Laser Scanner Positioning Mechanism for Mobile Mapping Mounting
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Solution Overview
Problem
Existing mobile mapping system measuring devices face challenges in mounting capability due to heavy weight, requiring two people to lift and mount, and suffer from reproducibility issues when optical sensor devices like laser scanners are attached, detached, or changed, affecting measurement accuracy and convenience.
Innovation Solution
The measuring device incorporates a position deciding member, such as pins and screws, to securely attach and detach optical sensor devices like laser scanners from the housing, ensuring reproducibility of sensor measurement data and improving mounting capability by allowing separation of the sensor and control parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the measuring device is mounted as an integrated unit on the vehicle roof, then measurement accuracy and system stability are improved, but the device becomes too heavy (over 50 kg) for two people to mount safely
Solution Approach 1:
The measuring device is divided into two main segments: a heavy integrated unit containing the inertial device, information processing device, and housing, and a separate optical sensor device. This segmentation allows the heavy unit to be mounted securely on the vehicle roof while the lighter optical sensor can be handled separately and attached/detached as needed, resolving the contradiction between maintaining system stability and reducing mounting weight.
2Ease of operation
If the optical sensor device is separated from the housing to reduce mounting weight, then mounting capability is improved, but the number of cables required for connection increases
Solution Approach 1:
The optical sensor device is pre-equipped with extension cables that allow it to be connected to the housing at various positions without requiring additional cable management. This preliminary preparation of connection means enables easy attachment and detachment of the optical sensor while minimizing the complexity of cable routing and connection procedures.
3Adaptability or versatility
If the optical sensor device is attached and detached repeatedly or replaced, then adaptability and maintenance are improved, but the reproducibility of sensor measurement data and measurement accuracy deteriorate due to position changes
Solution Approach 1:
The housing is pre-equipped with multiple attachment positions and a position deciding member that automatically identifies and guides the optical sensor to the correct attachment location. This preliminary arrangement of positioning features ensures that regardless of how many times the sensor is attached or detached, it always returns to the precise original position, maintaining measurement accuracy and data reproducibility.
Solution Approach 2:
The patent replaces manual positioning and alignment procedures with an automatic position deciding mechanism. Instead of requiring operators to manually align the optical sensor with precision markings or use complex alignment tools, the position deciding member automatically guides and constrains the sensor to its correct position, eliminating human error and ensuring consistent reproducible measurements.
Data Source
AI summary
In a measuring device, a position of a laser scanner on a top plate (201) of a housing has been decided by pins (220) and a fixing member (210), and the laser scanner has been attached to the housing, and also the laser scanner that has been in a attached state can be detached, and again the position on the top plate (201) can be decided by the pins (220) and the fixing member (210), and the laser scanner can be attached to the top plate (201).