Ultrasonic pulse transmitting-receiving system based on FPGA control

Abstract

The invention discloses an ultrasonic pulse transmitting-receiving system based on FPGA control. The ultrasonic pulse transmitting-receiving system uses FPGA as a control chip and utilizes VerilogHDL language for programming of hardware of a chip; and a PCI bus is employed for data transfer between a PC industrial control computer and a core controller. The system comprises an ultrasonic excitation module, a receiving module, a high-voltage protection module, a power supply module and a control module, wherein the receiving module comprises a primary amplification circuit, an optional low-pass filter circuit, a time gain compensating circuit and an optional high-pass filter circuit. The ultrasonic pulse transmitting-receiving system provided by the invention has a set of complete functions and has the advantages of good functions, stable performance, low power dissipation, reasonable cost and wide application occasions and development space.

Description

technical field [0001] The invention belongs to the field of ultrasonic testing, and in particular relates to an ultrasonic pulse transceiver system based on FPGA control. The system has good functions, stable performance, low power consumption and reasonable cost. , medical perspective and other fields have a wide range of applications and development space. [0002] Background technique [0003] Ultrasonic nondestructive testing, as one of the main components of nondestructive testing technology, occupies an extremely important position in the production process. Compared with the sound that can be heard every day, ultrasound has the characteristics of high energy, good directivity, energy concentration, and high detection sensitivity, so it is used in the detection field. Compared with non-destructive testing methods such as X-ray methods, ultrasonic testing has the advantages of low cost, high efficiency, good penetration, flexible and convenient use, and harmless to th...

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Problems solved by technology

Existing problems such as: lack of technical mastery of testing personnel, testing theoretical system and testing methods in special fields have yet to be improved, and are subject to constraints in various aspects such as machinery and electronic appliances, which also limit the accuracy and reliability of the testing system sexual enhancement

[0004]The ultrasonic transceiver systems that are widely available in the market today have largely met the needs of many testing occasions, but the formed ultrasonic transceiver products have been formed after all, and they need to be modified. It is very difficult, the plasticity is not enough for the requirements of some special fields, and the existing high-performance products still maintain a high price, which also restricts the use in some occasions

For colleges and scientific research institutes, the strict technical confidentiality measures of transceiver system manufacturers make it difficult for the instrument to directly meet the requirements. Its core technology is also closed as a high-end product, and it is difficult for users to access it, which is not conducive to the further upgrading and development of the transceiver system. transform

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