Hitachi, Ltd.

Hitachi Car Engineering Co., Ltd.

Other

Shin Caterpillar Mitsubishi Ltd.

Kazuaki Takano

Hiroshi Kuroda

Satoru Kuragaki

Kazuto Nakamura

Mitsushige Suzuki

Ryuji Fukute

Toshimichi Minowa

Mitsuo Kayano

Terumi Nakazawa

Hiroshi Takenaga

Tokuji Yoshikawa

Mitsuru Nakamura

Kazuhiko Hanawa

Shirou Oouchi

Makoto Shioya

Shiho Izumi

Tatsuhiko Monji

Kozo Nakamura

Atsushi Okonogi

Yasunari Tanaka

Takuya Imaide

Yoshinori Endo

Toshio Manaka

Kazuhiko Sato

Takao Kojima

Hiroshi Kondoh

Norio Nakajima

Mitsuhide Sasaki

Jiro Takezaki

Hiroto Morizane

Kenichirou Kurata

Tsuyoshi Doi

Naoyuki Tanaka

Noriharu Sato

Nobuyuki Ueki

Jie Bai

Shigemi Takeuchi

Fumihiko Okai

Mikito Tsubota

Naotaka Dohke

Akitoshi Nishikawa

Kenichi Mitzuishi

Shigeaki Matsubara

Atsushi Okonogii

Yuki Takemoto

Toshiharu Iizasa

Eiryoh Ondoh

Tatsuhiko Monzi

Eiryo Ondo

Hiroshi Kondo

One of the objects of the present invention is to reduce the size of a radar device mounted on a vehicle body. To achieve the object, one aspect of the invention provides a radar device, which is mounted on a vehicle body and detects a target present in a moving direction of the vehicle body, with (1) a transmitting antenna for transmitting a mm-Wave that forms an electric field having a width equivalent to the width of the vehicle body at a position away in a moving direction of the vehicle body by a distance corresponding to the most-approached distance defined between the vehicle body and the target and (2) two receiving antennas for receiving the reflected mm-Waves at mutually different positions.

Radar device

A power supply apparatus controls the gate and drain power supplies at the rise time so that an output voltage of the gate power rises earlier than that of the drain power supply. Another power supply control apparatus controls the gate and drain power supplies at the fall time so that an output voltage of the gate power supply fails later than that of the drain power supply. Another power supply control apparatus turns off the drain supply of the FET among power supplies when it is detected by a voltage monitor whenever either of output voltages or the power supplies are not within said specified range.

Radar system and car radar system

To provide a radar system for controlling a gate power supply and drain power supply of a MMIC (microwave monolithic IC), protecting the MMIC at the time of start and shut-off, and simultaneously avoiding an occurrence of a failure in the MMIC due to a residual charge and an abnormal supply potential at the time of shut-off. A power supply control means controls the gate and drain power supplies at the rise time so that an output voltage of the gate power supply rises earlier than that of the drain power supply. Another power supply control means controls the gate and drain power supplies at the fall time so that an output voltage of the gate power supply falls later than that of the drain power supply. Another power supply control means turns off the drain power supply of the FET among power supplies when it is detected by a voltage monitoring means that even either of output voltages of the power supplies is not within said specified range.

In order to magnetically shield the transmission line which connects the external connector mounted on the outer housing with the internal circuit and also to make it possible to freely mount the external connector without being limited by the position of the internal circuit, an outer housingconsists of an outer housing main bodyand a shielding layerapplied to the inner-periphery surface of the outer housing. An transmission lineextends from the internal circuit through the outer-periphery side of the shielding layerof the outer housingalong the shielding layerto the desired position, where the external connectoris placed.

Vehicle-onboard signal processing device and vehicle-onboard radar system

In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following travel, even in a condition in which the relative speed is 0. By combining the two-frequency CW modulation method with the frequency pulse CW modulation method, that is, by using combination with the two-frequency CW method when the relative speed occurs and the frequency pulse CW method when the relative speed is close to 0, even if the relative speed is 0, the IF signal obtained from the reflected wave from the forward vehicle can be generated to detect the existence of the ACC target vehicle, so that it is possible to realize a stable ACC following travel.

Radio-wave radar system and adaptive cruise control system

In a vehicular control device, it is necessary to measure or calculate six physical quantities-forward-reverse speed, left-right speed, vertical speed, pitch angle, roll angle, and angle of sideslip-representing vehicular movement and to control the braking force of each wheel and/or the damping coefficient of each suspension shock absorber in order to further shorten braking distance particularly at the time of braking and to prevent spin at that time. In this case, it is necessary to furnish sensors to measure speed and angle directly. In the present invention, four radar sensors are used in order to directly measure the forward-reverse speed and the left-right speed. Also, the vertical speed, the pitch angle, the roll angle, and the angle of sideslip are indirectly measured from the output of the radar sensors. By using three or four radar sensors, six physical quantities&#x2014;the forward speed, the left-right direction speed, the vertical speed, the angle of sideslip, the pitch angle, and the roll angle&#x2014;can be measured. Also, by using two radar sensors, three physical quantities&#x2014;the forward speed, the left-right speed, and the angle of sideslip&#x2014;can be measured.

Vehicular travel control device

A millimeter-wave radar has a radome or radar cover including a layer, the dielectric constant of which is a greater than that of the other portion without the layer, or including a magnetic loss layer in an appropriate position with respect to the antenna. The dielectric constant of the radome or radar cover can be made higher in a portion corresponding to the side of the antenna than in a portion corresponding to the front of the antenna.

Millimeter wave-radar and method for manufacturing the same

A radar of the present invention has: (1) an antenna unit for transmitting a radio wave and receiving a reflected wave of the radio wave; (2)

Radar

There is provided a device in which surroundings of a building can be monitored using a sensor; when detecting an intruder, an object can be detected even in the case of bad weather; and a predetermined area can be monitored using as few sensors as possible. The device includes a security system which emits a radio wave from a building to a predetermined area outside the building to detect an object, and on the basis of output of the object detecting unit, a judgment is made as to whether or not the object will intrude into the predetermined area.

Security system

The present invention provides a radar device mounted on a moving object that moves along a continuous plane, having (1) a transceiver part for transmitting a signal having a main lobe in the direction of the movement of the moving object and a side lobe directed towards the continuous plane, that receives a first reflection signal from a target in the direction of the main lobe and a second reflection signal from the continuous plane in the direction of the side lobe, and (2) control processing means for detecting the frequency of a beat signal of the second reflection signal received by the transceiver part and the signal emitted by the transceiver part and for detecting information correlated to the attitude of the radar device with respect to the continuous plane based on that frequency. This enables detection of changes of mounting attitude for the moving object without requiring additional hardware.

The invention provides a radar that transmits a radio wave and receives an echo of the radio wave, which is characterized by possessing () a reception means that detects a beat signal of the echo and the radio wave, () a first frequency analysis means that analyzes the beat signal into frequency components, and detects a peak signal of frequency spectra obtained thereby, and () a second frequency analysis means that analyzes the beat signal into frequency components with a frequency resolution different from that of the first frequency analysis means, and detects a peak signal of frequency spectra obtained thereby.

Radar apparatus

In an automotive radio wave radar, a center frequency of a transmitted wave is shifted at a certain cycle, and position information of an obstacle detected at three or more center frequencies is subjected to decision by majority to determine whether detection results of the obstacle are erroneous with the occurrence of jamming. If any of the detection results is determined to be abnormal, the abnormal result is discarded. An automotive radio wave radar is realized which can correctly perform the obstacle detection even in the event of jamming without causing erroneous obstacle detection or omission of the detection.

Automotive radio wave radar and signal processing

In a cooling package for a construction machine, where a cooler () from among coolers () is disposed separately from an engine () and the separately provided cooler () includes a screen (), a lid () for covering the screen () from above is provided on an upper face of the construction machine independently of a side door (A,B) provided on a side face of the construction machine for covering the cooler () from forwardly and an engine hood () provided on the upper face of the construction machine for covering the engine () and the cooler () provided for the engine () from above so that, even when the location forwardly of the cooler () disposed separately from the engine () is occupied by some other apparatus, the screen () can be removed or mounted without being disturbed by the apparatus.

Cover structure for construction machine cooling package

Growing community of inventors

Mito, Japan

Kazuaki Takano