Mammography Plate Sensor Unit for Dynamic Arm Frame Speed Control
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Solution Overview
Problem
Conventional mammography devices operate at constant arm frame speeds regardless of the presence of a target person, leading to potential safety accidents during positioning and adjustment processes.
Innovation Solution
Incorporating a sensor unit in front of the mammography plate to detect the presence of a target person and adjust the rotation and vertical movement speeds of the arm frame, reducing the risk of accidents by slowing down operations when a person is present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the arm frame operates at constant speed regardless of target person presence, then productivity is improved, but safety and reliability deteriorate due to potential injury during positioning
Solution Approach 1:
The arm frame speed is made dynamic rather than constant. The control unit adjusts the rotation and vertical movement speeds based on real-time detection of target person presence by the sensor unit. When a target person is detected, the speed is automatically reduced to a safe level; when no target person is present, the speed returns to normal operational level, thus resolving the contradiction between productivity and safety.
2Reliability
If the arm frame speed is reduced when target person is present, then safety is improved, but productivity deteriorates due to slower operation
Solution Approach 1:
The system implements periodic sensing and speed adjustment cycles. The sensor unit continuously detects target person presence, and the control unit periodically adjusts the arm frame speed accordingly. This periodic action ensures safety is maintained during critical moments when a target person is present, while allowing full productivity during periods when no target person is detected, thus resolving the contradiction between safety and productivity.
3Measurement precision
If multiple sensors are placed on the mammography plate front side, then detection precision is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into multiple independent sensors placed at different positions on the front side of the mammography plate. Each sensor independently detects target person presence, and the control unit processes signals from multiple sensors to improve detection accuracy. This segmentation approach enhances measurement precision while keeping each sensor unit relatively simple, thus resolving the contradiction between detection accuracy and device complexity.
Data Source
AI summary
Disclosed is a mammography device capable of recognizing a target person, the mammography device including: a body unit; an arm frame connected to the body unit, and rotating in a clockwise or counterclockwise direction; an X-ray generator placed at a top of the arm frame, and emitting X-rays; a mammography plate provided at a position corresponding to the X-ray generator, and obtaining an X-ray image of a breast of a target person; a compression unit placed between the X-ray generator and the mammography plate, and moving vertically to compress a target part; a sensor unit placed inside the mammography plate, and detecting whether the target person is present; and a control unit controlling an operation of the arm frame on the basis of whether the target person is detected by the sensor unit. Accordingly, a safety accident that may occur in a mammography process using the mammography device is reduced.