X-ray Imager Obstacle Avoidance via Sensor Feedback
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Solution Overview
Problem
Operators of X-ray imaging apparatuses face difficulties in moving the imager when they cannot reach the handle or are in a position where it is hard to hold it, leading to increased examination time due to the need to relocate to access the handle.
Innovation Solution
An X-ray imaging apparatus with a drive unit, sensors, and a permission button that allows the operator to move the imager away from obstacles even when they cannot reach the handle, by detecting obstacles and reversing direction upon sensor activation, reducing unintended movement and simplifying operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator uses the handle to move the imager, then the imager can be moved with assistance from the power assist mechanism, but the operator cannot reach or hold the handle when positioned at certain locations during examination
Solution Approach 1:
The patent introduces a sensor as an intermediary between the operator and the imager movement control. The sensor detects obstacles and automatically triggers the drive unit to move the imager, eliminating the need for the operator to physically reach the handle. This intermediary system enables operation from any position while maintaining safety through automatic obstacle detection and response.
2Ease of operation
If the operator moves to a position where the handle is accessible, then the operator can hold and manipulate the handle, but the examination time increases due to relocation
Solution Approach 1:
The patent implements self-service functionality where the imager system autonomously detects obstacles via the sensor and executes movement commands without requiring operator intervention at the handle. The drive unit automatically moves the imager away from detected obstacles, enabling the operator to remain at any position during examination without time loss from relocation.
3Adaptability or versatility
If the imager is moved using only the sensor, then the operator can move the imager from any position, but unintended movement may occur without operator intention
Solution Approach 1:
The patent incorporates a permission button as a feedback mechanism that requires explicit operator authorization before the sensor-triggered movement is executed. The control unit checks for permission button activation before initiating imager movement, ensuring that automatic movement only occurs when the operator intentionally permits it. This feedback loop maintains control precision while preserving position independence.
Data Source
AI summary
An X-ray imaging apparatus includes a drive unit configured to move an imager in a direction opposite to a side on which an obstacle is detected by a sensor when an operator causes the sensor to react while operating a permission button.