Technical field
[0001]
The present invention relates to elevator systems.
BACKGROUND
[0002]
Conventional elevator, on the car, for example, the position detecting apparatus of the photoelectric type (position detection sensor) is installed, the position detecting device, detects the plate to be detected which is installed in the hoistway in response to each floor by, it detects the opening and closing permission of the car door for door landing (open) region (door zone).
[0003]
　One example elevator for detecting the door zone using the position detecting device, there is Patent Document 1. Patent Document 1, to reach the open vertical position the car and landing doors riding position of the car, in the safety position sensor with elevator for detecting the door zone indicating an area passenger can be passenger, the car-side provided, spaced by a predetermined distance in the lifting direction, and a first and second position detecting sensor which is installed to face the landing side, provided on the landing side, so that the door zone is detected by the position detection sensor a plate to be detected which is located in, the signals of the first and second position detection sensor is input, and a logic unit for outputting the result of the logical operation of the input signal, by the logic unit logical OR output signal safe position sensor with elevator, characterized in that the signal obtained by detecting the door zone is disclosed.
CITATION
Patent Document
[0004]
Patent Document 1: International Publication No. WO 2011/111096
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　In the conventional configuration for detecting the door zone by the position detecting device provided in the car, if the position detecting device detects or erroneous failure, the car can be in the door zone, it is determined that the safety is not ensured can not door opening and closing Te, passengers there is a possibility that the situation is confined to the car ride may occur.
[0006]
　Installing additional Patent Document 1, the position detection sensor into two, the two sensors placed away a predetermined distance, and the door-zone detection signal a logic OR output signal of each signal. However, even when provided with two position detection sensor, because these are the sensors of the same photoelectric, the erroneous detection due to external light or the like may occur at the same time.
[0007]
　In view of the above circumstances, even if the position detecting device provided in the car fails, on the car is determined whether the door zone, determining whether the opening and closing of the car door It is to provide a capable elevator system.
Means for Solving the Problems
[0008]
　To solve the above problems, the present invention includes a car for lifting a hoistway, a counterweight which moves up and down together with the car, is connected to the cage at one end, and a rope whose other end is connected to the counterweight, the ropes in the elevator system and a motor for driving the measures and the plate to be detected provided in the hoistway, provided the car, the car position detecting device may detect plate to be detected, the amount of movement of the car and car movement measuring device has a control device for controlling the car position detecting device and the car movement measuring device, the control device detects a door zone is open area of ​​the car door ride by car position detecting device of determining a door-zone detection unit, anda squirrel position calculation unit calculates the position of the elevator car by car movement measuring device, a car position detecting device has failed to When the provides elevator system characterized by having a door zone determination unit that determines whether the car is in the door zone on the basis of the position of the car calculated by the car position calculating section.
Effect of the invention
[0009]
　According to the present invention, even if the position detecting device provided in the car fails, on the car is determined whether being in the door zone, that can determine whether the opening and closing of the car door Elevator it is possible to provide a system.
[0010]
　Other problems mentioned above, and advantages will become apparent from the following description of embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011]
One example elevator system according to FIG. 1 the present invention is a diagram schematically showing.
Is a flowchart showing an example of the operation of the elevator system according to FIG. 2 the present invention.
DESCRIPTION OF THE INVENTION
Example
[0012]
　Hereinafter, with reference to the accompanying drawings, it will be described in detail an embodiment of the present invention.
[0013]
　Figure 1 is a diagram schematically showing an example elevator system according to the present invention. As shown in FIG. 1, the elevator system 100 according to the present invention, the car 1 is connected to the counterweight 3 via the rope 2, to lift the hoistway 4. Movement of the car 1 (lifting) is effected by sheave 6 is driven by an electric motor 5. Pulse generator, such as encoders and (motor encoder) 7 is attached to the electric motor 5, the pulses generated by the rotation of the motor 5, the speed of the motor 5, and the position and distance of the car 1 is calculated. The car 1, car door 9 for opening and closing in opposition the landing 21 (21a, 21b) side of the door 8 (8a, 8b) are provided.
[0014]
　The car 1, the governor governor rope 14 is connected to drive with the car 1. Governor governor rope 14 is wound around the governor 13, governor 13 rotates together with the driving of the governor rope 14. The governor 13, the motor 5 similar to the pulse generator (governor encoder) 15 is attached.
[0015]
　The car 1, by detecting and cage position detecting device (position detection sensor) 10 is provided, the hoistway plate to be detected 11 which is installed in the wall of the 4 (11a, 11b), in the hoistway 4 to detect the open area of ​​the car door 9 (door zone).
[0016]
　Here, a description for the "door zone". The plate to be detected 11, a predetermined length in the lifting direction of the car 1 has a (length L in FIG. 1), the length L is capable of opening the car door 9 regions ( corresponding to the door zone). In other words, the difference between the car position detecting apparatus 10 of the car 1, when in a detectable the plate to be detected 11 position (range of the length L) includes a floor position of the car 1 floor position and the landing 21 There, it is determined that those sufficient safety can be secured to elevating the cage 1 riding passengers, landing door 8 and the car door 9 is opened and closed.
[0017]
　For example, in FIG. 1, when the car 1 is in the landing 21a, when the position of the floor of the landing 21a alpha, floor of the car 1, when the upper and lower relative to the alpha is in the range of L / 2 the car door 9 is opened and closed ride to. The plate to be detected 11, so as to corresponding to each of the door zone, is provided in the hoistway 4.
[0018]
　In the present invention, it is not particularly limited to squirrel position detecting device 10 is provided in the car 1. For example, photoelectric, such as a non-contact type detecting sensor of a magnetic and electrostatic capacitive can be used. The detection signal output by the cage position detecting device 10, the control device is inputted to the door-zone detection unit 12 in the 20 door zone is detected, the door zone detection signal door open and close instruction unit 19 receives output from the door-zone detection unit 12 and sends the switching instruction of the door the door closing instruction section 19 car door 9 and landing door 8 ride in.
[0019]
　Here, if either car position detecting apparatus 10 for detecting the door zone is erroneously detected due to some reason, or if failed, in the conventional elevator, the failure mode, the position of the car even though in the door zone, car determines that disables opening and closing of the car door is determined to be outside the door zone, as a result, there is a possibility that trapped inside the car 1 take passengers up if unnecessary. Accordingly, the present invention, even when the car position detecting device 10 has failed, that the car 1 is determined whether the door zone, and outputs a closing permission instruction of the car door ride door closing instruction unit It was the possible configurations. To realize this arrangement, in the present invention, the position of the car 1 ride by measuring the amount of movement of the car 1 (absolute position) device capable of detecting a (hereinafter, "car movement measuring device" and referred.) using, if the squirrel position detecting device 10 described above has failed determines whether the car 1 with the car movement measuring device is within a door zone.
[0020]
　The car movement measuring device, but the position of the car 1 may be any as long as it can detect, for example above the motor encoder 7 or governor encoder 15 are preferred. These pulse generator for generating a pulse in response to the amount of rotation of the motor 5 or governor 13, it is possible to calculate the position of the car 1 from the counting of the pulse. Governor encoder 15, since a small amount of slip than motor encoder 7, and more preferable. Governor encoder 15 are generally ride but is used for a speed detection of the car 1, the present invention is used to detect door zone. Rotation amount output detected by the governor encoder 15 (number of pulses) is input to the car position calculating section 16 of the control device 20, the position of the car 1 is calculated.
[0021]
　Next, the procedure will be described for detecting the door zone with car position detecting apparatus 10 and the governor encoder 15 or above. Figure 2 is a flow chart showing an example of the operation of the elevator system according to the present invention. When using a governor encoder 15 as the car movement measuring device, the slip or the like wear and governor rope 14 of the governor 13, and the actual position of the car 1, the position of the car 1 which is calculated by the car position calculating section 16 there is a possibility that the deviation occurs. Therefore, in advance records the position of the plate to be detected 11, each time the car position detecting apparatus 10 detects the plate to be detected 11, the position of the plate to be detected 11 which is previously recorded at the car position calculating section 16 If there is a difference between the calculated position of the car 1, by correcting the position of the car 1 which is calculated by the car position calculating section, match the prerecorded position of the plate to be detected 11 It is preferred.
[0022]
　For example, after the start elevator operation, pre-cage 1 is recorded every position of the detected plate 11 provided in the hoistway 4 from the pulse value of the motor encoder 7 as it passes through the plate to be detected 11 . Car position correcting unit 17, every time the car position detecting apparatus 10 passes through the plate to be detected 11, corrects the car position or calculated by the car position calculating section 16 at this time. In this case, the difference between the position and the riding position of the car 1 of the plate to be detected 11, the predetermined threshold value (hereinafter,. "First threshold value: X (mm)" to) only the correction to the time within which the It is preferred. Car position correcting unit 17 has a correction abnormality counter unit 17a, if the difference is greater than X, without correcting the position of the car 1 which is calculated by the car position calculating section 16, the correction value abnormality in the counter unit 17a, counts up the over-threshold recording (S1 and S2). S1 and S2, in the elevator cars, performed every time the car position detecting apparatus 10 detects the plate to be detected 11.
[0023]
　During normal operation of the elevator, the car is stopped at a floor that has been registered in the car call or provided to the car call floor and ride in the car, which is registered with the provided on the landing. On the other hand, in the emergency operation, after the emergency has been detected, the car 1 is forcibly moved to the nearest floor and stops. In any case, ( "Yes" in S3) after it has stopped at floor there is a car is detected, determines a failure of the car position detecting device (S4). Determination of whether the car position detecting device 10 is faulty, for example, running record of the car 1 in the control device 20 after the car is stopped (for the plate to be detected 11 by the car position detecting apparatus 10 detects signals) and prerecorded by comparing the position of the plate to be detected 11, the car position detecting device 10 can be determined by whether or not generating a signal at a position where the plate to be detected 11 is not detected.
[0024]
　If car position detecting device 10 is determined not to be faulty by S4 (the case of "No" in S4), to detect the door-zone at door zone detector 12, the car doors 9 and the landing ride door closing instruction section 19 allow it is determined that allows the door opened and closed with respect to the door 8 (S7).
[0025]
　On the other hand, if the car position detecting apparatus 10 is determined to be faulty by S4 (the case of "Yes" in the S4), the controller 20 determines whether the count of the correction value abnormality counter unit 17a (S5) . (The case of "No" in S5) when the correction value abnormality counter unit 17a is counting the correction value anomaly, regarded as the position of the car 1 which is calculated by the car position calculating section 16 is erroneous large door zone determination part 18 car 1 ride is determined to be outside the door zone, the door open and close instruction unit 9 determines door opening and closing is impossible (not permitted) (S8).
[0026]
　In S5, (the case of "Yes" in S5) when the correction value abnormality counter unit 17a is not counting the correction value abnormality, the control unit 20 of the car 1 which is calculated by the car position calculating section 16 currently (wear or a) it is within: position of the floor at) is the floor of the floor position the car 1 is stopped previously recorded, a predetermined threshold value ( "Y (mm second threshold value or less)." determines whether (S6). If it exceeds the threshold Y is, regarded as car position of the car 1 which is calculated by the car position calculating section 16 is erroneous large door zone determination unit 18 car 1 ride has determined to be outside the door zone, the door open and close instruction part 9 determines that disables door opening (S8). On the other hand, the current car position of the car 1, when the floor of the floor position the car 1 is stopped within the second threshold value Y, the door zone determination unit 18 car 1 ride is determined to be within the door zone, door closing instruction section 9 permits determines allow door opening (S7).
[0027]
　Threshold Y described above, it is necessary that a passenger 1 is to safely landing range. For example, it is preferably not more than "provisions of the door zone range × 0.5" minus X (mm) from the value of (mm). More specifically, in the range of the door zone (distance (L)) is 250 mm, when X = 20 mm, it is preferable that the Y = ± 100 mm. By setting in this manner, even when the position of the car 1 which is calculated by the car position calculating section 16, the error of Xmm occurs until stopping the stop floor from the last correction, since the car 1 is determined to be within the scope of the door zone, it is possible to allow the opening and closing of the door.
[0028]
　In the present invention, as described above, even when it is determined that the car position detecting apparatus 10 fails, the car 1 determines whether the door zone ride the judgment of S5 and S6 by the control unit 20 , it is possible to instruct the permission of the door opening and closing. Therefore, as in the prior art can be the case where it is determined that the position detection sensor has failed in comparison with the case of determining uniformly If it is outside the door zone, to reduce the chance of trapped passengers are car 1 .
[0029]
　As described above, according to the present invention, the position detection device provided in the car even if a failure, the car provides an elevator system capable of determining whether or not the door zone it was shown that it is.
[0030]
　The present invention is not limited to the embodiments described above, but includes various modifications. For example, the above embodiments are those described in detail for the purpose of better understanding of the present invention, not intended to be limited to those having the necessarily all described configurations. Further, it is possible to replace a part of the configuration of one embodiment in the configuration of another embodiment, it is also possible to add a configuration of an embodiment alternative embodiment to the configuration of. A part of the configuration of each embodiment may be added, deleted, or replaced for other configurations.
DESCRIPTION OF SYMBOLS
[0031]
　1 ... car, 2 ... rope, 3 ... counterweight, 4 ... hoistway, 5 ... motor, 6 ... sheave 7 ... pulse generator (motor encoder -), 8, 8a, 8b ... landing door, 9 ... car doors, 10 ... car position detecting device, 11, 11a, 11b ... plate to be detected, 12 ... door-zone detection unit, 13 ... governor, 14 ... governor rope, 15 ... pulse generator (governor encoder -), 16 ... basket position calculating unit, 17 ... car position correcting unit, 17a ... correction value abnormality counter unit, 18 ... door zone determination unit, 19 ... door open and close instruction unit, 20 ... controller, 21a, 21b ... landing, 100 ... elevator system.

The scope of the claims
[Requested item 1]
　A car which moves up and down the hoistway, a counterweight which moves up and down together with the car, one end of which is connected to the car, a rope whose other end is connected to the counterweight, and the motor for driving the rope, the in the elevator system having,
　a plate to be detected provided in the hoistway, is provided in the cab, said a car position detecting device may detect plate to be detected, your moving amount or measuring the amount of movement of the car has a measuring device, and a control unit for controlling the car position detecting device and the car movement measuring device,
　the control device is open region of the door of the car by the car position detecting device door zone the has a door-zone detecting section for detecting, and a squirrel position calculation unit calculates the position of the car by the car movement measuring device,
　said car position If the output device is determined to have failed, having judged door zone determining section for determining whether or not the car is in the door zone on the basis of the position of the car calculated by the car position calculating section Elevator system, characterized in that.
[Requested item 2]
　In the elevator system of claim 1, wherein, the elevator system, characterized in that said car movement measuring device is a pulse generator for outputting a pulse in accordance with the amount of movement of the car.
[Requested item 3]
　In the elevator system according to claim 2, elevator system wherein the pulse generator is connected to said electric motor, characterized in that for generating a pulse in response to rotation of the motor.
[Requested item 4]
　In the elevator system of claim 2, further comprising a governor rope connected to the car driving with the car, the governor rotates the governor and the rope is wound together with the driving of the governor rope, and Elevator system wherein the pulse generator is connected to the governor, characterized in that it generates a pulse in response to rotation of said governor.
[Requested item 5]
　In the elevator system of claim 1, wherein the control device further comprises a cage position correction unit,
　the car position correcting unit, in the car is running, when the plate to be detected is detected by the car position detecting device to, prerecorded the position of the plate to be detected, it calculates a difference between the position of the car calculated by the car position calculating section, if there is a difference, the car position calculating section Elevator system and performs a correction of the position of the calculated the car, adjusted to the position of the pre-recorded the plate to be detected at.
[Requested item 6]
　In the elevator system according to claim 5, correction by the car position correcting unit includes a position of the pre-recorded the plate to be detected, the difference between the position of the car calculated by said car position calculating section elevator system characterized in that it is performed when it is within a first predetermined threshold.
[Requested item 7]
　In the elevator system according to claim 6, wherein the car position correcting unit includes a position of the pre-recorded the plate to be detected, the difference between the position of the car calculated by said cage position detecting unit is the second If you exceed one predetermined threshold, leaving the over-threshold value recording,
　the control device, if the threshold exceeded recording is present, in the door zone determination unit, the car is determined not to the door zone,
　the threshold excess If recording is not calculates in advance and floor position of floors the car that is recorded is stopped, the difference between the position of the car calculated by the car position calculating section, the difference If there is within a second predetermined threshold, the at door zone determination unit determines that the car is in the door zone,
　the threshold exceeded recording is not and the multiply said prerecorded The position of the floor of the floor where the car is stopped, when the difference between the position of the car calculated by said car position calculating section exceeds said second predetermined threshold, in the door zone determination unit, wherein Elevator system that the car is characterized in that it determined that it is not in the door zone.