Control arrangement for a coffee machine
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Solution Overview
Problem
Existing control arrangements for coffee machines are limited in their ability to perform detailed control of individual components, such as motors and pumps, and lack the capability to identify authorized components, leading to ineffective maintenance and potential use of unauthorized spare parts.
Innovation Solution
A control arrangement featuring 'smart' connectors that enable bi-directional communication between a central unit and peripheral components, allowing for the exchange of information like working hours, historical data, and performance metrics, and ensuring only authorized components are used by encoding the connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a general control arrangement is used for coffee machines, then the control unit can manage functional units, but it cannot perform detailed control of individual components like motors and pumps
Solution Approach 1:
The control arrangement is segmented into a hierarchical structure with a central control unit managing functional units, which in turn control individual components. Each component has its own control circuit that can be independently addressed through the functional unit hierarchy, enabling detailed component control without requiring a separate direct connection from the central control unit to each component.
Solution Approach 2:
Functional units act as intermediary control layers between the central control unit and individual components. The functional unit control circuits receive commands from the central control unit and translate them into specific component control signals, enabling detailed component control while maintaining system architecture simplicity.
2Productivity
If maintenance is performed based on general functional unit information, then the control system remains simple, but maintenance operations become ineffective and time-consuming
Solution Approach 1:
Each component is equipped with a control circuit that can provide feedback information to the central control unit through the functional unit hierarchy. This feedback includes operational status, error conditions, and maintenance requirements, enabling the system to identify specific components needing maintenance and provide targeted diagnostic information to reduce maintenance time.
Solution Approach 2:
The patent replaces manual inspection and general functional unit monitoring with an automated electronic control and monitoring system. The control circuits in each component continuously report status information electronically, allowing the system to automatically identify maintenance needs and guide technicians to specific components, significantly reducing maintenance time.
3Loss of information
If all information is stored in the main control unit, then the control architecture is centralized, but peripheral units lose their historical operation data when removed from the machine
Solution Approach 1:
Each component is equipped with its own control circuit that locally stores operational information and historical data. This distributed storage approach ensures that each component retains its own data independently, so when a component is removed from the machine, its historical information remains intact in the local control circuit rather than being lost.
Solution Approach 2:
The control circuit in each component merges multiple functions: local data storage, processing capabilities, and communication interfaces. This integration allows the component to maintain its own historical data while also being able to communicate with the central control unit and functional units, combining local autonomy with system-wide connectivity.
Data Source
AI summary
A control arrangement for a coffee machine is provided and comprises a central unit having a main control unit and a plurality of peripheral units/components. Each peripheral unit/component is connected to the central unit by means of a “smart” connector, which is coded and which can provide information relating to the unit/component connected thereto to the main control unit. In order to allow information to be transferred, the central unit comprises a master communication device, each peripheral unit/component is provided with a slave communication device, and a communication line is provided for connecting the master communication device to the slave communication devices. The transferred information is unambiguously associated to the unit/component and may comprise counters, historical information, performance data and the like.