US 12,446,203 B2
System for determining contamination coefficients and/or degrees of contamination in particular during the reflow soldering of printed circuit boards, and associated evaluation unit
Michael Haas, Schollbrunn (DE); Benedict Fleischmann, Neubrunn (DE); Harald Grumm, Ottobrunn (DE); and Lukas Thanhäuser, Würzburg (DE)
Assigned to ERSA GmbH, Wertheim (DE)
Filed by ERSA GmbH, Wertheim (DE)
Filed on May 24, 2023, as Appl. No. 18/201,552.
Claims priority of application No. 10 2022 113 851.8 (DE), filed on Jun. 1, 2022.
Prior Publication US 2024/0138134 A1, Apr. 25, 2024
Prior Publication US 2024/0237322 A9, Jul. 11, 2024
Int. Cl. H05K 13/08 (2006.01); H05K 5/00 (2025.01); H05K 13/04 (2006.01)
CPC H05K 13/0817 (2018.08) [H05K 5/0018 (2022.08); H05K 13/0465 (2013.01); H05K 13/085 (2018.08); H05K 13/0895 (2018.08)] 19 Claims
OG exemplary drawing
 
1. A system for determining at least one of a contamination coefficient of products to be soldered and/or a degree of contamination of production units of a production line for soldering products,
the production units each comprising actuators and a dedicated production control unit for generating control data for controlling their respective actuators,
wherein a production planning unit is provided which is configured to generate production data for soldering orders for soldering the products and to communicate the generated production data at least partially to the individual production control units,
wherein the production units comprise sensors for monitoring state changes, and
wherein the sensors are configured to generate sensor data as a function of state changes,
wherein an evaluation unit having a controller and a memory is provided,
wherein the production data, the control data and the sensor data of at least one production unit are transmitted to the controller of the evaluation unit, and
wherein the evaluation unit is configured such that its memory stores commands which, when processed by its controller, cause the controller:
on the basis of the production data generated by the production planning unit, the control data generated by the respective production control unit and the sensor data generated by at least a plurality of sensors
to determine the contamination coefficient of the products and/or of the soldering order and/or
to determine the degree of contamination of at least one of the production units and/or of at least one function of a production unit,
and
to execute a control algorithm in order to generate control signals representing the contamination coefficient and/or the degree of contamination.