Energy Estimation Device, Information System for Automotive, and Server Device
First Claim
1. An energy estimation device comprising:
- an energy change quantity estimation unit that estimates an energy change quantity of a vehicle for each of links set in correspondence to predetermined road segments;
an axle torque calculation unit that calculates, based upon the energy change quantity estimated by the energy change quantity estimation unit, an axle torque of the vehicle for a regeneration link in which energy is regenerated upon traveling of the vehicle among the links;
an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of the vehicle for the regeneration link; and
a regeneration energy estimation unit that estimates regeneration energy of the vehicle for the regeneration link based upon the energy change quantity and the allocation ratio calculated by the allocation ratio calculation unit.
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Accused Products
Abstract
An energy estimation device includes: an energy change quantity estimation unit that estimates an energy change quantity of a vehicle for each of links; an axle torque calculation unit that calculates, based upon the estimated energy change quantity, an axle torque of the vehicle for a regeneration link in which energy is regenerated upon traveling of the vehicle; an allocation ratio calculation unit that calculates, based upon the calculated axle torque, an allocation ratio of a regeneration brake relative to a friction brake of the vehicle for the regeneration link; and a regeneration energy estimation unit that estimates regeneration energy of the vehicle for the regeneration link based upon the energy change quantity and the allocation ratio.
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Citations
6 Claims
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1. An energy estimation device comprising:
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an energy change quantity estimation unit that estimates an energy change quantity of a vehicle for each of links set in correspondence to predetermined road segments; an axle torque calculation unit that calculates, based upon the energy change quantity estimated by the energy change quantity estimation unit, an axle torque of the vehicle for a regeneration link in which energy is regenerated upon traveling of the vehicle among the links; an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of the vehicle for the regeneration link; and a regeneration energy estimation unit that estimates regeneration energy of the vehicle for the regeneration link based upon the energy change quantity and the allocation ratio calculated by the allocation ratio calculation unit. - View Dependent Claims (2)
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3. An information system for automotive, comprising a plurality of on-vehicle devices each installed in a vehicle and a server device connected with the on-vehicle devices via a communication network, wherein:
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each of the on-vehicle devices includes; an acceleration/deceleration change detection unit that detects a change in acceleration/deceleration of a vehicle in which the on-vehicle device is installed; and a transmission unit that transmits acceleration/deceleration information pertaining to the change in the acceleration/deceleration detected by the acceleration/deceleration change detection unit to the server device, and the server device includes; a reception unit that receives the acceleration/deceleration information transmitted from the plurality of on-vehicle devices; a segment specification unit that specifies, based upon the acceleration/deceleration information received by the reception unit, a loss segment in which energy is lost when each of the vehicles travels and a regeneration segment in which energy is regenerated when each of the vehicles travels; an axle torque calculation unit that calculates an axle torque of each of the vehicles for the regeneration segment; an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of each of the vehicles for the regeneration segment; a statistical parameter calculation unit that calculates, as statistical parameters for estimating consumption energy or regeneration energy for each of the links set in correspondence to predetermined road segments, a statistical loss parameter corresponding to the loss segment and a statistical regeneration parameter corresponding to the regeneration segment that contains a statistical value of the allocation ratio; and an energy estimation unit that estimates, based upon the statistical parameters for each of the links calculated by the statistical parameter calculation unit, consumption energy or regeneration energy of an estimation target vehicle for a road to be traveled. - View Dependent Claims (4)
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5. A server device comprising:
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a reception unit that receives acceleration/deceleration information pertaining to a change in acceleration/deceleration of each vehicle transmitted from a plurality of vehicles; a segment specification unit that specifies, based upon the acceleration/deceleration information received by the reception unit, a loss segment in which energy is lost when each of the vehicles travels and a regeneration segment in which energy is regenerated when each of the individual vehicles travels; an axle torque calculation unit that calculates an axle torque of each of the vehicles for the regeneration segment; an allocation ratio calculation unit that calculates, based upon the axle torque calculated by the axle torque calculation unit, an allocation ratio of a regeneration brake relative to a friction brake of each of the vehicles for the regeneration segment; a statistical parameter calculation unit that calculates, as statistical parameters for estimating consumption energy or regeneration energy for each of the links set in correspondence to predetermined road segments, a statistical loss parameter corresponding to the loss segment and a statistical regeneration parameter corresponding to the regeneration segment that contains a statistical value of the allocation ratio; and an energy estimation unit that estimates, based upon the statistical parameters for each of the links calculated by the statistical parameter calculation unit, consumption energy or regeneration energy of an estimation target vehicle for a road to be traveled. - View Dependent Claims (6)
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Specification