Methods and systems for improving infection control in a facility

Patent metadata

Field	Value
Publication number	US-11288945-B2
Application number	US-201916561709-A
Country	US
Kind code	B2
Filing date	Sep 5, 2019
Priority date	Sep 5, 2018
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

Methods and systems for monitoring procedural compliance of staff in a facility. A system may include a plurality of sensors positioned adjacent a hand washing station. Each of the plurality of sensors may be configured to provide a corresponding sensor output signal that is indicative of whether a person is washing their hands at the hand washing station or not. A controller may be configured to fuse the sensor output signals from each of two or more of the plurality of sensors and to determine using the fused sensor output signals whether the person has washed their hands at the hand washing station in compliance with one or more predetermined criteria or not. The controller may be further configured to output a notification when the controller has determined that the person has washed their hands at the hand washing station in compliance with the one or more predetermined criteria.

First claim

What is claimed is:

1. A system for monitoring hand-hygiene of staff in a facility, comprising:
a plurality of sensors positioned adjacent a hand washing station, wherein each of the plurality of sensors is free from imaging pixels that form a visually perceptible image of the hand washing station, each of the plurality of sensors is configured to provide a corresponding sensor output signal that is indicative of whether a person is washing their hands at the hand washing station or not, and at least two of the plurality of sensors are of a different sensor type; and
a controller configured to fuse the sensor output signals from each of two or more of the plurality of sensors, and to determine using the fused sensor output signals whether the person has performed a hand washing motion at the hand washing station in compliance with one or more predetermined criteria or not, the controller further configured to output a notification when the controller has determined that the person has washed their hands at the hand washing station in compliance with the one or more predetermined criteria.

2. The system of claim 1 , wherein the plurality of sensors comprise an accelerometer and/or a microphone.

3. The system of claim 1 , wherein the plurality of sensors comprise a plurality of thermal imaging sensors.

4. The system of claim 1 , wherein the plurality of sensors comprises one or more accelerometers and/or one or more microphones, and one or more of a light sensor, a radar sensor, a humidity sensor, a temperature sensor, a motion detector, and/or a magnetometer.

5. The system of claim 1 , wherein the plurality of sensors comprise an accelerometer and a microphone, and wherein the controller fuses the sensor output signals from the accelerometer and the microphone.

6. The system of claim 1 , wherein the one or more predetermined criteria comprise two or more distinct hand washing steps.

7. The system of claim 1 , wherein the plurality of sensors comprise a radar.

8. The system of claim 6 , wherein the two or more distinct hand washing steps comprise:
approaching the hand washing station;
dispensing of soap at the hand washing station;
hand scrubbing at the hand washing station;
dwelling at the hand washing station for a predetermined length of time; and
departing from the hand washing station.

9. The system of claim 1 , wherein the controller is further configured to identify and record an identity of the person washing their hands at the hand washing station, and whether the hand washing motion was in compliance with the one or more predetermined criteria.

10. The system of claim 9 , further comprises an RFID reader for reading an RFID tag carried by the person, wherein the controller is operatively connected to the RFID reader and is configured to identify the person washing their hands based on the RFID tag read by the RFID reader.

11. The system of claim 1 , wherein at least one sensor of the plurality of sensors is carried by the person and at least one sensor of the plurality of sensors is stationary.

12. A system for monitoring hand-hygiene of staff in a facility, comprising:
a plurality of sensors positioned adjacent a hand washing station including an accelerometer and a microphone, wherein each of the plurality of sensors is configured to provide a corresponding sensor output signal that is indicative of whether a person is washing their hands at the hand washing station or not; and
a controller configured to use the sensor output signals from both the accelerometer and the microphone to determine whether the person has performed a hand washing motion at the hand washing station in compliance with one or more predetermined criteria or not, the controller further configured to output a notification when the controller has determined that the person has washed their hands at the hand washing station in compliance with the one or more predetermined criteria.

13. The system of claim 12 , wherein the plurality of sensors further comprises one or more additional sensors, wherein the one or more additional sensors comprise one or more of a light sensor, a radar sensor, a humidity sensor, a temperature sensor, a motion detector, and/or a magnetometer, and wherein the controller is configured to use the sensor output signals from one or more of the additional sensors to determine whether the person has performed the hand washing motion at the hand washing station in compliance with the one or more predetermined criteria.

14. The system of claim 12 , wherein the controller is configured to fuse the sensor output signals from the accelerometer, the microphone and one or more of the additional sensors to determine whether the person has performed the hand washing motion at the hand washing station in compliance with the one or more predetermined criteria or not.

15. The system of claim 12 , wherein the one or more predetermined criteria comprise two or more distinct hand washing steps.

16. The system of claim 15 , wherein the two or more distinct hand washing steps comprise a hand scrubbing step and a dispensing of soap step.

17. A method for monitoring hand-hygiene of staff in a facility, the method comprising:
determining whether a person has washed their hands at a hand washing station in compliance with one or more predetermined criteria or not using two or more sensor outputs from two or more sensors positioned adjacent the hand washing station, wherein each of the two or more sensors is free from imaging pixels that form a visually perceptible image of the hand washing station, and at least two of the two or more sensors are of a different sensor type;
fusing two or more sensor outputs from the two or more sensors to increase a confidence level in the determination of whether the person has performed two or more distinct hand washing steps at the hand washing station in compliance with the one or more predetermined criteria or not;
wherein the two or more distinct hand washing steps include a dispensing of soap step and a hand scrubbing step; and
reporting whether the person has washed their hands at the hand washing station in compliance with the one or more predetermined criteria.

18. The method of claim 17 , wherein the two or more sensors comprise an accelerometer and/or a microphone, and one or more of a light sensor, a radar sensor, a humidity sensor, a temperature sensor, a motion detector, and/or a magnetometer.

19. The method of claim 17 , further comprising determining whether the hand scrubbing step lasted for at least a predetermined time period.

20. The method of claim 17 , further comprising determining whether the two or more distinct hand washing steps occurred in a predetermined order and/or whether one or more of the two or more distinct hand washing steps lasted for at least a predetermined time period.

Assignees

• Honeywell Int Inc

Inventors

• Kolavennu Soumitri
• Pai Ramdas
• Mahasenan Arun Vijayakumari
• Padmanabhan Aravind
• Nie Rongbao

Classifications

• G08B21/245 Primary

  Reminder of hygiene compliance policies, e.g. of washing hands · CPC title

• G08B29/188

  Data fusion; cooperative systems, e.g. voting among different detectors · CPC title

• G06V40/28

  Recognition of hand or arm movements, e.g. recognition of deaf sign language (static hand signs G06V40/113) · CPC title

• G08B21/0438

  Sensor means for detecting · CPC title

• G06K9/00355

  Physics · mapped topic