Phased array ultrasonic detection method, device and equipment
By using multiple sets of piezoelectric wafers in the phased array ultrasonic testing system, fan scanning and zoning scanning can be performed simultaneously, which solves the problem that existing ultrasonic testing methods cannot meet the requirements of fast pipeline root welding quality under complex terrain of long-distance oil and gas pipelines. detection problems and achieve an efficient and simplified detection process.
Patent Information
- Application Number
- CN202310894812.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-20
- Publication Date
- 2025-01-21
AI Technical Summary
The existing ultrasonic detection methods cannot meet the requirements of long oil and gas pipelines for rapid testing of pipeline root welding quality under complex terrain, and the inspection equipment is large in size and the calibration test block is bulky, which cannot meet the needs of rapid testing.
Using the phased array ultrasonic testing method, by using multiple groups of piezoelectric crystals in the phased array probe, and controlling the excitation delay and excitation timing of the piezoelectric crystals, the two detection modes of fan scan scanning and zone scanning can be achieved simultaneously. This reduces the need for the number of probes and adapts to the detection of complex terrain.
It realizes the simultaneous provision of PAUT detection and AUT detection on the original hardware, reduces the cost of consumables and the size and complexity of scanning tooling, simplifies operations, improves the detection rate, and meets the needs of long-distance oil and gas pipelines under complex terrain. Requirements for rapid testing of welding quality.
Smart Images
Figure CN119335058A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of ultrasonic detection technology, and specifically relates to a phased array ultrasonic detection method, device and equipment. Background Art
[0002] Currently, weld inspection can only detect root defects through non-destructive testing or destructive testing after the entire weld metal is filled. At this time, repairing the root defects requires grinding off all the weld metal after root welding and re-welding, which increases the costs of welding materials, time, manpower, etc.
[0003] The girth weld inspection of long-distance oil and gas pipelines is also carried out after the entire weld metal is filled. The main inspection methods include radiographic (RT) inspection, fully automatic ultrasonic (AUT) inspection and phased array ultrasonic (PAUT) inspection. PAUT uses fan scanning to inspect welds with large-angle grooves and changes in butt gaps; AUT solves the problem of small-angle grooves or blunt edge inspections through partition scanning, and has good inspection effects. However, the inspection equipment is large in size and the calibration test blocks are bulky, requiring special engineering vehicles, which cannot meet the requirements of long-distance oil and gas pipelines for rapid inspection of pipeline root weld quality under complex terrain. Summary of the invention
[0004] The disclosed embodiment proposes a phased array ultrasonic detection solution to solve the problem that the existing ultrasonic detection method cannot meet the requirements of rapid detection of pipeline root weld quality in long-distance oil and gas pipelines under complex terrain.
[0005] A first aspect of an embodiment of the present disclosure provides a phased array ultrasonic detection method, which is applied to a phased array ultrasonic detection system. The system includes at least one pair of phased array probes, and the probes are composed of multiple groups of piezoelectric chips. The piezoelectric chips can reflect or receive ultrasonic waves. The method includes:
[0006] Acquire an area to be inspected and a detection mode, wherein the detection mode includes at least a sector scan and a partition scan, and the phased array probe is symmetrically placed on both sides of the area to be inspected;
[0007] Based on the area to be detected and the detection mode, determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip;
[0008] The piezoelectric chips are excited in sequence based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset in the detection mode.
[0009] In some embodiments of the present disclosure, determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip based on the area to be detected and the detection mode includes:
[0010] Based on the area to be detected and the detection mode, determining the shape and direction of the sound field required for detecting the area to be detected in the detection mode;
[0011] The piezoelectric chip to be excited and the excitation delay of the piezoelectric chip are determined based on the shape and direction of the acoustic field.
[0012] In some embodiments of the present disclosure, determining the shape and direction of the sound field required for detecting the area to be detected in the detection mode based on the area to be detected and the detection mode includes:
[0013] If the detection mode is sector scanning, the sector scanning range, angle interval and focus depth of the fan-shaped acoustic beam covering the area to be detected are determined based on a preset configuration.
[0014] If the detection mode is partition scanning, the area to be detected is divided into multiple partitions to be detected according to a preset configuration, and the focusing depth of the sound beam focused on the partition to be detected and the deflection angle relative to the extension direction of the probe are calculated based on the preset configuration.
[0015] In some embodiments of the present disclosure, the sequentially exciting the piezoelectric chips based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset in the detection mode includes:
[0016] If the detection mode is sector scanning, the excitation timing of each piezoelectric chip is controlled so that the sound waves excited by the piezoelectric chip form multiple fan-shaped sound beams through interference, and each sound beam covers the area to be detected with a preset sector scanning range, angle interval and focusing depth.
[0017] If the detection mode is partition scanning, the excitation timing of each piezoelectric chip is controlled so that the sound waves excited by the chip group form a sound beam with a preset deflection angle through interference phenomenon and focus on the partition to be detected at a preset depth.
[0018] In some embodiments of the present disclosure, controlling the excitation timing of each of the piezoelectric chips includes:
[0019] Numbering the piezoelectric wafers;
[0020] If the detection mode is a fan-scan inspection, the piezoelectric chips are divided into multiple groups according to a preset configuration, and the piezoelectric chips of the preset group are excited each time, and the piezoelectric chips in each group are excited in sequence according to the number;
[0021] If the detection mode is partition scanning and the area to be detected is divided into N partitions to be detected, the piezoelectric chips are dynamically divided into N groups according to a preset configuration based on the deflection angle and focusing depth of the sound beam corresponding to each partition to be detected, and the corresponding piezoelectric chip groups are excited in sequence in the order of the detection partitions, and the piezoelectric chips in each group are excited in sequence according to the numbers.
[0022] In some embodiments of the present disclosure, the method further includes:
[0023] The area to be inspected is respectively subjected to sector scanning and partition scanning within a preset time interval, and the excitation time of the chip group in the phased array probe is adjusted so that the images obtained by the sector scanning and the partition scanning of the area to be inspected appear on the display interface at the same time.
[0024] In some embodiments of the present disclosure, the method further includes:
[0025] Two sets of sector scans are formed by symmetrically placing the pair of phased array probes on both sides of the area to be detected;
[0026] By setting up the phased array probes on both sides in the same way, two sets of zone scans are formed.
[0027] In some embodiments of the present disclosure, the ultrasonic detection system further includes a TOFD probe, the detection mode further includes a TOFD scan, and the method further includes:
[0028] If the acquired detection mode is TOFD scanning, a TOFD scan is performed on the area to be detected by using the TOFD probe.
[0029] A second aspect of the embodiments of the present disclosure provides a phased array ultrasonic detection device, which is applied to a phased array ultrasonic detection system. The system includes at least one pair of phased array probes, wherein the probes are composed of a plurality of piezoelectric chips, and the piezoelectric chips can reflect or receive ultrasonic waves. The device includes:
[0030] An acquisition module, used for acquiring an area to be detected and a detection mode, wherein the detection mode at least includes a sector scan and a partition scan, and the phased array probe is symmetrically placed on both sides of the area to be detected;
[0031] A determination module, used for determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip based on the area to be detected and the detection mode;
[0032] The excitation module is used to sequentially excite the piezoelectric chips based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset by the detection mode.
[0033] A third aspect of the embodiments of the present disclosure provides a phased array ultrasonic detection device, including a memory and a processor.
[0034] The memory is used to store computer programs;
[0035] The processor is used to implement the method described in the first aspect of the present disclosure when executing the computer program.
[0036] In summary, the phased array ultrasonic detection method, device and equipment provided in each embodiment of the present invention realizes the simultaneous formation of fan scanning and partition scanning by one pair of probes through software control on the original number of probes, thereby providing PAUT detection and AUT detection on hardware similar to the PAUT detection system, reducing the cost of consumables, controlling the volume and complexity of the scanning tooling, making the operation simple and the detection rate higher, and meeting the requirements of long-distance oil and gas pipelines for rapid detection of pipeline root weld quality under complex terrain. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] The features and advantages of the present disclosure will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present disclosure in any way. In the accompanying drawings:
[0038] Figure 1 is a schematic diagram of a phased array ultrasonic detection system applicable to some embodiments of the present disclosure;
[0039] Figure 2 It is a schematic diagram of fan scanning inspection of the weld root;
[0040] Figure 3 This is a schematic diagram of the zone scanning of the weld root;
[0041] Figure 4 is a schematic diagram of a phased array ultrasonic detection method applicable to some embodiments of the present disclosure;
[0042] Figure 5 Schematic diagram of performing fan scanning and partition scanning on the root of a weld within a preset time as shown in some embodiments of the present disclosure
[0043] Figure 6 is a schematic diagram of a phased array ultrasonic detection device shown in some embodiments of the present disclosure;
[0044] Figure 7 It is a schematic diagram of a phased array ultrasonic detection device shown in some embodiments of the present disclosure. DETAILED DESCRIPTION
[0045] In the detailed description below, many specific details of the present disclosure are set forth by way of example in order to provide a thorough understanding of the relevant disclosure. However, it will be apparent to one of ordinary skill in the art that the present disclosure can be implemented without these details. It should be understood that the use of the terms "system," "device," "unit," and / or "module" in the present disclosure is a method for distinguishing different parts, elements, parts, or assemblies at different levels in a sequential arrangement. However, these terms may be replaced by other expressions if other expressions can achieve the same purpose.
[0046] It should be understood that when a device, unit or module is referred to as being "on," "connected to," or "coupled to" another device, unit or module, it may be directly on, connected to, coupled to, or communicating with other devices, units or modules, or there may be intermediate devices, units or modules, unless the context clearly indicates an exception. For example, the term "and / or" as used in this disclosure includes any and all combinations of one or more of the relevant listed items.
[0047] The terms used in this disclosure are only for describing specific embodiments and are not intended to limit the scope of this disclosure. As shown in the specification and claims of this disclosure, unless the context clearly indicates an exception, the words "one", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified features, wholes, steps, operations, elements and / or components, and such expressions do not constitute an exclusive list, and other features, wholes, steps, operations, elements and / or components may also be included.
[0048] Figure 1 is a schematic diagram of a phased array ultrasonic detection system applicable to the present disclosure, such as Figure 1 As shown, the phased array ultrasonic detection system 10 includes a control module 11, a delay device 12 and at least one pair of phased array probes 13.
[0049] The phased array probe 13 is composed of piezoelectric chips arranged at preset positions, and the piezoelectric chips can reflect or receive ultrasonic waves. The piezoelectric chips are numbered and logically divided into multiple groups.
[0050] During operation, the control module 11 transmits a trigger signal of a certain amplitude to the delay device 12, calculates the delay time of each piezoelectric chip according to the emission focusing rule, integrates the pulse width of the trigger signal, and loads the integrated pulse signal to each piezoelectric chip. Due to the existence of delay, the phase of the sound beam emitted by each piezoelectric chip is different, and the sound beam is superimposed in space to form an incident wavefront, and is focused at a certain depth, so as to detect defects in the workpiece.
[0051] The sound beam emitted by the piezoelectric chip will be reflected back when it encounters a defect in the workpiece, and the defect in the focusing area will form a reflection wavefront with a large amplitude. Due to the different spatial positions of the probe piezoelectric chips, the time for the reflected echo of the defect to reach each piezoelectric chip will also be different. The delay device calculates the receiving delay of each array element according to the receiving focusing law, and superimposes the echo signal of each array element in turn, and feeds it back to the control module 11. The control module 11 generates a detection image based on the echo signal, thereby realizing non-destructive detection of defects.
[0052] The phased array controls the time for each piezoelectric chip in the probe to transmit and receive signals according to the focusing law. Due to the time difference, the wavefront of the sound wave emitted by each piezoelectric chip gradually converges to a point in space, thereby achieving the effect of focusing the sound beam, and the focus area can be detected based on this. Commonly used phased array ultrasonic testing includes sector scanning and partition scanning.
[0053] Sector scanning is also called S scanning, which means exciting each piezoelectric chip from left to right at a set depth to form a sector scanning within a certain range of the detection area. Specifically, by placing two phased array probes symmetrically on both sides of the weld, controlling the independent excitation time of the same group of chips in the phased array probe, and forming a sector beam with the same focal length within a certain angle range, the sector beam coverage of the weld root can be achieved. Figure 2 It is a schematic diagram of fan scanning inspection of the weld root.
[0054] Partition scanning refers to dividing the weld into several partitions along the wall thickness direction, and each partition is tested using an independent detection scheme. Specifically, the trigger pulse transmitted by the delay device excites each group of piezoelectric chips in turn, and the set detection scheme is used to scan and detect each zone, and the sound field is detected in space for the unfused defect. Figure 2 This is a schematic diagram of the zone scanning of the weld.
[0055] In current projects, the PAUT system performs nondestructive testing on the area to be tested through sector scanning. The AUT system performs nondestructive testing on the area to be tested through partition scanning. To obtain a comprehensive test effect, it is necessary to use the PAUT system and the AUT system to test the test area separately, which is very cumbersome. In particular, the AUT system is generally large in size and the calibration test blocks are bulky, requiring a special engineering vehicle, and cannot meet the requirements of long-distance oil and gas pipelines for rapid detection of pipeline root weld quality under complex terrain. The present disclosure proposes a phased array ultrasonic detection solution, which realizes a pair of probes to form sector scanning and partition scanning at the same time through software control on the original probe, thereby providing PAUT detection and AUT detection based on hardware similar to the PAUT detection system, controlling the volume and complexity of the scanning tooling, and adapting to the requirements of long-distance oil and gas pipelines for rapid detection of pipeline root weld quality under complex terrain.
[0056] Figure 4 Schematic diagram of a phased array ultrasonic detection method applicable to some embodiments of the present disclosure. Figure 4 As shown, the method includes:
[0057] S410: Acquire an area to be inspected and a detection mode, wherein the detection mode at least includes sector scanning and partition scanning, and the phased array probe is symmetrically placed on both sides of the area to be inspected.
[0058] Specifically, unlike a PAUT detection system that can only use sector scanning or an AUT detection system that can only use partition scanning, the detection scheme disclosed in the present invention can use at least two detection modes: sector scanning and partition scanning.
[0059] First, obtain the detection mode and the area to be detected selected by the user. The area to be detected is generally the root of the weld. During the detection, the phased array probe needs to be placed symmetrically on both sides of the area to be detected.
[0060] S420: Based on the area to be detected and the detection mode, determine the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip.
[0061] S430: Exciting the piezoelectric chips in sequence based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset by the detection mode.
[0062] Specifically, when the detection mode selected by the user is the fan-scan inspection, the fan-scan range, angle interval and focus depth of the fan-shaped acoustic beam covering the root of the weld are determined based on the preset configuration, and then the excitation timing of each piezoelectric chip is controlled so that the sound waves excited by the piezoelectric chip form multiple fan-shaped acoustic beams through interference, and each of the acoustic beams covers the area to be inspected with a preset fan-scan range, angle interval and focus depth. In the fan-scan inspection mode, each of the piezoelectric chips is divided into multiple groups according to the preset configuration, and the piezoelectric chips of the preset group are excited each time, and the piezoelectric chips in each group are excited in sequence according to the number.
[0063] When the detection mode selected by the user is partition scanning, the area to be detected is first divided into multiple partitions to be detected according to the preset configuration, and the focal depth and the deflection angle of the sound beam focused on the partition to be detected relative to the extension direction of the probe are calculated. Then the excitation timing of each of the piezoelectric chips is controlled so that the sound waves excited by the piezoelectric chips in the group form a sound beam with a preset deflection angle through interference, and focus on the partition to be detected at a preset depth. In the partition scanning mode, the piezoelectric chips are dynamically divided into groups with the same number as the number of partitions to be detected, and a group of piezoelectric chips is responsible for the detection of one partition to be detected. The number of piezoelectric chips contained in each group is determined by the focal depth and deflection angle of the sound beam corresponding to the partition to be detected that it is responsible for detecting. Finally, the corresponding piezoelectric chip groups are excited in sequence in the order of the detection partitions, and the piezoelectric chips in each group are excited in sequence according to the numbers.
[0064] In some embodiments of the present disclosure, sector scanning and partition scanning are performed on the area to be inspected within a preset time interval, and the excitation time of the chip group in the phased array probe is adjusted so that the images obtained by the sector scanning and the partition scanning of the area to be inspected appear on the display interface at the same time. Figure 5 It is a schematic diagram of performing fan scanning and partition scanning on the root of a weld within a preset time as shown in some embodiments of the present disclosure.
[0065] In some embodiments of the present disclosure, two sets of sector scans are formed by symmetrically placing the pair of phased array probes on both sides of the area to be detected;
[0066] By setting up the phased array probes on both sides in the same way, two sets of zone scans are formed.
[0067] In some embodiments of the present disclosure, the ultrasonic detection system further includes a TOFD probe, and the detection mode further includes a TOFD scan.
[0068] If the acquired detection mode is TOFD scanning, the TOFD probe is used to perform TOFD scanning on the area to be inspected. TOFD is the abbreviation of Time Of Flight Diffraction, which refers to the ultrasonic diffraction time difference method. It is a method for detecting defects by relying on the diffraction energy obtained from the "end angle" and "end point" of the internal structure of the test piece to be inspected (mainly defects), and is used for defect detection, quantification and positioning.
[0069] Figure 6 Schematic diagram of a phased array ultrasonic detection device shown in some embodiments of the present disclosure. Figure 6 As shown, the phased array ultrasonic detection device 600 includes an acquisition module 610, a determination module 620, and an excitation module 630, wherein:
[0070] An acquisition module 610 is used to acquire an area to be detected and a detection mode, wherein the detection mode at least includes a sector scan and a partition scan, and the phased array probe is symmetrically placed on both sides of the area to be detected;
[0071] A determination module 620, configured to determine the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip based on the area to be detected and the detection mode;
[0072] The excitation module 630 is used to excite the piezoelectric chips in sequence based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips can be focused on the area to be detected in a manner preset by the detection mode.
[0073] One embodiment of the present disclosure provides a phased array ultrasonic detection device. Figure 7 As shown, the phased array ultrasonic detection device 700 includes a memory 720 and a processor 710, wherein the memory 720 is used to store a computer program; and the processor 710 is used to execute the computer program to realize Figure 4 The phased array ultrasonic detection method described in S410-S430.
[0074] In summary, the phased array ultrasonic detection method, device and equipment provided in each embodiment of the present invention realizes the simultaneous formation of fan scanning and partition scanning by one pair of probes through software control on the original number of probes, thereby providing PAUT detection and AUT detection on hardware similar to the PAUT detection system, reducing the cost of consumables, controlling the volume and complexity of the scanning tooling, making the operation simple and the detection rate higher, and meeting the requirements of long-distance oil and gas pipelines for rapid detection of pipeline root weld quality under complex terrain.
[0075] It should be understood that the above specific embodiments of the present disclosure are only used to illustrate or explain the principles of the present disclosure, and do not constitute a limitation of the present disclosure. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present disclosure should be included in the protection scope of the present disclosure. In addition, the claims attached to the present disclosure are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.
Claims
1. A phased array ultrasonic detection method, applied to a phased array ultrasonic detection system, the system comprising at least one pair of phased array probes, the probes being composed of a plurality of groups of piezoelectric chips, the piezoelectric chips being able to reflect or receive ultrasonic waves, characterized in that: include: Acquire an area to be inspected and a detection mode, wherein the detection mode includes at least a sector scan and a partition scan, and the phased array probe is symmetrically placed on both sides of the area to be inspected; Based on the area to be detected and the detection mode, determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip; The piezoelectric chips are excited in sequence based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset in the detection mode.
2. The method according to claim 1, characterized in that: The step of determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip based on the area to be detected and the detection mode comprises: Based on the area to be detected and the detection mode, determining the shape and direction of the sound field required for detecting the area to be detected in the detection mode; The piezoelectric chip to be excited and the excitation delay of the piezoelectric chip are determined based on the shape and direction of the acoustic field.
3. The method according to claim 2, characterized in that: The determining, based on the area to be detected and the detection mode, the shape and direction of the sound field required for detecting the area to be detected in the detection mode comprises: If the detection mode is sector scanning, the sector scanning range, angle interval and focus depth of the fan-shaped acoustic beam covering the area to be detected are determined based on a preset configuration. If the detection mode is partition scanning, the area to be detected is divided into multiple partitions to be detected according to a preset configuration, and the focusing depth of the sound beam focused on the partition to be detected and the deflection angle relative to the extension direction of the probe are calculated based on the preset configuration.
4. The method according to claim 1, characterized in that: The method of sequentially exciting the piezoelectric chips based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset by the detection mode includes: If the detection mode is sector scanning, the excitation timing of each piezoelectric chip is controlled so that the sound waves excited by the piezoelectric chip form multiple fan-shaped sound beams through interference, and each sound beam covers the area to be detected with a preset sector scanning range, angle interval and focusing depth. If the detection mode is partition scanning, the excitation timing of each piezoelectric chip is controlled so that the sound waves excited by the chip group form a sound beam with a preset deflection angle through interference phenomenon and focus on the partition to be detected at a preset depth.
5. The method according to claim 4, characterized in that: The controlling of the excitation timing of each of the piezoelectric chips comprises: Numbering the piezoelectric wafers; If the detection mode is a fan-scan inspection, the piezoelectric chips are divided into multiple groups according to a preset configuration, and the piezoelectric chips of the preset group are excited each time, and the piezoelectric chips in each group are excited in sequence according to the number; If the detection mode is partition scanning and the area to be detected is divided into N partitions to be detected, the piezoelectric chips are dynamically divided into N groups according to a preset configuration based on the deflection angle and focusing depth of the sound beam corresponding to each partition to be detected, and the corresponding piezoelectric chip groups are excited in sequence in the order of the detection partitions, and the piezoelectric chips in each group are excited in sequence according to the numbers.
6. The method according to claim 1, characterized in that: The method further comprises: The area to be inspected is respectively subjected to a sector scan and a partition scan within a preset time interval, and the excitation time of the chip group in the phased array probe is adjusted so that the images obtained by the sector scan and the partition scan of the area to be inspected appear on the display interface at the same time.
7. The method according to claim 1, characterized in that: The method further comprises: Two sets of sector scans are formed by symmetrically placing the pair of phased array probes on both sides of the area to be detected; By setting up the phased array probes on both sides in the same way, two sets of zone scans are formed.
8. The method according to claim 1, characterized in that: The ultrasonic detection system further includes a TOFD probe, the detection mode further includes a TOFD scan, and the method further includes: If the acquired detection mode is TOFD scanning, a TOFD scan is performed on the area to be detected by using the TOFD probe.
9. A phased array ultrasonic detection device, applied to a phased array ultrasonic detection system, the system comprising at least one pair of phased array probes, the probes being composed of a plurality of piezoelectric chips, the piezoelectric chips being able to reflect or receive ultrasonic waves, characterized in that: include: An acquisition module, used for acquiring an area to be detected and a detection mode, wherein the detection mode at least includes a sector scan and a partition scan, and the phased array probe is symmetrically placed on both sides of the area to be detected; A determination module, used for determining the piezoelectric chip to be excited and the excitation delay of the piezoelectric chip based on the area to be detected and the detection mode; The excitation module is used to sequentially excite the piezoelectric chips based on the excitation delay so that the sound field formed by the multiple groups of piezoelectric chips is focused on the area to be detected in a manner preset by the detection mode.
10. A phased array ultrasonic detection device, comprising a memory and a processor, The memory is used to store computer programs; The processor is configured to implement the method according to any one of claims 1 to 8 when executing the computer program.