On-board Device Connection Switching for Power and Reliability
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Solution Overview
Problem
Existing on-board devices in vehicles face challenges in suppressing power consumption while maintaining high reliability, especially as the complexity and communication load of these devices increase.
Innovation Solution
The implementation of an on-board device configuration that includes a processor, a communication port, a first communication integrated circuit, a second communication integrated circuit, and a switching unit, which allows for dynamic switching between different communication states to optimize power consumption and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the processing load and communication load are increased to handle sophisticated functions, then the functionality and versatility are improved, but the power consumption increases
Solution Approach 1:
The communication integrated circuit is divided into a first communication integrated circuit and a second communication integrated circuit. The switching unit selectively connects the processor to either the first or second communication integrated circuit based on communication load conditions, allowing the system to segment communication tasks between low-power and high-performance modes
Solution Approach 2:
The switching unit dynamically changes the connection state between the processor and communication integrated circuits based on real-time communication load conditions. When communication load is low, the system switches to the second communication integrated circuit for power saving. When communication load is high, the system switches to the first communication integrated circuit for enhanced performance
2Use of energy by moving object
If power saving techniques are implemented to reduce power consumption, then energy efficiency is improved, but reliability may deteriorate
Solution Approach 1:
The system prepares two communication integrated circuits in advance - a first communication integrated circuit for high-reliability operations and a second communication integrated circuit for power-saving operations. The switching unit can seamlessly transition between them based on conditions, cushioning against potential reliability issues when using power-saving mode
Solution Approach 2:
The switching unit acts as an intermediary between the processor and the two communication integrated circuits. It monitors communication load conditions and intelligently routes communications through the appropriate interface, ensuring that reliability requirements are met while maximizing power savings when conditions permit
Data Source
AI summary
An on-board device mounted in a vehicle includes: a processor; a communication port; a first communication integrated circuit that is connected to the processor and that is configured to output a frame, which has been received via the communication port from outside the on-board device, to the processor; a second communication integrated circuit that is connected to the processor and is operable when a frame received via the communication port satisfies a predetermined condition, to output the received frame to the processor; and a first switching unit for switching the communication port between being connected to the first communication integrated circuit and being connected to the second communication integrated circuit.