Remote Vehicle Air Conditioning with Delayed Shift Check
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Solution Overview
Problem
In conventional vehicles, there is a delay in detecting the shift position after starting the system, which can lead to immediate prohibition of remote air conditioning, reducing convenience for users.
Innovation Solution
The vehicle includes a control device that turns on the remote air conditioning request signal after starting the system and executes remote air conditioning if the recognized shift is a parking position. If the shift is not a parking position, the control device suspends the prohibition of remote air conditioning for a predetermined time before determining it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system waits for shift position detection before allowing remote air conditioning, then the accuracy of shift position recognition is improved, but the response time and user convenience deteriorate
Solution Approach 1:
The control device performs preliminary actions by starting the system and turning on the remote air conditioning request signal before the shift position detection is complete. This allows the air conditioning to be prepared and activated without waiting for the detection process to finish, thereby reducing the overall response time while maintaining detection accuracy through subsequent verification.
2Reliability
If the system immediately prohibits remote air conditioning when shift position is not detected as parking, then the reliability of the prohibition logic is improved, but the user convenience and system flexibility deteriorate
Solution Approach 1:
The control device dynamically adjusts the prohibition decision based on the elapsed time since system start. Instead of applying a static prohibition rule, the system waits for a predetermined time period before determining prohibition, allowing flexibility in cases where detection may be delayed. This dynamic approach maintains reliability by still enforcing prohibition when appropriate while improving ease of operation by avoiding premature prohibitions.
3Device complexity
If the system uses wall contact control without absolute angle sensor for shift position detection, then the device complexity is reduced, but the detection time and reliability deteriorate
Solution Approach 1:
The system performs preliminary detection using wall contact control methods that do not require complex absolute angle sensors. By implementing this simpler detection method in advance and allowing sufficient time for detection completion, the system reduces device complexity while managing detection time through proper timing control and waiting periods before making prohibition decisions.
Data Source
AI summary
When a vehicle receives a remote air conditioning request from user equipment with a system of the vehicle stopped, the vehicle turns on a remote air conditioning request signal after starting the system, and executes remote air conditioning in which the air conditioner is operated with the engine in operation, on the condition that a recognized shift that is a recognized shift position is a parking position. When the recognized shift is not the parking position, the prohibition of the remote air conditioning is suspended when the elapsed time from the system start is less than the predetermined time, and the prohibition of the remote air conditioning is determined when the elapsed time is equal to or more than the predetermined time.