Fujitsu Corporation

Mitsuru Ochi

Tomonori Ikeya

Junko Kajiki

Kazuhiko Shite

A radar apparatus to detect an object includes a detecting unit configured to detect the object based on a reflected wave received in response to transmitting a transmission wave, in order to output a detection result of the object, a storage unit including a first storage part to store the detection result, and a second storage part to store a copy of information stored in the first storage part based on a copy command, and a selecting unit configured to select one of the first storage part and the second storage part as an access destination, in order to output the detection result stored in one of the first storage part and the second storage part selected as the access destination.

Radar apparatus and computer-readable storage medium

An apparatus includes: a processor that executed a procedure, the procedure including: detecting a moving vehicle as the moving vehicle approaches a vehicle queue based on a signal from a sensor, acquiring a position and a speed of the moving vehicle based on the signal, calculating a stop position of the moving vehicle based on a change in the position and the speed of the moving vehicle, and calculating a length of the vehicle queue based on the stop position of the moving vehicle.

Apparatus for measuring vehicle queue length, method for measuring vehicle queue length, and computer-readable recording medium storing computer program for measuring vehicle queue length

A monitoring device includes a memory configured to store first and second background information related to positional information of a fixed object existing in a detection area of a radar device that receives a reflected wave from an object existing at an emission destination of an emitted radar wave and detects position and moving velocity information of the object as detection information of the object; and a processor configured to detect, upon receiving a first specified signal, a temporary fixed object existing in a detection area of the radar device by using the detection information and the first background information stored in the memory, and to detect, upon receiving a second specified signal, a movement object existing in the detection area of the radar device by using the detection information and the second background information stored in the memory.

Monitoring device and monitoring method

An object detection method includes outputting a radio wave, receiving a reflected wave of the radio wave, generating a plurality of object information each indicating a location of each of a plurality of objects with respect to a predetermined reference point based on the radio wave and the reflected wave, calculating a first distance between an observation reference line which represents a shape and a location of a target area for detection preset depending on a target object for detection, and each of the plurality of objects, based on the observation reference line information stored in advance indicating a shape and a location of the observation reference line and the object information, selecting a predetermined number or less of the object information in ascending order of the first distance among the plurality of the object information as the object information to be output, and outputting the selected object information.

Object detection apparatus and method

A traffic flow measuring apparatus includes a processor configured to judge a size of a vehicle, depending on a detection frequency or a non-detection frequency of a reflected wave from the vehicle with respect to a transmission wave transmitted from a radar apparatus, within a detection time of the reflected wave from the vehicle, set according to the detection of the reflected wave.

Traffic flow measuring apparatus and method, and computer-readable storage medium for judging size of vehicle depending on number of times reflected wave from vehicle is detected within detection time

A detection information memory stores, for each object, detection information that includes a distance to and a traveling speed of an object for each predetermined timing detected by a radar apparatus which detects detection information on the object, and the radar apparatus detects the detection information by receiving a reflected wave of an irradiated radar wave from the object. A predictor predicts, for each object, the detection information to be newly detected by the radar apparatus from a history of the detection information. A tracker tracks the object by identifying the object which is the target of the detection information newly detected using a result of the predictor; a determiner determines whether the object is a fixed object or a moving object. An output unit outputs the detection information on the object determined to be the moving object by the determiner.

Moving object tracking apparatus, and moving object tracking method

Two radar devices are installed for adjacent lanes. A memory sequentially stores a received power value at a time when the two radar devices receive the reflected wave from a vehicle at specified time intervals. A calculator calculates, when a vehicle moves in a direction approaching the two radar devices, as a representative value of the received power at a specified time, a weighted average value when weights, which become heavier as an acquisition time of the received power value becomes farther from the specified time, are assigned to a specified number of received power values, whose acquisition time is prior to a specified time, where a priority is given to the received power values whose acquisition time is close to the specified time. A discriminator determines a lane in which the vehicle is traveling according to a result of comparing the sizes of the calculated representative value.

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Kawasaki, Japan

Mitsuru Ochi