CN112799138B - High-sensitivity metal foreign matter detection probe of ultrathin material production line, working method and manufacturing method thereof - Google Patents
High-sensitivity metal foreign matter detection probe of ultrathin material production line, working method and manufacturing method thereof Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 33
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides a high-sensitivity metal foreign matter detection probe of an ultrathin material production line, and a working method and a manufacturing method thereof, and is characterized by comprising the following steps: the device comprises a signal generation module, a transmitting coil, a receiving coil and a signal receiving module; the transmitting coil is in a spiral shape, is arranged on the lower surface of the flat insulating substrate, and is connected with the signal generating module; the receiving coils are two spiral receiving coils which are symmetrically arranged and have the same shape and size, are arranged on the upper surface of the flat insulating substrate, and are connected with the signal receiving module. The metal detector has greatly simplified installation complexity, and the receiving and transmitting coils are embedded in the same insulating substrate by adopting the phase sensitive detection technology, and the spiral coil is close to the detected object, so that the sensitivity is high.
Description
Technical Field
The invention relates to the technical field of assembly line production and detection, in particular to a high-sensitivity metal foreign matter detection probe of an ultrathin material production line, and a working method and a manufacturing method thereof.
Background
The structure of the existing online metal detection probe is generally in a hollow form, namely the probe is in a hollow closed annular structure, a detected object passes through the middle of the probe, if the detected object contains metal foreign matters, the current in a coil of the probe is changed, and then the current signal is amplified, detected and filtered to output a detection signal, so that the metal foreign matter detection function is realized.
The structure has the problem of difficult installation, because the existing assembly line is already installed, the framework of the assembly line is generally made of metal materials, and cable wiring is often arranged below the assembly line, if a probe with a hollow closed annular structure is directly installed on the assembly line, a metal frame and a cable can pass through a probe detection space, so that the probe fails.
The existing installation mode is to add a small section of independent assembly line made of nonmetallic materials, plug the assembly line into the existing assembly line, and install a metallic foreign matter detection probe on the section of special assembly line. This increases the cost of the pipeline, which is wasteful and often requires modification of the plant layout.
In particular, in an ultrathin material production line such as cloth and paper, the production of cloth or paper is continuous, and in order to save planar space, the layout of the production line of cloth or paper is often three-dimensional multi-layer layout, unlike the production line of bread, candy, sanitary towel and the like, and it is difficult for a third party manufacturer to insert a section of production line in the middle, so how to embed a metal detection probe in the middle of the ultrathin material production line is a difficult problem.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides a novel high-sensitivity metal foreign matter detection probe of an ultrathin material production line, and a working method and a manufacturing method thereof, and the novel high-sensitivity metal foreign matter detection probe specifically adopts the following technical scheme:
the utility model provides a high sensitivity metallic foreign matter detection probe of ultra-thin material production line which characterized in that includes: the device comprises a signal generation module, a transmitting coil, a receiving coil and a signal receiving module; the transmitting coil is in a spiral shape, is arranged on the lower surface of the flat insulating substrate, and is connected with the signal generating module; the receiving coils are two spiral receiving coils which are symmetrically arranged and have the same shape and size, are arranged on the upper surface of the flat insulating substrate, and are connected with the signal receiving module.
Preferably, the transmitting coil and the receiving coil are embedded into the hollow grooves of the insulating substrate.
Preferably, the insulating substrate is mounted in a housing made of insulating material; the shell is arranged on the bracket through a rotating mechanism; the rotating mechanism enables the plane of the insulating substrate to rotate or clamp in 360 degrees.
Preferably, the side wall of the shell perpendicular to the insulating substrate is coated with a non-closed metal powder strip or a graphite strip.
Preferably, the rotating mechanism is of a ratchet structure, so that the shell has the freedom degree of unidirectional stepping and circulating rotation, and the damping of the pawl is realized through a spring or an unbalanced lever structure; the shell of the rotating mechanism is provided with a pulling rod, when the pulling rod is rotated to pull the pawl open, the probe has the degree of freedom of reverse rotation, and after the pulling rod is released, the pawl is clamped.
Preferably, the upper cover plate of the shell is connected with the shell through a first slot, and the insulating substrate is connected with the shell through a second slot parallel to the first slot; the main control board, the emission driving board, the receiving and signal processing board and the insulating substrate are relatively and vertically arranged in the shell; the transmitting driving board and the receiving and signal processing board are respectively and electrically connected with the main control board; and the two ends of the transmitting coil and each spiral receiving coil are respectively connected to the main control board by outgoing lines.
Preferably, the main control board is provided with: the DSP or MCU, the DDS and the memory chip, the main control board outputs signals to the transmitting driving board to drive the transmitting coil to transmit wireless signals; the signal received by the receiving coil is input to a differential amplifier of a receiving and signal processing board, then detected and amplified, and then sent to a DSP or MCU of a main control board for processing, and the result data is output to a UI module positioned outside the shell; the UI module includes: the touch display screen, the CPU board, the storage module, the network module and the serial communication interface are connected with the main control board through the serial communication interface.
And the working method according to the probe structure is characterized in that: the signal generating module generates sine waves and sends the sine waves through the transmitting coil; when the metal foreign matter exists in the ultrathin material, the metal foreign matter sequentially passes through the two receiving coils, so that differential signals of induced currents of the two coils are unbalanced, when the metal foreign matter passes through the first coil from far to near and then passes through the second line diagram from near, the differential signals are changed from weak to strong, then the opposite direction is changed from weak to strong, and then the alternating signals are generated, so that the metal foreign matter is acquired by the signal receiving module.
Preferably, the main control module on the main control board generates sine waves, the transmitting drive board drives the transmitting coil to emit 200KHZ to 600KHZ frequency, when metal foreign matters exist in the ultrathin material, the metal foreign matters sequentially pass through the two receiving coils, so that differential signals of induced currents of the two coils are unbalanced, when the metal foreign matters pass through the first coil from far to near, then pass through the second line diagram from near, the differential signals are changed from weak to weak, then the opposite direction is changed from weak to strong, and then the strong to weak, so as to generate an alternating signal; the receiving and signal processing board amplifies, detects and filters the signal, and then transmits the signal to the CPU of the main control board for processing; the main control module outputs the data of the processing result to the UI module through the serial port, the CPU board of the UI module displays the signal intensity of the metal foreign matters on the display screen after receiving and processing the data, and if the signal intensity exceeds a threshold value, an alarm sound is sent out, and information is sent to the server through the network module.
The manufacturing method of the high-sensitivity metal foreign matter detection probe of the ultrathin material production line is characterized by comprising the following steps of:
step S1: the inner side walls of the shell are coated with conductive materials to form an unclosed annular shielding belt;
step S2: the transmitting board, the receiving and signal processing board and the main control board are vertically inserted from an opening above the shell;
step S3: inserting a flat insulating substrate along a groove of a second layer above the side surface of the housing; the upper surface of the flat insulating substrate is symmetrically provided with two spiral receiving coils with the same shape and size, and the lower surface of the flat insulating substrate is provided with a spiral transmitting coil;
step S4: inserting 2 transmitting coil extension lines into the transmitting driving plate for welding firmly, and inserting 4 receiving coil extension lines into the receiving and signal processing plate for welding firmly;
step S5: installing a patch cord between the main control board and the transmitting coil and the receiving coil;
step S6: inserting an upper cover from a slot of a first layer above the side surface of the shell;
step S7: a sealing plate is vertically inserted from above the shell;
step S8: and serial connecting wires between the main control board and the UI module are arranged and led out from the through holes of the sealing plate.
The invention has the advantages that the detection sensitivity is high, the manufacturing and the installation process are simple, when the invention is installed, the probe is only required to be erected by the bracket, one side of the receiving coil is close to cloth or paper on a production line to be detected by rotating the probe, the probe can rotate 360 degrees, the pawl can be used for clamping and locking after rotating in place, the metal foreign matter can be detected by being embedded into the original production line without changing the original production line, the installation complexity of the metal detector is greatly simplified, and the receiving and transmitting coils are embedded into the same insulating substrate by adopting the phase-sensitive detection technology, and the spiral coil is also close to a detected object, so the sensitivity is high.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional front view of a probe structure according to an embodiment of the present invention;
FIG. 3 is a schematic side cross-sectional view of a probe structure according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a transmitting and receiving coil and its substrate in accordance with an embodiment of the present invention;
FIG. 5 is a schematic illustration of the structure of an outer shell shielding coating in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of a UI module according to an embodiment of the invention;
FIG. 7 is a schematic diagram of a mounting structure for use in an embodiment of the present invention.
Detailed Description
In order to make the features and advantages of the present patent more comprehensible, embodiments accompanied with figures are described in detail below:
as shown in fig. 1, the main structure of the high-sensitivity metal foreign matter detection probe of the ultra-thin material production line provided by the device of the embodiment includes: the detection probe, rotary device, support, UI module.
As shown in fig. 2 and 3, the detection probe of the present embodiment includes: the control module is arranged in the shell, the shell is made of insulating materials such as plastic or epoxy resin, and the side wall of the shell is coated with an unclosed metal powder belt or graphite belt to shield interference signals; the upper and lower surfaces of the shell are pure insulating layers, and are not coated with conductive materials.
Specifically, the structure of the transmitting and receiving coils is shown in fig. 4, a flat insulating substrate is arranged in the middle, two spiral receiving coils with the same shape and size are embedded in the hollow upper surface, and the two spiral receiving coils are symmetrically placed; the lower surface is hollowed and embedded with a spiral transmitting coil. Each coil has two lead wires connected to the control board, the intersections of the lead wires and the spiral are separated by an insulating material such as an electrical tape.
The housing has a U-shaped structure, and the upper cover is movable, and the section is shown in fig. 5.
As a preferable scheme, the rotating device of the embodiment is a ratchet structure, the probe can rotate in a unidirectional stepping and circulating way, and the damping of the pawl is realized through a spring or an unbalanced lever structure; the outer shell of the rotating device is provided with a pulling rod, the pawl can be pulled open manually by rotating the pulling rod, so that the probe can rotate reversely, and the pawl is clamped after the pulling rod is released. Because this structure is a mature design, the present embodiment does not provide any drawing for detailed description, and as such, it can also be replaced by any existing structure that can enable the detection plane of the detection probe to rotate 360 and lock at any angle.
In this embodiment, the control module includes a main control board, a transmitting driving board, a receiving and signal processing board, where the main control board has a DSP or MCU, a DDS, and a memory chip, the main control board outputs signals to the transmitting driving board to drive the transmitting coil to transmit wireless signals, the signals received by the receiving coil are input to a differential amplifier of the receiving board, then detected and amplified, and then sent to the DSP or MCU of the main control board for processing, and output result data to the UI module.
As shown in fig. 6, the UI module is designed outside the shell of the shell and includes a touch display screen, a CPU board, a storage module, a network module, a serial communication interface, where the serial communication interface is connected with the main control board, and the UI module is connected to the server through the network module.
Preferably, the CPU of the main control module provided in this embodiment is a MCU including but not limited to a DSP of TI or STM32, the display screen is a universal intelligent liquid crystal touch screen, the CPU of the UI module is an 8-bit or more single chip microcomputer including but not limited to 51, PIC, raspberry pie, and the network module includes but not limited to raspberry self-contained or W5500.
The network server includes, but is not limited to, a TCP Socket server developed based on JAVA or VC or DELPHI.
The manufacturing method of the probe provided by the embodiment comprises the following steps:
s1, conducting materials such as copper powder, silver powder or carbon powder are coated on the inner side wall of the shell to form an unclosed annular shielding belt, as shown in fig. 4.
S2, inserting a transmitting plate, a receiving and signal processing plate and a main control plate from the upper part of the shell
S3, inserting a transmitting and receiving coil plate along a groove of a second layer above the side surface of the shell, wherein the coil is embedded on the plate, and the position of the groove is shown in figure 3.
S4, inserting the 2 extension lines of the transmitting coil into the transmitting driving plate for welding firmly, and inserting the 4 extension lines of the receiving coil into the receiving plate for welding firmly.
S5, installing a patch cord between the main control board and the transmitting and receiving board.
S6, inserting an upper cover from a groove of the first layer above the side surface of the shell.
S7, inserting a sealing plate from above the shell, wherein the position is shown in fig. 2.
S8, installing a serial connection line between the main control board and the UI module. (led out from the through hole of the sealing plate)
As the working principle of the scheme of the embodiment: when the metal foreign matter is in cloth, the metal foreign matter sequentially passes through the two receiving coils, so that differential signals of induced currents of the two coils are unbalanced, when the metal foreign matter passes through the first coil from far to near, then passes through the second line diagram, the differential signals are changed from weak to weak, then changed from weak to weak in the opposite direction, and then changed from strong to weak, and an alternating signal is generated. The receiving and signal processing board amplifies, detects, filters and sends the signal to the CPU of the main control module for processing. The main control module outputs the data of the processing result to the UI module through the serial port, the CPU board of the UI module displays the signal intensity of the metal foreign matters on the display screen after receiving and processing the data, and if the signal intensity exceeds a threshold value, an alarm sound is sent out, and information is sent to the server through the network module.
As shown in figure 7, the invention has the advantages that the detection sensitivity is high, the manufacturing and mounting process is simple, the probe is only required to be erected by a bracket during mounting, one side of the receiving coil is close to cloth or paper on a production line to be detected by rotating the probe, the probe can be rotated by 360 degrees, the pawl can be used for clamping and locking after rotating in place, the metal foreign matter can be detected by being embedded into the original production line without changing the original production line, the mounting complexity of the metal detector is greatly simplified, and the receiving and transmitting coils are embedded into the same insulating substrate by adopting a phase-sensitive detection technology, and the receiving and transmitting coils are also close to a detected object by adopting a spiral coil, so that the sensitivity is high.
Specific examples of the installation and use of the apparatus of the present embodiment in a cloth manufacturing plant are provided below:
1. pressing a menu- - - - - "initialize" at a touch screen point "
The top of the probe should be empty at this time, i.e. there should be no cloth on top. Because the two receiving coils of the detector are unlikely to be identical and symmetrical, interference exists in the environment, and the master control still receives a weak background signal even though no detection object exists. The master records this background signal and calculates the average. If the average value exceeds the threshold value, the environment interference is too strong or the quality of the product is unqualified, the main control module outputs data to the UI module, and the initialization result is displayed on the display screen.
2. Pressing a menu- - - - - - - - - - "learn" on a touch screen "
And starting a cloth assembly line, wherein the cloth possibly contains a certain amount of water and is unevenly distributed, and the two receiving coils are used for receiving interference signals in the movement process of the cloth, and the master control can receive voltage signals with a certain amplitude after amplifying, detecting and filtering. The master records this background signal and calculates the average. If the average value exceeds the threshold value, the product effect is too strong, the main control adjusts the phase of the transmitting signal to weaken the product effect, then data is output to the UI module, and the learning result is displayed on the display screen. The learning results of various products can be stored in the storage module or read from the storage module.
3. Pressing a menu- "run" at a touch screen "
The device is arranged in a cloth production workshop as shown in fig. 7, a cloth assembly line is started, if the cloth contains metal foreign matters, in the process of cloth movement, two receiving coils receive strong interference signals, after amplification, detection and filtering treatment, a main control can receive voltage signals with a certain amplitude, the main control filters the signals according to a certain algorithm and calculates an average value, the main control outputs data to a UI module, the signal intensity is displayed on a display screen, if the signal exceeds a detection threshold value, the metal diameter exceeds a limit, the UI module sends out alarm sounds, and the network module outputs alarm information to a server.
4. Pressing a menu- "stop" at a touch-screen point "
The system stops detecting.
The patent is not limited to the best mode, any person can obtain the high-sensitivity metal foreign matter detection probe of other various ultra-thin material production lines under the teaching of the patent, and the working method and the manufacturing method thereof, and all equivalent changes and modifications made according to the scope of the application of the invention are covered by the patent.
Claims (6)
1. The utility model provides a high sensitivity metallic foreign matter detection probe of ultra-thin material production line which characterized in that includes: the device comprises a signal generation module, a transmitting coil, a receiving coil and a signal receiving module; the transmitting coil is in a spiral shape, is arranged on the lower surface of the flat insulating substrate, and is connected with the signal generating module; the receiving coils are two spiral receiving coils which are symmetrically arranged and have the same shape and size, are arranged on the upper surface of the flat insulating substrate, and are connected with the signal receiving module;
the insulating substrate is arranged in the shell made of insulating materials; the shell is arranged on the bracket through a rotating mechanism; the rotating mechanism enables the plane of the insulating substrate to rotate or clamp at 360 degrees;
the side wall of the shell, which is vertical to the insulating substrate, is coated with an unclosed metal powder strip or graphite strip;
the signal generating module generates sine waves and sends the sine waves through the transmitting coil; when the metal foreign matter exists in the ultrathin material, the metal foreign matter sequentially passes through the two receiving coils, so that differential signals of induced currents of the two coils are unbalanced, and when the metal foreign matter passes through the first coil from far to near and then passes through the second line diagram from near, the differential signals are changed from weak to strong, then the opposite direction is changed from weak to strong, and then the alternating signals are generated, so that the metal foreign matter is acquired by the signal receiving module;
the manufacturing method comprises the following steps:
step S1: the inner side walls of the shell are coated with conductive materials to form an unclosed annular shielding belt;
step S2: the transmitting board, the receiving and signal processing board and the main control board are vertically inserted from an opening above the shell;
step S3: inserting a flat insulating substrate along a groove of a second layer above the side surface of the housing; the upper surface of the flat insulating substrate is symmetrically provided with two spiral receiving coils with the same shape and size, and the lower surface of the flat insulating substrate is provided with a spiral transmitting coil;
step S4: inserting 2 transmitting coil extension lines into the transmitting driving plate for welding firmly, and inserting 4 receiving coil extension lines into the receiving and signal processing plate for welding firmly;
step S5: installing a patch cord between the main control board and the transmitting coil and the receiving coil;
step S6: inserting an upper cover from a slot of a first layer above the side surface of the shell;
step S7: a sealing plate is vertically inserted from above the shell;
step S8: leading out from a through hole or a socket of the sealing plate, and installing a serial connecting wire between the main control board and the UI module and a power line of the probe;
during installation, only need set up the probe with the support, rotate the probe and make receiving coil one side press close to cloth or paper on the production assembly line of waiting to detect, the probe can 360 degrees rotations, and the screens locking after rotating in place, need not change former assembly line, just can imbed in the former assembly line and carry out metal foreign matter and detect, greatly simplified metal detector's installation complexity, and owing to adopt the phase-sensitive technology of detecting, receiving and transmitting coil imbeds on same insulating substrate, adopts helical coil, press close to the detection thing again, therefore sensitive height.
2. The high-sensitivity metallic foreign matter detection probe of an ultra-thin material production line of claim 1, wherein: the transmitting coil and the receiving coil are embedded into the hollow grooves of the insulating substrate.
3. The high-sensitivity metallic foreign matter detection probe of an ultra-thin material production line of claim 1, wherein: the rotating mechanism is of a ratchet structure, so that the shell has the freedom degree of unidirectional stepping circulation rotation, and the damping of the pawl is realized through a spring or an unbalanced lever structure; the shell of the rotating mechanism is provided with a pulling rod, when the pulling rod is rotated to pull the pawl open, the probe has the degree of freedom of reverse rotation, and after the pulling rod is released, the pawl is clamped.
4. The high-sensitivity metallic foreign matter detection probe of an ultra-thin material production line of claim 1, wherein: the upper cover plate of the shell is connected with the shell through a first slot, and the insulating substrate is connected with the shell through a second slot parallel to the first slot; the main control board, the emission driving board, the receiving and signal processing board and the insulating substrate are relatively and vertically arranged in the shell; the transmitting driving board and the receiving and signal processing board are respectively and electrically connected with the main control board; and two ends of the transmitting coil and each spiral receiving coil are respectively connected to the transmitting driving plate and the receiving and signal processing plate by outgoing lines.
5. The high-sensitivity metallic foreign matter detection probe of the ultra-thin material production line of claim 4, wherein: the main control board is provided with: the DSP or MCU, the DDS and the memory chip, the main control board outputs signals to the transmitting driving board to drive the transmitting coil to transmit wireless signals; the signal received by the receiving coil is input to a differential amplifier of a receiving and signal processing board, then detected and amplified, and then sent to a DSP or MCU of a main control board for processing, and the result data is output to a UI module positioned outside the shell; the UI module includes: the touch display screen, the CPU board, the storage module, the network module and the serial communication interface are connected with the main control board through the serial communication interface.
6. The working method of the high-sensitivity metal foreign matter detection probe of the ultra-thin material production line according to claim 5, wherein the working method is characterized by comprising the following steps: the main control module on the main control board generates sine waves, the transmitting coil is driven by the transmitting driving board to emit 200KHZ to 600KHZ frequency, when metal foreign matters exist in the ultrathin material, the metal foreign matters sequentially pass through the two receiving coils, so that differential signals of induced currents of the two coils are unbalanced, when the metal foreign matters pass through the first coil from far to near and then pass through the second coil from near to far, the differential signals are changed from weak to strong, then the reverse direction is changed from weak to strong, and then the strong to weak, so that an alternating signal is generated; the receiving and signal processing board amplifies, detects and filters the signal, and then transmits the signal to the CPU of the main control module for processing; the main control module outputs the data of the processing result to the UI module through the serial port, the CPU board of the UI module displays the signal intensity of the metal foreign matters on the display screen after receiving and processing the data, and if the signal intensity exceeds a threshold value, an alarm sound is sent out, and information is sent to the server through the network module.
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| CN202110138897.4A CN112799138B (en) | 2021-02-02 | 2021-02-02 | High-sensitivity metal foreign matter detection probe of ultrathin material production line, working method and manufacturing method thereof |
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| CN202110138897.4A CN112799138B (en) | 2021-02-02 | 2021-02-02 | High-sensitivity metal foreign matter detection probe of ultrathin material production line, working method and manufacturing method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016080A1 (en) * | 2015-07-24 | 2017-02-02 | 广州彩磁信息技术有限公司 | Security inspection system and method based on broadband detection and visual display using conjugated electromagnetic transmitting and receiving arrays |
| CN107797151A (en) * | 2017-12-20 | 2018-03-13 | 福建省麦雅数控科技有限公司 | A kind of reverse buckling type metal detection probe |
| CN109060937A (en) * | 2018-06-26 | 2018-12-21 | 西安石油大学 | A kind of induction type magnetic acoustical coupling oil-water two-phase flow Multi-parameter detection device and method |
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| TWI606666B (en) * | 2016-04-25 | 2017-11-21 | Wireless power transmission device and structure of metal foreign body detecting coil |
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| WO2017016080A1 (en) * | 2015-07-24 | 2017-02-02 | 广州彩磁信息技术有限公司 | Security inspection system and method based on broadband detection and visual display using conjugated electromagnetic transmitting and receiving arrays |
| CN107797151A (en) * | 2017-12-20 | 2018-03-13 | 福建省麦雅数控科技有限公司 | A kind of reverse buckling type metal detection probe |
| CN109060937A (en) * | 2018-06-26 | 2018-12-21 | 西安石油大学 | A kind of induction type magnetic acoustical coupling oil-water two-phase flow Multi-parameter detection device and method |
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| 基于TM4C123G的金属微颗粒探测系统研究与实现;王明全;袁程磊;李治华;王远航;;电子产品世界(Z1);全文 * |
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