Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Kyushu University

Masaki Takashima

Inao Toyoda

Keiji Horiba

Kousuke Nomura

Yasutoshi Suzuki

Takashi Ishikawa

Nobutomo Takagi

Takashi Katsumata

Ryosuke Sakai

Tomonori Suzuki

Ichiro Sasada

Akihiro Sasaki

Kazuyoshi Sumiya

Kazunori Sakai

Mikio Sugiki

A semiconductor device includes: power elements that configures an inverter; a conductive plate that electrically connects the power elements; and a current detection portion. The power elements include a first power element and a second power element. The conductive plate includes: a first carrying portion; a second carrying portion; a third carrying portion; a fourth carrying portion; a first connection portion that electrically connects the second carrying portion and the third carrying portion to connect the first power element and the second power element in series; and an output terminal electrically connected with the second carrying portion or the third carrying portion. The first carrying portion is connected with a first power source and the fourth carrying portion is connected with a second power source. The current detection portion is fixed to the output terminal and the magnetic field permeates the current detection portion.

Semiconductor device with power elements and current detection portion

A current detection system includes: first and second magnetic plates arranged in parallel with a predetermined distance; a bus bar for flowing current; and a magneto-electric conversion element converting a lateral direction component of a measurement object magnetic flux, generated by current flowing through the bus bar, to an electric signal. When an external magnetic flux in a lateral direction passes through an accommodation space between the first and second magnetic plates, a trajectory of the external magnetic flux is bent by the first and second magnetic plates, and the accommodation space is divided into a permeable space, through which the external magnetic flux passes, and a non-permeable space, through which the external magnetic flux does not pass. The bus bar is arranged in the accommodation space. The magneto-electric conversion element is arranged in the non-permeable space. The bus bar and the magneto-electric conversion element are lined in the height direction.

Electrical current detection system

A miniaturized sensor such as a micro-accelerometer includes a sensor chip having a sensor element mounted thereon, with the sensor element being oriented with its central axes passing through the corners of the sensor chip. The corners of the sensor element are thereby located substantially apart from the corners of the sensor chip, so that bending deformation which displaces corners of the sensor chip is substantially prevented from causing displacement of corners of the sensor element. Detection inaccuracy resulting from such displacement can thereby be prevented or reduced.

Sensor apparatus for detecting variations in a dynamic quantity while suppressing detection deviations that are caused by bending deformation of a sensor chip

In an anti-theft system for a vehicle, a tilt signal generating device outputs a tilt signal based on a tilt of the vehicle. A characteristic sensing device receives the tilt signal and detects a characteristic of the tilt signal. A computing device computes a change of a parameter based on the characteristic of the tilt signal. A state estimating device estimates a parking state of the vehicle based on the change of the parameter. A determination rule setting device sets a determination rule based on an estimation result of the state estimating device. A determining device generates an operational signal when the determining device determines that there is fear of theft by comparing the tilt and the determination rule. A warning device informs the fear of the theft of the vehicle based on the operational signal.

Anti-theft system for vehicle

A light-receiving element having a light-receiving portion is formed on a chip surface. A digital circuit element, an analog circuit element and a circuit adjusting element are provided for cooperatively processing a detection signal produced from the light-receiving element. And, a light-shielding film is provided for selectively setting a light-receiving region on the chip surface.

Photo sensing integrated circuit device and related circuit adjustment

Plural photodetectors for receiving light and generating detection signals. A light amount controlling portion is arranged above the photodetectors for controlling an amount of the light to the photodetectors according to an incident angle. A weighting portion for weighting sensitivities of the photodetectors respectively. The sensitivities are weighted to provide a total output characteristic of the weighted detection signals of which magnitude varies according to the incident angle. Weighting is provided by a signal processing circuit by controlling gains, or a translucent film on the photodetectors for controlling transparencies portions above respective photodetectors, or opaque films on the photodetectors for controlling amounts of the light to respective photodetectors. A first function signal may be obtained from a part of photodetectors for an air conditioner and a second function signal may be obtained from all of photodetectors for head lamp on/off controlling. Each coaxially arranged photodetector is divided to provide a semicircle or a semi-ring shape arranged with respect to the front direction of the vehicle to provide orientation angle data to control the air conditioner.

Optical sensor with directivity controlled

A light sensing apparatus for different control systems includes a photosensitive element which generates a light current depending on light incident thereto. A pre-circuit connected to the photosensitive element is operative for generating separate basic signals in response to the light current generated by the photosensitive element. Processing circuits connected to the pre-circuit are active simultaneously for converting the basic signals generated by the pre-circuit into conversion-resultant signals having different forms respectively. The conversion-resultant signals are outputted to the control systems respectively. At least one of the processing circuits may include an oscillation circuit which oscillates at a frequency depending on related one of the basic signals generated by the pre-circuit.

Growing community of inventors

Kariya, Japan

Masaki Takashima