A Dual-directional Information Transmission Method for Fuze Wireless Setting System Based on Nonlinear Parity-time-symmetry

The principle of nonlinear parity-time-symmetric wireless power transfer can be used to improve the flexibility and adaptability of fuze wireless setting system, but the problem of dual-directional information transmission between transmitter and receiver should be solved. The differential equations of the setting system are established to obtain the theoretical relationship between the transient response characteristics of voltage and current and the transmission parameters based on the mutual inductance coupling theory. A power and information synchronous transmission method of non-return-to-zero amplitude modulation is proposed, which can not only transmit power continuously, but also effectively shorten the starting and stopping vibration in the loop. The reverse transmission of information is realized by inducing the resonant frequency jump at the transmitter through the instantaneous detuning at the receiver, which has short detuning time and less negative impact on the power transmission. Finally, a principle prototype was designed based on the proposed theory. The forward information transmission rate is 20 kbit/s, and the reverse transmission rate is 12.8 kbit/s. The experimental results verify the correctness of the proposed model and the feasibility of the dual-directional information transmission method. © 2021, Editorial Board of Acta Armamentarii. All right reserved.