X-ray Optical Connector Pin Timing for Motor Control
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Solution Overview
Problem
Conventional X-ray analyzers face issues with interrupting the power supply when replacing X-ray optical component units, leading to unintended shifts in component positions due to counter-electromotive force and potential damage from surge currents, especially when motors are involved.
Innovation Solution
The X-ray optical component device employs a connector with distinct signal and motor pins/terminals, where the signal pin disconnects before the motor pin, allowing controlled power shutdown to prevent unwanted motor activity, using a motor controller to sense detachment and stop power via a transistor circuit, and incorporates an eccentric cam mechanism for precise position maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If all pins and terminals in the connector are of equal length with distal ends at the same position, then the connector structure is simple and easy to manufacture, but when the connector is detached while the motor is controlled to a stationary state, counter-electromotive force and surge current cause the motor output shaft to rotate unintentionally and may damage the control circuit
Solution Approach 1:
The connector pins are segmented into two groups with different lengths: signal pins (longer) and motor pins (shorter). This segmentation allows the signal connection to be established or disconnected before the motor power connection, enabling the control circuit to detect connector status and stop motor power supply in advance, thus preventing counter-electromotive force and surge current damage while maintaining manufacturing feasibility
Solution Approach 2:
The longer signal pins make contact earlier than the shorter motor pins during connector insertion, and disconnect earlier during removal. This preliminary action allows the control circuit to detect connector connection status through the signal pins and stop motor power supply before the motor pins disconnect, preventing harmful electrical phenomena while maintaining a relatively simple connector structure
2Adaptability or versatility
If the connector is detached to replace the X-ray optical component unit, then component replacement is enabled, but the power supply must be interrupted causing unintended shifts in component positions and potential circuit damage
Solution Approach 1:
The connector is segmented into signal pins and motor pins of different lengths, allowing selective disconnection timing. The signal pins disconnect first to alert the control circuit, enabling hot-swapping capability for component replacement while the motor power supply is already stopped, preventing positional shifts and circuit damage during the replacement process
Solution Approach 2:
The signal pins act as an intermediary between the connector and control circuit, providing early notification of connector detachment. This intermediary mechanism enables the control circuit to stop motor power supply in advance, allowing safe component replacement without interrupting the overall power supply to the X-ray analyzer
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
This solution enables seamless replacement of X-ray optical component units without power interruption, preventing positional shifts and circuit damage, ensuring accurate measurements and extending component lifespan.
Implementation Method 1
when the connector is detached in a state in which the motor is being controlled to a stationary state, a problem occurs whereby a counter-electromotive force and a surge current (i.e., a current that fluctuates sharply in a short time) cause an output shaft of the motor to rotate
Data Source
AI summary
An X-ray optical component device having an X-ray optical component unit, a motor controller, and a connector. The connector has motor pins and motor terminals electrically connected to a motor when engaged with each other, and a signal pin and signal terminal for sensing detachment of the connector, the signal pin and signal terminal being capable of engaging with each other. A pin-side connector and a terminal-side connector are detachable. When the pin-side connector is detached from the terminal-side connector, the time that the signal pin is removed from the signal terminal is earlier than the time that the motor pins are removed from the motor terminals. During replacement of an X-ray optical component unit equipped with a motor for adjusting the position of an X-ray optical component, unwanted movement of the position of the X-ray optical component provided in the unit is prevented.