US 12,135,302 B2
Sensing device compensating for cross-sensitivity to analytes
Mordechai Kornbluth, Brighton, MA (US); Shilpa Pant, Singapore (IN); and Kaushal Sagar, Singapore (IN)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Mar. 17, 2022, as Appl. No. 17/697,515.
Prior Publication US 2023/0296545 A1, Sep. 21, 2023
Int. Cl. G01N 27/06 (2006.01); B01L 3/00 (2006.01); G01N 21/64 (2006.01); G01N 21/77 (2006.01); G01N 27/327 (2006.01); G01N 27/333 (2006.01)
CPC G01N 27/06 (2013.01) [B01L 3/502715 (2013.01); G01N 21/64 (2013.01); B01L 2300/0645 (2013.01); B01L 2300/0654 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sensing device comprising:
a film sensor including a receptor capturing an intended analyte and an unintended analyte in a fluid medium to generate a film sensor signal, the receptor has a receptor cross-sensitivity to the unintended analyte;
a second sensor contacting the fluid medium including the intended analyte and the unintended analyte to generate a second sensor signal, the second sensor has a second cross-sensitivity to the unintended analyte different than the receptor cross-sensitivity to the unintended analyte, the second sensor is a conductivity sensor generating the second sensor signal indicative of a conductivity of the fluid medium including the intended analyte and the unintended analyte, the conductivity sensor is an ammeter or an inductive conductivity sensor, the second cross-sensitivity is a conductivity cross-sensitivity represented at least partially by a Nernst-Einstein equation; and
a controller programmed to determine a concentration of the intended analyte in the fluid medium in response to the film sensor signal, the receptor cross-sensitivity, the second sensor signal, and the second cross-sensitivity.