Fleet maintenance method and in-vehicle communication system
First Claim
1. A fleet maintenance method, for maintaining a fleet, wherein the fleet comprises a plurality of vehicles, the fleet maintenance method comprising:
- clustering the vehicles into a plurality of sub-fleets, and selecting one of the vehicles in each of the sub-fleets as a leader vehicle and the other vehicles as member vehicles;
obtaining a position coordinate and a speed of each the vehicle in each of the sub-fleets;
converting the position coordinates of the vehicles into a plurality of corresponding linear coordinates;
calculating a sub-fleet gravity center of each the sub-fleet, wherein the sub-fleet gravity center of the sub-fleet is calculated according to the corresponding linear coordinates of the vehicles in the sub-fleet;
calculating a fleet gravity center of the fleet according to the sub-fleet gravity centers of the sub-fleets; and
generating a suggested speed of each the leader vehicle according to a gravity center distance of the leader vehicle, wherein the gravity center distance of the leader vehicle is calculated according to a distance between the leader vehicle and the fleet gravity center.
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Abstract
A fleet maintenance method for generating a suggested speed for each vehicle in a fleet to maintain the vehicle in the fleet is provided. In the fleet maintenance method, vehicles are clustered into a plurality of sub-fleets, and in each sub-fleet, one vehicle is selected as a leader vehicle and the other vehicles are considered as member vehicles. Besides, a position coordinate and a speed of each vehicle in each sub-fleet are obtained, and the position coordinate is converted into a corresponding linear coordinate. In addition, a sub-fleet gravity center of each sub-fleet and a fleet gravity center of the entire fleet are calculated according to the linear coordinates. Moreover, a suggested speed of each leader vehicle is generated according to a gravity center distance of the leader vehicle, and a suggested speed of each member vehicle is generated.
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Citations
17 Claims
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1. A fleet maintenance method, for maintaining a fleet, wherein the fleet comprises a plurality of vehicles, the fleet maintenance method comprising:
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clustering the vehicles into a plurality of sub-fleets, and selecting one of the vehicles in each of the sub-fleets as a leader vehicle and the other vehicles as member vehicles; obtaining a position coordinate and a speed of each the vehicle in each of the sub-fleets; converting the position coordinates of the vehicles into a plurality of corresponding linear coordinates; calculating a sub-fleet gravity center of each the sub-fleet, wherein the sub-fleet gravity center of the sub-fleet is calculated according to the corresponding linear coordinates of the vehicles in the sub-fleet; calculating a fleet gravity center of the fleet according to the sub-fleet gravity centers of the sub-fleets; and generating a suggested speed of each the leader vehicle according to a gravity center distance of the leader vehicle, wherein the gravity center distance of the leader vehicle is calculated according to a distance between the leader vehicle and the fleet gravity center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An in-vehicle communication system, suitable for being configured in a vehicle and maintaining the vehicle in a fleet, the in-vehicle communication system comprising:
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a microprocessor unit; a sub-fleet clustering unit, coupled to the microprocessor unit, for clustering the vehicle into a sub-fleet and determining the vehicle as a leader vehicle or a member vehicle; a positioning unit, coupled to the microprocessor unit, for receiving a plurality of position information from a positioning system to determine a position coordinate of the vehicle; a speed detection unit, coupled to the microprocessor unit, for detecting a speed of the vehicle; a transceiver unit, coupled to the microprocessor unit, for receiving position coordinates and speeds of a plurality of other vehicles in the sub-fleet from the other vehicles; a linear coordinate conversion unit, coupled to the microprocessor unit, for converting the position coordinate of the vehicle and the position coordinates of the other vehicles into a plurality of corresponding linear coordinates; a gravity center calculation unit, coupled to the microprocessor unit, for calculating a sub-fleet gravity center of the sub-fleet according to the corresponding linear coordinates, wherein the gravity center calculation unit further calculates a fleet gravity center of the fleet according to sub-fleet gravity centers received by the transceiver unit from a plurality of other leader vehicles and the sub-fleet gravity center; and a suggested speed generation unit, coupled to the microprocessor unit, wherein when the sub-fleet clustering unit determines the vehicle as the leader vehicle, the suggested speed generation unit generates a suggested speed of the vehicle according to a gravity center distance between the fleet gravity center and the vehicle. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification