Power transmission fitting 3D ultrasonic drive circuit and switch control method thereof

Abstract

The invention discloses a power transmission fitting 3D ultrasonic drive circuit and a switch control method thereof, and the method comprises the steps: generating an ultrasonic drive signal through a digital signal generation module, and carrying out the phase and delay adjustment of the drive signal through a multi-stage delay control module; the high-gain low-noise power amplification module amplifies a driving signal and transmits the driving signal to the high-speed switch control module, and the high-speed switch control module is adopted to control signal switching to sequentially excite each array element; the control and synchronization module is used for coordinating the operations of the modules, so that the accurate control of signal generation, processing, amplification and switching is realized. According to the invention, wavelet transform and sparse signal recovery algorithms are adopted in the signal processing module, so that the capability of distinguishing tiny defects is remarkably enhanced, and an efficient, reliable and flexible technical solution is provided for nondestructive testing of the power transmission fitting on the whole.

Description

Technical Field

[0001] The present invention relates to the technical field of nondestructive testing, and in particular to a 3D ultrasonic driving circuit of a power transmission fitting and a switch control method thereof. Background Art

[0002] With the large-scale development of power transmission systems and the increasing requirements for operational reliability, the quality inspection of power transmission fittings is particularly important. The current power transmission fitting inspection technologies mainly include appearance dimension inspection, grip strength test and X-ray flaw detection technology. However, these traditional methods have many shortcomings. For example, appearance dimension inspection cannot reflect the internal defect status, grip strength test is a destructive test and cannot be used for equipment in operation, and X-ray flaw detection equipment is bulky, not suitable for outdoor high-altitude operations, and has radiation safety hazards. In addition, traditional methods have limited resolution and analysis capabilities for defects and cannot fully meet the needs of refined inspection of modern power transmission equipment. Therefore, there is an urgent need for a high-resolution, flexible, reliable, and suitable non-destructive testing technology for complex working environments to replace existing methods. Summary of the invention

[0003] In view of the above existing problems, the present invention is proposed.

[0004] Therefore, the present invention provides a driving circuit for 3D ultrasound of power transmission fittings and a switch control method thereof. The system can achieve flexible beam control and high-resolution detection through high-speed and precise phase control, delay control, switch switching and power amplification, and has the characteristics of low noise interference and high reliability.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions, a driving circuit of 3D ultrasound of power transmission fittings and a switch control method thereof, comprising:

[0006] Generate an ultrasonic driving signal through a digital signal generation module, and adjust the phase and delay of the driving signal through a multi-stage delay control module;

[0007] The driving signal is amplified by a high-gain low-noise power amplifier module and transmitted to a high-speed switch control module, and the high-speed switch control module is used to control the signal switching to stimulate each array element in turn;

[0008] The control and synchronization module coordinates the operations of the above modules to achieve precise control of signal generation, processing, amplification and switching.

[0009] As a preferred solution of the driving circuit and switch control method of the 3D ultrasonic transmission fittings described in the present invention, the digital signal generating module includes a direct digital synthesizer to generate a driving signal with a frequency range of 1MHz to 10MHz, and dynamically adjusts the frequency and amplitude of the signal through an internal control circuit to adapt to the material properties and structural morphology of different detection objects. At the same time, the digital signal generating module is communicatively connected with the control and synchronization module, and the frequency range and amplitude are set through an external programming interface, and a driving signal that meets the requirements of ultrasonic detection is generated.

[0010] As a preferred solution of the driving circuit of the power transmission fitting 3D ultrasound and the switch control method thereof according to the present invention, the multi-stage delay control module is composed of a plurality of digital delay units, each unit independently controls the signal delay of a transducer array element, the delay unit is implemented by a field programmable gate array FPGA or a programmable delay chip, and the accuracy of delay adjustment reaches nanosecond level;

[0011] The delay control module inserts a delay in the signal propagation path so that the signal of each array element has a synchronous focusing characteristic. The input end of the delay control module is connected to the digital signal generation module, and the output end is connected to the high-gain low-noise power amplifier module.

[0012] As a preferred solution of the driving circuit of the power transmission fitting 3D ultrasound and the switch control method thereof according to the present invention, the high-gain low-noise power amplifier module includes a broadband power amplifier, the operating frequency covers the range of 1MHz to 10MHz, and provides a signal gain of at least 30dB. The input end of the power amplifier is connected to the output end of the multi-stage delay control module, which is used to amplify the signal after the delay adjustment to the power level required for excitation;

[0013] The power amplifier module also includes an isolation circuit for separating the high-power output signal from the control signal to avoid interference transmission to the control and synchronization module.

[0014] As a preferred solution of the driving circuit and switch control method of the power transmission fitting 3D ultrasound of the present invention, the high-speed switch control module includes a plurality of high-speed response MOSFETs or GaN transistors, each transducer array element corresponds to an independent switch unit, and the switch unit controls the on and off of the excitation signal through the signal sent by the control and synchronization module;

[0015] The response time of the switch control module is in nanoseconds. The switch control module is connected to the high-gain low-noise power amplifier module and transmits the excitation signal to each array element in turn.

[0016] As a preferred solution of the driving circuit of the power transmission fitting 3D ultrasound and the switch control method thereof described in the present invention, wherein: the control and synchronization module is based on the FPGA unit and has a built-in high-precision clock source, which is used to generate a synchronization signal to coordinate the work of the digital signal generation module, the multi-stage delay control module and the high-speed switch control module;

[0017] The module receives control instructions from external devices through a high-speed parallel data channel and distributes phase adjustment and delay parameters to the corresponding modules. The control and synchronization module also manages the overall drive circuit through a dedicated communication interface to achieve precise coordination of delay adjustment and switch switching.

[0018] As a preferred solution of the driving circuit and switch control method of the power transmission fitting 3D ultrasound described in the present invention, the FPGA unit includes a circuit for completing the delay adjustment and excitation power control of the local signal, receiving the instructions of the control and synchronization module at the same time, and executing the signal switching task. The local power management circuit is responsible for adjusting the power output level of the transducer array element to ensure that the driving signal meets the design requirements.

[0019] As a preferred solution of the driving circuit of the power transmission fitting 3D ultrasound and the switch control method thereof according to the present invention, wherein: the driving circuit is connected to the external device through a high-speed communication interface, and the communication interface includes an SPI serial peripheral interface, an I2C integrated circuit communication or an Ethernet interface, and the communication interface is used for data exchange between the external device and the control and synchronization module, and can receive control instructions sent by the external device and feedback the working status of the driving circuit;

[0020] The interface also supports remote configuration of distributed control modules, enabling real-time adjustment and monitoring of array element excitation parameters.

[0021] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, steps of a driving circuit of a 3D ultrasonic transmission fitting and a switch control method thereof are implemented.

[0022] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of implementing a driving circuit of a 3D ultrasonic power transmission fitting and a switch control method thereof are implemented.

[0023] Beneficial effects of the present invention: The present invention realizes precise control and rapid response to 3D ultrasonic detection signals of power transmission fittings by integrating digital signal generation, multi-stage delay control, high-gain power amplification and high-speed switch control modules. The distributed control architecture significantly improves the modularity and flexibility of the system to meet the needs of different detection scenarios. Through the integration of multi-physical field detection modules, the scope of application of the detection method is expanded, and a more comprehensive evaluation of defects can be performed. In addition, the present invention adopts wavelet transform and sparse signal recovery algorithm in the signal processing module, which significantly enhances the resolution of tiny defects, and overall provides an efficient, reliable and flexible technical solution for non-destructive detection of power transmission fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 A schematic flow chart of a 3D ultrasonic driving circuit and a switch control method of a power transmission fitting provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a driving circuit of a power transmission fitting 3D ultrasound and a switch control method thereof, including:

[0033] S1: Generate an ultrasonic driving signal through a digital signal generation module, and use a multi-stage delay control module to adjust the phase and delay of the driving signal.

[0034] S2: The driving signal is amplified by a high-gain, low-noise power amplifier module and transmitted to a high-speed switch control module, which controls the signal switching to stimulate each array element in turn.

[0035] S3: The control and synchronization module coordinates the operations of the above modules to achieve precise control of signal generation, processing, amplification and switching.

[0036] The digital signal generating module includes using a direct digital synthesizer to generate a driving signal with a frequency range of 1 MHz to 10 MHz, dynamically adjusting the frequency and amplitude of the signal through an internal control circuit to adapt to the material characteristics and structural morphology of different detection objects. At the same time, the digital signal generating module is communicatively connected with the control and synchronization module, and the frequency range and amplitude are set through an external programming interface, and a driving signal that meets the requirements of ultrasonic detection is generated.

[0037] The multi-stage delay control module is composed of multiple digital delay units, each of which independently controls the signal delay of a transducer array element. The delay unit is implemented by a field programmable gate array FPGA or a programmable delay chip, and the accuracy of delay adjustment reaches nanosecond level;

[0038] The delay control module inserts a delay in the signal propagation path so that the signal of each array element has a synchronous focusing characteristic. The input end of the delay control module is connected to the digital signal generation module, and the output end is connected to the high-gain low-noise power amplifier module.

[0039] The high-gain low-noise power amplifier module includes a broadband power amplifier, the operating frequency covers the range of 1MHz to 10MHz, and provides a signal gain of at least 30dB. The input end of the power amplifier is connected to the output end of the multi-stage delay control module, which is used to amplify the delay-adjusted signal to the power level required for excitation;

[0040] The power amplifier module also includes an isolation circuit for separating the high-power output signal from the control signal to avoid interference transmission to the control and synchronization module.

[0041] The high-speed switch control module includes a plurality of high-speed response MOSFETs or GaN transistors, each transducer array element corresponds to an independent switch unit, and the switch unit controls the on and off of the excitation signal through the signal sent by the control and synchronization module;

[0042] The response time of the switch control module is in nanoseconds. The switch control module is connected to the high-gain low-noise power amplifier module and transmits the excitation signal to each array element in turn.

[0043] The control and synchronization module is based on the FPGA unit and has a built-in high-precision clock source, which is used to generate synchronization signals to coordinate the work of the digital signal generation module, the multi-stage delay control module and the high-speed switch control module;

[0044] The module receives control instructions from external devices through a high-speed parallel data channel and distributes phase adjustment and delay parameters to the corresponding modules. The control and synchronization module also manages the overall drive circuit through a dedicated communication interface to achieve precise coordination of delay adjustment and switch switching.

[0045] The FPGA unit includes a circuit for completing the delay adjustment and excitation power control of the local signal, receiving the instructions of the control and synchronization module, and executing the signal switching task. The local power management circuit is responsible for adjusting the power output level of the transducer array element to ensure that the driving signal meets the design requirements.

[0046] The drive circuit is connected to the external device through a high-speed communication interface, which includes an SPI serial peripheral interface, an I2C integrated circuit communication or an Ethernet interface. The communication interface is used for data exchange between the external device and the control and synchronization module, and can receive control instructions sent by the external device and feedback the working status of the drive circuit;

[0047] The interface also supports remote configuration of distributed control modules, enabling real-time adjustment and monitoring of array element excitation parameters.

[0048] The driving circuit further includes a multi-physics field detection module, which is composed of an infrared thermal imaging sensor or an electromagnetic induction sensor. The multi-physics field detection module works together with the ultrasonic signal acquisition module to simultaneously obtain the thermal response signal and electromagnetic characteristic signal of the material. The output end of the module is connected to the central data processing system through a high-speed data channel, and the detection signal is input into a unified analysis platform for data processing and result output.

[0049] The driving circuit includes a signal processing module, which performs multi-scale analysis on the collected ultrasonic signal through wavelet transform or sparse signal recovery algorithm. The input end of the signal processing module is connected to the output end of the ultrasonic signal acquisition module and the multi-physics field detection module, which is used to remove noise in the signal and enhance the characteristics of small defects. The processed signal is output to the control and synchronization module through the data interface for further use.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0051] Embodiment 2, the second embodiment of the present invention, is different from the previous embodiment in that:

[0052] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0053] 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 embodiments of 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 generate 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.

[0054] 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.

[0055] 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.

[0056] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0057] 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 3D ultrasonic driving circuit for power transmission fittings and a switch control method thereof, characterized in that: include, Generate an ultrasonic driving signal through a digital signal generation module, and adjust the phase and delay of the driving signal through a multi-stage delay control module; The driving signal is amplified by a high-gain low-noise power amplifier module and transmitted to a high-speed switch control module, and the high-speed switch control module is used to control the signal switching to stimulate each array element in turn; The control and synchronization module coordinates the operations of the above modules to achieve precise control of signal generation, processing, amplification and switching.

2. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 1, characterized in that: The digital signal generating module includes using a direct digital synthesizer to generate a driving signal with a frequency range of 1 MHz to 10 MHz, dynamically adjusting the frequency and amplitude of the signal through an internal control circuit to adapt to the material characteristics and structural morphology of different detection objects. At the same time, the digital signal generating module is communicatively connected with the control and synchronization module, and the frequency range and amplitude are set through an external programming interface, and a driving signal that meets the requirements of ultrasonic detection is generated.

3. A 3D ultrasonic driving circuit and switch control method of a power transmission fitting as claimed in claim 2, characterized in that: The multi-stage delay control module is composed of multiple digital delay units, each of which independently controls the signal delay of a transducer array element. The delay unit is implemented by a field programmable gate array FPGA or a programmable delay chip, and the accuracy of delay adjustment reaches nanosecond level; The delay control module inserts a delay in the signal propagation path so that the signal of each array element has a synchronous focusing characteristic. The input end of the delay control module is connected to the digital signal generation module, and the output end is connected to the high-gain low-noise power amplifier module.

4. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 3, characterized in that: The high-gain low-noise power amplifier module includes a broadband power amplifier, the operating frequency covers the range of 1MHz to 10MHz, and provides a signal gain of at least 30dB. The input end of the power amplifier is connected to the output end of the multi-stage delay control module, which is used to amplify the delay-adjusted signal to the power level required for excitation; The power amplifier module also includes an isolation circuit for separating the high-power output signal from the control signal to avoid interference transmission to the control and synchronization module.

5. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 4, characterized in that: The high-speed switch control module includes a plurality of high-speed response MOSFETs or GaN transistors, each transducer array element corresponds to an independent switch unit, and the switch unit controls the on and off of the excitation signal through the signal sent by the control and synchronization module; The response time of the switch control module is in nanoseconds. The switch control module is connected to the high-gain low-noise power amplifier module and transmits the excitation signal to each array element in turn.

6. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 5, characterized in that: The control and synchronization module is based on the FPGA unit and has a built-in high-precision clock source, which is used to generate synchronization signals to coordinate the work of the digital signal generation module, the multi-stage delay control module and the high-speed switch control module; The module receives control instructions from external devices through a high-speed parallel data channel and distributes phase adjustment and delay parameters to the corresponding modules. The control and synchronization module also manages the overall drive circuit through a dedicated communication interface to achieve precise coordination of delay adjustment and switch switching.

7. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 6, characterized in that: The FPGA unit includes a circuit for completing the delay adjustment and excitation power control of the local signal, receiving the instructions of the control and synchronization module, and executing the signal switching task. The local power management circuit is responsible for adjusting the power output level of the transducer array element to ensure that the driving signal meets the design requirements.

8. A driving circuit for 3D ultrasound of a power transmission fitting and a switch control method thereof as claimed in claim 7, characterized in that: The drive circuit is connected to the external device through a high-speed communication interface, which includes an SPI serial peripheral interface, an I2C integrated circuit communication or an Ethernet interface. The communication interface is used for data exchange between the external device and the control and synchronization module, and can receive control instructions sent by the external device and feedback the working status of the drive circuit; The interface also supports remote configuration of distributed control modules, enabling real-time adjustment and monitoring of array element excitation parameters.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

Images