Patent ID: 11946919
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of determining presence of a chemical or combination of chemicals in an environment, the method comprising:
receiving, by an exposure application stored in a non-transitory memory and executed on a processor, a plurality of sensor readings from a plurality of chemical sensors via a communication device associated with an individual, wherein each chemical sensor of the plurality of chemical sensors is configured to detect a different chemical;
determining, by the exposure application, a cross-sensitivity pattern from the plurality of sensor readings;
determining which chemical or chemicals from a list of chemicals that may be present at allocation of the plurality of chemical sensors based on a cross-sensitivity of each chemical on the list;
comparing, by the exposure application, the cross-sensitivity pattern with one or more known chemical patterns, each of the one or more known chemical patterns corresponding to a known chemical or a known combination of chemicals, and wherein the one or more known chemical patterns include chemical patterns for the chemicals in the list;
determining that the cross-sensitivity pattern matches one of the one or more known chemical patterns;
identifying a chemical or combination of chemicals giving rise to the cross-sensitivity pattern based on determining that the cross-sensitivity pattern matches the one of the one or more known chemical patterns;
determining, by the communication device, the presence of a current type of personal protective equipment and compliance with proper positioning of the personal protective equipment by the individual;
determining, by the exposure application an exposure threshold level for the individual based on the determined current type of personal protective equipment, the determined compliance with the proper positioning of the personal protective equipment associated with the individual, and the identification of the chemical or combination of chemicals giving rise to the cross-sensitivity pattern;
monitoring, by the exposure application, an exposure value of the individual to the identified chemical or combination of chemicals giving rise to the cross-sensitivity pattern; and
when it is determined that the exposure value exceeds the exposure threshold level for the individual, sending to the communication device a warning on the presence of the chemical or combination of chemicals including a notification to use a particular type of personal protective equipment.