On-vehicle Controller Dynamic ID Allocation
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Solution Overview
Problem
The existing technologies for allocating identification information to module drivers in vehicles result in increased component management and manufacturing costs due to the need for multiple part numbers, as they fail to accurately manage the differences in connection states and types of loads across various vehicle areas, leading to inappropriate control and potential erroneous assembly.
Innovation Solution
An on-vehicle controller system where module drivers communicate with a power distribution section to allocate appropriate IDs based on load IDs, allowing common part numbers for module drivers across areas, and automatically adjusting IDs according to actual connection states and load types, thereby ensuring proper control and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unique IDs are preliminarily determined for module drivers in different areas, then appropriate control for each area can be achieved, but the number of part numbers increases leading to higher component management and manufacturing costs
Solution Approach 1:
The system performs preliminary registration of load IDs in the power distribution section before vehicle assembly. This allows the module driver to later determine its own ID based on which loads are actually connected, eliminating the need for preliminary ID assignment and reducing part numbers while ensuring correct control.
Solution Approach 2:
The module driver automatically determines its own ID by detecting which loads are connected to it. Instead of requiring external assignment of unique IDs for each area, the module driver self-configures based on the actual connection state, reducing manufacturing complexity while maintaining control accuracy.
2Ease of manufacture
If module drivers are managed with common part numbers across areas, then component management and manufacturing costs are reduced, but accurate recognition of module areas and appropriate control become difficult
Solution Approach 1:
The system uses feedback from the connection state of loads to dynamically determine the module driver's ID. The power distribution section receives load ID information from connected loads and uses this feedback to allocate the appropriate module driver ID, ensuring accurate area recognition even with common part numbers.
Solution Approach 2:
The module driver ID is not fixed but changes based on the connection state of loads. By making the ID a variable parameter determined at runtime based on which loads are connected, the system can use common part numbers while still achieving accurate area-specific control.
3Extent of automation
If ID allocation methods from existing technologies are used, then some automation is achieved, but they fail to accurately manage differences in connection states and load types across various vehicle areas
Solution Approach 1:
The system segments the ID allocation process into two distinct phases: preliminary registration of load IDs in the power distribution section, and subsequent determination of module driver ID based on actual load connections. This segmentation allows the system to handle different connection states and load types accurately while maintaining automation.
Data Source
AI summary
A module driver or a master obtains the load IDs of the respective first loads connected to the downstream side of the module driver, recognizes the classification of areas, such as door, roof and floor areas, or a module according to the obtained load IDs, and allocates an appropriate driver ID to the module driver in each area. Each first load has a load ID. The load IDs are allocated to the respective second loads on the downstream side of the module driver on the basis of the allocated driver ID. The area or the module is recognized on the basis of the combination of the load IDs of the plurality of first loads, whereby malfunctions caused by erroneous assembling of the first loads are suppressed.