Magnetically Conductive Body Enhancing Sensor Detection in Mobile Devices
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Solution Overview
Problem
The challenge in designing mobile wireless communications devices is to incorporate additional functionality while maintaining operational stability within limited space, particularly in ensuring effective detection of housing movement for power state switching.
Innovation Solution
Incorporating a magnetically conductive body between a magnetic sensor and a magnet, which are laterally offset, to enhance the magnetic field and improve detection sensitivity between the device's housings, allowing for selective enabling of wireless transceiver circuitry based on housing position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the magnetic sensor and magnet are positioned close together for sensitive detection, then detection sensitivity is improved, but device volume increases due to component layout constraints
Solution Approach 1:
A magnetically conductive body is introduced as an intermediary component between the magnet and magnetic sensor. This mediator enhances the magnetic field coupling between the offset magnet and sensor, enabling sensitive detection despite the increased distance and lateral offset required by compact device geometry. The magnetically conductive body concentrates and directs magnetic flux, effectively bridging the spatial gap between components.
2Adaptability or versatility
If additional functionality is incorporated into the device, then device versatility is improved, but component layout complexity increases within limited space
Solution Approach 1:
The magnetically conductive body serves multiple functions simultaneously: it enhances magnetic field coupling for detection sensitivity, acts as a structural element in the housing assembly, and enables compact component placement. This multi-functionality reduces the need for separate dedicated components, simplifying the overall component layout while maintaining enhanced detection capabilities and additional device functionality.
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 ensures improved detection sensitivity and reduced costs associated with component layout redesign, enabling efficient power state switching and maintaining device functionality within compact dimensions.
Implementation Method 1
a magnetically conductive body operatively coupled between the magnetic sensor and the magnet when the first and second housings are in the first position
Implementation Method 2
The magnetically conductive body may include a magnetically conductive body having a permeability greater than 8×10−4 H/m
Data Source
AI summary
A mobile wireless communications device may include first and second housings coupled together and moveable between first and second positions. The mobile wireless communications device may also include wireless transceiver circuitry carried by at least one of the first and second housings, a magnetic sensor carried by the first housing and coupled to the wireless transceiver circuitry, and a magnet carried by the second housing. The mobile wireless communications device may also include a magnetically conductive body operatively coupled between the magnetic sensor and the magnet when the first and second housings are in the first position.