US 12,007,418 B2
Advanced charge transfer measurement techniques
Frederick Johannes Bruwer, Paarl (CA); Daniel Barend Rademeyer, Paarl (CA); and Nico Johann Swanepoel, Paarl (CA)
Assigned to AZOTEQ HOLDINGS LIMITED, Nicosia (CY)
Filed by AZOTEQ HOLDINGS LIMITED, Nicosia (CY)
Filed on Jun. 30, 2022, as Appl. No. 17/855,295.
Claims priority of application No. 2021/06115 (ZA), filed on Aug. 25, 2021.
Prior Publication US 2023/0003775 A1, Jan. 5, 2023
Int. Cl. G01R 19/165 (2006.01)
CPC G01R 19/16576 (2013.01) [H02J 2207/50 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A measurement circuit that repetitively transfers charge from a sensor to a storage element for measuring a change in a parameter of the sensor, said circuit characterised by a binary stream produced as output, wherein a binary one is produced in said stream every time a voltage of said storage element exceeds a threshold due to said transfers to cause a comparator to trip, a binary zero is produced in said stream when the storage element voltage is below said threshold and wherein the circuit removes a predetermined amount of charge from the storage element after each comparator trip to cause the storage element voltage to reduce by a predetermined minimum amount below said threshold.