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公开(公告)号：US20240044949A1
公开(公告)日：2024-02-08
申请号：US18267602
申请日：2021-09-29
Applicant: Hitachi Astemo, Ltd.
Inventor： Toshinari TEZUKA
IPC: G01R19/165 , G01R31/388 , G01R35/00
CPC classification number: G01R19/16542 , G01R31/388 , G01R35/00
Abstract: A voltage detection circuit includes a first buffer circuit and second buffer circuit that output a voltage corresponding to an input voltage, a voltage detection unit that detects an output voltage from the first buffer circuit and an output voltage from the second buffer circuit, a reference voltage output circuit capable of selectively outputting one of a plurality of reference voltages different in voltage value from each other, and a switch circuit connected to the first buffer circuit and second buffer circuit. The switch circuit switches an input voltage to the first buffer circuit, from a first input voltage corresponding to a voltage of a first input terminal connected to a measurement target to the reference voltage outputted from the reference voltage output circuit, and switches an input voltage to the second buffer circuit, from a second input voltage to the reference voltage outputted from the reference voltage output circuit.
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公开(公告)号：US11892333B2
公开(公告)日：2024-02-06
申请号：US17423946
申请日：2020-01-21
Applicant: Hitachi Astemo, Ltd.
Inventor： Masatoshi Ogata , Norio Ishitsuka , Takahiro Miki , Akira Uenodan , Takayuki Yogo
CPC classification number: G01F1/6842 , G01F15/14
Abstract: An object is to improve measurement accuracy of a thermal air flow meter. A flow-rate measuring device comprising: a sensor assembly having a flow-rate detecting element; a circuit board on which the sensor assembly is mounted; and a housing on which the circuit board is mounted, wherein the sensor assembly is mounted on the circuit board such that a detection portion side of the flow-rate detecting element is closer to the housing, and the sensor assembly includes a contact portion in contact with the housing on the detection portion side.
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公开(公告)号：US11891051B2
公开(公告)日：2024-02-06
申请号：US17619091
申请日：2020-06-05
Applicant: Hitachi Astemo, Ltd.
Inventor： Satoshi Matsuda , Masashi Seimiya , Akitoshi Miyazaki
IPC: B60W30/06 , B60W30/045
CPC classification number: B60W30/06 , B60W30/045 , B60W2556/25 , B60W2556/30
Abstract: A parking assist device capable of parking assistance that ensures high accuracy of a parking location is provided. A parking assist device that assists in performing an operation of parking a vehicle includes a parking-allowing location calculation unit that before the vehicle stops at a parking-allowing location, calculates and updates the parking-allowing location a plurality of times, and a parking route calculation unit that calculates a parking route. The parking route calculation unit sets a minimum turning radius for calculating the parking route, based on the amount of a shift between the parking-allowing location not updated and the parking-allowing location having been updated, and calculates the parking route, using the minimum turning radius. The minimum turning radius is set larger than the minimum value of a turning radius unique to the vehicle.
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公开(公告)号：US11888408B2
公开(公告)日：2024-01-30
申请号：US17439044
申请日：2020-01-30
Applicant: Hitachi Astemo, Ltd.
Inventor： Takeshi Seki , Ayumu Hatanaka , Naoya Suto
CPC classification number: H02M7/003 , H01L23/34 , H02M7/537 , H05K7/1432 , H05K7/209
Abstract: A negative-side bus bar 41 includes a capacitor connection portion and first and second negative terminal portions 271 exposed from a resin portion 44 and connected to a DC negative-side terminals 103 of first and second power semiconductor modules 30. A partition portion 252b of a case 252 is provided with a protruding portion 281 that protrudes toward a mold bus bar 40 further than an upper surface 257 of the first and second power semiconductor modules 30 and is thermally coupled to the mold bus bar 40. The projecting portion 281 is disposed between a root portion 275 of an exposed portion where the first negative electrode terminal portion 271 is exposed from the resin portion 44 and a second root portion 275 of an exposed portion where the second negative electrode terminal portion 271 is exposed from the resin portion 44. In this manner, a spatial distance and a creepage distance between the exposed portion from the resin portion of the mold bus bar and the power semiconductor module are made large and the temperature rise of a capacitor is suppressed.
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公开(公告)号：US11886874B2
公开(公告)日：2024-01-30
申请号：US17610251
申请日：2020-04-08
Applicant: HITACHI ASTEMO, LTD.
Inventor： Tadashi Kishimoto , Goichi Ono , Akira Kitayama , Daichi Murata
CPC classification number: G06F9/3001 , G06F7/4991 , G06F7/49947 , G06N3/063
Abstract: An arithmetic operation device causes a convolution arithmetic unit to perform a convolution arithmetic operation between a filter and target data corresponding to a size of the filter in each of a plurality of convolution layers constituting a neural network. The arithmetic operation device includes: a bit reduction unit that reduces a bit string corresponding to a first bit number from a least significant bit of the target data and reduces a bit string corresponding to a second bit number from a least significant bit of a weight that is an element of the filter for each convolution layer; and a bit addition unit that adds a bit string corresponding to a third bit number obtained by adding the first bit number and the second bit number to a least significant bit of a convolution arithmetic operation result output from the convolution arithmetic unit by inputting the target data and the weight after being reduced by the bit reduction unit to the convolution arithmetic unit.
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Patent Agency Ranking
公开(公告)号：US11885374B2
公开(公告)日：2024-01-30
申请号：US17788051
申请日：2020-12-23
Applicant: HITACHI ASTEMO, LTD.
Inventor： Kenichiro Ishikura , Xiaojin Zhu , Toshiyuki Masuda
CPC classification number: F16C3/023 , B60K17/22 , F16D1/076 , F16D3/06 , F16C2226/80
Abstract: A propeller shaft (PS) has a balance piece (9) on the outer peripheral side of a stub shaft body section (31) of a stub shaft (3), which is axially separated from both spline sections (25, 34), which are spline fitting sections. Due to this configuration, changes in the gap in both spline sections (25, 34) when the balance piece (9) is welded are minimized, and the occurrence of new rotational imbalance can be minimized. As a result, rotational imbalance in the propeller shaft (PS) due to the balance piece (9) can be corrected appropriately and easily.
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公开(公告)号：US20240027245A1
公开(公告)日：2024-01-25
申请号：US18266399
申请日：2021-09-07
Applicant: Hitachi Astemo, Ltd.
Inventor： Yushi ARAKI , Akira UENODAN , Nobuaki GORAI
CPC classification number: G01F1/6842 , F02D41/18
Abstract: A physical quantity detection device for reducing an influence of a sound wave generated in a turbocharger and suppressing a decrease in detection accuracy of a physical quantity including a flow rate of gas. The device detects a physical quantity of air from an intake passage of an engine equipped with a turbocharger. The physical device includes a sub-passage that takes in part of air flowing from an upstream to a downstream side of the intake passage along a first direction, and a flow rate detection unit that detects a flow rate of the air taken in the sub-passage. The sub-passage includes an inlet that opens toward the upstream side in the first direction, an outlet that opens toward the downstream side in the first direction, and an attenuation chamber that attenuates a sound wave propagating from the turbocharger to an inside of the outlet.
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公开(公告)号：US11881034B2
公开(公告)日：2024-01-23
申请号：US17791753
申请日：2020-12-25
Applicant: HITACHI ASTEMO, LTD.
Inventor： Masayuki Takemura , Takeshi Shima , Haruki Matono
CPC classification number: G06V20/588 , G06V10/443 , G06V10/7515 , G06V10/761 , G06V20/647 , G08G1/167 , H04N13/225
Abstract: Erroneous detection due to erroneous parallax measurement is suppressed to accurately detect a step present on a road. An in-vehicle environment recognition device 1 includes a processing device that processes a pair of images acquired by a stereo camera unit 100 mounted on a vehicle. The processing device includes a stereo matching unit 200 that measures a parallax of the pair of images and generates a parallax image, a step candidate extraction unit 300 that extracts a step candidate of a road on which the vehicle travels from the parallax image generated by the stereo matching unit 200, a line segment candidate extraction unit 400 that extracts a line segment candidate from the images acquired by the stereo camera unit 100, an analysis unit 500 that performs collation between the step candidate extracted by the step candidate extraction unit 300 and the line segment candidate extracted by the line segment candidate extraction unit 400 and analyzes validity of the step candidate based on the collation result and an inclination of the line segment candidate, and a three-dimensional object detection unit 600 that detects a step present on the road based on the analysis result of the analysis unit 500.
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公开(公告)号：US20240017710A1
公开(公告)日：2024-01-18
申请号：US18036068
申请日：2021-10-29
Applicant: Hitachi Astemo, Ltd.
Inventor： Koji USUI
CPC classification number: B60T13/746 , F16H25/24 , F16D51/22 , B60T1/067 , F16D65/22 , B01D46/10 , B01D46/0027 , F16H2025/2031
Abstract: An electric actuator includes a forwardly and reversely rotatable electric motor, a motion conversion mechanism configured to convert rotation of the electric motor into reciprocating linear motion of a screw shaft, an actuator case containing the electric motor and the motion conversion mechanism, and a boot covering a portion of the screw shaft that extends out of the actuator case. A vent is formed on the actuator case. The vent is configured to ventilate a sealingly closed space in the actuator case and the boot. A breathable waterproof member is provided on the vent and a cover member is also provided on the vent. The breathable waterproof member is configured to block entry and exit of water while permitting entry and exit of air. The cover member is configured to cover the vent so as to allow ventilation with outer air.
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公开(公告)号：US11877412B2
公开(公告)日：2024-01-16
申请号：US17626884
申请日：2020-07-10
Applicant: Hitachi Astemo, Ltd.
Inventor： Yoshio Kawai , Ryo Akiba
CPC classification number: H05K5/03 , H05K9/0067
Abstract: Provided is an electronic control device capable of suppressing failure of an electronic component due to static electricity. The electronic control device 100 includes a substrate 10, an electronic component 1 mounted on the substrate 10, an insulating case 20 that holds the substrate 10, a conductive cover 30 that covers the insulating case 20, a conductive base 40 that holds the insulating case 20, and a conductive fixture 21 that fixes the insulating case 20 to the conductive base 40. A distance L1 between the conductive cover 30 and the conductive fixture 21 is equal to or less than a distance L2 between the conductive cover 30 and a conductive terminal 1a of the electronic component 1.
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