Road Milling Sensor Switchover Without Stopping
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Solution Overview
Problem
Current road milling machines require stopping the operation to change sensors, leading to time loss and potential faults in the milled surface due to the lack of continuous control during sensor switching.
Innovation Solution
The implementation of an additional indication and setting unit allows for pre-selection and preparation of new sensors during operation, enabling seamless switching between sensors without interrupting the milling process, maintaining consistent adjustment values for milling depth and slope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sensor is changed during the milling operation, then the sensor can be updated without stopping the machine, but the control system cannot maintain continuous control during the switching process
Solution Approach 1:
The patent implements a preliminary action by allowing the operator to select and prepare a new sensor in advance through the indication and setting device before actually switching sensors. The system pre-loads the new sensor's parameters and maintains the old sensor's control authority, ensuring that when switching occurs, the control is transferred seamlessly without interruption to the milling operation.
2Reliability
If the machine is stopped to change the sensor, then the sensor can be changed without affecting control, but significant time loss occurs and the milling drum cuts clear when standing
Solution Approach 1:
The patent ensures continuity of useful action by designing the sensor switching mechanism to operate while the milling drum is rotating. The control system continuously processes sensor data and maintains control authority during the switching transition. The indication and setting device allows seamless switching between sensors without requiring the machine to stop, thereby eliminating time loss and preventing the milling drum from cutting clear when standing.
3Adaptability or versatility
If only one indication and setting unit is provided, then the device complexity is reduced, but the operator cannot prepare multiple sensors simultaneously
Solution Approach 1:
The patent applies universality by designing the indication and setting device to serve multiple functions: it can display and adjust parameters for the currently active sensor, pre-configure backup sensors, and manage the switching transition between sensors. This multi-functional design allows the operator to prepare multiple sensors simultaneously without requiring separate indication and setting units for each sensor, thereby maintaining device simplicity while enhancing adaptability.
Data Source
AI summary
A control and switchover system is provided for controlling milling depth and/or slope of a milling drum of a road construction machine during a milling operation to create a milled surface. The system controls the milling depth and/or slope at least in part on a measurement made with a first sensor. Without interrupting the milling operation the system switches over the control of the milling depth and/or slope to control based at least in part on a measurement made with a second sensor.