Electronic Level Wide-Angle Lens Multi-Staff Recognition
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Solution Overview
Problem
Conventional electronic levels are unable to simultaneously recognize multiple level staffs and obtain their collimation heights, requiring sequential collimation and reading of code patterns for each staff, which is time-consuming and prone to errors.
Innovation Solution
An electronic level with a wide-angle lens system and image processing unit that captures and processes images of multiple level staffs with divided code patterns, allowing for simultaneous recognition and automatic calculation of collimation heights by using offset values to correct height-level measurement values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional electronic level performs collimation and reading for each level staff sequentially, then reading accuracy is maintained, but surveying time increases and productivity decreases
Solution Approach 1:
The patent divides the code pattern into multiple segments that can be simultaneously recognized across multiple level staffs. The code pattern is segmented both spatially (across different staffs) and functionally (different reading positions), allowing parallel processing of multiple measurements without sacrificing accuracy
Solution Approach 2:
The patent merges multiple collimation operations into a single simultaneous measurement process. By combining the reading of multiple level staffs into one operation, the system achieves both high productivity (reduced surveying time) and maintains measurement precision through electronic reading and processing
2Measurement precision
If conventional electronic level reads code patterns one by one, then measurement accuracy is ensured, but the device cannot simultaneously recognize multiple level staffs
Solution Approach 1:
The electronic level is designed with multi-functionality to simultaneously perform collimation and reading operations on multiple level staffs. The system can handle both single-staff and multi-staff measurements, adapting to different surveying scenarios while maintaining accuracy through consistent electronic reading methods
Solution Approach 2:
The patent transitions from sequential one-dimensional processing (one staff at a time) to simultaneous multi-dimensional processing (multiple staffs at once). By utilizing the spatial dimension and arranging code patterns across multiple staffs, the system achieves parallel recognition while maintaining measurement precision through coordinated electronic reading
3Productivity
If code pattern is divided across multiple level staffs, then simultaneous recognition becomes possible, but identification of individual staffs becomes more difficult
Solution Approach 1:
Each level staff is assigned a unique local quality through its specific code pattern characteristics. The code pattern varies locally across different staffs through different arrangements, positions, or configurations, enabling individual identification while maintaining the overall segmented structure that enables simultaneous recognition
Data Source
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AI summary
An electronic level includes a wide-angle lens system having a two-dimensional imaging element configured to form thereon a picture image including an image of a level staff assigned with a code pattern, an extraction part configured to extract the image of the level staff from the picture image, a height-level measurement value calculation part configured to obtain a height-level measurement value indicated by a portion of the code pattern in the image of the level staff extracted by the extraction part, the portion of the code pattern located at a collimation optical axis of the wide-angle lens system, and a calculation part configured to calculate a collimation height from the height-level measurement value.