WO2021245855A1 - Elevator car weighing device - Google Patents

Elevator car weighing device Download PDF

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Publication number
WO2021245855A1
WO2021245855A1 PCT/JP2020/022014 JP2020022014W WO2021245855A1 WO 2021245855 A1 WO2021245855 A1 WO 2021245855A1 JP 2020022014 W JP2020022014 W JP 2020022014W WO 2021245855 A1 WO2021245855 A1 WO 2021245855A1
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WIPO (PCT)
Prior art keywords
value
coil
voltage
exciting coil
core
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PCT/JP2020/022014
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French (fr)
Japanese (ja)
Inventor
将太郎 森
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三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2022529231A priority Critical patent/JP7276609B2/en
Priority to PCT/JP2020/022014 priority patent/WO2021245855A1/en
Publication of WO2021245855A1 publication Critical patent/WO2021245855A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads

Definitions

  • This disclosure relates to an elevator car weighing device.
  • Patent Document 1 discloses an elevator car weighing device.
  • the weighing device uses a differential transformer to measure the load weight inside the car.
  • An object of the present disclosure is to provide an elevator car weighing device capable of suppressing an error in a measured load due to a change in ambient temperature.
  • the elevator car weighing device is adjacent to a core that changes its position in conjunction with the elevator car floor, one exciting coil that forms a magnetic field by passing an electric current, and the one exciting coil.
  • the measuring coil is provided so as to surround a part of the core, and when the one exciting coil forms a magnetic field, the measurement coil in which the induced electromotive force is induced and the one adjacent to the exciting coil, the core is inside.
  • the temperature correction value is calculated using the reference coil in which the induced electromotive force is induced and the value of the reference voltage measured by the reference coil.
  • a first processing circuit is provided, wherein the sum of the value of the measured voltage measured by the measuring coil and the temperature corrected value is set as the value of the first corrected voltage.
  • the car weighing device of the elevator calculates the temperature correction value using the value of the reference voltage measured by the reference coil, and sets the value of the measured voltage measured by the measuring coil and the temperature correction value.
  • a first processing circuit having a sum as the value of the first correction voltage was provided. Therefore, it is possible to suppress an error in the measured load due to a change in the ambient temperature.
  • FIG. 3 is a block diagram of an elevator car weighing device according to the first embodiment.
  • FIG. 3 is a plan view of the elevator car weighing device according to the first embodiment. It is a flowchart for demonstrating the outline of operation at the time of maintenance
  • a hoistway penetrates each floor of a building (not shown).
  • the car 1 includes a car frame 2, a car room 3, a plurality of floor receiving frames 4, a plurality of weighing devices 10, and a control device 5.
  • the car 1 is provided inside the hoistway.
  • the basket 1 includes two floor receiving frames 4.
  • the basket 1 includes four weighing devices 10.
  • the car frame 2 includes a lower frame 2a, two vertical frames 2b, and an upper frame 2c.
  • the car frame 2 has the shape of a rectangular frame composed of a lower frame 2a, two vertical frames 2b, and an upper frame 2c.
  • the car room 3 includes a car floor 3a, four car side surfaces 3b, and a car ceiling 3c.
  • the car room 3 forms a space surrounded by a car floor 3a, four car side surfaces 3b, and a car ceiling 3c.
  • the car chamber 3 is provided inside the frame formed by the car frame 2.
  • the car floor 3a is the lower surface of the car room 3.
  • the car floor 3a is provided above the lower frame 2a.
  • each of the plurality of floor receiving frames 4 has a rod-shaped shape.
  • each cross section of the plurality of floor receiving frames 4 has a concave shape.
  • Each of the plurality of floor receiving frames 4 is provided below the car floor 3a. Each of the plurality of floor receiving frames 4 is provided above the lower frame 2a. Each of the plurality of floor receiving frames 4 is connected to the upper surface of the lower frame 2a.
  • Each of the plurality of weighing devices 10 includes a support spring 11 and a displacement measuring device 12.
  • Each of the plurality of weighing devices 10 is connected below the car floor 3a.
  • each of the plurality of weighing devices 10 is located at the four corners of the car floor 3a.
  • Each of the plurality of weighing devices 10 is connected to each of the plurality of floor receiving frames 4.
  • the support spring 11 has elasticity.
  • the support spring 11 has a horseshoe-shaped shape.
  • the support spring 11 is provided between the car floor 3a and the floor receiving frame 4.
  • the support spring 11 is provided so as to be elastically deformed in the vertical direction.
  • the support spring 11 is connected to the lower surface of the car floor 3a.
  • the support spring 11 is connected to the upper surface of the floor receiving frame 4.
  • control device 5 is provided on the upper surface of the car ceiling 3c.
  • the control device 5 is telecommunicationsally connected to each of the plurality of weighing devices 10.
  • the control device 5 calculates the vertical load applied to the entire car floor 3a by using the voltage values of the electromotive forces output by the plurality of weighing devices 10.
  • the car floor 3a is supported by a plurality of floor receiving frames 4 via a support spring 11.
  • the support spring 11 receives a force in the vertical direction from the car floor 3a.
  • the support spring 11 receives a normal force from the floor receiving frame 4.
  • the support spring 11 is elastically deformed in the vertical direction by a displacement amount corresponding to the load. The position of the car floor 3a moves downward with respect to the floor receiving frame 4 by the amount of the displacement.
  • the displacement measuring device 12 measures the relative position of the car floor 3a with respect to the floor receiving frame 4.
  • the displacement measuring instrument 12 outputs an electromotive force having a voltage corresponding to the relative position.
  • the control device 5 calculates the vertical load applied to the entire car floor 3a by using the voltage values of the electromotive forces output by the plurality of weighing devices 10.
  • FIG. 2 is a diagram showing a displacement measuring device of the elevator car weighing device according to the first embodiment.
  • FIG. 2 shows a simple equivalent circuit of the displacement measuring instrument 12.
  • the displacement measuring instrument 12 includes a differential transformer 20 and a base 30.
  • the differential transformer 20 includes a core 21, an exciting coil 22, a measuring coil 23, and a reference coil 24.
  • the core 21 has a cylindrical shape.
  • the material of the core 21 is a soft magnetic material.
  • the core 21 is an iron core.
  • the core 21 is connected to the car floor 3a.
  • the core 21 is provided perpendicular to the floor surface of the car floor 3a.
  • the core 21 is independent of the floor receiving frame 4.
  • the core 21 changes its position in conjunction with the car floor 3a.
  • the exciting coil 22 is made of copper wire.
  • the exciting coil 22 has a spiral shape.
  • the radius of the spiral portion of the exciting coil 22 is larger than the cylindrical radius of the core 21.
  • the upper portion of the exciting coil 22 is provided so as to surround a part of the core 21.
  • the central axis of the exciting coil 22 is coaxial with the central axis of the core 21.
  • the exciting coil 22 is provided so that the core 21 can move inside.
  • the exciting coil 22 forms a magnetic field when an electric current is applied.
  • the measuring coil 23 is made of copper wire.
  • the measuring coil 23 has a spiral shape.
  • the length of the spiral portion of the measuring coil 23 is shorter than the length of the spiral portion of the exciting coil 22.
  • the measuring coil 23 is provided adjacent to the exciting coil 22.
  • the measuring coil 23 is provided so as to surround a part of the core 21.
  • the measuring coil 23 is provided so that the core 21 moves inside.
  • the measuring coil 23 is provided so as to surround the upper portion of the exciting coil 22.
  • the central axis of the measuring coil 23 is coaxial with the central axis of the exciting coil 22. In the measuring coil 23, an induced electromotive force is induced when the exciting coil 22 forms a magnetic field.
  • the reference coil 24 is made of copper wire.
  • the reference coil 24 has a spiral shape.
  • the length of the spiral portion of the reference coil 24 is shorter than the length of the spiral portion of the exciting coil 22.
  • the number of turns and the shape of the reference coil 24 are equal to the number of turns and the shape of the measuring coil 23.
  • the reference coil 24 is provided adjacent to the exciting coil 22.
  • the reference coil 24 is provided so as to surround the lower portion of the exciting coil 22.
  • the central axis of the reference coil 24 is coaxial with the central axis of the exciting coil 22.
  • the reference coil 24 is provided at a position where the core 21 does not move inside. In the reference coil 24, an induced electromotive force is induced when the exciting coil 22 forms a magnetic field.
  • the board 30 includes an exciting power supply 31, an exciting voltage terminal 32, a measurement voltage terminal 33, a reference voltage terminal 34, a first processing circuit 35, a second processing circuit 36, and a storage unit (not shown).
  • the board 30 is telecommunications connected to a control device 5 (not shown).
  • the board 30 stores the calculated value in the storage unit.
  • the base 30 determines whether or not the installation of the elevator has been completed. When the board 30 is connected to the control device 5 by telecommunication, it is determined that the installation of the elevator is completed.
  • the base 30 determines whether or not the worker has started maintenance and inspection.
  • the board 30 receives maintenance information from a maintenance terminal (not shown) during maintenance and inspection of the elevator.
  • the board 30 stores maintenance information in a storage unit.
  • the maintenance information includes information on the number of maintenance inspections and information on the inspection load applied to the car floor 3a in the maintenance inspection.
  • the maintenance information includes information that "the inspection load in the nth maintenance inspection is X kg".
  • the inspection at the time of installing the elevator means the 0th maintenance inspection.
  • the exciting voltage terminal 32 is electrically connected to both ends of the exciting coil 22.
  • the exciting voltage terminal 32 measures the potential difference between both ends of the exciting coil 22.
  • the potential difference is described as excitation voltage V in '.
  • the measurement voltage terminal 33 is electrically connected to both ends of the measurement coil 23.
  • the measurement voltage terminal 33 measures the potential difference between both ends of the measurement coil 23. The potential difference is described as measuring voltage V 1.
  • the reference voltage terminal 34 is electrically connected to both ends of the reference coil 24.
  • the reference voltage terminal 34 measures the potential difference between both ends of the reference coil 24. The potential difference is described with the reference voltage V T.
  • the first processing circuit 35 sets the voltage value of the excitation power supply 31 to set the voltage V in.
  • the first processing circuit 35 performs feedback control of the exciting power supply 31.
  • the first processing circuit 35 determines whether or not the value of the set voltage V in and the excitation voltage V in 'matches. When the values of the set voltage V in and the exciting voltage V in ′ do not match, the first processing circuit 35 calculates the sum of the power supply correction value ⁇ V in and the value of the exciting voltage V in ′.
  • the power supply correction value ⁇ V in is the difference between the value of the set voltage V in and the value of the excitation voltage V in ′. After that, the first processing circuit 35 sets the value of the sum to the voltage value of the exciting power supply 31.
  • the first processing circuit 35 by using the value of the reference voltage V T with the value of the measured voltage V 1, and calculates the first correction voltage V 2.
  • the second processing circuit 36 obtains the information of the setting voltage V in from the control device 5.
  • the second processing circuit 36 outputs the information of the set voltage V in the first processing circuit 35.
  • the second processing circuit 36 calculates the machine error ⁇ .
  • the second processing circuit 36 by using the first correction voltage and mechanical error tau, calculates a second correction voltage V 3.
  • the mechanical error ⁇ is an error of the voltage value generated by a mechanical factor.
  • mechanical factors include changes in the elastic modulus of the support spring 11 (not shown), changes in the position of the core 21 due to vibration, and the like.
  • Displacement measuring device 12 outputs the second correction voltage V 3 corresponding to the position of the core 21 to the controller 5.
  • the exciting coil 22 generates a corresponding magnetic field in the excitation voltage V in 'of the alternating current.
  • the magnetic field causes electromagnetic induction in the measuring coil 23 and the reference coil 24.
  • Induced electromotive force generated in the measuring coil 23 by the electromagnetic induction is measured voltages V 1.
  • Induced electromotive force generated in the reference coil 24 by the electromagnetic induction is the reference voltage V T.
  • the first processing circuit 35 by using the value of the reference voltage V T with the value of the measured voltage V 1, and calculates the first correction voltage V 2.
  • the second processing circuit 36 calculates the second correction voltage V 3 by using the value of the first correction voltage V 2 and the mechanical error ⁇ .
  • the second processing circuit 36 outputs the second correction voltage V 3 to the control device 5.
  • the control device 5 acquires information on the second correction voltage V 3 from each of the plurality of weighing devices. Control unit 5, by using the information of the second correction voltage V 3, and calculates the load applied to each of the plurality of weighing device 10.
  • FIG. 3 is a block diagram of the elevator car weighing device according to the first embodiment.
  • the differential transformer 20 if the excitation voltage V in 'is input, and outputs the reference voltage V T and the measured voltage V 1.
  • the measured voltage V 1 is proportional to the exciting voltage V in ′ with a proportionality constant ⁇ 1 .
  • the proportionality constant ⁇ 1 changes depending on the volume of the core 21 existing in the internal region of the measuring coil 23 and the ambient temperature of the differential transformer 20. For example, when the volume of the core 21 existing in the internal region of the measuring coil 23 increases, the proportionality constant ⁇ 1 becomes large.
  • the reference voltage VT is proportional to the exciting voltage V in ′ with a proportionality constant ⁇ 2 .
  • the proportionality constant ⁇ 2 is the mutual inductance between the exciting coil 22 and the reference coil 24.
  • the proportionality constant ⁇ 2 changes depending on the ambient temperature of the differential transformer 20.
  • the first processing circuit 35 the ambient temperature of the differential transformer 20 to correct the influence of the measuring voltage V 1.
  • the first processing circuit 35 uses the reference voltage V T, calculates a temperature correction value alpha T. Temperature correction value alpha T is a function of the value of the reference voltage V T.
  • the first processing circuit 35 calculates the sum of the values of the measured voltage V 1 and the temperature correction value ⁇ T.
  • the first processing circuit 35 the value of the sum and the first correction voltage V 2.
  • the first processing circuit 35 outputs the first correction voltage V 2 to the second processing circuit 36.
  • V 2 V 1 + ⁇ T (1)
  • the first processing circuit 35 when the maintenance, and stores the information of the reference voltage V T corresponding to the check number in the storage unit. For example, the first processing circuit 35 stores the value of the reference voltage VT (n) in the storage unit.
  • the value of the reference voltage V T (n) is defined as the value of the reference voltage V T (n) in the n th maintenance.
  • the second processing circuit 36 calculates the sum of the value of the first correction voltage V 2 and the value of the mechanical error ⁇ .
  • the second processing circuit 36 calculates the sum of the value of the sum and the second correction voltage V 3.
  • the second processing circuit 36 stores the information of the first correction voltage V 2 corresponding to the inspection load in the storage unit.
  • the second processing circuit 36 stores the value of the first inspection voltage V 2 (n, X) in the storage unit.
  • the value of the first inspection voltage V 2 (n, X) is defined as the value of the first correction voltage V 2 when the inspection load X kg is applied in the nth maintenance inspection.
  • the second processing circuit 36 determines whether or not the value of V 2 (n, X) and the value of V 2 (n-1, X) are equal. For example, if the value of V 2 (n, X) and the value of V 2 (n-1, X) are not equal, the second processing circuit 36 sets the value of the first inspection voltage V 2 (n, X). Use to calculate the machine error ⁇ . The second processing circuit 36 calculates the difference between the values of the inspection voltages for the last two inspections having the same inspection load. The second processing circuit 36 uses the value of the difference as the mechanical error ⁇ .
  • the difference between the value of V 2 (n, X) measured in the past and the value of V 2 (n-1, X) is defined as the mechanical error ⁇ .
  • ⁇ V 2 (n, X) -V 2 (n-1, X) (3)
  • the second processing circuit 36 calculates the sum of the value of the first correction voltage V 2 and the mechanical error ⁇ .
  • the second processing circuit 36 the sum and the second correction voltage V 3.
  • the second processing circuit 36 when the maintenance, and stores the information of the second correction voltage V 3 corresponding to the check load in the storage unit.
  • the second processing circuit 36 stores the value of the second inspection voltage V 3 (X) in the storage unit.
  • the second inspection voltage V 3 (X) is defined as the value of the second correction voltage V 3 when the inspection load X kg is applied.
  • FIG. 4 is a plan view of the elevator car weighing device according to the first embodiment.
  • the support spring 11 is connected to the lower surface of the car floor 3a.
  • the support spring 11 is connected to the upper surface of the floor receiving frame 4.
  • the core 21 is connected to the lower surface of the car floor 3a via a jig.
  • the displacement measuring instrument 12 is connected to the floor receiving frame 4.
  • the base 30 is provided on the side of the displacement measuring instrument 12.
  • a part of the core 21 exists inside the displacement measuring instrument 12.
  • the core 21 moves downward with respect to the displacement measuring instrument 12.
  • FIG. 5 is a flowchart for explaining an outline of the operation at the time of maintenance and inspection of the elevator car weighing device according to the first embodiment.
  • step S001 the base 30 determines whether or not the elevator installation work has been completed.
  • step S002 the operation of step S002 is performed.
  • step S002 the elevator installation work is performed.
  • step S003 the board 30 and the second processing circuit 36 store the signal in the no-load state in the storage unit.
  • Base 30 stores reference during installation voltage V T a (0) in the storage unit.
  • the second processing circuit 36 stores the value of the first correction voltage V 2 (0, 0) in the no-load state at the time of installation in the storage unit.
  • the board 30 stores the value of the second correction voltage V 3 (0) in the no-load state in the storage unit.
  • the base 30 ends the processing.
  • step S004 the weighing device 10 operates by normal operation.
  • step S005 the operation of step S005 is performed.
  • the first processing circuit 35 determines whether or not the value of the set voltage V in and the excitation voltage V in 'matches.
  • step S005 if the value of the set voltage V in and the excitation voltage V in 'do not match, the operation of step S006 is performed.
  • step S006 the first processing circuit 35 sets the sum of the value and the power correction value [Delta] V in the excitation voltage V in 'to the voltage value of the excitation power supply 31.
  • step S005 If the worker has not started maintenance and inspection in step 007, the operations after step S005 are performed.
  • step S008 the second processing circuit 36 receives maintenance information from a maintenance terminal (not shown).
  • the first processing circuit 35 determines whether or not the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) are equal.
  • step S008 if the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) is not equal, the operation of step S009 is performed.
  • step S009 the first processing circuit 35 calculates the temperature correction value alpha T using the value of V T (n). In the first processing circuit 35, the sum of the value of the measured voltage V 1 and the temperature correction value ⁇ T is defined as the first correction voltage V 2 .
  • step S010 the second processing circuit 36 determines whether or not the value of V 2 (n, 0) and the value of V 2 (n-1, 0) are equal to each other.
  • step S011 the second processing circuit 36 sets the difference between V 2 (n, 0) and V 2 (n-1, 0) as the mechanical error ⁇ .
  • the sum of the first correction voltage V 2 and the mechanical error ⁇ is defined as the second correction voltage V 3 .
  • step S012 the operation of step S012 is performed.
  • the second processing circuit 36 rewrites the value of the second correction voltage V 3 (0) in the no-load state stored in the storage unit to the value of the second correction voltage V 3.
  • the base 30 ends the processing.
  • step S008 if the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) are equal, the operation of step S013 is performed.
  • step S013 the first processing circuit 35 sets the value of the measured voltage V 1 as the first correction voltage V 2 .
  • step S010 After that, the processing after step S010 is performed.
  • step S010 If the value of V 2 (n, 0) and the value of V 2 (n-1, 0) are equal in step S010, the operation of step S014 is performed.
  • step S014 the second processing circuit 36 sets the value of the first correction voltage V 2 to the second correction voltage V 3 .
  • step S012 After that, the processing after step S012 is performed.
  • each of the plurality of weighing devices 10 includes a differential transformer 20 and a first processing circuit 35.
  • the differential transformer 20 includes a core 21, one exciting coil 22, a measuring coil 23, and a reference coil 24.
  • the measuring coil 23 and the reference coil 24 are provided side by side in the vertical direction. Therefore, the plurality of weighing devices 10 can reduce the horizontal dimension.
  • the first processing circuit 35 uses the value of the reference voltage V T, calculates a temperature correction value alpha T.
  • the sum of the value of the measured voltage V 1 and the temperature correction value ⁇ T is defined as the first correction voltage V 2 .
  • the weighing device 10 can suppress an error in the measured load due to a change in the ambient temperature.
  • each of the plurality of weighing devices 10 includes an exciting power supply 31 as a power supply device.
  • Each of the plurality of weighing devices 10 includes a second processing circuit 36.
  • the second processing circuit 36 as excitation voltage V in 'is a constant value, performs feedback control of the power supply. Therefore, the weighing device 10 can reduce the error of the measured load due to the fluctuation of the power supply voltage.
  • each of the plurality of weighing devices 10 includes a second processing circuit 36.
  • the second processing circuit 36 calculates the mechanical error ⁇ using the values of the plurality of first correction voltages V 2 measured in the past.
  • the sum of the value of the first correction voltage V 2 and the mechanical error ⁇ is taken as the second correction voltage V 3 . Therefore, the weighing device 10 can reduce the error of the measured load generated by the mechanical factor.
  • the second processing circuit 36 calculates the mechanical error ⁇ using the values of the plurality of first correction voltages V 2.
  • the first correction voltage V 2 is calculated from the measured voltage V 1. Accordingly, the second processing circuit 36, by using a plurality of measurement voltages V 1 measured in the past by the measuring coil 23, calculates the mechanical error tau. Therefore, the weighing device 10 can reduce the error of the measured load generated by the mechanical factor.
  • the material of the core 21 may be a non-magnetic metal.
  • the material of the core 21 is aluminum, copper, brass, or the like.
  • the elevator car weighing device can be used for the elevator system.

Abstract

Provided is an elevator car weighing device capable of suppressing an error of measurement load caused by a change in surrounding temperature. This elevator car weighing device is provided with: a core that changes a position thereof in conjunction with a car floor of an elevator; one excitation coil that forms a magnetic field by having current flowed therethrough; a measurement coil which is adjacent to the one excitation coil, which is disposed so as to surround a part of the core, and in which, when the one excitation coil forms a magnetic field, an induced electromotive force is generated; a reference coil which is adjacent to the one excitation coil, which is disposed so as not to make movement of the core inside, and in which, when the one excitation coil forms a magnetic field, an induced electromotive force is generated; and a first processing circuit that calculates a temperature correction value by using a value of the reference voltage measured by the reference coil and that obtains, as a first correction voltage, the sum of the temperature correction value and the value of a measurement voltage measured by the measurement coil.

Description

エレベーターのかごの秤装置Elevator basket weighing device
　本開示は、エレベーターのかごの秤装置に関する。 This disclosure relates to an elevator car weighing device.
　特許文献１は、エレベーターのかごの秤装置を開示する。秤装置は、差動トランスを用いて、かご内部の積載重量を測定する。 Patent Document 1 discloses an elevator car weighing device. The weighing device uses a differential transformer to measure the load weight inside the car.
日本特開平１１－３３５０２７号公報Japanese Patent Application Laid-Open No. 11-335027
　しかしながら、特許文献１に記載のエレベーターのかごの秤装置は、周辺温度が変化した場合、計測荷重に誤差が発生する。 However, in the elevator car weighing device described in Patent Document 1, an error occurs in the measured load when the ambient temperature changes.
　本開示は、上述の課題を解決するためになされた。本開示の目的は、周辺温度の変化による計測荷重の誤差を抑制できるエレベーターのかごの秤装置を提供することである。 This disclosure was made to solve the above-mentioned problems. An object of the present disclosure is to provide an elevator car weighing device capable of suppressing an error in a measured load due to a change in ambient temperature.
　本開示に係るエレベーターのかごの秤装置は、エレベーターのかご床と連動して位置を変えるコアと、電流を流されることで磁場を形成する１つの励磁コイルと、前記１つの励磁コイルに隣接し、前記コアの一部を囲むように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される計測コイルと、前記１つの励磁コイルに隣接し、前記コアが内部を移動しないように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される参照コイルと、前記参照コイルで測定された参照電圧の値を用いて温度補正値を演算し、前記計測コイルで測定された計測電圧の値と前記温度補正値との和を第１補正電圧の値とする第１処理回路と、を備えた。 The elevator car weighing device according to the present disclosure is adjacent to a core that changes its position in conjunction with the elevator car floor, one exciting coil that forms a magnetic field by passing an electric current, and the one exciting coil. The measuring coil is provided so as to surround a part of the core, and when the one exciting coil forms a magnetic field, the measurement coil in which the induced electromotive force is induced and the one adjacent to the exciting coil, the core is inside. When the one exciting coil is provided so as not to move and forms a magnetic field, the temperature correction value is calculated using the reference coil in which the induced electromotive force is induced and the value of the reference voltage measured by the reference coil. A first processing circuit is provided, wherein the sum of the value of the measured voltage measured by the measuring coil and the temperature corrected value is set as the value of the first corrected voltage.
　本開示によれば、エレベーターのかごの秤装置は、参照コイルで測定された参照電圧の値を用いて温度補正値を演算し、計測コイルで測定された計測電圧の値と温度補正値との和を第１補正電圧の値とする第１処理回路を備えた。このため、周辺温度の変化による計測荷重の誤差を抑制できる。 According to the present disclosure, the car weighing device of the elevator calculates the temperature correction value using the value of the reference voltage measured by the reference coil, and sets the value of the measured voltage measured by the measuring coil and the temperature correction value. A first processing circuit having a sum as the value of the first correction voltage was provided. Therefore, it is possible to suppress an error in the measured load due to a change in the ambient temperature.
実施の形態１におけるエレベーターのかごを示す図である。It is a figure which shows the car of the elevator in Embodiment 1. FIG. 実施の形態１におけるエレベーターのかごの秤装置の変位測定器を示す図である。It is a figure which shows the displacement measuring instrument of the weighing device of the car of an elevator in Embodiment 1. FIG. 実施の形態１におけるエレベーターのかごの秤装置のブロック図である。FIG. 3 is a block diagram of an elevator car weighing device according to the first embodiment. 実施の形態１におけるエレベーターのかごの秤装置の平面図である。FIG. 3 is a plan view of the elevator car weighing device according to the first embodiment. 実施の形態１におけるエレベーターのかごの秤装置の保守点検時の動作の概要を説明するためのフローチャートである。It is a flowchart for demonstrating the outline of operation at the time of maintenance | maintenance | maintenance | inspection of the car of the elevator car according to Embodiment 1.
　本開示を実施するための形態について添付の図面に従って説明する。なお、各図中、同一または相当する部分には同一の符号が付される。当該部分の重複説明は適宜に簡略化ないし省略される。 The mode for carrying out this disclosure will be described according to the attached drawings. In each figure, the same or corresponding parts are designated by the same reference numerals. The duplicate description of the relevant part will be simplified or omitted as appropriate.
実施の形態１．
　図１は実施の形態１におけるエレベーターのかごを示す図である。 Embodiment 1.
FIG. 1 is a diagram showing an elevator car according to the first embodiment.
　図１のエレベーターにおいて、図示されない昇降路は、図示されない建築物の各階を貫く。かご１は、かご枠２とかご室３と複数の床受枠４と複数の秤装置１０と制御装置５とを備える。かご１は、昇降路の内部に設けられる。例えば、かご１は、２つの床受枠４を備える。例えば、かご１は、４つの秤装置１０を備える。 In the elevator of FIG. 1, a hoistway (not shown) penetrates each floor of a building (not shown). The car 1 includes a car frame 2, a car room 3, a plurality of floor receiving frames 4, a plurality of weighing devices 10, and a control device 5. The car 1 is provided inside the hoistway. For example, the basket 1 includes two floor receiving frames 4. For example, the basket 1 includes four weighing devices 10.
　かご枠２は、下枠２ａと２つの縦枠２ｂと上枠２ｃとを備える。例えば、かご枠２は、下枠２ａと２つの縦枠２ｂと上枠２ｃとで構成される長方形の枠の形状を備える。 The car frame 2 includes a lower frame 2a, two vertical frames 2b, and an upper frame 2c. For example, the car frame 2 has the shape of a rectangular frame composed of a lower frame 2a, two vertical frames 2b, and an upper frame 2c.
　かご室３は、かご床３ａと４つのかご側面３ｂとかご天井３ｃとを備える。かご室３は、かご床３ａと４つのかご側面３ｂとかご天井３ｃとで囲まれた空間を形成する。かご室３は、かご枠２が形成する枠の内側に設けられる。 The car room 3 includes a car floor 3a, four car side surfaces 3b, and a car ceiling 3c. The car room 3 forms a space surrounded by a car floor 3a, four car side surfaces 3b, and a car ceiling 3c. The car chamber 3 is provided inside the frame formed by the car frame 2.
　かご床３ａは、かご室３の下面である。かご床３ａは、下枠２ａの上方に設けられる。 The car floor 3a is the lower surface of the car room 3. The car floor 3a is provided above the lower frame 2a.
　例えば、複数の床受枠４の各々は、棒状の形状を備える。例えば、複数の床受枠４の各々の断面は、凹字型の形状を備える。 For example, each of the plurality of floor receiving frames 4 has a rod-shaped shape. For example, each cross section of the plurality of floor receiving frames 4 has a concave shape.
　複数の床受枠４の各々は、かご床３ａの下方に設けられる。複数の床受枠４の各々は、下枠２ａの上方に設けられる。複数の床受枠４の各々は、下枠２ａの上面に接続される。 Each of the plurality of floor receiving frames 4 is provided below the car floor 3a. Each of the plurality of floor receiving frames 4 is provided above the lower frame 2a. Each of the plurality of floor receiving frames 4 is connected to the upper surface of the lower frame 2a.
　複数の秤装置１０の各々は、支持ばね１１と変位測定器１２とを備える。複数の秤装置１０の各々は、かご床３ａの下方に接続される。例えば、複数の秤装置１０の各々は、かご床３ａの四隅に位置する。複数の秤装置１０の各々は、複数の床受枠４の各々に接続される。 Each of the plurality of weighing devices 10 includes a support spring 11 and a displacement measuring device 12. Each of the plurality of weighing devices 10 is connected below the car floor 3a. For example, each of the plurality of weighing devices 10 is located at the four corners of the car floor 3a. Each of the plurality of weighing devices 10 is connected to each of the plurality of floor receiving frames 4.
　例えば、複数の秤装置１０の各々は、かご床３ａに加わる鉛直方向の荷重を測定する。 For example, each of the plurality of weighing devices 10 measures the vertical load applied to the car floor 3a.
　支持ばね１１は、弾性を有する。例えば、支持ばね１１は、馬蹄型の形状を備える。 The support spring 11 has elasticity. For example, the support spring 11 has a horseshoe-shaped shape.
　支持ばね１１は、かご床３ａと床受枠４との間に設けられる。支持ばね１１は、上下方向に弾性変形するよう設けられる。支持ばね１１は、かご床３ａの下面に接続される。支持ばね１１は、床受枠４の上面に接続される。 The support spring 11 is provided between the car floor 3a and the floor receiving frame 4. The support spring 11 is provided so as to be elastically deformed in the vertical direction. The support spring 11 is connected to the lower surface of the car floor 3a. The support spring 11 is connected to the upper surface of the floor receiving frame 4.
　例えば、変位測定器１２は、支持ばね１１の近傍に設けられる。例えば、変位測定器１２は、床受枠４に接続される。変位測定器１２は、床受枠４に対するかご床３ａの鉛直方向の相対位置を測定する。変位測定器１２は、当該相対位置に対応した電圧を有する起電力を出力する。 For example, the displacement measuring instrument 12 is provided in the vicinity of the support spring 11. For example, the displacement measuring instrument 12 is connected to the floor receiving frame 4. The displacement measuring instrument 12 measures the vertical relative position of the car floor 3a with respect to the floor receiving frame 4. The displacement measuring instrument 12 outputs an electromotive force having a voltage corresponding to the relative position.
　例えば、制御装置５は、かご天井３ｃの上面に設けられる。制御装置５は、複数の秤装置１０の各々と電気通信的に接続される。制御装置５は、複数の秤装置１０が出力した起電力の電圧値を用いて、かご床３ａの全体に加わる鉛直方向の荷重を演算する。 For example, the control device 5 is provided on the upper surface of the car ceiling 3c. The control device 5 is telecommunicationsally connected to each of the plurality of weighing devices 10. The control device 5 calculates the vertical load applied to the entire car floor 3a by using the voltage values of the electromotive forces output by the plurality of weighing devices 10.
　かご床３ａは、支持ばね１１を介して、複数の床受枠４に支持される。例えば、利用者がかご１に乗車した場合、利用者の荷重がかご床３ａに加わる。支持ばね１１は、かご床３ａから鉛直方向に力を受ける。支持ばね１１は、床受枠４から垂直抗力を受ける。支持ばね１１は、当該荷重に相当する変位量だけ鉛直方向に弾性変形する。かご床３ａの位置は、当該変位量だけ、床受枠４に対して下方に移動する。 The car floor 3a is supported by a plurality of floor receiving frames 4 via a support spring 11. For example, when the user gets in the car 1, the load of the user is applied to the car floor 3a. The support spring 11 receives a force in the vertical direction from the car floor 3a. The support spring 11 receives a normal force from the floor receiving frame 4. The support spring 11 is elastically deformed in the vertical direction by a displacement amount corresponding to the load. The position of the car floor 3a moves downward with respect to the floor receiving frame 4 by the amount of the displacement.
　変位測定器１２は、床受枠４に対するかご床３ａの相対位置を測定する。変位測定器１２は、当該相対位置に対応した電圧を有する起電力を出力する。制御装置５は、複数の秤装置１０が出力した起電力の電圧値を用いて、かご床３ａの全体に加わる鉛直方向の荷重を演算する。 The displacement measuring device 12 measures the relative position of the car floor 3a with respect to the floor receiving frame 4. The displacement measuring instrument 12 outputs an electromotive force having a voltage corresponding to the relative position. The control device 5 calculates the vertical load applied to the entire car floor 3a by using the voltage values of the electromotive forces output by the plurality of weighing devices 10.
　次に、図２を用いて、変位測定器１２の差動トランスについて説明する。
　図２は実施の形態１におけるエレベーターのかごの秤装置の変位測定器を示す図である。図２において、変位測定器１２の簡易的な等価回路が示される。 Next, the differential transformer of the displacement measuring instrument 12 will be described with reference to FIG.
FIG. 2 is a diagram showing a displacement measuring device of the elevator car weighing device according to the first embodiment. FIG. 2 shows a simple equivalent circuit of the displacement measuring instrument 12.
　図２に示されるように、変位測定器１２は、差動トランス２０と基盤３０とを備える。 As shown in FIG. 2, the displacement measuring instrument 12 includes a differential transformer 20 and a base 30.
　差動トランス２０は、コア２１と励磁コイル２２と計測コイル２３と参照コイル２４とを備える。 The differential transformer 20 includes a core 21, an exciting coil 22, a measuring coil 23, and a reference coil 24.
　例えば、コア２１は、円筒状の形状を備える。例えば、コア２１の材質は、軟磁性体である。例えば、コア２１は、鉄心である。 For example, the core 21 has a cylindrical shape. For example, the material of the core 21 is a soft magnetic material. For example, the core 21 is an iron core.
　コア２１は、かご床３ａに接続される。コア２１は、かご床３ａの床面に対して垂直に設けられる。コア２１は、床受枠４に対して独立している。コア２１は、かご床３ａと連動して位置を変える。 The core 21 is connected to the car floor 3a. The core 21 is provided perpendicular to the floor surface of the car floor 3a. The core 21 is independent of the floor receiving frame 4. The core 21 changes its position in conjunction with the car floor 3a.
　例えば、励磁コイル２２は、銅線からなる。励磁コイル２２は、らせん形状を備える。励磁コイル２２のらせん部分の半径は、コア２１の円筒半径より大きい。励磁コイル２２の上部は、コア２１の一部を囲むよう設けられる。励磁コイル２２の中心軸は、コア２１の中心軸と同軸である。励磁コイル２２は、コア２１が内部を移動し得るよう設けられる。励磁コイル２２は、電流を流された場合、磁場を形成する。 For example, the exciting coil 22 is made of copper wire. The exciting coil 22 has a spiral shape. The radius of the spiral portion of the exciting coil 22 is larger than the cylindrical radius of the core 21. The upper portion of the exciting coil 22 is provided so as to surround a part of the core 21. The central axis of the exciting coil 22 is coaxial with the central axis of the core 21. The exciting coil 22 is provided so that the core 21 can move inside. The exciting coil 22 forms a magnetic field when an electric current is applied.
　例えば、計測コイル２３は、銅線からなる。計測コイル２３は、らせん形状を備える。例えば、計測コイル２３のらせん部分の長さは、励磁コイル２２のらせん部分の長さよりも短い。計測コイル２３は、励磁コイル２２に隣接して設けられる。例えば、計測コイル２３は、コア２１の一部を囲むよう設けられる。例えば、計測コイル２３は、コア２１が内部を移動するように設けられる。例えば、計測コイル２３は、励磁コイル２２の上部を囲むよう設けられる。計測コイル２３の中心軸は、励磁コイル２２の中心軸と同軸である。計測コイル２３は、励磁コイル２２が磁場を形成した場合、誘導起電力が誘起される。 For example, the measuring coil 23 is made of copper wire. The measuring coil 23 has a spiral shape. For example, the length of the spiral portion of the measuring coil 23 is shorter than the length of the spiral portion of the exciting coil 22. The measuring coil 23 is provided adjacent to the exciting coil 22. For example, the measuring coil 23 is provided so as to surround a part of the core 21. For example, the measuring coil 23 is provided so that the core 21 moves inside. For example, the measuring coil 23 is provided so as to surround the upper portion of the exciting coil 22. The central axis of the measuring coil 23 is coaxial with the central axis of the exciting coil 22. In the measuring coil 23, an induced electromotive force is induced when the exciting coil 22 forms a magnetic field.
　例えば、参照コイル２４は、銅線からなる。参照コイル２４は、らせん形状を備える。参照コイル２４のらせん部分の長さは、励磁コイル２２のらせん部分の長さよりも短い。例えば、参照コイル２４の巻き数と形状とは、計測コイル２３の巻き数と形状と等しい。参照コイル２４は、励磁コイル２２に隣接して設けられる。例えば、参照コイル２４は、励磁コイル２２の下部を囲むよう設けられる。参照コイル２４の中心軸は、励磁コイル２２の中心軸と同軸である。参照コイル２４は、コア２１が内部を移動しない位置に設けられる。参照コイル２４は、励磁コイル２２が磁場を形成した場合、誘導起電力が誘起される。 For example, the reference coil 24 is made of copper wire. The reference coil 24 has a spiral shape. The length of the spiral portion of the reference coil 24 is shorter than the length of the spiral portion of the exciting coil 22. For example, the number of turns and the shape of the reference coil 24 are equal to the number of turns and the shape of the measuring coil 23. The reference coil 24 is provided adjacent to the exciting coil 22. For example, the reference coil 24 is provided so as to surround the lower portion of the exciting coil 22. The central axis of the reference coil 24 is coaxial with the central axis of the exciting coil 22. The reference coil 24 is provided at a position where the core 21 does not move inside. In the reference coil 24, an induced electromotive force is induced when the exciting coil 22 forms a magnetic field.
　基盤３０は、励磁電源３１と励磁電圧端子３２と計測電圧端子３３と参照電圧端子３４と第１処理回路３５と第２処理回路３６と図示されない記憶部とを備える。基盤３０は、図示されない制御装置５と電気通信的に接続される。 The board 30 includes an exciting power supply 31, an exciting voltage terminal 32, a measurement voltage terminal 33, a reference voltage terminal 34, a first processing circuit 35, a second processing circuit 36, and a storage unit (not shown). The board 30 is telecommunications connected to a control device 5 (not shown).
　基盤３０は、演算した値を記憶部に記憶させる。基盤３０は、エレベーターの据付が終了しているか否かを判定する。基盤３０は、制御装置５と電気通信的に接続されている場合、エレベーターの据付が終了していると判定する。 The board 30 stores the calculated value in the storage unit. The base 30 determines whether or not the installation of the elevator has been completed. When the board 30 is connected to the control device 5 by telecommunication, it is determined that the installation of the elevator is completed.
　基盤３０は、作業員が保守点検を開始したか否かを判定する。基盤３０は、エレベーターの保守点検の際、図示されない保守端末から保守情報を受け取る。基盤３０は、保守情報を記憶部に記憶させる。保守情報は、保守点検の回数の情報と保守点検においてかご床３ａに加えられた点検荷重の情報とを備える。例えば、保守情報は、「ｎ回目の保守点検における、点検荷重はＸｋｇである」という情報を備える。例えば、エレベーター据付時の点検は、０回目の保守点検を意味する。 The base 30 determines whether or not the worker has started maintenance and inspection. The board 30 receives maintenance information from a maintenance terminal (not shown) during maintenance and inspection of the elevator. The board 30 stores maintenance information in a storage unit. The maintenance information includes information on the number of maintenance inspections and information on the inspection load applied to the car floor 3a in the maintenance inspection. For example, the maintenance information includes information that "the inspection load in the nth maintenance inspection is X kg". For example, the inspection at the time of installing the elevator means the 0th maintenance inspection.
　励磁電源３１は、励磁コイル２２の両端の各々と電気的に接続される。励磁電源３１は、電源装置として、設定された電圧値の交流電流を励磁コイル２２に流す。当該設定された電圧値は、設定電圧Ｖｉｎと記述される。 The exciting power supply 31 is electrically connected to each of both ends of the exciting coil 22. As a power supply device, the exciting power supply 31 causes an alternating current having a set voltage value to flow through the exciting coil 22. The set voltage value is described as the set voltage V in.
　励磁電圧端子３２は、励磁コイル２２の両端と電気的に接続される。励磁電圧端子３２は、励磁コイル２２の両端の電位差を測定する。当該電位差は、励磁電圧Ｖｉｎ´と記述される。 The exciting voltage terminal 32 is electrically connected to both ends of the exciting coil 22. The exciting voltage terminal 32 measures the potential difference between both ends of the exciting coil 22. The potential difference is described as excitation voltage V in '.
　計測電圧端子３３は、計測コイル２３の両端と電気的に接続される。計測電圧端子３３は、計測コイル２３の両端の電位差を測定する。当該電位差は、計測電圧Ｖ１と記述される。 The measurement voltage terminal 33 is electrically connected to both ends of the measurement coil 23. The measurement voltage terminal 33 measures the potential difference between both ends of the measurement coil 23. The potential difference is described as measuring voltage V 1.
　参照電圧端子３４は、参照コイル２４の両端と電気的に接続される。参照電圧端子３４は、参照コイル２４の両端の電位差を測定する。当該電位差は、参照電圧ＶＴと記述される。 The reference voltage terminal 34 is electrically connected to both ends of the reference coil 24. The reference voltage terminal 34 measures the potential difference between both ends of the reference coil 24. The potential difference is described with the reference voltage V T.
　第１処理回路３５は、励磁電源３１の電圧値を設定電圧Ｖｉｎに設定する。第１処理回路３５は、励磁電源３１のフィードバック制御を行う。 The first processing circuit 35 sets the voltage value of the excitation power supply 31 to set the voltage V in. The first processing circuit 35 performs feedback control of the exciting power supply 31.
　第１処理回路３５は、設定電圧Ｖｉｎと励磁電圧Ｖｉｎ´との値が一致するか否かを判定する。第１処理回路３５は、設定電圧Ｖｉｎと励磁電圧Ｖｉｎ´との値が一致しない場合、電源補正値ΔＶｉｎと励磁電圧Ｖｉｎ´の値との和を演算する。電源補正値ΔＶｉｎは、設定電圧Ｖｉｎの値と励磁電圧Ｖｉｎ´の値との差である。その後、第１処理回路３５は、当該和の値を励磁電源３１の電圧値に設定する。 The first processing circuit 35 determines whether or not the value of the set voltage V in and the excitation voltage V in 'matches. When the values of the set voltage V in and the exciting voltage V in ′ do not match, the first processing circuit 35 calculates the sum of the power supply correction value ΔV in and the value of the exciting voltage V in ′. The power supply correction value ΔV in is the difference between the value of the set voltage V in and the value of the excitation voltage V in ′. After that, the first processing circuit 35 sets the value of the sum to the voltage value of the exciting power supply 31.
　第１処理回路３５は、計測電圧Ｖ１の値と参照電圧ＶＴの値とを用いて、第１補正電圧Ｖ２を演算する。 The first processing circuit 35, by using the value of the reference voltage V T with the value of the measured voltage V 1, and calculates the first correction voltage V 2.
　第２処理回路３６は、制御装置５から設定電圧Ｖｉｎの情報を取得する。第２処理回路３６は、第１処理回路３５に設定電圧Ｖｉｎの情報を出力する。 The second processing circuit 36 obtains the information of the setting voltage V in from the control device 5. The second processing circuit 36 outputs the information of the set voltage V in the first processing circuit 35.
　第２処理回路３６は、機械誤差τを演算する。第２処理回路３６は、第１補正電圧と機械誤差τを用いて、第２補正電圧Ｖ３を演算する。機械誤差τは、機械的な要因によって発生する電圧値の誤差である。例えば、機械的な要因は、図示されない支持ばね１１の弾性率の変化、振動によるコア２１の位置の変化、などである。 The second processing circuit 36 calculates the machine error τ. The second processing circuit 36, by using the first correction voltage and mechanical error tau, calculates a second correction voltage V 3. The mechanical error τ is an error of the voltage value generated by a mechanical factor. For example, mechanical factors include changes in the elastic modulus of the support spring 11 (not shown), changes in the position of the core 21 due to vibration, and the like.
　変位測定器１２は、コア２１の位置に対応する第２補正電圧Ｖ３を制御装置５へ出力する。 Displacement measuring device 12 outputs the second correction voltage V 3 corresponding to the position of the core 21 to the controller 5.
　励磁コイル２２は、交流電流の励磁電圧Ｖｉｎ´に対応する磁場を発生させる。当該磁場は、計測コイル２３と参照コイル２４とに電磁誘導を発生させる。当該電磁誘導によって計測コイル２３に発生する誘導起電力は、計測電圧Ｖ１である。当該電磁誘導によって参照コイル２４に発生する誘導起電力は、参照電圧ＶＴである。 The exciting coil 22 generates a corresponding magnetic field in the excitation voltage V in 'of the alternating current. The magnetic field causes electromagnetic induction in the measuring coil 23 and the reference coil 24. Induced electromotive force generated in the measuring coil 23 by the electromagnetic induction is measured voltages V 1. Induced electromotive force generated in the reference coil 24 by the electromagnetic induction is the reference voltage V T.
　第１処理回路３５は、計測電圧Ｖ１の値と参照電圧ＶＴの値とを用いて、第１補正電圧Ｖ２を演算する。第２処理回路３６は、第１補正電圧Ｖ２の値と機械誤差τとを用いて、第２補正電圧Ｖ３を演算する。第２処理回路３６は、第２補正電圧Ｖ３を制御装置５へ出力する。 The first processing circuit 35, by using the value of the reference voltage V T with the value of the measured voltage V 1, and calculates the first correction voltage V 2. The second processing circuit 36 calculates the second correction voltage V 3 by using the value of the first correction voltage V 2 and the mechanical error τ. The second processing circuit 36 outputs the second correction voltage V 3 to the control device 5.
　制御装置５は、複数の秤装置の各々から第２補正電圧Ｖ３の情報を取得する。制御装置５は、第２補正電圧Ｖ３の情報を用いて、複数の秤装置１０の各々に加えられる荷重を演算する。 The control device 5 acquires information on the second correction voltage V 3 from each of the plurality of weighing devices. Control unit 5, by using the information of the second correction voltage V 3, and calculates the load applied to each of the plurality of weighing device 10.
　次に、図３を用いて、変位測定器１２が行う演算処理を説明する。
　図３は実施の形態１におけるエレベーターのかごの秤装置のブロック図である。 Next, the arithmetic processing performed by the displacement measuring instrument 12 will be described with reference to FIG.
FIG. 3 is a block diagram of the elevator car weighing device according to the first embodiment.
　図３に示されるように、差動トランス２０は、励磁電圧Ｖｉｎ´が入力された場合、計測電圧Ｖ１と参照電圧ＶＴとを出力する。 As shown in FIG. 3, the differential transformer 20, if the excitation voltage V in 'is input, and outputs the reference voltage V T and the measured voltage V 1.
　例えば、計測電圧Ｖ１は、励磁電圧Ｖｉｎ´に比例定数β１で比例する。比例定数β１は、計測コイル２３の内部領域に存在するコア２１の体積と差動トランス２０の周辺温度とによって変化する。例えば、計測コイル２３の内部領域に存在するコア２１の体積が増加する場合、比例定数β１は、大きくなる。 For example, the measured voltage V 1 is proportional to the exciting voltage V in ′ with a proportionality constant β 1 . The proportionality constant β 1 changes depending on the volume of the core 21 existing in the internal region of the measuring coil 23 and the ambient temperature of the differential transformer 20. For example, when the volume of the core 21 existing in the internal region of the measuring coil 23 increases, the proportionality constant β 1 becomes large.
　参照電圧ＶＴは、励磁電圧Ｖｉｎ´に比例定数β２で比例する。比例定数β２は、励磁コイル２２と参照コイル２４との相互インダクタンスである。比例定数β２は、差動トランス２０の周辺温度によって変化する。 The reference voltage VT is proportional to the exciting voltage V in ′ with a proportionality constant β 2 . The proportionality constant β 2 is the mutual inductance between the exciting coil 22 and the reference coil 24. The proportionality constant β 2 changes depending on the ambient temperature of the differential transformer 20.
　第１処理回路３５は、差動トランス２０の周辺温度が計測電圧Ｖ１に与える影響を補正する。第１処理回路３５は、参照電圧ＶＴを用いて、温度補正値αＴを演算する。温度補正値αＴは、参照電圧ＶＴの値の関数である。第１処理回路３５は、計測電圧Ｖ１の値と温度補正値αＴとの値の和を演算する。第１処理回路３５は、当該和の値を第１補正電圧Ｖ２とする。第１処理回路３５は、第１補正電圧Ｖ２を第２処理回路３６へ出力する。
　　Ｖ２＝Ｖ１＋αＴ　　　　（１） The first processing circuit 35, the ambient temperature of the differential transformer 20 to correct the influence of the measuring voltage V 1. The first processing circuit 35 uses the reference voltage V T, calculates a temperature correction value alpha T. Temperature correction value alpha T is a function of the value of the reference voltage V T. The first processing circuit 35 calculates the sum of the values of the measured voltage V 1 and the temperature correction value α T. The first processing circuit 35, the value of the sum and the first correction voltage V 2. The first processing circuit 35 outputs the first correction voltage V 2 to the second processing circuit 36.
V 2 = V 1 + α T (1)
　第１処理回路３５は、保守点検のとき、点検回数に対応する参照電圧ＶＴの情報を記憶部に記憶させる。例えば、第１処理回路３５は、参照電圧ＶＴ（ｎ）の値を記憶部に記憶させる。参照電圧ＶＴ（ｎ）の値は、ｎ回目の保守点検における参照電圧ＶＴ（ｎ）の値と定義される。 The first processing circuit 35, when the maintenance, and stores the information of the reference voltage V T corresponding to the check number in the storage unit. For example, the first processing circuit 35 stores the value of the reference voltage VT (n) in the storage unit. The value of the reference voltage V T (n) is defined as the value of the reference voltage V T (n) in the n th maintenance.
　第２処理回路３６は、第１補正電圧Ｖ２の値と機械誤差τの値との和を演算する。第２処理回路３６は、当該和の値を第２補正電圧Ｖ３とする。
　　Ｖ３＝Ｖ２＋τ
　　　　＝Ｖ１＋αＴ＋τ　　（２） The second processing circuit 36 calculates the sum of the value of the first correction voltage V 2 and the value of the mechanical error τ. The second processing circuit 36, the value of the sum and the second correction voltage V 3.
V 3 = V 2 + τ
= V 1 + α T + τ (2)
　第２処理回路３６は、保守点検のとき、点検荷重に対応する第１補正電圧Ｖ２の情報を記憶部に記憶させる。例えば、第２処理回路３６は、第１点検電圧Ｖ２（ｎ，Ｘ）の値を記憶部に記憶させる。第１点検電圧Ｖ２（ｎ，Ｘ）の値は、ｎ回目の保守点検において点検荷重Ｘｋｇを加えた時の第１補正電圧Ｖ２の値と定義される。 At the time of maintenance and inspection, the second processing circuit 36 stores the information of the first correction voltage V 2 corresponding to the inspection load in the storage unit. For example, the second processing circuit 36 stores the value of the first inspection voltage V 2 (n, X) in the storage unit. The value of the first inspection voltage V 2 (n, X) is defined as the value of the first correction voltage V 2 when the inspection load X kg is applied in the nth maintenance inspection.
　例えば、第２処理回路３６は、Ｖ２（ｎ，Ｘ）の値とＶ２（ｎ－１，Ｘ）の値とが等しいか否かを判定する。例えば、Ｖ２（ｎ，Ｘ）の値とＶ２（ｎ－１，Ｘ）の値とが等しくない場合、第２処理回路３６は、第１点検電圧Ｖ２（ｎ，Ｘ）の値を用いて、機械誤差τを演算する。第２処理回路３６は、点検荷重が等しい直近２回分の点検電圧の値の差を演算する。第２処理回路３６は、当該差の値を機械誤差τとする。例えば、第２処理回路３６は、過去に測定されたＶ２（ｎ，Ｘ）の値とＶ２（ｎ－１，Ｘ）の値との差を機械誤差τとする。
　　τ＝Ｖ２（ｎ，Ｘ）－Ｖ２（ｎ－１，Ｘ）　　　（３） For example, the second processing circuit 36 determines whether or not the value of V 2 (n, X) and the value of V 2 (n-1, X) are equal. For example, if the value of V 2 (n, X) and the value of V 2 (n-1, X) are not equal, the second processing circuit 36 sets the value of the first inspection voltage V 2 (n, X). Use to calculate the machine error τ. The second processing circuit 36 calculates the difference between the values of the inspection voltages for the last two inspections having the same inspection load. The second processing circuit 36 uses the value of the difference as the mechanical error τ. For example, in the second processing circuit 36, the difference between the value of V 2 (n, X) measured in the past and the value of V 2 (n-1, X) is defined as the mechanical error τ.
τ = V 2 (n, X) -V 2 (n-1, X) (3)
　第２処理回路３６は、第１補正電圧Ｖ２の値と機械誤差τとの和を演算する。第２処理回路３６は、当該和を第２補正電圧Ｖ３とする。 The second processing circuit 36 calculates the sum of the value of the first correction voltage V 2 and the mechanical error τ. The second processing circuit 36 the sum and the second correction voltage V 3.
　第２処理回路３６は、保守点検のとき、点検荷重に対応する第２補正電圧Ｖ３の情報を記憶部に記憶させる。例えば、第２処理回路３６は、第２点検電圧Ｖ３（Ｘ）の値を記憶部に記憶させる。第２点検電圧Ｖ３（Ｘ）は、点検荷重Ｘｋｇを加えた時の第２補正電圧Ｖ３の値と定義される。 The second processing circuit 36, when the maintenance, and stores the information of the second correction voltage V 3 corresponding to the check load in the storage unit. For example, the second processing circuit 36 stores the value of the second inspection voltage V 3 (X) in the storage unit. The second inspection voltage V 3 (X) is defined as the value of the second correction voltage V 3 when the inspection load X kg is applied.
　次に、図４を用いて、複数の秤装置１０の各々の構成を説明する。
　図４は実施の形態１におけるエレベーターのかごの秤装置の平面図である。 Next, the configuration of each of the plurality of weighing devices 10 will be described with reference to FIG.
FIG. 4 is a plan view of the elevator car weighing device according to the first embodiment.
　図４に示されるように、支持ばね１１は、かご床３ａの下面に接続される。支持ばね１１は、床受枠４の上面に接続される。 As shown in FIG. 4, the support spring 11 is connected to the lower surface of the car floor 3a. The support spring 11 is connected to the upper surface of the floor receiving frame 4.
　コア２１は、治具を介してかご床３ａの下面に接続される。変位測定器１２は、床受枠４に接続される。基盤３０は、変位測定器１２の側方に設けられる。 The core 21 is connected to the lower surface of the car floor 3a via a jig. The displacement measuring instrument 12 is connected to the floor receiving frame 4. The base 30 is provided on the side of the displacement measuring instrument 12.
　コア２１は、一部が変位測定器１２の内部に存在する。かご床３ａが床受枠４に対して下方へ移動する場合、コア２１は、変位測定器１２に対して下方へ移動する。 A part of the core 21 exists inside the displacement measuring instrument 12. When the car floor 3a moves downward with respect to the floor receiving frame 4, the core 21 moves downward with respect to the displacement measuring instrument 12.
　次に、図５を用いて、基盤３０の保守点検時の処理を説明する。例えば、保守点検は、かご床３ａに負荷をかけずに実施される。
　図５は実施の形態１におけるエレベーターのかごの秤装置の保守点検時の動作の概要を説明するためのフローチャートである。 Next, the process at the time of maintenance and inspection of the board 30 will be described with reference to FIG. For example, the maintenance inspection is carried out without imposing a load on the car floor 3a.
FIG. 5 is a flowchart for explaining an outline of the operation at the time of maintenance and inspection of the elevator car weighing device according to the first embodiment.
　ステップＳ００１において、基盤３０は、エレベーターの据付作業が終了しているか否かを判定する。 In step S001, the base 30 determines whether or not the elevator installation work has been completed.
　ステップＳ００１で、エレベーターの据付作業が終了していない場合、ステップＳ００２の動作が行われる。ステップＳ００２において、エレベーターの据付作業が行われる。 If the elevator installation work has not been completed in step S001, the operation of step S002 is performed. In step S002, the elevator installation work is performed.
　その後、ステップＳ００３の動作が行われる。ステップＳ００３において、基盤３０と第２処理回路３６とは、無負荷状態の信号を記憶部に記憶させる。基盤３０は、据付時における参照電圧ＶＴ（０）を記憶部に記憶させる。第２処理回路３６は、据付時における無負荷状態の第１補正電圧Ｖ２（０，０）の値を記憶部に記憶させる。基盤３０は、無負荷状態の第２補正電圧Ｖ３（０）の値を記憶部に記憶させる。 After that, the operation of step S003 is performed. In step S003, the board 30 and the second processing circuit 36 store the signal in the no-load state in the storage unit. Base 30 stores reference during installation voltage V T a (0) in the storage unit. The second processing circuit 36 stores the value of the first correction voltage V 2 (0, 0) in the no-load state at the time of installation in the storage unit. The board 30 stores the value of the second correction voltage V 3 (0) in the no-load state in the storage unit.
　その後、基盤３０は、処理を終了する。 After that, the base 30 ends the processing.
　ステップＳ００１で、エレベーターの据付作業が終了している場合、ステップＳ００４の動作が行われる。ステップＳ００４において、秤装置１０は、通常運転による動作を行う。 If the elevator installation work has been completed in step S001, the operation of step S004 is performed. In step S004, the weighing device 10 operates by normal operation.
　その後、ステップＳ００５の動作が行われる。ステップＳ００５において、第１処理回路３５は、設定電圧Ｖｉｎと励磁電圧Ｖｉｎ´との値が一致するか否かを判定する。 After that, the operation of step S005 is performed. In step S005, the first processing circuit 35 determines whether or not the value of the set voltage V in and the excitation voltage V in 'matches.
　ステップＳ００５で、設定電圧Ｖｉｎと励磁電圧Ｖｉｎ´との値が一致しない場合、ステップＳ００６の動作が行われる。ステップＳ００６において、第１処理回路３５は、励磁電圧Ｖｉｎ´の値と電源補正値ΔＶｉｎとの和を励磁電源３１の電圧値に設定する。 In step S005, if the value of the set voltage V in and the excitation voltage V in 'do not match, the operation of step S006 is performed. In step S006, the first processing circuit 35 sets the sum of the value and the power correction value [Delta] V in the excitation voltage V in 'to the voltage value of the excitation power supply 31.
　ステップＳ００５で設定電圧Ｖｉｎと励磁電圧Ｖｉｎ´との値が一致する場合、またはステップＳ００６の動作が行われた場合、ステップＳ００７の動作が行われる。ステップＳ００７において、基盤３０は、作業員が保守点検を開始したか否かを判定する。 If the value of the set voltage V in and the excitation voltage V in 'at step S005 matches, or if the operation of step S006 is performed, the operation of step S007 is performed. In step S007, the board 30 determines whether or not the worker has started the maintenance inspection.
　ステップ００７で作業員が保守点検を開始していない場合、ステップＳ００５以降の動作が行われる。 If the worker has not started maintenance and inspection in step 007, the operations after step S005 are performed.
　ステップＳ００７で作業員が保守点検を開始した場合、ステップＳ００８の動作が行われる。ステップＳ００８において、第２処理回路３６は、図示されない保守端末から保守情報を受け取る。第１処理回路３５は、保守点検時の参照電圧ＶＴ（ｎ）の値と据付時の参照電圧ＶＴ（０）の値とが等しいか否かを判定する。 When the worker starts the maintenance and inspection in step S007, the operation of step S008 is performed. In step S008, the second processing circuit 36 receives maintenance information from a maintenance terminal (not shown). The first processing circuit 35 determines whether or not the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) are equal.
　ステップＳ００８で、保守点検時の参照電圧ＶＴ（ｎ）の値と据付時の参照電圧ＶＴ（０）の値とが等しくない場合、ステップＳ００９の動作が行われる。ステップＳ００９において、第１処理回路３５は、ＶＴ（ｎ）の値を用いて温度補正値αＴを演算する。第１処理回路３５は、計測電圧Ｖ１の値と温度補正値αＴとの和を第１補正電圧Ｖ２とする。 In step S008, if the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) is not equal, the operation of step S009 is performed. In step S009, the first processing circuit 35 calculates the temperature correction value alpha T using the value of V T (n). In the first processing circuit 35, the sum of the value of the measured voltage V 1 and the temperature correction value α T is defined as the first correction voltage V 2 .
　その後、ステップＳ０１０の動作が行われる。ステップＳ０１０において、第２処理回路３６は、Ｖ２（ｎ，０）の値とＶ２（ｎ－１，０）の値とが等しいか否かを判定する。 After that, the operation of step S010 is performed. In step S010, the second processing circuit 36 determines whether or not the value of V 2 (n, 0) and the value of V 2 (n-1, 0) are equal to each other.
　ステップＳ０１０で、Ｖ２（ｎ，０）の値とＶ２（ｎ－１，０）の値とが等しくない場合、ステップＳ０１１の動作が行われる。ステップＳ０１１において、第２処理回路３６は、Ｖ２（ｎ，０）とＶ２（ｎ－１，０）との差を機械誤差τとする。第２処理回路３６は、第１補正電圧Ｖ２と機械誤差τとの和を第２補正電圧Ｖ３とする。 If the value of V 2 (n, 0) and the value of V 2 (n-1, 0) are not equal in step S010, the operation of step S011 is performed. In step S011, the second processing circuit 36 sets the difference between V 2 (n, 0) and V 2 (n-1, 0) as the mechanical error τ. In the second processing circuit 36, the sum of the first correction voltage V 2 and the mechanical error τ is defined as the second correction voltage V 3 .
　その後、ステップＳ０１２の動作が行われる。ステップＳ０１２において、第２処理回路３６は、記憶部に記憶されている無負荷状態の第２補正電圧Ｖ３（０）の値を第２補正電圧Ｖ３の値に書き換える。 After that, the operation of step S012 is performed. In step S012, the second processing circuit 36 rewrites the value of the second correction voltage V 3 (0) in the no-load state stored in the storage unit to the value of the second correction voltage V 3.
　その後、基盤３０は処理を終了する。 After that, the base 30 ends the processing.
　ステップＳ００８で、保守点検時の参照電圧ＶＴ（ｎ）の値と据付時の参照電圧ＶＴ（０）の値とが等しい場合、ステップＳ０１３の動作が行われる。ステップＳ０１３において、第１処理回路３５は、計測電圧Ｖ１の値を第１補正電圧Ｖ２とする。 In step S008, if the value of the maintenance time of the reference voltage V T (n) and the value of the installation time of the reference voltage V T (0) are equal, the operation of step S013 is performed. In step S013, the first processing circuit 35 sets the value of the measured voltage V 1 as the first correction voltage V 2 .
　その後、ステップＳ０１０以降の処理が行われる。 After that, the processing after step S010 is performed.
　ステップＳ０１０で、Ｖ２（ｎ，０）の値とＶ２（ｎ－１，０）の値とが等しい場合、ステップＳ０１４の動作が行われる。ステップＳ０１４において、第２処理回路３６は、第１補正電圧Ｖ２の値を第２補正電圧Ｖ３とする。 If the value of V 2 (n, 0) and the value of V 2 (n-1, 0) are equal in step S010, the operation of step S014 is performed. In step S014, the second processing circuit 36 sets the value of the first correction voltage V 2 to the second correction voltage V 3 .
　その後、ステップＳ０１２以降の処理が行われる。 After that, the processing after step S012 is performed.
　以上で説明した実施の形態１によれば、複数の秤装置１０の各々は、差動トランス２０と第１処理回路３５とを備える。差動トランス２０は、コア２１と１つの励磁コイル２２と計測コイル２３と参照コイル２４とを備える。計測コイル２３と参照コイル２４とは、鉛直方向に並んで設けられる。このため、複数の秤装置１０は、水平方向の寸法を小さくすることが出来る。第１処理回路３５は、参照電圧ＶＴの値を用いて、温度補正値αＴを演算する。第１処理回路３５は、計測電圧Ｖ１の値と温度補正値αＴとの和を第１補正電圧Ｖ２とする。その結果、秤装置１０は、周辺温度の変化による計測荷重の誤差を抑制できる。 According to the first embodiment described above, each of the plurality of weighing devices 10 includes a differential transformer 20 and a first processing circuit 35. The differential transformer 20 includes a core 21, one exciting coil 22, a measuring coil 23, and a reference coil 24. The measuring coil 23 and the reference coil 24 are provided side by side in the vertical direction. Therefore, the plurality of weighing devices 10 can reduce the horizontal dimension. The first processing circuit 35 uses the value of the reference voltage V T, calculates a temperature correction value alpha T. In the first processing circuit 35, the sum of the value of the measured voltage V 1 and the temperature correction value α T is defined as the first correction voltage V 2 . As a result, the weighing device 10 can suppress an error in the measured load due to a change in the ambient temperature.
　また、複数の秤装置１０の各々は、電源装置として、励磁電源３１を備える。複数の秤装置１０の各々は、第２処理回路３６を備える。第２処理回路３６は、励磁電圧Ｖｉｎ´が一定の値になるように、電源装置のフィードバック制御を行う。このため、秤装置１０は、電源電圧の変動による計測荷重の誤差を小さくすることができる。 Further, each of the plurality of weighing devices 10 includes an exciting power supply 31 as a power supply device. Each of the plurality of weighing devices 10 includes a second processing circuit 36. The second processing circuit 36, as excitation voltage V in 'is a constant value, performs feedback control of the power supply. Therefore, the weighing device 10 can reduce the error of the measured load due to the fluctuation of the power supply voltage.
　また、複数の秤装置１０の各々は、第２処理回路３６を備える。第２処理回路３６は、過去に測定された複数の第１補正電圧Ｖ２の値を用いて、機械誤差τを演算する。第２処理回路３６は、第１補正電圧Ｖ２の値と機械誤差τとの和を第２補正電圧Ｖ３とする。このため、秤装置１０は、機械的な要因で発生する計測荷重の誤差を小さくすることができる。 Further, each of the plurality of weighing devices 10 includes a second processing circuit 36. The second processing circuit 36 calculates the mechanical error τ using the values of the plurality of first correction voltages V 2 measured in the past. In the second processing circuit 36, the sum of the value of the first correction voltage V 2 and the mechanical error τ is taken as the second correction voltage V 3 . Therefore, the weighing device 10 can reduce the error of the measured load generated by the mechanical factor.
　また、第２処理回路３６は、複数の第１補正電圧Ｖ２の値を用いて、機械誤差τを演算する。第１補正電圧Ｖ２は、計測電圧Ｖ１から算出される。従って、第２処理回路３６は、計測コイル２３によって過去に測定された複数の計測電圧Ｖ１を用いて、機械誤差τを演算する。このため、秤装置１０は、機械的な要因で発生する計測荷重の誤差を小さくすることができる。 Further, the second processing circuit 36 calculates the mechanical error τ using the values of the plurality of first correction voltages V 2. The first correction voltage V 2 is calculated from the measured voltage V 1. Accordingly, the second processing circuit 36, by using a plurality of measurement voltages V 1 measured in the past by the measuring coil 23, calculates the mechanical error tau. Therefore, the weighing device 10 can reduce the error of the measured load generated by the mechanical factor.
　なお、コア２１の材質は、非磁性体の金属でもよい。例えば、コア２１の材質は、アルミ、銅、真鍮などである。 The material of the core 21 may be a non-magnetic metal. For example, the material of the core 21 is aluminum, copper, brass, or the like.
　以上のように、本開示に係るエレベーターのかごの秤装置は、エレベーターシステムに利用できる。 As described above, the elevator car weighing device according to the present disclosure can be used for the elevator system.
　１　かご、　２　かご枠、　２ａ　下枠、　２ｂ　縦枠、　２ｃ　上枠、　３　かご室、　３ａ　かご床、　３ｂ　かご側面、　３ｃ　かご天井、　４　床受枠、　５　制御装置、　１０　秤装置、　１１　支持ばね、　１２　変位測定器、　２０　差動トランス、　２１　コア、　２２　励磁コイル、　２３　計測コイル、　２４　参照コイル、　３０　基盤、　３１　励磁電源、　３２　励磁電圧端子、　３３　計測電圧端子、　３４　参照電圧端子、　３５　第１処理回路、　３６　第２処理回路 1 car, 2 car frame, 2a lower frame, 2b vertical frame, 2c upper frame, 3 car room, 3a car floor, 3b car side, 3c car ceiling, 4 floor receiving frame, 5 control device, 10 weighing device, 11 support spring , 12 displacement measuring instrument, 20 differential transformer, 21 core, 22 exciting coil, 23 measuring coil, 24 reference coil, 30 board, 31 exciting power supply, 32 exciting voltage terminal, 33 measurement voltage terminal, 34 reference voltage terminal, 35th 1 processing circuit, 36 2nd processing circuit

Claims (5)

  1. 　エレベーターのかご床と連動して位置を変えるコアと、
    　電流を流されることで磁場を形成する１つの励磁コイルと、
    　前記１つの励磁コイルに隣接し、前記コアの一部を囲むように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される計測コイルと、
    　前記１つの励磁コイルに隣接し、前記コアが内部を移動しないように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される参照コイルと、
    　前記参照コイルで測定された参照電圧の値を用いて温度補正値を演算し、前記計測コイルで測定された計測電圧の値と前記温度補正値との和を第１補正電圧の値とする第１処理回路と、
    を備えたエレベーターのかごの秤装置。     A core that changes its position in conjunction with the elevator car floor,
    One exciting coil that forms a magnetic field by passing an electric current,
    A measuring coil that is adjacent to the one exciting coil and is provided so as to surround a part of the core, and in which an induced electromotive force is induced when the one exciting coil forms a magnetic field,
    A reference coil adjacent to the one exciting coil, the core of which is provided so as not to move inside, and a reference coil in which an induced electromotive force is induced when the one exciting coil forms a magnetic field.
    The temperature correction value is calculated using the value of the reference voltage measured by the reference coil, and the sum of the value of the measurement voltage measured by the measurement coil and the temperature correction value is set as the value of the first correction voltage. 1 processing circuit and
    Elevator basket weighing device equipped with.
  2. 　前記１つの励磁コイルに電流を流す電源装置を備え、
    　前記第１処理回路は、前記電源装置が前記１つの励磁コイルに与える励磁電圧の値を測定し、前記励磁電圧の値が一定の値になるよう前記電源装置のフィードバック制御を行う請求項１に記載のエレベーターのかごの秤装置。     A power supply device for passing an electric current through the one exciting coil is provided.
    The first processing circuit measures the value of the exciting voltage given to the one exciting coil by the power supply device, and performs feedback control of the power supply device so that the value of the exciting voltage becomes a constant value according to claim 1. The described elevator car weighing device.
  3. 　過去に測定された複数の前記第１補正電圧の値を用いて、機械的な要因で発生する電圧値の誤差である機械誤差を演算し、前記第１補正電圧の値と前記機械誤差との和を第２補正電圧とする第２処理回路を備えた請求項１または請求項２のいずれかに記載のエレベーターのかごの秤装置。 Using the plurality of values of the first correction voltage measured in the past, a mechanical error which is an error of the voltage value generated by a mechanical factor is calculated, and the value of the first correction voltage and the mechanical error are calculated. The weighing device for an elevator car according to claim 1 or 2, further comprising a second processing circuit having a sum as a second correction voltage.
  4. 　エレベーターのかご床と連動して位置を変えるコアと、
    　電流を流されることで磁場を形成する１つの励磁コイルと、
    　前記１つの励磁コイルに隣接し、前記コアの一部を囲むよう設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される計測コイルと、
    　前記１つの励磁コイルに隣接し、前記コアが内部を移動しないように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される参照コイルと、
    　前記１つの励磁コイルに電流を流す電源装置と、
    　前記電源装置が前記１つの励磁コイルに与える励磁電圧の値を測定し、前記励磁電圧の値が一定の値になるよう前記電源装置のフィードバック制御を行う第１処理回路と、
    を備えたエレベーターのかごの秤装置。     A core that changes its position in conjunction with the elevator car floor,
    One exciting coil that forms a magnetic field by passing an electric current,
    A measuring coil that is adjacent to the one exciting coil and is provided so as to surround a part of the core, and in which an induced electromotive force is induced when the one exciting coil forms a magnetic field,
    A reference coil adjacent to the one exciting coil, the core of which is provided so as not to move inside, and a reference coil in which an induced electromotive force is induced when the one exciting coil forms a magnetic field.
    A power supply device that allows current to flow through the one exciting coil,
    A first processing circuit that measures the value of the exciting voltage given to the one exciting coil by the power supply device and performs feedback control of the power supply device so that the value of the exciting voltage becomes a constant value.
    Elevator basket weighing device equipped with.
  5. 　エレベーターのかご床と連動して位置を変えるコアと、
    　電流を流されることで磁場を形成する１つの励磁コイルと、
    　前記１つの励磁コイルに隣接し、前記コアの一部を囲むよう設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される計測コイルと、
    　前記１つの励磁コイルに隣接し、前記コアが内部を移動しないように設けられ、前記１つの励磁コイルが磁場を形成した場合、誘導起電力が誘起される参照コイルと、
    　前記計測コイルによって過去に測定された複数の計測電圧の値を用いて、機械的な要因で発生する電圧値の誤差である機械誤差を演算し、前記計測電圧の値と前記機械誤差の値との和を第２補正電圧とする第２処理回路と、
    を備えたエレベーターのかごの秤装置。     A core that changes its position in conjunction with the elevator car floor,
    One exciting coil that forms a magnetic field by passing an electric current,
    A measuring coil that is adjacent to the one exciting coil and is provided so as to surround a part of the core, and in which an induced electromotive force is induced when the one exciting coil forms a magnetic field,
    A reference coil adjacent to the one exciting coil, the core of which is provided so as not to move inside, and a reference coil in which an induced electromotive force is induced when the one exciting coil forms a magnetic field.
    Using the values of a plurality of measured voltages measured in the past by the measuring coil, a mechanical error, which is an error of the voltage value generated by a mechanical factor, is calculated, and the measured voltage value and the mechanical error value are calculated. A second processing circuit whose second correction voltage is the sum of
    Elevator basket weighing device equipped with.
PCT/JP2020/022014 2020-06-03 2020-06-03 Elevator car weighing device WO2021245855A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108960U (en) * 1976-02-16 1977-08-18
JPH01152316A (en) * 1987-12-09 1989-06-14 Mitsubishi Electric Corp Load detector for elevator
WO2002064478A1 (en) * 2001-02-09 2002-08-22 Mitsubishi Denki Kabushiki Kaisha Weight detector for elevator
JP2011051764A (en) * 2009-09-03 2011-03-17 Toshiba Elevator Co Ltd Elevator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108960U (en) * 1976-02-16 1977-08-18
JPH01152316A (en) * 1987-12-09 1989-06-14 Mitsubishi Electric Corp Load detector for elevator
WO2002064478A1 (en) * 2001-02-09 2002-08-22 Mitsubishi Denki Kabushiki Kaisha Weight detector for elevator
JP2011051764A (en) * 2009-09-03 2011-03-17 Toshiba Elevator Co Ltd Elevator

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