Ultrasonic Wave Frequency Combination for Data Transmission
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Solution Overview
Problem
Current ultrasonic wave-based communication methods suffer from high bit error rates and poor interference immunity, making them user-unfriendly and inefficient for data transmission.
Innovation Solution
A method and device for processing ultrasonic waves using a frequency combination of at least two different frequencies for coding and decoding, which reduces bit error rates and improves interference immunity by sending ultrasonic waves within a predetermined duration and using a wake-up frequency to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultrasonic wave coding is implemented using conventional methods, then data transmission can be achieved, but the bit error rate is high and interference immunity is poor
Solution Approach 1:
The patent segments the ultrasonic wave transmission into multiple frequency components. Instead of using a single frequency, the system divides the ultrasonic signal into multiple frequency bands (e.g., first frequency band and second frequency band), allowing the data to be encoded across these segmented frequency components. This segmentation improves reliability by providing frequency diversity, where if one frequency band is interfered with, other bands can still carry the information.
Solution Approach 2:
The patent transitions from single-frequency ultrasonic transmission to multi-frequency transmission by adding a frequency dimension. The system encodes data not only in the time domain but also utilizes multiple frequency dimensions simultaneously. This dimensional expansion allows the receiver to decode data by analyzing frequency combinations, significantly improving bit error rate performance and interference immunity.
2Reliability
If multiple frequencies are used for ultrasonic wave coding, then interference immunity improves, but the complexity of the coding and decoding process increases
Solution Approach 1:
The patent changes the frequency parameter of the ultrasonic wave from a single fixed frequency to multiple variable frequencies. By adjusting and selecting different frequency combinations to represent different data states, the system achieves better interference immunity. The receiver uses corresponding frequency detection algorithms to decode these frequency combinations, maintaining manageable complexity despite the increased frequency diversity.
Data Source
AI summary
A frequency combination corresponding to target data to be transmitted is determined. The frequency combination includes at least two different frequencies. Ultrasonic waves of frequencies in the frequency combination are sent within a predetermined duration.