Code Disc Alignment for Distance Measuring Starting Point
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Solution Overview
Problem
Existing distance measuring devices with multiple rotators increase manufacturing and maintenance costs due to complex component structures, necessitating a more efficient and cost-effective solution for determining the distance measuring starting point.
Innovation Solution
A compact distance measuring device utilizing a synchronous scanning mode of a code disc with a motor, control box, and light emitter/receiver system, where the code disc rotates relative to the control box, and the control unit identifies alignment based on output waveforms to send start/stop instructions to the distance measuring unit, simplifying structure while maintaining high sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple rotators with different periods of rotation are provided to detect rotation number and angle, then the rotation detection capability is improved, but the manufacturing costs and maintenance costs are increased
Solution Approach 1:
The patent combines multiple rotators with different periods of rotation into a single code disc structure that has both a first code region and a second code region with different code densities. This merging eliminates the need for separate rotators while maintaining the capability to detect both rotation number and rotation angle with high precision.
Solution Approach 2:
The code disc serves multiple functions simultaneously: it acts as both the first rotator and the second rotator, provides both coarse rotation detection (through the first code region) and fine rotation detection (through the second code region), and enables determination of the distance measuring starting point. This multi-functionality reduces the overall device complexity while maintaining measurement precision.
2Measurement precision
If multiple rotators are provided to detect rotation information, then the rotation measurement accuracy is improved, but the adjustment and maintenance costs are increased
Solution Approach 1:
By merging the functions of multiple rotators into a single code disc with multiple code regions, the patent reduces the number of components that require adjustment and maintenance. The single code disc structure eliminates the need to adjust and maintain multiple separate rotators, thereby reducing maintenance costs while preserving high rotation measurement accuracy.
3Measurement precision
If a code disc with different code densities is used to determine starting point, then the distance measuring accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The code disc is segmented into different code regions with different code densities - a first code region with first code density and a second code region with second code density. This segmentation allows the device to achieve high distance measuring accuracy by using appropriate code regions for different measurement scenarios, while the segmentation itself is implemented in a straightforward manner on a single disc.
Solution Approach 2:
Different regions of the code disc have different local qualities in terms of code density. The first code region has higher code density for fine measurement, while the second code region has lower code density for coarse measurement or different measurement ranges. This local quality variation enables the device to achieve high measurement precision without requiring a uniformly complex structure throughout the entire code disc.
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 device achieves accurate and efficient determination of the distance measuring starting point with a compact, clever design, reducing costs and enhancing sensitivity through the use of a code disc with strategically placed teeth and waveform recognition.
Implementation Method 1
the detection part comprises a light emitter and a light receiver which are arranged correspondingly; the control box and the code disc rotate relative to each other so that the point position tooth passes through a corresponding position between the light emitter and the light receiver
Data Source
AI summary
A distance measuring device includes a motor, a control box and a code discs which are relative rotate driven by the motor. A point position tooth is comprised on the code disc. The control box comprises a distance measuring unit, a detection part and a control unit. The detection part comprises a light emitter and a light receiver which are correspondingly arranged. The control box is rotated relative to the code disc, so that the point position tooth passes through a corresponding position between the light emitter and the light receiver; the control unit receives the signal output of the light receiver, judges the information on alignment status of the point position tooth with the corresponding position, and sends a start or stop operation instruction to the distance measuring unit on the basis of the status information. A method for seeking a distance measuring starting point is also provided.