公开(公告)号：US20150168189A1

公开(公告)日：2015-06-18

申请号：US14570235

申请日：2014-12-15

Applicant: ABB Technology AG

Inventor： Frank WIEDERHOLD

IPC: G01F1/66 ,  G01F1/58 ,  G01F25/00

CPC classification number: G01F1/66 ,  G01F1/586 ,  G01F1/8431 ,  G01F1/8436 ,  G01F25/0007

Abstract: A method and system are disclosed for determination of a time of flight of working signals in a measuring instrument, which are respectively transmitted independently of one another via structurally equivalent individual signal paths from a respective signal source to a common signal sink, and for correction of the working signals. The method can include generating a test signal, which is superimposed simultaneously and in-phase on at least two working signals at identical structural elements of the structurally equivalent individual signal paths; determining time of flight differences of the test signal over the respective signal paths at the common signal sink; and correcting the phase differences of the working signals over the respective signal paths of the test signal as a function of the time of flight differences determined for the test signal.

Abstract translation: 公开了一种用于确定测量仪器中工作信号的飞行时间的方法和系统，它们分别通过从相应信号源到公共信号接收器的结构上等效的单独信号路径彼此独立地发送，并且用于校正 工作信号。 该方法可以包括产生测试信号，该测试信号在结构上相当的各个信号路径的相同结构元件上同时并且同时地叠加在至少两个工作信号上; 确定测试信号在公共信号汇点处的相应信号路径上的飞行差异时间; 以及根据为测试信号确定的飞行时间差的函数来校正测试信号的各个信号路径上的工作信号的相位差。