TRAJECTORY TRACKING USING LOW COST OCCUPANCY SENSOR

• US 20180288850A1
• Filed: 10/14/2016
• Published: 10/04/2018
• Est. Priority Date: 10/22/2015
• Status: Abandoned Application

• Current Assignee: Philips Lighting BV (Koninklijke Philips N.V.)
• Original Assignee: Philips Lighting BV (Koninklijke Philips N.V.)
• Inventors: KUMAR, ROHIT, PATEL, MAULIN DAHYABHAI
• Application Number:
  US15/770,108
• Publication Number:
  US 20180288850A1
• Time in Patent Office: Days
• CPC Class Codes: G01J 2005/106 Arrays
• CPC Class Codes: G01J 5/0022 for sensing the radiation of moving bodies
• CPC Class Codes: G01J 5/027 making use of sensor-related data, e.g. for identification of sensor parts or optical elements
• CPC Class Codes: G01J 5/10 using electric radiation detectors
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A system and method for tracking a trajectory of a target within a space. The system and method determining a current time instant, detecting a movement of at least one target in a space at the current time instant to generate a current sensor measurement, and determining a current state of the at least one target based on the current sensor measurement.

Claims

1. A method for tracking a trajectory of a target within a space, comprising:

receiving a space layout of the space including locations of a plurality of sensors in the space;

determining an initial state of the plurality of sensors at an initial time instant by detecting movement of at least one target in the space at the initial time instant based on initial sensor measurements of each of the plurality of sensors;

determining a current state of the plurality of sensors at a current time instant based on current sensor measurements of each of the plurality of sensors; and

tracking a trajectory of the at least one target in the space based on the initial state or a previous state and the current state of the plurality of sensors and the space layout.

3. The method of claim 1, further comprising:

analyzing a distance of travel of the at least one target between the current state and a previous state based on the sensor measurements.

4. The method of claim 1, further comprising:

generating a graphical representation of the space based on the space layout and legitimate paths of travel of a target through the space.

5. The method of claim 4, wherein the space layout includes one of walls, an entry point into the space, and obstructions in the space.

7. The method of claim 1, further comprising:

generating a lighting response based on the current state of each of the plurality of sensors, wherein the light response mitigates false negatives and positives using the legitimate paths of travel through the space.

2. (canceled)

6. (canceled)

8. A system for tracking a trajectory of a target within a space, comprising:

a plurality of sensors to detect movement in the space;

a processor configured to receive a space layout of the space including locations of the plurality of sensors in the space, determine an initial state of the plurality of sensors at an initial time instant by detecting movement of at least one target in the space at the initial time instant based on initial sensor measurements of each of the plurality of sensors, determine a current state of the plurality of sensors at a current time instant based on current sensor measurements based on current states of each of the plurality of sensors, and track a trajectory of the at least one target in the space based on the initial state or a previous state and the current state of each of the plurality of sensors and the space layout.

10. The system of claim 8, wherein the processor analyzes a distance of travel of the at least one target between the current state and a previous state based on the sensor measurements.

11. The system of claim 8, wherein the processor generates a graphical representation of the space based on the space layout and legitimate paths of travel through the space, wherein the space layout includes one of walls, an entry point into the space, obstructions in the space and a location of a plurality of sensors in the space.

13. The system of claim 8, wherein the processor generates a lighting response based on the current state each of the plurality of sensors, the lighting response mitigating false negatives and positives using the legitimate paths of travel through the space.

14. The system of claim 8, wherein the lighting response includes one of turning off, turning on and dimming the lights in the space.

9. (canceled)

12. (canceled)

15. A non-transitory computer-readable storage medium including a set of instructions executable by a processor, the set of instructions, when executed by the processor, causing the processor to perform operations, comprising:

receiving a space layout of the space including locations of a plurality of sensors in the space;

an initial state of the plurality of sensors at an initial time instant by

detecting a movement of at least one target in the space at the initial time instant based on initial sensor measurements of each of the plurality of sensors;

determining a current state of the plurality of sensors at a current time instant based on the current sensor measurements of each of the plurality of sensors; and

tracking a trajectory of the at least one target in the space based on the initial state or a previous state and the current state of the plurality of sensors and the space layout.