Robot Arm Coffee Drip Control for Uniform Taste and High Throughput
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Solution Overview
Problem
Current coffee-making robots cannot consistently produce uniform hand drip coffee and are inefficient in producing large quantities quickly, as the taste of hand drip coffee varies with the drip method and is time-consuming to prepare.
Innovation Solution
A robot arm control system that checks the arrangement of a dripper, coffee powder container, and kettle, provides coffee powder, performs a controlled dripping operation using various methods, and discharges the coffee, allowing for simultaneous processing of multiple cups and optimizing drip motions based on water temperature and coffee powder swelling analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a robot performs hand drip coffee using traditional methods, then the coffee can be made, but the taste varies and it takes a long time
Solution Approach 1:
The patent applies parameter changes by implementing multiple drip methods (first drip method with slow pouring, second drip method with rapid pouring, third drip method with circular motion) and adjusting pouring speed, motion patterns, and water temperature parameters to achieve both uniform taste and reduced preparation time. The controller selects different drip methods based on coffee bean type and desired taste profile.
Solution Approach 2:
The patent implements dynamics by enabling the robot arm to perform various dynamic motions including vertical pouring, circular motions, and spiral patterns during the drip process. The system dynamically adjusts pouring speed, arm movement trajectories, and water flow rates to optimize both taste consistency and preparation efficiency.
2Reliability
If a robot performs hand drip coffee one cup at a time, then the taste can be controlled, but the productivity is low
Solution Approach 1:
The patent applies segmentation by dividing the coffee preparation process into independent, repeatable modules: coffee powder providing operation, dripping operation with multiple methods, and discharging operation. The system can segment the dripping process into multiple stages (first drip, second drip, third drip methods) that can be applied to multiple cups in sequence, maintaining taste consistency while increasing throughput.
Solution Approach 2:
The patent implements continuity of useful action by enabling the robot arm to continuously perform coffee preparation operations without interruption. The system maintains continuous operation through automated transitions between different drip methods and cups, with the controller managing seamless sequences that maximize productivity while preserving taste quality.
3Device complexity
If the robot arm uses simple gripping and pouring, then the device complexity is low, but the manufacturing precision of coffee drip is poor
Solution Approach 1:
The patent applies periodic action by implementing structured, repeating motion patterns including circular motions, spiral patterns, and rhythmic pouring sequences. The controller executes periodic operations with precise timing and repetition, such as the third drip method that performs circular motions at specific intervals, achieving high drip precision through standardized periodic patterns rather than complex continuous control.
Data Source
AI summary
A method of controlling a robot arm for performing coffee drip includes: an arrangement checking operation of checking an arrangement of a dripper, a coffee powder container, a cup, and a kettle; a coffee powder providing operation of, when the arrangement of the cup is sensed, gripping the coffee powder container and providing a coffee powder contained in the coffee powder container to the dripper, by using the robot arm; a dripping operation of, when the coffee powder is provided to the dripper, gripping the kettle and performing a drip operation using any one of a plurality of predetermined methods, by using the robot arm; and a discharging operation of, when the dripping operation is completed, gripping the cup and transferring the cup to a discharge position.