Vehicle Data Saving Control Before Ignition Turn-On
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Solution Overview
Problem
Conventional data saving methods in vehicles prolong activation time due to data being saved in temporary storage areas even when the ignition is turned on, leading to increased load and difficulty in meeting activation time conditions.
Innovation Solution
A data saving method that detects a predetermined sign, such as completion of a charge process, vehicle speed, shift position, or door opening, to stop the data saving process before ignition power is turned on, reducing the load on vehicle activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is saved in a temporary storage area during vehicle activation, then data protection is improved, but activation time is prolonged
Solution Approach 1:
The system performs data saving in advance during periods when the vehicle is not activated (when ignition is off). By completing data protection operations before the vehicle activation process begins, the system ensures data is protected without adding load to the activation sequence, thus resolving the contradiction between data protection and activation time.
2Reliability
If data saving process continues during ignition turn-on, then data protection is improved, but activation load is increased
Solution Approach 1:
The control unit monitors ignition status and completes data saving operations before the ignition switch is turned on. By executing the data protection function in advance rather than concurrently with ignition activation, the system reduces the activation load while maintaining data protection integrity.
3Reliability
If data is saved in temporary storage area, then data safety is improved, but activation process complexity is increased
Solution Approach 1:
The system executes data saving operations during the period before ignition is activated, using the control unit to monitor ignition status and complete the save process in advance. This timing strategy simplifies the activation process by eliminating the need to manage temporary storage operations during ignition, while still ensuring data safety through prior completion of save operations.
Data Source
AI summary
A data saving method includes: detecting a predetermined sign of turning on of an ignition power supply in a vehicle performing a saving process of saving data in a storage apparatus; and stopping the saving process before the turning on of the ignition power supply when the predetermined sign is detected.