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发明公开
CN108431557A 用于确定位于容器中的填充物质的料位的方法 有权

用于确定位于容器中的填充物质的料位的方法
摘要：
本发明涉及一种用于确定在容器(1)中的填充材料(2)的料位(L)的方法。基于脉冲传播时间方法的此方法通过超程回波可以被检测的事实加以区别。为此目的，该方法包括两个子方法，其中在每种情况下，在连续的测量循环中以不同的重复率(fR1，fR2)在填充材料(2)表面的方向上发射微波脉冲(S1，S2)。在每个子方法中，确定每种情况下的传播时间(t1，t2)。在这种情况下，假定第一传播时间(t1)和第二传播时间(t2)大致对应，基于第一传播时间(t1)和/或基于第二传播时间(t2)来确定料位(L)。否则，假定基础的回波脉冲(E1，E2)是超程回波。借助于根据本发明的方法，因此可以确保在基于脉冲雷达的料位测量中不确定作为超程回波结果的不正确的料位值。
摘要（英）：

The invention relates to a method for determining the filling level (L) of a filling material (2) in a container (1). This method, which is based on the pulse transit time method, is distinguished bythe fact that overshoot echoes can be detected. For this purpose, the method comprises two submethods in which microwave pulses (S1, S2) are emitted in the direction of the surface of the filling material (2) in successive measurement cycles at a different repetition rate (fR1, fR2) in each case. In each submethod, a transit time (t1, t2) is determined in each case. In this case, the filling level(L) is determined on the basis of the first transit time (t1) and/or on the basis of the second transit time (t2) provided that they approximately correspond. Otherwise, it is assumed that the underlying echo pulses (E1, E2) are overshoot echoes. By means of the method according to the invention, it can therefore be ensured, in filling level measurements based on pulse radar, that no incorrect filling level values are determined as a result of overshoot echoes.

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