Projection Module Cover State Sensor Control
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Solution Overview
Problem
Existing projection devices lack an efficient method for automatically controlling the activation and deactivation of the projection mode based on the opening and closing of a cover, leading to cumbersome user interactions and reduced usability.
Innovation Solution
A projection device equipped with a state sensor and a controller that utilizes a magnetic field generated by a magnetic substance on the cover to detect the open or closed state, automatically turning the projection module on or off, thereby simplifying the execution and termination of the projection mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control is used to activate/deactivate projection mode, then user control precision is improved, but operation complexity and time consumption increase
Solution Approach 1:
The system automatically detects the cover state through the state sensor and autonomously activates or deactivates the projection module without requiring user intervention. The controller monitors the detection signal from the state sensor and automatically controls the projection module's power state, enabling the system to serve itself rather than requiring manual user control.
Solution Approach 2:
The patent replaces manual mechanical control with an automated sensor-based control system. The state sensor detects the cover's open/closed state and converts this mechanical state into an electrical detection signal, which the controller then processes to automatically control the projection module, substituting manual mechanical operation with an automated electromechanical system.
2Ease of operation
If automatic control based on cover state is implemented, then operation simplicity is improved, but device complexity increases
Solution Approach 1:
The state sensor serves multiple functions: it detects the cover's open/closed state, generates detection signals for the controller, and indirectly controls the projection module's operation. This multi-functional component reduces the need for separate dedicated components for each function, thereby limiting the increase in overall device complexity while achieving automatic control.
Solution Approach 2:
The state sensor acts as an intermediary between the mechanical cover state and the electrical control system. It converts the physical state of the cover into an electrical detection signal that the controller can process, serving as a bridge that simplifies the control mechanism without requiring direct complex interaction between the cover and the projection module control circuitry.
3Reliability
If projection module remains on continuously, then availability is improved, but energy consumption increases
Solution Approach 1:
The projection module's power state is dynamically adjusted based on the cover's real-time state. When the cover is closed, the projection module is automatically turned off to save energy. When the cover is opened, the projection module is automatically activated to maintain availability. This dynamic state adjustment optimizes both energy consumption and system availability according to actual usage conditions.
Solution Approach 2:
The controller receives continuous feedback from the state sensor about the cover's state and automatically adjusts the projection module's power state accordingly. This feedback mechanism ensures the projection module is on only when needed (when cover is open) and off when not needed (when cover is closed), optimizing energy consumption while maintaining high availability when required.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances usability and convenience by minimizing manual interventions required to activate or deactivate the projection mode, providing an optimal control environment for seamless operation.
Implementation Method 1
A projection device equipped with a state sensor and a controller that utilizes a magnetic field generated by a magnetic substance on the cover to detect the open or closed state
Data Source
AI summary
A projection device capable of automatically controlling on/off of a projection module for projecting display data onto an exterior surface according to an open/closed state of a cover of the projection module, and an operation method thereof are provided. The method for operating a projection module in a projection device includes turning-on the projection module when a first detection signal is detected, wherein the first detection signal is generated when a cover of the projection module is open, and after the projection module is turned on, turning-off the projection module when a second detection signal is detected, wherein the second detection signal is generated when a cover of the projection module is closed.