PRESENCE-BASED VEHICLE ACCESS DOOR RELEASE USING DIGITAL KEY LEVERAGING ULTRASONIC SENSING

Smart overview of the Invention

A method for controlling vehicle access utilizes a combination of a digital key generated by a mobile device and ultrasonic sensing technology. This approach allows for convenient entry into a vehicle's interior through an access door that is selectively opened based on the presence of the user nearby. This method enhances security and user experience by ensuring that only authorized individuals can unlock the vehicle.

Digital Key Signal Generation

The process begins with the generation of a digital key signal from a mobile device, such as a smartphone, held by the vehicle user. This signal is then received by a virtual key control module (VKCM), which communicates it to the vehicle controller. The system is designed to operate even when the vehicle is in a sleep mode, waking up the necessary components upon receiving the digital key signal.

Ultrasonic Sensing for User Detection

An ultrasonic sensing arrangement detects the presence of the vehicle user within a specific range of the access door. This technology collects data from the surrounding area, determining whether the user is close enough to warrant unlocking the door. By combining this detection capability with the digital key signal, the system ensures that access is granted only when both conditions are met.

Mechanism for Door Release

Upon confirming both the digital key signal and the user's presence, the vehicle controller commands a mechanism to release the access door. The system includes various components such as latches and release switches that facilitate this operation, allowing for seamless entry into both passenger and cargo areas of the vehicle.

Dynamic User Trajectory Analysis

The ultrasonic sensing arrangement also analyzes the user's trajectory to confirm their stationary position before granting access. By measuring movement along predetermined paths relative to the vehicle's structure, it can determine if the user is eligible for entry based on their proximity and duration of presence. This sophisticated analysis further enhances security while providing convenience for users.