Work Machine Antenna Layout to Minimize Cab Communication Interference
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Solution Overview
Problem
The existing work machines face interference issues between antennas and communication devices due to the cab guard covering the cabin, which affects communication performance.
Innovation Solution
The work machine is designed with a first antenna and a first communication device positioned on the occupant unit, separated to minimize interference and allow efficient attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cab guard covers the entire upper portion of the cabin to protect antennas, then antenna protection and attachment is improved, but communication device attachment is hindered due to interference
Solution Approach 1:
The patent divides the attachment structure into two separate locations: the cab guard for antennas and the cabin for communication devices. This segmentation allows each component to be attached to the most suitable structure without interference, resolving the contradiction between antenna protection and communication device attachment
Solution Approach 2:
The patent introduces the cabin as an intermediary structure for mounting communication devices, which are not directly attached to the cab guard. This intermediary approach allows communication devices to be positioned close to the cabin for protection while maintaining sufficient distance from antennas to avoid interference
2Productivity
If multiple devices are attached to the same structure, then attachment efficiency is improved, but signal interference increases between devices
Solution Approach 1:
The patent segments the attachment locations into distinct zones: cab guard for antennas and cabin for communication devices. This spatial segmentation maintains attachment efficiency by utilizing available structures while preventing signal interference through physical separation of electromagnetic-sensitive components
Solution Approach 2:
The patent utilizes different spatial dimensions and locations on the work machine - attaching antennas to the upper cab guard structure and communication devices to the side or lower portions of the cabin. This dimensional distribution allows multiple devices to be attached efficiently while maintaining adequate separation to minimize electromagnetic interference
Data Source
AI summary
A work machine includes a machine body, a first antenna, and a first communication device. The machine body includes an occupant unit capable of accommodating an occupant. The first antenna is disposed on the occupant unit. The first communication device is disposed on one side of the occupant unit in a width direction (left-right direction).