Vibration Detection System Using Vision Sensor and Radar
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Solution Overview
Problem
Conventional passenger detection systems in vehicles struggle to accurately detect vital information such as heart rate and respiratory rate due to difficulties in sensing micro vibrations caused by heartbeat and respiration.
Innovation Solution
A vibration detection system comprising a vision sensor and a radar, where the vision sensor specifies the position of a vibration source, and the radar acquires vibration information related to this position, enabling accurate detection of micro vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional passenger detection systems are used, then basic passenger presence can be detected, but micro vibrations related to vital information cannot be accurately detected
Solution Approach 1:
The patent combines a vision sensor and a radar into a single vibration detection system. The vision sensor detects the position of the vibration source while the radar detects micro vibrations at that position. This merging of two different sensing technologies enables accurate detection of vital information while maintaining a manageable system structure through coordinated operation.
Solution Approach 2:
The vision sensor acts as an intermediary that identifies and provides position information about the vibration source to the radar. This intermediary function allows the radar to focus its detection on specific areas of interest, improving vibration detection precision while avoiding the need for the radar to scan entire areas independently.
2Measurement precision
If the vision sensor and radar are used separately, then individual functions are simple, but integrated vibration detection accuracy is insufficient
Solution Approach 1:
The system implements feedback by using the vision sensor to continuously monitor and identify the position of the vibration source, then feeding this position information to the radar for targeted vibration detection. This feedback loop ensures that the radar always focuses on the correct area, improving position accuracy while the automated coordination reduces operational complexity.
Solution Approach 2:
The vision sensor performs preliminary action by detecting and specifying the position of the vibration source before the radar begins its vibration detection. This preliminary positioning ensures that when the radar detects vibrations, it is already focused on the correct target, improving overall detection accuracy without requiring complex real-time coordination.
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 system effectively detects micro vibrations caused by heartbeat and respiration, providing accurate vital information of passengers within a vehicle environment.
Implementation Method 1
the acquisition unit acquires vibration information related to vibration at the specified position of the vibration source by the radar
Data Source
AI summary
A vibration detection system according to the present disclosure includes a vision sensor (55), a radar (56), and a control unit that controls the vision sensor (55) and the radar (56). Furthermore, the control unit includes a specifying unit (74) and an acquisition unit (75). The specifying unit (74) specifies a position of a vibration source in a measurement target by the vision sensor (55). The acquisition unit (75) acquires vibration information related to vibration at the specified position of the vibration source by the radar (56).