-
公开(公告)号：US20230056917A1
公开(公告)日：2023-02-23
申请号：US17834309
申请日：2022-06-07
Inventor： Hiroki YAMASHITA , Atsushi SEKI
IPC: G01S15/931
Abstract: An object detection system includes distance measurement sensors and a hardware processor functioning as a wave transmission control circuit and a determination circuit. The distance measurement sensors provided at different positions in a vehicle. The wave transmission control circuit sets one of the distance measurement sensors as a top of a wave transmission order. A detection range of the one of the distance measurement sensors covers a region where an object is located. The object has been detected through preliminary detection when power supply to the vehicle is started. The wave transmission control circuit then repeats a cyclic wave transmission control on the distance measurement sensors to emit ultrasonic waves sequentially in the wave transmission order. The determination circuit determines an object as a detection target object when any one of the distance measurement sensors has detected the object a predetermined number of times.
-
公开(公告)号：US20230396156A1
公开(公告)日：2023-12-07
申请号：US18453836
申请日：2023-08-22
Inventor： Hideki NAKATA , Atsushi SEKI
CPC classification number: H02M1/4233 , H02M1/36 , H02M7/1555 , H02M1/0085 , H02M7/125
Abstract: In a switching power supply device, a control circuit controls a first thyristor, a second thyristor, and a switching element according to an input voltage. The control circuit maintains the first thyristor in an on state while maintaining the second thyristor and the switching element in an off state in a first period in which the absolute amplitude value is equal to or less than a first threshold value within the latter half of a first half-cycle of the input voltage at startup, and maintains the second thyristor in an on state while maintaining the first thyristor and the switching element in an off state in a second period in which the absolute amplitude value is equal to or less than a second threshold value within the latter half of a second half-cycle of the input voltage at startup. The second half-cycle is the half-cycle following the first half-cycle.
-
公开(公告)号：US20230299667A1
公开(公告)日：2023-09-21
申请号：US18165722
申请日：2023-02-07
Inventor： Hideki NAKATA , Atsushi SEKI , Junichi YUKAWA
CPC classification number: H02M1/44 , H02M3/155 , B60R16/02 , G01R31/282
Abstract: A noise reduction device according to one embodiment includes a noise reduction circuit and a failure diagnosis circuit. The noise reduction circuit generates an offset signal with reverse polarity of a noise component generated in a load. The failure diagnosis circuit detects a level of the offset signal. The failure diagnosis circuit determines whether or not a detected level of the offset signal deviates from an appropriate range. The failure diagnosis circuit diagnoses, on the basis of a determination result, whether or not a failure has occurred in the noise reduction circuit.
-
Patent Agency Ranking
公开(公告)号：US20230268818A1
公开(公告)日：2023-08-24
申请号：US18166287
申请日：2023-02-08
Inventor： Hiroyuki HOSOI , Atsushi SEKI
CPC classification number: H02M1/0048 , H02M1/08 , H02M7/219 , H02M3/01 , H02M3/33573 , H02J7/02 , H02J2207/20
Abstract: A charging system according to the present disclosure includes an AC-DC converter, a DC-DC converter, and a control circuit. The AC-DC converter is connected between an input node and an intermediate node. The AC-DC converter is connectable to a power source via the input node. The DC-DC converter is connected between the intermediate node and an output node. The DC-DC converter is connectable to a battery via the output node. The control circuit is configured to control a voltage of the intermediate node so as to reduce a sum of a loss in the AC-DC converter and a loss in the DC-DC converter, in accordance with a first parameter, a second parameter, and a third parameter. The first parameter is related to input power of the AC-DC converter. The second parameter is related to output power of the DC-DC converter. The third parameter is related to an ambient temperature.
-
公开(公告)号：US20220317295A1
公开(公告)日：2022-10-06
申请号：US17703363
申请日：2022-03-24
Inventor： Hiroki YAMASHITA , Atsushi SEKI
IPC: G01S15/931 , G06V20/58 , G01S13/931 , G01S13/86 , G01S13/42
Abstract: An object detection device according to the present disclosure, installed in a vehicle, includes a plurality of ranging sensors and each including a transmitter configured to transmit ultrasonic waves and a receiver configured to receive reflected waves of the ultrasonic waves transmitted by the transmitter and reflected by an object around the vehicle, and processing circuitry configured to detect the object around the vehicle based on the reflected waves received by the receiver during a wave receiving period until a predetermined period of time elapses from transmission of the ultrasonic waves by the transmitter. The processing circuitry is configured to acquire an imaged image imaged by an in-vehicle camera that images surroundings of the vehicle. The processing circuitry is configured to determine whether a specific object is contained based on the imaged image. The processing circuitry is configured to set the wave receiving period from a first wave receiving period to a second wave receiving period longer than the first wave receiving period when the specific object is determined to be contained in the imaged image.
-
公开(公告)号：US20220297684A1
公开(公告)日：2022-09-22
申请号：US17684847
申请日：2022-03-02
Inventor： Shingo KAWAHARA , Atsushi SEKI
IPC: B60W30/09
Abstract: A driving support apparatus includes a memory, and a hardware processor coupled to the memory. The hardware processor is configured to detect an obstacle; control a driving force of the vehicle to perform collision avoidance control for the obstacle; calculate a reduction amount of the driving force when the vehicle has climbed over a target object, in accordance with a distance between the vehicle and the obstacle when the vehicle has climbed over the target object; and control the collision avoidance control so as to gradually increase the driving force from an initial driving force being a driving force smaller than required driving force determined from an accelerator position of an accelerator pedal until a vehicle speed of the vehicle reaches a set vehicle speed, and so as to reduce the driving force by the reduction amount when the vehicle speed of the vehicle reaches the set vehicle speed.
-
公开(公告)号：US20220297600A1
公开(公告)日：2022-09-22
申请号：US17688311
申请日：2022-03-07
Inventor： Shingo KAWAHARA , Atsushi SEKI
IPC: B60Q9/00
Abstract: A vehicle periphery warning device includes a detector device and a hardware processor. The detector device detects a second vehicle differing from a first vehicle. The hardware processor functions as a setting unit, an activation controller, and a corrector. The setting unit serves to set a warning area on a downstream side in a traveling direction of the first vehicle in accordance with an angle between the traveling direction of the first vehicle and a traveling direction of the second vehicle. The activation controller serves to, when the second vehicle enters the warning area, activate a warning operation activator device performing a warning operation. The corrector serves to correct the warning area when accuracy of detecting the second vehicle by the detector device is lower than a predetermined degree of accuracy.
-
公开(公告)号：US20220255453A1
公开(公告)日：2022-08-11
申请号：US17667324
申请日：2022-02-08
Inventor： Hideki NAKATA , Atsushi SEKI
Abstract: In a switching power supply device, a control circuit controls a first thyristor, a second thyristor, and a switching element according to an input voltage. The control circuit maintains the first thyristor in an on state while maintaining the second thyristor and the switching element in an off state in a first period in which the absolute amplitude value is equal to or less than a first threshold value within the latter half of a first half-cycle of the input voltage at startup, and maintains the second thyristor in an on state while maintaining the first thyristor and the switching element in an off state in a second period in which the absolute amplitude value is equal to or less than a second threshold value within the latter half of a second half-cycle of the input voltage at startup. The second half-cycle is the half-cycle following the first half-cycle.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.019 seconds)
