Photoelectric Sensor Indicator Layout for All-Angle Visibility
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Solution Overview
Problem
Existing photoelectric sensors have limitations in installation position or orientation due to the visibility of indicator lamps, which may be invisible depending on the sensor's installment position.
Innovation Solution
A photoelectric sensor design featuring a housing with indicator lamps on both the top and bottom surfaces, allowing the lamps to be easily visible in any direction, and enabling redundant indication of the sensor's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the indicator lamp is located on the top surface of the housing, then the structure is simple, but the indicator lamp is not visible from the bottom surface and may be invisible depending on installation position
Solution Approach 1:
The patent divides the indicator function into two separate indicator lamps: one located on the top surface and another on the bottom surface of the housing. This segmentation ensures that regardless of the installation orientation, at least one indicator lamp remains visible to the operator, resolving the visibility issue while maintaining structural simplicity
Solution Approach 2:
The patent adds the bottom surface as another dimensional location for the indicator lamp, complementing the traditional top surface location. This dimensional expansion ensures visibility from multiple directions and installation orientations, transforming a single-point visibility solution into a multi-dimensional visibility system
2Ease of operation
If the indicator lamp is located at a corner or front surface, then the visibility range is wider, but the indicator lamp is not visible from the top surface
Solution Approach 1:
By placing indicator lamps on both the top surface and bottom surface, the patent creates a segmented visibility system where each surface provides coverage for specific installation orientations. This segmentation allows the sensor to be installed in various positions (top-facing, bottom-facing, side-facing) while ensuring the indicator remains visible from at least one surface
Solution Approach 2:
The dual indicator lamp configuration provides universal visibility across multiple installation scenarios. The top surface indicator serves when the top is visible, the bottom surface indicator serves when the bottom is visible, and together they provide universal adaptability to different installation positions and orientations
Data Source
AI summary
A photoelectric sensor includes an indicator lamp that is easily visible in any direction. A photoelectric sensor (1) includes a housing (10) having a first surface (e.g., a top surface 15) and a second surface (e.g., a bottom surface 16) opposite to the first surface, and a first indicator lamp (31) and a second indicator lamp (32) that redundantly indicate information about a state of the photoelectric sensor (1). The first indicator lamp (31) is located on the first surface, and the second indicator lamp (32) is located on the second surface. The first surface and the second surface are parallel to each other. The information indicated redundantly is at least one of an on-off state of a power supply or a workpiece detection state.