US 11,867,545 B2
Time of flight detecting method for a phase shifted signal train including a sequence of waves inserted between a first group and a second group
Matthias Bürkle, Eindhoven (NL); Stefan Kern, Eindhoven (NL); and Augustin Braun, Eindhoven (NL)
Assigned to Sciosense B.V., AE Eindhoven (NL)
Appl. No. 17/294,995
Filed by Sciosense B.V., AE Eindhoven (NL)
PCT Filed Nov. 20, 2019, PCT No. PCT/EP2019/081936
§ 371(c)(1), (2) Date May 18, 2021,
PCT Pub. No. WO2020/104529, PCT Pub. Date May 28, 2020.
Claims priority of application No. 18207376 (EP), filed on Nov. 20, 2018.
Prior Publication US 2022/0011144 A1, Jan. 13, 2022
Int. Cl. G01F 1/66 (2022.01); G01F 1/667 (2022.01); G01P 5/24 (2006.01)
CPC G01F 1/667 (2013.01) [G01F 1/662 (2013.01); G01P 5/245 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for detecting a time-of-flight signal, the method comprising:
transmitting a signal train through a medium, wherein the signal train comprises a sequence of waves of a first group and of a second group, wherein the first and second groups are shifted in a time domain according to a predetermined phase shift, and wherein the phase shift is inserted between the first group and the second group such that the first group of waves is transmitted earlier in time than the second group of waves;
receiving the signal train as a received signal train and as a function of time;
detecting a phase shift in the received signal train;
assigning wave periods of the received signal train to respective wave periods of the first group using the detected phase shift as a reference; and
determining a sequence of time-of-flight signals from the sequence of waves of the first group and the assigned wave periods of the received signal train, respectively.