System and method for disinfecting an occupied environment using direction controlled germicidal radiation

• US 10,639,390 B2
• Filed: 02/24/2017
• Issued: 05/05/2020
• Est. Priority Date: 02/25/2016
• Status: Active Grant

• Current Assignee: Lloyd Technologies Incorporated
• Original Assignee: Ralph Birchard Lloyd
• Inventors: Lloyd, Ralph Birchard
• Primary Examiner(s): Yoo, Regina M
• Application Number:
  US15/442,340
• Publication Number:
  US 20170246329A1
• Time in Patent Office: 1,166 Days
• CPC Class Codes: A61L 2/084 Visible light
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/25 Rooms in buildings, passenger compartments
• CPC Class Codes: A61Q 17/04 Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Abstract

A system and method of disinfecting an area using germicidal radiation. The system is configured to capture images of an environment, analyze the images to determine locations of a person or unprotected skin of a person in the environment, and control one or more germicidal radiation emitters to decontaminate the environment where the person or exposed skin of persons in the environment are not located. The system and method allow for safe decontamination of an environment using hazardous levels of germicidal radiation while occupied by a person who may not be fully protected from the radiation.

Claims

1. A system for disinfecting an environment, the system comprising:

an imaging system configured to capture an image of an environment;

a germicidal radiation emitter that emits germicidal radiation into the environment; and

processing circuitry configured to;

analyze the image of the environment and determine an area within the environment either where a person is located or where exposed skin of the person in the environment is located;

adjust at least one of a shape of a beam that is emitted by the emitter, an intensity of the germicidal radiation, and a direction of the germicidal radiation to prevent the germicidal radiation from being emitted into the environment in the area where the person is located or where the exposed skin is located,

wherein the processing circuitry is further configured to track movement of the person in the environment.

2. The system of claim 1, wherein the processing circuitry is further configured to detect whether the person in the environment is wearing eye protection and to prevent the germicidal radiation emitter from emitting the germicidal radiation onto the person or onto a head of the person when the person is not wearing the eye protection.

3. The system of claim 1, wherein the processing circuitry is further configured to detect whether the person in the environment is wearing a protective coating on the exposed skin that is not protected by clothing.

4. The system of claim 1, further comprising a means of calibrating a direction control mechanism for adjusting a direction that the germicidal radiation emitter emits the germicidal radiation.

5. The system of claim 1, wherein the imaging system comprises a plurality of cameras, wherein at least two cameras of the plurality of cameras are configured to capture images of the environment based on different wavelengths of a radiation spectrum, including at least two of ultraviolet, visible, and infrared wavelengths.

6. A system for disinfecting an environment, the system comprising:

a germicidal radiation emitter that emits hazardous levels of germicidal radiation into the environment;

at least one camera that captures an image of the environment; and

processing circuitry configured to;

analyze the image of the environment and determine a first area in the environment where the hazardous levels of the germicidal radiation can be emitted and cause the germicidal radiation emitter to emit the hazardous levels of the germicidal radiation in the first area;

analyze the image of the environment and determine a second area in the environment where a person is located and where less than the hazardous levels of the germicidal radiation can be emitted and cause the germicidal radiation emitter to emit less than the hazardous levels of the germicidal radiation in the second area,

wherein the processing circuitry is further configured to track movement of the person in the environment.

7. The system of claim 6, wherein the processing circuitry is further configured to detect whether the person in the environment is wearing eye protection and to prevent the germicidal radiation emitter from emitting the hazardous levels of the germicidal radiation onto the person or a head of the person when the person is not wearing the eye protection.

8. The system of claim 6, wherein the processing circuitry is further configured to detect whether the person in the environment is wearing a protective coating on exposed skin that is not protected by clothing.

9. The system of claim 6, wherein the system comprises a plurality of cameras, wherein at least two cameras of the plurality of cameras are configured to capture images of the environment based on different wavelengths of a radiation spectrum, including at least two of ultraviolet, visible, and infrared wavelengths.