Vehicle Clearance Detection Using 3D Time-of-Flight Sensing
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Solution Overview
Problem
Conventional exterior detection systems for vehicles lack efficient methods to optimize spatial availability and maneuvering around obstructions using time-of-flight technology.
Innovation Solution
A vehicle system incorporating time-of-flight sensors to capture positional information, calculate available positions, and adjust powertrain and steering systems to enhance spatial utilization and maneuvering, including features like blind spot detection, park assist, and obstacle avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional exterior detection systems are used, then basic obstacle detection is achieved, but spatial optimization and maneuvering efficiency are insufficient
Solution Approach 1:
The system transitions from traditional 2D proximity detection to 3D spatial mapping by incorporating time-of-flight sensors that measure distance in three-dimensional space. This enables the vehicle to detect and utilize vertical clearance space above extensions, allowing maneuvers that were previously impossible with conventional 2D detection systems.
Solution Approach 2:
The system dynamically adjusts the vehicle's maneuvering parameters based on real-time 3D spatial data. The control system continuously processes depth information from time-of-flight sensors and dynamically modifies steering, acceleration, and braking commands to optimize passage through constrained spaces with overhead obstructions.
2Measurement precision
If time-of-flight sensors are added to capture positional information, then spatial detection precision is improved, but system complexity increases
Solution Approach 1:
The time-of-flight sensor system serves multiple functions: it detects overhead obstructions, maps 3D spatial geometry, calculates available clearance volumes, and provides data for both planning and execution phases of maneuvers. This multi-functionality justifies the added sensor complexity by consolidating multiple detection needs into a single sensor type.
Solution Approach 2:
The system combines time-of-flight sensing with existing vehicle control systems, merging spatial detection data directly into the maneuvering control architecture. This integration approach reduces overall system complexity by eliminating separate detection and control systems that would otherwise be needed.
3Reliability
If the system calculates available positions based on obstruction data, then maneuvering safety is improved, but processing time increases
Solution Approach 1:
The system performs preliminary 3D spatial mapping and obstruction detection before the vehicle enters constrained areas. By pre-calculating available clearance volumes and identifying safe passage corridors in advance, the system reduces real-time computation requirements during actual maneuvering, thereby maintaining safety while minimizing processing delays.
Solution Approach 2:
The system implements continuous feedback loops where real-time sensor data is compared against pre-calculated spatial models. This allows the system to quickly determine whether current vehicle positions and velocities are safe, enabling rapid decision-making without requiring complete recalculation of spatial parameters.
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
Enhances spatial utilization and maneuvering by providing precise positioning and obstacle detection, allowing for safer and more efficient vehicle movement.
Implementation Method 1
at least one time-of-flight sensor configured to capture positional information about an obstruction outside the vehicle
Data Source
AI summary
A vehicle includes a passenger compartment having a side and an upper wall extending from the side in an upper plan. The vehicle further includes an extension extending from the side of the passenger compartment to an end that extends in an end plane. The vehicle further includes at least one time-of-flight sensor configured to capture positional information about an obstruction outside the vehicle. The vehicle further includes control circuitry in communication with the at least one time-of-flight sensor. The control circuitry is configured to define a space above the extension between the side, the upper plane, and the end plane. The control circuitry is further configured to calculate, based on the positional information, an available position for the vehicle having the obstruction in the space. The control circuitry is further configured to generate an output in response to the available position.