## 5 Experimental Verification  
Based on the proposed power and information synchronous transmission method, an experimental platform is built to verify the MASK modulation power and signal transmission scheme based on PSFB. The experimental platform is shown in Figure 9. The experimental platform consists of a power supply part, a transmitting part and a receiving part. The transmitting part includes transmitting coil and resonant capacitor. The receiving part includes a receiving coil, resonant capacitor, load and signal-extraction part. The system parameters are shown in Tables 1 and 3. Figure 8: System transmission rate diagram. Figure 9: Experimental setup. According to Figure 5 and Table 2, 16 ASK modulation is performed. Figure 10 shows the 750 baud rate 16 ASK modulation signal transmission. The experiment provided a continuous signal 'F20C13B48A5E67D9'. The bit rate of information transmission is 3 kbps. Rectifier voltage, envelope filter voltage and differential amplifier voltage waveforms are shown in Figure 10a. \(R_{7}\), \(R_{9}\) is 35 k\(\Omega\) and \(R_{8}\), \(R_{10}\) is 40 k\(\Omega\), so the differential amplifier amplification factor is 1.14. Voltage transferred through the ADC analog-to-digital conversion signal data with the use of a 485 communication in the computer serial assistant is displayed. As shown in Figure 10b, the ADC is a 12-bit precision, and the transmission signal corresponding to the signal data is marked in the figure. The range of ADC acquisition is 3 V, which corresponds to the digital quantity of 4095, and the signal data are about 800. The signal can be obtained by comparing the data or using the algorithm. In the experiment, all the collected data are stored in the array, and the signals are obtained by comparing and judging the data in the array. The transmitting communication unit tests the bit error rate of signal transmission, including 1 bit starting bit, 8 bit data bit and 1 bit stop bit. The method proposed in this paper belongs to amplitude modulation power and information synchronous transmission technology. The signal is reflected and transmitted by the change in voltage amplitude, and the voltage amplitude of the system is affected by many factors, such as the disturbance of the DC power supply, the change in load and the offset of the coupling coil. These factors also affect the signal transmission error rate. The premise of the test is that the system maintains a fixed power output, a fixed load and a fixed position of the two coupling coils. Finally, the test result demonstrates that the signal transmission error rate is 0, and there is no error code in the whole test process. Figure 11 raises the baud rate to 1500. Signal transmission through 16 ASK modulation increases the bit rate to 6 kbps. It can be seen from the diagram that as the baud rate increases, the difficulty of data judgment becomes larger, and error bits may occur. A better data judgment method or algorithm will reduce the bit error rate of the system, which will be a subsequent improvement direction of the signal transmission method. \begin{table}
\begin{tabular}{c c c} \hline \hline
**Parameters** & **Symbol** & **Value** \\ \hline Resistances & \(R_{1},R_{12}\) & 2 k\(\Omega\) \\ Resistances & \(R_{2},R_{3},R_{4},R_{13},R_{14}\) & 20 k\(\Omega\) \\ Resistances & \(R_{5},R_{6},R_{11}\) & 500 \(\Omega\) \\ Envelope capacitance & \(C_{1}\) & 10 μF \\ Smoothing capacitances & \(C_{2},C_{3}\) & 100 μF \\ Supply voltage & \(U_{o}\) & 16 μV \\ Reference voltage & \(U_{net}\) & 8 V \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Demodulation circuit parameters. Figure 10: A 750 baud rate 16 ASK modulation information transmission diagram: (**a**) Demodulation circuit waveform; (**b**) ADC conversion voltage data diagram. Demodulation in this paper is essentially envelope detection, which belongs to non-coherent demodulation and is easier to implement than coherent demodulation.