JP2010116229A - Elevator and elevator control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator and an elevator control method capable of detecting the position of a car in a hoistway in a non-contact manner without using any landing detection plate or any switch. <P>SOLUTION: The elevator 1 comprises laser beam measurement instruments 11-14 each having a laser beam emission unit installed in a car 10 to emit laser beam, and a laser beam reception unit for receiving laser beam, reflective members 41-44 installed in the hoistway 2 and reflecting laser beam from the laser beam emission unit to have it received by the laser beam reception unit, and a control unit 100 for obtaining position information of a car in the hoistway 2. Position information in the hoistway 2 of the car 10 is detected in a non-contact manner. The laser beam measurement instruments are installed at the upper position and the lower position of the car. The reflective members for reflecting the laser beam from the laser beam measurement instruments at the upper position are installed on a top of the hoistway, and the reflective members for reflecting the laser beam from the laser beam measurement instruments at the lower position are installed on a bottom of the hoistway. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator and an elevator control method, and more particularly, to an elevator and an elevator control method for detecting travel position information of a car in a hoistway and controlling the travel of the car.

  When the elevator car moves up and down in the hoistway, the acceleration / deceleration control of the car is performed based on a pulse signal from a pulse generator attached to a hoisting machine or a speed governor in the machine room.

Moreover, as described in Patent Document 1, some elevator elevator hoistways are provided with a plurality of test plates corresponding to each floor (floor). A photoelectric or magnetic landing device is installed in the car. When the car reaches the landing level on each floor, the landing device of the car detects the landing plate, thereby performing final landing control and control for opening the door of the opening / closing section.
JP 2004-175538 A

  In recent years, there is a remarkable tendency to increase the number of buildings, but this tendency means that the number of lifting steps that an elevator car travels and the number of stops that the car stops are proportionally increased. It is dependent on the mounting accuracy of the test plate that the test plate is attached at an accurate position with respect to the vicinity of each floor where the car stops. For this reason, an operator needs a lot of work time in order to put out the exact position of attachment of a test plate.

  In addition, multiple test plates are installed in the hoistway, and the ropes (main ropes) and tail cords of the car and the compensator for correcting the weight of these are raised and lowered due to the effects of long-period earthquakes, etc. There is a risk of moving with great amplitude in the road, physically damaging these test plates and breaking them, and there is a risk that the elevator will not be able to run for a long time.

  In addition to this, the acceleration / deceleration control failure of the car due to the failure of the pulse generator as described above, or when the deceleration command switch installed in the hoistway is installed, this deceleration command switch may break down. The command switch may malfunction due to external factors such as dust entering the hoistway.

  The present invention has been made to solve the above-described problems, and an object of the present invention is an elevator that can detect position information in a hoistway of a car in a non-contact manner without using an inspection plate or a switch. And providing an elevator control method.

  The elevator according to the present invention is an elevator in which a car moves up and down in a hoistway, and is installed in the car and has a light emitting unit that emits laser light and a light receiving unit that receives the laser light. A reflection member that is installed in the hoistway and reflects the laser light from the light emitting unit to receive the light in the light receiving unit, and the car in the hoistway by a signal from the light receiving unit. And a control unit for obtaining position information of the laser, wherein the laser measuring devices are respectively installed at an upper position and a lower position of the car and reflect the laser light from the laser measuring device at the upper position. A member is installed at the top of the hoistway, and the reflecting member that reflects the laser light from the laser measuring device at the lower position is installed at the bottom of the hoistway.

  The elevator control method according to the present invention is an elevator control method in which a car moves up and down in a hoistway. The elevator control method emits laser light from a light emitting unit of a laser measuring device installed in the car, and The laser beam is reflected by a reflecting member installed in the road, and the laser beam is received by the light receiving unit of the laser measuring device, and the control unit receives the signal from the light receiving unit and controls the car in the hoistway. It is characterized by obtaining position information.

  ADVANTAGE OF THE INVENTION According to this invention, the control method of the elevator which can detect the positional information in the hoistway of a cage | basket | car without contact without using a check board and a switch can be provided.

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

(First embodiment)
FIG. 1 is an overall view of an elevator system showing the configuration of a preferred first embodiment of an elevator according to the present invention.

  In the elevator 1 shown in FIG. 1, a hoisting machine 3 is set at the top of the hoistway 2, and a rope (main rope) 5 is hung on the hoisting machine 3 and the sheave 4. A car 10 is suspended from one end portion 5B of the rope 5, and a counterweight 6 for balancing is suspended from the other end portion 5C of the rope 5.

  The car 10 and the control unit 100 are electrically connected by a tail cord 8, and the tail cord 8 connects a power source for power and exchanges various electric signals between the car 10 and the control unit 100. I do. A compensator 9 is connected between the counterweight 6 and the car 10. The compensator 9 is provided to correct the weight of the rope 5 and the tail cord 8. When the drive motor 7 of the hoisting machine 3 is driven and controlled by the control unit 100, the car 10 moves up and down (runs) in the hoistway 2 in the Z direction along a guide rail (not shown). Yes.

  As shown in FIG. 1, the car 10 includes a first side surface portion 21, a second side surface portion 22, an upper surface portion 23, a floor surface portion 24, an entrance / exit portion 25, and a back surface portion 26. The hoistway 2 is formed by a first side surface portion 31, a second side surface portion 32, a front surface portion 35, a back surface portion 36, a top portion 33 and a bottom portion 34. The first side surface portion 21 of the car 10 faces the first inner surface portion 31 of the hoistway 2, and the second side surface portion 22 of the car 10 faces the second inner surface portion 32 of the hoistway 2. Yes. The entrance / exit part 25 of the car 10 corresponds to the front part 35 of the hoistway 2, and the back part 26 of the car 10 corresponds to the back part 36 of the hoistway 2.

  As shown in FIG. 1, four laser measuring devices 11, 12, 13, and 14 are installed in the car 10. The laser measuring devices 11 and 12 are also referred to as first laser measuring devices, and the laser measuring devices 13 and 14 are also referred to as second laser measuring devices.

  The laser measuring instrument 11 is installed at the uppermost position P1 of the entrance / exit part 25 of the car 10, and the laser measuring instrument 12 is installed at the lowermost position P2 of the entrance / exit part 25 of the car 10. The laser measuring device 13 is installed at the uppermost position P3 of the back surface portion 26 of the car 10, and the laser measuring device 14 is installed at the lowermost position P4 of the back surface portion 26 of the car 10. The uppermost positions P1 and P3 are examples of upper positions, and the lowermost positions P2 and P4 are examples of lower positions.

  As shown in FIG. 1, light reflecting members 41 and 43 are set on the lower surface of the top 33 of the hoistway 2 with an interval in the X direction. Similarly, light reflecting members 42 and 44 are set on the upper surface of the bottom 34 of the hoistway 2 at intervals in the X direction. The reflecting members 41 and 43 are installed corresponding to the positions directly above the laser measuring devices 11 and 13, respectively. Similarly, the reflecting members 42 and 44 are respectively installed corresponding to the positions directly below the laser measuring devices 12 and 14. The reflecting members 41 to 44 are flat plates, and the areas of the reflecting surfaces of the reflecting members 41 to 44 are parallel to the plane formed by the X direction and the Y direction.

  Moreover, as shown in FIG. 1, the light reflection members 61-66 are each installed in the landing sill materials 51-56 of each floor F1-F6 of the hoistway 2. As shown in FIG. The reflecting members 61 to 66 are flat plates, the areas of the reflecting surfaces of the reflecting members 61 to 66 are parallel to the plane formed by the Z direction and the Y direction, and the reflecting members 61 to 66 run the car 10 in the Z direction. By doing so, it faces the laser measuring devices 11 and 13.

  2 shows an example of electrical connection between the laser measuring devices 11 to 14 and the control unit 100 shown in FIG. 1, and the car 10, the four laser measuring devices 11 to 14, the four reflecting members 41 to 44, and the six reflecting members. The positional relationship of the members 61-66 is shown. In FIG. 2, as an example, the floors F3 and F4 of the hoistway 2 are shown as representatives.

  First, with reference to FIG. 2, the structural example of each laser measuring device 11-14 is demonstrated.

  The laser measuring device 11 has two sets of optical couplers 71 and 81, and the laser measuring device 12 has two sets of optical couplers 72 and 82. On the other hand, the laser measuring device 13 has a set of optical couplers 73, and the laser measuring device 14 has a set of optical couplers 74.

  The optical coupler 71 of the laser measuring instrument 11 shown in FIG. 2 has a light emitting part 71B and a light receiving part 71C, and the optical coupler 81 of the laser measuring instrument 11 has a light emitting part 81B and a light receiving part 81C. The optical coupler 72 of the laser measuring instrument 12 has a light emitting part 72B and a light receiving part 72C, and the optical coupler 82 of the laser measuring instrument 12 has a light emitting part 82B and a light receiving part 82C.

  The optical coupler 73 of the laser measuring instrument 13 shown in FIG. 2 has a light emitting part 73B and a light receiving part 73C. The optical coupler 74 of the laser measuring instrument 14 has a light emitting part 74B and a light receiving part 74C.

  Each of the light emitting units 71B, 72B, 73B, 74B and the light emitting units 81B, 82B can employ, for example, a laser diode that generates red laser light. For example, a photodiode can be used for each of the light receiving portions 71C, 72C, 73C, and 74C and the light emitting portions 81C and 82C.

  The light emitting units 71B, 72B, 73B, 74B, the light emitting units 81B, 82B, the light receiving units 71C, 72C, 73C, 74C, and the light emitting units 81C, 82C are electrically connected to the control unit 100.

  The control unit 100 gives a light emission drive signal to each of the light emitting units 71B, 72B, 73B, 74B and the light emitting units 81B, 82B, and emits light from each of the light receiving units 71C, 72C, 73C, 74C and the light emitting units 81C, 82C. Receives a received light signal obtained by optical / electrical signal conversion.

  As shown in FIG. 2, the laser light L1 emitted from the light emitting portion 71B of the optical coupler 71 of the laser measuring instrument 11 is reflected by the reflecting member 41 at the corresponding position, and the reflected light of the laser light L1 is received by the light receiving portion 71C. Is done. The laser light L2 emitted from the light emitting portion 72B of the optical coupler 72 of the laser measuring instrument 12 is reflected by the reflecting member 42 at the corresponding position, and the reflected light of the laser light L2 is received by the light receiving portion 72C. The laser light L3 emitted from the light emitting portion 73B of the optical coupler 73 of the laser measuring instrument 13 is reflected by the reflecting member 43 at the corresponding position, and the reflected light of the laser light L3 is received by the light receiving portion 73C. The laser light L4 emitted from the light emitting portion 74B of the optical coupler 74 of the laser measuring instrument 14 is reflected by the reflecting member 44 at the corresponding position, and the reflected light of the laser light L4 is received by the light receiving portion 74C.

  Further, the laser light L5 emitted from the light emitting portion 81B of the optical coupler 81 of the laser measuring instrument 11 shown in FIG. 2 is any one of the reflecting members 62 to 66 of the landing sill material on each floor when the car 10 is run. The reflected light of the laser beam L5 is received by the light receiving unit 81C. Similarly, the laser beam L6 emitted from the light emitting portion 82B of the optical coupler 82 of the laser measuring instrument 12 is reflected by any one of the reflecting members 61 to 66 of the landing sill material on each floor when the car 10 is run. Then, the reflected light of the laser beam L6 is received by the light receiving unit 82C.

  In addition, as for the shape of the reflection members 41-44 shown in FIG. 1 and FIG. 2, as shown in FIG. 3, it is desirable that it is a disc, for example. Thereby, compared with the case where a reflection member is square, laser beam L1-L4 can reflect reliably in the reflective area | region formed in the X direction and the Y direction with respect to the corresponding reflection members 41-44, respectively. . Moreover, the shape of the reflecting members 61 to 66 shown in FIGS. 1 and 2 may be, for example, a circular plate or a rectangular plate as shown in FIG. 3 and is not particularly limited.

  Next, a control example of the elevator 1 described above will be described.

  When the drive motor 7 of the hoisting machine 3 shown in FIG. 1 is driven and controlled by the control unit 100, the car 10 travels in the hoistway 2 in the Z direction along a guide rail (not shown). When the car 10 travels in the hoistway 2 along the Z direction, the laser light L1 emitted from the light emitting portion 71B of the laser measuring instrument 11 shown in FIG. The reflected light of L1 is received by the light receiving unit 71C. The laser beam L2 emitted from the light emitting unit 72B of the laser measuring instrument 12 is reflected by the reflecting member 42, and the reflected light of the laser beam L2 is received by the light receiving unit 72C. The laser beam L3 emitted from the light emitting unit 73B of the laser measuring instrument 13 is reflected by the reflecting member 43, and the reflected light of the laser beam L3 is received by the light receiving unit 73C. The laser beam L4 emitted from the light emitting unit 74B of the laser measuring instrument 14 is reflected by the reflecting member 44, and the reflected light of the laser beam L4 is received by the light receiving unit 74C.

  Thus, the control unit 100 calculates the time required to receive the laser beams L1 to L4 and then receives the laser beams L1 to L4, so that the car in the Z direction, which is the height direction of the car 10 in the hoistway 2. Position information, that is, height position information can be grasped in real time. Therefore, the control unit 100 can precisely control the height position of the car 10 in the hoistway 2 in the height direction.

  Moreover, the control unit 100 obtains, in addition to the position information of the car, the traveling speed of the car 10 when the car 10 travels in the hoistway 2 in real time. Then, when the car 10 is once positioned and stopped on each floor F1 to F6, the control unit 100 determines the stop position in the Z direction of the car 10 as the height in the hoistway 2 of the car 10. By setting the position information with respect to the direction, it is possible to control the stop position (landing control) of the elevator car 10 with reproducibility.

  When the car 10 shown in FIG. 1 travels in the hoistway 2 along the Z direction, the laser beam L5 emitted by the light emitting portion 81B of the optical coupler 81 of the laser measuring instrument 11 shown in FIG. Reflected by any one of the reflecting members 62 to 66 of the landing sill material on each floor, the reflected light of the laser beam L5 is received by the light receiving unit 81C. The laser light L6 emitted from the light emitting part 82B of the optical coupler 82 of the laser measuring instrument 12 is reflected by any one of the reflecting members 61 to 66 of the landing sill material on each floor, and the reflected light of the laser light L6 is received by the light receiving part. The light is received by 82C. Thereby, in order to correct the stop position of each floor when the car 10 stops at the stop position of each floor, the reflecting members 61 to 66 of the landing sill materials on each floor on the hoistway side from the car 10 side are corrected. By irradiating the laser beams L5 and L6, more accurate measurement of the position of the car 10 can be realized.

  By adopting the elevator 1 according to the embodiment of the present invention described above, the control unit 100 obtains the height position information that is the position information of the car 10, and further obtains the traveling speed of the car 10 as necessary. Therefore, it is not necessary to use all the test plates, switches, and the like that are projections installed in the elevator hoistway. Moreover, regardless of whether the car 10 of the elevator 1 according to the embodiment of the present invention is traveling or stopped in the hoistway 2, the control unit 100 displays the height position information of the car 10 in the hoistway 2. It can be detected in real time without contact. Therefore, the control unit 100 can instantaneously feed back the height position information of the car 10 in the hoistway 2 with respect to the torque control of the motor 7 of the hoisting machine 3 of the elevator 1. The ride comfort control and the landing control of the delicate car 10 can be realized.

  In the present embodiment, when the car 10 of the elevator 1 travels in the hoistway 2, the control unit 100 determines the height position information of the car 10 in the Z direction in the hoistway 2 and the platform of each floor. Since the position can be obtained accurately, the control unit 100 performs acceleration / deceleration control of the car 10 and the landing of the car 10 on each floor based on the information on the height position of the car 10. Can be controlled.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the second embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description of the same components is omitted because it is duplicated.

  4 to 6 show a second embodiment of the elevator of the present invention. FIG. 4 is an overall view of the elevator system showing the configuration of the preferred first embodiment of the elevator of the present invention. 5 shows an example of electrical connection between the laser measuring devices 11 to 14 and the control unit 100, and another car measuring device 85 and a reflecting member 41 added to the car 10 and the laser measuring devices 11 to 14 shown in FIG. -44 and the positional relationship of the reflective members 61-66 are shown. FIG. 6 is a view showing the vicinity of another laser measuring device 85.

  The elevator 1B shown in FIGS. 4 and 5 is different from the elevator 1 shown in FIGS. 1 and 2 in that another laser measuring device 85 is added. That is, in contrast to the elevator car 1 shown in FIGS. 1 and 2, as shown in FIGS. 4 and 5, the elevator 1B car 10 includes, in addition to the four laser measuring devices 11-14, Another laser measuring device 85 is provided.

  As shown in FIGS. 4 and 5, the laser measuring device 85 is installed on the lower surface of the car floor 90 of the car 10. The optical coupler of the laser measuring instrument 85 has a light emitting unit 85B and a light receiving unit 85C. On the upper surface of the car frame 93 of the car 10, a light reflecting member 95 is disposed. The reflection member 95 is directly below the laser measuring device 85.

  Ideally, the motor 7 that drives the hoisting machine 3 of the elevator 1B gives the rope 5 an appropriate torque corresponding to the loading amount of a user or the like loaded on the car 10. However, if the torque generated by the motor 7 is less or greater than the torque commensurate with the actual load capacity in the car 10, a start shock occurs when the car 10 starts running. In order to avoid this start shock, the control unit 100 needs to accurately detect the load amount in the car 10 at each start.

  Therefore, in the conventional elevator, an electrical measuring device is arranged between the car floor and the car frame, and this electrical measuring device is an amount by which the car car floor sinks in the Z1 direction due to the load of the user or the like. Is to be measured electrically.

  However, in the second embodiment of the present invention shown in FIG. 6, the laser measuring device 85 and the reflecting member 95 are arranged in place of the conventional electrical measuring device that electrically measures the sinking amount. Yes.

  The control unit 100 shown in FIG. 6 gives a light emission drive signal to the light emitting unit 85B, and receives a light receiving signal obtained by converting light / optical signals from the light receiving unit 85C.

  As shown in FIG. 6, the laser light L7 emitted from the light emitting unit 85B of the laser measuring instrument 85 is reflected by the reflecting member 95 of the car frame 93, and the reflected light of the laser light L7 is received by the light receiving unit 85C. Therefore, the controller 100 accurately measures in real time the amount of sinking in the Z1 direction of the car floor 90 of the car 10 by measuring the time required to receive the laser beam L7 after receiving it. The weight loaded on the car floor 90 when the door is opened can be calculated from the sinking amount of the car floor 90 in the Z1 direction. As a result, the control unit 100 controls the torque of the motor 7 shown in FIG. 4 based on the weight loaded on the car floor 90 to alleviate the start shock when the car 10 travels, and the car 10 travels. The user's riding comfort at the start can be improved.

  The elevator 1 according to the first embodiment of the present invention shown in FIGS. 1 and 2 and the elevator 1B according to the second embodiment shown in FIGS. 4 and 5 have the following merits.

  When the elevator car 1 of the elevator 1 or 1B travels in the hoistway 2, the control unit 100 accurately obtains the height position information of the car 10 in the Z direction in the hoistway 2 and the landing position information of each floor. Therefore, the control unit 100 performs acceleration / deceleration control of the car 10 based on the height position information of the car 10, the landing position information of each floor, and the loading capacity of the car floor of the car 10, Landing control is performed when the car 10 is landed on each floor.

  Next, an example of operation when the elevator shakes horizontally due to an earthquake or other factors will be described using the elevator 1 shown in FIG. 1 as an example.

  The state of the elevator 1 shown in FIG. 1 shows a normal use state in which no earthquake occurs. On the other hand, FIG. 7 shows an example in which the building is swayed horizontally due to an earthquake or other factors, and is displaced and tilted in the X1 direction. In this case, the hoistway 2 of the elevator 1 is also inclined by the displacement T in the X1 direction due to the inclination of the building.

  When the building and the hoistway 2 are tilted in this way, the laser beam L1 of the laser measuring device 11 shown in FIG. 7 is not reflected because it deviates from the reflection region of the reflecting member 41, and the laser beam L2 of the laser measuring device 12 is reflected. Is not reflected because it deviates from the reflection region of the reflecting member 42, and the laser beam L 3 of the laser measuring device 13 is not reflected because it deviates from the reflecting region of the reflecting member 43, and the laser beam L 4 of the laser measuring device 14. Is not reflected because it deviates from the reflection region of the reflection member 44. As described above, the shape of each of the reflecting members 41 to 44 is, for example, a disk, and the area of the reflecting region of the reflecting members 41 to 44 is limited in advance to the amount of laser light displacement that allows the building to be safely allowed. deep.

  When the laser beams L1 to L4 deviate from the reflection regions of the reflecting members 41 to 44 due to the shaking of the building, the laser beams L1 to L4 are not reflected, so that the light receiving units cannot receive light and are not controlled. No light reception signal is sent to 100. Therefore, the control unit 100 can reliably detect that the building has shaken beyond the allowable range in a non-contact manner. And the car 10 is equipped with four laser measuring devices 11 to 14, and can detect the shaking of the building more accurately than the case where two laser measuring devices are installed.

  As a result, when the building is tilted beyond the assumption, the control unit 100 can perform an operation of restricting or stopping the operation of the elevator 1 and ensuring the safety of the user.

  In conventional elevators, multiple test plates are installed in the hoistway, but ropes, tail cords, compensators, etc. are displaced with a large amplitude in the hoistway due to the effects of long-period earthquakes, etc. There is an example in which the operation of the elevator becomes impossible for a long time due to physical interference with the receiving plate which is a thing and damage.

  In each of the embodiments of the present invention described above, when the building is displaced in the horizontal direction during an earthquake, if the horizontal displacement generated between the building and the car is greater than a predetermined displacement, the laser beam Deviates from the reflective area of the reflective member at the top of the hoistway of the building and the reflective area of the reflective member at the bottom. As described above, when the laser beam deviates from the reflection region of the reflecting member, the control unit 100 does not receive the light reception signal from the light receiving unit, so the control unit 100 automatically stops driving the motor 7 and the car 10 travels. Can be stopped or restricted reliably.

  Therefore, the elevator according to each embodiment of the present invention does not require a test plate, and employs a thin plate-like light reflecting member, and the light reflecting member does not protrude in the hoistway. For this reason, a rope, a tail cord, a compensator or the like is not caught on the light reflecting member in the hoistway. As described above, since the inspection plate is unnecessary and the protrusions in the hoistway are eliminated, the elevator according to the embodiment of the present invention can provide a safer operation service than the conventional elevator.

  Conventional elevators are equipped with seismometers, but conventional seismometers have malfunctions caused by humidity and malfunctions due to external factors other than earthquakes.

  The elevator according to each embodiment of the present invention includes a plurality of laser measuring devices, and when a phenomenon occurs in which the building is shaken and inclined due to various factors including an earthquake, there is a problem in the safety of the elevator. Instead of the conventional seismometer, it can be reliably detected that the building has been displaced to the extent that it will occur.

  An elevator according to the present invention is an elevator in which a car moves up and down in a hoistway, and is installed in the car and has a light emitting unit that emits laser light and a light receiving unit that receives laser light; A reflection member that is installed in the hoistway, reflects the laser light from the light emitting unit and receives the light in the light receiving unit, and a control unit that obtains position information of the car in the hoistway by a signal from the light receiving unit; The laser measuring device is installed at each of the upper position and the lower position of the car, and the reflection member that reflects the laser light from the laser measuring device at the upper position is installed at the top of the hoistway and the laser at the lower position. A reflection member that reflects laser light from the measuring device is installed at the bottom of the hoistway. Thereby, the position information in the hoistway of the car can be detected in a non-contact manner without using a check plate or a switch. The position information of the height which is the position information of the car in the hoistway can be obtained in a non-contact manner using the reflecting member.

  In the elevator of the present invention, the reflecting member at the landing position is installed corresponding to the landing position of each floor in the hoistway, and at least one of the laser measuring device at the upper position and the laser measuring device at the lower position emits laser light. In order to obtain landing position information on each floor, the light emitting portion and a light receiving portion that receives light by reflecting the laser beam by a reflecting member at the landing position. Thus, in order to correct the stop position of each floor when the car stops at the stop position of each floor, laser light is irradiated from the car side to the reflecting member of the landing sill material on each floor on the hoistway side. By doing so, more accurate measurement of the position of the car can be realized.

  The elevator of the present invention has a laser measuring device installed on the car floor of the car and a reflecting member installed on the car frame of the car, and the laser measuring device on the car floor emits laser light. A light-emitting unit and a light-receiving unit that receives the laser beam by reflecting the laser beam by a reflecting member of the car frame, and the control unit sinks the car floor with respect to the car frame by a loading load by a signal from the light-receiving unit Get the amount of sinking. As a result, the amount of sinking of the car floor of the car can be accurately measured in real time, and the weight loaded on the car floor when the door is opened can be calculated from the amount of sinking of the car floor. The control unit controls the motor torque based on the weight loaded on the car floor to alleviate the start shock when the car travels, thereby improving the user's comfort when the car starts running .

  In the elevator according to the present invention, the control unit obtains the position information of the height of the car as the position information and the traveling speed of the car, and the control unit obtains the position of the height of the car. The acceleration / deceleration control of the car and the landing control when the car is landing on each floor based on the information, the landing position information of each floor, and the loading capacity of the car floor of the car I do. As a result, the height position and speed in the hoistway of the car can be obtained in real time, so the acceleration / deceleration control of the car and the landing control when the car is landing on each floor are more effective. It can be done reliably.

  In the elevator according to the present invention, the size of the reflecting member is set so that the laser beam deviates from the reflecting region of the reflecting member when the building is shaken and the horizontal displacement of the building exceeds a predetermined amount of displacement. If the light deviates from the reflection area of the reflecting member and the laser beam is not received by the light receiving unit, the control unit stops raising / lowering the car. As a result, in the event of a phenomenon in which the building is shaken and tilted due to various factors including earthquakes, it is ensured that the building has been displaced to the extent that the safety problem of the elevator will occur, replacing the conventional seismometer. Can be detected.

  The elevator control method of the present invention is an elevator control method in which a car installed in a building moves up and down in a hoistway, and emits laser light from a light emitting unit of a laser measuring device installed in the car, and moves up and down. The laser beam is reflected by the reflecting member installed in the road and received by the light receiving unit of the laser measuring device, and the control unit obtains the position information of the car in the hoistway from the signal from the light receiving unit. Thereby, the position information in the hoistway of the car can be detected in a non-contact manner without using a check plate or a switch.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  In the illustrated elevator, the number of floors at which the car 10 stops is six as an example, but is not limited thereto, and may be two or seven or more.

  In the illustrated elevator, a plurality of laser measuring devices are installed on one side and the other side of the car 10, but the present invention is not limited to this, and the laser measuring device may be provided on either side of the car 10.

  Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

1 is an overall view of an elevator system showing a configuration of a preferred first embodiment of an elevator according to the present invention. It is a figure which shows the electrical connection example of the laser measuring device and control part which are shown in FIG. 1, and the positional relationship of a laser measuring device and a reflection member for every car. It is a figure which shows the example of a shape of a reflection member. It is a general view of the elevator system which shows the structure of preferable 2nd Embodiment of the elevator of this invention. It is a figure which shows the electrical connection example of the laser measuring device shown in FIG. 4, and the positional relationship of a laser measuring device and a reflection member for every car. It is a figure which shows the additional laser measuring device, cage | basket | frame, etc. which are shown in FIG. 4 and FIG. It is a figure which illustrates the state in which the building and the elevator were inclined by the earthquake.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator 2 Hoistway 3 Hoisting machine 5 Rope 10 Ride car 11, 12, 13, 14 Laser measuring device 41, 42, 43, 44 Reflective member 51-56 Standing material for each floor 61-66 Reflective member 100 Control part L1-L7 laser light

Claims (6)

An elevator in which a car goes up and down in a hoistway,
A laser measuring instrument that is installed in the car and has a light emitting unit that emits laser light, and a light receiving unit that receives the laser light;
A reflection member that is installed in the hoistway, reflects the laser light from the light emitting unit, and causes the light receiving unit to receive the reflection member;
A control unit that obtains position information of the car in the hoistway by a signal from the light receiving unit;
The laser measuring device is installed at an upper position and a lower position of the car,
The reflecting member that reflects the laser light from the laser measuring device at the upper position is installed at the top of the hoistway,
The elevator characterized in that the reflecting member that reflects the laser beam from the laser measuring device at the lower position is installed at the bottom of the hoistway. In response to the landing position of each floor in the hoistway, a reflecting member at the landing position is installed,
At least one of the laser measuring device at the upper position and the laser measuring device at the lower position includes a light emitting unit that emits laser light, and the laser light at the landing position to obtain landing position information of each floor. The elevator according to claim 1, further comprising: a light receiving portion that receives light by being reflected by the reflecting member. A laser measuring instrument installed on the car floor of the car;
A reflective member installed in the car frame of the car,
The laser measuring instrument of the car floor has a light emitting part that emits laser light, and a light receiving part that receives the laser light by reflecting the laser light by the reflecting member of the car frame,
3. The elevator according to claim 2, wherein the control unit obtains a sinking amount when the car floor sinks into the car frame due to a loading load based on a signal from the light receiving unit.   The control unit obtains position information of the height of the car as the position information and a traveling speed of the car, and the control unit obtains position information of the height of the car, each floor Accelerating / decelerating control of the car and landing control when the car is landing on each floor based on the platform position information of the car and the loading capacity of the car floor of the car The elevator according to claim 3.   When the building is shaken and the horizontal displacement of the building exceeds a predetermined amount of displacement, the size of the reflecting member is set so that the laser beam deviates from the reflecting region of the reflecting member, and the laser 5. The elevator according to claim 4, wherein when the laser beam is not received by the light receiving unit due to light deviating from a reflection region of the reflecting member, the control unit stops raising and lowering the car. A method for controlling an elevator in which a car moves up and down in a hoistway,
Laser light is emitted from a light emitting part of a laser measuring device installed in the car, the laser light is reflected by a reflecting member installed in the hoistway, and the laser light is reflected by a light receiving part of the laser measuring device. An elevator control method, wherein the control unit obtains positional information of the car in the hoistway by a signal from the light receiving unit.

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