Patent ID: 6441743
Filing Date: 2002-08-27
Classification: G08B

Abstract:
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=Diâˆ’1+iniÂ·IST+D0 whereinDi=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.