Turkish coffee brewing method with capacitive sensor and the machine thereof
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Solution Overview
Problem
Existing Turkish coffee brewing methods using sensors face inaccuracies due to external factors and fail to consistently determine the brewing point, as they rely on temperature and energy limits that do not account for foam levels and ingredient density, leading to inconsistent results and potential failures in brewing.
Innovation Solution
A Turkish coffee machine equipped with capacitive sensors that measure the coffee-water mixture level and boiling point, using a microprocessor to adjust the resistor power rating coefficient based on these measurements to ensure consistent brewing, and optionally employing a Faraday cage to shield sensors from external parasites, allowing for precise control of the brewing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If temperature sensors are used to detect brewing point, then temperature control is achieved, but measurement precision deteriorates due to external factors and parasites
Solution Approach 1:
The patent replaces temperature-based sensing with a capacitive sensing system that measures the dielectric properties of the coffee mixture. This substitution eliminates the need for direct thermal contact sensors, thereby avoiding interference from external thermal factors and parasites while maintaining accurate brewing point detection through electrical field interactions with the mixture.
Solution Approach 2:
The patent introduces a capacitive sensor as an intermediary measurement mechanism. Instead of directly measuring temperature with a sensor immersed in the mixture, the system uses capacitance changes caused by the mixture's dielectric properties as an intermediate indicator of brewing state, which is less susceptible to external interference.
2Use of energy by moving object
If total energy limit is used to determine brewing completion, then energy control is simplified, but manufacturing precision deteriorates because it doesn't account for foam amount and ingredient density
Solution Approach 1:
The patent implements a feedback mechanism using capacitive sensors to continuously monitor the dielectric properties of the coffee mixture throughout the brewing process. This real-time feedback allows the system to adjust energy input dynamically based on actual mixture state, accounting for variations in foam amount and ingredient density, thereby achieving precise brewing control that adapts to each specific brewing condition.
3Temperature
If water level is determined by temperature increase change, then level detection is achieved, but measurement precision deteriorates due to density variations of ingredients
Solution Approach 1:
The patent changes the measurement parameter from temperature-based level detection to capacitance-based detection. By measuring the dielectric properties of the mixture, the system directly correlates capacitance changes with liquid level and composition, providing accurate water level detection that is independent of temperature variations and ingredient density differences.
4Difficulty of detecting and measuring
If sensors are exposed to external factors, then sensing capability is maintained, but reliability deteriorates due to parasites and interference
Solution Approach 1:
The patent replaces vulnerable temperature and level sensors with a capacitive sensing system that uses electrical fields to detect mixture properties. This substitution eliminates the need for physical sensor contact with the hot mixture, thereby maintaining full sensing capability while significantly improving reliability by removing sensors from the path of thermal and chemical interference.
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
The capacitive sensor-based system provides accurate and consistent Turkish coffee brewing by adjusting power levels according to mixture levels and boiling points, ensuring reliable and repeatable results, independent of external factors, and enabling features like double brewing and automatic water filling.
Implementation Method 1
The capacitance sensor is also provided for sensing the capacity between heater and sensor
Implementation Method 2
a heater located underneath the brewing room for heating the pot
Implementation Method 3
optionally employing a Faraday cage to shield sensors from external parasites
Data Source
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AI summary
Present invention relates to a Turkish coffee brewing method with Turkish coffee machine (0). Said method comprises the steps of measurement of initial coffee-water mixture level (Mix0) with at least one capacitive sensor (4), calculation of target coffee-water mixture level (MixT) with initial coffe-water mixture level (Mix0), measurement of coffee-water mixture level (MixI) through brewing process with at least one capacitive sensor and measurement of whether the coffee water mixture reached the boiling point with at least one capacitive sensor to determine the boiling information (TB), determination of resistor power rating coefficient (λ) according to coffee-water mixture level (MixI) and the boiling information (TB), termination of brewing process when target coffee-water mixture level (MixT) is measured.