LIN Slave Node Control System Dynamic Power Management
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Solution Overview
Problem
Current LIN slave node control systems face significant power consumption issues due to the continuous activation of processing and sensor modules, even when not in use, leading to increased energy expenditure and reduced reliability in high-temperature environments, particularly in vehicles where multiple slave nodes contribute to overall power consumption.
Innovation Solution
A control system for LIN slave nodes that includes an electronic control part with a signal detection, reception, and control module, a processing module, and a signal transmitting module, allowing for dynamic activation and hibernation based on signal presence and analysis results, enabling the node to switch between various operational modes to minimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the processing module and sensor module are continuously activated to ensure responsive operation, then the reliability and responsiveness of the slave node is improved, but the power consumption increases significantly
Solution Approach 1:
The patent implements dynamic power management by switching the processing module and sensor module between activated and hibernated states based on operational requirements. The control module receives activation instructions, activates the processing module to analyze signals and determine module states, then activates or hibernates the sensor module accordingly. This dynamic state transition ensures modules are active only when needed, reducing power consumption while maintaining reliability during operation.
Solution Approach 2:
The system employs periodic activation and hibernation cycles for the processing and sensor modules. Instead of continuous operation, the modules are activated periodically based on received instructions and operational needs, then hibernated during idle periods. This periodic action pattern significantly reduces average power consumption while ensuring the system remains responsive when activation is required.
2Loss of energy
If the slave node modules are hibernated during idle periods to reduce power consumption, then energy efficiency is improved, but the system responsiveness and operational capability deteriorates
Solution Approach 1:
The control module is designed to receive and process activation instructions in advance, activating the processing module before sensor module activation decisions are made. This preliminary activation ensures the system is prepared to quickly transition to full operational mode when needed, maintaining responsiveness while minimizing the time spent in hibernation state for energy efficiency.
Solution Approach 2:
The system implements feedback mechanisms where the control module continuously monitors for activation instructions and operational signals. When signals indicate operational requirements, the control module activates the processing module to analyze signals and determine the appropriate state of the sensor module. This feedback loop ensures the system responds quickly to operational needs while maintaining energy efficiency during idle periods.
3Adaptability or versatility
If more slave nodes are added to the LIN network to expand functionality, then the system versatility is improved, but the total power consumption of the network increases
Solution Approach 1:
The patent segments the slave node into distinct functional modules (control module, processing module, sensor module) that can be independently activated and hibernated. This segmentation allows each module to operate only when required, reducing the power consumption of individual nodes. When multiple nodes are deployed in the LIN network, each node benefits from this modular architecture, preventing cumulative power consumption increases while maintaining expanded network functionality.
Data Source
AI summary
An LIN slave node control system, an LIN slave node and a method are provided. The system includes an electronic control part, which includes: an LIN signal detection, reception, and control module, a processing module connected to the LIN signal detection, reception, and control module and an LIN signal transmitting module connected to the processing module; the processing module generates, according to acquired analysis results, control signals for activating the LIN signal transmitting module, and transmits the control signals to the LIN signal detection, reception, and control module, or blocks LIN signal transmitting module and/or processing module control signals; the LIN signal detection, reception, and control module activates the processing module according to awake signals from an LIN bus, activates the LIN signal transmitting module according to the control signals from the processing module, or can block the LIN signal transmitting module and/or the processing module.