Saddle-Type Vehicle Driver Posture Detection Using RF Phase Positioning
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Solution Overview
Problem
Existing technologies cannot accurately detect the posture of a driver in a saddle-type vehicle, which is crucial for vehicle body behavior during driving, and they also consume excessive electric power.
Innovation Solution
A driver posture detection apparatus and method using at least two wireless receivers with multiple antennas attached to a saddle-type vehicle and at least one wireless transmitter with multiple antennas attached to the driver's wear, calculating the direction and position of the transmitter relative to the receivers, and determining the driver's posture based on this data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless communication techniques are used to detect driver posture, then driver posture detection capability is improved, but electric power consumption increases
Solution Approach 1:
The wireless transmitter transmits unmodulated radio waves only during a fixed period for posture detection rather than continuously, enabling periodic measurement while reducing overall power consumption. The system activates transmission only when posture information is needed, creating a cycle of transmission and idle states that balances detection accuracy with energy conservation.
Solution Approach 2:
The patent extracts only the essential component for posture detection (unmodulated radio wave transmission during fixed periods) from continuous wireless communication operations. By separating the posture detection function from ongoing data communication, the system achieves accurate posture measurement without the energy overhead of constant modulated transmission.
2Measurement precision
If multiple wireless receivers with multiple antennas are used, then driver posture detection accuracy is improved, but device complexity increases
Solution Approach 1:
The system segments the wireless communication function into distinct roles: multiple receivers with multiple antennas are dedicated solely to posture detection, while separate communication modules handle data transmission. This segmentation allows the detection subsystem to achieve high accuracy through multiple antennas without requiring the entire system to be redesigned for complexity.
Solution Approach 2:
The multiple antennas in the wireless receivers serve dual purposes: they enable accurate driver posture detection through phase information analysis, and simultaneously provide robust wireless communication capabilities. This multi-functionality allows the system to achieve high measurement precision without proportionally increasing overall device complexity.
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
The solution enables accurate detection of the driver's posture with reduced electric power consumption, effectively improving vehicle control and stability by considering the driver's position.
Implementation Method 1
a direction calculation section that calculates, based on phase information on radio waves from the wireless transmitter that are received by the wireless receiver, a direction of the wireless transmitter with respect to the wireless receiver
Data Source
AI summary
The present invention relates to a driver posture detection apparatus and a driver posture detection method that allow a posture of a driver of a saddle-type vehicle to be detected. A driver posture detection apparatus is provided with: at least two wireless receivers that are attached to a saddle-type vehicle and each include a plurality of antennas; at least one wireless transmitter that is attached to wear of a driver of the saddle-type vehicle; a direction calculation section that calculates, based on phase information on radio waves from the wireless transmitter that are received by the wireless receiver, a direction of the wireless transmitter with respect to the wireless receiver; a position calculation section that calculates, based on direction data calculated by the direction calculation section, a position of the wireless transmitter with respect to the wireless receiver; and a posture calculation section that calculates, based on position data calculated by the position calculation section, a posture of the driver with respect to the saddle-type vehicle.