Patents Assigned to Yamatake Corporation
  • Publication number: 20120006129
    Abstract: Provision of a pressure measuring device having a flexible membrane that receives the pressure; a pedestal, provided with a raised portion having a bottom face that is circular that supports the flexible membrane; and a supporting member that is bonded to the circular bottom face of the raised portion. The flexible membrane is made out of, for example, silicon, and has the (100) face as the primary face. Moreover, the flexible membrane is provided held between a silicon substrate, which is provided with a recessed portion, and a silicon substrate, which is provided with a recessed portion. Because of this, the flexible membrane is held on the pedestal with the silicon substrate interposed therebetween.
    Type: Application
    Filed: July 6, 2011
    Publication date: January 12, 2012
    Applicant: YAMATAKE CORPORATION
    Inventors: Tomohisa Tokuda, Yuuichirou Sumiyoshi
  • Publication number: 20120002734
    Abstract: Channels, which are assigned to each individual lower-level device that are the input/output destinations for HART communications signals that are produced through superimposing, onto a 4 to 20 mA DC signal, digital signals that have been converted into 1200 Hz and 2200 Hz frequency signals; a first controlling portion for controlling communications with a higher-level device; and HART communications portions, provided for each individual channel, for extracting frequency signals from the HART communications signals received through the channels, and for sending to the controlling portion digital signals corresponding to the frequency signals, are provided; where the first controlling portion sends, to the higher-level device, the digital signals received from the individual HART communications portions.
    Type: Application
    Filed: June 28, 2011
    Publication date: January 5, 2012
    Applicant: YAMATAKE CORPORATION
    Inventors: Takashi Komiyama, Kentaro Kitahori, Yoshinori Monaka
  • Publication number: 20120004877
    Abstract: A signal evaluating device comprises: a binarizing portion for binarizing an input signal; a run length measuring portion for measuring the run length of the input signal during the evaluating interval, using the output of the binarizing means as the input; and a validity evaluating portion for evaluating whether or not the input signal is valid, from the degree of matching of a run length frequency distribution, obtained from the measurement results by the run length measuring portion, and a geometric distribution. The validity evaluating portion evaluates whether or not an input signal is valid through a ratio of the total frequency during the evaluation interval to Nsamp/2, or a ratio of the frequency of a class 1 during the evaluating interval to Nsamp/4, where Nsamp is the total of the sampling clocks for measuring the run length during the evaluating interval.
    Type: Application
    Filed: June 27, 2011
    Publication date: January 5, 2012
    Applicant: YAMATAKE CORPORATION
    Inventor: Tatsuya Ueno
  • Publication number: 20120004741
    Abstract: HART-I/O units for sending and receiving input/output signals of HART communications-compatible devices that have HART communications functions, and for sending and receiving, on mutually differing lines, 4-20 mA DC signals, which include the input/output signals, and digital signals that are superimposed on the DC signals. A controller for receiving a DC current that is outputted from the HART-I/O units and for controlling processes based on the DC signals; and a device monitoring portion for receiving digital signals sent and received by the HART-I/O units, and for monitoring the status of the HART communications-compatible devices based on the digital signals.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Applicant: YAMATAKE CORPORATION
    Inventor: Shin Suzuki
  • Publication number: 20120000294
    Abstract: A wave ring spring is provided between a top face of a battery case and an inner wall of an equipment case. A plurality of silicone rubber pieces is provided between a bottom face of the battery case and an inner wall of the equipment case. A plurality of elastic tabs is provided between the outer peripheral surfaces that connect between the top face and the bottom face of the battery case and inner walls of the equipment case. The elastic tabs are formed integrally with the outer peripheral surfaces of the battery case.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Applicant: YAMATAKE CORPORATION
    Inventors: Kenji Mizutori, Ichiro Mitsutake, Takashi Watanabe
  • Publication number: 20110308321
    Abstract: A pressure sensor for detecting a pressure of a first object to be measured; a pressure sensor for detecting a pressure of a second object to be measured; a temperature sensor for detecting the temperature of the pressure sensor and the pressure sensor; a first correcting portion for executing a correction that eliminates a fluctuation portion, due to a change in temperature, from the detection signal of the pressure sensor, and for outputting the signal, after the correction, as a measurement signal for the first object to be measured; and a second correcting portion for executing a correction that eliminates a fluctuation portion, due to a change in temperature, from the detection signal of the pressure sensor, and for outputting the signal, after the correction, as a measurement signal for the second object to be measured; wherein the temperature sensor is integrated with the pressure sensor and the pressure sensor so as to be in a state of mutual contact.
    Type: Application
    Filed: June 7, 2011
    Publication date: December 22, 2011
    Applicant: YAMATAKE CORPORATION
    Inventor: Akio Kasai
  • Publication number: 20110308299
    Abstract: A pressure transmitting device detects, through a pressure guiding tube, a pressure of a liquid, slurry, gas, or the like to be measured, wherein there are fluctuations in the pressure; where the pressure guiding tube blockage diagnosing device comprises: a rising/falling frequency detecting portion for segmenting into a plurality of continuous intervals a time series of pressure values detected by the pressure transmitting device, and for detecting, in each time interval, the rising/falling frequency of the fluctuations; an evaluating portion for evaluating the state of blockage of the pressure guiding tube through comparing, to a specific threshold value, the rising/falling frequency of the fluctuations; and a detecting interval adjusting portion for adjusting a detecting interval for the rising/falling frequency of the fluctuations based on an autocorrelation coefficient for the pressure value.
    Type: Application
    Filed: March 3, 2010
    Publication date: December 22, 2011
    Applicant: Yamatake Corporation
    Inventor: Tetsuya Tabaru
  • Publication number: 20110313704
    Abstract: A pressure detector detecting a pressure of cold or hot water; a temperature detector detecting a temperature of a pressure sensor; correcting equation storage storing, cold water correcting equation information applied when the temperature detected by the temperature detector is included in a cold water temperature range, and hot water correcting equation information applied when the temperature detected by the temperature detector is included in a hot water temperature range; a temperature range determiner determining the temperature range that includes the temperature detected by the temperature detector as either a cold water temperature range or a hot water temperature range; and a correction calculating portion using the correcting equation corresponding to the temperature range determined by the temperature range determiner correcting the detection signal by the pressure detector, and outputting the post-correction signal as a measurement signal.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 22, 2011
    Applicant: YAMATAKE CORPORATION
    Inventor: Tomohisa Sasaki
  • Publication number: 20110295544
    Abstract: A measured value for a PMV within a living space is sent to a comfort efficacy evaluating device. Occupancy information (the current number of occupants N) in the living space is sent to the comfort efficacy evaluating device. The comfort efficacy evaluating device calculates a comfort index P as P=1.0?|PMV|/3, and this comfort index P is weighted by the number of occupants N at the time that the comfort index P was taken. In this case, if the number of occupants is relatively high, the weighting is high, and if the number of occupants is relatively low, then the weighting is low. Additionally, the weighted comfort index P is integrated over an evaluation interval, and thus integrated value, or a weighted average based on this integrated value, is used as a comfort efficacy index TP. An evaluation of the efficacy of energy conservation can be performed in the same way, taking into account the current occupancy of the living space.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 1, 2011
    Applicant: YAMATAKE CORPORATION
    Inventors: Haruka Ueda, Ryouta Dazai, Masato Tanaka
  • Publication number: 20110294329
    Abstract: A male connector comprises: a holder, attached rotatably to the outer peripheral surface of a plug main unit portion, having male threads formed on the outer peripheral surface thereof and having sliding grooves formed at specific intervals at the rearward side on the outer peripheral surface; and a knob portion, formed integrally with engaging protruding portions that have engaging hooks on the tip end sides thereof and that sliding in the sliding grooves, where the knob portion is attached so as to be able to rotate together with the holder.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 1, 2011
    Applicant: YAMATAKE CORPORATION
    Inventor: Tomokazu SASAKI
  • Patent number: 8068998
    Abstract: An electromagnetic flowmeter that prevents fluctuations in the frequency of synchronized pulse signals due to momentary fluctuations of the power source voltage. The comparator of an AC synchronizing circuit that generates pulse signals synchronized to the frequency of a commercial power source is given a hysteresis function in which a first threshold value Vth1 and a second threshold value Vth2 are set up in the comparator. The comparator compares the level of divided AC signals from a dividing circuit with the first threshold value Vth1, and if the level of the divided AC signals exceeds the first threshold value Vth1, the level of the synchronized pulse signals is inverted from the “L” level to the “H” level; and if the level of the divided AC signals falls below the second threshold value Vth2, the level of the synchronized pulse signals is inverted from the “H” level to the “L” level.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: November 29, 2011
    Assignee: Yamatake Corporation
    Inventor: Ichiro Mitsutake
  • Publication number: 20110288687
    Abstract: A setting value controlling device comprises: a setting value information collecting and storing portion for collecting and storing temperature setting values from an air-conditioner controlling device; a setting value reset evaluating portion for resetting the temperature setting value to a reference setting value if the temperature setting value is not a more energy-conserving setting than the reference setting value when a specific reset time has been reached; and a reference setting value updating portion for updating the reference setting value to the updated temperature setting value if, when the temperature setting value has been updated by a user, the updated temperature setting value is a more energy-conserving setting than the reference setting value and a specific time interval has elapsed since updating of the temperature setting value.
    Type: Application
    Filed: May 20, 2011
    Publication date: November 24, 2011
    Applicant: YAMATAKE CORPORATION
    Inventors: Takashi Koyanagi, Naofumi Ushioda, Masato Tanaka
  • Publication number: 20110259118
    Abstract: A noise eliminating circuit is provided between a sample hold portion and an A/D converting portion. In the noise eliminating circuit, a DC flow rate signal is sent from the sample hold portion through a buffer to one input terminal of an operational amplifier as a first input signal, and through a high-pass filter and a buffer to the other input terminal of the operational amplifier as a second input signal. The high-pass filter passes, as a noise component, a signal of higher than a specific frequency included in the DC flow rate signal. The operational amplifier calculates the difference between the first input signal (the flow rate signal component+the noise component) and the second input signal (the noise component), and outputs this difference (the flow rate signal component) to the A/D converting portion as the DC flow rate signal.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Applicant: YAMATAKE CORPORATION
    Inventor: Ichirou MITSUTAKE
  • Publication number: 20110264382
    Abstract: Gain switching is performed by a DC amplifying circuit. The DC amplifying circuit is provided with individual gain generating circuits and a gain selecting circuit, and saturation preventing circuits are provided in earlier stages than the individual gain generating circuits. The individual gain generating circuit generates a gain G1, the individual gain generating circuit generates a gain G2 (where G2>G1), and the individual gain generating circuit generates a gain G3 (where G3>G2). The gain selecting circuit selects, as a used gain generating circuit, one of the individual gain generating circuits, and sends the output thereof to an A/D converting circuit in a later stage.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 27, 2011
    Applicant: YAMATAKE CORPORATION
    Inventors: Taka Inoue, Ichirou Mitsutake
  • Patent number: 8046188
    Abstract: A temperature sensor for measuring temperature in accordance with a time-of-life of a fluorescent light that is produced by a fluorescent material, and is provided with a light source for imaging an excitation light, a fluorescent material for producing fluorescent light by the excitation light, a photoreceptor element for detecting the fluorescent light and outputting a fluorescent light signal in accordance with the fluorescent light intensity, and a signal processing circuit for calculating a temperature based on the fluorescent light signal from the photoreceptor element, where the signal processing circuit calculates integral values for the fluorescent light signals in the respective intervals A through C that have identical time durations, and then, based on the integral values, for two intervals, calculates a difference value, and then calculates a ratio of two difference values, to be a variable that varies in accordance with the temperature, and then references the relationship between the temperatur
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: October 25, 2011
    Assignee: Yamatake Corporation
    Inventors: Seiichiro Kinugasa, Atsushi Kato
  • Patent number: 8042400
    Abstract: A pressure sensor according to the present invention comprises: a differential pressure diaphragm, which is provided to a center part of a sensor chip; a differential pressure gauge, which is provided to a perimeter edge part of the differential pressure diaphragm and is formed in radial directions; a differential pressure gauge, which is disposed at a position at which it opposes the differential pressure gauge and, together with the first differential pressure gauge, sandwiches the differential pressure diaphragm and is formed in perimeter directions, which are perpendicular to the radial directions; a differential pressure gauge, which is provided in the vicinity of the differential pressure gauge and is provided in the perimeter directions; a differential pressure gauge, which is disposed at a position at which it opposes the differential pressure gauge and, together with the differential pressure gauge, sandwiches the differential pressure diaphragm and is formed in the radial directions; a static pressu
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: October 25, 2011
    Assignee: Yamatake Corporation
    Inventors: Masayuki Yoneda, Tomohisa Tokuda
  • Publication number: 20110257898
    Abstract: A thermal diffusivity measuring system including a measuring mechanism for measuring a radiation coefficient or a value for thermal conductivity for a mixed gas measured when the heater element has produced heat at a plurality of temperatures; a thermal diffusivity calculating equation storing device storing a thermal diffusivity calculating equation using the radiation coefficients or the thermal conductivities for a plurality of heat producing temperatures as independent variables and uses the thermal diffusivity as the dependent variable; and a thermal diffusivity calculating portion calculating a value for the thermal diffusivity of the mixed gas being measured through substituting the values of the radiation coefficients or the thermal conductivities of the mixed gas being measured, for the plurality of heat producing temperatures, for the independent variables of the radiation coefficients or thermal conductivities, for the plurality of heat producing temperatures, in the thermal diffusivity calculating
    Type: Application
    Filed: April 20, 2011
    Publication date: October 20, 2011
    Applicant: YAMATAKE CORPORATION
    Inventor: Yasuharu Ooishi
  • Patent number: 8037774
    Abstract: A state detection device which detects parameters includes a measuring pipe, electrodes, an exciting coil that applies a magnetic field to the fluid, signal lines arranged at angle to the magnetic field such that an electromotive force is generated due to a change with passage of time in the magnetic field, and a state quantifying unit for extracting a ?A/?t component from resultant electromotive forces that are detected at the electrodes and the signal lines and are composed of an electromotive force of the ?A/?t component irrelevant to a flow velocity of the fluid and resulting from a change with passage of time in the magnetic field and an electromotive force of a v×B component relevant to the flow velocity of the fluid, and extracts a variation factor relevant to the parameter from the ?A/?t component to quantify the parameter based on the variation factor.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: October 18, 2011
    Assignee: Yamatake Corporation
    Inventor: Tomoshige Yamamoto
  • Publication number: 20110247422
    Abstract: A pressure sensor including a sensor chip; a differential pressure diaphragm provided in the center portion of the sensor chip; a first differential pressure gauge formed along a radial direction relative to the center of the differential pressure diaphragm, provided on a first edge of the differential pressure diaphragm; a second differential pressure gauge formed along a circumferential direction, which is perpendicular to the radial direction, provided in the vicinity of the first differential pressure gauge on the first edge of the differential pressure diaphragm; and a static pressure diaphragm disposed between an edge portion of the sensor chip and one of the edges, other than the first edge, of the differential pressure diaphragm, provided to the outside of the differential pressure diaphragm.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 13, 2011
    Applicant: YAMATAKE CORPORATION
    Inventors: Tomohisa TOKUDA, Hirofumi TOJO, Nozomi KIDA
  • Publication number: 20110247421
    Abstract: A pressure sensor comprising: a sensor chip; a differential pressure diaphragm provided in the center portion of the sensor chip; a differential pressure gauge provided in the differential pressure diaphragm; a static pressure diaphragm provided at the outer peripheral portion of the differential pressure diaphragm; a first static pressure gauge formed at an edge portion of the static pressure diaphragm; and a second static pressure gauge formed at a center portion of the static pressure diaphragm.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 13, 2011
    Applicant: YAMATAKE CORPORATION
    Inventors: Tomohisa Tokuda, Hirofumi Tojo, Nozomi Kida