Focused Ultrasonic Interaction for Secure On-Board Data Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ultrasonic transducer systems lack secure and efficient methods for remote data transfer and function activation, particularly in applications where precise control and safety are crucial.
Innovation Solution
An on-board interaction system using PMUT type piezoelectric transducers arranged in matrices and sub-matrices, controlled by a module to generate focused ultrasonic acoustic pulses, allowing secure data transfer and remote mechanical actions within a limited emission cone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If ultrasonic transducers are used for remote data transfer and function activation, then interaction capability is improved, but security and control precision are worsened due to lack of confined interaction zone
Solution Approach 1:
The patent introduces an ultrasonic acoustic field as an intermediary medium to transfer data and activate functions remotely. The focused ultrasonic pulses serve as the mediator between the transmitter and receiver, enabling secure interaction without direct contact or exposed electromagnetic signals.
Solution Approach 2:
The patent applies focal concentration to create a localized interaction zone where ultrasonic energy is concentrated at a specific point in space. This local quality ensures that only devices within the focal region can receive or be activated by the ultrasonic pulses, providing spatial security and control precision.
2Force
If a large surface area of ultrasonic transducers is used to generate strong acoustic pressure, then interaction effectiveness is improved, but device size and integration complexity are worsened
Solution Approach 1:
The patent divides the ultrasonic transducer array into multiple segments or elements that can be independently controlled. By segmenting the transducer surface, the system achieves focused acoustic pressure through constructive interference at the focal point without requiring a single large transducer surface.
Solution Approach 2:
The patent transitions from a two-dimensional transducer surface to a three-dimensional focal point in space. By using phased array control, the system concentrates acoustic energy from multiple transducer elements at a specific point in the third dimension, achieving high acoustic pressure without increasing the transducer surface area.
3Length of moving object
If ultrasonic pulses are transmitted over long distances, then interaction range is improved, but acoustic pressure and signal strength are worsened
Solution Approach 1:
The patent applies preliminary focusing by pre-calculating and pre-positioning the phase and amplitude of each transducer element to concentrate energy at the desired focal point before the ultrasonic pulses are emitted. This preliminary action ensures that the acoustic energy is already concentrated at the target location, maintaining high pressure over distance.
Solution Approach 2:
The patent uses dynamic phase and amplitude control of individual transducer elements to adapt the focal point position and maintain acoustic pressure over varying distances. The system can dynamically adjust the beam forming parameters to track and maintain focus at different ranges.
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
Enables secure and efficient remote data transfer and function activation by generating high acoustic pressure with optimized surface integration and precise wave focusing, ensuring interactions are confined to a controlled volume.
Implementation Method 1
Each ultrasonic transducer includes a flexible membrane suspended on a rigid support and a piezoelectric conversion element attached to the flexible membrane
Implementation Method 2
generate at least one focused stream of ultrasonic acoustic waves, called an ultrasonic acoustic pulse
Implementation Method 3
A control circuit controls the transmission of the transducers with phase shifts between the different transducers so as to focus the emitted waves at a given focal point
Implementation Method 4
said at least one ultrasonic acoustic pulse carries a directional pressure adapted to actuate a predetermined function in the receiving device
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to an on-board interaction system comprising a set of ultrasonic transducers (3) controllable by a control module (5) to generate at least one focused flow of ultrasonic acoustic waves, called an ultrasonic acoustic pulse, configured to interact with at least one destination device (7) provided with a receiver module (9) sensitive to said at least one ultrasonic acoustic pulse.