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公开(公告)号：US11183963B2
公开(公告)日：2021-11-23
申请号：US16840725
申请日：2020-04-06
申请人： DENSO CORPORATION
发明人： Takaharu Kozawa
摘要： Driver circuits are provided in correspondence to switching elements of an inverter to output gate signals to the switching elements and built in an IC package in an abnormality detection device (ECU). Motor relays are provided in motor current paths between inter-arm connection points and multi-phase motor windings. Pull-up resistors connect a power supply line and the inter-arm connection points. Pull-down resistors connect the inter-arm connection points and the ground. A checking unit acquires a voltage corresponding to a voltage of each inter-arm connection point as a terminal voltage and checks a short-circuit failure or an open-circuit failure of each motor relay or a disconnection failure of each winding based on the terminal voltage. The pull-up resistors and the pull-down resistors are provided within the IC package in which the driver circuits are built.
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公开(公告)号：US10759470B2
公开(公告)日：2020-09-01
申请号：US15158189
申请日：2016-05-18
申请人： DENSO CORPORATION
发明人： Shuji Kuramitsu , Katsuhiko Hayashi , Takaharu Kozawa , Koichi Nakamura , Masaya Taki , Toshimitsu Sakai
摘要： A sensor device includes a sensor section having a plurality of sensor elements sensing a physical quantity regarding a magnetic flux collecting module, an output circuit generating and outputting an output signal including data signals respectively corresponding to sensing values from the sensor elements, and an ECU obtaining the output signal. The ECU includes an abnormality determiner identifying an abnormal sensor element. When at least two of the plurality of sensor sections respectively have at least one normal sensor element, a sub-sensor section transmits the output signal therefrom to the ECU at a shifted output timing from an output timing of the output signal from a main sensor section. The amount of such a shift of the output timing is shorter than one signal cycle of the output signal.
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公开(公告)号：US20180229761A1
公开(公告)日：2018-08-16
申请号：US15891720
申请日：2018-02-08
申请人： DENSO CORPORATION
发明人： Toshihiro Fujita , Takaharu Kozawa , Shuhei Miyachi , Katsuhiko Hayashi , Shuji Kuramitsu , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Masaya Taki , Toshimitsu Sakai
CPC分类号： B62D5/046 , B62D5/0406 , B62D5/0487 , B62D5/049 , B62D15/0235 , G01B7/30 , G01D3/08 , G01D5/145 , G01L5/221 , H02P6/16 , H02P27/06 , H02P29/0241
摘要： In a rotation detecting apparatus, while a switch is in an on state so that electrical power is supplied from a power source to a controller via the switch, the controller receives, as a first output signal, an output signal output from an output unit of a first rotation sensor, and receives, as a second output signal, an output signal output from an output unit of the second rotation sensor. The first output signal includes at least the first rotational information and the second rotational information based on the first rotation sensor, and the second output signal includes at least the first rotational information and the second rotational information based on the second rotation sensor. The controller determines whether there is a malfunction in each of the first and second rotation sensors as a function of the first output signal and the second output signal.
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公开(公告)号：US20170291640A1
公开(公告)日：2017-10-12
申请号：US15479066
申请日：2017-04-04
申请人： DENSO CORPORATION
发明人： Toshihiro Fujita , Hideki Kabune , Katsuhiko Hayashi , Takaharu Kozawa , Shuhei Miyachi , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Shuji Kuramitsu , Toshimitsu Sakai , Masaya Taki
CPC分类号： B62D15/0235 , B62D5/0409 , B62D5/049 , B62D15/021 , G01D5/14 , G01D5/145 , G01D18/00
摘要： In a rotation detecting apparatus, a sensor includes a sensor element outputting a measurement value representing rotation of a detection target, and a circuit module. The circuit module includes a rotational angle calculator calculating, based on the measurement value, rotational angle information indicative of a rotational angle of the detection target. The rotational angle calculator generates a rotational angle signal including the rotational angle information. The circuit module includes a rotation number calculator calculating, based on the measurement value, rotation number information representing the number of rotations of the detection target. The rotation number calculator generates a rotation number signal including the rotation number information. An output unit outputs, as an output signal, a series of the rotational angle signal and the rotation number signal. A controller obtains the output signal from the communicator, and calculates, based on the output signal, information about the rotation of the detection target.
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公开(公告)号：US20160362137A1
公开(公告)日：2016-12-15
申请号：US15178425
申请日：2016-06-09
申请人： DENSO CORPORATION
发明人： Masaya Taki , Toshimitsu Sakai , Kouichi Nakamura , Shuji Kuramitsu , Takaharu Kozawa , Katsuhiko Hayashi
CPC分类号： B62D15/025 , B62D5/0457 , B62D5/0481 , B62D5/0484 , B62D6/002 , H04L7/0041 , H04L67/12 , Y04S40/18
摘要： A communication system includes a sensor apparatus, which includes sensing elements and a transmission circuit, and a microcomputer, which includes a reception circuit, a difference calculator, and a differential calculator. The transmission circuit shifts a transmission time point of one of sensor signals including sensor value detected by one of the sensing elements by a predetermined period with respect to a transmission time point of another one of sensor signals including sensor value detected by another one of the sensing elements. The predetermined period is set shorter than a transmission cycle of the transmission circuit. The difference calculator calculates a difference value so that an offset error among the sensing elements is compensated or a fluctuation caused by a variation in slopes of output characteristics of the sensing elements is reduced.
摘要翻译： 通信系统包括传感器装置，其包括感测元件和发送电路，以及包括接收电路，差分计算器和差分计算器的微计算机。 传输电路将包括感测元件之一检测到的传感器值的传感器信号之一的传输时间点相对于传感器信号的另一个的传输时间点移动预定的周期，包括由传感器中的另一个检测到的传感器值 元素。 预定周期被设定为短于发送电路的发送周期。 差分计算器计算差值，使得感测元件之间的偏移误差被补偿，或者由感测元件的输出特性的斜率的变化引起的波动减小。
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公开(公告)号：US20160355211A1
公开(公告)日：2016-12-08
申请号：US15173117
申请日：2016-06-03
申请人： DENSO CORPORATION
CPC分类号： B62D5/0457 , B62D5/0481 , B62D5/0484 , G05B21/02 , G05B2219/37532
摘要： A communication system includes a sensor apparatus transmitting a sensor signal including detection information of a detection target as a digital signal and a microcomputer receiving the sensor signal through a signal line and performing a control operation at a predetermined operation cycle based on the sensor signal that is received. The microcomputer transmits, to the sensor apparatus, a synchronization signal which is synchronized with the predetermined operation cycle of the microcomputer. The sensor apparatus transmits the sensor signal at a predetermined constant cycle except when the synchronization signal transmitted by the microcomputer is received. The sensor apparatus changes a transmission timing of the sensor signal corresponding to the synchronization signal when the synchronization signal transmitted by the microcomputer is received.
摘要翻译： 通信系统包括：传感器装置，其将包含检测对象的检测信息的传感器信号作为数字信号，以及通过信号线接收传感器信号的微型计算机，基于传感器信号，以规定的动作周期进行控制 收到了 微型计算机向传感器装置发送与微计算机的预定操作周期同步的同步信号。 除了接收到微型计算机发送的同步信号之外，传感器装置以预定的恒定周期发送传感器信号。 当接收到由微型计算机发送的同步信号时，传感器装置改变与同步信号相对应的传感器信号的发送定时。
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公开(公告)号：US20160294539A1
公开(公告)日：2016-10-06
申请号：US15086643
申请日：2016-03-31
申请人： DENSO CORPORATION
发明人： Takaharu Kozawa , Hideki Kabune , Toshihiro Fujita , Katsuhiko Hayashi , Kouichi Nakamura , Shuji Kuramitsu , Toshimitsu Sakai , Masaya Taki
CPC分类号： H04L7/0041 , G06F13/40 , H04J3/0638 , H04L12/40 , H04L12/40013 , H04L25/49 , H04L67/12 , H04Q9/04 , H04Q2209/845
摘要： A communication device includes: a plurality of sensors, each of which includes at least one sensor element that detects information relating to a single detection target and an output circuit that generates an output signal based on a detection signal of the sensor element and transmits the output signal; and a controller that acquires the output signal. One of the sensors transmits the output signal to the controller at an output timing that is shifted, by a predetermined period shorter than a length of one period of the output signal, from another output timing when another one of the sensors transmits the output signal.
摘要翻译： 通信装置包括：多个传感器，每个传感器包括检测与单个检测目标有关的信息的至少一个传感器元件和基于传感器元件的检测信号产生输出信号的输出电路，并将该输出 信号; 以及获取输出信号的控制器。 其中一个传感器在输出定时将输出信号传送到控制器，该输出定时在另一个传感器发送输出信号时从另一个输出定时偏移了比输出信号的一个周期的长度短的预定周期。
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公开(公告)号：US09346488B2
公开(公告)日：2016-05-24
申请号：US14468637
申请日：2014-08-26
申请人： DENSO CORPORATION
发明人： Takaharu Kozawa
IPC分类号： B62D5/04
CPC分类号： B62D5/049 , B62D5/0463
摘要： An electronic control system in which a sensor transmits a data to a control unit is provided. In one embodiment, the sensor includes a first detector and a second detector each converting a physical quantity of a detection target into a digital data. An output portion of the sensor outputs in turn a normal data and a monitor data associated with each other. The normal data is the digital data outputted from the first detector, and the monitor data is a reversed data of the digital data outputted from the second detector. The control unit determines that at least one of the first detector, the second detector and the output portion has failure when the reversed data does not match the normal data.
摘要翻译： 提供一种其中传感器将数据发送到控制单元的电子控制系统。 在一个实施例中，传感器包括第一检测器和第二检测器，每个将检测目标的物理量转换为数字数据。 传感器的输出部分依次输出正常数据和相互关联的监视数据。 正常数据是从第一检测器输出的数字数据，监视数据是从第二检测器输出的数字数据的反转数据。 当反转的数据与正常数据不匹配时，控制单元确定第一检测器，第二检测器和输出部分中的至少一个具有故障。
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公开(公告)号：US11465683B2
公开(公告)日：2022-10-11
申请号：US16654314
申请日：2019-10-16
申请人： DENSO CORPORATION
发明人： Takaharu Kozawa , Shuji Kuramitsu , Koichi Nakamura , Yuki Watanabe , Atsuko Oka , Toshihiro Fujita , Shuhei Miyachi , Masaya Taki , Toshimitsu Sakai , Katsuhiko Hayashi
IPC分类号： B62D15/02 , B60R16/027 , B62D5/04
摘要： A steering angle detection device is provided with a plurality of rotation angle sensors and a plurality of control units. The rotation angle sensors are capable of at least continuously calculating a rotation speed while an ignition switch of a vehicle is turned off, and are provided so as to correspond to steering angle calculation units which calculate steering angle based on the rotation speed and a rotation angle acquired from the rotation angle sensors and midpoint information related to the neutral position of a steering member. Power supplies are provided on a per-system basis. The rotation angle sensors or the control units are capable of holding the midpoint information while the ignition switch is turned off. If a power supply abnormality resulting in power supply failure occurs in some of the systems, the control unit of the abnormal system acquires the midpoint information and the rotation speed from the control unit of a normal system when the ignition switch is turned on.
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公开(公告)号：US11345397B2
公开(公告)日：2022-05-31
申请号：US16668321
申请日：2019-10-30
申请人： DENSO CORPORATION
IPC分类号： B62D5/04
摘要： Switching elements are mounted on a substrate and switch energization of motor windings. A lead wire set connects phase coils of the motor windings to the substrate. The switching elements, the lead wire set, a power terminal which is a power supply terminal and a ground terminal, and a control circuit unit are provided for each system. The switching elements, the lead wire set and the power terminal are collectively arranged in a power region for each system, and the lead wire sets are arranged in rotational symmetry.
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