One-Wire Bus Auto-E-Connect Device Replacement
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Solution Overview
Problem
In one-wire bus systems, replacing devices requires manual reassignment of functional roles, leading to errors and increased effort, especially in installations with many identical devices monitoring critical states, where incorrect assignments can have severe consequences.
Innovation Solution
The introduction of additional data endpoints on one-wire devices that allow for automatic functional assignment by the bus master when compatible devices are replaced, including read-only memories for type and calibration data, and logical addresses that can be managed securely, enabling Auto-E-Connect for seamless device exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual functional assignment is used during bus commissioning, then initial device configuration is achieved, but device replacement requires time-consuming reassignment and is error-prone
Solution Approach 1:
The patent applies preliminary action by pre-configuring devices with unique identification addresses and device family information during manufacturing. This preliminary encoding allows the bus master to automatically recognize and assign functions to replacement devices without manual reconfiguration, eliminating the time-consuming manual reassignment process while ensuring accurate functional mapping.
2Reliability
If manual functional assignment is used, then initial configuration is completed, but errors in assignment can have severe consequences in critical monitoring applications
Solution Approach 1:
The patent implements self-service by enabling the bus master to automatically query device identification addresses and device family information, then autonomously perform functional assignment based on this data. This automated self-configuration process eliminates manual intervention errors while maintaining operational simplicity, ensuring reliable functional mapping even in critical monitoring applications.
3Adaptability or versatility
If unique identification addresses are used for each device, then device individuality is maintained, but distinguishing and assigning identical devices becomes difficult
Solution Approach 1:
The patent applies copying by using device family information that represents a template or category for groups of identical devices. Instead of manually configuring each individual device, the system copies functional assignments from the device family definition to multiple devices within that family, enabling seamless interchangeability while reducing the complexity of identification and assignment processes.
Data Source
Figure 1
AI summary
The present invention relates to a one-wire bus system (1) with at least one one-wire device (2) having a data endpoint, characterized in that the one-wire devices (2) have one or more additional data endpoints (4) which can be read and/or written using special commands, wherein these additional data endpoints (4) have memory containing information about the respective one-wire device (2) and/or one or more dedicated binary sensors and input devices and/or simple or n-tuples of dedicated actuators.