Detecting presence based on wireless signal analysis
First Claim
Patent Images
1. A presence detection method comprising:
- detecting motion of an object in a space by analyzing a first set of signals for motion in the space, the first set of signals based on wireless signals transmitted through the space on a wireless communication link in a wireless communication network according to a wireless communication protocol between a first wireless communication device and a second wireless communication device in a first time period;
detecting lack of motion in the space by analyzing a second set of signals for motion in the space, the second set of signals based on wireless signals transmitted through the space on the wireless communication link in the wireless communication network according to the wireless communication protocol between the first wireless communication device and the second wireless communication device in a second, subsequent time period; and
detecting whether the object was present in the space during the second time period by analyzing the second set of signals for presence in the space.
1 Assignment
0 Petitions
Accused Products
Abstract
In a general aspect, a monitoring system detects presence of an object in a space, e.g., when no motion is detected. Motion of an object in a space is detected by analyzing a first set of signals based on wireless signals transmitted in a first time period. Lack of motion in the space is detected by analyzing a second set of signals based on wireless signals transmitted in a second, subsequent time period. Whether the object was present in the space during the second time period is detected by analyzing the second set of signals.
-
Citations
28 Claims
-
1. A presence detection method comprising:
-
detecting motion of an object in a space by analyzing a first set of signals for motion in the space, the first set of signals based on wireless signals transmitted through the space on a wireless communication link in a wireless communication network according to a wireless communication protocol between a first wireless communication device and a second wireless communication device in a first time period; detecting lack of motion in the space by analyzing a second set of signals for motion in the space, the second set of signals based on wireless signals transmitted through the space on the wireless communication link in the wireless communication network according to the wireless communication protocol between the first wireless communication device and the second wireless communication device in a second, subsequent time period; and detecting whether the object was present in the space during the second time period by analyzing the second set of signals for presence in the space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A computer-readable storage medium storing instructions that are operable when executed by a data processing apparatus to perform operations comprising:
-
detecting motion of an object in a space by analyzing a first set of signals for motion in the space, the first set of signals based on wireless signals transmitted through the space on a wireless communication link in a wireless communication network according to a wireless communication protocol between a first wireless communication device and a second wireless communication device in a first time period; detecting lack of motion in the space by analyzing a second set of signals for motion in the space, the second set of signals based on wireless signals transmitted through the space on the wireless communication link in the wireless communication network according to the wireless communication protocol between the first wireless communication device and the second wireless communication device in a second, subsequent time period; and detecting whether the object was present in the space during the second time period by analyzing the second set of signals for presence in the space. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A monitoring system comprising:
-
communication devices configured to transmit wireless signals through a space on wireless communication links in a wireless communication network according to a wireless communication protocol, the wireless communication devices comprising a first wireless communication device and a second wireless communication device; one or more processors; memory storing instructions, which when executed by the one or more processors, causes the monitoring system to; detect motion of an object in the space by analyzing a first set of signals for motion in the space, the first set of signals based on wireless signals transmitted through the space on a wireless communication link in the wireless communication network according to the wireless communication protocol between the first wireless communication device and the second wireless communication device in a first time period; detect lack of motion in the space by analyzing a second set of signals for motion in the space, the second set of signals based on wireless signals transmitted through the space on the wireless communication link in the wireless communication network according to the wireless communication protocol between the first wireless communication device and the second wireless communication device in a second, subsequent time period; and detect whether the object was present in the space during the second time period by analyzing the second set of signals for presence in the space. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
-
Specification