Radiation Signal Processing Device for Precise Irradiation Control

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Solution Overview

Problem

Existing radiation imaging systems face challenges in precise radiation irradiation control due to unreliable wireless communication, which can lead to overexposure when using digital signals for radiation irradiation stop control, especially when ionization chambers are involved.

Innovation Solution

A radiation signal processing device that converts digital irradiation stop advance notice signals from a radiation imaging device into analogue signals, enabling precise radiation irradiation control by integrating voltage increases over time, even with intermittent wireless communication, and allowing connection to radiation generation devices with analogue interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If digital signals are used for radiation irradiation stop control through wireless communication, then productivity is improved through automated control, but reliability deteriorates due to communication instability causing overexposure

Engineering Contradiction:

Improveautomated radiation irradiation controlVSAvoidirradiation stop control accuracy

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

An intermediary device is introduced between the radiation imaging device and the radiation generation device. This intermediary receives digital irradiation stop advance notice signals, converts them to analogue signals, and transmits them to the radiation generation device. This mediator ensures reliable signal transmission and proper signal format compatibility, resolving the reliability issue while maintaining automated control productivity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The signal format parameter is changed from digital to analogue in the intermediary device. By converting the digital irradiation stop advance notice signal to an analogue signal, the system ensures compatibility with radiation generation devices that use analogue interfaces, thereby improving reliability of the control signal transmission.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If digital signals are transmitted wirelessly for irradiation control, then device complexity is reduced through integration, but measurement precision deteriorates due to signal loss in wireless communication

Engineering Contradiction:

Improvesystem integration levelVSAvoidirradiation amount detection accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The intermediary device acts as a mediator that receives the digital signal from the radiation imaging device, converts it to an analogue signal, and transmits it to the radiation generation device. This ensures that the irradiation stop control signal maintains its precision throughout transmission, preventing signal loss that would occur with direct wireless communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces direct wireless digital signal transmission with an analogue signal transmission through an intermediary device. This substitution ensures more reliable signal transmission and prevents digital signal loss, thereby maintaining measurement precision while still achieving system integration.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If analogue signals are used for radiation generation device interface, then adaptability is improved for legacy systems, but device complexity increases due to signal conversion requirements

Engineering Contradiction:

Improvecompatibility with radiation generation devicesVSAvoidsignal conversion functionality

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The intermediary device serves as a mediator that performs signal conversion from digital to analogue format. This allows the system to maintain compatibility with legacy radiation generation devices that use analogue interfaces, thereby improving adaptability while isolating the conversion complexity to a single dedicated component.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The intermediary device provides multi-functionality by handling both signal reception from the radiation imaging device and signal transmission to the radiation generation device, while also performing format conversion. This universal approach improves system adaptability without requiring separate dedicated devices for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9674935B2Radiation signal processing device, radiation imaging system, and radiation signal processing method

Publication Date: 2017.06.06 FUJIFILM CORP

AI summary

A radiation signal processing device including: a reception section that receives as a digital signal a signal representing a detection result from a radiation imaging device that captures an image according to irradiated radiation, and that detects a radiation irradiation amount and outputs the signal representing the detection result; and a conversion section that converts the digital signal representing the detection result received by the reception section into an analog signal recognizable by a radiation irradiation device that irradiates radiation onto the radiation imaging device and stops radiation irradiation in cases in which radiation has reached a specific irradiation amount.