Peak efficiency recommendation and sharing
First Claim
1. A system for determining an efficient driving speed of a vehicle, comprising:
- a power source configured to generate power to accelerate the vehicle;
a speed sensor configured to detect a current speed of the vehicle;
a camera configured to detect image data corresponding to a current roadway;
a global positioning system (GPS) sensor configured to detect location data corresponding to a current location of the vehicle;
a memory configured to store a lookup table that maps efficient vehicle speeds to a plurality of roadway speed limits;
an output device configured to output data; and
an electronic control unit (ECU) coupled to the speed sensor, the camera, the GPS sensor, the memory, and the output device and configured to;
determine a current speed limit of the current roadway based on at least one of the image data or the location data,determine that the vehicle is within a steady speed range when the current speed of the vehicle fluctuates less than a predetermined speed threshold over a predetermined time period,compare the current speed limit to the lookup table to determine at least one efficient vehicle speed that corresponds to the current speed limit,calculate an efficiency differential of the power source corresponding to a difference between a current efficiency of the power source at the current speed of the vehicle and a potential efficiency of the power source at the at least one efficient vehicle speed, andcontrol the output device to output the at least one efficient vehicle speed when the vehicle is within the steady speed range and to further output the efficiency differential with the at least one efficient vehicle speed.
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Accused Products
Abstract
A system includes a speed sensor to detect a current speed, a camera to detect image data, and a GPS sensor to detect location data. The system also includes a memory to store a lookup table that maps efficient vehicle speeds to roadway speed limits. The system also includes an output device and an electronic control unit (ECU). The ECU determines a current speed limit of the current roadway and determines that the vehicle is within a steady speed range when the current speed of the vehicle fluctuates less than a predetermined speed threshold over a predetermined time period. The ECU also compares the current speed limit to the lookup table to determine at least one efficient vehicle speed that corresponds to the current speed limit and controls the output device to output the at least one efficient vehicle speed when the vehicle is within the steady speed range.
25 Citations
17 Claims
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1. A system for determining an efficient driving speed of a vehicle, comprising:
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a power source configured to generate power to accelerate the vehicle; a speed sensor configured to detect a current speed of the vehicle; a camera configured to detect image data corresponding to a current roadway; a global positioning system (GPS) sensor configured to detect location data corresponding to a current location of the vehicle; a memory configured to store a lookup table that maps efficient vehicle speeds to a plurality of roadway speed limits; an output device configured to output data; and an electronic control unit (ECU) coupled to the speed sensor, the camera, the GPS sensor, the memory, and the output device and configured to; determine a current speed limit of the current roadway based on at least one of the image data or the location data, determine that the vehicle is within a steady speed range when the current speed of the vehicle fluctuates less than a predetermined speed threshold over a predetermined time period, compare the current speed limit to the lookup table to determine at least one efficient vehicle speed that corresponds to the current speed limit, calculate an efficiency differential of the power source corresponding to a difference between a current efficiency of the power source at the current speed of the vehicle and a potential efficiency of the power source at the at least one efficient vehicle speed, and control the output device to output the at least one efficient vehicle speed when the vehicle is within the steady speed range and to further output the efficiency differential with the at least one efficient vehicle speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for determining an efficient driving speed of a vehicle, comprising:
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a power source configured to generate power to accelerate the vehicle; a camera configured to detect image data corresponding to a current roadway; at least one of a grade sensor configured to detect a current grade of the current roadway or a network access device configured to receive the current grade of the current roadway; a global positioning system (GPS) sensor configured to detect location data corresponding to a current location of the vehicle; a memory configured to store a lookup table that maps efficient vehicle speeds to a plurality of roadway speed limits and a plurality of roadway grades; an output device configured to output data; and an electronic control unit (ECU) coupled to the camera, the at least one of the grade sensor or the network access device, the GPS sensor, the memory, and the output device and configured to; determine a current speed limit of the current roadway based on at least one of the image data or the location data, compare the current speed limit and the current grade of the current roadway to the lookup table to determine at least one efficient vehicle speed that corresponds to the current speed limit and the current grade, calculate an efficiency differential of the power source corresponding to a difference between a current efficiency of the power source at the current speed of the vehicle and a potential efficiency of the power source at the at least one efficient vehicle speed, and control the output device to output the at least one efficient vehicle speed and the efficiency differential along with the at least one efficient vehicle speed. - View Dependent Claims (11, 12, 13)
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14. A method for determining an efficient driving speed of a vehicle, comprising:
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generating, by a power source, power to accelerate the vehicle; detecting, by a speed sensor, a current speed of the vehicle; detecting, by a camera, image data corresponding to a current roadway; detecting, by a global positioning system (GPS) sensor, location data corresponding to a current location of the vehicle; storing, in a memory, a lookup table that maps efficient vehicle speeds to a plurality of roadway speed limits; determining, by an electronic control unit (ECU), a current speed limit of the current roadway based on at least one of the image data or the location data; determining, by the ECU, that the vehicle is within a steady speed range when the current speed of the vehicle fluctuates less than a predetermined speed threshold over a predetermined time period; comparing, by the ECU, the current speed limit to the lookup table to determine at least one efficient vehicle speed that corresponds to the current speed limit; calculating, by the ECU, an efficiency differential of the power source corresponding to a difference between a current efficiency of the power source at the current speed of the vehicle and a potential efficiency of the power source at the at least one efficient vehicle speed; and controlling by the ECU, an output device to output the at least one efficient vehicle speed when the vehicle is within the steady speed range and to output the efficiency differential along with the at least one efficient vehicle speed. - View Dependent Claims (15, 16, 17)
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Specification