用于监视气瓶的可用资源的方法和装置

Method of, and apparatus for, monitoring the available resources of a gas cylinder

Abstract

There is provided a method of determining the predicted usage of gas from a gas cylinder and valve assembly having a fixed internal volume. The method comprises determining, using a sensor assembly, the mass of gas in the gas cylinder at a time t, determining, at time t, the average flow rate of gas from the gas cylinder; and determining, at time t, the time remaining until the quantity of gas in the gas cylinder reaches a predetermined level, the time remaining being determined from the mass of gas in the gas cylinder at time t, the average flow rate of gas from the gas cylinder at time t, and a predetermined scaling factor selected in dependence upon the proportion of gas remaining in the gas cylinder at time t. By providing such a method, the average flow rate is determined based on previous measurements, and this is combined with a factor dependent upon the amount of gas remaining in the gas cylinder. Such a method enables a more accurate determination of the time to run out of the gas cylinder.
本发明提供了一种确定来自气瓶和阀组件的气体的预测用量的方法,所述气瓶和阀组件具有固定的内部容积。该方法包括利用气体传感器确定时间t时气瓶中的气体质量;在时间t时,确定来自气瓶的气体的平均流速;并在时间t时,确定直至气瓶中的气体数量达到预定水平时的剩余时间,所述剩余时间根据时间t时气瓶中的气体质量、时间t时来自气瓶的气体的平均流速、以及预定的换算系数而进行确定,所述预定的换算系数依据时间t时气瓶中剩余气体的比例而进行选择。通过提供这种方法,平均流速基于之前测量值而进行确定,并且这结合了倚赖于气瓶中剩余气体的数量的系数。这种方法可实现更精确地确定直至气瓶用完时的时间。

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