2D Scanner Sensor Selection for Rapid Floorplan Scanning
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Solution Overview
Problem
Existing measurement systems for generating digital two-dimensional floorplans of environments are complex, require specialized personnel, and are bulky, which can delay the scanning process in time-sensitive situations like crime or accident scene investigations.
Innovation Solution
A portable system comprising a 2D scanner, an inertial measurement unit, and a mobile computing device that selects sensors based on their characteristics to generate a two-dimensional image of an environment, allowing for efficient and accurate scanning by a single operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing measurement systems are used to generate digital two-dimensional floorplans, then measurement precision is improved, but device complexity and operator specialization requirements increase
Solution Approach 1:
The system divides the measurement function into two independent parts: a 2D scanner for capturing coordinate data and an inertial measurement unit for tracking device position and orientation. This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining measurement precision.
Solution Approach 2:
The patent introduces an intermediary processing system that receives data from both the 2D scanner and inertial measurement unit, combines these data streams, and generates the final floorplan. This intermediary layer simplifies the integration complexity by providing a standardized interface between the sensing components and the output generation.
2Measurement precision
If existing measurement systems with movable structures are used, then measurement precision is improved, but portability and scanning speed deteriorate
Solution Approach 1:
The patent replaces the traditional mechanical movable structure (cart or tripod) with a handheld portable device equipped with an inertial measurement unit. This substitution eliminates the need for bulky mechanical support structures, allowing the operator to move the device freely through the environment, thereby increasing scanning speed and productivity while maintaining measurement precision through the inertial tracking system.
3Measurement precision
If existing measurement systems are used, then measurement precision is improved, but portability and ease of operation worsen
Solution Approach 1:
The system implements self-service functionality by automatically processing the raw coordinate data from the 2D scanner and position data from the inertial measurement unit to generate the final floorplan. The automated processing and registration algorithms eliminate the need for specialized operator skills in data processing and alignment, making the system easier to operate while maintaining measurement precision.
Solution Approach 2:
The patent changes the operational parameters from requiring manual setup and calibration to automatic sensor-based tracking. The inertial measurement unit continuously provides position and orientation data, eliminating the need for manual parameter adjustments or specialized knowledge of coordinate transformations, thereby improving ease of operation.
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 the creation of accurate and efficient two-dimensional maps of environments, reducing the need for specialized personnel and minimizing scanning time, making it suitable for time-sensitive situations.
Implementation Method 1
The light source steers a beam of light within the first plane to illuminate object points in the environment. The image sensor is arranged to receive light reflected from the object points.
Implementation Method 2
The 2D scanner that comprises a light source, an image sensor and a controller. The light source steers a beam of light within the first plane to illuminate object points in the environment.
Implementation Method 3
An inertial measurement unit is fixedly coupled relative to the 2D scanner and having a first sensor, the inertial measurement unit generating a signal in response a change in position or orientation of the housing
Data Source
AI summary
A system and method of generating a two-dimensional image of an environment is provided. The system includes a 2D scanner that comprises a light source, an image sensor and a controller. The controller determines a distance value to at least one of the object points. An inertial measurement unit is coupled to the scanner and has a first sensor. The first sensor has a first characteristic. A mobile computing device is removably coupled to the 2D scanner, the mobile computing device having a second sensor, the second sensor having a second characteristic. Processors are provided that are responsive to compare the first characteristic and the second characteristic and select one of the first or second sensor based on the comparison. The processors are further generate an image of the environment based on a signal from the selected first or second sensor.