Saddle Vehicle Brake Control Based on Rider Attitude Detection
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Solution Overview
Problem
Existing drive assistance systems for saddle type vehicles cannot determine a rider's attitude from grip sensor data and reflect this in automatic control, leading to potential disturbances for irregular riding positions like one-hand driving.
Innovation Solution
A drive assistance device equipped with ride sensors that detect the rider's attitude and adjust automatic control outputs, such as brake and steering, based on the detected attitude to minimize disturbances, using grip and step sensors to monitor grip states and oscillations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic brake control is actuated with standard output, then braking effectiveness is improved, but rider attitude disturbance increases when rider is in irregular position
Solution Approach 1:
The brake output is dynamically adjusted based on real-time detection of rider attitude. When the rider is detected to be in an irregular position (e.g., one-hand driving), the controller automatically reduces the brake output to minimize disturbance to the rider's attitude, while maintaining effective braking capability when the rider is in a regular position.
Solution Approach 2:
The system changes the brake output parameter according to the detected rider attitude state. By monitoring grip sensor data and determining whether the rider is in a regular or irregular position, the controller modifies the brake force parameter to resolve the contradiction between braking effectiveness and rider comfort.
2Speed
If automatic steering control is actuated with standard output, then steering responsiveness is improved, but rider attitude disturbance increases when rider is in irregular position
Solution Approach 1:
The steering output is dynamically adjusted based on real-time detection of rider attitude. When the rider is detected to be in an irregular position, the controller automatically reduces the steering output to minimize disturbance to the rider's attitude, while maintaining responsive steering when the rider is in a regular position.
Solution Approach 2:
The system changes the steering output parameter according to the detected rider attitude state. By monitoring grip sensor data and determining whether the rider is in a regular or irregular position, the controller modifies the steering force parameter to resolve the contradiction between steering responsiveness and rider comfort.
3Device complexity
If grip sensor only detects pressure, then sensor simplicity is improved, but rider attitude determination capability deteriorates
Solution Approach 1:
The grip sensor is designed to perform multiple functions: it detects not only the pressure applied to the grip but also the oscillation characteristics when the rider places their hand on the grip. This multi-functionality allows the simple sensor to provide sufficient information for determining rider attitude without increasing device complexity.
Solution Approach 2:
The controller analyzes the oscillation feedback from the grip sensor to determine rider attitude. When the rider places their hand on the grip, the sensor detects the oscillation, and the controller uses this feedback information to判断 whether the rider is in a regular or irregular position, thereby improving attitude determination capability without complicating the sensor design.
Data Source
AI summary
A drive assistance device (24) for a saddle type vehicle (1) includes a ride sensor (37) configured to detect a ride attitude of a rider (J), a vehicle body behavior generating part (25) configured to generate a behavior on a vehicle body by a prescribed output, and a controller (27) configured to control driving of the vehicle body behavior generating part (25), the vehicle body behavior generating part (25) includes a brake device (BR) configured to brake a host vehicle, and wherein, when the brake device (BR) is actuated regardless of an operation of the rider (J), the controller (27) actuates the brake device (BR) according to the ride attitude of the rider (J) detected by the ride sensor (37).