Pressure Sensor Input for Function Switching and Water Protection

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Solution Overview

Problem

Current digital devices with built-in G-sensors have limited functionality during movement and lack protection against water damage, leading to reduced user experience and potential device harm.

Innovation Solution

A pressure enabling apparatus comprising a pressure sensor, resistance wire, and pressure setting module that varies resistance based on strain, allowing electronic devices to change applications or functions based on pressure values, and includes a protective film for the sensor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a G-sensor is built into the mobile phone to detect movement and enable functions like gaming and camera, then the device can respond to user actions, but the functionality remains single and limited, reducing user experience

Engineering Contradiction:
ImprovefunctionalityVSAvoiduser experience
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines multiple sensing functions (G-sensor for acceleration detection and pressure sensor for pressure detection) within a single electronic device to enable diverse applications. The pressure sensor detects pressing operations on the device body, allowing functions like making calls, playing games, music playback, and document reading through different pressure levels, thereby achieving multi-functionality and enhanced user experience.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If a G-sensor is used for detecting acceleration and protecting the hard disk, then the hard disk can be protected during falling, but the device lacks protection against water damage

Engineering Contradiction:
ImproveprotectionVSAvoidwater damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent utilizes water as a triggering mechanism for protection. When the device falls into water, the pressure sensor detects the water pressure and automatically activates the floating mechanism to make the device float on the water surface, converting the harmful water immersion into a beneficial automatic protection response.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The device automatically detects water immersion through the pressure sensor and autonomously activates the floating mechanism without requiring user intervention. The control unit receives the pressure signal and automatically controls the floating mechanism to elevate the device, enabling self-protection against water damage.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If a pressure sensor is added to enable pressure-based functions, then the device can switch applications based on pressure, but the device complexity increases

Engineering Contradiction:
Improveapplication switchingVSAvoidstructure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent integrates the pressure sensor with the existing device structure, attaching it to the device body where it can detect pressing operations. The control unit that processes pressure signals is merged with the existing control architecture, allowing the pressure sensor to work in conjunction with the G-sensor and other existing components to enable multiple functions without requiring completely separate systems.

Inventive Principle:
Principle #5Merging (Combining)

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

Enhances user experience by enabling devices to switch functions (e.g., calling, gaming, music) based on pressure and provides protection against water damage by automatically floating when submerged.

Implementation Method 1

A resistance of the pressure sensor can be varied according to variation of a strain on the electronic apparatus

Methodology Applied
Scientific EffectStrain: Deformation

Implementation Method 2

The resistance wire is connected between the pressure sensor and the electronic apparatus. The pressure setting module is used for setting a pressure value corresponding to a resistance variation of the resistance wire

Methodology Applied
Scientific EffectPiezoresistive effect: Piezoresistive Effect

Implementation Method 3

the pressure sensor is attached to an outer surface of the electronic apparatus by adhesive

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 4

the pressure sensor is attached to an outer surface of the electronic apparatus by adhesive and is covered with a protective film

Methodology Applied
Scientific EffectPhysical barrier protection: Physical Containment

Data Source

PatentUS8736350B2Pressure enabling device and method and electronic apparatus containing the same
Publication Date: 2014.05.27 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • US8736350B2 patent drawing
  • US8736350B2 patent drawing
  • US8736350B2 patent drawing

AI summary

A pressure enabling apparatus includes: a pressure sensor, a resistance wire and a pressure setting module, wherein a terminal of the resistance wire is connected to the pressure sensor and another terminal thereof is connected to an electronic apparatus. The pressure setting module is provided for receiving and converting a resistance variation of the resistance wire into a pressure value. The pressure sensor is provided for varying the resistance value thereof according to an external pressure variation, wherein the resistance variation is processed and transmitted to the pressure setting module via the resistance wire. The electronic apparatus implements an application or function according to a pressure value of the pressure setting module. An electronic apparatus is also provided for implementing different applications by pressing the electronic apparatus and for setting numbers or pages when an application of music-playing or document-reading is locked.