Fault detection method for phased array three-dimensional acoustic camera sonar system

A technology of fault detection and camera sound, which is used in the re-radiation of sound waves, radio wave measurement systems, measurement devices, etc., to simplify the complexity of hardware circuits, improve the efficiency of fault detection, and optimize the detection stage.

Active Publication Date: 2016-09-28
ZHEJIANG UNIV
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Problems solved by technology

[0012] (6) The BIT must be designed to be fail-safe, and a failure or wiring error of the BIT circuit itself should result in a failure indication;

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  • Fault detection method for phased array three-dimensional acoustic camera sonar system
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  • Fault detection method for phased array three-dimensional acoustic camera sonar system

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Embodiment Construction

[0042]In order to describe the present invention in more detail, the method of the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0043] Such as figure 1 As shown, the three-dimensional acoustic camera sonar system includes a main control computer PC, a communication processor CPU, a main signal processor FPGA, a sub-signal processor FPGA, a chip state detector (using a high-reliability single-chip microcomputer), an analog multiplexer, Echo simulator and hydroacoustic transducer.

[0044] After power-on, the communication processor CPU, the main signal processor FPGA, and the sub-signal processor FPGA send the OK signal to the chip status detector, and the chip status detector sends the signal to the main control computer PC through the RS485 serial port. Data interaction between the main control computer PC and the communication processor CPU through Gigabit Ethernet, data interaction between the communicatio...

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Abstract

The invention discloses a fault detection method for a phased array three-dimensional acoustic camera sonar system. The method includes a step 1 of main chip electrifying start state detection; a step 2 of system data link transmission state detection; a step 3 of front-end large-scale signal conditioning circuit and A / D collection circuit state detection; a step 4 of state detection of a wave beam forming algorithm module of a complex high-speed digital system. According to the invention, BIT design requirements are taken as the rule, faults of the three-dimensional acoustic camera sonar system are positioned automatically and accurately, the detection coverage rate is high, the fault positioning period is short and the equipment testability is improved substantially.

Description

technical field [0001] The invention relates to the technical field of three-dimensional acoustic imaging, in particular to a fault detection method for a phased array three-dimensional acoustic imaging sonar system. Background technique [0002] The phased array 3D acoustic imaging sonar system is a new type of real-time 3D imaging sonar. It uses a sound pulse to transmit the entire observation volume, and uses phased array technology to simultaneously generate tens of thousands of real-time received beam signals. After real-time signal processing, the 3D image is obtained. sonar image. The phased array three-dimensional acoustic camera sonar system is a rather large electronic product, which is a large-scale electronic device with specific functions composed of tens of millions of components, parts, and structural parts. Its characteristics are that the system is complex, composed of two parts above water and underwater, with electromechanical integration, digital simulat...

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Application Information

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IPC IPC(8): G01S7/52
CPCG01S7/52004G01S15/8993
Inventor 陈耀武田翔李晓鹏
Owner ZHEJIANG UNIV
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