Magnetic Detection Unit for Locking Timing Optimization

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Solution Overview

Problem

Existing locking/unlocking devices fail to accurately detect the open/closed state of doors and optimize locking/unlocking timing, leading to inefficiencies in automated locking and unlocking operations.

Innovation Solution

A locking/unlocking device comprising a magnetic detection unit that detects changes in the magnetic field based on the relative position between movable and fixed sections of an opening/closing device, a drive unit to activate the lock mechanism, and a control unit that determines the open/closed state and optimizes the locking/unlocking operation accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If automatic unlocking is performed based on user terminal approach detection, then convenience is improved, but locking/unlocking timing optimization is insufficient

Engineering Contradiction:
Improveautomatic unlocking convenienceVSAvoidlocking/unlocking timing optimization
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system continuously monitors the magnetic field to detect door open/closed state in real-time, providing feedback to the control unit. This enables the system to adjust locking/unlocking timing dynamically based on actual door status, optimizing the operation timing while maintaining automatic unlocking convenience.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces mechanical door position detection mechanisms with a magnetic field detection system. The magnetic detection unit non-contactively detects the relative position between movable and fixed sections, enabling accurate open/closed state detection without mechanical wear or complex mechanical structures.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If door open/closed state detection is not implemented, then device complexity is reduced, but detection accuracy deteriorates

Engineering Contradiction:
Improvedetection system complexityVSAvoiddoor open/closed state detection accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces complex mechanical or optical door position detection systems with a simple magnetic field detection unit. This unit accurately detects the relative position between the movable section (door) and fixed section (frame) by monitoring changes in magnetic field strength, achieving high detection accuracy with minimal device complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system detects door open/closed state by monitoring changes in magnetic field parameters (strength, direction) rather than using complex mechanical position sensors. The magnetic detection unit measures magnetic field variations caused by the relative movement between magnetic and non-magnetic sections, translating physical position changes into detectable magnetic parameter changes.

Inventive Principle:
Principle #35Parameter changes

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 accurate detection of the door's open/closed state and optimizes the locking/unlocking timing, ensuring reliable and efficient operation of the locking mechanism.

Implementation Method 1

a magnetic detection unit configured to detect a change in a magnetic field based on a change in a relative position between a movable section and a fixed section of the opening/closing device

Methodology Applied
Scientific EffectMagnetic field detection: Magnetic Field

Data Source

PatentUS11920377B2Locking/unlocking device, locking/unlocking method, and locking/unlocking system
Publication Date: 2024.03.05 SONY GROUP CORP
  • US11920377B2 patent drawing
  • US11920377B2 patent drawing
  • US11920377B2 patent drawing

AI summary

Provided is a locking/unlocking device that accurately detects an opening/closing state of an opening/closing device and optimizes timing to lock or unlock.The locking/unlocking device includes a drive unit that drives a lock mechanism of the opening/closing device, a magnetic detection unit that detects a change in a magnetic field based on a change in the relative position between a movable section and a fixed section of the opening/closing device, and a control unit that determines an open/closed state of the opening/closing device on the basis of the change in the magnetic field detected by the magnetic detection unit and activates the drive unit to lock or unlock the lock mechanism on the basis of the open/closed state.