Portable X-ray Console Wireless AP Selection Stability

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Solution Overview

Problem

Existing portable radiation imaging systems face challenges in maintaining stable wireless communication during ward rounds, leading to failures in receiving additional imaging orders due to inaccurate detection of access point field intensities and interference from increasing mobile wireless terminals, resulting in burdens on radiologic technologists.

Innovation Solution

A portable radiation imaging apparatus equipped with a wireless communication section, trigger signal obtaining section, connection determining section, switching section, and delivery requesting section, which determines the appropriate access point based on field intensity while stationary and maintains connection to ensure stable communication, transmitting delivery requests at regular intervals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the portable radiation imaging apparatus continuously moves during ward rounds, then imaging coverage is expanded, but wireless communication stability deteriorates due to inaccurate access point field intensity detection

Engineering Contradiction:

Improveimaging coverageVSAvoidwireless communication stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs access point determination and connection switching in advance before imaging operations begin. The trigger signal obtaining section captures field intensity data when the apparatus is stationary, and the connection determining section pre-selects the appropriate access point before movement occurs, ensuring communication stability is established beforehand rather than maintained during movement.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the determination timing of access points based on the operational state of the portable radiation imaging apparatus. When stationary, the system performs comprehensive field intensity detection and access point selection. When moving, the system maintains the previously determined connection, creating a dynamic adaptation between communication determination timing and apparatus movement state.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If wireless communication is used for accessing imaging orders during ward rounds, then operational flexibility is improved, but communication reliability deteriorates due to interference from mobile wireless terminals

Engineering Contradiction:

Improveoperational flexibilityVSAvoidcommunication reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system replaces continuous real-time wireless communication with a trigger-based communication mechanism. Instead of maintaining constant wireless connections during movement, the system uses trigger signals to initiate communication only when needed (when stationary), reducing interference from mobile terminals while maintaining operational flexibility through on-demand access.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system implements feedback through the trigger signal obtaining section that monitors the operational state of the portable radiation imaging apparatus. When the apparatus becomes stationary, the trigger signal initiates a feedback loop where the connection determining section re-evaluates access point field intensities and updates the connection accordingly, ensuring communication reliability is maintained through continuous state-aware adjustment.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If access point connection is determined continuously during movement, then communication adaptability is improved, but detection accuracy deteriorates due to motion interference

Engineering Contradiction:

Improvecommunication adaptabilityVSAvoidfield intensity detection accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system performs field intensity detection and access point determination periodically at specific moments when the portable radiation imaging apparatus is stationary, rather than continuously during movement. The trigger signal obtaining section activates at these periodic stationary intervals, allowing accurate field intensity measurement without motion interference, while the connection determining section uses these periodic results to maintain communication adaptability during movement phases.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS9204855B2Portable radiation imaging apparatus and portable radiation imaging system

Publication Date: 2015.12.08 FUJIFILM CORP

AI summary

A portable X-ray imaging apparatus has an electronic cassette and a console capable of receiving an imaging order. The console has a wireless communication section, a trigger signal obtaining section, a connection determining section, a switching section, and a delivery requesting section. The wireless communication section receives radio waves and connects itself to an access point (AP). The trigger signal obtaining section obtains a trigger signal while the mobile radiography unit stands still. At the time of obtaining the trigger signal, the connection determining section determines one of the APs as an appropriate AP based on field intensity. The switching section switches the connection to the appropriate AP. Then, the delivery requesting section transmits a delivery request for the imaging order.