Aisin Corporation

Aisin Seiki Kabushiki Kaisha

Ippei Sugae

Hisashi Inaba

Koichi Sassa

Kosuke Wakita

Shingo Fujimoto

Kiyokazu Ieda

Eiji Niwa

Atsuo Fukaya

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 device includes: a transmission and reception unit configured to transmit a transmission wave from a movable body moving on a road surface and receive a reflected wave from an object; and a generation unit configured to generate road surface information regarding a change in the road surface based on a difference between echo information indicating a change over time in an intensity of the reflected wave received by the transmission and reception unit and reference echo information indicating a predetermined change over time in an intensity of a reflected wave from the road surface.

Detection device for detecting road surface information related to movable body and control thereof

An object detection device includes: a transmitter transmitting a transmission wave; a receiver receiving a reception wave reflected by an object; a CFAR processor acquiring a CFAR signal at a detection timing by CFAR processing based on a value of a first processing target signal and an average value of values of second processing target signals; a detection processor detecting information related to the object based on a comparison between the CFAR signal and a threshold; and a threshold processor setting, when the detection timing belongs to a predetermined first section, the threshold as a first threshold calculated in consideration of a detection result of a temperature sensor, and setting, when the detection timing belongs to a predetermined second section, the threshold as a second threshold calculated without considering the detection result of the temperature sensor.

Object detection device

An object detection device includes: a transmitter transmitting a transmission wave to an outside including a road surface; a receiver receiving a reflected wave of the transmission wave being reflected by an object as a reception wave; a CFAR processor acquiring a CFAR signal at a predetermined detection timing by CFAR processing based on a value of a first processing target signal based on a reception wave received at the detection timing and an average value of values of second processing target signals based on the reception waves received in predetermined sections before and after the detection timing; and an estimator estimating an absorption and attenuation value corresponding to the average value based on a road surface reflection estimation expression that defines a relation between the average value and the absorption and attenuation value in advance.

An object detection device includes: a transmission and reception unit configured to transmit a transmission wave including an ultrasonic wave having directivity in a direction parallel or substantially parallel to a traveling direction of a movable body, and receive a reflected wave from an object; a determination unit configured to determine presence or absence of an abnormality based on a predetermined reference distance and a downward distance between the transmission and reception unit and an object present below the transmission and reception unit in a vertical direction, the downward distance being calculated based on a reflected wave of an ultrasonic wave of the transmission wave traveling downward in the vertical direction from the transmission and reception unit; and an output unit configured to output information regarding the abnormality.

Object detection device and movable body control device

An object detector includes: a transmission and reception unit that transmits a transmission wave and receives a reflection wave from an object; an acquisition unit that detects the reflection wave having a signal level above a threshold to acquire distance information indicating a distance from the transmission and reception unit to the object; a sort processing unit that sets a priority of the distance information to be higher as a difference between a signal level corresponding to the distance information and the threshold is larger when a plurality of pieces of the distance information are acquired in a predetermined period; and an output control unit that outputs the plurality of pieces of the distance information in descending order of the priority.

Object detector

An object detection device includes: a transmission unit transmitting a first transmission wave; a reception unit receiving a first reception wave reflected by an object; a signal processing unit sampling a first processing target signal according to the first reception wave and acquiring a difference signal based on a difference between the first processing target signal for at least one sample at a certain detection timing, and the first processing target signal for a plurality of samples in at least one of first and second periods; a threshold setting unit setting a threshold as a comparison target with the value of the difference signal, based on variation in the values of the first processing target signal for the plurality of samples; and a detection unit detecting information about the object at the detection timing based on a comparison result between the value of the difference signal and the threshold.

An object detection device includes: a transmission unit configured to transmit a transmission wave; a reception unit configured to receive a reception wave, which is the transmission wave reflected by and returned from an object, until a predetermined measurement time elapses after the transmission wave is transmitted; a detection unit configured to detect the object based on distance information based on the reception wave received by the reception unit; and a reception control unit configured to set the measurement time after the detection of the object to be shorter than the measurement time after a non-detection of the object.

An object detector includes: a triangulation calculation unit that performs triangulation calculation for detecting a location of an object based on first distance information calculated based on direct waves in which transmitted waves transmitted from a first transmission and reception unit are reflected by an object and received by the first transmission and reception unit, and second distance information calculated based on indirect waves in which transmitted waves transmitted from a second transmission and reception unit arranged in a location different from the first transmission and reception unit are reflected by an object and received by the first transmission and reception unit; and a prohibition processing unit that prohibits triangulation calculation when a difference between first velocity information indicating a velocity of an object calculated based on the direct waves and second velocity information indicating a velocity of an object calculated based on the indirect waves exceeds a predetermined range.

An object detection system includes: a transmission unit configured to sequentially transmit a plurality of transmission waves to which identification information different from one another is applied; a reception unit configured to sequentially receive a plurality of reception waves respectively corresponding to the plurality of transmission waves returned in response to reflection by an object after all the plurality of transmission waves are transmitted by the transmission unit; and a detection processing unit configured to detect information related to the object based on a relationship between the plurality of transmission waves and the plurality of reception waves.

Object detection system

An object detection device that detects an object existing around a moving body moving on a road surface by a TOF method, the object detection device includes: a first acquisition unit that acquires target information including distance information of a detection target on the basis of a comparison result between a signal level of a reflected wave and a first threshold value; a second acquisition unit that acquires road surface information including distance information of the road surface on the basis of a comparison result between the signal level of the reflected wave and a second threshold value; and a setting unit that sets the second threshold value so that an amount of the distance information acquired within a predetermined period does not exceed a predetermined amount.

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

According to one embodiment, a vehicle guidance device is to be installed in a vehicle for providing path guidance to the vehicle. The device includes a plurality of receivers that receives a ranging information signal via a ultrasonic-wave ranging sensor, the ranging information signal including an ultrasonic-wave ranging signal on which path guidance information is superimposed, the ultrasonic-wave ranging signal being for measuring a distance to an object; an information extractor that extracts, for each of the receivers, the path guidance information from the ranging information signal; and a path guide that provides the path guidance on the basis of a distance corresponding to the ultrasonic-wave ranging signal and the path guidance information.

Vehicle guidance device, method, and computer program product

An object detection device includes: a transmission/reception unit that has a vibrator capable of transmitting and receiving ultrasound, that causes the vibrator to transmit transmission signals at different timings, and that receives the reception signals returning after being reflected on a circumferentially existing object; an acquisition unit that acquires a first distance to the object, based on a time difference between a transmission timing of a first transmission signal and a reception timing of a first reception signal, and that acquires a relative speed of the object, based on a frequency difference between the first transmission signal and the first reception signal; an estimation unit that estimates a second distance to the object at a transmission timing of a second transmission signal to be transmitted subsequently to the first transmission signal; and an adjustment unit that adjusts the number of waves or a transmission time of the second transmission signal.

Growing community of inventors

Kariya, Japan

Ippei Sugae