A method and device for driving an ultrasonic sensor by a digital sequence
An ultrasonic sensor, digital sequence technology, applied in ultrasonic/sonic/infrasonic generation, measurement devices, material analysis using sonic/ultrasonic/infrasonic waves, etc., can solve problems such as small adjustable range, single function, and inflexible use , to achieve the effect of good incentive effect, convenient operation and simple power supply mode
Active Publication Date: 2021-11-23
JIANGSU UNIV
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[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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[0033] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the present invention can also be applied through other equivalent implementation modes, and the implementation modes and accompanying drawings provided in the following examples are only illustrative to illustrate the basic technical idea of the present invention, and the relevant elements in the examples are Parameters such as model, number, shape, and size can be changed in specific implementation environments.
[0034] figure 2 It is the overall functional block diagram of the excitation device for arbitrary digital sequences of ultrasonic sensors in the embodiment of the present invention. The excitation device is composed of the minimum system of FPGA as the control module, and the control signal is the logic level of high level +3.3V and low level 0V; the ultrasonic excitation module is compose...
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The invention discloses a method and device for driving an ultrasonic sensor by a digital sequence. The method includes: S1, a control module composed of a digital chip such as FPGA or ARM as a core to generate a logic level as a digital sequence a(k); S2, using The ultrasonic excitation chip generates high-energy excitation signals for the ultrasonic excitation module composed of the core x n (t); S3, the high-energy excitation signal excites the ultrasonic sensor to generate an ultrasonic signal y with controllable excitation signal n (t). The method realization device includes a control module, an ultrasonic excitation module and an ultrasonic sensor module. The parameters of the ultrasonic excitation signal in the present invention are adjustable, and are especially suitable for occasions where different waveforms are required to excite a single or multiple 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...
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IPC IPC(8): G01N29/34
CPCG01N29/341G01N29/348G01N2291/101
Inventor 宋寿鹏邱越乔梦丽陈昊成芮萱
Owner JIANGSU UNIV