US 11,656,166 B2
Method and apparatus for detecting particles
Robert Wolf, Dresden (DE); Alexander Van Der Lee, Venlo (NL); Rico Srowik, Radebeul (DE); Hans Spruit, Waalre (NL); and Okke Ouweltjes, Sterksel (NL)
Assigned to Robert Bosch GmbH, Stuttgart (DE); and Trumpf Photonic Components GmbH, Ulm (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE); and Trumpf Photonic Components GmbH, Ulm (DE)
Filed on Nov. 20, 2019, as Appl. No. 16/689,399.
Claims priority of application No. 102018220600.7 (DE), filed on Nov. 29, 2018.
Prior Publication US 2020/0173904 A1, Jun. 4, 2020
Int. Cl. G01N 15/10 (2006.01)
CPC G01N 15/1012 (2013.01) 9 Claims
OG exemplary drawing
 
1. A method for detecting particles, comprising the steps of:
receiving a measurement signal;
calculating at least one estimated noise value using the received measurement signal; and
detecting the particles using the measurement signal on the basis of at least one detection criterion, wherein the at least one detection criterion depends on the at least one calculated estimated noise value,
wherein at least one estimated noise value is respectively calculated for a multiplicity of frequency ranges using the received measurement signal, and wherein a detection value is calculated for the purpose of detecting the particles for each frequency range of the multiplicity of frequency ranges on the basis of one detection criterion of the at least one detection criterion.