed as necessary, and stop processing is executed at the lower end position of the second specific section S2a (detection position of the first detection unit 21A).

  In addition, the initial value used for the correction process when rising is different from the initial value used for the correction process when falling. Specifically, the initial value used for the correction process at the time of ascent is the count value at the detection position of the first detection unit 21B obtained when the car 101 is raised in the initial stage of elevator operation. It is memorize | stored in the memory | storage part 110 (refer FIG. 1) in the state matched with the detection position.

  The correction process at the stop floor is a count at the lower end position of the predetermined section S0a (a position at which the first detection unit 21B is switched from the on state to the off state, that is, the position at which the car 101 leaves the predetermined section S0a) when descending. The value may be forcibly replaced with an initial value. In this case, when the first detection unit 21B stops outputting the detection signal, the control unit 108 executes correction processing for the pulse count value. Further, at the time of ascent, the count value at the upper end position of the predetermined section S0a (the position at which the first detection unit 21A switches from the on state to the off state, that is, the position where the car 101 leaves the predetermined section S0a) is forcibly initialized. It may be replaced with a value. In this case, when the first detection unit 21A stops outputting the detection signal, the control unit 108 performs a correction process on the pulse count value.

  Furthermore, the correction process at the stop floor is not limited to being executed at the upper end position or the lower end position of the predetermined section S0a, but may be executed at the upper end position or the lower end position of the first specific section S1a, It may be executed at the upper end position or the lower end position of the section S2a. Here, the latter case will be specifically described. When descending, when the position of the car 101 reaches the upper end position (left end position in FIG. 3) of the second specific section S2a, the first detection unit 21B is turned on in addition to the first detection unit 21A and the second detection unit 22. It becomes a state and outputs a detection signal. At this time, the control unit 108 executes correction processing for the pulse count value. When the position of the car 101 reaches the lower end position (the right end position in FIG. 3) of the second specific section S2a at the time of ascent, the first detection unit 21A is added to the first detection unit 21B and the second detection unit 22. Turns on and outputs a detection signal. At this time, the control unit 108 executes correction processing for the pulse count value.

  However, the correction process at the stop floor is preferably executed at the upper end position or the lower end position of the predetermined section S0a, or at the upper end position or the lower end position of the second specific section S2a. This is because the criterion for determining whether or not to perform correction processing can be shared with correction processing in a non-stop zone, which will be described later.

<Control in non-stop zone>
FIG. 6 is a flowchart showing control of the elevator in the non-stop zone. FIG. 6 shows the control of the elevator when the car 101 is lowered. When the car 101 descends and approaches the installation location of the second detected unit 12, the control unit 108 determines whether or not the first detection unit 21A has output a detection signal (step S21 in FIG. 6). Then, when the control unit 108 determines that the first detection unit 21A has output the detection signal, the control unit 108 performs a correction process on the pulse count value (step S22 in FIG. 5). The correction process in the non-stop zone is executed in the same manner as the correction process in the stop floor described above. Then, the control in the non-stop zone ends after the correction process is executed.

  As described above, the correction process is executed not only in the stop floor but also in the non-stop zone, so that the deviation of the count value is corrected before it becomes large. As a result, the position, speed, etc. of the car 101 are prevented from changing suddenly during correction on the stop floor after passing through the non-stop zone, and as a result, the riding comfort and landing accuracy of the elevator are maintained.

  In the non-stop zone, the second detection unit 22 does not output a detection signal. Therefore, in the non-stop zone, the detection signal of the second detection unit 22 is not input to the control unit 108. Therefore, the control unit 108 does not erroneously execute a stop process or the like to be executed on the stop floor in the non-stop zone.

  The control of the elevator in the non-stop zone when the car 101 is raised is explained by replacing the first detection unit 21A with the first detection unit 21B in the flowchart shown in FIG. 6 and the above description. Therefore, a specific description is omitted.

  The correction process in the non-stop zone is performed at the lower end position of the predetermined section S0b (the position at which the first detection unit 21B is switched from the on state to the off state. That is, the position at which the car 101 leaves the predetermined section S0b). The count value may be forcibly replaced with an initial value, and at the time of ascent, the upper end position of the predetermined section S0b (the position at which the first detection unit 21A switches from the on state to the off state. That is, the car 101 has the predetermined section S0b. The count value at the position where the vehicle leaves can be forcibly replaced with the initial value.

  Furthermore, the correction process in the non-stop zone is not limited to being executed at the upper end position or the lower end position of the predetermined section S0b, but may be executed at the upper end position or the lower end position of the specific section S2b. Specifically, it is as follows. When the position of the car 101 reaches the upper end position (left end position in FIG. 4) of the specific section S2b during the descent, the first detection unit 21B is turned on and outputs a detection signal in addition to the first detection unit 21A. To do. At this time, the control unit 108 executes correction processing for the pulse count value. In addition, when the position of the car 101 reaches the lower end position (the right end position in FIG. 4) of the specific section S2b at the time of ascent, the first detection unit 21A is turned on in addition to the first detection unit 21B. Is output. At this time, the control unit 108 executes correction processing for the pulse count value.

  It should be noted that it is preferable that the determination criterion for performing the correction process is shared between the correction process in the stop floor and the correction process in the non-stop zone. Specifically, when the correction process is executed at the upper end position or the lower end position of the predetermined section S0a on the stop floor, the correction process is preferably executed at the upper end position or the lower end position of the predetermined section S0b in the non-stop zone. . In this case, whether or not one of the first detection units 21A and 21B outputs a detection signal can be used as a common criterion. On the other hand, when the correction process is executed at the upper end position or the lower end position of the second specific section S2a on the stop floor, the correction process is preferably executed at the upper end position or the lower end position of the specific section S2b in the non-stop zone. In this case, whether or not both of the first detection units 21A and 21B output the detection signal can be used as a common determination criterion.

[2] Second Embodiment [2-1] Configuration of Position Detection Device FIG. 7 is a perspective view conceptually showing a position detection device according to a second embodiment. As shown in FIG. 7, in the position detection device, two second detection units 22 may be provided in pairs between the pair of first detection units 21 </ b> A and 21 </ b> B. In the present embodiment, the pair of second detection units 22 is referred to as second detection units 22A and 22B.

  Specifically, the pair of second detection units 22A and 22B are arranged apart from each other in the movement direction D1 of the car 101. More specifically, the second detection units 22A and 22B are close to both the first detected unit 11 and the second detected unit 12 in the process of moving the car 101, like the first detection units 21A and 21B. Arranged in position. That is, the second detection units 22A and 22B are arranged at positions close to the virtual straight line L1 on which the first detection unit 11 and the second detection unit 12 are arranged.

  In the present embodiment, a third specific section S3a is further set in the elevator as a section representing the position of the car 101 in the movement direction D1 (see FIG. 8). Here, the third specific section S3a is a section provided in the first specific section S1a and including the second specific section S2a in the installation location of the first detected unit 11. In the present embodiment, in the third specific section S3a, when the position of the car 101 has deviated from the second specific section S2a on the stop floor, the car 101 is opened and the position is the second. This is a section that can be moved so as to be within the specific section S2a (that is, a position adjustment section for the car 101). If the third specific section S3a is a section within the first specific section S1a and including the second specific section S2a, not only the position adjustment section for the car 101 but also how to control the elevator ( That is, it can be appropriately changed according to the aspect of the control method.

  In the present embodiment, the first detection unit 11, the second detection unit 12, the pair of first detection units 21A and 21B, and the pair of second detection units 22A and 22B can detect as follows. It is arranged to become.

  FIG. 8 is a diagram showing the detection states of various detection units at the installation location of the first detected unit 11 (in this embodiment, the stop floor) in relation to the position of the car 101 and various sections. As shown in FIG. 8, when the position of the car 101 is within the predetermined section S0a, at least one of the first detection units 21A and 21B detects the first detection unit 11 (that is, The detection signal is output. When the position of the car 101 is within the first specific section S1a, at least one of the first detection units 21A and 21B and at least one of the second detection units 22A and 22B are The first detected portion 11 is detected (that is, turned on) and a detection signal is output.

  When the position of the car 101 is within the third specific section S3a, at least one of the first detection units 21A and 21B and the second detection units 22A and 22B detect the first detected unit 11 and A detection signal is output (that is, in an on state). Furthermore, when the position of the car 101 is within the second specific section S2a, both the first detection units 21A and 21B and the second detection units 22A and 22B detect the first detected unit 11 (that is, The detection signal is output.

  Thereby, the following detection is possible at the installation location of the first detected part 11 (in the present embodiment, the stop floor). First, the case where the car 101 descends (when the position of the car 101 moves from left to right in FIG. 8) will be described. While the car 101 descends, it approaches the installation location of the first detected part 11 (in this embodiment, the stop floor), and the position of the car 101 is the predetermined section S0a (specifically, the upper end position of the predetermined section S0a (see FIG. 8, the first detection unit 21 </ b> A is turned on and outputs a detection signal. At this time, the first detection unit 21B and the second detection units 22A and 22B remain off. When the car 101 further descends and the position of the car 101 reaches the first specific section S1a (specifically, the upper end position of the first specific section S1a (the left end position in FIG. 8)), the first detection unit In addition to 21A, the second detection unit 22A is turned on and outputs a detection signal. At this time, the first detection unit 21B and the second detection unit 22B are still in the off state.

  Thereafter, when the car 101 further descends and the position of the car 101 reaches the third specific section S3a (specifically, the upper end position of the third specific section S3a (the left end position in FIG. 8)), the first detection unit In addition to 21A and the second detection unit 22A, the second detection unit 22B is turned on and outputs a detection signal. At this time, the first detector 21B is still in the off state. When the car 101 further descends and the position of the car 101 reaches the second specific section S2a (specifically, the upper end position (left end position in FIG. 8) of the second specific section S2a), the first detection unit In addition to 21A and the second detection units 22A and 22B, the first detection unit 21B is turned on and outputs a detection signal.

  Next, a case where the car 101 moves up (when the position of the car 101 moves from right to left in FIG. 8) will be described. While the car 101 is moving up, it approaches the installation location of the first detected part 11 (in this embodiment, the stop floor), and the position of the car 101 is the predetermined section S0a (specifically, the lower end position of the predetermined section S0a (FIG. In FIG. 8, when it reaches the right end position)), the first detector 21B is turned on and outputs a detection signal. At this time, the first detection unit 21A and the second detection units 22A and 22B remain off. When the car 101 further rises and the position of the car 101 reaches the first specific section S1a (specifically, the lower end position of the first specific section S1a (the right end position in FIG. 8)), the first detection unit In addition to 21B, the second detector 22B is turned on and outputs a detection signal. At this time, the first detector 21A and the second detector 22A are still in the off state.

  Thereafter, when the car 101 further rises and the position of the car 101 reaches the third specific section S3a (specifically, the lower end position (the right end position in FIG. 8) of the third specific section S3a), the first detector In addition to 21B and the second detector 22B, the second detector 22A is turned on and outputs a detection signal. At this time, the first detection unit 21A is still in the off state. When the position of the car 101 reaches the second specific section S2a (specifically, the lower end position (the right end position in FIG. 8) of the second specific section S2a), the first detection unit 21B and the second detection unit 22A. In addition to 22B, the first detection unit 21A is turned on and outputs a detection signal.

  FIG. 9 is a diagram illustrating the detection states of various detection units at the installation location of the second detected unit 12 (in the present embodiment, the non-stop zone) in relation to the position of the car 101 and various sections. As shown in FIG. 9, when the position of the car 101 is within the predetermined section S0b, at least one of the first detection units 21A and 21B detects the second detected unit 12, while the predetermined unit In the section S0b, the second detection units 22A and 22B do not detect the second detected unit 12.

  As a result, the following detection is possible at the installation location of the second detected portion 12 (in the present embodiment, the non-stop zone). First, the case where the car 101 descends (when the position of the car 101 moves from left to right in FIG. 9) will be described. While the car 101 descends, it approaches the installation location of the second detected part 12, and the position of the car 101 has reached the predetermined section S0b (specifically, the upper end position (the left end position in FIG. 9) of the predetermined section S0b). When the first detector 21A is turned on, the detection signal is output. At this time, the first detection unit 21B and the second detection units 22A and 22B remain off. And in the installation location of the 2nd to-be-detected part 12, even if the cage | basket | car 101 further descend | falls and 2nd detection part 22A and 22B approached the 2nd to-be-detected part 12, 2nd detection part 22A and 22B. All remain off.

  Thereafter, when the car 101 further descends and the position of the car 101 reaches the specific section S2b (specifically, the upper end position (the left end position in FIG. 9) of the specific section S2b), in addition to the first detection unit 21A The first detector 21B is turned on and outputs a detection signal. At this time, both the second detectors 22A and 22B remain off.

  Next, a case where the car 101 moves up (when the position of the car 101 moves from right to left in FIG. 9) will be described. While the car 101 is moving up, it approaches the installation location of the second detected part 12, and the position of the car 101 has reached a predetermined section S0b (specifically, the lower end position of the predetermined section S0b (the right end position in FIG. 9)). When the first detector 21B is turned on, a detection signal is output. At this time, the first detection unit 21B and the second detection units 22A and 22B remain off. And in the installation location of the 2nd to-be-detected part 12, even if the cage | basket | car 101 further raises and 2nd detection part 22A and 22B approached the 2nd to-be-detected part 12, 2nd detection part 22A and 22B. All remain off.

  Thereafter, when the car 101 further rises and the position of the car 101 reaches the specific section S2b (specifically, the lower end position (the right end position in FIG. 9) of the specific section S2b), in addition to the first detection unit 21B The first detector 21A is turned on and outputs a detection signal. At this time, both the second detectors 22A and 22B remain off.

  Thus, according to the position detection device of the present embodiment, as in the first embodiment, a simple configuration in which one detected portion is provided at each of two different locations in the hoistway R (this embodiment) Then, it is possible to distinguish and detect the two different types of locations in spite of the configuration in which the first detected unit 11 is provided on the stop floor and the second detected unit 12 is provided on the non-stop zone. Become.

  More specifically, in two different locations, the common detection of the first detected part 11 and the second detected part 12 by the first detecting parts 21A and 21B and the first detected part by the second detecting parts 22A and 22B. It is possible to distinguish between the detection unit 11 and the second detected unit 12.

[2-2] Control of Elevator FIG. 10 is a flowchart showing control of the elevator on the stop floor in the second embodiment. Note that the elevator control in the non-stop zone is the same as in the first embodiment, and thus the description thereof is omitted.

  FIG. 10 shows the control of the elevator when the car 101 is lowered. As shown in FIG. 10, when the car 101 approaches the stop floor while descending, the control unit 108 determines whether or not the first detection unit 21A has output a detection signal (step S31 in FIG. 10). When the control unit 108 determines that the first detection unit 21A has output the detection signal, the control unit 108 performs a correction process on the pulse count value (step S32 in FIG. 10). The specific contents of the correction process and the modification of the position where the correction process is executed are as described in the first embodiment.

  Thereafter, the control unit 108 determines whether or not the second detection unit 22A outputs a detection signal in addition to the first detection unit 21A (step S33 in FIG. 10). When the control unit 108 determines that the second detection unit 22A has output the detection signal, for example, the car door is shifted to a state in which the car door can be engaged with the landing door. Can be executed.

  Next, the control unit 108 determines whether or not the second detection unit 22B outputs a detection signal in addition to the first detection unit 21A and the second detection unit 22A (step S34 in FIG. 10). And when the control part 108 judges that the 2nd detection part 22B output the detection signal (When the 2nd detection part 22B switches from an OFF state to an ON state. At the time of descent | fall, the car 101 is 3rd specific area S3a. When the upper end position is reached, some processing can be performed as necessary.

  Thereafter, the control unit 108 determines whether or not the first detection unit 21B outputs a detection signal in addition to the first detection unit 21A and the second detection units 22A and 22B (step S35 in FIG. 10). When the control unit 108 determines that the first detection unit 21B has output the detection signal, the control unit 108 performs a stop process on the car 101 (step S36 in FIG. 10). The specific contents of the stop process are as described in the first embodiment.

  The elevator control at the stop floor when the car 101 is lifted is performed by replacing the first detection unit 21A and the first detection unit 21B in the flowchart shown in FIG. 10 and the above description, and the second detection unit 22A and the second detection unit. This will be described by replacing the detection unit 22B. When descending, the control unit 108 performs correction processing at the lower end position of the predetermined section S0a (detection position of the first detection unit 21B), and the lower end position of the first specific section S1a (detection position of the second detection unit 22B). ), If necessary, execute some processing as necessary at the lower end position of the third specific section S3a (detection position of the second detection unit 22A), and lower end position of the second specific section S2a ( The stop process is executed at the detection position of the first detection unit 21A.

  According to such a position detection device of the second embodiment, by providing the third specific section S3a, various controls can be performed at the installation location of the first detected unit 11 (the stop floor in the present embodiment). It becomes possible.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Further, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

  For example, the 1st to-be-detected part 11 and the 2nd to-be-detected part 12 are not restricted to the case where it is each provided in the different location divided into the stop floor and the non-stop zone, but two different types in the hoistway R It may be provided at each location.

11 First Detected Unit 12 Second Detected Unit 21A, 21B First Detected Unit 22, 22A, 22B Second Detected Unit 101 Car 102 Balance Weight 103 Sheave 104 Main Rope 105 Electric Motor 106 Guide Rail 108 Control Unit 109 Rotary Encoder 110 Storage unit 201, 202 Support member D1 Movement direction L1 Virtual straight line R Hoistway S0a, S0b Predetermined section S1a First specific section S2a Second specific section S3a Third specific section S2b Specific section

Claims (5)

Two types of detected parts installed in the hoistway, a first detected part and a second detected part arranged at different locations in the moving direction of the car moving in the hoistway;
A pair of first detection units installed in the car, which are arranged apart from each other in the movement direction, and both can detect the first detection unit and the second detection unit. A pair of first detectors;
A second detection unit installed in the car, which is arranged between the pair of first detection units in the movement direction and can detect the first detection unit; 2 a second detection unit that does not detect the detected unit;
With
When the position of the car is within a predetermined section at the installation location of the first detected part, at least one of the pair of first detecting parts detects the first detected part, and When the position of the car is in a first specific section provided in the predetermined section, at least one of the pair of first detection sections and the second detection section are in the first detection target. Part
When the position of the car is within a predetermined section at the installation location of the second detected part, at least one of the pair of first detecting parts detects the second detected part, The elevator position detection device in which the second detection unit does not detect the second detected unit within the predetermined section.   When the position of the car is in a second specific section provided in the first specific section, both the pair of first detection units and the second detection unit detect the first detected unit. The elevator position detection device according to claim 1. The second detection units are provided in pairs between the pair of first detection units, and are spaced apart from each other in the movement direction.
When the position of the car is a section provided in the first specific section at the installation location of the first detected part and is in a third specific section including the second specific section, the pair of pairs The elevator position detection device according to claim 2, wherein at least one of the first detection units and the pair of second detection units detect the first detection unit. The first detected part is arranged on a stop floor where the car stops in the hoistway,
The elevator position detection device according to any one of claims 1 to 3, wherein the second detected portion is arranged in a non-stop zone where the car does not stop in the hoistway. A control unit for controlling the car;
Each of the pair of first detection units outputs a detection signal when detecting each of the first detection unit and the second detection unit,
The control unit corrects a control value used for controlling the car when any one of the pair of first detection units outputs the detection signal or stops outputting the detection signal. The position detection apparatus of the elevator in any one of -4.

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