Dual Gyro Sensor Navigation for Motorcycle Yaw Detection
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Solution Overview
Problem
Existing navigation apparatuses struggle to precisely detect and calculate yaw angular velocity, especially in vehicles like motorcycles that experience significant lean angles during turns, and current systems with multiple gyro sensors are complex and costly.
Innovation Solution
A navigation apparatus equipped with two gyro sensors arranged symmetrically with respect to perpendicular axes, each leaning by the same angle, which calculates yaw angular velocity using variations in sensor output voltages through specific algorithms to simplify the system and improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple gyro sensors are used to detect yaw angular velocity, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system segments the yaw rate detection function into two separate gyro sensors, each measuring a different component. By dividing the measurement task and combining results through calculation, the system achieves accurate yaw rate detection while maintaining a manageable sensor configuration
Solution Approach 2:
The gyro sensors are configured to serve multiple functions: they detect both roll angle information and yaw rate information simultaneously. This multi-functionality allows the system to obtain yaw rate data without requiring dedicated sensors solely for this purpose, reducing overall system complexity
2Measurement precision
If gyro sensors are arranged to account for lean angles, then measurement precision is improved, but ease of manufacture decreases
Solution Approach 1:
The system changes the orientation parameters of the gyro sensors by specifying precise lean angles relative to the vehicle's travel direction. This parameter adjustment allows the sensors to accurately capture motion components while accounting for the vehicle's leaning during turns, improving measurement precision through controlled geometric configuration
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 allows for precise and cost-effective calculation of yaw angular velocity, applicable to various vehicles, including motorcycles, with a simplified system that reduces the need for complex processing and dedicated learning systems.
Implementation Method 1
a first gyro sensor and a second gyro sensor arranged in symmetry with respect to a first axis in a travel direction of the vehicle and to a second axis that passes through the center of gravity of the vehicle
Data Source
AI summary
A navigation apparatus mounted on a vehicle is equipped with a first gyro sensor and a second gyro sensor arranged in symmetry with respect to a first axis in a travel direction of the vehicle and to a second axis that passes through the center of gravity of the vehicle, the first and second axes being perpendicular to each other, so that the first and second gyro sensors lean by the same angle from the second axis in opposing directions with respect to a third axis that is perpendicular to the first and second axes. A sensor output circuit is connected to each of the first and second gyro sensors, to output an output signal. A calculator calculates a yaw angular velocity of the vehicle based on the output signal.