Method and system for moving status detection for a sensor apparatus

Patent metadata

Field	Value
Publication number	US-12096166-B2
Application number	US-202318181957-A
Country	US
Kind code	B2
Filing date	Mar 10, 2023
Priority date	Apr 10, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A method at a sensor apparatus, the method including calculating a value for a target function based on at least one sensor of the sensor apparatus; determining that the value of the target function is within a defined threshold range for a defined time period, thereby finding an in-flight state for the sensor apparatus; and turning off transmission from a radio of the sensor apparatus based on the in-flight state.

First claim

The invention claimed is:

1. A method at a sensor apparatus, the method comprising:
when the sensor apparatus is in a flying state:
calculating a value for a target function based on at least one sensor of the sensor apparatus;

when the value for the target function is greater than a first threshold, staying in the flying state;
when the value for the target function is less than a first threshold, changing the state to the stopped state, and turning on a radio of the sensor apparatus;
wherein the at least one sensor comprises an accelerometer for each of the x, y, and z orientation, and the target function is a sum of the moving variance for each of the x, y, and z accelerometers, each of the moving variances being weighted with a distinct, non-zero weight.

2. The method of claim 1 , further comprising, when the value for the target function is greater than the first threshold, setting a next sampling time based on a predetermined delay; and repeating the method at the next sampling time.

3. The method of claim 1 , wherein each moving variance is calculated using a first order infinite impulse response filter.

4. The method of claim 1 , wherein turning on the radio of the sensor apparatus is performed when the value for the target function stays below the first threshold for a predetermined duration.

5. A sensor apparatus comprising:
a processor; and
a communications subsystem,

wherein the sensor apparatus is configured to:
when the sensor apparatus is in a flying state:
calculate a value for a target function based on at least one sensor of the sensor apparatus;

when the value for the target function is greater than a first threshold, stay in the flying state;
when the value for the target function is less than a first threshold, change the state to the stopped state, and turn on a radio of the sensor apparatus;
wherein the at least one sensor comprises an accelerometer for each of the x, y, and z orientation, and the target function is a sum of the moving variance for each of the x, y, and z accelerometers, each of the moving variances being weighted with a distinct, non-zero weight.

6. The sensor apparatus of claim 5 , further configured to, when the value for the target function is greater than the first threshold, set a next sampling time based on a predetermined delay; and repeat the method at the next sampling time.

7. The sensor apparatus of claim 5 , wherein each moving variance is calculated using a first order infinite impulse response filter.

8. The sensor apparatus of claim 5 , further configured to turn on the radio of the sensor apparatus when the value for the target function stays below the first threshold for a predetermined duration.

9. A non-transitory computer-readable medium having stored thereon executable code for execution by a processor of a sensor apparatus, the executable code comprising instructions for:
when the sensor apparatus is in a flying state:
calculating a value for a target function based on at least one sensor of the sensor apparatus;

when the value for the target function is greater than a first threshold, staying in the flying state;
when the value for the target function is less than a first threshold, changing the state to the stopped state, and turning on a radio of the sensor apparatus;
wherein the at least one sensor comprises an accelerometer for each of the x, y, and z orientation, and the target function is a sum of the moving variance for each of the x, y, and z accelerometers, each of the moving variances being weighted with a distinct, non-zero weight.

10. The non-transitory computer-readable medium of claim 9 , the executable code comprising further instructions for:
when the value for the target function is greater than the first threshold, setting a next sampling time based on a predetermined delay; and repeating the method at the next sampling time.

11. The non-transitory computer-readable medium of claim 9 , wherein each moving variance is calculated using a first order infinite impulse response filter.

Assignees

• Blackberry Ltd

Inventors

• Cai Zhijun
• Qu Shouxing
• Gao Yu
• Martin-Cocher Gaëlle Christine
• Bennett Jesse William

Classifications

• G01P1/06

  Indicating or recording devices, e.g. for remote indication (indicating or recording in general G01D; registering or indicating working conditions of vehicles G07C5/00) · CPC title

• H04Q2209/883

  where the sensing device enters an active or inactive mode · CPC title

• H04Q2209/40

  using a wireless architecture · CPC title

• G06Q10/0833 Primary

  Tracking · CPC title

• G01P15/14

  by making use of gyroscopes (gyroscopes per se G01C19/00) · CPC title