Vehicle Facial Recognition Gating for Low-Power Access Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicles equipped with camera-based access systems face issues of unnecessary power consumption due to leakage currents and frequent camera activation from false detections, which can be attributed to the camera constantly operating without proper object recognition.
Innovation Solution
A vehicle system incorporating a first sensor for distance measurement, a second sensor for temperature measurement, and a camera, where the processor activates the second sensor and camera only when specific conditions are met, such as a person approaching within a certain distance and temperature range, thereby controlling the door locking mechanism based on facial recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the camera operates constantly to enable user authentication, then access convenience is improved, but power consumption increases due to leakage current
Solution Approach 1:
The system performs preliminary detection using the first sensor (distance sensor) and second sensor (temperature sensor) before activating the camera. When an object is detected within a predetermined distance and its temperature is within the human body temperature range (36-37°C), the camera is activated for facial recognition. This preliminary filtering action prevents the camera from operating constantly, thereby reducing power consumption while maintaining access convenience.
2Reliability
If the camera operates constantly for authentication, then user authentication capability is improved, but false detection occurs frequently
Solution Approach 1:
The authentication process is segmented into multiple stages with different sensors performing specific functions. The first sensor detects distance to identify approaching objects, the second sensor measures temperature to distinguish human bodies from other objects, and the camera captures images for final facial recognition verification. This segmentation of detection functions reduces false detections by requiring multiple conditions to be met before triggering camera activation.
Solution Approach 2:
The second sensor (temperature sensor) acts as an intermediary between the first sensor (distance sensor) and the camera. It filters out non-human objects by detecting temperature within the human body range, thereby preventing false activations of the camera and improving the reliability of the authentication system.
3Measurement precision
If multiple sensors are added for object recognition, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
Each sensor in the system is designed with multi-functionality to reduce overall complexity. The first sensor serves both distance measurement and object approach detection functions. The second sensor provides both temperature measurement and human body identification functions. The camera performs both image capture and facial recognition verification. This universal design approach allows the system to achieve high detection accuracy without proportionally increasing device complexity.
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 solution effectively reduces power consumption by minimizing unnecessary camera activation and leakage currents, ensuring the camera only operates when a person is identified for facial recognition, thus optimizing power usage and preventing unauthorized access.
Implementation Method 1
a first sensor configured to measure a distance to an object
Implementation Method 2
a second sensor configured to measure a temperature of the object
Data Source
AI summary
In accordance with an aspect of disclosure, the vehicle includes a first sensor configured to measure a distance to an object; a second sensor configured to measure a temperature of the object; a camera configured to acquire an image of the object; and a controller configured to activate the second sensor when the distance to the object measured by the first sensor satisfies the condition for performing heat detection, and activate the camera when the temperature of the object measured by the second sensor satisfies a condition for performing facial recognition.