Detection device for calibrating ultrasonic phased array transducer

Abstract

The invention provides a detection device for calibrating an ultrasonic phased array transducer, which is characterized by comprising a standard sample block for reflecting an ultrasonic signal; the calibrated ultrasonic phased array transducer is used as a calibration object; the calibrated ultrasonic phased array transducer wire connector is used for being connected with a corresponding ultrasonic phased array system; the channel adapter is used for forwarding a signal of a channel corresponding to the phased array probe, for example, forwarding the signal to an oscilloscope or forwarding an excitation signal from a signal generator; the channel converter wire connector is used for interconnecting the signal generator and the channel converter and transmitting the excitation signal and the reflection signal without distortion; and the signal generator is used for exciting the corresponding wafer, receiving and amplifying a signal returned by the wafer and preparing to send the signal to the oscilloscope. The method has the advantages that full-automatic switching calibration is achieved, human interference factors are eliminated in the whole process, time and labor cost are saved, and data processing application software is more accurate and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of metrology detection, and in particular to a detection device for calibrating an ultrasonic phased array transducer. Background Art

[0002] The detection device for calibrating ultrasonic phased array transducers is a device used to detect and calibrate the performance of ultrasonic phased array transducers. The basic function of this device is to measure the frequency, bandwidth, duration, probe sensitivity, and crosstalk parameters of ultrasonic waves during transmission by transmitting and receiving ultrasonic waves. Because the frequency characteristics of the transducer and the quality of the transmitting voltage directly affect whether the ultrasonic waves can be transmitted normally, and the quality of the ultrasonic waves determines the quality of the detection of the defect location and defect size of the parts, the performance of the ultrasonic phased array transducer needs to be evaluated regularly.

[0003] Currently, the industry is unable to achieve multi-channel automatic switching calibration of phased array transducers. Manual calibration of 64 channels has many uncertainties, is time-consuming and labor-intensive, and cannot guarantee its accuracy. Summary of the invention

[0004] The purpose of the present invention is to achieve automatic calibration of all channels of an ultrasonic phased array transducer to ensure that its performance reaches the specified standard, thereby improving its accuracy and reliability in practical applications.

[0005] The present invention provides a detection device for calibrating an ultrasonic phased array transducer, which is characterized by comprising a standard sample block, an ultrasonic phased array transducer to be calibrated, a connector for the ultrasonic phased array transducer to be calibrated, a channel adapter, a channel converter connector, a signal generator, a signal generator connecting line, an oscilloscope, a main control computer, and a data communication line;

[0006] The standard block is used to reflect ultrasonic signals; the ultrasonic phased array transducer to be calibrated is used as the calibration object; the ultrasonic phased array transducer connector to be calibrated is used to connect with the corresponding ultrasonic phased array system; the channel adapter is used to forward the signal of the corresponding channel of the phased array probe, such as forwarding it to an oscilloscope or forwarding the excitation signal from the signal generator; the channel converter connector is used to interconnect the signal generator with the channel converter to transmit the excitation signal and the reflected signal without distortion; the signal generator is used to generate a high-voltage pulse signal to excite the corresponding chip in the ultrasonic phased array transducer to be calibrated, and receive and amplify the crystal The signal generator connecting line is used to interconnect the signal generator and the oscilloscope, and transmit the received and amplified signal returned by the chip to the oscilloscope; the oscilloscope is used to process the received signal and calculate the rise time and bandwidth parameters; the main control computer is used to control the signal generator, the oscilloscope and the channel adapter to work together, perform digital signal processing on the collected signal, and display the calibrated result; the data communication line is used to connect the main control computer with the channel adapter, the signal generator and the oscilloscope, and perform corresponding control.

[0007] Ultrasonic phased array transducers are highly efficient ultrasonic imaging and measurement tools, widely used in medicine, industry, environmental monitoring and other fields. By applying the ultrasonic phased array transducer detection device, all channels of the ultrasonic phased array transducer can be automatically calibrated to ensure that its performance meets the specified standards, thereby improving its accuracy and reliability in practical applications. In addition, the device can also help manufacturers improve product quality and meet market demand.

[0008] Compared with the prior art, the present invention has the following advantages:

[0009] The detection device for calibrating an ultrasonic phased array transducer described in the present invention is currently used by manufacturers and metrology departments to calibrate the phased array ultrasonic transducer by manually switching and calibrating 64 channels one by one using test leads. The measurement points are dense and numerous, the measurement uncertainty caused by human factors is large, the accuracy of the calibration data is difficult to guarantee, and it is time-consuming and labor-intensive. The device can be used to automatically switch and calibrate, eliminate human interference factors throughout the process, save time and labor costs, and make the data processing application software more accurate and convenient, ensuring that its performance meets the specified standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0011] Figure 1 A simplified structural diagram of a detection device for calibrating an ultrasonic phased array transducer;

[0012] Figure 2A specific example of a detection device for calibrating an ultrasonic phased array transducer;

[0013] 100 is a standard sample block, 200 is an ultrasonic phased array transducer to be calibrated, 201 is a connector of the ultrasonic phased array transducer to be calibrated, 300 is a channel adapter, 301 is a channel converter connector, 400 is a signal generator, 401 is a signal generator connecting line, 500 is an oscilloscope, 600 is a main control computer, and 601 is a data communication line. DETAILED DESCRIPTION

[0014] The present invention will be further explained below in conjunction with specific implementation plans, but the present invention is not limited thereto. The structures, proportions, and sizes illustrated in the drawings of the specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship, or adjustment of size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0015] like Figure 2 As shown, the specific implementation of the system can be as follows:

[0016] Step 1: The main control computer 600 is an industrial computer; the data communication line 601 connecting it to the signal generator 400 is a serial port extension line with a male end and a female end.

[0017] Step 2: The data communication line 601 connected to the channel converter 300 is a USB printer connection line with a B-type port; the data communication line 601 connected to the oscilloscope 500 is a USB printer connection line with a B-type port.

[0018] Step 3: The channel converter 300 is a self-made RF channel switch; the signal generator 400 is DPR-300; the oscilloscope 500 is DS1000Z-E; and the channel converter connector 301 is a RF line.

[0019] Step 4: The ultrasonic phased array transducer connector 201 is a radio frequency line; the signal generator connection line 401 is a universal BNC connection line; the ultrasonic phased array transducer 200 is the calibrated object, and the standard sample block 100 can be an ultrasonic sample block produced by Shandong Ruixiang Company.

[0020] Step 5: When the detection device for calibrating the ultrasonic phased array transducer is working, the main control computer 600 first controls the channel converter 300 to switch to the specified channel, and then the main control computer 600 controls the signal generator 400 to generate a standard excitation signal. The excitation signal is injected into the channel converter 300 through the channel converter connector 301, and enters the calibrated ultrasonic phased array transducer connector 201 through the RF path inside the channel converter 300 and enters the specified RF path inside the calibrated ultrasonic phased array transducer 200, and finally excites the corresponding chip inside the calibrated ultrasonic phased array transducer 200.

[0021] Step 6: When the chip is excited, a corresponding ultrasonic signal will be generated. The signal will enter the standard sample block 100 and be reflected back to the chip inside the calibrated ultrasonic phased array transducer 200. At this time, the chip will generate a specific signal and then pass through the calibrated ultrasonic phased array transducer connector 201, the channel converter 300 and the channel converter connector 301 in sequence into the signal generator 400, and then go through the amplification and filtering signal processing process inside the signal generator 400.

[0022] Step 7: Enter the oscilloscope 500 through the signal generator connecting line 401. The oscilloscope 500 captures the waveform and performs corresponding digital signal processing under the control of the main control computer 600, and finally feeds back the processing results to the main control computer 600. The main control computer 600 again analyzes and processes the data fed back by the oscilloscope 500 to complete the automatic switching calibration.

[0023] Matters not covered by the present invention are known technologies.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for calibrating an ultrasonic phased array transducer, characterized in that: The detection device for calibrating ultrasonic phased array transducers includes a standard sample block, an ultrasonic phased array transducer to be calibrated, a connector for the ultrasonic phased array transducer to be calibrated, a channel adapter, a channel converter connector, a signal generator, a signal generator connecting line, an oscilloscope, a main control computer, and a data communication line; The standard block is used to reflect ultrasonic signals; the ultrasonic phased array transducer to be calibrated is used as the calibration object; the ultrasonic phased array transducer connector to be calibrated is used to connect with the corresponding ultrasonic phased array system; the channel adapter is used to forward the signal of the corresponding channel of the phased array probe, such as forwarding it to an oscilloscope or forwarding the excitation signal from the signal generator; the channel converter connector is used to interconnect the signal generator with the channel converter to transmit the excitation signal and the reflected signal without distortion; the signal generator is used to generate a high-voltage pulse signal to excite the corresponding chip in the ultrasonic phased array transducer to be calibrated, and receive and amplify the crystal The signal generator connecting line is used to interconnect the signal generator and the oscilloscope, and transmit the received and amplified signal returned by the chip to the oscilloscope; the oscilloscope is used to process the received signal and calculate the rise time and bandwidth parameters; the main control computer is used to control the signal generator, the oscilloscope and the channel adapter to work together, perform digital signal processing on the collected signal, and display the calibrated result; the data communication line is used to connect the main control computer with the channel adapter, the signal generator and the oscilloscope, and perform corresponding control.

2. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The main control computer (600) is an industrial computer.

3. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The data communication line (601) is a serial port extension line or a B-type USB printer connection line.

4. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The channel converter (300) is a radio frequency channel switch.

5. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The signal generator (400) is DPR-300.

6. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The oscilloscope (500) is DS1000Z-E.

7. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The channel converter connector (301) is a radio frequency line.

8. The detection device for calibrating an ultrasonic phased array transducer according to claim 1, characterized in that: The calibrated ultrasonic phased array transducer connector (201) is a radio frequency line; the signal generator connection line (401) is a universal BNC connection line.

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