Multi-channel signal transmitting and receiving electronic system

Abstract

The invention provides a multi-channel signal transmitting and receiving electronic system, which comprises a control center used for generating a programmable signal; an isolator, which is used for isolating the digital electric signal from the analog optical signal; an H-bridge driver, which is used for generating a driving signal and sending the driving signal to the power MOSFET; a power MOSFET, which is used for receiving the driving signal and generating a power switching signal; a transformer, which is used for converting the power switch signal from low voltage to high voltage; an impedance matching network, which is used for improving acoustic-electric conversion efficiency and reducing signal reflection caused by impedance mismatching; a transducer, which is used for generating sound waves; a temperature sensor, which is used for collecting temperature information and sending the temperature information to the control center; a current sampling module, which is used for obtaining the current value of the power switch signal from the power MOSFET and sending the current value to the control center. According to the invention, a set of underwater acoustic signal acquisition and analysis system with high sensitivity, low noise and small volume can be formed.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of sonar, and in particular to an electronic system for transmitting and receiving multi-channel signals. Background technique [0002] Three-dimensional sonar imaging has a wide range of applications in seabed topography mapping, acoustic vision navigation, dam monitoring, bridge pier flaw detection, pipeline detection, and seabed detection. Since the signal in the underwater acoustic high-resolution 3D side-scan image sonar adopts modulation methods such as linear frequency modulation, the signal is no longer a simple signal with a single amplitude and frequency, so the multi-channel in the underwater acoustic high-resolution 3D side-scan image sonar Signal transmitting electronic system must be able to transmit high-power signals, and most of them work under water, which require high power, high efficiency, small size, program-controlled transmission and other characteristics. At pr...

AI Technical Summary

Problems solved by technology

At present, the underwater acoustic signal acquisition and analysis system in the industry pursues indicators such as a large dynamic range, resulting in large system power consumption, high noise, and low acquisition accuracy, which is not conducive to long-term underwater operation of image 3D sonar.

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