Magnetic susceptibility instrument for monitoring heavy metal pollution in sand beach environment

Abstract

The invention discloses a magnetic susceptibility instrument for monitoring heavy metal pollution in a sand beach environment, and the magnetic susceptibility instrument comprises a host body, a support frame, an adjusting support arc foot, a direct current motor, a positioning integrated probe, a battery placement bin and a host internal component, the front surface of the host body is embedded with an LCD touch screen, and one side of the top surface is provided with a triangular mounting support plate; supporting frames are fixed to the triangular installation supporting plates, fixing clamping frames are installed at the tops of the supporting frames, detectors are clamped in the fixing clamping frames, and the three sets of supporting frames are distributed in the middles of the left side and the right side and the middle of the rear side of the main machine body. The positioning probe controls the depth to prevent sand, the drawing battery bin is sealed to prevent sand and moisture, modules in the host machine cooperate to complete magnetic susceptibility measurement, the problems of unstable supporting, sand interference and sand entering pain points of the interface and the battery bin are solved, the supporting stability and the measurement precision are improved, the storage is convenient, and the battery is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of geological exploration and environmental monitoring equipment technology, specifically a magnetic susceptibility meter for monitoring heavy metal pollution in beach environments. Background Technology

[0002] Magnetic susceptibility meters, by detecting the magnetic characteristics of substances, are widely used in environmental science for the rapid identification of pollutants, such as magnetic particulate matter from industrial emissions, heavy metal pollution containing magnetic carriers, and pollution source tracing analysis, using magnetic characteristics to determine the source of pollutants. In the field of heavy metal pollution screening in beach environments, magnetic susceptibility signals are a highly efficient proxy indicator for identifying the type and degree of heavy metal pollution—natural sediments in beaches have weak magnetic properties, while industrial pollution (such as dust from steel plants, fly ash from coal combustion, and pollutants from the dismantling of electronic waste) usually carries strongly magnetic substances. By analyzing differences in magnetic susceptibility, polluted areas can be quickly located and pollution boundaries can be delineated. However, existing magnetic susceptibility meters (such as the general-purpose MS2 magnetic susceptibility meter) suffer from the following unavoidable problems due to their lack of specific design for beach pollution screening scenarios: Poor support stability: Most devices use double-leg folding supports or lack a dedicated support structure. The soft and uneven surface of the beach makes the device prone to tipping over, leading to repeated measurements or shifts in the measurement point location, affecting the accuracy of the pollution distribution map and making it impossible to accurately delineate the pollution area; Severe sand interference: The probe lacks dust and sand protection design, allowing sand particles to easily enter the induction coil area, causing magnetic field signal disturbances and making it impossible to accurately identify low-concentration magnetic pollutants (such as lightly polluted areas); Most connection interfaces are open plug-and-play structures, allowing fine sand to easily clog the interface gaps, causing signal interruption, affecting the continuity of pollution screening, and resulting in data loss during large-scale surveys; Battery and storage deficiencies: Battery compartment... Most of these devices are screw-fixed, requiring tools to open and close, and lack a sealing design. Sand and moisture can easily penetrate and corrode the battery, causing sudden power outages during field pollution screening and preventing timely saving of collected pollution data. The probes lack a dedicated fixing structure, making them susceptible to damage from impacts when idle, and the insertion depth into the beach pollution layer cannot be precisely controlled—inconsistent sampling depths at different pollution points lead to incomparable magnetic susceptibility data and poor data repeatability. Environmental adaptability is insufficient: the large diurnal temperature range on beaches, coupled with the lack of temperature compensation in existing instruments, makes the output frequency of the low-frequency magnetic field generator susceptible to temperature fluctuations, further reducing the accuracy of monitoring pollutant magnetic signals and potentially misclassifying mild pollution as no pollution. Data relies solely on wired transmission; without power on the beach, the risk of data loss is high, failing to meet the mobile monitoring needs of large-scale pollution surveys on coastal beaches. Summary of the Invention

[0003] The purpose of this invention is to provide a magnetic susceptibility meter for monitoring heavy metal pollution in beach environments, in order to solve the problems of unstable support, sand interference with pollutant monitoring, and sand ingress failure of interfaces and battery compartments in traditional magnetic susceptibility meters in beach pollution screening scenarios.

[0004] In order to achieve the above object, the present application provides the following technical scheme: a magnetic susceptibility instrument for monitoring heavy metal pollution in a beach environment, comprising a host body, a support frame, an adjustable support arc foot, a DC motor, a positioning integrated probe, a battery storage bin and internal components of the host, the front surface of the host body is embedded with an LCD touch screen, one side of the top surface is provided with a triangular mounting plate, a support frame is fixed on the triangular mounting plate, a fixed clamping frame is installed on the top of the support frame, a detector is clamped in the fixed clamping frame, there are three groups of support frames distributed in the middle and rear of the left and right sides of the host body, an arc foot movable slot is formed in the inner side of each support frame, arc foot limiting side grooves are arranged on the two side walls of the arc foot movable slot, the adjustable support arc foot is an arc-shaped metal part embedded in the arc foot movable slot of the support frame, an inner arc rack is welded to the outer side wall of the adjustable support arc foot, the DC motor is installed at the inner bottom end of the arc foot movable slot close to one side of the host body, an output shaft sleeve is provided with an external gear, the external gear is engaged with the inner arc rack, a connecting hinge is installed on the outer bottom of the support frame, a swing rod is rotatably connected to the connecting hinge, a brush strip is installed at the end of the swing rod, the positioning integrated probe is in a cylindrical structure, a tapered sampling end is arranged at the top end, a depth scale line is engraved on the side wall, a nylon positioning ring is sleeved on the outer side, a probe connector is arranged at the tail, a probe end is connected between the probe connector and the positioning integrated probe, the probe connector is connected to a rotating locking female interface on the side of the host body through a probe connecting line, an interface sealing cover is buckled on the outer side of the rotating locking female interface, a silica gel dustproof cover is sleeved on the tapered sampling end, the battery storage bin is arranged at the bottom of the host body, a pull clamping frame is embedded in the inside, a battery abutting plate is installed at the inner left side of the pull clamping frame, a pull basket plate is installed at the right side bottom of the battery abutting plate, a battery is arranged on the pull basket plate, the left side of the battery is clamped with the right side of the battery abutting plate, positive magnetic strips are arranged on the front and rear sides of the battery abutting plate, the positive magnetic strips are matched with negative magnetic grooves arranged at the position of the battery storage bin opening, a battery storage bin sealing strip is embedded at the edge of the battery storage bin opening, a host connecting key, a transmission module, a low-frequency magnetic field generator, a magnetic susceptibility data processor and a temperature compensation module are arranged in the host body, the host connecting key is connected with a detection connecting key on the detector, the transmission module, the low-frequency magnetic field generator, the magnetic susceptibility data processor and the temperature compensation module are all arranged in the host body, the low-frequency magnetic field generator is electrically connected with the magnetic susceptibility data processor, and the temperature compensation module is connected in series with the magnetic susceptibility data processor.

[0005] As a preferred technical scheme of the present application, the nylon positioning ring on the outer side of the positioning integrated probe is a circular ring, the inner diameter is matched with the outer diameter of the positioning integrated probe, a top screw is arranged on the outer side of the nylon positioning ring, a probe positioning frame is arranged below the bottom surface of the host body, a metal sheet is attached to the inner side of the probe positioning frame, a magnet block is arranged on the host body corresponding to the probe positioning frame, and the metal sheet is adsorbed with the magnet block.

[0006] As a preferred technical scheme of the present application, the support adjusting arc foot bottom end is welded with a support plate, the support plate is a rectangular metal plate, the bottom surface is uniformly distributed with inclined ribs, and the inclined ribs are triangular protrusions, the brush strip is made of nylon and is attached to the surface of the adjusting support arc foot.

[0007] As a preferred technical scheme of the present application, the rotating locking female connector is a cylindrical connector, the inner side is provided with internal threads and is matched with the external threads of the probe connector of the integrated probe positioning probe, two fluororubber sealing rings are embedded in the rotating locking female connector, the connector sealing cover is made of rubber, the inner side is provided with a protrusion and is clamped with the outer side groove of the rotating locking female connector.

[0008] As a preferred technical scheme of the present application, the battery placing bin is provided with slide rails on both sides of the pull clamping frame and is matched with the slide grooves in the inner side of the battery placing bin, the pull basket plate on the outer side of the pull clamping frame is provided with a hinged lock buckle, the main machine body is provided with a lock buckle insertion plate corresponding to the hinged lock buckle, a damp-proof pad is arranged between the battery abutting plate and the inner side wall of the pull clamping frame, and the damp-proof pad is made of sponge material.

[0009] As a preferred technical scheme of the present application, the transmission module in the main machine body is a micro Bluetooth module and is fixed to one side of the magnetic susceptibility data processor, the transmission module is electrically connected with the main machine through a detection connecting key, and the detector is communicated with the magnetic susceptibility data processor through the detection connecting key.

[0010] As a preferred technical scheme of the present application, the temperature compensation module is a patch type temperature sensor and is connected in series with the low-frequency magnetic field generator through a wire.

[0011] As a preferred technical scheme of the present application, the probe positioning frame is a U-shaped nylon frame, the opening width is matched with the diameter of the integrated probe positioning probe, the metal sheet is an iron sheet and is pasted in the middle of the inner side of the probe positioning frame through glue, and the magnet block is a permanent magnet and is embedded in the bottom surface of the main machine body.

[0012] Compared with the prior art, the present application has the following advantages:

[0013] 1. The three groups of support frames are distributed on the main body as the stable support of the middle of the left and right sides and the middle of the back side, the stress is balanced, it is suitable for soft sandy ground, the adjusting support arc feet in each group of support frames are driven by a DC motor, the outer gear of the motor output shaft is meshed with the inner arc rack on the outside of the arc foot, the arc foot is stretched and retracted along the support arc foot movable slot, the arc foot bottom plate and the bottom surface inclined rib increase the sand contact area and friction, the brush strip at the end of the swing rod properly cleans the attached sand particles to avoid sand particles from being stuck in the telescopic structure, the arc feet are retracted to be flush with the main machine when idle, no extra space is occupied, the device reduces the tipping rate on soft sandy ground, the support adjustment is automated and manual operation is not required, the support plate and inclined rib prevent the support from sinking, the brush strip prevents sand from being stuck, the volume is not increased after being stored, the portability is not affected, and it meets the needs of mobile monitoring of multiple measurement points in the wild on the beach;

[0014] 2. The conical sampling end of the positioning integrated probe top end facilitates vertical penetration of the surface sand into the pollution layer, the side wall depth scale line cooperates with the nylon positioning ring to ensure consistent sampling depth each time, the probe is connected to the main machine through a threaded probe connector and a rotating locking female interface, two fluororubber sealing rings in the interface are sealed, the interface sealing cover and the probe silica gel dustproof cover block the invasion of sand particles when idle, the internal temperature compensation module of the main machine collects temperature in real time, corrects the influence of temperature on the low-frequency magnetic field generator, ensures the stability of the magnetic field, reduces the interference error of sand particles on pollution monitoring, temperature compensation reduces the inspection error under different temperature difference environments, and accurate and stable magnetic susceptibility measurement is realized in the pollution scene on the beach;

[0015] 3. The battery storage bin is arranged at the bottom of the main machine, the pull-out clamp is matched with the bin body sliding groove through a sliding rail, the pull-out basket plate can be opened and closed without tools, the battery can be conveniently replaced in the wild, interruption of screening is avoided, the positive magnetic attraction strip of the internal battery abutting plate is adsorbed to the negative magnetic attraction groove of the bin body, the battery is quickly positioned and fixed, the battery storage bin sealing strip at the edge of the bin mouth blocks the gap, the sponge moisture-proof pad is used to isolate sand particles and moisture, battery corrosion is avoided, and the service life is prolonged, the double-mode data synchronous storage and transmission module realizes wireless synchronization and local storage, data loss is avoided when there is no power supply on the beach, and the continuous pollution screening process and complete data are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the present application;

[0017] Figure 2 It is a bottom view of the present application;

[0018] Figure 3 It is a structure split display diagram of the battery storage bin of the present application;

[0019] Figure 4 It is Figure 3 the enlarged view of A;

[0020] Figure 5 The structural display schematic diagram of the support frame, the adjusting support arc foot, the movable inner groove of the support arc foot, the limiting side groove of the support arc foot, the support plate, the inclined edge strip, the inner arc rack, the external gear, the direct current motor, the connecting hinge, the swing rod and the brush strip of the application;

[0021] Figure 6 The structural display schematic diagram of the positioning integrated probe, the depth scale line, the nylon positioning ring, the probe end, the probe connecting line, the silica gel dustproof cover, the probe positioning frame and the metal sheet of the application;

[0022] Figure 7 The structural display schematic diagram of the host computer connecting key, the transmission module, the low-frequency magnetic field generator, the magnetic susceptibility data processor and the temperature compensation module in the host computer body of the application;

[0023] Figure 8 The right side view of the application.

[0024] In the figure: 1, the host computer body; 2, the LCD touch screen; 3, the triangular mounting support plate; 4, the support frame; 5, the fixed clamping frame; 6, the detector; 7, the host computer connecting key; 8, the detection connecting key; 9, the transmission module; 10, the low-frequency magnetic field generator; 11, the magnetic susceptibility data processor; 12, the temperature compensation module; 13, the support frame; 14, the adjusting support arc foot; 15, the movable inner groove of the support arc foot; 16, the limiting side groove of the support arc foot; 17, the support plate; 18, the inclined edge strip; 19, the inner arc rack; 20, the external gear; 21, the direct current motor; 22, the connecting hinge; 23, the swing rod; 24, the brush strip; 25, the battery placing bin; 26, the pulling clamping frame; 27, the pull basket plate; 28, the battery; 29, the hinge lock catch; 30, the lock catch insertion plate; 31, the battery abutting plate; 32, the positive magnetic attraction strip; 33, the negative magnetic attraction groove; 34, the moisture-proof pad; 35, the positioning integrated probe; 36, the conical sampling end; 37, the depth scale line; 38, the nylon positioning ring; 39, the probe end; 40, the probe joint; 41, the probe connecting line; 42, the rotary locking female interface; 43, the interface sealing cover; 44, the silica gel dustproof cover; 45, the probe positioning frame; 46, the metal sheet; 47, the magnet block; 48, the battery placing bin sealing strip. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0026] Please refer to Figures 1-8The application provides a magnetic susceptibility instrument for monitoring heavy metal pollution in a beach environment, which comprises a host body 1, support frames 13, adjustable support arc feet 14, a DC motor 21, a positioning integrated probe 35, a battery placing bin 25 and internal components of the host, the front surface of the host body 1 is embedded with an LCD touch screen 2, one side of the top surface is provided with a triangular mounting plate 3, a support frame 4 is fixed on the triangular mounting plate 3, a fixed clamping frame 5 is installed on the top of the support frame 4, a detector 6 is clamped in the fixed clamping frame 5, there are three groups of support frames 13 distributed in the middle and the rear of the left and right sides of the host body 1, a support arc foot movable inner groove 15 is formed in the inner side of each support frame 13, support arc foot limiting side grooves 16 are formed in the two side walls of the support arc foot movable inner groove 15, the adjustable support arc feet 14 are arc-shaped metal pieces embedded in the support arc foot movable inner grooves 15 of the support frames 13, inner arc racks 19 are welded to the outer side walls of the adjustable support arc feet 14, the DC motor 21 is installed at the inner bottom end of the support arc foot movable inner groove 15 close to one side of the host body 1, the output shaft of the DC motor 21 is sleeved with an external gear 20, the external gear 20 is engaged with the inner arc rack 19, a connecting hinge 22 is installed at the outer bottom of the support frame 13, a swing rod 23 is rotatably connected to the connecting hinge 22, a brush strip 24 is installed at the end of the swing rod 23, the positioning integrated probe 35 has a cylindrical structure, a tapered sampling end 36 is arranged at the top end, depth scale lines 37 are engraved on the side wall, a nylon positioning ring 38 is sleeved on the outer side, a probe connector 40 is arranged at the tail, a probe end 39 is connected between the probe connector 40 and the positioning integrated probe 35, the probe connector 40 is connected to a rotating locking female connector 42 on the side of the host body 1 through a probe connecting line 41, an interface sealing cover 43 is buckled on the outer side of the rotating locking female connector 42, a silica gel dustproof cover 44 is sleeved on the tapered sampling end 36, the battery placing bin 25 is arranged at the bottom of the host body 1, a pull clamping frame 26 is embedded in the inside, a battery abutting plate 31 is installed at the inner left side of the pull clamping frame 26, a pull basket plate 27 is installed at the right side bottom of the battery abutting plate 31, a battery 28 is arranged on the pull basket plate 27, the left side of the battery 28 is clamped with the right side of the battery abutting plate 31, positive magnetic attraction strips 32 are arranged on the front and back sides of the battery abutting plate 31, the positive magnetic attraction strips 32 are matched with negative magnetic attraction grooves 33 arranged at the bin opening position of the battery placing bin 25, a battery placing bin sealing strip 48 is embedded at the bin opening edge of the battery placing bin 25, a host connecting key 7, a transmission module 9, a low-frequency magnetic field generator 10, a magnetic susceptibility data processor 11 and a temperature compensation module 12 are arranged in the inside of the host body 1, the host connecting key 7 is connected with a detection connecting key 8 on the detector 6, the transmission module 9, the low-frequency magnetic field generator 10, the magnetic susceptibility data processor 11 and the temperature compensation module 12 are all arranged in the inside of the host body 1, the low-frequency magnetic field generator 10 is electrically connected with the magnetic susceptibility data processor 11, and the temperature compensation module 12 is connected in series with the magnetic susceptibility data processor 11.

[0027] Specifically: the host body 1 is the core bearing structure, the front LCD touch screen 2 is used for operation and data display, the top triangular mounting plate 3 is fixed through the support frame 4 and the detector 6, forming a stable assembly relationship of the plate, the support frame and the detector, ensuring that the detector 6 accurately receives the magnetic field signal. Three groups of support frames 13 are stably supported on the left and right middle and rear middle, and the stress is most balanced. The support arc foot movable inner groove 15 of each support frame 13 provides an extension channel for the adjustment support arc foot 14, and the support arc foot limiting side groove 16 limits the offset direction of the adjustment support arc foot 14. The DC motor 21 is fixed inside the bottom of the support arc foot movable inner groove 15, and the outer gear 20 of its output shaft is engaged with the inner arc rack 19 outside the adjustment support arc foot 14. Starting the DC motor 21, the outer gear 20 drives the inner arc rack 19 to transmit, so that the adjustment support arc foot 14 is extended to be lower than the host bottom to realize support when it is extended in the support arc foot movable inner groove 15, and it is flush with the host when it is retracted, without occupying extra space. The connecting hinge 22 on the outside bottom of the support frame 13 makes the swing rod 23 rotatable, and the brush strip 24 at the end of the swing rod 23 is attached to the surface of the adjustment support arc foot 14 to automatically clean the attached sand particles when it is extended, avoiding the sand particles from being stuck in the extension structure. And it can have a positioning and sand prevention measurement system: the positioning integrated probe 35 is a cylindrical structure, the top tapered sampling end 36 is convenient for vertical insertion into the sand beach; the side wall depth scale line 37 directly shows the insertion depth, and the outside nylon positioning ring 38 can be fixed at the target depth through the top wire, ensuring that the sampling depth is consistent each time. The probe tail is connected to the probe joint 40 through the probe end 39, the probe connecting line 41 connects the probe joint 40 with the rotating locking female interface 42 on the side of the host, the inner thread in the interface cooperates with the outer thread of the probe joint 40, and the interface sealing cover 43 and the silica gel dustproof cover 44 respectively block the interface and the probe top end when they are idle, blocking the sand particles from entering. There is a battery and an internal circuit system: the battery storage bin 25 is arranged at the bottom of the host body 1, the pull-out clamp 26 is adapted to the bin body sliding groove through the sliding rail, and the pull-out basket plate 27 can be opened and closed without tools; the positive magnetic attraction strip 32 of the internal battery abutting plate 31 is attracted to the negative magnetic attraction groove 33 of the battery storage bin 25, realizing quick positioning and fixing of the battery 28, and the battery storage bin sealing strip 48 blocks the bin opening gap to prevent sand and moisture. Inside the host: the host connection key 7 is communicated with the detection connection key 8 of the detector 6 to transmit the detection signal; the double-mode data synchronous storage and transmission module 9 realizes wireless synchronization to the mobile phone and local storage of the host, avoiding data loss. The temperature compensation module 12 collects the environmental temperature in real time, feeds back to the magnetic susceptibility data processor 11 to adjust the magnetic field frequency, ensuring the accuracy of the pollutant magnetic signal monitoring. The overall design solves the problems of support, sand prevention, endurance and data storage of traditional equipment in beach pollution screening, improves the screening efficiency and accuracy, and the low-frequency magnetic field generator 10 generates a magnetic field suitable for beach sand particles, the magnetic susceptibility data processor 11 converts the signal, the temperature compensation module 12 real-time corrects the influence of temperature on the magnetic field, and the transmission module 9 ensures that the data is not lost.Make it possible to solve the problem of folding support instability, sand interference measurement, interface sand failure, and the triangular distribution of the telescopic support system, which reduces the dumping rate of the device on the soft ground of the beach, and the support adjustment is automated, without manual operation; The double sealing of the probe and the interface, the automatic sand cleaning of the support arc foot, reduces the interference error of sand on the measurement; The pull-out type sealed battery compartment realizes tool-free opening and closing, reduces the corrosion rate of the battery, the internal components of the main machine work together, the measurement accuracy is improved, and the data reliability is improved in the sand beach temperature difference environment.

[0028] The nylon positioning ring 38 outside the positioning integrated probe 35 is a circular ring, the inner diameter is matched with the outer diameter of the positioning integrated probe 35, the outside of the nylon positioning ring 38 is provided with a top screw, the bottom surface of the main machine body 1 is provided with a probe positioning frame 45, the inside of the probe positioning frame 45 is attached to a metal sheet 46, the main machine body 1 is provided with a magnet block 47 corresponding to the probe positioning frame 45, and the metal sheet 46 and the magnet block 47 are adsorbed;

[0029] Specifically: the inner diameter of the nylon positioning ring 38 outside the positioning integrated probe 35 is completely matched with the outer diameter of the probe, the top screw outside the positioning ring is tightened, and it can be fixed at any position of the depth scale line 37. When inserted into the beach, the bottom of the positioning ring is in contact with the surface of the beach, which can ensure that the probe insertion depth is consistent with the preset value, and avoid depth deviation of different measurement points. The probe positioning frame 45 below the bottom surface of the main machine body 1 is a U-shaped structure, the opening width is matched with the diameter of the probe, the metal sheet 46 inside the positioning frame is adsorbed with the magnet block 47 on the bottom surface of the main machine, and the magnetic attraction is formed. When idle, the probe is clamped into the positioning frame, which can prevent the probe from being damaged by collision, and does not occupy additional storage space, so as to solve the problem of inaccurate depth of traditional probe and idle damage.

[0030] The bottom end of the adjusting support arc foot 14 is welded with a support plate 17, the support plate 17 is a rectangular metal plate, the bottom surface is uniformly distributed with inclined ribs 18, and the inclined ribs 18 are triangular protrusions. The brush strip 24 is made of nylon and is attached to the surface of the adjusting support arc foot 14;

[0031] Specifically: the support plate 17 at the bottom end of the adjusting support arc foot 14 is a rectangular metal plate, which increases the contact area with the beach and avoids sinking into the sand when supporting; the triangular inclined ribs 18 on the bottom surface of the support plate 17 increase the friction force, which prevents the device from sliding horizontally due to spraying or wind blowing. The connecting hinge 22 is rotated synchronously with the extension and retraction of the adjusting support arc foot 14, and the nylon brush strip 24 at the end is attached to the surface of the arc foot. During the extension and retraction process, the attached sand particles are automatically brushed off, avoiding the sand particles entering the support arc foot movable groove 15 and the support arc foot limiting side groove 16, preventing the extension and retraction structure from being stuck, and the automatic sand cleaning function reduces the sticking failure rate of the support arc foot, prolonging the service life of the support structure.

[0032] The rotating locking female interface 42 is a cylindrical interface, the inner side of which is provided with internal threads, and is matched with the external threads of the probe joint 40 on the outer side of the positioning integrated probe 35. Two fluororubber sealing rings are embedded in the rotating locking female interface 42. The interface sealing cover 43 is made of rubber material, and the inner side is provided with a protrusion which is clamped with the recess on the outer side of the rotating locking female interface 42.

[0033] Specifically, the rotating locking female interface 42 is provided with internal threads on the inner side, which is matched with the external threads of the probe joint 40, so as to avoid loosening of the interface. The two fluororubber sealing rings in the interface are compressed when locked, forming a sand-proof structure of thread locking and double sealing, which blocks fine sand from entering the gap of the interface. The interface sealing cover 43 is made of rubber material, and the inner side protrusion is clamped with the recess on the outer side of the rotating locking female interface 42. When idle, the sealing cover is buckled, further isolating sand particles and moisture, and ensuring that the inside of the interface is dry and clean.

[0034] The pull-out clamping frame 26 of the battery storage bin 25 is provided with slide rails on both sides and is matched with the slide groove in the inner side of the battery storage bin 25. The pull-out basket plate 27 on the outer side of the pull-out clamping frame 26 is provided with a hinged lock buckle 29. The main body 1 is provided with a lock buckle insertion plate 30 corresponding to the hinged lock buckle 29. The battery abutting plate 31 is provided with a moisture-proof pad 34 between the inner side wall of the pull-out clamping frame 26. The moisture-proof pad 34 is made of sponge material.

[0035] Specifically, the pull-out clamping frame 26 of the battery storage bin 25 is matched with the bin body slide groove through the slide rails on both sides. The pull-out basket plate 27 can be pulled out to realize the pull-out type opening and closing, without the need for some tools such as screwdrivers. The battery storage bin sealing strip 48 at the edge of the bin opening is made of silica gel material. When the pull-out clamping frame 26 is pushed in, the sealing strip is compressed to block the gap between the bin opening and the clamping frame, preventing sand particles from entering. The battery abutting plate 31 in the pull-out clamping frame 26 is attracted to the positive electrode of the battery 28 through the positive magnetic attraction strip 32, and at the same time, the negative electrode of the battery is attached to the negative magnetic attraction groove 33 of the battery storage bin 25, realizing the quick positioning and electrical connection of the battery. The sponge moisture-proof pad 34 between the battery abutting plate 31 and the clamping frame side wall absorbs the moisture in the bin, preventing the battery from being corroded by moisture.

[0036] The transmission module 9 in the main body 1 is a micro Bluetooth module and is fixed on one side of the magnetic susceptibility data processor 11. The transmission module 9 is electrically connected with the main body connection key 7. The detector 6 is in communication with the magnetic susceptibility data processor 11 through the detection connection key 8.

[0037] Specifically, the transmission module 9 in the main body is a micro Bluetooth module and is electrically connected with the main body connection key 7, which can receive the measurement data transmitted by the magnetic susceptibility data processor 11 in real time. On the one hand, the data is wirelessly synchronized to the mobile phone and tablet through Bluetooth, and on the other hand, it is stored in the storage chip built in the main body. The detector 6 is directly communicated with the magnetic susceptibility data processor 11 through the detection connection key 8, which ensures that the magnetic field signal is transmitted to the processor without delay, avoiding errors caused by signal attenuation.

[0038] The temperature compensation module 12 is a patch temperature sensor and is connected in series with the low-frequency magnetic field generator 10 through a wire;

[0039] Specifically, the temperature compensation module 12 is a patch temperature sensor, which is connected in series with the low-frequency magnetic field generator 10 through a wire, and collects the temperature inside the host and the beach environment in real time. When the temperature changes, the temperature compensation module 12 feeds back the temperature signal to the magnetic susceptibility data processor 11, and the processor adjusts the output frequency of the low-frequency magnetic field generator 10 according to a preset algorithm to ensure that the magnetic field strength is stable and is not affected by temperature.

[0040] The probe positioning frame 45 is a U-shaped nylon frame, the opening width of which is adapted to the diameter of the positioning integrated probe 35. The metal sheet 46 is an iron sheet, which is pasted in the middle of the inner side of the probe positioning frame 45 by glue. The magnet block 47 is a permanent magnet, which is embedded in a preset groove in the bottom surface of the host body 1.

[0041] Specifically, the probe positioning frame 45 is a U-shaped nylon frame, which is lightweight and impact-resistant, and the opening width of which is completely adapted to the diameter of the positioning integrated probe 35 to ensure that the probe does not shake after being clamped. The iron sheet 46 in the middle of the inner side of the positioning frame is fixed by glue, and is adsorbed and stably fixed with the permanent magnet block 47 in the preset groove in the bottom surface of the host to prevent the probe from falling off even if the device is tilted. The probe positioning frame 45 and the three sets of supporting frames 13 are distributed staggered to avoid interference with the positioning frame when the supporting frame is adjusted, and do not affect the opening and closing operation of the battery placement compartment 25.

[0042] In the application, the host body 1 is the core bearing structure, the front LCD touch screen 2 is used for operation and data display, the top triangular mounting plate 3 is fixed with the detector 6 through the support frame 4, and the stable assembly relationship of the plate, the support frame and the detector is formed, so that the detector 6 can accurately receive the magnetic field signal. The three groups of support frames 13 are stably supported at the middle of the left and right sides and the middle of the rear side, and the stress is most balanced in the geometric structure. The support arc foot movable inner groove 15 of each group of support frames 13 provides an extension channel for the adjusting support arc foot 14, and the support arc foot limiting side groove 16 limits the deviation direction of the adjusting support arc foot 14. The direct current motor 21 is fixed at the inner bottom end of the support arc foot movable inner groove 15, the outer gear 20 of the output shaft of the direct current motor 21 is engaged with the inner arc gear rack 19 outside the adjusting support arc foot 14, the direct current motor 21 is started, the outer gear 20 drives the inner arc gear rack 19 to transmit, so that the adjusting support arc foot 14 is extended to be below the host bottom surface to realize support when the adjusting support arc foot 14 is extended and retracted in the support arc foot movable inner groove 15, and the adjusting support arc foot 14 is flush with the host when the adjusting support arc foot 14 is retracted, so that no extra space is occupied. The connecting hinge 22 at the bottom outside of the support frame 13 enables the swing rod 23 to rotate, the brush strip 24 at the end of the swing rod 23 is attached to the surface of the adjusting support arc foot 14 to clean the attached sand particles and avoid the sand particles from being stuck in the extension structure. And the positioning and sand prevention measurement system: the positioning integrated probe 35 is in a cylindrical structure, the top tapered sampling end 36 is convenient for being vertically inserted into the sand beach, the side wall depth scale line 37 directly displays the insertion depth, and the outside nylon positioning ring 38 can be fixed at the target depth through the top wire, so that the sampling depth is consistent every time. The probe tail is connected with the probe joint 40 through the probe end head 39, the probe connecting line 41 connects the probe joint 40 with the rotating locking female interface 42 on the side of the host, the inner thread in the interface is matched with the outer thread of the probe joint 40, the interface sealing cover 43 and the silica gel dustproof cover 44 respectively block the interface and the probe top end when they are idle, and the sand particles are blocked from invading. The battery and the internal circuit system: the battery placing bin 25 is arranged at the bottom of the host body 1, the pull-out clamp 26 is matched with the bin body sliding groove through the sliding rail, and the pull-out basket plate 27 can be opened and closed by pulling without tools; the positive magnetic attraction strip 32 of the internal battery abutting plate 31 is attracted to the negative magnetic attraction groove 33 of the battery placing bin 25, so that the battery 28 is quickly positioned and fixed, the battery placing bin sealing strip 48 blocks the bin opening gap to prevent sand and moisture. The host interior: the host connecting key 7 is communicated with the detection connecting key 8 of the detector 6 to transmit the detection signal; the double-mode data module avoids data loss, the low-frequency magnetic field generator 10 generates a magnetic field suitable for sand particles, the magnetic susceptibility data processor 11 converts the signal, the temperature compensation module 12 real-time corrects the influence of temperature on the magnetic field, and the transmission module 9 ensures that the data is not lost.Make it possible to solve the problems of folding support instability, sand interference measurement, and interface sand failure well, and the triangular distribution of the telescopic support system reduces the dumping rate of the device on the soft ground of the beach, the support adjustment is automated, and manual operation is not required; The double sealing of the probe and the interface, the automatic sand cleaning of the support arc foot, and the interference error of the sand on the measurement are reduced; The pull-out type sealed battery compartment realizes tool-free opening and closing, the battery corrosion rate is reduced, the internal components of the main machine work cooperatively, the measurement accuracy is improved, and the data reliability is improved.

[0043] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments, comprising a main unit (1), a support frame (13), adjustable support arc feet (14), a DC motor (21), an integrated positioning probe (35), a battery storage compartment (25), and internal components of the main unit, characterized in that: The main body (1) has an LCD touch screen (2) embedded on the front, and a triangular mounting plate (3) is provided on one side of the top surface. A support frame (4) is fixed on the triangular mounting plate (3). A fixed card holder (5) is installed on the top of the support frame (4). A card holder (6) is installed inside the fixed card holder (5). The support frame (13) consists of three sets distributed on the middle of the left and right sides and the middle of the rear side of the main body (1). Each set of the support frame (13) has a support arc foot movable inner groove (15) on the inner side. The two side walls of the support arc foot movable inner groove (15) are provided with support arc foot limiting side grooves (16). The adjustable support arc foot (14) is an arc-shaped metal part, which is embedded in the support arc foot movable inner groove (15) of the support frame (13). The adjustable support arc foot (14) is located outside the support arc foot. The sidewall is welded with an inner arc rack (19). The DC motor (21) is installed at the bottom of the inner groove (15) of the support arc foot, close to the main body (1). Its output shaft is fitted with an external gear (20). The external gear (20) meshes with the inner arc rack (19). A connecting hinge (22) is installed on the bottom of the outer side of the support frame (13). A swing arm (23) is rotatably connected to the connecting hinge (22). A brush strip (24) is installed at the end of the swing arm (23). The positioning integrated probe (35) is a cylindrical structure with a cone-shaped sampling end (36) at the top. Depth scale lines (37) are engraved on the sidewall. A nylon positioning ring (38) is fitted on the outer side. A probe connector (40) is provided at the tail. The probe connector (40) is connected to the positioning integrated probe. The probe tip (39) is connected between the heads (35). The probe connector (40) is connected to the rotating locking nut interface (42) on the side of the main body (1) through the probe connecting line (41). The rotating locking nut interface (42) is fastened with the interface sealing cover (43) on the outside. The cone-shaped sampling end (36) is covered with a silicone dust cover (44). The battery placement compartment (25) is located at the bottom of the main body (1) and is fitted with a pull-out card holder (26). The battery abutment plate (31) is installed on the left side of the pull-out card holder (26). The pull-out board (27) is installed on the bottom right side of the battery abutment plate (31). The battery (28) is placed on the pull-out board (27). The left side of the battery (28) is engaged with the right side of the battery abutment plate (31). The battery abutment plate (31) is equipped with positive magnetic strips (32) on the front and rear sides. The positive magnetic strips (32) are adapted to the negative magnetic grooves (33) set at the opening of the battery placement compartment (25). The edge of the opening of the battery placement compartment (25) is embedded with a battery placement compartment sealing strip (48). The main body (1) is equipped with a main body connection key (7), a transmission module (9), a low-frequency magnetic field generator (10), a magnetic susceptibility data processor (11), and a temperature compensation module (12). The main body connection key (7) is connected to the detection connection key (8) on the detector (6). The transmission module (9), the low-frequency magnetic field generator (10), the magnetic susceptibility data processor (11), and the temperature compensation module (12) are all set inside the main body (1).The low-frequency magnetic field generator (10) is electrically connected to the magnetic susceptibility data processor (11), and the temperature compensation module (12) is connected in series with the magnetic susceptibility data processor (11).

2. The magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The nylon positioning ring (38) on the outside of the integrated positioning probe (35) is circular, and its inner diameter is adapted to the outer diameter of the integrated positioning probe (35). The nylon positioning ring (38) is provided with a top screw on the outside. The probe positioning frame (45) is provided below the bottom surface of the main body (1). A metal sheet (46) is attached to the inside of the probe positioning frame (45). A magnet (47) is installed on the main body (1) corresponding to the probe positioning frame (45). The metal sheet (46) and the magnet (47) are attracted to each other.

3. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The bottom end of the adjustable support arc foot (14) is welded with a support plate (17). The support plate (17) is a rectangular metal plate with oblique ribs (18) evenly distributed on the bottom surface. The oblique ribs (18) are triangular protrusions. The brush strip (24) is made of nylon and is attached to the surface of the adjustable support arc foot (14).

4. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The rotary locking female interface (42) is a cylindrical interface with an internal thread on the inside, which is adapted to the external thread on the probe connector (40) of the positioning integrated probe (35). The rotary locking female interface (42) is embedded with two fluororubber sealing rings. The interface sealing cover (43) is made of rubber with a protrusion on the inside, which engages with the groove on the outside of the rotary locking female interface (42).

5. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The battery storage compartment (25) has a pull-out card holder (26) with slide rails on both sides, which are adapted to the inner slide groove of the battery storage compartment (25). The pull-out board (27) on the outer side of the pull-out card holder (26) is provided with a hinged latch (29). The main body (1) is equipped with a latch plate (30) corresponding to the hinged latch (29). A moisture-proof pad (34) is placed between the battery abutment plate (31) and the inner wall of the pull-out card holder (26). The moisture-proof pad (34) is made of sponge material.

6. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The transmission module (9) inside the host body (1) is a miniature Bluetooth module and is fixed on one side of the magnetic susceptibility data processor (11). The transmission module (9) is electrically connected to the host connection key (7), and the detector (6) is connected to the magnetic susceptibility data processor (11) through the detection connection key (8).

7. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 1, characterized in that: The temperature compensation module (12) is a patch-type temperature sensor and is connected in series with the low-frequency magnetic field generator (10) via a wire.

8. A magnetic susceptibility meter for monitoring heavy metal pollution in beach environments according to claim 2, characterized in that: The probe positioning frame (45) is a U-shaped nylon frame with an opening width that matches the diameter of the integrated positioning probe (35). The metal sheet (46) is an iron sheet that is glued to the inner middle of the probe positioning frame (45). The magnet block (47) is a permanent magnet that is embedded in a preset groove on the bottom surface of the main body (1).

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