Digital sequence driving type ultrasonic sensor method and device thereof

Abstract

The invention discloses a digital sequence driving type ultrasonic sensor method and a device thereof. The method comprises: S1, generating a logic level by a control module formed by using a digital chip such as an FPGA or an ARM as a core to obtain a digital sequence a(k); A2, generating a high energy excitation signal xn(t) by an ultrasonic excitation module using an ultrasonic excitation chip as a core; and S3, exciting the ultrasonic sensor by the high energy excitation signal to generate an ultrasonic signal yn(t) with the controllable excitation signal. In addition, the device for implementing the method includes a control module, an ultrasonic excitation module, and an ultrasonic sensor module. According to the invention, the ultrasonic excitation signal parameters are adjustable; and the method and the device thereof are suitable for occasions needing different waveforms to excite one or more ultrasonic sensors.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic detection, and relates to a method and a device for driving an ultrasonic sensor by a digital sequence. The parameters of the ultrasonic excitation signal in the invention are adjustable, and are especially suitable for occasions requiring different waveforms to excite ultrasonic sensors. Background technique [0002] Ultrasonic testing is an important non-destructive testing method, which has been widely developed and applied at home and abroad. In recent years, integrated circuits based on electronic science and technology have developed rapidly. On this basis, ultrasonic testing systems are developing in the direction of digitization, integration, functionality and portability. The current ultrasonic signal excitation forms can be divided into pulse excitation form and coded excitation form. The pulse excitation generation method is simple and easy to adjust, but the amplitude of the excita...

AI Technical Summary

Problems solved by technology

[0003] Most of the ultrasonic sensor excitation methods on the market currently use analog circuits or main control chips to excite detection ultrasonic waves with specific frequencies and specific powers, which have shortcomings such as single function, small adjustable range, and insufficient flexibility in use, which is not convenient for multiple applications in complex occasions. Function Ultrasonic excitation

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