RF Object Mapping for Aboveground and Underground Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing moving devices, such as robotic cleaners, face challenges in accurately detecting aboveground and underground objects due to interference from environmental factors like color, light, and temperature when using infrared or ultrasonic sensors.
Innovation Solution
The implementation of a radio-frequency (RF) sensor system that radiates signals towards both aboveground and underground regions, allowing the device to generate maps indicating the distribution of objects by correcting signals based on characteristics and using learning models to identify and differentiate between aboveground and underground objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If infrared beam or ultrasonic waves are used for object detection, then the detection function can be implemented, but the detection accuracy is reduced due to environmental interference
Solution Approach 1:
The patent changes the detection parameter from infrared/ultrasonic waves to radio-frequency electromagnetic waves. RF waves operate at different frequencies that are less susceptible to environmental interference from light, temperature, and color variations, thereby maintaining detection reliability while improving measurement precision
Solution Approach 2:
The patent substitutes the detection mechanism by replacing infrared and ultrasonic sensing systems with radio-frequency sensing circuitry. This substitution enables the system to detect objects through electromagnetic radiation that penetrates various materials differently, reducing interference from environmental factors while maintaining detection capability
2Measurement precision
If RF sensor is used to detect both aboveground and underground objects, then the detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal RF sensing circuitry that performs multiple functions: detecting aboveground objects, detecting underground objects, and generating comprehensive maps. This multi-functional approach improves detection accuracy for both object types while avoiding the need for separate detection systems, thereby limiting the increase in device complexity
Solution Approach 2:
The patent segments the detection process by using the RF sensor to radiate signals in different directions (forward and downward) and processing reflected signals to distinguish between aboveground and underground objects. This segmentation enables accurate detection of both object types through a single integrated sensing system
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 approach enhances the accuracy of object detection and mapping, enabling the moving device to navigate and perform tasks more effectively by minimizing interference and accurately distinguishing between surface and subsurface objects.
Implementation Method 1
receive signals reflected from an aboveground object located on a ground in the task space and an underground object located under the ground in the task space
Data Source
AI summary
A moving device and an object detection method thereof are provided. A method, performed by a moving device, of generating a map related to an object in a task space includes radiating at least one sensing signal toward aboveground and underground regions in a vicinity of the moving device, receiving signals reflected from an aboveground object located on a ground in the task space and an underground object located under the ground in the task space, and generating the map indicating distribution of the aboveground object and distribution of the underground object, based on the received reflected signals.