US 12,188,188 B2
Method for providing information related to the compaction state of a soil when performing a compaction operation with a soil compactor
Fritz Kopf, Vienna (AT); Johannes Pistrol, Vienna (AT); Mario Hager, Zell am Pettenfirst (AT); Dietmar Adam, Brunn am Gebirge (AT); Tobias Fehr, Mitterteich (DE); and Werner Völkel, Neustadt (DE)
Assigned to Hamm AG, Tirschenreuth (DE)
Filed by Hamm AG, Tirschenreuth (DE)
Filed on Oct. 4, 2021, as Appl. No. 17/492,974.
Claims priority of application No. 10 2020 126 084.9 (DE), filed on Oct. 6, 2020.
Prior Publication US 2022/0106744 A1, Apr. 7, 2022
Int. Cl. E01C 19/28 (2006.01); E01C 3/04 (2006.01); E01C 19/26 (2006.01)
CPC E01C 19/288 (2013.01) [E01C 3/04 (2013.01); E01C 19/266 (2013.01); E01C 19/286 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for providing information related to the compaction state of a soil when carrying out a compaction process with a soil compactor, wherein the soil compactor comprises at least one vibratory roller with an imbalance arrangement rotating about a roller rotation axis of the at least one vibratory roller, wherein in association with the at least one vibratory roller an acceleration detection arrangement is provided for detecting a vertical acceleration of the vibratory roller substantially orthogonal to the soil to be compacted and a horizontal acceleration of the at least one vibratory roller substantially parallel to the soil to be compacted, comprising the operations:
a) detecting the vertical acceleration and the horizontal acceleration of the at least one vibratory roller when the soil compactor moves over the soil to be compacted,
b) determining a measurement relationship between a ground contact force and a deflection of the vibratory roller for at least one vibration cycle using the vertical acceleration and horizontal acceleration detected in operation a),
c) determining a simulation relationship between the ground contact force and the deflection for at least one vibration cycle using a ground model taking into account at least one simulation parameter,
d) comparing the simulation relationship determined in operation c) for at least one vibration cycle to the measurement relationship determined in operation b) for at least one vibration cycle,
e) determining that a default value of the at least one simulation parameter taken into account in the ground model substantially represents a corresponding soil parameter of the soil to be compacted, if the comparison performed at operation d) shows that the simulation relationship determined for at least one vibration cycle substantially corresponds to the measurement relationship determined for at least one vibration cycle.