X-Ray Tube Anode State Monitoring via Sensor Feedback

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Solution Overview

Problem

Current systems fail to effectively monitor and manage x-ray tube aging, leading to mechanical surface damage, spectral modifications, and reduced x-ray intensity, which can cause high repair costs, system downtime, and safety risks.

Innovation Solution

A method for monitoring x-ray tube state by receiving sensor data, processing it to identify and quantify surface damage, correlating it with usage protocols, and implementing tube-lifetime extension measures such as adapting cooling cycles and focal spot parameters to prolong tube life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the x-ray tube operates at high power for extended periods, then imaging productivity is improved, but the anode surface deteriorates due to thermal stress

Engineering Contradiction:
Improveimaging productivityVSAvoidanode surface integrity
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary monitoring of anode surface conditions using sensors to detect early signs of thermal damage. By detecting surface temperature changes and emission anomalies before critical failure occurs, the system can take preventive actions such as adjusting operating parameters or scheduling maintenance, thereby extending tube life while maintaining high productivity operation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements continuous feedback monitoring of anode surface conditions through sensors that measure temperature, emission spectrum, and other parameters. This feedback loop allows real-time adjustment of operating conditions to prevent surface deterioration while maintaining high power operation, resolving the contradiction between productivity and reliability

Inventive Principle:
Principle #23Feedback

2Duration of action of stationary object

If the anode surface is monitored continuously, then tube lifetime is extended through early damage detection, but system complexity increases

Engineering Contradiction:
Improvetube lifetimeVSAvoidmonitoring system complexity
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The system uses multi-functional sensors that serve both primary imaging functions and anode surface monitoring functions. By integrating these monitoring capabilities into existing imaging components rather than adding separate dedicated monitoring systems, the solution extends tube lifetime while minimizing the increase in system complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the x-ray tube's own emission characteristics during normal operation to monitor anode surface conditions. By analyzing the tube's self-emission spectrum and intensity variations, the system detects surface damage without requiring external test sources or additional complex measurement apparatus, thus extending tube life with minimal added complexity

Inventive Principle:
Principle #25Self-service

3Loss of substance

If surface damage is detected early, then repair costs are reduced, but measurement precision requirements increase

Engineering Contradiction:
Improverepair costsVSAvoidsurface damage detection precision
Core Design Contradiction:
Loss of substanceVSMeasurement precision

Solution Approach 1:

The system performs preliminary detection of surface damage at early stages when changes are subtle. By using sensors that continuously monitor emission spectrum and intensity during normal operation, the system detects early surface modifications before they progress to critical failure, enabling timely intervention that reduces repair costs while managing measurement precision requirements through cumulative data analysis

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

Enhances x-ray tube lifetime by minimizing aging effects, reduces repair costs, and ensures system reliability by predicting and managing surface damage through real-time monitoring and adaptive control.

Implementation Method 1

receiving sensor data from a sensor apparatus positioned to measure radiation from at least part of a surface of an anode of the x-ray tube

Methodology Applied
Scientific EffectX-ray emission: X-Ray

Data Source

PatentEP4430924B1Monitoring the state of an x-ray tube
Publication Date: 2025.06.25 KONINKLIJKE PHILIPS NV
  • EP4430924B1 patent drawingFigure 1A
  • EP4430924B1 patent drawingFigure 1B
  • EP4430924B1 patent drawingFigure 2A~2B

AI summary

Systems and methods are provided for monitoring the state of an x-ray tube (100). The method comprises: receiving sensor data from a sensor array apparatus (120) positioned to observe at least part of a surface of an anode (102) of the x-ray tube; processing the received sensor data to identify and quantify surface damage to the anode; storing the identified and quantified surface damage with a time stamp; and correlating the identified and quantified surface damage to one or more usage protocols in an operational history record of the x-ray tube and used at a time corresponding the time stamp and/or used at a time in between time stamps.