Electric Charge Sensing for Mobile Terminal State Detection

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Solution Overview

Problem

Existing mobile terminal state detection methods are limited to detecting moving states and cannot effectively detect stationary states, as they rely on acceleration sensors, gravity sensors, and gyroscopes.

Innovation Solution

An apparatus and method utilizing an electric charge sensing element, electric charge collection circuit, and state detection module to determine the state of a mobile terminal by generating and radiating electric charge, collecting reflected charge, and calculating an induced electric charge value, which allows for the detection of stationary states by identifying materials and distances through a correspondence table.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If acceleration sensors, gravity sensors, and gyroscopes are used for state detection, then moving states can be detected, but stationary states cannot be detected

Engineering Contradiction:

Improvestate detection capabilityVSAvoiddetection scope

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces mechanical sensing systems (acceleration sensors, gravity sensors, gyroscopes) with an electromagnetic field-based detection system. The electric charge sensing element emits electromagnetic signals that interact with objects in the environment, enabling detection of both moving and stationary states through electromagnetic field interactions rather than mechanical motion sensing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the detection parameter from mechanical motion parameters (acceleration, gravity, rotation) to electromagnetic field parameters (electric charge, reflected charge). This parameter transformation allows the system to detect stationary objects and states that were previously invisible to mechanical sensors, expanding the detection scope while maintaining reliability.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If electric charge sensing elements are used to detect stationary states, then detection scope is expanded, but device complexity increases

Engineering Contradiction:

Improvedetection scopeVSAvoidsystem structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent makes the electric charge sensing element serve multiple functions: it acts as both the signal source (emitting electromagnetic fields) and the sensor (detecting reflected charge). This multi-functionality reduces the need for separate transmitter and receiver components, thereby expanding detection scope while controlling system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the electric charge generation function and the sensing function into a single integrated component (the electric charge sensing element). By merging these functions, the system achieves expanded detection capability without proportionally increasing complexity, as one component performs multiple roles in the detection process.

Inventive Principle:

Principle #5Merging (Combining)

3Measurement precision

If material identification through correspondence tables is implemented, then detection precision is improved, but processing time increases

Engineering Contradiction:

Improvematerial identification accuracyVSAvoidprocessing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent pre-establishes correspondence tables that map electric charge characteristics to material types before actual detection occurs. This preliminary preparation of reference data allows for rapid material identification during operation, as the system only needs to compare measured values against pre-computed tables rather than performing complex real-time analysis, thus improving precision while minimizing processing time.

Inventive Principle:

Principle #10Preliminary action

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 the detection of stationary terminal states, providing real-time information on safe placement, orientation, and material identification, enhancing intelligent applications and protection features.

Implementation Method 1

the electric charge sensing element is configured to radiate electric charge generated by the electric charge collection circuit, and transmit reflected electric charge to the electric charge collection circuit

Methodology Applied

Scientific EffectElectric charge radiation and reflection: Reflection

Data Source

PatentEP3748938B1State detection apparatus and method

Publication Date: 2023.06.14 ZTE CORP

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AI summary

Disclosed are a state detection apparatus and method. The state detection apparatus comprises: one or more charge sensing elements provided on a terminal, a charge collection circuit connected to the charge sensing element, and a state detection module connected to the charge collection circuit, wherein the charge collection circuit generates charges which are radiated by the charge sensing element, collects charges reflected back on each charge sensing element to generate a sensed charge value of the charge sensing element, and outputs the sensed charge value of each charge sensing element to the state detection module; and the state detection module determines the state of the terminal according to the sensed charge value.