Valve Spindle Position Indicator Using Colored LEDs
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Solution Overview
Problem
Existing valve position indication technologies are ambiguous and prone to errors due to varying valve types and principles, leading to potential process automation issues and high manufacturing costs for custom designs.
Innovation Solution
A device with a sensor module and identical optical display elements (LEDs) indicating the end positions of a valve spindle, independent of valve states, using defined locations and additional identification means like labels to ensure unambiguous spindle position indication, applicable to both linear and rotary drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-colored LEDs are used to indicate valve states, then the valve state can be indicated with color codes, but the indication becomes ambiguous and error-prone due to different valve types and operating principles
Solution Approach 1:
Instead of indicating valve states (open/closed) with different colors, the invention inverts the approach by indicating the physical position of the valve spindle (first end position/second end position) with different colored LEDs. This eliminates the ambiguity caused by different valve types, as the spindle position is universally meaningful regardless of valve operating principles.
Solution Approach 2:
The invention changes the parameter being indicated from valve state (which varies by valve type) to spindle position (which is universal). By using different colors to represent different spindle positions rather than valve states, the system achieves unambiguous indication across all valve types.
2Adaptability or versatility
If custom designs are provided for different valve types, then each customer's specific valve configuration can be accommodated, but manufacturing costs increase significantly
Solution Approach 1:
The invention creates a universal position indication device that works with all valve types by indicating spindle position rather than valve state. A single design with colored LEDs indicating first and second end positions can be used across different valve types, eliminating the need for custom designs for each customer's specific valve configuration and significantly reducing manufacturing costs.
3Ease of operation
If simple mechanical position indications are used, then the device is simple and low-cost, but the indication is difficult to identify and cannot determine the valve state unequivocally
Solution Approach 1:
The invention uses color changes in LEDs to indicate different spindle positions. Different colored LEDs (or different colors of the same LED) light up to indicate the first end position versus the second end position, making the position indication clear, easy to identify, and unambiguous, while maintaining simplicity and low cost.
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
Provides a reliable, cost-effective, and unambiguous position indication for valve spindles, independent of valve types and drive units, reducing the risk of errors and allowing for modular, low-cost production.
Implementation Method 1
a first optical display element, preferably a first LED, for indicating the first position, and a second optical display element, preferably a second LED, for indicating the second position
Data Source
AI summary
Provision is made of a device for indicating the position of a valve spindle of a valve. The device comprises a valve spindle which can be shifted between a first position and a second position, and a sensor module for detecting at least the end positions of the valve spindle. The device further comprises at least a first optical display element (58), preferably a first LED, for indicating the first position, and a second optical display element (60), preferably a second LED, for indicating the second position. A first end position indication (66) is assigned to the first display element (58) and a second end position indication (68) is assigned to the second display element (60).