Sonar control circuit

Abstract

The invention relates to the technical field of underwater acoustic signal control, in particular to a sonar control circuit. Comprising a DSP minimum system which is mainly used for realizing complex sample emission signal generation, PWM (Pulse Width Modulation) generation and complex signal processing; the MCU minimum system is mainly used for realizing data communication, acquisition and recording; the FPGA minimum system is mainly used for realizing multi-channel data acquisition and control; the peripheral interface is used for acquiring, transmitting and recording all data; the power supply module provides a stable and reliable power supply for the whole sonar control circuit; the DSP minimum system is communicated with the MCU minimum system in an SPI bus mode, the MCU minimum system is in data transmission with the FPGA minimum system in an FMC parallel bus mode, and the DSP minimum system is in data communication with the FPGA minimum system in an EMIF parallel bus mode. A command of a display and control console can be received according to a default set signal sample or through a network interface, a CAN bus interface and an RS422 bus interface, and a transmitting signal source is generated after the command is analyzed.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic signal control, in particular to a sonar control circuit. Background technique [0002] The basic situation of traditional technology: underwater communication, detection, target recognition is currently the most effective way to complete through sonar, the current sonar can be loaded on different application platforms, including UUV, AUV, USV, ships, frogmen, underwater robots, etc. A complete sonar system mainly includes three parts: transmitting, receiving and controlling. The traditional sonar control circuit mainly relies on single chip microcomputer to realize the functions of sonar transmission, reception and control mainly through data acquisition, serial communication, signal source PWM and other functions. [0003] The traditional sonar control circuit mainly has the following shortcomings: 1) The communication interface is single and the number is small: the traditional ...

AI Technical Summary

Problems solved by technology

1) The communication interface is single and the number is small: the traditional sonar control circuit mainly relies on the serial port to realize the communication, and the transmitted data includes the azimuth angle, pitch angle, roll angle, pressure, temperature and humidity information of the sonar system, etc., and the serial port communication exists The shortcomings of low communication rate, short transmission distance and poor reliability

[0004] 2) Low processing performance and poor real-time response: The traditional sonar control circuit mainly uses a single-chip microcomputer as a processor. The main frequency of the single-chip microcomputer usually does not exceed 200MHz, and it cannot perform multi-tasking mode

It can only perform simple data acquisition and control work, and does not have the functions of complex signal processing and calculation of sound wave sample points

[0005] 3) Does not have log and key data recording functions: the traditional sonar control circuit uploads the information generated by control and processing in real time through the communication interface, cannot collect control and monitoring data, and it is difficult to reproduce important control status information and analysis

[0006] 4) Fewer data collection and monitoring channels: the traditional sonar control circuit has only dozens of channels for collection and control channels. The current sonar system is becoming more and more complex, and the sonar control system needs to control, collect, process, and monitor channel data volume There will be more and more, the current channel control capability is not enough to support the current sonar system

1) Solve the problems of single communication interface, low communication rate and poor adaptability

[0008] 2) Solve the problem of weak signal processing ability and inability to perform complex signal processing and control

[0010] 4) Solve the problems of less detection and control channels and weak control capabilities

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