Vehicle Gesture Detection Validation Using Dual Sensor Time Comparison
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Solution Overview
Problem
Existing vehicle gesture detection systems often result in erroneous detection of input command gestures, leading to accidental actuation of components like sunroofs, windows, and air vents, due to the lack of effective validation mechanisms.
Innovation Solution
A method and system utilizing a first sensor to detect a human body part and a second sensor with a greater detection range to validate the gesture, comparing time values to determine a valid input command gesture, thereby reducing erroneous detections by ensuring a valid gesture duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gesture detection sensors are used to replace conventional switches, then ease of operation is improved, but reliability deteriorates due to erroneous detection
Solution Approach 1:
A validation sensor is introduced as an intermediary between the gesture detection sensor and the control system. The validation sensor acts as a mediator that verifies whether a detected gesture is genuine or erroneous by checking if the object remains within the detection zone for a predetermined time period, thus preventing erroneous actuation while maintaining ease of operation
Solution Approach 2:
The system implements feedback by continuously monitoring the presence of the object in the detection zone and using this information to validate or reject the gesture command. The control unit receives feedback from both the detection sensor and validation sensor to determine whether to execute the commanded operation, thereby improving reliability
2Device complexity
If a single sensor is used for gesture detection, then device complexity is reduced, but measurement precision deteriorates due to inability to validate gestures
Solution Approach 1:
The detection function is segmented into two distinct sensors: a primary gesture detection sensor and a secondary validation sensor. Each sensor has a specific role - the first sensor detects the gesture command while the second sensor validates it by confirming continuous presence, thereby improving measurement precision without excessive complexity
Solution Approach 2:
The validation sensor provides an additional layer of detection that goes beyond the basic gesture detection requirement. This excessive action of having redundant detection capability ensures high measurement precision by validating gestures through time-based confirmation
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 significantly reduces accidental actuation of vehicle components by validating gestures based on time duration, minimizing noise and interference-induced errors, thus enhancing the reliability of gesture-controlled operations.
Implementation Method 1
The first sensor means and second sensor means may comprise infra-red sensor means
Data Source
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AI summary
Embodiments of the present invention provide for a system and method for reducing erroneous detection of input command gestures. The method is performed by the system and includes storing a reference time value of when a presence of a human body part is detected by a first sensor and storing a further time value of when a presence of a human body part is detected by a second sensor. The reference time value and further time value are compared to provide a difference value which is used to determine a valid occurrence of an input command gesture.