Tiltable Construction Laser Direct Inclination Measurement
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Solution Overview
Problem
Conventional construction lasers face challenges in accurately determining large inclination angles relative to the gravitational field due to accumulating errors from indirect measurement methods and sensors with mismatched angular resolutions and tilt measurement ranges.
Innovation Solution
A tiltable construction laser design featuring a laser unit tiltable around two perpendicular axes, equipped with a high-resolution leveling sensor for precise alignment and a lower-resolution tilt sensor for direct inclination measurement, along with a multiplexer for serial data acquisition and computing means to control actuating drives, allowing for accurate and simple determination of inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional indirect measurement methods are used to determine large inclination angles, then the device can operate with standard sensors, but measurement precision deteriorates due to accumulating errors
Solution Approach 1:
The patent changes the measurement parameter from indirect displacement-based measurement to direct inclination angle measurement. By equipping the laser unit with a tilt sensor that directly measures the inclination angle relative to the gravitational field, the system eliminates the need for indirect calculation through actuating drive displacement, thereby eliminating error accumulation and improving measurement precision for large inclination angles.
2Measurement precision
If a single high-resolution leveling sensor is used for precise alignment, then alignment precision improves, but the ability to measure large inclination angles deteriorates due to limited tilt measurement range
Solution Approach 1:
The patent segments the measurement function by using two different sensors: a high-resolution leveling sensor (bubble level) for precise alignment at small angles and a tilt sensor for measuring large inclination angles. Each sensor operates in its optimal range, with the leveling sensor providing high-precision alignment and the tilt sensor extending the measurable angle range, thereby resolving the contradiction between precision and range.
3Adaptability or versatility
If multiple sensors with different angular resolutions are integrated, then measurement capability improves, but device complexity increases due to separate sensor assemblies
Solution Approach 1:
The patent merges the leveling sensor and tilt sensor into a single integrated sensor assembly that shares common mounting structure and evaluating electronics. The leveling sensor and tilt sensor are positioned to share the same mechanical reference frame, and their signals are processed by shared computing means, reducing overall system complexity while maintaining the ability to perform both high-precision alignment and large-angle measurement.
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 direct and accurate measurement of large inclination angles with improved precision and reduced errors, utilizing separable sensors and shared evaluating electronics for efficient operation.
Implementation Method 1
at least one leveling sensor which is sensitive to the laser unit inclination for highly precise alignment relative to the gravitational field
Implementation Method 2
at least one tilt sensor for direct measurement of an inclination angle relative to the gravitational field
Data Source
AI summary
A construction laser with at least one laser beam (4) defining a plane (3) has a laser unit (6) which is tiltable with respect to a housing (5) around at least one swiveling axis (9a) and includes at least one leveling sensor (10a) which is sensitive to the swiveling axis (9a) for a highly precise orientation to the gravitational field (G), and at least one tilt sensor (11a) which is sensitive to the swiveling axis (9a) for direct measurement of an inclination angle [alpha] relative to the gravitational field (G).