In-Vehicle Push Communication for Pre-Activating ECUs
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Solution Overview
Problem
The activation time of onboard electronic control units (ECUs) can be prolonged, leading to delayed transmission of push data and reduced serviceability and marketability in remote request services.
Innovation Solution
The onboard communication device and push server are configured to immediately initiate the activation process of the ECU upon receiving an activation start instruction from the application server, ensuring timely activation of the ECU to receive push data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the onboard communication device causes the onboard ECU to start the activation process upon receiving push data transmitted from the push server, then the push data transmission can be completed, but the onboard ECU may not be activated at the timing when the push data is transmitted, leading to delayed service response
Solution Approach 1:
The system transmits an activation start instruction from the application server to the push server, which then forwards it to the onboard communication device before the push data transmission. This preliminary action ensures the ECU activation process starts in advance, so the ECU is ready to receive and process the push data immediately when it arrives, eliminating delays caused by activation timing issues.
2Productivity
If the activation process of the onboard ECU is started immediately upon application startup, then the serviceability is improved, but the activation time required may become prolonged due to ECU configuration and functional arrangement
Solution Approach 1:
The activation start instruction is sent in advance from the application server through the push server to the onboard communication device, initiating the ECU activation process before the actual push data transmission occurs. This allows the system to prepare the ECU for data reception without compromising the overall service response speed, as the activation and data transmission are coordinated through the communication device.
3Speed
If the push data is transmitted immediately when the application server sends a transmission request, then the data transmission speed is improved, but the onboard ECU may not be activated yet, reducing the reliability of data delivery
Solution Approach 1:
The onboard communication device serves as an intermediary between the push server and the onboard ECU. It receives both the activation start instruction and the push data from the push server, coordinates their transmission timing, and ensures the ECU is activated before delivering the data. This intermediary role maintains fast data transmission while ensuring reliable delivery by managing the activation-data timing coordination.
Data Source
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AI summary
Upon receiving push data from a push server (3) as a result of the push server (3) receiving a push data transmission request from an application server (2), an onboard communication device (4) transmits the received push data to an onboard ECU (5). The onboard communication device is provided with an activation control unit (4a) that causes an onboard electronic control device, to which the push data is to be transmitted, to start an activation process when the onboard communication device is notified of an activation start instruction from the push server as a result of the push server being notified of the activation start instruction from the application server immediately after startup of a cloud side application.