Projector Inclination Sensor Reflective Positioning Construction
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Solution Overview
Problem
Existing technologies require a distance image sensor to project information on a construction site, limiting their ability to properly display various types of information without this dependency and failing to consider information other than the survey setting point.
Innovation Solution
A system comprising a projector with an inclination sensor, a reflector, and a measuring device that measures the reflector's position, allowing surface information to be projected onto a construction site without relying on a distance image sensor, using a projector and measuring device that can set a normal distance between the projection surface and the measuring device, and adjust the projection accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a distance image sensor is used to project information on a construction site, then the projection can be properly displayed, but the system becomes dependent on this specific sensor and cannot project various types of information
Solution Approach 1:
The patent removes the distance image sensor from the system by using a measuring device that measures the position of a reflector instead. This extraction eliminates the dependency on the specific sensor while maintaining the ability to project information properly on the construction site surface.
Solution Approach 2:
The measuring device with reflector configuration provides universal functionality for measuring positions of multiple reflectors, enabling the system to project various types of information (survey setting points, piping, electric equipment, etc.) without requiring different specialized sensors for each type of information.
2Adaptability or versatility
If only survey setting point information is projected, then the projection is simple, but various types of information other than survey setting point cannot be displayed
Solution Approach 1:
The system uses a universal measuring device that can measure the position of any reflector, enabling it to handle multiple types of information (survey setting points, piping, electric equipment, component attaching positions) with a single system configuration, thus achieving versatility without significantly increasing manufacturing complexity.
3Ease of operation
If the projection surface has irregularities, then the projection can be displayed on the actual construction site surface, but errors are caused by the irregularities
Solution Approach 1:
The system performs preliminary measurement of the projection surface's three-dimensional shape information before projection. This preliminary action allows the system to compensate for surface irregularities and maintain projection accuracy by adjusting the projection based on the measured surface 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
Enables the proper display of various types of information on a construction site without a distance image sensor, including information beyond the survey setting point, improving efficiency and reducing costs by eliminating the need for this specific technology.
Implementation Method 1
The inclination sensor provided on the projector detects acceleration along at least one axis related to the projector. Preferably, the inclination sensor may detect acceleration along two orthogonal axes or, more preferably, three orthogonal axes related to the projector.
Implementation Method 2
The reflector provided on the projector is preferably a 360° prism, but may be other reflectors such as a reflection seal, etc., as long as it is capable of reflecting distance-measuring light and tracking light from the measuring device.
Data Source
AI summary
Provided is a technology to properly display information onto a projection surface without depending on a distance image sensor, and directly project a wide range of information other than a survey setting point onto a construction site. A system includes: a projector including an inclination sensor and at least one reflector; a measuring device configured to measure a position of the reflector; a means having surface information; and a means configured for setting a distance between a projection surface onto which the surface information is projected and the measuring device in a normal direction, wherein the measuring device measures the reflector, and the surface information adjusted according to the distance in the normal direction is projected onto the projection surface.