公开(公告)号：US12100283B2

公开(公告)日：2024-09-24

申请号：US18005747

申请日：2021-07-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Richard J. Sabacinski ,  Alyssa W. Sabolis

IPC: G08B23/00 ,  G08B21/04 ,  G08B21/12 ,  G08B21/18 ,  G01N33/00

CPC classification number: G08B21/0453 ,  G08B21/12 ,  G08B21/18 ,  G01N33/0063

Abstract: A method for use with a personal protective equipment (PPE) article includes determining, via at least one sensor, a first parameter indicative of a concentration of at least one substance in an ambient environment of the PPE article. The method further includes determining, via a processor, a second parameter indicative of a second order derivative of the first parameter with respect to time. The method further includes retrieving, via the processor, a first threshold value indicative of a protection threshold provided by the PPE article for the at least one substance. The method further includes comparing, via the processor, the second parameter with the first threshold value. The method further includes generating, via the processor, an alert signal based on the comparison of the second parameter with the first threshold value. The method further includes providing, via a user interface, an alert to a user of the PPE article.

公开(公告)号：US20230298450A1

公开(公告)日：2023-09-21

申请号：US18005747

申请日：2021-07-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Richard J. Sabacinski ,  Alyssa W. Sabolis

IPC: G08B21/04 ,  G08B21/18 ,  G08B21/12

CPC classification number: G08B21/0453 ,  G08B21/18 ,  G08B21/12 ,  G01N33/0063

Abstract: A method for use with a personal protective equipment (PPE) article includes determining, via at least one sensor, a first parameter indicative of a concentration of at least one substance in an ambient environment of the PPE article. The method further includes determining, via a processor, a second parameter indicative of a second order derivative of the first parameter with respect to time. The method further includes retrieving, via the processor, a first threshold value indicative of a protection threshold provided by the PPE article for the at least one substance. The method further includes comparing, via the processor, the second parameter with the first threshold value. The method further includes generating, via the processor, an alert signal based on the comparison of the second parameter with the first threshold value. The method further includes providing, via a user interface, an alert to a user of the PPE article.