Cabin Frame Antenna Unit Layout for Autonomous Work Vehicles
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Solution Overview
Problem
Conventional work vehicles face challenges in efficiently mounting and securely supporting various antenna devices for autonomous traveling, particularly due to the limited rigidity and curved surface of the cabin roof, which affects detection accuracy and communication reliability.
Innovation Solution
A support frame is fixed to the cabin frame, housing an antenna unit with an inertial measurement unit, GNSS antenna, and wireless communicator, allowing for adjustable positioning to enhance detection accuracy and communication, while also providing a strong support structure and accommodating height restrictions during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the GPS antenna is mounted on the upper surface of the cabin roof, then the detection accuracy of the GPS antenna is improved, but the mounting structure becomes complex and the appearance of the cabin roof is impaired
Solution Approach 1:
The patent combines the GPS antenna mounting function with the existing cabin frame structure. The support frame is fixed to the cabin frame at an upper position outside the cabin, integrating the antenna support function into the existing structural framework rather than adding separate reinforcement elements to the cabin roof.
Solution Approach 2:
The patent extracts the GPS antenna and related devices from the cabin roof mounting location and relocates them to the support frame mounted on the cabin frame. This separation removes the need for roof reinforcement while maintaining detection accuracy through proper positioning.
2Adaptability or versatility
If various types of antenna devices are mounted on the work vehicle for autonomous traveling, then the functionality for autonomous traveling is improved, but the mounting efficiency and space utilization are reduced
Solution Approach 1:
The support frame serves multiple functions: it mounts the GPS antenna, inertial measurement unit, and wireless communicator simultaneously. This multi-functional platform consolidates what would otherwise require separate mounting structures, improving mounting efficiency while providing all necessary autonomous traveling functionalities.
Solution Approach 2:
The patent merges multiple antenna devices (GPS antenna, inertial measurement unit, wireless communicator) into a single integrated mounting system on the support frame. This consolidation improves space utilization and mounting efficiency compared to separate mounting arrangements.
3Measurement precision
If the antenna unit is positioned to protrude above the roof for optimal detection, then the detection accuracy is improved, but the height restriction during transportation is violated
Solution Approach 1:
The patent implements a movable antenna unit that can dynamically adjust its position between a protruding state (when height restrictions are not an issue) and a retracted state (when height restrictions apply). This dynamic positioning allows the system to optimize detection accuracy when needed while complying with transportation height restrictions when required.
Data Source
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AI summary
The present invention provides a work vehicle with which various antenna devices useful for autonomous travel and the like of the work vehicle can be mounted efficiently and the various antenna devices can be solidly supported. This work vehicle 1 is provided with a cabin 7, wherein a support frame 100 is fixed to a cabin frame 200 in the left-right width direction at an upper position on the outside of the cabin 7, and an antenna unit 50 on which an inertial measurement device, a GNSS antenna, and a wireless communication device are assembled, is attached to the support frame 100 while the inertial measurement device and the GNSS antenna are arranged in approximately the center position in the left-right width direction of the machine body.