Vehicle guidance system
First Claim
1. A vehicle guidance system for directing a vehicle having a steering system along a plurality of predetermined paths, the system comprising:
- an elevated structure which extends along the plurality of predetermined paths;
a reference surface provided on the elevated structure and extending along the plurality of predetermined paths;
an on-board vehicle controller comprising a memory for storing the plurality of predetermined paths; and
a sensor which is adapted to measure the distance, laterally of the vehicle travel direction, between the sensor and the reference surface, the controller being adapted to control the steering system of the vehicle to correct any lateral deviation of the vehicle from a chosen predetermined path selected from the plurality of predetermined paths stored in the memory in response to an output from the sensor.
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Accused Products
Abstract
A vehicle guidance system for directing a vehicle along a predetermined path comprises an onboard computer, a number of distance sensors and a steering system controllable by the computer. The predetermined path is stored in a memory of the computer and, in operation, the steering system is controlled to follow the predetermined path. The sensors are adapted to measure the distance, laterally of the vehicle travel direction, between the sensors and curbs provided along the predetermined path, and the computer is adapted to control the steering system to correct any lateral deviation from the predetermined path as detected by the sensors.
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Citations
15 Claims
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1. A vehicle guidance system for directing a vehicle having a steering system along a plurality of predetermined paths, the system comprising:
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an elevated structure which extends along the plurality of predetermined paths; a reference surface provided on the elevated structure and extending along the plurality of predetermined paths; an on-board vehicle controller comprising a memory for storing the plurality of predetermined paths; and a sensor which is adapted to measure the distance, laterally of the vehicle travel direction, between the sensor and the reference surface, the controller being adapted to control the steering system of the vehicle to correct any lateral deviation of the vehicle from a chosen predetermined path selected from the plurality of predetermined paths stored in the memory in response to an output from the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A personal rapid transport system comprising:
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a trackway comprising a plurality of predetermined paths; elevated structures extending along each side of the trackway; a vehicle for travelling along the trackway, the vehicle having a steering system; reference surfaces provided on the elevated structures and extending along the plurality of predetermined paths; an on-board vehicle controller comprising a memory for storing the plurality of predetermined paths; and a sensor which is adapted to measure the distance, laterally of the vehicle travel direction, between the sensor and the reference surface, the controller being adapted to control the steering system of the vehicle to correct any lateral deviation of the vehicle from a chosen predetermined path selected from the plurality of predetermined paths stored in the memory in response to an output from the sensor.
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11. A vehicle comprising:
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a steering system; an on-board vehicle controller comprising a memory for storing a plurality of predetermined paths; and a sensor which is adapted to measure the distance, laterally of the vehicle travel direction, between the sensor and a reference surface provided on an elevated structure and extending along the predetermined path, wherein the controller is adapted to control the steering system of the vehicle to correct any lateral deviation of the vehicle from a chosen predetermined path selected from the plurality of predetermined paths stored in the memory in response to an output from the sensor. - View Dependent Claims (12)
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13. A method of guiding a vehicle along a predetermined path along which extends an elevated structure having a reference surface, comprising the steps of:
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(a) selecting one of a plurality of predetermined paths stored in a memory of an on-board vehicle controller of the vehicle; (b) sensing a distance laterally of the vehicle between the vehicle and the reference surface, (c) comparing the sensed distance with a stored distance value, and (d) controlling a steering system of the vehicle to correct any lateral deviation of the vehicle from the chosen predetermined path in response to an output from the sensor. - View Dependent Claims (14, 15)
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Specification