Photoelectric Grounding Detection for Fast Component Mounting
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Solution Overview
Problem
Conventional electronic component mounters face false grounding detection due to chattering noises, leading to delayed detection of actual grounding, as they require a dead region next to the detection area to avoid false positives, which prevents prompt detection even when an electronic component is grounded.
Innovation Solution
A photoelectric sensor system with a detection target portion initially positioned in an ungrounded state within the detection region, allowing for immediate light shielding and eliminating the need for a dead region, enabling quick grounding detection by the electronic component mounter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dead region is secured next to the detection region to avoid false detection, then false detection is prevented, but grounding detection time is delayed
Solution Approach 1:
The detection target portion is preliminarily positioned within the detection region in the ungrounded state, before grounding occurs. This preliminary positioning allows the sensor to be ready to detect grounding immediately when it happens, eliminating the need for a dead region and the associated detection delay.
2Speed
If the detection target portion is positioned within the detection region in the ungrounded state, then grounding detection speed is improved, but false detection risk increases
Solution Approach 1:
The control device receives sensor output signals and discriminates between grounded and ungrounded states based on these signals. The feedback mechanism allows the system to distinguish true grounding events from false signals caused by chattering noises, maintaining detection accuracy while enabling immediate detection.
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 allows for prompt and accurate detection of grounding without the need for a dead region, reducing false positives and minimizing the time lag between the actual grounding and detection, thus enhancing the efficiency of the electronic component mounting process.
Implementation Method 1
a photoelectric sensor configured to emit light to a detection region in which a detection target portion moves in conjunction with grounding of an electronic component to a board, and receives the light from the detection region
Data Source
AI summary
A grounding includes a photoelectric sensor that emits light to a detection region in which the detection target portion moves in conjunction with the grounding of the electronic component to a board and receives light from the detection region, and a grounding discrimination section that discriminates between the presence or absence of the grounding based on a signal from the photoelectric sensor. The detection target portion is disposed in the detection region in the ungrounded state.