A time-division multiplexing high-power phased array ultrasonic signal generator

Abstract

The invention provides a time division multiplexing high power phased array ultrasonic signal generating device, which is mainly used for ultrasonic test of concrete structure. The device comprises a host computer control end, an on-site programmable logic gate array, a time division multiplexing high voltage pulse amplifying circuit, an ultrasonic transducer array and a data distributor. The on-site programmable logic gate array is connected to an input end of the time division multiplexing high voltage pulse amplifying circuit; the input end of the data distributor is respectively connected with a signal control output end of the on-site programmable logic gate array and the output end of the time division multiplexing high voltage pulse amplifying circuit; and the output end of the data distributor is connected with the ultrasonic transducer array. The device greatly reduces the circuit scale, reduces the volume of equipment, saves the cost of equipment, can produce a focusable sound beam used for industrial nondestructive testing of concrete structures, also can also adjust the pulse width of output signal for transducers with different center frequency; and the device reaches delay accuracy of Eta s level, and meets the requirements of the ultrasonic nondestructive test of concrete structure.

Description

technical field [0001] The invention belongs to the field of electronic science, and specifically relates to the use of time-division multiplexing technology, in particular to a time-division multiplexing high-power phased array ultrasonic signal generating device. Background technique [0002] Ultrasonic nondestructive testing technology plays a huge role in the development of modern industry. Compared with traditional single-probe ultrasonic testing technology, phased array ultrasonic nondestructive testing technology has the advantages of wide detection range, large depth and accurate positioning. The phased array probe is a transducer array composed of multiple transducers, and each transducer array is controlled by a high-voltage pulse signal. By controlling the delay of the excitation pulse, multiple ultrasonic signals with different phases are generated, so that they produce the effect of interference enhancement at the expected focal point. Changing the delay parame...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of large volume and high cost of some existing phased array ultrasonic signal generators on the market. According to the time division multiplexing technology of digital signals, the purpose of the present invention is to provide a small volume and low cost Phased array ultrasonic signal generating device, a high-power phased array ultrasonic signal generating device for instant division multiplexing, which generates focused sound beams, used for ultrasonic non-destructive testing of concrete structures in industry, and the delay accuracy can reach ns level. Meet the requirements of ultrasonic non-destructive testing of concrete structures

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