Patents by Inventor Teppei Hirotsu

Teppei Hirotsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11352019
    Abstract: An electronic control device for a vehicle according to the present invention includes an action prediction unit that predicts the action of an object around the vehicle on the basis of external information acquired from external information detection units that detect external information of the vehicle, and a determination unit for a detection unit that determines whether an abnormality has occurred in the external information detection unit by comparing external information acquired from the external information detection unit at the time corresponding to a prediction result of the action prediction unit to the prediction result of the action prediction unit.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 7, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tatsuya Horiguchi, Hideyuki Sakamoto, Teppei Hirotsu
  • Patent number: 11300070
    Abstract: An electromagnetic valve control unit for detecting operation of an electromagnetic valve on the basis of a drive voltage or a drive current applied to the electromagnetic valve. The electromagnetic valve control unit includes an A/D converter, a filter, and a detection unit. The A/D converter converts the drive voltage or the drive current into a digital signal. The filter has a gain of about zero at a predetermined frequency. The detection unit detects operation of the electromagnetic valve on the basis of an output of the filter upon input of the digital signal into the filter.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: April 12, 2022
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Toshihiro Aono, Motoyuki Abe, Ryo Kusakabe, Teppei Hirotsu, Ayumu Hatanaka, Hideyuki Sakamoto, Takao Fukuda, Masahiro Toyohara, Osamu Mukaihara
  • Publication number: 20220089179
    Abstract: There are realized a vehicle control device and an electronic control system with high reliability capable of safely shifting control even when an operation abnormality occurs in a sensor around a vehicle or an arithmetic block that processes sensor fusion. The vehicle control device includes a first arithmetic block which performs sensor fusion processing based on pieces of raw data output from a plurality of surrounding environment sensors, a second arithmetic block which performs sensor fusion processing based on pieces of object data generated by processing the pieces of raw data output from the plurality of surrounding environment sensors, and a third arithmetic block which diagnoses an output result of the first arithmetic block by using the output result of the first arithmetic block and an output result of the second arithmetic block.
    Type: Application
    Filed: January 15, 2020
    Publication date: March 24, 2022
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Hideyuki SAKAMOTO, Teppei HIROTSU, Taisuke UETA, Hidetatsu YAMAMOTO
  • Publication number: 20220080987
    Abstract: Provided is a device that prevents a vehicle behavior from being unstable when an operation is continued using a degeneration function at a time of failure of a drive unit command value generation function in an autonomous driving system. A future actuator command value outputted by a main function unit for generating a drive unit command value and a simple actuator command value outputted by the degeneration function of generating a drive unit command value are synthesized using a weighting factor that changes with time.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 17, 2022
    Inventors: Teppei HIROTSU, Nobuyasu KANEKAWA, Atsushi ARATA
  • Patent number: 11232245
    Abstract: A circuit generation device that implements a standard function and a degeneration function has a first operation synthesis function of generating a circuit description based on a system operation description, there are provided a degenerate parameter extraction function of extracting a degenerate parameter from the operation description, a degeneration parameter change function of changing a value of the degeneration parameter, a second operation synthesis function of generating a degeneration circuit description based on the operation description and the degeneration parameter value, and a determination function of determining whether the performance of the degeneration circuit description satisfies a constraint condition based on the circuit description.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: January 25, 2022
    Assignee: HITACHI, LTD.
    Inventors: Teruaki Sakata, Teppei Hirotsu
  • Publication number: 20220017119
    Abstract: Provided is an automatic driving system based on a model predictive control, the automatic driving system where, in an event of a failure of an actuator, identification between a real vehicle and a vehicle model is simplified. Based on information regarding the failure of the actuator, the automatic driving system updates a spot in the vehicle model, the spot corresponding to the spot of failure detected, to a fixed value, and causes an actuator control device for the actuator, where the failure is detected, to fix a command value that is overwritten in accordance with a state of the actuator. With this configuration, the identification between the real vehicle and the vehicle model is simplified.
    Type: Application
    Filed: November 27, 2019
    Publication date: January 20, 2022
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Yuki TANAKA, Tatsuya HORIGUCHI, Teppei HIROTSU, Hideyuki SAKAMOTO
  • Publication number: 20220017114
    Abstract: There is no consideration on performing charging control on a battery necessary for limp-home travel according to a travel environment of a vehicle. It is assumed that the vehicle changes a travel lane to a second travel lane by overtaking or the like between time t1 and t0. The second power generation threshold generation unit 33 refers to the lookup table 50 illustrated in FIG. 5 and reads 70 as the second charging threshold SOCth2. Then, the second charging threshold SOCth2 is larger than the first charging threshold SOCth1 as illustrated in FIG. 6(C), and thus, the threshold selection unit 34 outputs the second charging threshold SOCth2 as the selected charging threshold SOCth. At this time, the SOC of the battery is lower than the charging threshold SOCth, and thus, the power generation command value GEN is turned on at time t1, and the power generation engine is started to charge the battery.
    Type: Application
    Filed: December 4, 2019
    Publication date: January 20, 2022
    Inventors: Teppei HIROTSU, Nobuyasu KANEKAWA, Atsushi ARATA
  • Publication number: 20220004364
    Abstract: A convolutional computation device includes: a two-dimensional circulation shift register unit that has a plurality of storage elements, cyclically shifts the data among the plurality of storage elements, provides at least one input window in a predetermined area, and selects the data stored in one of the storage elements disposed in the input window as input data; and at least one multiplier-accumulator that generates output data by performing a multiply-accumulate operation on the input data input from the two-dimensional circulation shift register unit and weight data for providing a predetermined filter.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventor: Teppei HIROTSU
  • Publication number: 20210362706
    Abstract: The reliability of path planning calculation can be evaluated with low load without using multiplexing of calculation or an additional sensor.
    Type: Application
    Filed: August 8, 2019
    Publication date: November 25, 2021
    Inventors: Tatsuya HORIGUCHI, Teppei HIROTSU, Hideyuki SAKAMOTO
  • Patent number: 11136044
    Abstract: A vehicle control device capable of improving safety, even when abnormality in the operation of an arithmetic processing unit occurs. A second microcomputer receives trajectory information transmitted from a first microcomputer via a communication line and calculates control commands to actuators to synchronize the arithmetic processing unit allowing the first and second microcomputers to be synchronized. The second microcomputer performs a calculation and compares the result with the calculation result of the first microcomputer so that the second microcomputer can accurately determine whether or not the first microcomputer is abnormal. When the abnormality occurs in the first microcomputer based on the determination, the actuators are controlled by switching to the control commands calculated by the second microcomputer which is synchronized with the arithmetic processing unit. Thus, the device performs seamless self-driving control without the occurrence of abrupt control gaps.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: October 5, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hideyuki Sakamoto, Teppei Hirotsu, Satoshi Tsutsumi, Taisuke Ueta
  • Patent number: 11128523
    Abstract: The present invention provides an electronic controller and the like capable of identifying the order of communication apparatuses connected to a bus while minimizing manufacturing cost. In the present invention, bus wiring 2 has one end connected to a port 111 and the other end connected to a port 112. A plurality of lower ECUs 301 to 304 are connected to the bus wiring 2. A current sensor CS measures current Is1 flowing through the port 111 and current Is2 flowing through the port 112 by applying current to the bus wiring 2 from each of the plurality of lower ECUs 301 to 304. The higher controller 12 identifies the order of the plurality of lower ECUs 301 to 304 on the bus wiring 2 on the basis of the current Is1 and the current Is2 which are measured for each of the plurality of lower ECUs 301 to 304.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 21, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroshi Iwasawa, Teppei Hirotsu, Mitsuhiko Watanabe
  • Patent number: 11125572
    Abstract: There is achieved an electronic control device capable of calculating an optimal travel plan even during dynamic reconfiguration of a calculation circuit configuration. When a driving state changes, a travel plan parameter generation/selection unit divides evaluation calculation units into two blocks and performs reconfiguration of the respective evaluation calculation units a plurality of times via a reconfiguration control unit. While the evaluation calculation units are reconfigured, the evaluation calculation units performs evaluation calculation, and while the evaluation calculation units are reconfigured, the evaluation calculation units perform evaluation calculation. Thus, even while some of the evaluation calculation units are being reconfigured, it is possible to continue evaluation of the travel plan in the rest of the evaluation calculation units.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 21, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryoichi Inada, Tatsuya Horiguchi, Teppei Hirotsu, Hideyuki Sakamoto
  • Publication number: 20210248395
    Abstract: image data captured from a traveling vehicle is considered, and it is not possible to reduce the transmission band of the image data. It is assumed that a radar 4 mounted in a traveling vehicle 10 detects a certain distant three-dimensional object at a time T in a direction of a distance d1 [m] and an angle ?1 . Since the vehicle 10 travels at a vehicle speed Y [km/h], it is predicted that a camera 3 is capable of capturing the distant three-dimensional object at a time (T+?T) and an angle ?1 or at a distance d2 [m]. Therefore, if a control unit 2 outputs a request to the camera 3 in advance, so as to cut out an image of the angle ?1 or the distance d2 [m] at the time (T+?T), when the time (T+?T) comes, the camera 3 transfers a whole image and a high-resolution image being a cutout image of only a partial image, to the control unit 2.
    Type: Application
    Filed: June 3, 2019
    Publication date: August 12, 2021
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tetsuya YAMADA, Teppei HIROTSU, Tomohito EBINA, Kazuyoshi SERIZAWA, Shouji MURAMATSU
  • Publication number: 20210221402
    Abstract: A prediction control device is realized which can respond to changes in the surrounding situations while the own vehicle is traveling and can perform a rapid operation during normal driving and in an emergency as if a person drives. The prediction control device includes a means (103, 104) for detecting a change amount and a change direction of surroundings and the own vehicle, and a means 105 for setting an initial value and a prediction period of a solution search calculation in a prediction control means based on the detection result. The means 105 for setting the initial value and the prediction period has a fail operational control mode in which the initial value and the prediction period set according to the change amount of the surroundings and the own vehicle is set with a previous calculation result of the solution search calculation to the initial value.
    Type: Application
    Filed: June 5, 2019
    Publication date: July 22, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Toshiaki NAKAMURA, Teppei HIROTSU, Hideyuki SAKAMOTO
  • Publication number: 20210200926
    Abstract: A circuit generation device that implements a standard function and a degeneration function has a first operation synthesis function of generating a circuit description based on a system operation description, there are provided a degenerate parameter extraction function of extracting a degenerate parameter from the operation description, a degeneration parameter change function of changing a value of the degeneration parameter, a second operation synthesis function of generating a degeneration circuit description based on the operation description and the degeneration parameter value, and a determination function of determining whether the performance of the degeneration circuit description satisfies a constraint condition based on the circuit description.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 1, 2021
    Applicant: HITACHI, LTD.
    Inventors: Teruaki SAKATA, Teppei HIROTSU
  • Publication number: 20210109564
    Abstract: There is provided a technology capable of synchronizing a plurality of timers with a simple circuit configuration in an electronic control unit that controls a vehicle. An electronic control unit according to the present invention concatenates a second timer value as the most significant bit of a first timer value reset by a synchronization signal, and counts up the second timer value by the synchronization signal.
    Type: Application
    Filed: April 6, 2018
    Publication date: April 15, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Teppei HIROTSU, Hiroshi IWASAWA, Atsushi ARATA
  • Patent number: 10961935
    Abstract: A drive device capable of detecting individual variations of an injection quantity of a fuel injection device of each cylinder and adjusting a current waveform provided to an injection pulse width and a solenoid such that the individual variations of the fuel injection devices are reduced. The fuel injection device in the present invention includes a valve body that close a fuel passage by coming into contact with a valve seat and opens the fuel passage by separating from the valve seat and a magnetic circuit constructed of a solenoid, a fixed core, a nozzle holder a housing and a needle and when a current is supplied to the solenoid a magnetic suction force acts on the needle and the needle has a function to open the valve body by colliding against the valve body after performing a free running operation and changes of acceleration of the needle due to collision of the needle against the valve body are detected by a current flowing through the solenoid.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 30, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Ayumu Hatanaka, Toshihiro Aono, Teppei Hirotsu, Hideyuki Sakamoto, Masahiro Toyohara, Osamu Mukaihara, Takao Fukuda, Yoshihito Yasukawa, Akiyasu Miyamoto
  • Patent number: 10962600
    Abstract: To carry out diagnosis of a current sensor while maintaining high reliability. An inverter control device according to the present invention controls an inverter circuit, calculates an estimated direct current value on the basis of a duty value and an alternating current sensor value output by an alternating current sensor, and performs diagnosis of a direct current sensor on the basis of the estimated direct current value and a direct current sensor value output by the direct current sensor.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: March 30, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryoichi Inada, Teppei Hirotsu, Satoru Shigeta
  • Patent number: 10955836
    Abstract: Provided is a method of detecting and preventing soft errors without performing multiplexing. As a result, it is possible to improve reliability of a device while suppressing an increase in mounting cost and reduction in operation speed accompanied with it. A diagnosis system includes an initial parameter generation unit which generates a plurality of initial parameters predicted on the basis of an external input; an operation unit which has a plurality of operators operating optimal solutions to the initial parameters by using an evaluation function describing a control object; and a diagnosis unit which diagnoses the operation unit on the basis of an output of the operation unit. When an optimal solution candidate giving an evaluation value deviating from a value taken by each evaluation value by a constant threshold or more among evaluation values corresponding to the optimal solutions to the initial parameters is found, the diagnosis unit diagnoses an error of the operation unit.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: March 23, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Horiguchi, Teppei Hirotsu, Hiroshi Iwasawa
  • Publication number: 20210053580
    Abstract: To provide an electronic control device generating low heat due to a simplified configuration and a reduced verification arithmetic load without multiplexing of sensors and calculations. A sensor fusion processing unit 4 that integrates a plurality of pieces of sensor information having been input from a plurality of first sensors 11 and second sensors 12, a behavior prediction processing unit 5 that obtains a surrounding object prediction map 8 in which a future behavior of a target object is predicted based on an own vehicle surrounding map 9 integrated by the sensor fusion processing unit 4, and a first comparison unit 102 that compares the surrounding object prediction map 8 predicted by the behavior prediction processing unit 5 with output information of each of the first sensors 11 and the second sensors 12 of the sensor fusion processing unit 4 at a predicted time are included.
    Type: Application
    Filed: December 14, 2018
    Publication date: February 25, 2021
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Tatsuya HORIGUCHI, Hideyuki SAKAMOTO, Teppei HIROTSU