Patents Assigned to Mitsubishi Electric Building Techno-Service Co., Ltd.
  • Publication number: 20220381397
    Abstract: There is provided a mounting tool for an elevator rope tension measurement device, the mounting tool being capable of preventing the rope tension measurement device from interfering with a rope disposed adjacently to a rope that is a measurement target. A mounting tool for an elevator rope tension measurement device includes: a first holding body configured to hold a rope of an elevator; a second holding body configured to hold a rope tension measurement device that measures a tension of the rope; and a connecting body configured to connect the first holding body with the second holding body so as to dispose the rope tension measurement device at a position away from the rope.
    Type: Application
    Filed: July 3, 2020
    Publication date: December 1, 2022
    Applicants: Mitsubishi Electric Building Techno-Service Co., Ltd., Mitsubishi Electric Corporation
    Inventors: Kotaro WATANABE, Tetsuro SEKI, Sunao FUJIWARA, Yoshiko ONO, Tetsushi MORIKAWA, Takuya HASHIGUCHI, Hiroshi FUKUNAGA, Yasuyuki KOIDE
  • Publication number: 20220356046
    Abstract: There is provided an elevator rope tension measurement system that can reduce measurement error when the tension of the rope of an elevator is quantitatively measured. An elevator rope tension measurement system includes a vibration waveform collection unit configured to collect a vibration waveform of a rope of an elevator; and a frequency calculation unit configured to select, based on a measurement resolution calculated from a collection time period and a collection cycle for collecting the vibration waveform by the vibration waveform collection unit, a method for calculating a frequency of the vibration waveform collected by the vibration waveform collection unit.
    Type: Application
    Filed: September 30, 2019
    Publication date: November 10, 2022
    Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Kiyotaka WATANABE, Takuya HASHIGUCHI, Takaya TANIGUCHI, Seiichi KUMAGAI, Yoshiko ONO, Kotaro WATANABE, Kyohei YAMANAKA
  • Publication number: 20220348436
    Abstract: There is provided a building facility vibration measurement device that can easily ascertain whether specs are sufficient for measurement of vibration of a building facility. A building facility vibration measurement device includes: an acceleration detection unit configured to detect acceleration; an acceleration collection unit configured to collect the acceleration detected by the acceleration detection unit; an accuracy calculation unit configured to calculate detection accuracy of the acceleration from information on the acceleration collected by the acceleration collection unit; and a judgement unit configured to, based on the detection accuracy calculated by the accuracy calculation unit, judge whether vibration of a building facility can be measured.
    Type: Application
    Filed: September 30, 2019
    Publication date: November 3, 2022
    Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Takaya TANIGUCHI, Takuya HASHIGUCHI, Kiyotaka WATANABE, Yoshiko ONO, Kotaro WATANABE
  • Publication number: 20220229835
    Abstract: There is provided a database language re-issue device capable of appropriately obtaining data from a database. The database language re-issue device extracts a data obtainment target, a data request period and a data item from a query issued by an application, obtains information about a collection program of the extracted data obtainment target for the data request period, obtains definition information of a table for the obtained collection program, changes the data item in the query to a data item for the data request period based on the obtained definition information of the table, executes a query to a database based on the changed data item, and returns obtained data from the database to the application, the data being based on the executed query.
    Type: Application
    Filed: June 5, 2019
    Publication date: July 21, 2022
    Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Rika KAWABATA, Koji SAKATA, Satoshi SHIGA
  • Publication number: 20210398298
    Abstract: A person tracking support device includes a processor. The processor acquires identification information of a tracked person identified from a face image of a person imaged by a first camera, and a first time at which the tracked person is imaged by the first camera, and also acquires a second time at which the tracked person is imaged by a second camera positioned away from the first camera, predicts a time at which the tracked person reaches a specific area on the basis of an elapsed time from the first time to the second time and a distance from the first camera to the second camera, and notifies a mobile terminal device possessed by each of a plurality of observers of the identification information of the tracked person, the specific area, and the time predicted.
    Type: Application
    Filed: June 10, 2021
    Publication date: December 23, 2021
    Applicant: MITSUBISHI ELECTRIC BUILDING TECHNO-SERVICE CO., LTD.
    Inventor: Naohiro KISARA
  • Publication number: 20210269281
    Abstract: An object of the present invention is to provide a brake device deterioration prediction system capable of accurately predicting a deterioration time of a brake device. The brake device deterioration prediction system includes an observation unit, a conversion unit, a generation unit, and a prediction unit. The observation unit acquires operation data regarding the operation of the brake device when the brake device operates. The conversion unit converts the operation data into index data indicating deterioration of the brake device for each preset unit of time. The generation unit generates a deterioration model including a trend component showing a trend of long-term change and a periodic component showing a periodic change, as a model showing a change-with-time of deterioration represented by the index data. The prediction unit predicts the deterioration time of the brake device based on the deterioration model.
    Type: Application
    Filed: October 19, 2018
    Publication date: September 2, 2021
    Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yasuhiro TOYAMA, Koji SAKATA, Satoshi SHIGA
  • Publication number: 20160054018
    Abstract: An air-conditioning system control apparatus capable of, even for a room in which a humidity sensor is not installed, accurately estimating an indoor humidity and preventing an indoor temperature and humidity from deviating from comfortable ranges. The air-conditioning system control apparatus includes a thermal characteristic parameter setting unit configured to determine a thermal characteristic parameter of a building thermal model based on a heat equation, a humidity characteristic parameter setting unit configured to determine a humidity characteristic parameter of a building humidity model based on a moisture balance equation in an air-conditioned space, and a control data generation unit configured to generate control data of an air-conditioning apparatus so that a temperature and a humidity of the air-conditioned space are each within a preset range.
    Type: Application
    Filed: March 31, 2014
    Publication date: February 25, 2016
    Applicant: MITSUBISHI ELECTRIC BUILDING TECHNO-SERVICE CO., LTD.
    Inventors: Mio MOTODANI, Takaya YAMAMOTO, Yoshitaka UNO, Kazuhiro KOMATSU
  • Patent number: 7784590
    Abstract: In a control operation performed at time of an earthquake or strong wind, when a running elevator is stopped at a nearest floor, the natural frequency of the transverse vibration of a rope is prevented from resonating with the natural frequency of the building, and thereby an increase in transverse vibration of the rope is restrained. In the control operation, when a shake of the building caused by earthquake or strong wind is detected, a running elevator is stopped at the nearest floor, or an elevator passing through an express zone is stopped emergently and runs at a low speed to the nearest floor, the natural frequency of the transverse vibration of the rope is compared with the natural frequency of the building, and the car stop position is selected at a non-resonance position to prevent the natural frequency of the transverse vibration of the rope from resonating with the natural frequency of the building.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: August 31, 2010
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Seiji Watanabe, Daiki Fukui, Takashi Yumura, Hideki Nishiyama, Hideki Shiozaki
  • Patent number: 7658268
    Abstract: A control device for a rotating machine driving an elevator suppresses increases in the moving time of the elevator while securing control and stability in accordance with moving direction and load of a car of the elevator. A control device for controlling speed of the rotating machine without using a speed sensor includes a speed command signal generator for generating a rotational speed command for the rotating machine; and a speed sensor-less controller for controlling a voltage applied to the rotating machine without using a speed sensor, based on the rotational speed command from the speed command signal generator. In the control device, the speed command signal generator changes an acceleration running curve in a deceleration interval in accordance with the moving direction and the load of the car of the elevator to generate the rotational speed command.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: February 9, 2010
    Assignees: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Masahiro Fukuta
  • Patent number: 7500652
    Abstract: A hoisting machine for an elevator includes a motor having a motor body and a rotary shaft rotatable with respect to the motor body and a boss, which is a handle fit/removal member and is fixed to the rotary shaft. A manually operated handle for manually rotating the rotary shaft can be removably fitted on the boss. The boss is provided with a rotation prevention portion for preventing, when the manually operated handle is fixed to the boss, the manually operated handle from rotating with respect to the boss in a rotational direction of the rotary shaft.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: March 10, 2009
    Assignees: Mitsubishi Electric Corporation, Mitsubishi Electric Building Techno-Service Co., Ltd
    Inventors: Shigenobu Kawakami, Takayuki Shimizu, Shun-Ichirou Saitou
  • Patent number: 7423401
    Abstract: In an apparatus measuring constants of an induction motor, an inverter converts an inputted voltage command signal into a single-phase AC power and feeds the single-phase AC power to the induction motor, and a currert detector detects a current of the single-phase AC power fed to the induction motor. An apparatus controller generates a voltage command signal corresponding to an AC voltage as applied to the induction motor and outputs the voltage command signal to the inverter and gerates the voltage command signal and controls the inverter to feed the single-phase AC power having a frequency selected in a range equal to or higher than 0.006 Hz and equal to or lower than 1.5 Hz to the induction motor. A constant calculation controller calculates constants of the induction motor based on the voltage and current of the single-phase AC power fed to the induction motor.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: September 9, 2008
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Takahiko Kobayashi, Masahiro Fukuta, Takumi Oonuma
  • Patent number: 7408322
    Abstract: A device for determining a constant of a rotating machine includes: a test number selector outputting a test number n, selected from 1 to N (N?2), and outputting a phase signal q determined by a predetermined condition that is previously set based on the test number n; a tester for supplying an alternating voltage to the rotating machine induction machine based on the test number n and the phase signal q and outputing a reference phase gain and a 90-degree-delay phase gain based on values of the phase signal q corresponding to 1 to N of the test number n; and a rotating machine constant calculator receiving the reference phase gain and the 90-degree-delay phase gain and then calculating a constant of the rotating machine using the reference phase gain and the 90-degree-delay phase gain.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: August 5, 2008
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Masahiro Fukuta
  • Publication number: 20060290338
    Abstract: A device for determining a constant of a rotating machine according to the invention includes: test number selecting means 1 for outputting a test number n, selected from 1 to N (N?2), and outputting a phase signal q determined by a predetermined condition previously set based on the test number n; test means 8 for supplying an alternating voltage to the rotating machine induction machine 5 based on the test number n and the phase signal q and output a reference phase gain and a 90-degree-delay phase gain based on values of the phase signal q corresponding to 1 to N of the test number n; and rotating machine constant calculating means receiving the reference phase gain and the 90-degree-delay phase gain and then calculating a constant of the rotating machine using induction machine 5 the reference phase gain and the 90-degree-delay phase gain.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 28, 2006
    Applicants: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshihiko Kinpara, Masahiro Fukuta
  • Patent number: 5933793
    Abstract: An outgoing harmonic level evaluator which evaluates the amount of outgoing harmonics by computing correction to the amount of harmonics measured at a receiving point without the need for summing the measurement values of generated harmonics in load bus lines.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: August 3, 1999
    Assignee: Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventor: Naoya Yamada
  • Patent number: 5731528
    Abstract: A rope tension measuring apparatus for measuring rope tension of a plurality of main ropes that suspend an elevator car and a counterweight and adjustment quantities of tension adjusting springs for the main ropes. The apparatus comprises a portable measuring device comprising traveling-wave detector means directly attached to the elevator main rope for detecting a traveling wave that is generated by applying an instantaneous displacement to the main rope, traveling-wave passage velocity computing means for measuring the passage velocity of the traveling wave, rope tension computing means for computing the rope tension based on the passage velocity, spring adjustment quantity computing means for computing a spring adjustment quantity for the rope tension adjusting springs, and output means for outputting these computed results, based on the variation of passage velocities of the plurality of main ropes.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: March 24, 1998
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Building Techno-Service Co., Ltd.
    Inventors: Yoshiaki Yamazaki, Hiroki Itakura