Electronic Scale Ruler With Switchable Scale Display and Distance Encoding
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Solution Overview
Problem
Existing electronic measuring rulers, such as electronic vernier calipers, are limited to a single size type and lack flexibility in switching between different size types, making it inconvenient to measure actual sizes and perform scale conversions, especially when scales are lost.
Innovation Solution
An electronic scale ruler with a vernier base and a distance conversion assembly, featuring a light source with selectively turnable light beads, a guide rack, gear assembly, and magnetic encoder, allows for flexible switching between size types and accurate distance measurement, using a combination of a guide rack, gear assembly, and magnetic encoder to convert rotation angles into distance, and a brightening film to enhance scale line visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed grid plate is used in traditional electronic measuring rulers, then the structure is simple, but the adaptability to switch between various size types is limited
Solution Approach 1:
The patent applies the dynamics principle by making the grid plate replaceable rather than fixed. The grid plate can be dynamically switched between different size types (centimeters, feet, inches, millimeters) according to measurement needs, transforming a static structure into a dynamic one that adapts to different measurement scenarios.
Solution Approach 2:
The patent implements universality by designing a standardized interface between the grid plate and ruler body that allows different grid plates with various size types to be mounted on the same ruler body. This enables one ruler structure to serve multiple measurement functions across different unit systems.
2Adaptability or versatility
If multiple size types are marked on a single ruler, then the adaptability increases, but the device complexity and readability decrease
Solution Approach 1:
The patent uses dynamics by implementing electronic control that dynamically displays only the currently selected size type on the screen. When switching between size types, the display updates accordingly, avoiding the confusion of showing multiple size types simultaneously and maintaining clear readability.
Solution Approach 2:
The patent applies local quality by having different grid plates with specialized markings for specific size types. Each grid plate is optimized for its particular unit system, providing clear, unambiguous markings for that specific measurement type rather than attempting to accommodate all types on one plate.
3Adaptability or versatility
If scale conversion functionality is added to measure actual sizes, then the versatility improves, but the device complexity increases
Solution Approach 1:
The patent replaces mechanical complexity with electronic simplicity by using an electronic display and control circuitry to handle scale conversions. Instead of requiring complex mechanical mechanisms or multiple physical scales, the system uses electronic calculation and display to convert between different size types and show actual measurements.
4Measurement precision
If a moving grid assembly is used to highlight specific values, then the measurement precision improves, but the ease of operation decreases due to limited switching flexibility
Solution Approach 1:
The patent applies dynamics by enabling electronic switching between different size types and corresponding value highlightings. The system can dynamically adjust which values are highlighted on the display based on the selected size type, providing both precision through selective highlighting and ease of operation through flexible electronic switching.
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
Enables flexible switching between various size types, accurate distance measurement, and clear scale line recognition, simplifying the structure and enhancing usability for engineers and users requiring multiple unit sizes.
Implementation Method 1
a magnetic encoder, and the moving grid assembly includes a radial magnetizer, a magnetic encoder, and a moving grid line group. The radial magnetizer is to convert a rotation angle of the gear into a radial magnetic field and the magnetic encoder is to decode the radial magnetic field.
Data Source
AI summary
Disclosed is an electronic scale ruler, having a scale ruler main body, a main control board, an input, a display screen, a light source, a vernier base, and a distance conversion assembly. The scale ruler main body has an outer edge side. The light source is mounted on the outer edge side of the scale ruler main body, having a plurality of light beads and being capable of displaying scale. The vernier base is removably mounted on the outer edge side of the scale ruler main body, being capable of moving along a length direction of the outer edge side of the scale ruler main body. The distance conversion assembly is configured to calculate a movement of the vernier base from an origin on the outer edge side of the scale ruler main body.