Patents Assigned to Azbil Corporation
  • Publication number: 20240070535
    Abstract: A cause estimation system includes a training data acquisition unit that acquires training data in which sensing data is used as an explanatory variable and a flame failure detection cause is used as an objective variable, the sensing data being sensed by a combustion system during a predetermined time period preceding a time when a flame failure is detected based on a flame voltage indicating a main burner's flame state. The cause estimation system further includes a machine learning unit that performs machine learning based on the training data acquired and that constructs an estimation model in which a learning result is reflected, and a cause estimation unit that inputs sensing data sensed by the combustion system during a predetermined time period preceding a new flame failure detection timing into the estimation model and that acquires a new flame failure detection cause output from the estimation model.
    Type: Application
    Filed: June 30, 2023
    Publication date: February 29, 2024
    Applicant: Azbil Corporation
    Inventors: Daisuke OKUMURA, Shigeki ISHII
  • Publication number: 20240035658
    Abstract: To detect a sign of a flame failure that cannot be detected by monitoring a flame voltage and a flame current, a flame monitoring device is provided that includes an information acquisition unit that sequentially acquires a flame level indicating frequency of discharge of a flame detector caused by a flame of a main burner, and a flame level monitoring unit that monitors the flame level sequentially acquired by the information acquisition unit. The flame level monitoring unit detects a sign of a flame failure of the flame by detecting an occurrence of a specific period during which a state in which the flame level is less than a predetermined threshold value continues for a length of time equal to or more than a predetermined period and less than a flame response period.
    Type: Application
    Filed: June 29, 2023
    Publication date: February 1, 2024
    Applicant: Azbil Corporation
    Inventors: Shigeki ISHII, Takeshi NISHIYAMA, Daisuke OKUMURA, Kayo SUZUKI
  • Publication number: 20230393086
    Abstract: A user is allowed to appropriately recognize a malfunction in a combustion device by a combustion monitoring device, which includes an information acquisition unit that acquires a plurality of sets each including an amount of fuel supplied to a main burner of a combustion device and an average value and a variation degree of flame levels when the amount of fuel is supplied to the main burner. The combustion monitoring device further includes information processing unit that executes a process of displaying, on a display, a graph indicating a relation between the amount of fuel and the average value of the flame levels, and a graph indicating a relation between the amount of fuel and the variation degree of the flame levels, based on the plurality of sets acquired by the information acquisition unit.
    Type: Application
    Filed: May 13, 2023
    Publication date: December 7, 2023
    Applicant: Azbil Corporation
    Inventors: Shigeki ISHII, Takeshi NISHIYAMA, Daisuke OKUMURA, Kenichi YAMAGATA
  • Publication number: 20230334978
    Abstract: A closed-space sensor system that enables stable operation in a closed space is provided. The closed-space sensor system includes: a power transmitter of an electromagnetic wave irradiator 440-emitting an electromagnetic wave; and a plurality of sensors, each of which includes an antenna and is driven by converting the electromagnetic wave received via the antenna into electric power. Each of the plurality of sensors may further include a power storage unit and each of the plurality of sensors may start to be driven when a power storage amount in the power storage unit reaches a drive start threshold value that is common to the plurality of sensors. The power transmitter of the electromagnetic wave irradiator and the plurality of sensors may be arranged in a closed space.
    Type: Application
    Filed: September 15, 2021
    Publication date: October 19, 2023
    Applicant: Azbil Corporation
    Inventor: Yoshiaki YAMAGISHI
  • Publication number: 20230235883
    Abstract: To grasp a state of a combustion apparatus based on a flame state of a burner, a discharge number measurement unit measures the number of discharges of a flame sensor per unit time, and a light emission information generation unit generates, as light emission information, information obtained based on a value obtained by dividing a total (accumulation) of the number of discharges per unit time measured by the discharge number measurement unit by a total measurement time, and a display unit displays the light emission information generated by the light emission information generation unit. Since the light emission information corresponds to a combustion amount, a change in a combustion state is capable of being grasped more finely by confirming a change in the light emission information displayed on the display unit, and a fine abnormality in a combustion apparatus is capable of being detected.
    Type: Application
    Filed: December 15, 2022
    Publication date: July 27, 2023
    Applicant: Azbil Corporation
    Inventors: Shigeki ISHII, Daisuke OKUMURA, Takeshi NISHIYAMA
  • Publication number: 20230235880
    Abstract: To grasp a state of a combustion apparatus based on a flame state of a burner, a discharge number measurement unit measures the number of discharges of a flame sensor per unit time. A light emission information generation unit generates, as light emission information, information obtained based on a value obtained by dividing a total (accumulation) of the number of discharges per unit time measured by the discharge number measurement unit by a total measurement time. A determination unit determines the state of the combustion apparatus to be inspected based on the light emission information generated by the light emission information generation unit as described above.
    Type: Application
    Filed: December 15, 2022
    Publication date: July 27, 2023
    Applicant: Azbil Corporation
    Inventors: Shigeki ISHII, Kayo SUZUKI, Kenichi YAMAGATA
  • Publication number: 20220356962
    Abstract: A stick slip detection system includes: an operation data storage unit configured to store a stick slip index, the stick slip index being a ratio of a first state amount based on a displacement of a valve shaft of a valve to be diagnosed to a second state amount based on the displacement; an abnormality diagnosis unit configured to determine whether a stick slip phenomenon occurs in the diagnosis target based on the stick slip index; and a diagnosis operation control unit configured to, when a stepwise change in a control command value in an intermediate opening degree of the valve to be diagnosed is detected, stop a determination operation of the abnormality diagnosis unit. The present disclosure makes it possible to easily reflect knowledge of an expert with respect to a diagnosis target such as a valve in the stick slip detection system and method.
    Type: Application
    Filed: April 19, 2022
    Publication date: November 10, 2022
    Applicant: Azbil Corporation
    Inventors: Koichiro HIRAO, Fumiaki YAMASAKI
  • Patent number: 11268759
    Abstract: An enclosure includes a furnace 1 and plates 7A to 7D arranged in the furnace 1 and used for placement of articles 5. Each of the plates 7A to 7D is movable vertically in the furnace 1. The enclosure further includes guide members 60A and 60B, each of which is disposed adjacent to a side of one plate of the plates 7A to 7D that is disposed at a loading/unloading position where the articles 5 are allowed to be loaded into or unloaded from the furnace 1. The guide members 60A and 60B guide the articles 5 and are rotatable with vertical movement of the plate.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 8, 2022
    Assignee: Azbil Corporation
    Inventors: Mitsuharu Tanaka, Hisashi Beppu
  • Publication number: 20220042682
    Abstract: To detect a malfunction of a combustion device caused by the presence or absence of the flames of burners, a flame monitor includes a monitoring circuit configured to obtain first time series data about the flames at the time of ignition of burners in a combustion device, a first storage device configured to store the first time series data obtained by the monitoring circuit, and an output circuit configured to obtain second time series data with which the first time series data stored in the first storage device is to be compared and display the first time series data and the second time series data in a comparable manner in a display device.
    Type: Application
    Filed: July 20, 2021
    Publication date: February 10, 2022
    Applicant: Azbil Corporation
    Inventors: Kayo SUZUKI, Yuichi KUMAZAWA, Tomoya NAKATA
  • Publication number: 20210372875
    Abstract: To provide a pressure sensor element and a pressure sensor that have stable pressure sensitivity without the need for improving the accuracy of alignment between a diaphragm and a holding member, a pressure sensor element includes a thin plate diaphragm, a holding member that holds the diaphragm, and one or more strain resistance gauges that are provided on a first surface of the diaphragm and which change in resistance values according to deformation of the diaphragm, in which the holding member has recesses that, formed on an annular first end surface facing the first surface of the diaphragm, cut out parts of an inner circumference of the first end surface, and the strain resistance gauges are disposed near the regions corresponding to the recesses on the first surface of the diaphragm.
    Type: Application
    Filed: May 24, 2021
    Publication date: December 2, 2021
    Applicant: Azbil Corporation
    Inventor: Yuki SETO
  • Publication number: 20210310889
    Abstract: To provide a pressure sensor housing that is less likely to cause temperature distribution inside a pressure sensor when the pressure sensor is disposed inside a heater block, a pressure sensor housing includes a hollow cylindrical member extending along a predetermined axis core. A pressure sensor element that detects the pressure of a fluid is accommodated inside the cylindrical member. The entire circumference of a side surface thereof is surrounded by an air layer in the first posture in which an axis core of a space is aligned with the predetermined axis core with the hollow member disposed in the space. The side surface is in contact with a wall surface defining the space at a plurality of points at the same time in a second posture, which is at least one of postures in which the predetermined axis core is eccentric with the axis core of the space.
    Type: Application
    Filed: March 29, 2021
    Publication date: October 7, 2021
    Applicant: Azbil Corporation
    Inventors: Takayoshi KAWAZU, Raita MORI
  • Publication number: 20210262855
    Abstract: To calculate a regular-discharge probability of an optical sensor, a light detection system includes an optical sensor, an application voltage generating circuit that applies a drive pulse voltage to the optical sensor, a discharge determining portion that detects the optical sensor's discharge, a discharge probability calculating portion that calculates a discharge probability in a first state in which light from an additional light source having a known light quantity is incident on the optical sensor or the additional light source is turned off, and in a second state in which the additional light source's turning-on/turning-off state is different from the first state with a pulse width of the drive pulse voltage the same as the first state, a sensitivity parameter storing portion that stores sensitivity parameters of the optical sensor, and another discharge probability calculating portion that calculates a discharge probability of the optical sensor's regular discharge.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 26, 2021
    Applicant: Azbil Corporation
    Inventors: Shun ONUMA, Raita MORI
  • Publication number: 20210262856
    Abstract: To calculate received light quantity even when part of noise component's discharge probability is unknown, a light detection system includes a discharge probability calculating portion that calculates discharge probabilities for a first state in which a source's light with known light quantity impinges on an optical sensor, a second state in which the source's turning-on/turning-off state is the same as the first state with a drive pulse width applied to the optical sensor different from the first state, a third state in which the source's turning-on/turning-off state is different from the first and second states with the same pulse width as the first state, and a fourth state in which the source's turning-on/turning-off state is the same as the third state with the same pulse width as the second state, another discharge probability calculating portion that calculates regular and irregular discharges' probabilities, and a received light quantity calculating portion.
    Type: Application
    Filed: February 8, 2021
    Publication date: August 26, 2021
    Applicant: Azbil Corporation
    Inventors: Shun ONUMA, Raita MORI
  • Publication number: 20210255035
    Abstract: To calculate a probability of an optical sensor's irregular discharge, a light detection system includes an optical sensor, an application voltage generating circuit that applies a drive pulse voltage to the optical sensor, a discharge determining portion that detects the optical sensor's discharge, a discharge probability calculating portion that calculates a discharge probability for each of first and second states in which the optical sensor is shielded from light and the drive pulse voltage's width in the second state is different from the first state, a sensitivity parameter storing portion storing the drive pulse voltage's reference pulse width as the optical sensor's sensitivity parameter, and another discharge probability calculating portion that calculates an irregular discharge's probability that occurs without depending on the optical sensor's received light quantity, based on the sensitivity parameter, and the discharge probabilities calculated and the drive pulse voltage's widths in the first and
    Type: Application
    Filed: February 8, 2021
    Publication date: August 19, 2021
    Applicant: Azbil Corporation
    Inventors: Shun ONUMA, Raita MORI
  • Publication number: 20210255047
    Abstract: To provide a pressure sensor that has high pressure resistance performance, small measurement error by suppressing hysteresis with respect to pressure, and high sensitivity and high productivity, a pressure sensor includes a diaphragm unit with a first main surface that receives a measurement target fluid's pressure and a second main surface located on the opposite side of this first main surface, a housing, and a sensing unit that outputs the diaphragm unit's deformation as an electric signal, in which at least part of the diaphragm unit has a multi-layer structure in which a plurality of thin plate members are stacked, and the plurality of thin plate members are deformed independently of each other while at least part of the plurality of thin plate members is in press-contact to each other in a pressure receiving state in which the measurement target fluid's pressure is applied to the first main surface.
    Type: Application
    Filed: February 8, 2021
    Publication date: August 19, 2021
    Applicant: Azbil Corporation
    Inventors: Yuki SETO, Rina OGASAWARA, Yusuke NIIMURA
  • Publication number: 20210255283
    Abstract: To calculate a probability of an optical sensor's irregular discharge, a light detection system includes an optical sensor, an application voltage generating circuit that applies a drive pulse voltage to the optical sensor, a discharge determining portion that detects the optical sensor's discharge, a discharge probability calculating portion that calculates a discharge probability in a first state in which light from an additional light source having a known light quantity is incident on the optical sensor or the additional light source is turned off, and in a second state in which the additional light source's turning-on/turning-off state is different from the first state and the drive pulse voltage's pulse width is the same as the first state, a sensitivity parameter storing portion that stores the optical sensor's sensitivity parameters, and another discharge probability calculating portion that calculates a discharge probability of the optical sensor's irregular discharge.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 19, 2021
    Applicant: Azbil Corporation
    Inventors: Shun ONUMA, Raita MORI
  • Publication number: 20210247254
    Abstract: To manage the effect of disturbance on the reliability of a pressure measurement value, a pressure sensor includes a cylindrical housing in which a through-hole is formed, a diaphragm that has a peripheral edge portion fixed to the housing to block the through-hole and has a first surface in contact with a fluid to be measured, a strain sensor, provided on a second surface on the opposite side of the first surface of the diaphragm, that detects the deformation of the diaphragm, a dummy diaphragm that has a peripheral edge portion fixed to the housing and does not make contact with the fluid, and another strain sensor, provided on a first surface or a second surface of the dummy diaphragm, that detects the deformation of the dummy diaphragm.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 12, 2021
    Applicant: Azbil Corporation
    Inventors: Rina OGASAWARA, Yuki SETO, Yusuke NIIMURA
  • Publication number: 20210247255
    Abstract: To correct for effects of disturbance on a pressure measurement value, a pressure sensor includes a cylindrical housing having a through-hole, a diaphragm having peripheral edge portions fixed to the housing to block the through-hole and a first surface in contact with a fluid to be measured, first strain sensor on a surface on an opposite side of the diaphragm's first surface for detecting deformation of the diaphragm, a dummy diaphragm having peripheral edge portions fixed to the housing and not making contact with the fluid, second strain sensor on a surface of the dummy diaphragm for detecting deformation of the dummy diaphragm, a correction unit for correcting output signal of the first strain sensor to eliminate effects of disturbance based on output signal of the second strain sensor, and a pressure calculation unit for converting the signal corrected by the correction unit into the fluid's pressure.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 12, 2021
    Applicant: Azbil Corporation
    Inventors: Rina OGASAWARA, Yuki SETO, Yusuke NIIMURA
  • Publication number: 20210239554
    Abstract: Measurement with satisfactory sensitivity in a low-pressure range, and accurate measurement in a wider pressure range, are realized by a pressure sensor that includes a diaphragm layer and a pressure receiving region formed on the diaphragm layer. The pressure sensor includes a first piezostrictive element, a second piezostrictive element, a third piezostrictive element, and a fourth piezostrictive element. In addition, the pressure sensor includes a first magnetostrictive element, a second magnetostrictive element, a third magnetostrictive element, and a fourth magnetostrictive element. A switching function unit outputs a pressure value calculated by a second calculation function unit until a pressure value calculated by a first calculation function unit exceeds a set threshold value, and outputs the pressure value calculated by the first calculation function unit when the pressure value calculated by the first calculation function unit exceeds the threshold value.
    Type: Application
    Filed: January 26, 2021
    Publication date: August 5, 2021
    Applicant: Azbil Corporation
    Inventor: Tomohisa TOKUDA
  • Publication number: 20210239555
    Abstract: The present disclosure enables measurement with satisfactory sensitivity in a low pressure range, and thus accurate measurement in a wider pressure range, by providing a pressure sensor that includes a diaphragm layer and a pressure receiving region formed in the diaphragm layer. In addition, the pressure sensor includes a first piezostrictive element, a second piezostrictive element, a third piezostrictive element, and a fourth piezostrictive element. In addition, the pressure sensor includes a first magnetostrictive element, a second magnetostrictive element, a third magnetostrictive element, and a fourth magnetostrictive element.
    Type: Application
    Filed: January 25, 2021
    Publication date: August 5, 2021
    Applicant: Azbil Corporation
    Inventors: Tomohisa TOKUDA, Kouji YUUKI, Tatsuo TANAKA