Lidar Sensing Area Configuration via Trigger Line
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Solution Overview
Problem
Conventional lidar sensors are limited in their ability to scan specific areas desired by users, as they typically operate within predetermined angle ranges, making it impossible to adjust the sensing area to meet user-defined requirements.
Innovation Solution
A lidar system comprising a sensing area unit that sets and manages a user-defined sensing area, a light output unit that outputs light at specific angles to form a trigger line, and a sensing unit that determines the measured angle and light arrival time, allowing for the detection of objects within the designated area, along with a viewer device that designates, transmits, and monitors the sensing area using orthogonal and spherical coordinate systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lidar sensor scans in a predetermined angle range, then the scanning operation is simple and stable, but it is impossible to scan a user-desired area
Solution Approach 1:
The patent implements dynamic adjustability of the sensing area by allowing users to freely set the angle range and position of the sensing area through a simple interface. The system dynamically adapts the scanning parameters (start angle, end angle, position) according to user needs, transforming a static predetermined scanning system into a dynamic configurable one without increasing hardware complexity
Solution Approach 2:
The patent changes the scanning parameters (angle range, position, shape) to enable flexible sensing area configuration. By allowing users to modify these parameters through a simple interface, the system can adapt to different sensing requirements while maintaining the same physical sensor, thus improving versatility without adding device complexity
2Adaptability or versatility
If multiple lidar sensors are used to cover different areas, then various sensing requirements are met, but the system becomes more complex and expensive
Solution Approach 1:
The patent makes a single lidar sensor universal by enabling it to perform multiple sensing tasks through configurable parameters. The same physical sensor can be adjusted to scan different areas, angles, and shapes according to user needs, replacing the need for multiple dedicated sensors for different purposes. This multi-functionality is achieved through software control rather than hardware multiplication
Solution Approach 2:
The system dynamically reconfigures the sensing area parameters (angle range, position, shape) of a single sensor to meet different sensing requirements. Instead of using multiple fixed sensors, one sensor dynamically adapts its scanning parameters to cover various areas, reducing the total number of sensors needed while maintaining flexibility
3Ease of operation
If the sensing area is fixed in advance, then the system operation is simple, but it cannot be adjusted to meet user-defined requirements
Solution Approach 1:
The patent enables easy user control by allowing modification of scanning parameters (start angle, end angle, position, shape) through a simple interface. Users can define custom sensing areas by adjusting these parameters without dealing with complex hardware configurations. The system handles the complexity of parameter interpretation and sensor control internally, keeping the user interface simple while providing extensive configurability
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 the user to set and monitor specific sensing areas with a single lidar sensor, increasing its versatility for various applications by allowing the detection of objects within the defined area, enhancing the system's usability and simplicity.
Implementation Method 1
a sensing unit configured to sense an object in the specific sensing area by using a reflection light of the outputted light
Data Source
AI summary
A lidar sensor comprises a sensing area unit configured to set a sensing area in a maximum scan angle range and manage the set sensing area, a light output unit configured to output a light with a specific angle so that the light is outputted to a specific sensing area, and a sensing unit configured to sense an object in the specific sensing area by using a reflection light of the outputted light. The outputted light forms a trigger line, the sensing unit obtains a measured angle and a light arrival time of the sensed object based on the trigger line, and a minimum distance and a maximum distance from the lidar sensor to the specific sensing area are set based on the trigger line.