Onboard ECU Priority Coordination for Conflicting Vehicle Controls
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Solution Overview
Problem
Existing vehicle control systems face difficulties in efficiently determining priority for conflicting controls targeting onboard apparatuses, leading to potential delays and inefficiencies.
Innovation Solution
An onboard ECU is introduced that collaboratively determines priority with a vehicle control apparatus, splitting the processing between both units to efficiently handle conflicting controls, with prioritization by the onboard ECU minimizing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single functional unit determines priority for conflicting controls, then the control system structure is simple, but the priority determination becomes difficult and inefficient when multiple controls target the same onboard apparatus
Solution Approach 1:
The priority determination function is segmented between the vehicle control apparatus and the onboard ECU. The onboard ECU independently determines priority for controls targeting onboard apparatuses it manages, while the vehicle control apparatus determines priority for other controls. This segmentation allows parallel processing of priority determinations, improving efficiency without significantly increasing overall system complexity.
2Reliability
If the vehicle control apparatus alone determines priority for all conflicting controls, then centralized control is maintained, but processing delays increase due to single-point bottleneck
Solution Approach 1:
The centralized priority determination function is segmented and distributed to the onboard ECU for controls targeting its managed onboard apparatuses. This allows the vehicle control apparatus to process other priority determinations simultaneously, eliminating the single-point bottleneck while maintaining consistent centralized control through coordinated operation between the two control units.
Solution Approach 2:
The onboard ECU acts as an intermediary control unit that handles priority determination for specific onboard apparatuses independently. This intermediary approach distributes the processing load from the vehicle control apparatus, reducing delays while maintaining overall system coordination through the collaborative priority determination mechanism.
3Productivity
If multiple control units independently determine priority, then processing efficiency improves, but coordination complexity between control units increases
Solution Approach 1:
Each control unit (vehicle control apparatus and onboard ECU) is assigned specific responsibility for determining priority of controls targeting particular onboard apparatuses. The onboard ECU handles priority determination for apparatuses it directly manages, while the vehicle control apparatus handles others. This local quality assignment enables efficient parallel processing with minimal coordination overhead, as each unit operates independently within its designated scope.
Data Source
AI summary
Provided is an onboard ECU communicatively connected to a plurality of onboard apparatuses installed in a vehicle and a vehicle control apparatus that performs priority determination relating to control of the onboard apparatuses that includes a control unit that executes processing relating to the control of the onboard apparatuses, wherein in a case where there is conflict in control targeting one onboard apparatus from among the plurality of onboard apparatuses or an associated onboard apparatus group, the control unit executes priority determination for the control; and an onboard apparatus which is a target for priority determination by the control unit and an onboard apparatus which is a target for priority determination by the vehicle control apparatus overlap at least at a portion.