Hitachi Construction Machinery Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Akira Kanazawa

Shinya Imura

Hidekazu Moriki

Takaaki Chiba

Shiho Izumi

Hiroyuki Yamada

Yasutaka Tsuruga

Toshiharu Saito

Noriyuki Murata

Akira Nakatsuka

Harumi Aoki

Hiroaki Sato

Ryu Narikawa

Mariko Mizuochi

Hironori Kikuchi

Shingo Sumi

Yu Ono

Shinjirou Yamamoto

Kouji Shiwaku

Hiroaki Ohmori

Katsuhiko Morioka

Masayuki Obata

An automated operation controllerof an automated work systemincludes: a work status management sectionthat selects a work content according to a work DBthat records a work plan for a hydraulic excavatorand a work order in the work plan, creates an operation plan based on the selected work content and information on the surrounding environment measured by laser scanners, and outputs a control signal to a vehicle body controllerbased on the operation plan; and an abnormal object detection sectionthat detects an abnormal object present on a work site based on the information on the surrounding environment measured by the laser scanners. When the execution of the operation plan is determined to be hindered by the presence of the abnormal object, the work status management sectionselects another work content from the work plan.

Automated work system

To provide a work machine that enables enhancement of shaping accuracy near a boundary line between two adjacent target surfaces. A controllerextracts, from among a plurality of target surfaces, a second target surface Sthat is a target surface adjacent to a first target surface S, calculates a boundary line Lbetween the first target surface Sand the second target surface S, and, prior to a work toolpassing the first boundary line L, corrects a control signal for a posture control actuatorsuch that the angular difference Ebetween a reference line Lset on the work tooland the boundary line Lbecomes small.

Work machine

The present invention intends to provide a risk management system that can accurately extract information necessary for analysis of a variety of accidents in which a machine is involved. For this purpose, a controller calculates a main risk that is the degree at which a main factor of an accident contributes to the occurrence of the accident on the basis of an evaluation value of the main factor, and calculates a subsidiary risk that is the degree at which a subsidiary factor of the accident contributes to the occurrence of the accident on the basis of an evaluation value of the subsidiary factor. Furthermore, the controller calculates, as the occurrence risk of the accident, an integrated risk that has a value equal to or larger than the main risk and increases or decreases at a degree lower than the degree of increase or decrease in the subsidiary risk, and, when the integrated risk has exceeded a predetermined threshold, causes a recording device to record parameters measured by measuring devices in a certain time period including a clock time at which the integrated risk has exceeded the predetermined threshold.

Risk management system

A construction management device computes a risk indicative of a degree of danger with which an accident occurs on the basis of information relating at least to a position of a worker measured by a worker position measuring device and a worker biometrical information measuring device, information relating at least to a position of a hydraulic excavator measured by a machine body position measuring device, a machine body posture measuring device, a machine front implement posture measuring device, and a machine operator biometrical information measuring device, personal information on a worker and an operator registered in a worker information registration device, and information on a construction environment from an environment information registration device, and outputs the computed risk as a coordinate risk associated with coordinates of the construction environment to a risk display device such that the computed risk is displayed in a map format on the risk display device.

Construction management system and work machine

A construction machine is provided that can cause each hydraulic actuator to accurately operate according to operation by an operator in combined operation in which a hydraulic fluid of a hydraulic pump is subjected to flow dividing and is supplied to plural hydraulic actuators. A controller, in a case of determining that combined operation is being carried out, controls a regulatorin such a manner that the delivery flow rate of a hydraulic pumpbecomes larger than the total target flow rate of plural hydraulic actuators, and, and controls the respective opening amounts of plural directional control valves, andin such a manner that the difference between the respective target flow rates of the plural hydraulic actuators and the respective inflow flow rates of the plural hydraulic actuators sensed by velocity sensorstobecomes small.

Construction machine

A construction machine that precisely enables derivation of the operation characteristics of hydraulic actuators in a high-velocity area with less calibration operation is provided. A controller () has a calibration mode in which the controller () derives operation characteristics (&#x3b1;(xs)) representing a relation among a spool position (xs) of a meter-in valve (), an operation velocity (Va) of a hydraulic actuator (), and a differential pressure (&#x394;P) across the meter-in valve (), and is configured to, in a case where the spool position (xs) of the meter-in valve () has changed in a direction to increase the opening area of the meter-in valve () in the calibration mode, output a command signal to increase the opening area of a bleed-off valve () to a bleed-off solenoid proportional pressure-reducing valve () as a command signal to reduce the differential pressure (&#x394;P).

To provide a construction machine that can highly precisely control branch flows from a hydraulic pump to a plurality of hydraulic actuators without being affected by load conditions. A controller () has a meter-out valve control section () configured to calculate a target opening area of a second meter-out valve () () according to a pressure difference between a supply pressure and a second meter-in pressure, or calculate a target opening area of a first meter-out valve () () according to a pressure difference between the supply pressure and the first meter-in pressure.

An antenna includes a dielectric substrate, a ground element, a feed element, a microstrip line, and a feed point. The ground element is disposed on a first surface of the dielectric substrate. The ground element includes a slit. The feed element is disposed on a second surface of the dielectric substrate. The microstrip line extends from the feed element toward the slit. The feed point is disposed on the second surface of the dielectric substrate, and connected to the feed element via the microstrip line. The feed point is positioned between the feed element and the slit, and disposed at an end of the microstrip line.

Antenna

An ignition coil device, which is mounted in a plug hole of an internal combustion engine, comprises a primary coil wound to have larger diameter, a secondary coil wound on a bobbin A and disposed inside the primary coil an iron core disposed inside the bobbin A, and a shielding case disposed around the primary coil a gap between the primary coil and the secondary coil being filled with an insulating resin The primary coil is made bobbinless so as to secure and increase the withstand voltages of the primary coil and the secondary coil.

Ignition device for internal combustion engine

An ignition coil device, which is mounted in a plug hole of an internal combustion engine, comprises a primary coil,wound to have a first diameter, a secondary coil,wound on a bobbin,A and disposed inside the primary coil,, an iron core,disposed inside the bobbin,A, and a shielding case,disposed around the primary coil,, a gap between the primary coil,and the secondary coil,being filled with an insulating resin,. The primary coil,is made bobbinless so as to secure and increase the withstand voltages of the primary coil and the secondary coil.

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Tokyo, Japan

Akira Kanazawa