Hinge Magnet Sensor Orthogonal Detection
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Solution Overview
Problem
Existing electronic devices with movable display units face difficulties in intuitively understanding and designing the desired detection angle for opening and closing, often requiring redesign and increased size to achieve the desired detection angle.
Innovation Solution
The implementation of a two-axis rotation mechanism with magnetic field generating means and two magnetic sensors, where the sensors detect magnetic fields in orthogonal directions, allowing for intuitive detection of the display unit's opening and closing without increasing the device's size, enabling easy design of the detection angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic sensor is used to detect the opening and closing of the display unit, then the space is saved and non-contact reliability is improved, but it becomes difficult to intuitively understand how the desired detection angle is obtained and redesign is necessary
Solution Approach 1:
The patent introduces a second magnetic sensor that detects magnetic fields in a direction orthogonal to the first sensor, adding a dimensional aspect to the detection system. This two-axis detection approach enables intuitive understanding of detection angles by providing separate signals for different rotational dimensions, eliminating the need for complex simulations while maintaining non-contact reliability
Solution Approach 2:
The patent uses magnetic field generating means as an intermediary between the display unit's mechanical movement and the detection system. By placing magnets on the movable unit and using magnetic sensors on the body unit, the system achieves non-contact detection while the magnetic field serves as a mediator that provides intuitive angular information through orthogonal sensor arrangements
2Adaptability or versatility
If the detection angle of the display unit is increased, then the detection range is improved, but the outer size of the device must be increased
Solution Approach 1:
The patent achieves expanded detection range without increasing device size by introducing orthogonal detection axes. The two magnetic sensors arranged at right angles enable the system to detect movements in multiple dimensions simultaneously, effectively increasing the usable detection angle range while maintaining a compact form factor
Solution Approach 2:
The patent changes the detection parameters by using orthogonal sensor arrangements and two-axis rotation detection. This parameter change enables the system to achieve broader detection coverage through mathematical combination of orthogonal sensor signals rather than physically expanding the device dimensions
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
Enables magnetic detection of the display unit's opening and closing without size increase, facilitating intuitive design of the detection angle and maintaining the device's compactness.
Implementation Method 1
a magnetic field generating means disposed in the movable unit; a first magnetic sensor, which is disposed in the body unit, detects a magnetic field generated by the magnetic field generating means
Data Source
AI summary
An imaging apparatus includes a movable unit in which a display unit is rotatable by a hinge part in an opening and closing direction with respect to a device body. A magnet is disposed in the vicinity of the hinge part and an opening and closing sensor detects the opening and closing of the movable unit by detecting a magnetic field of the magnet. A magnetizing direction of the magnet is a direction perpendicular to an opening and closing axis of the movable unit, the opening and closing sensor detects the magnetic field in a direction perpendicular to the opening and closing axis, and a control unit obtains a detection signal of the opening and closing sensor and controls a display state of the display unit.