Milling depth control based on real time layer analysis of a stratified surface to be milled

A milling depth control system for a milling machine configured to mill a stratified surface, wherein the milling machine comprises a milling tool that is vertically adjustable relative to the milling machine and configured to mill the stratified surface to a settable milling depth, wherein the milling depth control system comprises:

• a layer measuring sensor configured to be mounted on the milling machine in front of the milling tool in the forward direction of travel of the milling machine, wherein the layer measuring sensor is configured to provide measurement data for identifying different surface layers of the stratified surface and for determining thicknesses of the different surface layers, and
• a data processing unit having a communication interface for providing connection to a control unit of the milling machine, wherein the data processing unit is configured:
• to receive measurement data of the layer measuring sensor obtained during a currently running milling process of the milling machine,
• to carry out a layer analysis of the stratified surface based on the measurement data to provide a planned final milling depth for an associated surface location captured by the measurement data, and
• to provide the control unit a control signal for setting a milling depth of the currently running milling process, wherein the control signal provides for setting the planned final milling depth for the associated surface location.