Systems and methods for measuring forces in earth moving machinery and control thereof, and automatic or semi-automatic machinery

System (1-3) for earth moving machinery (100), comprising: a plurality of wear elements (10- 15) adapted for coupling with a blade (111) of digging implements(110) of an earth moving machine (100); one or more sensors (20) for measuring forces, each sensor of the one or more sensors (20) being arranged in one wear element of the plurality of wear elements (10-15) or between two wear elements of the plurality of wear elements (10-15); and central control means (50) for processing measurements of the one or more sensors (20) in order to calculate force withstood by the wear elements (10-15).