Ultrasonic 3D Measuring Device with Rotating Platform
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Solution Overview
Problem
Current three-dimensional measuring devices are complex and costly, making them unsuitable for widespread industrial and practical applications such as industrial design, manufacturing, and terrain surveys.
Innovation Solution
A simplified measuring device comprising a storage device, distance sensor, driving device, position sensor, processor, and display device, which contactlessly measures three-dimensional coordinates of an object's surface using an ultrasonic distance sensor and computes coordinates through a stored algorithm, allowing for reconstruction of the object's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional three-dimensional measuring devices are used, then measurement accuracy is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The measuring device is segmented into distinct functional modules: a driving device with rotating mechanism, a distance sensor for measurement, and a position sensor for location tracking. Each module performs a specific function, allowing the system to achieve three-dimensional measurement capability while maintaining structural simplicity and reducing manufacturing complexity
Solution Approach 2:
The measuring device uses a universal rotating platform that can position the distance sensor at multiple angular positions (0°, 45°, 90°, 135°, etc.). This single multi-functional platform replaces what would otherwise require multiple fixed measurement stations, simplifying the overall device structure while maintaining measurement accuracy across different spatial positions
2Measurement precision
If traditional three-dimensional measuring devices are used, then measurement capability is achieved, but manufacturing cost increases
Solution Approach 1:
The system uses position sensors to copy the spatial position information of the distance sensor at each angular position. By measuring the position of the distance sensor relative to the rotating platform and combining this with distance measurements, the system reconstructs three-dimensional coordinates through computational copying of spatial relationships, reducing the need for complex mechanical measurement structures
Solution Approach 2:
The invention replaces complex mechanical three-dimensional measurement mechanisms with a combination of ultrasonic distance sensing and electronic position tracking. The ultrasonic sensor measures distance electronically rather than through mechanical contact, and the position sensor tracks location electronically, substituting mechanical complexity with electronic measurement and computation
3Productivity
If contactless measurement is implemented, then measurement speed improves, but measurement precision may be affected
Solution Approach 1:
The system incorporates position sensors that provide continuous feedback on the distance sensor's location at each angular position. This feedback mechanism allows the control system to accurately correlate each distance measurement with its corresponding spatial position, maintaining measurement precision while enabling rapid contactless measurement at multiple positions without mechanical contact or adjustment time
Solution Approach 2:
The rotating platform is pre-configured with specific angular positions (0°, 45°, 90°, 135°, etc.) where measurements are taken. By establishing these predetermined measurement positions in advance, the system can rapidly move to and measure at each position without real-time calculation or adjustment, improving measurement speed while maintaining precision through the pre-planned measurement geometry
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 provides accurate and cost-effective three-dimensional measurements, enabling applications like facial feature recording, object sizing, and terrain surveying with a straightforward structure suitable for mass production and use.
Implementation Method 1
distance sensor used for contactlessly measuring a first distance between each of the points on the surface of the object and the distance sensor
Data Source
AI summary
A method for measuring three dimensional coordinates of each of points on a surface of an object includes pre-storing an algorithm that includes a plurality of parameters. A driving device is controlled to drive a distance sensor to move to each of measuring positions, and a first distance between each of the points and the distance sensor is obtained using the distance sensor. Each position information of the distance sensor is obtained using a position sensor, when the distance sensor is located at each of the measuring positions. Once a parameter of a reference coordinate is determined, the three dimensional coordinates of each of the points is computed using the algorithm based on the plurality of parameters.