Back to results
US 12,056,653 B1Granted
Devices and methods for trip detection in an asset tracker
AssigneeGeotab Inc.
InventorsRobert Spencer Hockin, Farzan Farhangian, Yongkyun Shin
Life of this patent
Estimating the term…
Abstract
Devices and methods for detecting an end of trip by an asset tracker are described. An end of trip may be detected using a Global Navigation Satellite System (GNSS) module or an Inertial Measurement Unit (IMU), such as a three-axis accelerometer. In some implementations, the asset tracker uses the IMU for end of trip detection. In other implementations, the asset tracker uses the IMU for impact detection while using the GNSS module for end of trip detection.
Claims7
A method for trip detection by an asset tracker, the method comprising:
- operating the asset tracker in a shipping state;
- in response to an activation successful event, transitioning the asset tracker to a travel motion detection state;
- and
- in response to detecting travel motion, transitioning the asset tracker to a traveling state;
- in the traveling state:
- obtaining a second location of the asset tracker;
- and
- when a distance between the second location and the first location is greater than a travel distance threshold:
- when a trip has not already started:
- configuring a 3-axis accelerometer for impact detection, and reporting a start of trip event;
- wherein operating the asset tracker in the shipping state comprises:
- entering a sleep mode;
- configuring an inertial measurement unit to detect an activation trigger activity;
- and
- in response to detecting the activation trigger activity:
- obtaining a first location of the asset tracker;
- and
- generating the activation successful event.
15 more elements
A method for trip detection by an asset tracker, the method comprising:
- operating the asset tracker in a shipping state;
- in response to an activation successful event, transitioning the asset tracker to a travel motion detection state;
- and
- in response to detecting travel motion, transitioning the asset tracker to a traveling state;
- in the traveling state:
- obtaining a second location of the asset tracker;
- and
- when a distance between the second location and the first location is greater than a travel distance threshold:
- when a trip has not already started:
- configuring a 3-axis accelerometer for end of trip detection, and
- reporting a start of trip event;
- wherein operating the asset tracker in the shipping state comprises:
- entering a sleep mode;
- configuring an inertial measurement unit to detect an activation trigger activity;
- and
- in response to detecting the activation trigger activity:
- obtaining a first location of the asset tracker;
- and
- generating the activation successful event.
16 more elements
A method for trip detection by an asset tracker, the method comprising:
- operating the asset tracker in a shipping state;
- in response to an activation successful event, transitioning the asset tracker to a travel motion detection state;
- and
- in response to detecting travel motion, transitioning the asset tracker to a traveling state;
- in the traveling state:
- obtaining a second location of the asset tracker;
- and
- when a distance between the second location and the first location is greater than a travel distance threshold:
- when a trip has already started:
- transitioning to an end of trip state;
- reporting an end of trip event;
- and
- transitioning to the travel motion detection state subsequent to reporting the end of trip;
- wherein operating the asset tracker in the shipping state comprises:
- entering a sleep mode;
- configuring an inertial measurement unit to detect an activation trigger activity;
- and
- in response to detecting the activation trigger activity:
- obtaining a first location of the asset tracker;
- and
- generating the activation successful event.
18 more elements
A method for trip detection by an asset tracker, the method comprising:
- operating the asset tracker in a shipping state;
- in response to an activation successful event, transitioning the asset tracker to a travel motion detection state;
- and
- in response to detecting travel motion, transitioning the asset tracker to a traveling state;
- in the traveling state:
- obtaining a second location of the asset tracker;
- and
- when a distance between the second location and the first location is smaller than a travel distance threshold:
- when a trip has not already started:
- transitioning back to the travel motion detection state;
- wherein operating the asset tracker in the shipping state comprises:
- entering a sleep mode;
- configuring an inertial measurement unit to detect an activation trigger activity;
- and
- in response to detecting the activation trigger activity:
- obtaining a first location of the asset tracker;
- and
- generating the activation successful event.
15 more elements
A method for trip detection by an asset tracker, the method comprising:
- operating the asset tracker in a shipping state;
- in response to an activation successful event, transitioning the asset tracker to a travel motion detection state;
- and
- in response to detecting travel motion, transitioning the asset tracker to a traveling state;
- in the traveling state:
- obtaining a second location of the asset tracker;
- and
- when a distance between the second location and the first location is greater than a travel distance threshold:
- when a trip has not already started:
- configuring a 3-axis accelerometer for impact detection,
- configuring the 3-axis accelerometer for end of trip detection, and
- reporting a start of trip event
- wherein operating the asset tracker in the shipping state comprises:
- entering a sleep mode;
- configuring an inertial measurement unit to detect an activation trigger activity;
- and
- in response to detecting the activation trigger activity:
- obtaining a first location of the asset tracker, and
- generating the activation successful event.
16 more elements
Dependencies are inferred from the claim text.