Straddle Vehicle Antenna and Sensor Interference Shielding
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Solution Overview
Problem
In straddle type vehicles, combining antennas for communication and sensing units poses challenges in ensuring a broad communication range while minimizing the influence of metallic occluding objects and suppressing electromagnetic wave interference.
Innovation Solution
The vehicle is designed with the antenna and sensing unit arranged such that a constituent component is placed between them, with the sensing unit supported by a main frame extending in the longitudinal direction and positioned more in the front direction than the antenna, effectively reducing the impact of metallic occluding objects and electromagnetic wave interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna and sensing unit are arranged close to each other to reduce vehicle size, then device integration is improved, but electromagnetic wave interference between them increases
Solution Approach 1:
A metallic occluding object (such as a headlight assembly or vehicle component) is strategically positioned between the antenna and sensing unit to block electromagnetic wave interference. This intermediary structure physically separates the two components while maintaining compact vehicle dimensions, allowing them to be arranged close together without direct electromagnetic interference.
2Reliability
If the antenna is positioned to achieve broad communication range, then communication performance is improved, but the antenna may be blocked by metallic occluding objects
Solution Approach 1:
The antenna is positioned in the vertical direction (upward) rather than only in the horizontal front direction. This dimensional change allows the antenna to achieve broad communication range while avoiding blockage from metallic occluding objects located in the horizontal plane, such as the headlight assembly or vehicle body components.
3Measurement precision
If the sensing unit is positioned to sense the front direction clearly, then sensing performance is improved, but the antenna and sensing unit interfere with each other electromagnetically
Solution Approach 1:
A metallic occluding object is positioned between the antenna and sensing unit to act as an electromagnetic shield. This allows the sensing unit to be optimally positioned for front direction sensing while the metallic object blocks electromagnetic interference from the antenna, maintaining both sensing precision and communication functionality.
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
This configuration enhances the communication range by minimizing interference from metallic objects and ensures effective sensing performance by positioning the sensing unit to avoid obstruction and interference.
Implementation Method 1
an antenna capable of receiving a wireless signal of a predetermined frequency band
Implementation Method 2
a sensing unit for sensing a situation in a front direction of the vehicle
Data Source
AI summary
The straddle type vehicle comprises an antenna that can receive a wireless signal of a predetermined frequency band, and a sensing unit for sensing a situation in front of the vehicle. A constituent component of the vehicle is arranged between the antenna and the sensing unit.