Self-noise test system and level test method for ship sonar platform
An experimental test and self-noise technology, which is applied in radio wave measurement systems, sustainable transportation, instruments, etc., can solve the problems of lack of test data verification, achieve the effect of improving work efficiency, strong applicability, and avoiding frequency band testing
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Embodiment 1
[0025] A self-noise test system for a ship sonar platform, the test system includes a computer, a signal source generator, a power amplifier, a signal transmitting component composed of an excitation source, a hydrophone, a signal receiving converter, a band-pass filter, a signal A signal acquisition and processing recording component composed of a collector and a computer for collecting signals; if the signal collector has a band-pass filter function, the band-pass filter can be removed, and the signal receiving converter is directly connected to the signal collector;
[0026] The instruments and equipment are connected and transmitted through data transmission lines. The excitation sources include the excitation of the composite rod piezoelectric exciter for simulating hydrodynamic noise, the excitation of high-power broadband pulse mechanical exciter for simulating mechanical vibration noise, and the excitation for simulating propeller water-borne noise. dipole emitting tran...
Embodiment 2
[0033] combine figure 1 A ship sonar platform self-noise test and test system is mainly composed of a computer, a signal source generator, a power amplifier, an excitation source, a hydrophone, a signal receiving converter, a band-pass filter, and a signal collector. The excitation source is connected to the computer to form the excitation source signal transmitting end through the signal data transmission line through the power amplifier and the signal source generator; The acquisition computer is connected to form a signal acquisition recording terminal;
[0034] Excitation sources include composite rod piezoelectric exciter excitation for simulating hydrodynamic noise, high-power broadband pulse mechanical exciter excitation for simulating mechanical vibration noise, and dipole transmitting transducer excitation for simulating propeller water-borne noise;
[0035] The composite rod piezoelectric exciter for simulating hydrodynamic noise is excited through the fixed device ...
Embodiment 3
[0039] When multiple noise sources are tested independently or in parallel, a self-noise test system for a ship sonar platform is as follows: figure 2 As shown, the system includes a computer 1, an arbitrary function signal generator 2, a first power amplifier 5 and a hydrodynamic noise simulation part composed of a symmetrically installed simulated hydrodynamic noise excitation source 8, a computer 1, an acquisition instrument transmitter 3, The bulkhead vibration mechanical noise simulation part composed of the second power amplifier 6 and the simulated mechanical noise excitation source 10 high-power broadband pulse mechanical exciter, the computer 1, the signal source 4, the second power amplifier 7 and the simulated propeller noise excitation source 11 The propeller noise simulation part formed by the dipole transmitting transducer, and the data acquisition part formed by the array position hydrophone 12, the data collector 13 and the data acquisition computer 14; the set...
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