A FPGA-based wireless trigger system and method

Abstract

An FPGA-based wireless trigger system and method belong to the field of trigger control. The wireless trigger system of the present invention mainly comprises FPGA baseband processing module, D / A digital-to-analog conversion module, radio frequency transceiver module, A / D analog-to-digital conversion module, power supply module; The BPSK-OFDM signal that FPGA baseband processing module produces passes D / A digital The analog conversion module and the RF transceiver module up-convert the frequency to 2.4GHz and transmit it through the antenna. The receiving antenna converts the received signal back to the baseband signal through the RF transceiver module, and then transmits it to the FPGA through the A / D analog-to-digital conversion module. The received signal and the local signal are detected and judged by fast sliding correlation. If the correlation detection result is greater than the set threshold, it will be triggered. The invention adopts a wireless trigger mode, has strong adaptability to the environment, and has a wide application range; the code group ZCZ code with good correlation characteristics is selected as the trigger signal, which is not easily disturbed by noise and has a high detection success rate; the receiving end adopts the "detection while receiving" mechanism , Data receiving and detection are completed at the same time, which greatly shortens the trigger time.

Description

technical field [0001] The invention belongs to the field of trigger control, and in particular relates to an FPGA-based wireless trigger system and method. Background technique [0002] In some areas with relatively high risk, places where wired wiring is not convenient, places with high mobile performance requirements and widely distributed application places, the traditional wired trigger can no longer meet the needs of the system. [0003] With the advancement of wireless communication technology, the demand for wireless triggering and control technology in various fields is gradually increasing. In some specific fields, wireless triggering and control technology often puts forward higher requirements for the synchronization of the system and the reliability of data transmission. For example, in land seismic exploration work, due to the complex terrain and wide range of operations, it is inconvenient to use wired transmission. In many cases, wireless trigger control tec...

AI Technical Summary

Problems solved by technology

[0004] In the existing wireless trigger control system, single-chip microcomputer, DSP, etc. are often used as the control unit of the remote control system, but due to its own working characteristics, it is often weaker than FPGA in terms of precise timing control and parallel processing capabilities.

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