Adjusting method and device of transmitting transducer, equipment and medium

Abstract

The invention discloses an adjusting method and device of a transmitting transducer, equipment and a medium, which are used for ensuring that ultrasonic waves emitted by the transmitting transducer are harmless to a human body. Parameters of ultrasonic waves emitted by the transmitting transducer are obtained; determining whether the working environment of the transmitting transducer is qualified or not; when it is determined that the working environment is qualified, determining whether the parameters of the ultrasonic waves meet regulations or not; when the parameters of the ultrasonic waves do not conform to the regulations, working parameters of the transmitting transducer are adjusted, and the working parameters of the transmitting transducer influence the parameters of the ultrasonic waves emitted by the transmitting transducer; when it is determined that the working environment is unqualified, prompt information indicating that the working environment is unqualified is sent out, and the prompt information is used for enabling a user to adjust the working environment of the transmitting transducer. The working environment and parameters of the transmitting transducer are adjusted until the parameters of the ultrasonic waves meet the regulations, so that the ultrasonic waves emitted by the transmitting transducer are harmless to the human body.

Description

Technical Field

[0001] The present application relates to the field of ultrasonic technology, and in particular to a method, device, equipment and medium for adjusting a transmitting transducer. Background Art

[0002] Ultrasonic diagnostic equipment is a device commonly used by doctors for disease diagnosis. The transmitting transducer in the ultrasonic equipment emits ultrasonic waves, which are received by the receiving transducer, and provide ultrasonic examination through the mutual conversion of sound and electricity. When the intensity of the ultrasonic wave is too high or the heat is too high or for other reasons, it may cause harm to the human body. How to ensure that the ultrasonic wave emitted by the transmitting transducer is harmless to the human body is an urgent problem to be solved. Summary of the invention

[0003] The present application provides a method, device, equipment and medium for adjusting a transmitting transducer, so as to ensure that the ultrasonic waves emitted by the transmitting transducer are harmless to the human body.

[0004] In a first aspect, a method for adjusting a transmitting transducer is provided, comprising:

[0005] Obtaining parameters of the ultrasonic wave emitted by the transmitting transducer;

[0006] Determining whether the working environment of the transmitting transducer is qualified;

[0007] When it is determined that the working environment is qualified, determining whether the parameters of the ultrasonic wave meet the requirements;

[0008] When the parameters of the ultrasonic wave do not meet the requirements, adjusting the working parameters of the transmitting transducer, the working parameters of the transmitting transducer affecting the parameters of the ultrasonic wave emitted by the transmitting transducer;

[0009] When it is determined that the working environment is unqualified, a prompt message indicating that the working environment is unqualified is issued, and the prompt message is used to enable the user to adjust the working environment of the transmitting transducer.

[0010] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is a sparse sound pressure peak value on the sound beam axis of the transmitting transducer;

[0011] Determining whether the parameters of the ultrasonic wave meet the requirements, including:

[0012] A mechanical index value is determined based on a sparse sound pressure peak value on the sound beam axis of the transmitting transducer; and it is determined whether the mechanical index value complies with regulations.

[0013] In a possible example, the working environment of the transmitting transducer includes: the position of the transmitting transducer.

[0014] In a possible example, determining whether the position of the transmitting transducer is qualified includes:

[0015] When it is determined that the peak number, main peak quantification, and peak point offset are all qualified, the position of the transmitting transducer is determined to be qualified; when it is determined that any one of the peak number, main peak quantification, and peak point offset is unqualified, the position of the transmitting transducer is determined to be unqualified;

[0016] Determining whether the number of peaks is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis respectively; when it is determined that the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis are both greater than or equal to a set peak number threshold, determining that the number of peaks is qualified;

[0017] Determining whether the main peak is qualified for quantization includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; converting the sparse peak sound pressure waveforms of the x-axis and the y-axis into power waveforms respectively; determining the maximum value in the power waveform; subtracting a preset value from the maximum value to obtain a power reference value; counting the number of data points in the power waveform that are less than or equal to the power reference value; and determining that the main peak is qualified for quantization when it is determined that the numbers of the x-axis and the y-axis are both less than or equal to a set quantization threshold.

[0018] Determining whether the peak point offset is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the absolute value of the offset of the maximum value in the sparse peak sound pressure waveform of the x-axis and the y-axis relative to the center point; when it is determined that the absolute value of the offset corresponding to each of the x-axis and the y-axis is less than or equal to the set offset threshold, determining that the peak point offset is qualified.

[0019] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is the actual power of the ultrasonic wave emitted by the transmitting transducer;

[0020] Determining whether the working environment of the transmitting transducer is qualified based on the parameters of the ultrasonic wave includes:

[0021] Determine whether the absolute value of the difference between the actual power and the estimated power is less than a set threshold; wherein the estimated power is the theoretical power of the ultrasonic wave emitted by the transmitting transducer under a qualified working environment and current working parameters.

[0022] In one possible example, a qualified work environment includes:

[0023] The transmitting line of the transmitting transducer is perpendicular to the receiving target surface, the measurement type of the test system is power, zero point calibration is performed in a frozen state, there are no bubbles on the surface of the transmitting transducer, and there are no impurities in the sound propagation medium.

[0024] In a possible example, determining that there are no bubbles on the surface of the transmitting transducer and no impurities in the sound propagation medium includes:

[0025] It is determined that a variance value between the actual power of the ultrasonic wave and the actual powers of a plurality of ultrasonic waves previously obtained under a qualified working environment is less than a set variance threshold.

[0026] In a possible example, determining whether the parameters of the ultrasonic wave meet the requirements includes:

[0027] Determine whether the actual power of the ultrasonic wave is less than or equal to a preset power value.

[0028] In a second aspect, a device for adjusting a transmitting transducer is provided, comprising:

[0029] An acquisition module, used for acquiring parameters of the ultrasonic wave emitted by the transmitting transducer;

[0030] An environment detection module, used to determine whether the working environment of the transmitting transducer is qualified;

[0031] A parameter detection module, used to determine whether the parameters of the ultrasonic wave meet the requirements when it is determined that the working environment is qualified; when the parameters of the ultrasonic wave do not meet the requirements, adjust the working parameters of the transmitting transducer, and the working parameters of the transmitting transducer affect the parameters of the ultrasonic wave emitted by the transmitting transducer;

[0032] The environment detection module is further used to issue a prompt message indicating that the working environment is unqualified when it is determined that the working environment is unqualified, and the prompt message is used to enable the user to adjust the working environment of the transmitting transducer.

[0033] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is a sparse sound pressure peak value on the sound beam axis of the transmitting transducer;

[0034] The parameter detection module, when used to determine whether the parameters of the ultrasonic wave meet the requirements, is specifically used to: determine the mechanical index value based on the sparse sound pressure peak value on the sound beam axis of the transmitting transducer; and determine whether the mechanical index value meets the requirements.

[0035] In a possible example, the working environment of the transmitting transducer includes: the position of the transmitting transducer.

[0036] In a possible example, the environment detection module, when used to determine whether the position of the transmitting transducer is qualified, is specifically used to: when it is determined that multiple indicators such as the number of peaks, the main peak quantification, and the peak point offset are all qualified, determine that the position of the transmitting transducer is qualified; when it is determined that any one of the indicators among the number of peaks, the main peak quantification, and the peak point offset is unqualified, determine that the position of the transmitting transducer is unqualified;

[0037] Determining whether the number of peaks is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis respectively; when it is determined that the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis are both greater than or equal to a set peak number threshold, determining that the number of peaks is qualified;

[0038] Determining whether the main peak is qualified for quantization includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; converting the sparse peak sound pressure waveforms of the x-axis and the y-axis into power waveforms respectively; determining the maximum value in the power waveform; subtracting a preset value from the maximum value to obtain a power reference value; counting the number of data points in the power waveform that are less than or equal to the power reference value; and determining that the main peak is qualified for quantization when it is determined that the numbers of the x-axis and the y-axis are both less than or equal to a set quantization threshold.

[0039] Determining whether the peak point offset is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the absolute value of the offset of the maximum value in the sparse peak sound pressure waveform of the x-axis and the y-axis relative to the center point; when it is determined that the absolute value of the offset corresponding to each of the x-axis and the y-axis is less than or equal to the set offset threshold, determining that the peak point offset is qualified.

[0040] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is the actual power of the ultrasonic wave emitted by the transmitting transducer;

[0041] The environmental detection module, when used to determine whether the working environment of the transmitting transducer is qualified based on the parameters of the ultrasonic wave, is specifically used to: determine whether the absolute value of the difference between the actual power and the estimated power is less than a set threshold; wherein the estimated power is the theoretical power of the ultrasonic wave emitted by the transmitting transducer under a qualified working environment and current working parameters.

[0042] In one possible example, a qualified work environment includes:

[0043] The transmitting line of the transmitting transducer is perpendicular to the receiving target surface, the measurement type of the test system is power, zero point calibration is performed in a frozen state, there are no bubbles on the surface of the transmitting transducer, and there are no impurities in the sound propagation medium.

[0044] In a possible example, when the environment detection module is used to determine whether the parameters of the ultrasonic wave meet the requirements, it is specifically used to determine whether the actual power of the ultrasonic wave is less than or equal to a preset power value.

[0045] In a third aspect, the present application provides an ultrasonic diagnostic device, comprising: a processor, and optionally, a memory; the processor and the memory are coupled; the memory is used to store computer programs or instructions; the processor is used to execute part or all of the computer programs or instructions in the memory, and when the part or all of the computer programs or instructions are executed, it is used to implement the functions of any of the above methods.

[0046] In a possible implementation, the device may further include a transceiver, the transceiver being configured to send a signal processed by the processor or receive a signal input to the processor. The transceiver may perform a sending action or a receiving action of any one of the methods.

[0047] In a fourth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program includes instructions for implementing any one of the functions.

[0048] Alternatively, a computer-readable storage medium is used to store a computer program, and when the computer program is executed by a computer, the computer can execute any of the above methods.

[0049] According to a fifth aspect, a computer program product is provided, the computer program product comprising: a computer program code, when the computer program code is run on a computer, the computer is enabled to execute any one of the above methods.

[0050] In the embodiment of the present application, the working environment and parameters of the transmitting transducer are adjusted until the parameters of the ultrasonic wave meet the requirements, thereby achieving the goal that the ultrasonic wave emitted by the transmitting transducer is harmless to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0052] Figure 1 A schematic diagram of an adjustment process of a transmitting transducer provided in an embodiment of the present application is shown;

[0053] Figure 2a An ultrasonic test structure diagram provided by an embodiment of the present application is shown;

[0054] Figure 2b An xz section structure diagram of a sound field provided by an embodiment of the present application is shown;

[0055] Figure 3a The figure shows the sound pressure distribution of an undistorted sound field xz section provided by an embodiment of the present application;

[0056] Figure 3b A sound pressure distribution diagram of a distorted sound field xz section provided in an embodiment of the present application is shown;

[0057] Figure 4a shows a sound pressure distribution diagram of 1dz without distortion provided by an embodiment of the present application;

[0058] Figure 4b shows a sound pressure distribution diagram of 1dx without distortion provided by an embodiment of the present application;

[0059] Figure 5 A sound pressure distribution diagram of 1dz and 1dx of double-peak distortion provided in an embodiment of the present application is shown;

[0060] Figure 6 A sound pressure distribution diagram of 1dz and 1dx with multi-peak distortion provided by an embodiment of the present application is shown;

[0061] Figure 7 The sound pressure distribution diagram of 1dz and 1dx of a peak broadening distortion provided by an embodiment of the present application is shown;

[0062] Figure 8 A structural diagram of an adjustment device for a transmitting transducer provided in an embodiment of the present application is shown;

[0063] Fig. 9 A structural diagram of an ultrasonic diagnostic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0064] In order to make the purpose and implementation of the present application clearer, the exemplary implementation of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments. The terms "first", "second", "third", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable where appropriate.

[0065] It should be noted that the embodiments of the present application are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the present application.

[0066] First, the technical terms and related technologies involved in this application are introduced.

[0067] 1) A transducer that converts an electrical signal into an acoustic signal is called a transmitting transducer. A transducer that converts an acoustic signal into an electrical signal is called a receiving transducer.

[0068] 2) The value of the mechanical index MI on the ultrasound instrument is an indicator of the mechanical mechanism of the ultrasound. The larger the MI value, the higher the intensity of the ultrasound and the greater the impact on human tissue. Therefore, in the medical ultrasound industry, the MI value of the ultrasound output needs to be strictly controlled and tested to ensure the safety of the human body. The calculation method of the mechanical index is clearly defined in industry specifications such as FDA, CFDA, IEC, and CE.

[0069] In one example, Among them, P r.3 The sparse peak sound pressure waveform represents the sparse peak sound pressure peak of the sound beam axis after attenuation. Attenuation refers to multiplying by a coefficient. The z axis is the sound beam axis of the transmitting transducer, P r.3 The unit is MPa, f awf Indicates the operating frequency of ultrasound, f awf The unit is MHz, C MI Represents a fixed constant.

[0070] Theoretically, there is no risk of cavitation when the MI value is less than 0.7. Some regulations stipulate that the MI value of ultrasonic diagnostic equipment shall not exceed 1.9 regardless of the mode and application.

[0071] 3) The value of the thermal index TI on the ultrasonic instrument refers to the ratio of the temperature rise caused by ultrasound irradiation on a certain acoustic interface to the temperature rise of the interface by 1°C. The calculation method of the thermal index is clearly stipulated in industry standards such as FDA, CFDA, IEC, and CE.

[0072] In one example, Among them, W p Indicates the specified transmit power value; W dep The power values ​​necessary to raise the target tissue temperature by 1°C were estimated based on several thermal models.

[0073] In most cases, the TI value is close to 1, but in some Doppler modes, the TI value may be as high as 6 or even higher.

[0074] According to the relevant standards of IEC, CFDA, and CE, operators of ultrasonic diagnostic equipment should refer to the TI and MI values ​​in the current state, and make the best choice between diagnostic effect and safety risks in accordance with the principle of As Low As Reasonably Achievable.

[0075] like Figure 1 As shown, a schematic diagram of an adjustment process of a transmitting transducer is provided, comprising the following steps:

[0076] Step 101: Obtain the parameters of the ultrasonic wave emitted by the transmitting transducer.

[0077] Step 102: Determine whether the working environment of the transmitting transducer is qualified. If yes, execute step 103; if no, execute step 105.

[0078] Step 103: When it is determined that the working environment is qualified, determine whether the ultrasonic parameters meet the requirements. If not, execute step 104.

[0079] Step 104: When the parameters of the ultrasonic wave do not meet the requirements, the working parameters of the transmitting transducer are adjusted. The working parameters of the transmitting transducer affect the parameters of the ultrasonic wave emitted by the transmitting transducer.

[0080] After executing step 104, execute step 101 again.

[0081] Step 105: When it is determined that the working environment is unqualified, a prompt message indicating that the working environment is unqualified is issued, and the prompt message is used to enable the user to adjust the working environment of the transmitting transducer.

[0082] After executing step 105, execute step 101 again.

[0083] The above steps 101 to 105 are repeatedly performed to adjust the working environment and parameters of the transmitting transducer until the parameters of the ultrasonic wave meet the requirements, thereby achieving that the ultrasonic wave emitted by the transmitting transducer is harmless to the human body.

[0084] Based on the calculation formula of the mechanical index, It can be seen that the mechanical index and the sparse sound pressure peak value P after the sound pressure waveform of the sound beam axis is attenuated r.3 , and the ultrasonic working frequency f awf In actual use, the operating frequency f awf Usually fixed, the sparse sound pressure peak value P after the sound pressure waveform of the sound beam axis is attenuated r.3 is mutable.

[0085] In one example, the parameter of the ultrasonic wave emitted by the transmitting transducer is the sparse sound pressure peak value on the sound beam axis of the transmitting transducer. The test system can output the original sound pressure waveform on the sound beam axis, and can also output the sound pressure waveform after the sparse sound pressure peak point extraction operation is performed on the original sound pressure waveform on the sound beam axis, and the sparse sound pressure peak value on the sound beam axis can be obtained based on the sound pressure waveform after the sparse operation.

[0086] In one example, determining whether the parameters of the ultrasonic wave meet the requirements includes: determining a mechanical index value based on a sparse sound pressure peak value on the sound beam axis of the transmitting transducer, and then determining whether the mechanical index value meets the requirements. Specifically, multiplying the sparse sound pressure peak value by an attenuation coefficient to obtain an attenuated sparse sound pressure peak value P r.3 , and then according to the sparse sound pressure peak value P after attenuation r.3 Determine the mechanical index value.

[0087] If the mechanical index meets the requirements, the sparse sound pressure peak value on the sound beam axis of the transmitting transducer also meets the requirements. If the mechanical index does not meet the requirements, the sparse sound pressure peak value on the sound beam axis of the transmitting transducer also does not meet the requirements.

[0088] The sparse sound pressure peak value on the sound beam axis of the transmitting transducer is related to the working environment of the transmitting transducer (such as the position of the transmitting transducer) and the working parameters of the transmitting transducer (such as the working voltage of the transmitting transducer). When the working environment of the transmitting transducer is unqualified, the sparse sound pressure peak value on the sound beam axis of the transmitting transducer measured by the test system is invalid, which may cause the mechanical index MI to fail to meet the regulations. When the working environment of the transmitting transducer is qualified, the sparse sound pressure peak value on the sound beam axis of the transmitting transducer measured by the test system is valid. At this time, if the mechanical index MI still does not meet the regulations, the working parameters of the transmitting transducer can be adjusted to change the sparse sound pressure peak value on the sound beam axis of the transmitting transducer so that the mechanical index meets the regulations.

[0089] The following describes the process of determining whether the location of the transmitting transducer is qualified.

[0090] Theoretically, when the transmitting transducer is in a qualified position, the receiving transducer is on the sound beam axis of the sound field excited by the transmitting transducer, and the place where the receiving transducer obtains the signal is exactly where the ultrasonic signal emitted by the ultrasonic transmitting transducer is the strongest. Figure 2a As shown. Figure 2a In the example, the z-axis is defined as the sound beam axis. This is just an example. The x-axis or y-axis can also be defined as the sound beam axis. The principle is the same. The z-axis is used as the sound beam axis as an example for the following description.

[0091] The acoustic field simulation diagram is used to briefly explain the characteristics of the ultrasonic acoustic field. The xz section structure of the acoustic field is as follows: Figure 2b As shown, when the transmitting transducer is perpendicular to the ground, the sound pressure distribution of the xz section of the sound field is as follows: Figure 3a As shown, the sound field is not distorted. The sound pressure at the focal point is high in intensity and good in concentration, while the non-focal area is weak in intensity and strong in divergence. The sound pressure distribution on 1dz (1 in 1dz represents a dimension, z represents the z-axis, and the embodiment of the present application takes the z-axis as the sound beam axis for example) can be obtained from the xz section, as shown in FIG. Figure 4a The sound pressure distribution of 1dz without distortion is shown in the figure. The emission center of the transmitting transducer is taken as the origin of the coordinate. The horizontal axis represents the distance from the current position to the emission center. The unit of the distance is millimeter. The vertical axis represents the sound pressure intensity. The unit of the intensity is MPa. The strongest (peak) sound pressure of 1dz is about 88 mm. Figure 4b As shown, the undistorted sound pressure distribution of 1dx and 1dy at the strongest sound pressure of 1dz is introduced. The horizontal axis represents the distance of the x-axis or the distance of the y-axis, and the unit of the distance can be millimeters. The vertical axis represents the sound pressure intensity, and the unit of the intensity is MPa. The sound pressure distribution of 1dy and 1dx at the strongest sound pressure of 1dz is the same, and the strongest sound pressure of 1dx and 1dy at the strongest sound pressure of 1dz is at 0.

[0092] When the transmitting transducer is tilted, the sound field excited by the transmitting transducer is tilted as a whole for the receiving transducer, and the receiving transducer is no longer on the sound beam axis (z-axis) of the sound field. Figure 3b As shown in FIG. 1 , it is a simulation diagram of the sound pressure distribution of the xz section when the sound field is tilted by a certain degree (for example, 5 degrees). At this time, the waveform of the sound pressure will be obviously distorted.

[0093] It can be seen from this that if the transmitting transducer is tilted, the sparse peak sound pressure waveforms of 1dx and 1dy at the strongest sound pressure point of 1dz tested by the receiving transducer will be obviously distorted. The present application proposes to infer whether the position of the transmitting transducer is correct by analyzing whether the sparse peak sound pressure waveforms of 1dx and 1dy at the strongest sound pressure point of 1dz are qualified.

[0094] Whether the sound pressure waveform is qualified is mainly analyzed based on one or more indicators including the number of peaks, main peak quantification, and peak point offset.

[0095] a) Peak number:

[0096] For each data point in the sound pressure waveform, determine whether the previous data point and the next data point of the data point are both smaller than the data point. When it is determined that the previous data point and the next data point of the data point are both smaller than the data point, then determine that the data point is a peak. Traverse all data points in the sound pressure waveform to determine the number of peaks.

[0097] After the peak number is determined, the peak number is compared with a preset peak number threshold Peak_ratio, and when the peak number is greater than or equal to the preset peak number threshold Peak_ratio, the peak number indicator is determined to be unqualified. In this case, the type of waveform distortion is bimodal distortion or multi-modal distortion. Figure 5 A schematic diagram of double-peak distortion is shown, which is a sparse peak sound pressure waveform when the transmitting transducer is tilted 5 degrees. It can be seen that there are two peaks in the sparse peak sound pressure waveform of 1dx where the sound pressure of 1dz is the strongest. Figure 6 A schematic diagram of multi-peak distortion is shown, and it can be seen that there are more than three peaks in the sparse peak sound pressure waveform of 1dx where the sound pressure of 1dz is the strongest.

[0098] In the embodiment of the present application, the peak numbers of the sparse peak sound pressure waveforms of 1dx and 1dy at the point where the sound pressure of 1dz is the strongest are determined respectively, and compared with the peak number thresholds of the respective ones.

[0099] b) Quantification of main peak:

[0100] The sound pressure waveforms are converted into power waveforms respectively. For example, the power waveform is determined using the formula 10×log10(x), where x represents a data point in the sound pressure waveform. After determining the power waveform corresponding to the sound pressure waveform, the maximum value in the power waveform is determined; a preset value (e.g., -3dB) is subtracted from the maximum value to obtain a power reference value; and the number of data points in the power waveform that are greater than or equal to the power reference value is counted, which is the main peak quantization value.

[0101] After determining the main peak quantization value, the main peak quantization value is compared with the preset quantization threshold Width_M. When the main peak quantization value is greater than or equal to the preset quantization threshold Width_M, it is determined that the main peak quantization index is unqualified. In this case, the type of waveform distortion is peak broadening distortion. Figure 7 A schematic diagram of peak broadening distortion is shown.

[0102] In the embodiment of the present application, the main peak quantization values ​​of the sparse peak sound pressure waveforms of 1dx and 1dy at the point where the sound pressure of 1dz is the strongest are determined respectively, and compared with the respective quantization thresholds.

[0103] c) Peak point deviation:

[0104] Find the maximum value in the sound pressure waveform, and determine the absolute value of the displacement of the maximum value relative to the center point (usually the coordinate origin) of the sound pressure waveform;

[0105] After determining the absolute value of the offset, the absolute value of the offset is compared with the preset offset threshold df_0. When the absolute value of the offset is greater than or equal to the preset offset threshold df_0, it is determined that the peak offset indicator is unqualified. In this case, the type of waveform distortion is zero offset distortion.

[0106] In the embodiment of the present application, the absolute values ​​of the offsets of the sparse peak sound pressure waveforms of 1dx and 1dy at the point where the sound pressure of 1dz is the strongest are determined respectively, and compared with the respective offset thresholds.

[0107] In a possible example, the sound pressure waveform is qualified only when the three indicators of peak number, main peak quantization, and peak point offset are all qualified. As long as any one of the indicators is unqualified, the sound pressure waveform is unqualified.

[0108] The specific values ​​of the peak number threshold Peak_ratio, the quantization threshold Width_M, and the offset threshold df_0 depend on the tolerance to measurement errors.

[0109] The above-mentioned parameters can be obtained by testing the AIMS ultrasonic intensity test system. Among them, the complete test files of the AIMS ultrasonic intensity test system include: status_info.txt, 1dx.snq, 1dy.snq, 1dz.snq and wave.snq. The status_info.txt file saves the working parameters of the transmitting transducer, such as the working voltage, etc. The 1dx.snq file saves the sparse peak sound pressure waveform of the x-axis, such as the sparse peak sound pressure waveform of 1dx at the strongest sound pressure of 1dz. The 1dy.snq file saves the sparse peak sound pressure waveform of the y-axis, such as the sparse peak sound pressure waveform of 1dy at the strongest sound pressure of 1dz. The 1dz.snq file saves the sparse peak sound pressure waveform of the z-axis (sound beam axis). The wave.snq file saves the sound pressure waveforms of all measurement points and all measurement times.

[0110] This application is in execution Figure 1 Before adjusting the transmitting transducer shown in the figure, the integrity of the test file and the integrity of the information recorded in the test file can be determined. If a test file does not exist, or a parameter in a test file does not exist, the measurement data is incomplete, and a "data missing" prompt message can be displayed.

[0111] In one example, the parameter of the ultrasonic wave emitted by the transmitting transducer is the actual power of the ultrasonic wave, that is, the actual transmitting power of the transmitting transducer; based on the parameter of the ultrasonic wave, determining whether the working environment of the transmitting transducer is qualified includes: determining whether the absolute value of the difference between the actual power of the ultrasonic wave and the estimated power is less than a set threshold; wherein the estimated power is the theoretical power of the ultrasonic wave emitted by the transmitting transducer under a qualified working environment and current working parameters. If the absolute value of the difference is less than the set threshold DifPower, it is determined that the working environment of the transmitting transducer is qualified, otherwise, the working environment of the transmitting transducer is unqualified.

[0112] The operating parameters include but are not limited to one or more of the following: the type of transmitting transducer (e.g., linear array, convex array, etc.), the operating frequency of the transmitting transducer, the operating voltage of the transmitting transducer, the pulse repetition frequency (PRF) of the transmitting transducer, and the aperture size of the transmitting transducer.

[0113] Under a qualified working environment, the power of the ultrasonic wave obtained by the transmitting transducer with different working parameters can be statistically fitted to obtain a fitting curve of the working parameters and the power of the ultrasonic wave. Subsequently, the fitting curve can be used to find the estimated power corresponding to any working parameter. The threshold DifPower is calculated based on the fluctuation of the statistical data.

[0114] When the working environment of the transmitting transducer is unqualified, the actual power of the ultrasonic wave measured by the test system is invalid. When the working environment of the transmitting transducer is qualified, the actual power of the ultrasonic wave measured by the test system is valid. At this time, it can be determined whether the actual power meets the requirements.

[0115] In one example, determining whether the parameters of the ultrasonic wave meet the requirements includes: determining whether the actual power of the ultrasonic wave is less than or equal to a preset power value.

[0116] The preset power value is the thermal index formula W p , that is, the actual power of the ultrasound is compared with the specified power value W p If the actual power is less than or equal to W p , it is determined that the actual power meets the requirements, otherwise, it does not meet the requirements.

[0117] The following introduces whether the working environment of the transmitting transducer is qualified. A qualified working environment includes the following aspects: the transmitting line of the transmitting transducer is perpendicular to the receiving target surface, the measurement type of the test system is power, zero-point calibration is performed in a frozen state, there are no bubbles on the surface of the transmitting transducer, and there are no impurities in the sound propagation medium (such as water).

[0118] When the transmitting line of the transmitting transducer is not perpendicular to the receiving target surface, the measured transmitting power may be inaccurate.

[0119] The measurement type refers to the meaning of the parameters output by the test system, such as weight, power, etc. This example requires testing the transmission power, so the measurement type must be power. For example, the unit of power is milliwatt mw. If the unit of the test data is milliwatt mw, the test equipment is set correctly before the test. Otherwise, the test conditions are abnormal, that is, the working environment is abnormal, and the test results are invalid.

[0120] If the test equipment (such as a radiation force balance) is not zeroed when the transmitting transducer is in a frozen state, the final test data results will fluctuate around 0mw, or even have negative energy values. Similarly, if the test conditions are abnormal, the test results will be invalid.

[0121] If there are bubbles on the surface of the transmitting transducer, or impurities in the sound propagation medium (such as water), the test results will be unstable and have a large variance. You can first observe with your eyes whether there are bubbles and impurities, and you can also use the variance of the actual power of this time and the actual power of the previous test to determine whether there are bubbles on the surface of the transmitting transducer, or impurities in the sound propagation medium (such as water). When the variance is greater than the set threshold, it is determined that there are bubbles on the surface of the transmitting transducer and / or impurities in the sound propagation medium (such as water).

[0122] The above-mentioned parameters can be obtained by testing the RFB-2000 radiation force balance test system. Among them, the complete test files of the RFB-2000 radiation force balance test system include: raw_rfb_power.rfb and status_info.txt. The status_info.txt file stores the operating parameters of the transmitting transducer, such as the type of the transmitting transducer, the operating frequency of the transmitting transducer, the operating voltage of the transmitting transducer, the pulse repetition frequency (PRF) of the transmitting transducer, the aperture size of the transmitting transducer, etc. The raw_rfb_power.rfb file stores the transmitting power of the transmitting transducer (i.e. the power of the ultrasonic wave).

[0123] This application is in execution Figure 1 Before adjusting the transmitting transducer shown in the figure, the integrity of the test file and the integrity of the information recorded in the test file can be determined. If a test file does not exist, or a parameter in a test file does not exist, the measurement data is incomplete, and a "data missing" prompt message can be displayed.

[0124] The present application can also perform pass rate statistics on all test data, and can provide and display the pass rate of all focus test data at the current frequency, so that testers can quickly grasp the overall situation of the test data, quantify the pass rate and effectiveness of the test data, and improve the standardization of the test and the accuracy of the test results.

[0125] Based on the same technical concept, the present application also provides an adjustment device for a transmitting transducer. Figure 8 A schematic structural diagram of an adjusting device for a transmitting transducer is shown, comprising:

[0126] An acquisition module 81 is used to acquire the parameters of the ultrasonic wave emitted by the transmitting transducer;

[0127] An environment detection module 82 is used to determine whether the working environment of the transmitting transducer is qualified;

[0128] The parameter detection module 83 is used to determine whether the parameters of the ultrasonic wave meet the requirements when it is determined that the working environment is qualified; when the parameters of the ultrasonic wave do not meet the requirements, adjust the working parameters of the transmitting transducer, and the working parameters of the transmitting transducer affect the parameters of the ultrasonic wave emitted by the transmitting transducer;

[0129] The environment detection module 82 is further configured to issue a prompt message indicating that the working environment is unqualified when it is determined that the working environment is unqualified, and the prompt message is configured to enable the user to adjust the working environment of the transmitting transducer.

[0130] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is a sparse sound pressure peak value on the sound beam axis of the transmitting transducer. The parameter detection module 83, when used to determine whether the parameter of the ultrasonic wave meets the requirements, is specifically used to: determine a mechanical index value based on the sparse sound pressure peak value on the sound beam axis of the transmitting transducer; and determine whether the mechanical index value meets the requirements.

[0131] In a possible example, the working environment of the transmitting transducer includes: the position of the transmitting transducer.

[0132] In a possible example, the environment detection module 82, when used to determine whether the position of the transmitting transducer is qualified, is specifically used to: when it is determined that multiple indicators such as the number of peaks, the main peak quantization, and the peak point offset are all qualified, determine that the position of the transmitting transducer is qualified; when it is determined that any one of the indicators among the number of peaks, the main peak quantization, and the peak point offset is unqualified, determine that the position of the transmitting transducer is unqualified;

[0133] Determining whether the number of peaks is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis respectively; when it is determined that the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis are both greater than or equal to a set peak number threshold, determining that the number of peaks is qualified;

[0134] Determining whether the main peak is qualified for quantization includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; converting the sparse peak sound pressure waveforms of the x-axis and the y-axis into power waveforms respectively; determining the maximum value in the power waveform; subtracting a preset value from the maximum value to obtain a power reference value; counting the number of data points in the power waveform that are less than or equal to the power reference value; and determining that the main peak is qualified for quantization when it is determined that the numbers of the x-axis and the y-axis are both less than or equal to a set quantization threshold.

[0135] Determining whether the peak point offset is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the absolute value of the offset of the maximum value in the sparse peak sound pressure waveform of the x-axis and the y-axis relative to the center point; when it is determined that the absolute value of the offset corresponding to each of the x-axis and the y-axis is less than or equal to the set offset threshold, determining that the peak point offset is qualified.

[0136] In a possible example, the parameter of the ultrasonic wave emitted by the transmitting transducer is the actual power of the ultrasonic wave emitted by the transmitting transducer; the environmental detection module 82, when used to determine whether the working environment of the transmitting transducer is qualified based on the parameter of the ultrasonic wave, is specifically used to: determine whether the absolute value of the difference between the actual power and the estimated power is less than a set threshold; wherein the estimated power is the theoretical power of the ultrasonic wave emitted by the transmitting transducer under a qualified working environment and current working parameters.

[0137] In one possible example, a qualified working environment includes: the transmitting line of the transmitting transducer is perpendicular to the receiving target surface, the measurement type of the test system is power, zero point calibration is performed in a frozen state, there are no bubbles on the surface of the transmitting transducer, and there are no impurities in the sound propagation medium.

[0138] In a possible example, when the environment detection module 82 is used to determine whether the parameters of the ultrasonic wave meet the requirements, it is specifically used to determine whether the actual power of the ultrasonic wave is less than or equal to a preset power value.

[0139] Based on the same technical concept, the present application also provides an ultrasonic diagnostic device, Fig. 9 A schematic diagram of the structure of an ultrasonic diagnostic device is shown. Fig. 9 As shown, it includes: a processor 91, and optionally, also includes: a communication interface 92, a memory 93 and a communication bus 94, wherein the processor 91, the communication interface 92, and the memory 93 communicate with each other through the communication bus 94;

[0140] The memory 93 stores a computer program. When the program is executed by the processor 91, the processor 91 completes the steps of the above-mentioned method for adjusting the transmitting transducer.

[0141] The communication bus mentioned in the ultrasonic diagnostic equipment can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0142] The communication interface 92 is used for communication between the ultrasonic diagnostic device and other devices.

[0143] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0144] The above-mentioned processor can be a general-purpose processor, including a central processing unit, a network processor (Network Processor, NP), etc.; it can also be a digital signal processing processor (Digital Signal Processing, DSP), an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0145] Based on the same technical concept, on the basis of the above embodiments, the present application provides a computer-readable storage medium, which stores a computer program that can be executed by an ultrasonic diagnostic device, and the computer executable instructions are used to enable the computer to execute the steps of the above-mentioned method for adjusting the transmitting transducer.

[0146] The above-mentioned computer-readable storage medium can be any available medium or data storage device that can be accessed by the processor in the ultrasonic diagnostic equipment, including but not limited to magnetic storage such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc., optical storage such as CD, DVD, BD, HVD, etc., and semiconductor storage such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD), etc.

[0147] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0148] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0149] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0150] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0151] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for adjusting a transmitting transducer, characterized in that: include: Obtaining parameters of the ultrasonic wave emitted by the transmitting transducer; Determining whether the working environment of the transmitting transducer is qualified; When it is determined that the working environment is qualified, determining whether the parameters of the ultrasonic wave meet the requirements; When the parameters of the ultrasonic wave do not meet the requirements, adjusting the working parameters of the transmitting transducer, the working parameters of the transmitting transducer affecting the parameters of the ultrasonic wave emitted by the transmitting transducer; When it is determined that the working environment is unqualified, a prompt message indicating that the working environment is unqualified is issued, and the prompt message is used to enable the user to adjust the working environment of the transmitting transducer.

2. The method according to claim 1, characterized in that The parameter of the ultrasonic wave emitted by the transmitting transducer is the sparse sound pressure peak value on the sound beam axis of the transmitting transducer. Determining whether the parameters of the ultrasonic wave meet the requirements, including: A mechanical index value is determined based on a sparse sound pressure peak value on the sound beam axis of the transmitting transducer; and it is determined whether the mechanical index value complies with regulations.

3. The method according to claim 2, characterized in that The working environment of the transmitting transducer includes: the position of the transmitting transducer.

4. The method according to claim 3, characterized in that Determining whether the position of the transmitting transducer is qualified includes: When it is determined that the peak number, main peak quantification, and peak point offset are all qualified, the position of the transmitting transducer is determined to be qualified; when it is determined that any one of the peak number, main peak quantification, and peak point offset is unqualified, the position of the transmitting transducer is determined to be unqualified; Determining whether the number of peaks is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis respectively; when it is determined that the number of peaks of the sparse peak sound pressure waveforms of the x-axis and the y-axis are both greater than or equal to a set peak number threshold, determining that the number of peaks is qualified; Determining whether the main peak is qualified for quantization includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; converting the sparse peak sound pressure waveforms of the x-axis and the y-axis into power waveforms respectively; determining the maximum value in the power waveform; subtracting a preset value from the maximum value to obtain a power reference value; counting the number of data points in the power waveform that are less than or equal to the power reference value; and determining that the main peak is qualified for quantization when it is determined that the numbers of the x-axis and the y-axis are both less than or equal to a set quantization threshold. Determining whether the peak point offset is qualified includes: determining the sparse peak sound pressure waveform of the x-axis and the sparse peak sound pressure waveform of the y-axis at the sparse sound pressure peak on the z-axis; wherein the z-axis is the sound beam axis of the transmitting transducer; determining the absolute value of the offset of the maximum value in the sparse peak sound pressure waveform of the x-axis and the y-axis relative to the center point; when it is determined that the absolute value of the offset corresponding to each of the x-axis and the y-axis is less than or equal to the set offset threshold, determining that the peak point offset is qualified.

5. The method according to claim 1, characterized in that The parameter of the ultrasonic wave emitted by the transmitting transducer is the actual power of the ultrasonic wave emitted by the transmitting transducer; Determining whether the working environment of the transmitting transducer is qualified based on the parameters of the ultrasonic wave includes: Determine whether the absolute value of the difference between the actual power and the estimated power is less than a set threshold; wherein the estimated power is the theoretical power of the ultrasonic wave emitted by the transmitting transducer under a qualified working environment and current working parameters.

6. The method according to claim 5, characterized in that Eligible work environments include: The transmitting line of the transmitting transducer is perpendicular to the receiving target surface, the measurement type of the test system is power, zero point calibration is performed in a frozen state, there are no bubbles on the surface of the transmitting transducer, and there are no impurities in the sound propagation medium.

7. The method according to claim 6, characterized in that Make sure there are no bubbles on the surface of the transmitting transducer and no impurities in the sound propagation medium, including: It is determined that a variance value between the actual power of the ultrasonic wave and the actual powers of a plurality of ultrasonic waves previously obtained under a qualified working environment is less than a set variance threshold.

8. The method according to claim 5, characterized in that Determining whether the parameters of the ultrasonic wave meet the requirements, including: Determine whether the actual power of the ultrasonic wave is less than or equal to a preset power value.

9. An ultrasonic diagnostic device, characterized in that: include: Processor and memory; The memory is used to store computer programs or instructions; The processor is used to execute part or all of the computer programs or instructions in the memory, and when the part or all of the computer programs or instructions are executed, it is used to implement the method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein the computer program includes instructions for implementing the method according to any one of claims 1 to 8.

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