Vehicle Control Device Update Target Identification
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Solution Overview
Problem
Existing methods for automatically updating on-vehicle control devices through wireless communication face challenges in accurately identifying the target vehicle or device for update without waking it up, potentially leading to incorrect updates and power-related issues due to insufficient battery levels.
Innovation Solution
The implementation of a power-saving mode in on-vehicle control devices allows for communication with a data server even when parked, enabling the device to determine if an update request is intended for itself and only transitioning to a normal mode if the battery level is sufficient for the update, thus avoiding unnecessary wake-ups and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vehicle is woken up from sleep state to confirm update subject and update capability, then the data server can accurately identify the target vehicle and device for update, but the control becomes complicated and power consumption increases
Solution Approach 1:
The patent applies preliminary action by having the vehicle send its identification information and update capability status to the data server in advance, before any update request is made. This allows the server to pre-register and identify target vehicles without needing to wake them up during the actual update confirmation process, thereby maintaining accurate identification while simplifying the control flow.
Solution Approach 2:
The vehicle autonomously sends its own identification information and update capability status to the data server without external prompting. This self-service approach eliminates the need for the server to actively wake up and query each vehicle, reducing control complexity while ensuring accurate target identification through pre-sent vehicle information.
2Measurement precision
If the vehicle is woken up from sleep state to confirm update subject and update capability, then the data server can accurately identify the target vehicle and device for update, but power consumption increases
Solution Approach 1:
The vehicle performs preliminary actions by sending its identification and capability status while in sleep state or low-power mode, before any update operation begins. This allows the data server to have all necessary information ready, eliminating the need to wake the vehicle during update confirmation, thus maintaining accurate identification while minimizing power consumption.
Solution Approach 2:
The vehicle proactively provides its own update capability information and identification to the server without being woken up. This self-service mechanism ensures the server can accurately identify update targets using pre-sent information, avoiding the energy cost of waking the vehicle solely for confirmation purposes.
3Device complexity
If update is performed without considering battery residual amount, then the update process can be simplified, but the update information may not be capable of being normally updated due to insufficient battery residual amount
Solution Approach 1:
The vehicle sends its battery residual amount information to the data server in advance, before the update process begins. This preliminary provision of power status allows the server to assess whether the vehicle has sufficient power for the update operation, enabling simple process control while ensuring update reliability through pre-checked battery status.
Solution Approach 2:
The vehicle provides feedback about its battery residual amount to the data server, which then uses this information to determine whether to proceed with the update. This feedback mechanism maintains process simplicity by keeping the decision logic on the server side while ensuring reliability through power status verification before update execution.
Data Source
AI summary
Provided are an on-vehicle control device and an on-vehicle control device information update system that are capable of identifying a subject vehicle by a simple means, while suppressing power consumption, when on-vehicle device information is automatically updated. This on-vehicle control device receives a vehicle response request message from a data server in a power-saving mode in which only a vehicle external communication unit can operate; checks vehicle identification information and on-vehicle control device information that are subject to change and are stored in the message, and vehicle identification information and on-vehicle control device information stored in advance in the vehicle external communication unit and responds with the results to the data server.