Motorcycle Radar Blind Spot Detection Lean Angle Compensation
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Solution Overview
Problem
Motorcycle blind spot detection systems are inadequate due to larger blind spots and the changing viewable area in side mirrors caused by lean angles, increasing the risk of collisions.
Innovation Solution
A blind spot detection system for motorcycles that uses an accelerometer, gyroscope, and a detection device, such as a radar sensor or phased-array antenna assembly, to maintain the sensor's position relative to the gravity force vector, compensating for lean angles and detecting vehicles in blind spots independently of the motorcycle's orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a motorcycle uses traditional side mirrors for blind spot detection, then the system is simple in structure, but the detection accuracy deteriorates due to larger blind spot areas and changing viewable areas caused by lean angles
Solution Approach 1:
The patent replaces traditional mechanical mirror-based detection with radar sensors that emit electromagnetic waves to detect vehicles in blind spots. The radar system uses electronic signal processing instead of optical reflection, eliminating the limitations of mirror visibility and providing accurate detection regardless of motorcycle lean angle.
Solution Approach 2:
The patent employs accelerometers and gyroscopes to detect changes in the motorcycle's lean angle and dynamically adjusts the radar sensor's detection parameters and beam steering accordingly. This allows the system to maintain accurate blind spot detection across varying motorcycle orientations by changing detection parameters in real-time.
2Measurement precision
If the detection device is rigidly mounted to the motorcycle, then the device complexity is reduced, but the detection accuracy deteriorates when the motorcycle leans during turns
Solution Approach 1:
The patent implements a dynamic mounting system where the radar sensor can rotate and adjust its orientation based on the motorcycle's lean angle. The sensor is coupled with a rotation mechanism that actively changes its detection direction to compensate for motorcycle tilting, maintaining optimal detection positioning throughout the turn.
Solution Approach 2:
The system uses feedback from accelerometers and gyroscopes that continuously monitor the motorcycle's orientation and lean angle. This feedback is processed to determine the appropriate compensation angle, which then controls the radar sensor's rotation mechanism to maintain accurate blind spot detection despite motorcycle movement.
3Measurement precision
If the radar sensor rotates to compensate for lean angle, then the detection accuracy is improved, but the device complexity increases due to additional mechanical components
Solution Approach 1:
The patent replaces complex mechanical rotation mechanisms with electronically steerable radar technology. Instead of physically moving the entire radar antenna through mechanical gears and motors, the system uses phased array or electronically controlled beam steering to redirect the detection beam, achieving the same compensation effect with minimal mechanical components.
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
Enables effective detection of surrounding vehicles in blind spots, reducing the risk of collisions by maintaining sensor alignment relative to the gravity force vector, regardless of the motorcycle's lean angle.
Implementation Method 1
The accelerometer detects a gravity force vector
Implementation Method 2
the gyroscope detects the position of the motorcycle relative to the gravity force vector such that a lean angle of the motorcycle is calculated
Implementation Method 3
The detection device is a radar sensor
Data Source
AI summary
A blind spot detection system for a motorcycle, which includes an accelerometer, a gyroscope, and a detection device for detecting the presence of a vehicle in at least one blind spot. The accelerometer detects a gravity force vector, and the gyroscope detects the position of the motorcycle relative to the gravity force vector such that a lean angle of the motorcycle is calculated. The detection device is then configured to maintain the same position of the motorcycle relative to the gravity force vector and compensate for the position of the motorcycle if the lean angle is greater or less than 90°, such that the detection device is able to detect the presence of the vehicle in the at least one blind spot, independent of the lean angle of the motorcycle.