Micro-movement and gesture detection using radar

Patent metadata

Field	Value
Publication number	US-11918331-B2
Application number	US-202017102683-A
Country	US
Kind code	B2
Filing date	Nov 24, 2020
Priority date	Dec 10, 2019
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

A movement detection device includes a signal transmission device configured to transmit a radar signal transmission toward a target area and to receive reflected radar signals, and a signal analysis device configured to analyze the reflected radar signals to detect a movement in the target area that is indicative of micro-shivering. In response to detecting the micro-shivering, the movement detection device generates an alarm.

First claim

What is claimed is:

1. A method for mitigating micro-shivering, the method comprising:
transmitting a radar signal transmission toward a target area;
receiving reflected radar signals from the target area;
analyzing the reflected radar signals to detect a movement in the target area, the movement being indicative of micro-shivering;
generating an alarm to mitigate the detected micro-shivering;
receiving a temperature reading from a thermal sensor;
determining whether a change in the temperature reading occurs after the micro-shivering is detected; and
escalating the alarm based on the change in the temperature reading determined after the detection of the micro-shivering.

2. The method of claim 1 , wherein the alarm instructs a caregiver to mitigate the detected micro-shivering by administering one or more types of sedatives and neuromuscular blockers.

3. The method of claim 1 , wherein the alarm instructs a caregiver to mitigate the detected micro-shivering by raising an ambient temperature around the target area.

4. The method of claim 1 , wherein analyzing the reflected radar signals includes filtering a frequency range from 3 Hz to 20 Hz to detect the micro-shivering from the reflected radar signals.

Assignees

• Hill Rom Services Inc

Inventors

• Baker Steven D
• Bergstrom Jennifer
• Dalbert Heinz-Hermann
• Fisk Brandon P
• Fu Yongji
• Hood Michael S
• Lachenbruch Charles A
• Lane John A
• Mudge Kenzi L
• O'Neal Matthew
• Sauser Frank E
• Seim Douglas A
• Shannon Gregory J

Classifications

• A61B5/05 Primary

  Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves (measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24) · CPC title

• A61B5/01

  Measuring temperature of body parts {; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue} (clinical contact thermometers G01K13/20) · CPC title

• A61B5/02007

  Evaluating blood vessel condition, e.g. elasticity, compliance · CPC title

• A61B5/1101

  Detecting tremor · CPC title

• A61B5/1107 Primary

  Measuring contraction of parts of the body, e.g. organ or muscle · CPC title