Fan-Like Guide Light for Survey Apparatus Positioning
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Solution Overview
Problem
Conventional survey systems face difficulties in quickly guiding survey operators to set points, especially in environments with undulations in height, due to the emission of guide lights as spot lights, and lack clear positional relationships between the operator and setting points.
Innovation Solution
A survey system equipped with a guide light device that emits fan-like guide lights in a vertical direction, a survey apparatus with directional sensors, and a mobile wireless transceiver that displays a setting map and indicates the movement direction to the next setting point, allowing for accurate positioning and rotation of the map based on detected directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guide light is emitted as spot light at position out of eye height, then guide light can be emitted, but survey operator cannot find guide light quickly
Solution Approach 1:
The guide light is changed from a horizontal spot light to a vertical fan-shaped light that extends in the vertical direction. This dimensional change allows the guide light to be visible regardless of the survey operator's eye height, solving the problem of inability to find the guide light in undulating terrain.
Solution Approach 2:
The guide light uses different colors (red and green LEDs) to indicate collimation direction. This color differentiation helps the survey operator quickly identify and locate the guide light and understand its directional indication function.
2Productivity
If conventional guide light device is used, then simple structure is maintained, but setting operation efficiency is low
Solution Approach 1:
The guide light device is integrated with the survey apparatus to serve multiple functions: indicating collimation direction through colored lights and providing vertical directional guidance through fan-shaped light projection. This multi-functionality improves setting operation efficiency without requiring separate guidance devices.
Solution Approach 2:
A reflective prism (corner reflector) is introduced as an intermediary element that enhances the visibility and effectiveness of the guide light. The prism reflects the fan-shaped light back toward the survey operator, improving the guidance function while maintaining reasonable device complexity.
3Measurement precision
If positional relationship between survey operator and setting point is not clear, then simple system is maintained, but setting operation accuracy is poor
Solution Approach 1:
The survey apparatus measures the position and orientation of the reflective prism, and this measurement information is used to calculate and display the positional relationship between the survey operator and the setting point on the mobile device. This feedback mechanism enables accurate positioning while using standard surveying components.
Solution Approach 2:
The real-world positional relationship is copied and displayed as a graphical representation on the mobile device screen, showing the survey operator's position, the setting point location, and directional guidance. This visual copy helps the operator understand spatial relationships without complex mental calculations.
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 quick and accurate positioning of survey targets by ensuring the guide light can be easily identified regardless of operator height and provides clear directional guidance, improving the efficiency of the setting operation.
Implementation Method 1
the guide light emitting optical system being rotated about the vertical axis in a horizontal direction together with the cylindrical part
Implementation Method 2
a retroreflective corner reflector is provided on a middle part of the post
Data Source
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AI summary
A survey apparatus includes a guide light emitting optical system (11) emitting a fan-like visible laser light elongated in upward and downward directions as a guide light, a cylindrical part (8) having a scanning optical system (10) searching a corner reflector provided on a survey pole and a ranging optical system (9) measuring a distance to the corner reflector, a driving part rotating the cylindrical part (8) about a vertical axis (4A) in a horizontal direction and rotating the cylindrical part about a horizontal axis (7A), and an angle measurement part measuring a direction of the cylindrical part. The guide light emitting optical system (11) is rotated about the vertical axis in a horizontal direction integrally with the cylindrical part (8).