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公开(公告)号：US11975708B2
公开(公告)日：2024-05-07
申请号：US17735817
申请日：2022-05-03
Applicant: Ground Transportation Systems Canada Inc.
Inventor： Alon Green , Kevin Tobin , Marco De Thomasis , Andrei Bucsa
Abstract: Systems and methods of calibrating an Inertial Measurement Unit (IMU) on a vehicle are disclosed. In some embodiments, a first tilt angle of the IMU is measured with the IMU while the vehicle is stationary. A second tilt angle of the IMU is measured with an inclinometer or tilt sensor while the vehicle is stationary. The orientation of the IMU is corrected based on the first tilt angle and the second tilt angle.
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公开(公告)号：US11945480B2
公开(公告)日：2024-04-02
申请号：US17115348
申请日：2020-12-08
Applicant: Ground Transportation Systems Canada Inc.
Inventor： Alon Green , James Kevin Tobin , Marco De Thomasis
CPC classification number: B61L25/021 , B61L5/125 , B61L15/0027 , B61L15/02 , B61L25/023 , B61L25/025 , B61L25/026 , B61L2207/00
Abstract: A positioning and odometry system includes two or more vehicle beacons installed on an end of a vehicle and configured to communicate with one or more guideway beacons installed along a guideway. Processing circuitry is configured to communicate with the one or more vehicle beacons and perform at least one of: determine, before the processing circuitry enters a sleep state, a first vehicle position on the guideway; determine, after the processing circuitry wakes from the sleep state, a second vehicle position on the guideway; determine, after the processing circuitry wakes from the sleep state, any difference between the first vehicle position on the guideway and the second vehicle position on the guideway; determine a third vehicle position on the guideway using range measurements taken at configurable time intervals; and determine a vehicle speed where speed is measured as a change in the third vehicle position over time.
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