Surface Treatment Machine Liquid Level Control for Range Optimization
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Solution Overview
Problem
Surface treatment machines with liquid treatment face challenges in accurately determining the residual liquid level and range, leading to inefficient route planning and reduced treatment efficiency due to variable liquid flow rates caused by changes in speed and liquid delivery methods.
Innovation Solution
A surface treatment machine equipped with a sensor to measure the residual liquid level, a control unit to adjust the liquid delivery based on the measured level and operator-defined parameters, and a display unit to show the residual range, ensuring a constant liquid supply and optimizing the treatment route.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the machine uses gravity feeding or pump-based liquid delivery, then the machine can treat surfaces effectively, but the flow rate of liquid varies as the reservoir is emptied, reducing the machine's range
Solution Approach 1:
The patent implements a feedback control system where a sensor continuously measures the liquid level in the reservoir and sends signals to a control unit. The control unit automatically adjusts the delivery system (valve or pump) to maintain constant liquid flow rate despite changing reservoir levels, thereby maximizing machine range while ensuring treatment effectiveness
Solution Approach 2:
The system dynamically changes operational parameters (delivery valve opening or pump speed) based on real-time liquid level measurements. As the reservoir level decreases, the control unit adjusts the delivery parameters to compensate for reduced hydrostatic pressure or pump performance, maintaining stable flow rate throughout operation
2Reliability
If the operator increases liquid delivery to ensure sufficient treatment at maximum speed, then treatment effectiveness is maintained, but the machine's range is reduced
Solution Approach 1:
The patent transitions from static liquid delivery (fixed valve opening or pump speed) to dynamic delivery control. The system continuously adapts the delivery rate based on actual liquid level and machine operating conditions, allowing optimal liquid supply at each moment rather than relying on conservative preset values that reduce overall range
3Device complexity
If the machine lacks real-time liquid level information, then the system is simpler, but the operator cannot accurately plan treatment routes or know when replenishment is needed
Solution Approach 1:
The system provides self-monitoring capabilities through automatic liquid level sensing and information display. The sensor and control unit continuously track liquid levels and communicate this information to the operator via display or wireless communication, enabling informed route planning and timely replenishment decisions without adding significant operational complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise control of liquid delivery, maximizing the machine's range and treatment efficiency by providing real-time residual range information, enabling operators to plan optimal routes and avoid unnecessary replenishments.
Implementation Method 1
A sensor (20) is provided which is configured to measure the level of residual liquid in the reservoir (14)
Data Source
AI summary
A surface treatment machine, comprising a frame configured to translate with respect to a surface to treat, a surface treatment element connected to said frame and configured to treat with liquid a surface, a reservoir connected to the frame arranged to provide liquid to the surface treatment element through a delivery mouth; an adjustment element arranged to feed adjustably the liquid supplied from the reservoir to the delivery mouth. It is then provided a sensor adapted to measure the level of residual liquid in the reservoir. A control unit receives from the sensor a signal proportional to residual liquid in the reservoir for adjusting the adjustment element responsive to this value, in order to deliver the liquid with optimization of the flow-rate responsive to a liquid saving parameter. It is possible then to maximize the range of the machine, and to optimize the working time of the operator.