公开(公告)号：US20190215648A1

公开(公告)日：2019-07-11

申请号：US16306054

申请日：2017-05-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： WILHELMUS ANDREAS MARINUS ARNOLDUS MARIA VAN DEN DUNGEN ,  STEPHEN LEDINGHAM ,  TOMAS RUSS ,  WILHELMUS JOSEPHUS BOX

IPC: H04W4/021 ,  H04W24/10 ,  H04W4/02 ,  G01S5/02 ,  H04B17/318

CPC classification number: H04W4/021 ,  G01S5/00 ,  G01S5/02 ,  G01S5/0284 ,  G01S11/02 ,  G01S19/17 ,  H04B17/318 ,  H04W4/023 ,  H04W24/10

Abstract: A geo-fencing system (102) includes a base device (104) configured to create a virtual fence (108) around the base devise that bounds a safe zone (110). The geo-fencing system further includes a wearable device (106) initially located within the safe zone. The geo-fencing system further includes a processor configured to execute a dynamic adaptive control algorithm that computes at least one operating parameter for at least one of the base device and the wearable device based on a dynamic and adaptive combination of different signals indicative of distance measurements between the wearable device and the base device computed by the at least one of the base device and the wearable device. The processor conveys the at least one operating parameter to the at least one of the base device and the wearable device, which employs the at least one operating parameter for operation and determination of subsequent distance measurements.

公开(公告)号：US20180225954A1

公开(公告)日：2018-08-09

申请号：US15747965

申请日：2016-07-05

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： STEPHEN LEDINGHAM ,  WARNER RUDOLPH THEOPHILE TEN KATE ,  MICHAEL BELLOMO ,  ANDREA RYTER ,  TINE SMITS

IPC: G08B25/01

CPC classification number: G08B25/016 ,  G08B21/0286

Abstract: In a personal emergency response system (PERS), a personal help button (PHB) (10) includes a call button (12), a motion sensor (22), and a transmitter or transceiver (24) for transmitting a wireless call signal responsive to pressing the call button. An electronic processor (28) performs a compliance monitoring process (42) at successive compliance check times, each including: acquiring motion sensor data over a compliance data acquisition time interval; determining whether the PHB has moved since the last compliance check time; and assessing compliance based at least in part on the determination of whether the PHB has moved. The determining may include determining an orientation change of the PHB since the last check time. Alternatively, compliance may be monitored by detecting and logging wake-up interrupt events that cause the motion sensor to switch from a low-power mode to an operational mode.

公开(公告)号：US20160003931A1

公开(公告)日：2016-01-07

申请号：US14770307

申请日：2014-02-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： STEPHEN LEDINGHAM ,  KLAAS CORNELIS JAN WIJBRANS ,  PAVAN KOLAN REDDY

IPC: G01S3/38 ,  G01S5/06

CPC classification number: G01S3/38 ,  G01S5/06

Abstract: A system (10) and a method (150) track a tracking device (14). A radio frequency (RF) receiver (52) is configured to receive a periodic beacon signal originating at the tracking device (14). The periodic beacon signal is received with a directional antenna (36) at multiple bearings over time. An estimator (70) is configured to estimate a bearing to the tracking device (14) as the bearing of the multiple bearings in which a time of flight (ToF) of the periodic beacon signal is lowest. The RF receiver (52) can further be configured to simultaneously receive multiple instances of the periodic beacon signal with the directional antenna (36) at a bearing of the multiple bearings. In such instances, the RF receiver (52) is further configured to correlate the instances to identify which of the instances has a lowest ToF.

Abstract translation: 系统（10）和方法（150）跟踪跟踪装置（14）。 射频（RF）接收机（52）被配置为接收始发于跟踪设备（14）的周期性信标信号。 定时天线（36）在多个轴承随时间被接收周期性信标信号。 估计器（70）被配置为估计跟踪装置（14）的轴承，因为其中周期性信标信号的飞行时间（ToF）最低的多个轴承的轴承。 RF接收器（52）还可被配置为在多个轴承的轴承处与定向天线（36）同时接收周期性信标信号的多个实例。 在这种情况下，RF接收机（52）还被配置为使实例相关联，以识别哪些实例具有最低的ToF。