Remote management system for work machinery
First Claim
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1. A remote management system, said remote management system comprising:
- a working machine; and
a base station, whereinthe working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device,the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit,the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit,the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device,the engine rpm control device is set such that information on the work mode instructed by the machine-side work mode instruction device is transmitted by the machine-side communication unit to the base station-side communication unit,the base station further comprises a work mode appropriateness determination device for determining, based on the information on the work mode of the engine rpm control device as received by the base station-side communication unit, whether or not the work mode instructed to the engine rpm control device is appropriate,the work mode appropriateness determination device determines whether or not the work mode of the engine rpm control device is a work mode having a higher upper limit in target rpm than the work mode instructed by the base station-side work mode instruction device and, when the work mode of the engine rpm control device is the work mode having the higher upper limit, determines that the work mode instructed to the engine rpm control device by the machine-side work mode instruction device is inappropriate, and the work mode management device is set such that, when the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device, andthe engine rpm control device further comprises a used fuel amount computing device configured to compute an amount of fuel used by the engine per unit time, and is set such that the information on the work mode instructed by the machine-side work mode instruction device and the information on the used amount of fuel as calculated by the used fuel amount computing device are transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a used fuel amount storage device in which lower limits of an amount of fuel to be used per unit time as set beforehand corresponding to respective ones of the plural kinds of work modes have been stored and a used fuel amount appropriateness determination device configured to determine whether or not the amount of the fuel used by the engine is appropriate, the used fuel amount appropriateness determination device determines whether or not the used amount of fuel as calculated by the used fuel amount computing device of the engine rpm control device is smaller than the lower limit of used fuel amount corresponding to the work mode of the engine rpm control device as stored in the used fuel amount storage device and, when the thus-calculated used fuel amount is smaller, determines the thus-calculated used fuel amount to be inappropriate, and the work mode management device is set such that, when the amount of fuel used by the engine is determined to be inappropriate by the used fuel amount appropriateness determination device and the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device.
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Abstract
A remote management system for at least one working machine manages an upper limit of an engine rpm. A hydraulic excavator includes a controller and an instruction switch for selectively instructing three kinds of work modes. The controller includes a target rpm storage unit, a target rpm computer for selecting one of stored upper limits of the target rpm according to an instruction by an instruction switch and computing a target rpm in a range smaller than the selected upper limit, and a communication unit. A server selects a work mode, according to an instruction by an input device, and instructs the selected work mode to the controller. When the work mode is instructed from the server, the target rpm computer computes a target rpm based on the instructed work mode.
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Citations
10 Claims
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1. A remote management system, said remote management system comprising:
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a working machine; and a base station, wherein the working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device, the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit, the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit, the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device, the engine rpm control device is set such that information on the work mode instructed by the machine-side work mode instruction device is transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a work mode appropriateness determination device for determining, based on the information on the work mode of the engine rpm control device as received by the base station-side communication unit, whether or not the work mode instructed to the engine rpm control device is appropriate, the work mode appropriateness determination device determines whether or not the work mode of the engine rpm control device is a work mode having a higher upper limit in target rpm than the work mode instructed by the base station-side work mode instruction device and, when the work mode of the engine rpm control device is the work mode having the higher upper limit, determines that the work mode instructed to the engine rpm control device by the machine-side work mode instruction device is inappropriate, and the work mode management device is set such that, when the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device, and the engine rpm control device further comprises a used fuel amount computing device configured to compute an amount of fuel used by the engine per unit time, and is set such that the information on the work mode instructed by the machine-side work mode instruction device and the information on the used amount of fuel as calculated by the used fuel amount computing device are transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a used fuel amount storage device in which lower limits of an amount of fuel to be used per unit time as set beforehand corresponding to respective ones of the plural kinds of work modes have been stored and a used fuel amount appropriateness determination device configured to determine whether or not the amount of the fuel used by the engine is appropriate, the used fuel amount appropriateness determination device determines whether or not the used amount of fuel as calculated by the used fuel amount computing device of the engine rpm control device is smaller than the lower limit of used fuel amount corresponding to the work mode of the engine rpm control device as stored in the used fuel amount storage device and, when the thus-calculated used fuel amount is smaller, determines the thus-calculated used fuel amount to be inappropriate, and the work mode management device is set such that, when the amount of fuel used by the engine is determined to be inappropriate by the used fuel amount appropriateness determination device and the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device. - View Dependent Claims (2)
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3. A remote management system, said remote management system comprising:
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a working machine; and a base station, wherein the working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device, the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit, the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit, the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device, the engine rpm control device is set such that information on the work mode instructed by the machine-side work mode instruction device is transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a work mode appropriateness determination device for determining, based on the information on the work mode of the engine rpm control device as received by the base station-side communication unit, whether or not the work mode instructed to the engine rpm control device is appropriate, the work mode appropriateness determination device determines whether or not the work mode of the engine rpm control device is a work mode having a higher upper limit in target rpm than the work mode instructed by the base station-side work mode instruction device and, when the work mode of the engine rpm control device is the work mode having the higher upper limit, determines that the work mode instructed to the engine rpm control device by the machine-side work mode instruction device is inappropriate, and the work mode management device is set such that, when the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device, and the working machine further comprises a load pressure detection device configured to detect a load pressure on the hydraulic pump and plural operational instruction detection device configured to detect operational instructions to respective ones of the plural hydraulic actuators, the target rpm computing device is set such that, based on the load pressure detected by the load pressure detection device and the operational instructions detected by the plural operational instruction detection device, a target rpm not greater than the upper limit of the target rpm as set corresponding to the work mode is calculated, the engine rpm control device is set such that the information on the work mode instructed by the machine-side work mode instruction device, the information on the load pressure and the information on the operational instructions are transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a work load storage device in which lower limits of a work load as set beforehand corresponding to respective ones of the plural kinds of work modes have been stored, a work load computing device configured to compute a work load based on the information on the work load and the operational instruction from the engine rpm control device, and a work load appropriateness determination device configured to determine whether or not the work load calculated by the work load computing device is appropriate, and the work load appropriateness determination-device determines whether or not the work load calculated by the work load computing device is smaller than the lower limit of work load as stored in the work load storage device and corresponding to the work mode of the engine rpm control device and, when the calculated work load is smaller, determines the calculated work load to be inappropriate, and the work mode management device is set such that, when the work load is determined to be inappropriate by the work load appropriateness determination device and the work mode of the engine rpm control device is determined to be inappropriate by the work load appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device. - View Dependent Claims (4)
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5. A remote management system, said remote management system comprising:
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a working machine; and a base station, wherein the working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device, the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit, the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit, the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device, the engine rpm control device is set such that information on the work mode instructed by the machine-side work mode instruction device is transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a work mode appropriateness determination device for determining, based on the information on the work mode of the engine rpm control device as received by the base station-side communication unit, whether or not the work mode instructed to the engine rpm control device is appropriate, the work mode appropriateness determination device determines whether or not the work mode of the engine rpm control device is a work mode having a higher upper limit in target rpm than the work mode instructed by the base station-side work mode instruction device and, when the work mode of the engine rpm control device is the work mode having the higher upper limit, determines that the work mode instructed to the engine rpm control device by the machine-side work mode instruction device is inappropriate, and the work mode management device is set such that, when the work mode of the engine rpm control device is determined to be inappropriate by the work mode appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device, and the working machine further comprises a load pressure detection device configured to detect a load pressure on the hydraulic pump and plural operational instruction detection device configured to detect operational instructions to respective ones of the plural hydraulic actuators, the target rpm computing device is set such that, based on the load pressure detected by the load pressure detection device and the operational instructions detected by the plural operational instruction detection device, a target rpm not greater than the upper limit of the target rpm as set corresponding to the work mode is calculated, the engine rpm control device comprises a used fuel amount computing device configured to compute an amount of fuel used by the engine per unit time, the engine rpm control device is set such that the information on the work mode instructed by the machine-side work mode instruction device, the information on the load pressure, the information on the operational instructions and the information on the used amount of fuel as calculated by the used fuel amount computing device are transmitted by the machine-side communication unit to the base station-side communication unit, the base station further comprises a used fuel amount storage device in which lower limits of an amount of fuel used per unit time as set beforehand corresponding to respective ones of the plural kinds of work modes have been stored, a used fuel amount appropriateness determination device configured to determine whether or not the amount of fuel used by the engine is appropriate, a work load storage device in which lower limits of a work load as set beforehand corresponding to respective ones of the plural kinds of work modes have been stored beforehand, a work load computing device configured to compute a work load based on the information on the work load and the operational instructions from the engine rpm control device, and a work load appropriateness determination device configured to determine whether or not the work load calculated by the work load computing device is appropriate, the used fuel amount appropriateness determination device determines whether or not the used amount of fuel as calculated by the used fuel amount computing device of the engine rpm control device is smaller than the lower limit of the used fuel amount as stored in the used fuel amount storage device and corresponding to the work mode of the engine rpm control device and, when the calculated used fuel amount is smaller, determines the calculated used fuel amount to be inappropriate, the work load appropriateness determination device determines whether or not the work load calculated by the work load computing device is smaller than the lower limit of work load as stored in the work load storage device and corresponding to the work mode of the engine rpm control device and, when the calculated work load is smaller, determines the calculated work load to be inappropriate, and the work mode management device is set such that, when the amount of fuel used by the engine is determined to be inappropriate by the used fuel amount appropriateness determination device, the work load is determined to be inappropriate by the work load appropriateness determination device and the work mode of the engine rpm control device is determined to be inappropriate by the work load appropriateness determination device, the work mode instructed by the base station-side work mode instruction device is instructed to the engine rpm control device. - View Dependent Claims (6)
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7. A remote management system, said remote management system comprising:
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a working machine; and a base station, wherein the working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device, the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit, the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit, the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device, a timing at which the engine rpm control device moves to the work mode instructed by the work mode management device of the base station is set to fall during a rest of the working machine, and the engine rpm control device further comprises an instructed mode storage device configured to store the work mode, which has been instructed from the work mode management device of the base station, upon shut-down of the engine rpm control device, and is set such that at a timing of a start-up of the engine rpm control device, the engine rpm control device moves to the work mode stored in the instructed mode storage device. - View Dependent Claims (8)
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9. A remote management system, said remote management system comprising:
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a working machine; and a base station, wherein the working machine comprises an engine as a drive source for a hydraulic pump that delivers pressure oil to be fed to plural hydraulic actuators, an engine rpm control device configured to control an rpm of the engine, and a machine-side work mode instruction device configured to selectively instruct plural kinds of work modes to the engine rpm control device, the engine rpm control device comprises a target rpm storage device in which upper limits of a target rpm for the engine as set corresponding to respective ones of the plural kinds of work modes have been stored, a target rpm computing device configured to select one of the upper limits of the target rpm, which have been stored in the target rpm storage device, according to the work mode instructed by the machine-side work mode instruction device and computing a target rpm not greater than the selected upper limit, and a machine-side communication unit, the base station comprises a work mode storage device in which the work modes of the working machine have been stored beforehand, a base station-side work mode instruction device configured to select a desired one of the work modes stored in the work mode storage device, a base station-side communication unit capable of communicating with the machine-side communication unit, and a work mode management device capable of instructing the work mode, which has been selected by the base station-side work mode instruction device, to the engine rpm control device via the base station-side communication unit, the target rpm computing device of the working machine is set such that, when the work mode is instructed to the engine rpm control device by the work mode management device of the base station, a target rpm is computed based on the work mode instructed by the work mode management device, a timing at which the engine rpm control device moves to the work mode instructed by the work mode management device of the base station is set to fall during a rest of the working machine, the working machine further comprises hydraulic pilot control valves arranged corresponding to respective ones of the plural hydraulic actuators to control directions and flow rates of flows of pressure oil to be fed to the corresponding hydraulic actuators, a gate lock valve capable of cutting off feeding of a pilot pressure to the hydraulic pilot control valves, and a gate lock detection device configured to detect whether a valve position of the gate lock valve is a closed position where the pilot pressure is cut off or an open position where the pilot pressure is communicated, and the engine rpm control device further comprises an instructed mode storage device configured to store the work mode instructed from the work mode management device when the gate lock detection device has detected a change in the valve position from the open position to the closed position, and is set such that, at a timing at which the gate lock detection device has detected a change in the valve position from the closed position to the open position, the engine rpm control device moves to the work mode stored in the instructed mode storage device. - View Dependent Claims (10)
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Specification
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Current AssigneeHitachi Construction Machinery Company Limited (Hitachi, Ltd.)
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Original AssigneeHitachi Construction Machinery Company Limited (Hitachi, Ltd.)
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InventorsGotou, Yuuki, Tsukada, Hidenobu, Shibamori, Kazuhiro
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Primary Examiner(s)Holwerda, Stephen
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Application NumberUS13/392,426Publication NumberTime in Patent Office1,818 DaysField of Search701/2, 701/29.1, 701/29.3, 701/33.4, 701/50, 700/65, 700/83, 340/870.01, 340/870.02, 340/870.03, 340/870.07, 340/870.42US Class Current1/1CPC Class CodesE02F 9/205 Remotely operated machines,...E02F 9/2054 Fleet managementE02F 9/2246 Control of prime movers, e....
