Aisin Seiki Kabushiki Kaisha

Aisin Corporation

Other

Toyota Jidosha Kabushiki Kaisha

Hisashi Inaba

Kiyokazu Ieda

Ippei Sugae

Eiji Mushiake

Rikuo Hatano

Kohei Kurachi

Yuichi Murakami

Masahiro Hagimoto

Hiroki Okada

Tomoyuki Funayama

Masahiro Ueda

Shigeki Nishiyama

Takehiro Tabata

Tomoo Kakegawa

Eiji Niwa

Koichi Sassa

Kosuke Wakita

Shingo Fujimoto

Kazunori Sugimura

Takuya Sakiuchi

Yuichi Ukai

Toshinori Tanaka

Shinya Hozumi

A drive support device includes: an acquisition processing unit that acquires (i) a distance to an object detected based on a result of transmission of a transmission wave and reception of a reception wave that is the transmission wave having returned upon reflection by the object and (ii) a reception level of the reception wave used to detect the distance; and a detection processing unit that detects information about a height of the object, based on a relationship between the distance and the reception level that are acquired by the acquisition processing unit.

Drive support device

An object detection system includes: a plurality of object detection units. The object detection units each include a transmission and reception unit configured to transmit an ultrasonic wave and receive a reflected wave generated by reflection of the ultrasonic wave on an object, a reception circuit unit configured to detect a signal level of the reflected wave received by the transmission and reception unit, a detection unit configured to detect the object by comparing the signal level detected by the reception circuit unit with a predetermined signal threshold value, a temperature sensor configured to detect a temperature of an environment, and a detection sensitivity adjustment unit configured to adjust detection sensitivity of the reception circuit unit based on a second lowest temperature among temperatures detected by the respective temperature sensors in the plurality of object detection units.

Object detection system

A position detection system includes: a first device that is separate from a moving object, and is provided such that a position of the first device can be specified; and a second device that is mounted on the moving object. One of the first and second devices includes a first signal transmission unit that transmits a first first-signal, the other of the first and second devices includes a first signal reception unit that receives the first first-signal, one of the first and second devices includes a second signal transmission unit that transmits a first second-signal, and the other of the first and second devices includes a second signal reception unit that receives the first second-signal.

Position detection system and processing device

A distance detection apparatus includes a wave transmitter configured to transmit a transmission wave, a wave receiver configured to receive the transmission wave which is reflected by an object, a storage portion configured to store a transmission signal, a correlation processing portion configured to obtain a correlation value between the transmission signal and a reception signal corresponding to a reception wave, and a detection portion configured to detect a distance to the obstacle in a case where the correlation value indicates that the transmission signal and the reception signal are similar to each other at a level which is equal to or greater than a predetermined level.

Distance detection apparatus and object detection apparatus

An object detection system includes plural first object detection apparatuses each including a transmitting portion configured to transmit a first wave motion of a first frequency included in plural first frequencies, the transmitting portion transmitting the first wave motion of the first frequency which is different from the other first object detection apparatus concurrently with the other first object detection apparatus. The system includes a receiving portion configured to receive a reception wave, a determination portion configured to determine a correspondence relationship between one or more second frequency of one or more second wave motion included in the reception wave and the plural first frequencies, and a detection portion configured to detect information related to the object.

Object detection system and object detection apparatus

An obstacle detection sensor includes: a controller configured to determine a detection condition of an obstacle on a road; a distance sensor unit configured to acquire distance information by oscillating a vibration wave and receiving a reflected wave of the oscillated vibration wave; a communication unit configured to communicate with an outside to acquire road surface information; and a storage unit configured to store detection relationship information for identifying the obstacle based on the distance information, in which the controller compares the detection relationship information read from the storage unit with the distance information and the road surface information acquired from the distance sensor unit and the communication unit to determine the detection condition.

Obstacle detection sensor

An object detection device includes: a transducer having a vibrator transmitting and receiving an ultrasonic wave and configured to transmit a transmission signal encoded to be imparted with identification information and receive the transmission signal reflected by an object as a reception signal; a correlation processing unit acquiring a first correlation value corresponding to a degree of similarity between the identification information of the transmission and reception signals and to determine whether the reception signal to which the identification information having a predetermined level or higher degree of similarity with the identification information of the transmission signal is imparted has been received; and a detection unit detecting information about the object when determined that the reception signal to which the identification information having the predetermined level or higher degree of similarity is imparted has been received.

Object detection device and parking assistance apparatus

A door handle apparatus for a vehicle includes a door handle adapted to be provided at a vehicle exterior of a vehicle door and operated in order to open/close the vehicle door, a sensing electrode provided inside of an upper-outer surface of the door handle, a sensor for detecting a user approaching the sensing electrode on the basis of a variation of an electric capacitance generated by the sensing electrode, controlling device for controlling the vehicle door so as to be locked/unlocked on the basis of information detected by the sensor and water-removing device provided on the upper-outer surface of the door handle in order to remove water retained in the vicinity of the sensing electrode.

Door handle apparatus for vehicle

A door handle device capable of operating a door opening/closing mechanism of a vehicle is disclosed. The door handle device includes a support member, a door handle, a circuit substrate, a lock detection electrode, a capacitance sensor, and an auxiliary electrode. The circuit substrate is arranged in the door handle and includes a ground electrode. The lock detection electrode is mounted on the circuit substrate and capacitance-coupled to an outer panel of the door. The capacitance sensor is connected to the lock detection electrode and detects the issuance of a door lock command based on a change in a first capacitance between the outer panel and the lock detection electrode. The auxiliary electrode is capacitance-coupled to the ground electrode to form a second capacitance connected in parallel to the first capacitance between the auxiliary electrode and the ground electrode.

Door handle device

Provided is a capacitance detection apparatus capable of effectively discriminating between an external factor due to e.g. water drops and a human-induced operation and allowing detection of occurrence of the human-induced operation with a simple arrangement. The apparatus alternately executes a first switching control process and a second switching control process, the first and second switching control processes executing a second switch operation with different charging periods from each other. In each of the first and second switching control processes, the number of repetition times of the second switch operation is counted until the potential of a terminal of a reference capacitance changes to a set potential. Based on the number of repetition times in at least one of the two switching control processes, presence/absence of change in determined capacitance (i.e. capacitance to be determined) is determined and based on the numbers of repetition times in the two control processes, it is determined whether the change in the determined capacitance is due to an event of detection interest or not.

Capacitance detection apparatus

A transmitter portionincludes a control circuit, a driver circuit, and a wave detector circuit. The control circuitgenerates control signals Vp, Vn based on a pulsed transmission signal So. The driver circuit, which is supplied with a battery voltage Vb, generates an output signal Sa to be sent to an antennabased on the control signals Vp, Vn. The wave detector circuitoutputs a detection signal Sk having a voltage proportional to the level of the output signal Sa (transmission power level). The control circuitchanges the pulse widths of the control signals Vp, Vn based on the voltage level of the detection signal Sk. As a result, electric power consumption is reduced and enlargement of an apparatus is suppressed while maintaining the transmission power level constant.

Antenna driving apparatus

A transmission/reception antenna () comprises a core () and a coil () wound around the core (). One of a plurality of core sheets () constituting the core () is utilized as a sensor electrode (). Conductors () extending from the two ends of the coil () are connected to a transmission/reception drive circuit (). The conductor () extending from a capacitance detector () is connected to one of the conductors () extending between the coil () and the transmission/reception drive circuit (). Consequently, the capacitance detector () is alternately connected to the sensor electrode () through a parasitic capacitance Cgenerated between the coil () and the sensor electrode () (core sheet ()).

Antenna device and door handle device

A capacitance detection apparatus includes a detection electrode for detecting approach of an object on the basis of a change of capacitance, a calculating circuit for calculating a value associated with the capacitance change, a judging circuit for judging whether the calculated value is a normal or initial value calculated after or before a predetermined period of time lapse from a start time of the capacitance detection apparatus, an initial reference value-determining circuit for determining an initial reference value, a difference calculating circuit for calculating a difference between the normal value and a value calculated earlier than a time when the normal value is calculated by the predetermined period of time or longer or between the initial value and the initial reference value, and a determining circuit for determining whether the object is approaching by comparing the difference with a predetermined threshold value.

A starter circuit includes a start detection circuit for detecting a change of an input signal and outputting a start digital signal, a digital OR circuit for outputting a determination digital signal based on the start digital signal, a power supply circuit being activated based on the determination digital signal, and a digital control circuit being operated based on a power from the power supply circuit. The digital control circuit inputs a retention signal to the digital OR circuit for maintaining an operation of the power supply circuit and a reset signal to the start detection circuit for resetting the start detection circuit.

Starter circuit

A capacitance change detection device includes a sensor electrode, and an electrode capacitance measurement device for measuring capacitance of the sensor electrode on the basis of a correlation value based on a reference capacitance at every first predetermined time. A detection signal is generated when a current measurement value of capacitance is changed by equal to or greater predetermined threshold value than a measurement value obtained a second predetermined time before the current measurement value is measured. The capacitance change detection device further includes a sensitivity compensation capacitance for generating capacitance variations equivalent to specific variations of capacitance of the sensor electrode, and being switched between a connected state and a disconnected state. The threshold value is determined as a difference between measurement values of capacitance of the sensor electrode measured at the connected state and at the disconnected state. The threshold value is renewed at every third predetermined time.

Growing community of inventors

Kariya, Japan

Hisashi Inaba