A Novel Modulation and Demodulation Method Based on Binary Frequency Shift Keying for Wireless Power and Data-Parallel Transmission

Liu, Peizhou; Gao, Tiande; Zhao, Ruixuan; Mao, Zhaoyong; Zhu, Quanzhe

doi:10.3390/mi13091381

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…The DDS series AD9854 in this study is a direct digital frequency synthesis, and the frequency, amplitude, and phase of the output signal can be adjusted independently [6]. The rapid development of signal modulation technology has gradually realized the automatic identification and reception of signals, as well as the demodulation of signals [7][8].…”

Section: Introductionmentioning

confidence: 99%

Research on STM32-Based Signal Conditioning System Measurement System

Wei¹

2023

HSET

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The measurement of the signal modulation system is a vital part of channel transmission signal technology, which has a very important position in the signal communication quality assurance system. With the development of radio communications in modern radio technology, the research of AM and FM signal modulation measurement methods has become an important element in this field of research. This research is a signal modulation system using an STM32F407 microcontroller as the control core. The hardware of the system is mainly composed of a coherent demodulation circuit system and a comparator judgment circuit system, and the coherent demodulation circuit system is divided into AM demodulation circuit system and an FM demodulation circuit system. The frequency of the input signal was measured by a comparator, and the frequency change was used to initially determine the signal type. In which the modulating signal of AM signal was obtained by DDS generating separate orthogonal sine and cosine signals with the input signal through a series of operations, while the FM signal was operated with the sine signal. Finally, the amplitude and frequency information of the FM signal was obtained through the comparator, and finally reduced to the modulating signal of the FM signal. Output demodulated signal, its signal waveform without obvious distortion apparent phenomenon. Promotes the prospect of using the calibration of AM and FM signal generators in the field of communication.

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Section: Introductionmentioning

confidence: 99%

Research on STM32-Based Signal Conditioning System Measurement System

Wei¹

2023

HSET

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“…A review of the previous works related to the communication for WPT systems is presented in Table 1. In [12][13][14], the communication signal was modulated using power electronics that reduced the system complexity because no extra digital-to-analog converter (DAC) was needed for signal modulation. However, using this method, the data rate is limited due to the kHz-level WPT frequency used as a carrier for communication.…”

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confidence: 99%

A Bidirectional Wireless Power Transfer System with Integrated Near-Field Communication for E-Vehicles

Ye,

Parspour

2024

Vehicles

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This paper presents the design of a bidirectional wireless power and information transfer system. The wireless information transfer is based on near-field technology, utilizing communication coils integrated into power transfer coils. Compared with conventional far-field-based communication methods (e.g., Bluetooth and WLAN), the proposed near-field-based communication method provides a peer-to-peer feature, as well as lower latency, which enables the simple paring of a transmitter and a receiver for power transfer and the real-time updating of control parameters. Using the established communication, control parameters are transmitted from one side of the system to another side, and the co-control of the inverter and the active rectifier is realized. In addition, this work innovatively presents the communication-signal-based synchronization of an inverter and a rectifier, which requires no AC current sensing in the power path and no complex algorithm for stabilization, unlike conventional current-based synchronization methods. The proposed information and power transfer system was measured under different operating conditions, including aligned and misaligned positions, operating points with different charging powers, and forward and reverse power transfer. The results show that the presented prototype allows a bidirectional power transfer of up to 1.2 kW, and efficiency above 90% for the power ranges from 0.6 kW to 1.2 kW was obtained. Furthermore, the integrated communication is robust to the crosstalk from the power transfer and misalignment, and a zero BER (bit error rate) and ultra-low latency of 15.36 µs are achieved. The presented work thus provides a novel solution to the synchronization and real-time co-control of an active rectifier and an inverter in a wireless power transfer system, utilizing integrated near-field-based communication.

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