Socket Voltage Bus Slave Addressing via Diode Series
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Solution Overview
Problem
In master-slave fieldbus networks, existing methods for identifying and resetting slave addresses are inefficient, particularly when address conflicts occur or when slaves are not configured correctly, often requiring additional signal lines or costly and unreliable hardware solutions.
Innovation Solution
A method and system utilizing a socket voltage bus (SVB) with diodes connected in series between slaves, where the master outputs a preset voltage to detect and reset slave addresses by calculating voltage differences to determine unique socket numbers, allowing for automatic and efficient address identification and resetting with minimal additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sequential addressing method is used according to connection sequence, then device complexity is reduced, but the system cannot handle address conflicts or vacant sockets
Solution Approach 1:
The patent replaces the mechanical/manual address configuration method with an automatic electrical detection system. The master device automatically detects slave addresses by measuring voltage levels on the bus, eliminating the need for manual address assignment and resolving address conflicts without human intervention.
Solution Approach 2:
The slave devices automatically participate in the address detection process by pulling the bus voltage to a low level when selected. This self-service mechanism allows the system to automatically identify and assign addresses without requiring external configuration devices or manual intervention.
2Measurement precision
If chip selection signal lines are added for each slave, then address identification capability is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent makes the existing data signal lines serve dual functions: both data communication and address detection. By detecting voltage levels on the same bus used for data transmission, the system eliminates the need for separate address signal lines, reducing complexity while maintaining full address identification capability.
Solution Approach 2:
The patent merges the address detection function with the existing data communication bus. Instead of using separate signal lines for addressing, the system combines both functions into the same physical medium, thereby reducing the total number of signal lines required.
3Ease of operation
If DSDT switch or relay is used for signal connection control, then orderly address identification is achieved, but reliability decreases and cost increases
Solution Approach 1:
The patent extracts the address identification function from the physical signal connection structure. Instead of relying on mechanical switches or relays to control signal flow, the system uses electrical voltage level detection to identify addresses, eliminating unreliable mechanical components entirely.
Solution Approach 2:
The patent replaces mechanical switching devices (DSDT switches and relays) with an electrical detection mechanism. The master device controls and detects slave addresses through voltage level measurements on the bus, substituting mechanical signal routing with electrical field-based identification.
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 approach enables automatic and efficient identification and resetting of slave addresses, preventing bus conflicts and address mismatches, while requiring only two transmission signal lines and reducing hardware costs, ensuring normal communication and improving monitoring system intelligence.
Implementation Method 1
at least one diode is connected in series between individual slaves by the SVB bus
Implementation Method 2
resetting each slave address by detecting a voltage value of each slave
Data Source
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AI summary
A method for orderly identifying slave addresses from a master-slave fieldbus includes: setting a socket voltage bus (SVB) which is used to connect a master and slaves in series, and connecting at least one diode in series between individual slaves by the SVB bus; when slave addresses conflict or a new slave is added, the master controlling the slave to output a preset voltage to the SVB bus, and resetting each slave address by detecting the voltage value of each slave. A corresponding system is further provided by the present document. The above-mentioned method and system for orderly identifying slave addresses from a master-slave fieldbus realizes automatically and orderly identifying the slave addresses from the master-slave fieldbus.