Electronic Measuring Wheel Breakage-Proof Display
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Solution Overview
Problem
Conventional electronic measuring wheels face issues with breakage of the glass cover on the liquid crystal display and difficulty in viewing measurement data under bright lighting, along with a lack of waterproofing, leading to increased costs and usability challenges.
Innovation Solution
An electronic measuring wheel featuring a casing with a seven-segment display made without glass, using light-emitting diodes for high brightness visibility and a waterproof design with an induction ring and sensor to calculate distance measurements, preventing water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glass cover is used on the liquid crystal display, then the display is protected, but the glass cover is prone to breakage and cannot provide waterproofing
Solution Approach 1:
The patent removes the glass cover from the liquid crystal display assembly, eliminating the component that causes breakage and waterproofing failures. The display is mounted directly on the casing without a separate glass protective layer, thereby solving both the breakage and waterproofing issues simultaneously.
2Reliability
If a glass cover is used on the liquid crystal display, then the display is protected, but the cost increases due to waterproofing requirements
Solution Approach 1:
By removing the glass cover, the patent eliminates the need for complex waterproofing seals and gaskets that would be required around the glass perimeter, thereby reducing manufacturing costs while maintaining display protection through the integrated casing design.
3Loss of information
If a liquid crystal display with glass cover is used, then the display can show measurement data, but the data cannot be seen easily under bright lighting
Solution Approach 1:
The patent changes the display technology from liquid crystal display to seven-segment display, which inherently provides higher brightness and better visibility under sunlight conditions. This parameter change in display type resolves the visibility issue under bright lighting without requiring additional shading mechanisms.
4Loss of information
If a liquid crystal display with glass cover is used, then the display can show measurement data, but the glass cover provides no waterproof protection
Solution Approach 1:
The patent removes the glass cover that fails to provide waterproofing and integrates the display directly into the sealed casing structure. The seven-segment display is mounted within the waterproof casing, eliminating the interface where water could penetrate and ensuring complete waterproof protection while maintaining display functionality.
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
The solution provides a breakage-proof and high-brightness display that is easily readable under various lighting conditions while maintaining a waterproof effect, reducing operational costs and enhancing user convenience.
Implementation Method 1
The induction ring is mounted around the inner end of the distance wheel axle near the sensor
Implementation Method 2
using light-emitting diodes for high brightness visibility
Data Source
AI summary
An electronic measuring wheel has a casing, a distance wheel and an operating shaft. The casing has a power supply, a seven-segment display and a sensor. The seven-segment display is mounted in the casing and is electrically connected to the power supply. The sensor is mounted on the seven-segment display in the casing and is electrically connected to the power supply and the seven-segment display. The distance wheel is rotatably connected to the casing and has a distance wheel axle and an induction ring. The distance wheel axle has an inner end mounted in the casing. The induction ring is mounted around the inner end of the distance wheel axle near the sensor. The operating shaft is connected to the casing.