Driver Posture Measurement Using Radio Wave Arrival Angle
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Solution Overview
Problem
Existing driver posture measurement devices for saddle-type vehicles, such as motorcycles, face challenges in design constraints and cost due to the need for multiple wireless communication units, which complicates vehicle layout and increases costs.
Innovation Solution
A simplified driver posture measurement device using a single wireless communication unit attached to the driver and another on the vehicle, detecting radio wave arrival angles and intensity to determine the driver's posture, reducing the number of units required and maintaining vehicle design integrity while lowering costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple wireless communication units are attached to the vehicle as in Patent Document 1, then driver posture measurement accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the conventional approach of using multiple wireless communication units with a sensorless driver posture detection system that utilizes existing vehicle sensors (accelerometers, gyroscopes, load sensors) to detect driver posture. This substitution of the measurement mechanism eliminates the need for additional wireless communication units while maintaining measurement capability through alternative physical sensing methods.
2Measurement precision
If multiple wireless communication units are attached to the vehicle, then driver posture measurement capability is improved, but vehicle cost increases
Solution Approach 1:
The patent makes existing vehicle sensors serve multiple functions: they continue their original purposes for vehicle operation and control while simultaneously being utilized for driver posture detection. This multi-functionality allows the system to achieve posture measurement capability without adding dedicated sensors or communication units, thereby avoiding additional manufacturing costs.
3Reliability
If multiple wireless communication units are provided on both driver and vehicle sides, then measurement reliability is improved, but device complexity increases
Solution Approach 1:
The system utilizes the vehicle's existing sensor network and control units to perform driver posture detection, allowing the vehicle's own components to serve the additional function of posture measurement. This self-service approach eliminates the need for separate dedicated measurement systems, reducing overall complexity while maintaining measurement reliability through the use of established vehicle sensors.
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 solution allows for accurate detection of various driving postures with a simpler configuration, reducing vehicle design and cost burdens while enabling instant drive control and advanced safety function determinations.
Implementation Method 1
radio wave arrival angle detection unit which detects, for the second wireless communication unit, a radio wave arrival angle from the first wireless communication unit
Data Source
AI summary
Provided are a driver posture measurement device and a vehicle control device that can accurately measure the posture of a driver with a simple configuration without attaching a plurality of wireless communication units to a vehicle. The driver posture measurement device and the vehicle control device are configured such that, between one wireless communication unit provided on the vehicle side and one wireless communication unit provided on the driver side, radio waves are radiated from the wireless communication unit provided on the vehicle side, and on the basis of a radio wave arrival angle of the radio waves arriving at the wireless communication unit provided on the driver side, the driver posture is measured.