Back to results
US 12,222,363 B2Granted
Device for low-power acceleration detection in a telematics device
AssigneeGeotab Inc.
InventorsRobert Spencer Hockin, Paul Philip Ciolek, Xiaohui Yu
Life of this patent
Estimating the term…
Abstract
A method and a system for impact detection in a stationary vehicle are provided. The method includes putting a telematics device into a sleep mode and performing a first micro wakeup. In response to determining that a first value read from a sensor during the micro wakeup is greater than a noise threshold, increasing a frequency of the micro wakeups and a sampling rate of the sensor. The method also includes reading a second value from the sensor during a second wakeup, performing a regular wakeup, and sending the first and second values during the regular wakeup.
Claims9
A telematics device, comprising:
- a controller;
- a sensor coupled to the controller;
- a network interface coupled to the controller;
- and
- a memory coupled to the controller, the memory storing machine-executable programming instructions which, when executed by the controller, configure the telematics device to:
- enter into a sleep mode;
- perform a micro wakeup of a plurality of micro wakeups during which the telematics device powers up a limited number of peripherals;
- read a first value from a sensor during the micro wakeup;
- in response to determining that the first value is above a noise threshold:
- extend a duration of the micro wakeup,
- read a second value from the sensor during the micro wakeup;
- performing a regular wakeup after the micro wakeup;
- and
- send the first value and second value over a network interface to a telematics server during the regular wakeup.
11 more elements
Dependencies are inferred from the claim text.