Portable Device Stasis Circuit for Bluetooth Power Reduction

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Solution Overview

Problem

In communication systems with two-way wireless communication, the increased power consumption of portable devices due to continuous monitoring and data transmission reduces battery life and affects marketability, especially when using Bluetooth Low Energy, which requires periodic data transmission even when not connected.

Innovation Solution

A portable communication device with a stasis/movement determining circuit that converts positional changes into electric signals to determine if the device is stationary or moving, allowing the two-way communication circuit to be suspended when stationary, and activated when moving, thereby reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two-way communication is implemented in portable communication devices, then communication functionality and data transmission capability are improved, but power consumption increases and battery life decreases

Engineering Contradiction:

Improvecommunication functionalityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the communication circuit's operational state changeable based on movement detection. The circuit transitions between active and suspended states dynamically, allowing the system to adapt its power consumption characteristics to actual usage conditions while maintaining communication functionality when needed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements self-service through the movement detection circuit that automatically triggers communication circuit suspension or activation based on detected movement patterns. The system monitors its own operational context and autonomously adjusts its power consumption without requiring manual user intervention, thereby extending battery life while preserving communication capabilities.

Inventive Principle:

Principle #25Self-service

2Reliability

If continuous monitoring and data transmission are performed, then communication reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies periodic action by using intermittent movement detection to control communication circuit operation. Instead of continuous monitoring, the system periodically checks for movement and activates or suspends communication accordingly, reducing power consumption while maintaining communication reliability when actual movement occurs.

Inventive Principle:

Principle #19Periodic action

3Reliability

If Bluetooth Low Energy periodic transmission is implemented, then connection maintenance is improved, but power consumption increases and battery life decreases

Engineering Contradiction:

Improveconnection maintenanceVSAvoidbattery life

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies dynamics by making the Bluetooth Low Energy transmission state changeable based on movement detection. The periodic transmission is suspended during stationary periods and activated when movement is detected, allowing connection maintenance when needed while extending battery life during periods when communication is less critical.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements self-service by automatically adjusting its transmission behavior based on detected movement patterns. The movement detection circuit triggers suspension or activation of Bluetooth transmissions autonomously, maintaining connection reliability when movement occurs while preserving battery life during stationary periods without requiring manual user control.

Inventive Principle:

Principle #25Self-service

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 approach significantly reduces power consumption without impairing convenience, extending battery life and improving marketability by only activating the two-way communication circuit when necessary.

Implementation Method 1

a stasis/movement determining circuit configured to convert a change in position of the portable communication device into an electric signal

Methodology Applied

Scientific EffectPositional change conversion: Accelerometer

Data Source

PatentUS10210687B2Portable communication device and communication system

Publication Date: 2019.02.19 MITSUBISHI ELECTRIC MOBILITY CORP

AI summary

In a two-way communication system made up of a portable communication device and a fixed communication device, the portable communication device includes a stasis/movement determining circuit configured to convert a change in position of the portable communication device into an electric signal, and to determine from the electric signal whether the portable communication device is in a moving state or a stationary state in which the portable communication device does not move for a set length of time. The communication system performs control in which a two-way communication circuit is suspended when the stationary state is detected and the portable communication device is outside the range of communication to and from the fixed communication device, and is activated when the moving state of the portable communication device is detected while the two-way communication circuit is suspended.