Patents Assigned to Mitsubishi Electric Corporation
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Patent number: 11990846Abstract: A power conversion apparatus includes a converter circuit converting AC voltage output from an AC power supply into DC voltage. The converter circuit includes unit converters. The power conversion apparatus includes a low current-oriented controller the unit converters to cause current corresponding to a single phase to flow through a current detector, and a high current-oriented controller controlling operation of the unit converters based on a result of comparison between a duty command and a carrier signal, where the duty command is generated based on detection values detected by the current detector and a voltage detector. When the detection value detected by the current detector is less than or equal to a first threshold, the low current-oriented controller is activated, and when the detection value detected by the current detector is greater than the first threshold, the high current-oriented controller is activated.Type: GrantFiled: November 14, 2019Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Motoya Suzuki, Satoru Ichiki, Keisuke Uemura, Koichi Arisawa, Kazunori Hatakeyama
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Patent number: 11990894Abstract: A semiconductor device includes a first switch and a first driver. The first switch selects and outputs one of a power supply potential and a generated potential as a first switch output potential based on a synchronization signal from a transmission circuit and a delayed signal delayed from the synchronization signal. The first driver charges a gate of a bipolar transistor element based on the synchronization signal of the transmission circuit and the first switch output potential.Type: GrantFiled: June 1, 2022Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Jun Fukudome, Kazuya Hokazono, Mitsutaka Hano, Yuki Terado
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Patent number: 11991731Abstract: Provided are: a sending/receiving unit to receive data frames sent from another wireless station and receivable, the receivable data frames including a first data frame that is a relay target; an interference time storage unit to store an interference time that is a time from when the sending/receiving unit starts receiving each of the data frames to when the sending/receiving unit terminates receiving the data frame; a waiting time determination unit to determine a waiting time on a basis of the interference time; a frame generation unit to generate a second data frame by changing a destination of the first data frame to a data aggregation station that aggregates the data frames or to a wireless station that serves as a relay destination; and a transmission control unit to wait for the waiting time and cause the sending/receiving unit to send the second data frame.Type: GrantFiled: June 22, 2021Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Keiko Sameshima, Tetsuya Aoyama, Keijiro Take, Yusuke Kinoshita
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Patent number: 11990833Abstract: Provided is a low-cost noise filter having a noise suppression effect that is not reduced even when a resonance frequency changes according to changes in temperature. A noise filter includes: a noise detection unit which detects a common mode noise; a cancellation signal output unit; an injection unit which injects a cancellation signal; and a grounded capacitor. The cancellation signal output unit includes a filter part which generates the cancellation signal from the common mode noise, and an amplification part which amplifies the cancellation signal. A temperature dependence of a product of an inductance value and a capacitance value of a main circuit portion including the noise detection unit, the injection unit, and the grounded capacitor, and a temperature dependence of a product of an inductance value and a capacitance value of the filter part, are equal to each other.Type: GrantFiled: July 13, 2020Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yasuaki Furusho, Ryota Asakura, Ryosuke Kobayashi, Mamoru Kamikura
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Patent number: 11990447Abstract: A first alignment resin (4) is formed in an annular shape on an electrode (3) of an insulating substrate (1). First plate solder (5) having a thickness thinner than that of the first alignment resin (4) is arranged on the electrode (3) on an inner side of the annular shape of the first alignment resin (4). A semiconductor chip (6) is arranged on the first plate solder (5). The first plate solder (5) is made to melt to bond a lower surface of the semiconductor chip (6) to the electrode (3).Type: GrantFiled: September 24, 2021Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventor: Isao Oshima
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Patent number: 11990990Abstract: A relay device includes a plurality of physical ports (111-1 to 111-N) that receive frames, and a layer-2 protocol processing unit (113) that transfers the frame received by one of the physical ports (111-1 to 111-N) from at least one of the physical ports (111-1 to 111-N). The layer-2 protocol processing unit (113) has a filtering function for blocking frames other than a clock-time synchronization frame during transfer involving a port selected from the plurality of physical ports (111-1 to 111-N) as a port that relays only the clock-time synchronization frame used for synchronizing clock time.Type: GrantFiled: March 31, 2022Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiyuki Nakayasu, Sachiko Taniguchi, Ryusuke Kawate
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Patent number: 11991206Abstract: A combination identification unit (27) identifies combinations of one or more components which constitute a target system and in each of which an intrusion detection system that detects unauthorized access can be installed. A combination reduction unit (28) extracts, from the combinations identified by the combination identification unit, a combination that satisfies an installation condition accepted by an installation condition input unit (22) and can detect unauthorized communications indicated by attack information accepted by an attack information input unit (24) at a rate higher than or equal to a threshold.Type: GrantFiled: September 30, 2020Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takeshi Asai, Kiyoto Kawauchi
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Patent number: 11990807Abstract: In the electric rotating machine, a crank portion that is displaced in a radial direction of an armature iron core is provided in an apex portion of a coil end portion; a first oblique side that slants with respect to an axis-direction endface of the armature iron core connects a first coil conductor portion with the crank portion; a second oblique side that slants with respect to the axis-direction endface of the armature iron core connects a second coil conductor portion with the crank portion; at least one of the first oblique side and the second oblique side has an inflection point, before being connected with the crank portion, that functions as a base point of a bending portion that is bent toward a radially outside of the armature iron core.Type: GrantFiled: February 22, 2022Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Hironori Tsuiki, Jumpei Yasutomi
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Patent number: 11988566Abstract: A pulling detection device includes: a base in which, on a foundation portion, a first wall portion, a projection, and a second wall portion are provided; a movable rod including a switch operation body and a pulling rod, the switch operation body having a first wall portion opposed surface, a projection opposed surface, and a second wall portion opposed surface, the pulling rod extending from the second wall portion opposed surface, while movement of the movable rod toward one side is restricted by contact between the first wall portion and the first wall portion opposed surface and movement of the movable rod toward another side is restricted by contact between the projection and the projection opposed surface; an elastic body provided between the second wall portion opposed surface and the second wall portion; a first switch which operates by contact/separation; and a second switch which operates by contact/separation.Type: GrantFiled: December 13, 2018Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Naoya Kadota, Kota Yano, Yoshihiro Morimoto, Daisuke Mizuno, Yasuki Hattori
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Patent number: 11990878Abstract: A differential amplifying unit includes a first input transistor and a second input transistor forming a differential pair, and a first tail current source and a second tail current source. An output stage includes a first output transistor and a second output transistor that can be driven by an output of the differential amplifying unit. A controller performs control such that during startup, a load is driven by the first tail current source and the first output transistor, and such that after startup, the load is driven by the first tail current source, the second tail current source, the first output transistor, and the second output transistor.Type: GrantFiled: February 21, 2019Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Tomokazu Kojima
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Patent number: 11988688Abstract: A voltage dividing device includes: a plurality of resistive voltage dividing boards each being a plate-like board having a front face, the board having a plurality of conductor patterns arranged on the front face, the conductor patterns being connected in series with one another through capacitors and resistors connected in parallel on the front face of the board. The resistive voltage dividing boards are connected in series with one another through connecting members, and adjacent ones of the resistive voltage dividing boards are arranged so that a rear face of one of the adjacent resistive voltage dividing boards and a front face of the other resistive voltage dividing board face each other and that the conductor patterns arranged on the front face of the one resistive voltage dividing board are disposed oppositely from the conductor patterns arranged on the front face of the other resistive voltage dividing board.Type: GrantFiled: May 22, 2020Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuya Yamashita, Fumihito Izawa, Seiiyu Ishimoto, Masato Achihara
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Patent number: 11987275Abstract: A train control system includes: an image information conversion device that is mounted on a train and outputs first image information obtained by adding train information to image information imaged by an imaging device capable of capturing an area in front of the train; and an obstacle detection device that is installed on the ground and includes: an image information storage unit that records the first image information output from the image information conversion device; an image information comparison unit that compares the first image information with second image information recorded in the image information storage unit; and an image information result output unit that outputs a result from the image information comparison unit.Type: GrantFiled: January 12, 2018Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Makoto Tokumaru
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Patent number: 11987233Abstract: A route generation device includes: a steering loaded state input unit to which a steering loaded state of a vehicle is inputted; a parking slot position input unit to which a position of a parking slot near the vehicle is inputted; a vehicle position input unit to which a position of the vehicle is inputted; a number-of-times-of-static-steering upper limit calculation unit configured to calculate, on the basis of the steering loaded state, a number-of-times-of-static-steering upper limit value up to which static steering of the vehicle can be performed between the position of the vehicle and the position of the parking slot; and a guidance route generation unit configured to generate a guidance route for guiding the vehicle to the parking slot, on the basis of the position of the vehicle, the position of the parking slot, and the number-of-times-of-static-steering upper limit value.Type: GrantFiled: January 17, 2020Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Kenta Katsu, Takashi Matsumoto, Takahisa Aoyagi, Masataka Shirozono, Hiroshi Yamada
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Patent number: 11987170Abstract: A gear shift adjusting mechanism includes: an adjustment unit including a first slider; an adjustment target module including a second slider; and a switch unit including a first rotation shaft and a link member supported rotatably with respect to a fixing member about the first rotation shaft. The link member includes a first engaged part that is engaged with a first engaging part of the first slider and a second engaged part that is engaged with a second engaging part of the second slider. The switch unit moves at least one of the first rotation shaft, the first engaging part, or the second engaging part so that at least one of a first distance between the first rotation shaft and the first engaging part or a second distance between the first rotation shaft and the second engaging part is changed.Type: GrantFiled: March 19, 2021Date of Patent: May 21, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takeshi Inatani, Muneharu Kuwata
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Patent number: 11987498Abstract: This gas production system includes: a gas production device having a reactor forming a flow path for a treatment target gas, a first electrode and a second electrode to which voltage is applied, and a catalyst layer provided in the flow path and containing a catalyst; voltage generation means for generating voltage to be applied to the first electrode and the second electrode; and gas supply means for supplying the treatment target gas to the gas production device. The voltage generation means has frequency setting means for setting the frequency of the voltage in accordance with the treatment target gas, plasma generated between the first electrode and the second electrode is applied to the catalyst layer, and the treatment target gas is reformed to obtain a product gas.Type: GrantFiled: April 23, 2019Date of Patent: May 21, 2024Assignees: MITSUBISHI ELECTRIC CORPORATION, TOKYO INSTITUTE OF TECHNOLOGYInventors: Kyohei Aketagawa, Isamu Hirashiki, Tomohiro Nozaki, Kenta Sakata
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Patent number: 11988419Abstract: A refrigerant circuit includes a compressor, a high-pressure side heat exchanger, a decompressor, and a low-pressure side heat exchanger, which are annularly interconnected by a refrigerant pipe, and is configured to circulate refrigerant. The refrigerant circuit performs an oil recovery operation based on an operation history of the compressor during a normal operation of the refrigerant circuit and an amount of oil in the compressor detected by an oil depletion sensor.Type: GrantFiled: April 5, 2019Date of Patent: May 21, 2024Assignee: Mitsubishi Electric CorporationInventors: Hiroki Ishiyama, Yusuke Shimazu
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Publication number: 20240159474Abstract: A heat exchanger includes a plurality of flat heat-transfer tubes and a corrugated fin placed between the plurality of flat heat-transfer tubes. Louvers in fin sections of the corrugated fin are divided into a first louver group formed further upstream in a direction of flow of air than a drain slit in the corrugated fin and a second louver group formed further downstream in the direction of flow of air than the drain slit. Plate portions of the first louver group and plate portions of the second louver group are inclined to a flat-plate portion in the fin sections and inclined in respective directions that are opposite to each other. The drain slit includes a plurality of drain slits formed between the first louver group and the second louver group at an interval in the direction of flow of air.Type: ApplicationFiled: February 17, 2022Publication date: May 16, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoji ONAKA, Rihito ADACHI, Nanami KISHIDA, Taisaku GOMYO, Tetsuji SAIKUSA, Yuki NAKAO, Atsushi KIBE, Hiroyuki MORIMOTO
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Publication number: 20240157975Abstract: An autonomous driving integrated control system includes multiple roadside monitoring devices and an autonomous driving device, wherein the multiple roadside monitoring devices each have a sensor and a transmitter that transmits information of a detected object, and wherein the autonomous driving device has: a receiver unit; a vehicle abnormal state detection unit; an escape route generation unit that generates, per each of the roadside monitoring devices, intersection escape routes for escaping from the intersection; a selection unit that compares the thus-generated intersection escape routes with each other in terms of their collision-avoidance levels, to thereby make selections; a travelable distance calculation unit that calculates an abnormal-time travelable distance; a vehicle control unit that, when an abnormal state of the vehicle is detected, causes the vehicle to travel along a high-level intersection escape route corresponding to the abnormal-time travelable distance; and a vehicle operation unit.Type: ApplicationFiled: August 28, 2023Publication date: May 16, 2024Applicant: Mitsubishi Electric CorporationInventors: Michitoshi AZUMA, Kohei MORI, Toru HIGUCHI, Hiroshi YAMADA
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Publication number: 20240157567Abstract: This picking system comprises: a workpiece posture calculator that calculates postures of workpieces from captured image data acquired from an imager, selects a workpiece to be picked, and determines a gripping position and an angle; a robot that grips and takes out the selected workpiece, on the basis of the determination by the workpiece posture calculator; a posture changing device that changes the posture of a grasped member; and a controller that, when the gripping position and the angle that are determined deviate from a gripping position and an angle that are set, causes the posture changing device instead to hold the workpiece gripped by the robot, and rotate the workpiece, and then causes the robot to grip again the workpiece so that the gripping position and the angle match the gripping position and the angle that are set.Type: ApplicationFiled: March 31, 2022Publication date: May 16, 2024Applicant: Mitsubishi Electric CorporationInventors: Masaya KAWAI, Takehiro MAEDA
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Publication number: 20240159479Abstract: A heat exchanger includes a distributor; a plurality of heat-transfer tubes; and a refrigerant inflow pipe. The plurality of heat-transfer tubes connected to the distributor stick out into an internal space of the distributor such that when the plurality of heat-transfer tubes and a part defined as the internal space are projected on a plane perpendicular to an axial direction of the distributor, the plurality of heat-transfer tubes occupies one-half or greater of the part defined as the internal space. The distributor includes an orifice plate and dividing the internal space. The orifice plate is located above the lowest one of the plurality of heat-transfer tubes in the internal space. The orifice plate has an orifice through which the upper and lower spaces communicate with each other.Type: ApplicationFiled: April 6, 2021Publication date: May 16, 2024Applicant: Mitsubishi Electric CorporationInventors: Rihito ADACHI, Yoji ONAKA, Ryota AKAIWA, Yohei KATO, Yuta SATO