公开(公告)号：US20210153128A1

公开(公告)日：2021-05-20

申请号：US17158733

申请日：2021-01-26

Applicant: Analog Devices Global

Inventor： Philip P.E. Quinlan ,  Paul Lambkin

IPC: H04W52/02 ,  G08C17/02 ,  H04Q9/00

Abstract: A wireless sensor node is described. The wireless sensor node may include a wake-up circuitry configured to awaken the sensor when a request is received. The sensor may be placed in a sleep mode, thus saving battery usage until a wake-up signal requesting use of the sensor is received. Powering of the wake-up circuitry may be supplied through energy captured using an energy harvester. In one example, the energy for powering the wake-up circuitry is extracted from the same signal used for awakening the sensor. The wireless sensor mode may operate in a passive mode, in which the energy for powering the wake-up circuitry is harvested, or in a power supply-assisted mode, in which some of the power is provided by a power supply. High quality factors filters may be used to increase the signal-to-noise ratio of the wake-up signals, thus improving the node's ability to recognize activation requests.

公开(公告)号：US20180139698A1

公开(公告)日：2018-05-17

申请号：US15809520

申请日：2017-11-10

Applicant: Analog Devices Global

Inventor： Philip P.E. Quinlan ,  Paul Lambkin

IPC: H04W52/02

CPC classification number: H04W52/0235 ,  G08C17/02 ,  H04Q9/00 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/26

Abstract: A wireless sensor node is described. The wireless sensor node may include a wake-up circuitry configured to awaken the sensor when a request is received. The sensor may be placed in a sleep mode, thus saving battery usage until a wake-up signal requesting use of the sensor is received. Powering of the wake-up circuitry may be supplied through energy captured using an energy harvester. In one example, the energy for powering the wake-up circuitry is extracted from the same signal used for awakening the sensor. The wireless sensor mode may operate in a passive mode, in which the energy for powering the wake-up circuitry is harvested, or in a power supply-assisted mode, in which some of the power is provided by a power supply. High quality factors filters may be used to increase the signal-to-noise ratio of the wake-up signals, thus improving the node's ability to recognize activation requests.

公开(公告)号：US20170264422A1

公开(公告)日：2017-09-14

申请号：US15605082

申请日：2017-05-25

Applicant: Analog Devices Global

Inventor： Muhammad Kalimuddin Khan ,  Kenneth J. Mulvaney ,  Philip P.E. Quinlan ,  Shane O'Mahony

IPC: H04L7/00 ,  H04L7/033

CPC classification number: H04L7/0008 ,  H04L7/033 ,  H04L7/0331 ,  H04L7/046

Abstract: An apparatus comprising: a signal detection circuit determine a count reached by a counter between successive detected edge signals and to provide an indication of whether successive detected edge signals are separated from each other by at least a prescribed time interval; a clock circuit that produces clock signal pulses in response to a provided indication of an occurrence of a succession of detected edge signals each separated from a previous edge signal of the succession by at least the prescribed time interval; phase matching circuitry configured to align the produced clock signal pulses with detected edge signals; and a pattern matching circuit that that samples a sequence of detected edge signals aligned with the produced clock signal pulses to detect a data packet.