Capacitive Grip Detection for Hand-Held Device Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand-held devices often remain in active mode when not in use due to cumbersome manual activation or deactivation of sleep mode, leading to inefficient energy consumption and reduced battery life.
Innovation Solution
An electrical hand-held device equipped with a detection system using transmitting and receiving electrodes that emit and couple an alternating electric field, allowing the device to automatically switch between sleep and active modes based on grip detection, eliminating the need for manual buttons and enhancing energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual switches or buttons are provided for mode activation, then the device can be switched between sleep and active modes, but the operation becomes cumbersome and users often forget to switch modes
Solution Approach 1:
The device automatically detects hand grip through capacitive sensing and switches between sleep and active modes without requiring manual button presses. The system serves itself by monitoring its own operational state and making mode transitions autonomously based on detected user presence.
Solution Approach 2:
The patent replaces mechanical buttons and switches with a capacitive sensing system that detects hand grip through electrical field changes. This substitution eliminates the need for physical mode-switching components while enabling automatic operation.
2Ease of operation
If the device remains in active mode to ensure immediate responsiveness, then user experience is improved, but energy consumption increases and battery life decreases
Solution Approach 1:
The device dynamically adjusts its operational mode based on real-time detection of hand grip. When a hand is detected, the device transitions to active mode for immediate responsiveness; when no hand is present, it enters sleep mode to conserve energy. This dynamic adaptation resolves the contradiction between responsiveness and energy consumption.
Solution Approach 2:
The capacitive sensing system provides continuous feedback about user presence, enabling the device to automatically transition between sleep and active modes. This feedback mechanism ensures the device is responsive when needed while minimizing energy consumption during non-use periods.
3Use of energy by moving object
If the device switches to sleep mode to save energy, then power consumption is reduced, but the device requires manual activation which reduces ease of use
Solution Approach 1:
The device automatically transitions from sleep to active mode upon detecting hand grip through capacitive sensing. This self-service capability eliminates the need for manual button presses to activate the device while maintaining energy-saving sleep mode during non-use, thereby resolving the contradiction between energy consumption and ease of activation.
4Device complexity
If manual buttons are eliminated for mode switching, then design freedom is improved and device simplicity increases, but automatic detection mechanism must be implemented
Solution Approach 1:
The patent replaces manual buttons with capacitive sensing electrodes that detect hand grip through changes in electrical field coupling. This substitution eliminates mechanical components for mode switching while implementing an automatic detection mechanism that is simpler to integrate than previously attempted solutions.
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
The solution enables reliable detection of device grip, reducing energy consumption, simplifying usage, and allowing for creative design freedom by eliminating the need for manual mode activation, thereby improving energy efficiency and user experience.
Implementation Method 1
at least one transmitting electrode, from which an alternating electric field can be emitted
Implementation Method 2
a first portion of the from the transmitting electrode emitted alternating electric field is coupled into the receiving electrode via the hand
Data Source
Figure 1~3
Figure 4~5
Figure 6~8
AI summary
The invention relates to a device for an electric hand-held device for detecting the hand-held device being clasped by a hand, comprising at least one transmitting electrode, which can emit an alternating electric field, and at least one receiving electrode, in which the alternating electric field can be coupled at least partially, wherein the at least one transmitting electrode and the at least one receiving electrode can be arranged on the hand-held device such that each of them is at least partially covered by the hand when the hand-held device is being clasped by the hand, wherein when the hand-held device is being clasped by the hand, a first portion of the alternating electric field emitted by the transmitting electrode can be coupled via the hand into the receiving electrode, wherein at least the first portion of the alternating electric field is a characteristic representative of the hand-held device being clasped by the hand. The invention further relates to a method for detecting the hand-held device being clasped by a hand and to a method for producing a hand-held device comprising a detection unit according to the invention.