Movable Barrier Control With Prewarning Cancellation
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Solution Overview
Problem
Existing vehicle systems automatically control garage doors based on proximity, leading to unwanted door openings or closings when the user is not intending to interact with the garage, such as when passing by or driving away.
Innovation Solution
A system that allows users to override or cancel automatic garage door changes via a remote device, using a server as an intermediary to provide prewarnings and allow users to cancel operations through an in-vehicle interface, with notification mechanisms for imminent door movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic proximity-based control is implemented, then convenience is improved, but false triggering occurs when vehicle passes by or drives away
Solution Approach 1:
The system performs preliminary actions by sending a prewarning notification to the user device before automatically changing the garage door state. This allows the user to cancel the operation if it was unintended, thereby preventing false triggering while maintaining automatic control convenience.
Solution Approach 2:
The system implements feedback by notifying the user device of the impending state change and receiving user input. This feedback loop enables the user to confirm or cancel the automatic operation, ensuring reliability by preventing false triggering while preserving the convenience of automatic control.
2Measurement precision
If prewarning notification is provided, then user control accuracy is improved, but system complexity increases
Solution Approach 1:
The system uses a server as an intermediary to manage the prewarning notification process. The server receives the automatic control request, sends a prewarning to the user device, and relays the user's response back to the garage door operator. This intermediary approach improves user control accuracy while keeping the local device complexity low.
3Measurement precision
If cancellation option is provided to user, then operational accuracy is improved, but response time increases
Solution Approach 1:
The system applies partial action by providing a limited-time cancellation window rather than requiring full user confirmation for all operations. The prewarning notification includes a timeout period during which the user can cancel if needed, but if no response is received, the automatic operation proceeds. This balances operational accuracy with response time efficiency.
Data Source
AI summary
In one respect, a method of controlling a movable barrier operator including receiving, via communication circuitry of an in-vehicle device, a wireless signal indicating communication of a state change request to the movable barrier operator, the state change request configured to cause the movable barrier operator to move a movable barrier from a first state toward a second state; presenting, via a user interface of the in-vehicle device, a notification of the communication of the state change request and an option to cancel the state change request; receiving, via the user interface of the in-vehicle device, a user input to cancel the state change request; and effecting cancelation of the state change request in response to the user interface receiving the user input to the cancel the state change operation.