Method and apparatus for determining hazard levels of chemical/biological/nuclear agents in an environment
AssigneeThe MITRE Corporation
InventorEugene L. Berger
Life of this patent
Estimating the term…
Abstract
A system and method for determining hazard levels of chemical, biological, and nuclear agent in an environment processes chemical vapor concentration measurements and generates hazard levels of the chemical vapor. The system and method provide an estimate of hazard level values by using an exponentially weighted moving integration of the vapor concentrations. When the estimated hazard level values match or exceed empirically predetermined hazard accumulated dosage values for a particular chemical, biological, or nuclear agent, an indication of the level of hazard is generated.
Claims6
A method of determining hazard levels of a vapor in an environment, comprising the steps of:
- (a) measuring concentrations of said vapor in said environment;
- (b) estimating hazard level values of said vapor in said environment by applying an exponentially weighted moving integration to said measured concentrations;
- (c) predetermining hazard dosage values;
- (d) comparing said estimated hazard level values to said predetermined hazard dosage values;
- (e) generating an indication of the level of hazard when said estimated hazard level values substantially match said predetermined hazard dosage values;
- and,
- (f) calculating a cumulative dosage by integrating said measured concentrations of said vapor according to:
- Di=Di−1+ini·IST+D0
- wherein
- Di=the cumulative dosage at the ith sample,
- ini=the measured concentration at the ith sample,
- IST=the dependent sample time, and
- D0=the initial value of the dosage.
A method of determining hazard levels of a vapor in an environment, comprising the steps of:
- (a) measuring concentrations of said vapor in said environment,
- (b) estimating hazard level values of said vapor in said environment by applying an exponentially weighted moving integration to said measured concentrations, said estimated hazard level values being calculated according to:
- DIi=DIi−1+ini·IST−TRi·DIi−1·IST,
- wherein DIi=the exponentially weighed moving integral at the ith sample,
- DIi−1=the exponentially weighted moving integral previous to the ith sample,
- ini=the measured concentration at the ith sample,
- IST=the independent sample time, and
- TRi=the ith decay rate,
- (c) predetermining hazard dosage values,
- (d) comparing said estimated hazard level values to said predetermined hazard dosage values, and
- (e) generating an indication of the level of hazard when said estimated hazard level values substantially match said predetermined hazard dosage values.
Dependencies are inferred from the claim text.