91 results about "Magnetic field effect" patented technology

The utility model provides a magnetic field fresh-keeping container and a refrigerator. The magnetic field fresh-keeping container comprises a barrel body which is provided with a magnetic fresh-keeping space; the magnetic field generation module is arranged on one side wall of the barrel body so as to generate a magnetic field in the magnetic fresh-keeping space, and the magnetic field generation module comprises a plurality of permanent magnet pieces; and the positioning structure is provided with a plurality of mounting areas, and the permanent magnet sheets are in one-to-one correspondence with the mounting areas so as to position the relative positions of the plurality of permanent magnet sheets. The multiple permanent magnet pieces generate a magnetic field in the magnetic fresh-keeping space, so that the same permanent magnet pieces generate the magnetic field at different positions in the magnetic fresh-keeping space, the uniformity of the magnetic field in the magnetic fresh-keeping space is improved, and the fresh-keeping effect is improved. The multiple installation areas of the positioning structure can position the relative positions of the multiple permanent magnet pieces, installation work of the multiple permanent magnet pieces is facilitated, the distance between the multiple permanent magnet pieces after installation meets the preset requirement, and therefore the good magnetic field effect is guaranteed.

The invention relates to the technical field of burn and scald treatment, in particular to an intelligent hydrogel dressing for targeted regulation and control of Mongolian medicine release. The dressing comprises a core-shell microsphere drug loading system used for realizing physical segmentation of a functional area; the dual-release system is used for realizing surface adsorption of quick-release drug nanoparticles and internal wrapping of sustained-release microspheres; a hydrogel matrix for forming a nanofiber network; and the magnetic control regulator is magnetic nanoparticles dispersed in the hydrogel matrix, and regulates the aperture of the hydrogel network through the action of an external magnetic field. According to the intelligent hydrogel dressing for targeted regulation and control of Mongolian medicine release, the Mongolian medicine compound intelligent hydrogel dressing is developed on the basis of a TRIZ innovative method; through a core-shell microsphere drug loading system and a dual release design, high drug loading capacity and accurate drug release control are synchronously realized.

The invention relates to the technical field of water treatment, in particular to active water treatment equipment based on a magnetofluid field effect. The device comprises a water treatment assembly for temporarily storing to-be-treated water and performing active treatment on a water body by using an electric field and / or a magnetic field, a water conveying assembly mounted and connected to the water inlet end and the water outlet end of the water treatment assembly and used for continuously conveying water flow into the water treatment assembly, and a magnetic field generating assembly mounted on the outer side of the water treatment assembly and used for generating magnetic field generated by the water treatment assembly. The magnetic field generating assembly is used for generating a magnetic field effect to act on water in the water treatment assembly, and the electromagnetic field control assembly is connected with the water treatment assembly and the magnetic field generating assembly through wires and used for controlling the water treatment assembly and the magnetic field generating assembly to generate an electric field and / or a magnetic field effect and treating the water. The water storage device is surrounded by a plurality of paired electromagnetic field generators from top to bottom, after the electromagnetic field generators are electrified to generate a magnetic field, the magnetic field action is performed on water flowing through the water storage device, and the treated water flows out through the water outlet electricity-proof wall water inlet pipe.

The utility model relates to the technical field of suspended moxibustion, and discloses a column suspended moxibustion device which comprises a main body, the top of the main body is sleeved with a supporting plate in a sliding mode, a round rod is fixedly installed at the top of the supporting plate, a cylinder is fixedly installed on the outer wall of the round rod, the inner wall of the cylinder is sleeved with a round rod in a sliding mode, and a spring is fixedly installed on the outer wall of the round rod. A fixing plate is fixedly installed on the outer wall of the side, away from the spring, of the round rod, and the inner wall of the supporting plate is slidably sleeved with a supporting rod. According to the column suspended moxibustion device, the supporting plate is placed on the inner wall of the main body, the magnetic field effect of the magnets and the magnetic interaction generated by ferromagnetic substances of the iron sheets are utilized, so that when the iron sheets are close to the magnets, generated different magnetic poles attract each other, and then the iron sheets drive the tortoise plastron to be sealed with the bottom of the main body; moxa sticks are ignited and placed on the inner wall of the main body, and the outer walls of the supporting rods are rubbed through the supporting plates, so that the supporting rods drive the moxa sticks to achieve vertical adjustment through friction for temperature control.

The utility model relates to hydrogen fluoride production technical field discloses a pipeline descaling system for hydrogen fluoride production, include: evaporative cooling device has the accommodation cavity, fills with domestic water in the accommodation cavity, the cooling pipe inside fills with freon, first pipeline sets up the outside of evaporative cooling device, the import of first pipeline communicates with the below outside end surface of evaporative cooling device, and the export of first pipeline communicates with the outside end surface of the above of evaporative cooling device, first pipeline circulates domestic water through the drive part, and the parallelly connected setting of permanent magnet descaling device is in first pipeline, the utility model discloses through setting permanent magnet descaling device, utilizes the magnetic field effect, changes the scale layer crystallization form, makes it difficult to adhere to the pipe wall, the freon in cooling pipe can more efficiently carry out the cooling at this moment, and the heat exchange effect is high.

This invention provides an ultrasonic-gradient magnetic field synergistic treatment device and method for edible liquids, relating to the field of edible liquid processing technology. The device includes an ultrasonic treatment unit, a gradient magnetic field treatment unit, and a closed-loop enhanced circulation unit connecting the two. The ultrasonic treatment unit is used to cavitation the liquid; the gradient magnetic field treatment unit includes a magnetization channel and a magnetic field generating component, the magnetic field generating component being used to form a continuously varying magnetic field distribution along the liquid flow path within the magnetization channel; the closed-loop enhanced circulation unit is used to create a directional circulating flow of the liquid between the ultrasonic treatment unit and the gradient magnetic field treatment unit, ensuring that the liquid passes through the ultrasonic action area at least twice within one circulation cycle, thereby allowing the liquid to alternately receive ultrasonic and gradient magnetic field effects during circulation, forming a nonlinear cumulative synergistic treatment effect. This invention helps improve the uniformity and processing effect of edible liquids.

The invention discloses a light collimator based on magnetic particles and low-melting-point glass and a manufacturing method thereof. The manufacturing method comprises the following steps: uniformly mixing a low-melting-point glass raw material and the magnetic particles; the melting point of the low-melting-point glass is 300 DEG C to 500 DEG C; placing the obtained mixture in a heating device, and controlling the heating temperature to be within the melting point range of the low-melting-point glass raw material and to be lower than the Curie temperature of the magnetic particles; then adding a dispersing agent; pouring the uniformly mixed solution into a mold, and placing the mold in a uniform magnetic field with an unchanged magnetic field direction, so that the magnetic particles are arranged into a plurality of chain-shaped aggregates parallel to the magnetic field direction under the action of the magnetic field, and the chain-shaped aggregates are parallel to one another; and after complete cooling and solidification, the magnetic field effect is removed, and the optical collimator based on the magnetic particles is manufactured. Therefore, the technical problems that an existing optical collimator is poor in high temperature resistance and corrosion resistance and limited in light-transmitting wave band are solved.

The utility model relates to the technical field of simple harmonic motion analysis under the action of a magnetic field, in particular to a simple harmonic motion analysis device and equipment based on a torsional pendulum under a magnetic field condition, and the device comprises a magnetic field torsional pendulum mechanism, a data acquisition mechanism and a control mechanism, the magnetic field torsional pendulum mechanism comprises a torsional pendulum assembly and a magnetic field generation module, and a metal ball in the torsional pendulum assembly is located in a magnetic field generated by the magnetic field generation module. The data acquisition mechanism comprises an encoder and a photoelectric door, and the encoder is mounted on a rotating shaft of the metal ball and is in contact with the metal ball; the photoelectric door is arranged on a motion path of the metal ball, and when the encoder synchronously rotates along with the metal ball, the edge of a coded disc of the encoder passes through a detection area of the photoelectric door; and the control mechanism is connected with the encoder and the photoelectric door. According to the utility model, automatic data acquisition and processing can be realized, and the motion state of the pendulum ball can be accurately monitored in real time.

The utility model provides a magnetic fresh-keeping container and refrigeration equipment. The magnetic fresh-keeping container comprises a storage device provided with a storage space; the at least one magnetic field device is pivotally connected with the storage device and used for generating a magnetic field in the storage space, and the magnetic field device is provided with a first position covering at least part of the storage space in the first direction and a second position covering at least part of the storage space in the second direction; the rotating shaft rotates relative to the storage device and is switched between a first position and a second position, and the first direction is perpendicular to the second direction. The magnetic field device can generate a magnetic field in the storage space at the first position and the second position. Namely, the magnetic field device can enable the food materials in the storage space to be subjected to the magnetic field effect in the low-temperature storage process at the first position and the second position, the magnetic field fresh-keeping effect is achieved, the fresh-keeping effect of the food materials is improved, and more flexible magnetic field configuration can be provided.

The invention belongs to the technical field of ice resistance of wind power generation equipment, and particularly relates to a magnetorheological fluid self-adaptive ice-resistant wind turbine blade and a control method.The wind turbine blade comprises a shell, and a girder, rib plates connected with the girder, core materials spaced from the rib plates and electromagnets connected with the rib plates are installed in the shell; wherein a cavity area is formed in the front edge area of the shell, an MRF interlayer and a skin which are attached to each other are installed in the cavity area, and a PLC used for controlling the electromagnet is installed at the root of the shell; when the electromagnet is started, the MRF interlayer is solidified through the magnetic field effect of the electromagnet so as to extrude the ice layer attached to the outer portion, otherwise, the electromagnet is dormant, the MRF interlayer is made to recover to be in the liquid state, and therefore the pneumatic form of the blade is maintained after deicing. The control method comprises steps 1-7. The transient curing characteristic of the magnetorheological fluid under the action of a magnetic field is utilized, the surface morphology of the blade is dynamically regulated and controlled, the continuity of an ice layer is destroyed, and meanwhile pneumatic smoothness is recovered in an ice-free state.

The utility model discloses a magnet device for magnetron sputtering coating, which belongs to the technical field of magnetron sputtering coating, and comprises a back plate, a magnetic bar base and magnetic bars, the magnetic bar base is connected onto the back plate through a plurality of adjusting bolts, the magnetic bar base is provided with three horizontal clamping grooves for correspondingly placing the magnetic bars, the magnetic bars comprise square tubes, and the square tubes are arranged in the clamping grooves. The magnets are arranged in the square tubes, and the magnetic poles of the magnets arranged in the adjacent square tubes face opposite directions. A fixing position is provided through the effect of the back plate, the generated peripheral magnetic field intensity is changed by adjusting the distance between the magnetic rod base and the back plate, the collision ionization effect is changed, the thickness of the film layer is adjusted accordingly, and the production application range is wide; the magnet device adopts the stainless steel square tube to package the magnet, effectively prevents the magnet assembly from being damped and corroded, ensures the position stability of the magnet, avoids the influence of position change on the magnetic field effect, and improves the stability and reliability of the device; and the magnet is convenient to disassemble and assemble and can be reused, so that the production cost is reduced.

The invention relates to the technical field of loader electronic scales, in particular to a loader electronic scale calibration device which comprises a vehicle body, a loading frame is arranged at the front end of the vehicle body, loading hydraulic rods for controlling a loading hopper to rotate and lift are arranged on the loading frame, and a communicating pipe is arranged between the loading hydraulic rods. A weighing mechanism used for weighing the loading vehicle and the weight of goods unloaded from the bucket is arranged in the position, close to the communicating pipe, of the wheel damping and loading frame of the vehicle body, and a calibration adjusting mechanism used for calibrating and adjusting the electronic scale is arranged in a cab of the vehicle body. The adjusting telescopic rod pushes the limiting rod to start to move, the limiting rod does not extrude the sliding block any more, the adjusting magnetic ring installed on the electric brush ring at the lower end of the sliding block drives the electric brush ring to move under the magnetic field effect of the calibration magnetic ring, after the calibration magnetic ring and the adjusting magnetic ring are attracted and attached, data calibration returns to zero, and therefore a worker can calibrate the electronic scale more conveniently.

The utility model provides machine tool constant pressure equipment, and belongs to the technical field of machine tool constant pressure. Comprising a bottom plate; the buffer area is arranged on the bottom plate; the pump body is arranged on the buffer area; the connecting piece is arranged at the output end of the pump body in a communicating mode. Through the arrangement of the connecting piece, when pump body pulsation enables cooling liquid pressure and flow velocity fluctuation to be transmitted to the connecting piece, the inner layer can effectively absorb initial pressure impact and high-frequency vibration, a first buffering defense line is provided, when the impact is transmitted to the middle layer, the flexible damping fin starts to deform, vibration energy is further absorbed, and the vibration energy is further absorbed. Meanwhile, the magnetic field intensity is changed by the electromagnetic coil, so that the magnetorheological material is gradually hardened under the action of an initial magnetic field, vibration energy is effectively absorbed and dissipated, the influence of pulsation on the pressure of cooling liquid in the conveying pipe is reduced, and pipeline damage is reduced.

The invention discloses a thyristor branch current detection circuit based on a magnetism gathering effect. The thyristor branch current detection circuit comprises a power supply module, a magnetism gathering device, a magnetic field conversion device, a voltage dividing module, an integrated operational amplifier module and a microcontroller, the magnetism gathering device is used for directionally gathering an annular magnetic field generated by the thyristor branch current; the magnetic field conversion device is mounted on the magnetic gathering device and is used for converting the gathered magnetic field into first voltage; the voltage division module is connected with the power supply module; the integrated operational amplifier module is respectively connected with the voltage dividing module and the magnetic field conversion device; and the microcontroller is connected with the integrated operational amplifier module. According to the invention, the magnetic gathering device is coupled with the wire through the magnetic field, and the magnetic field conversion device is coupled with the magnetic gathering device through the magnetic field without any electrical connection, so that the problem of branch open circuit caused by detection is fundamentally avoided, the open circuit risk existing in the traditional technology is solved, and the working state of the system can be judged by monitoring the change of the reference voltage under the static working condition.

In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.

The novel right-angle safety valve comprises a safety valve body, an exhaust pipe is integrally formed on the right side of the safety valve body, a movable plate is connected to the inner wall of the safety valve body in a sliding mode, a sealing seat is installed at the bottom of the movable plate, and the sealing seat is located on the left side of the exhaust pipe. A bearing plate is slidably connected to the inner wall of the safety valve body. According to the safety valve, the first magnetic block and the second magnetic block are arranged, the same magnetic pole between the first magnetic block and the second magnetic block is used for achieving pressure on the sealing base, the sealing base blocks the exhaust pipe, when air pressure in the safety valve body is too large, the pressure overcomes the magnetic field effect, the sealing base can be jacked up, the exhaust pipe is exhausted, and then automatic pressure relief is achieved; and meanwhile, the height of the first magnetic block can be changed through cooperation of the rotating shaft and the threaded sleeve, then the pressure on the sealing base is changed, the pressure sensor can display the pressure on the displayer in real time in the safety valve operation and pressure adjusting process, and a user can check the pressure conveniently.

The application provides a cementing plug releasing device, method and system, which comprises a main body, a releasing cavity in the main body, a releasing opening on one side of the releasing cavity, a plug body arranged in the releasing cavity and having magnetism, and a pointer assembly arranged on the main body and having a freely rotating pointer, which can be limited from freely rotating by the magnetic field of the plug body in the releasing cavity. According to the technical scheme of the application, the plug releasing can be quickly, accurately and intuitively judged by the change of the posture of the pointer based on the magnetic field effect, and correct decisions can be made on the basis of accurate judgment, so as to ensure the safety of cementing construction and the quality of cementing.

The utility model discloses an electrified coil magnetic field effect demonstration device which comprises a wire duct, a cross beam, an upper buckle, a lower buckle, a footstand, a connecting plate, a threading hole, a binding post clamping groove, a binding post and a coil. Compared with the prior art, the device disclosed by the utility model is lower in overall cost and simpler and more convenient in production process, and achieves the effects of small size, light weight, convenience in carrying and simplicity in operation on the premise of ensuring the experiment effect. After the device is electrified, the magnetic needle base and the magnetic needle can be arranged outside and inside the connecting plate and can move freely, so that magnetic effect differences of different positions of the electrified coil can be observed conveniently, and teaching and learning are facilitated.

The invention discloses a collateral dredging chair which comprises a seat plate and a leaning frame, a square groove is formed in the middle of the seat plate, a detachable metal support is arranged at the top of the leaning frame, threading holes which are evenly distributed are formed in the leaning frame, the threading holes are used for threading and binding a cloth pad, jade can be contained in the cloth pad, jade can be contained in the square groove, and jade can be bound to the metal support. The metal support comprises a fastener at the bottom, and the fastener is fastened to the top of the leaning frame. The device has the advantages that the magnetic field effect of jade and resonance of light wave vibration frequency are used for jointly improving energy of a human body, and the purposes of dredging back meridian points and meridian points in a front pulsator area, healing the body, repairing injuries and recovering health are achieved.

The invention relates to a device and a method for magnetic field assisted photochemical mechanical polishing of a semiconductor wafer. Comprising a portal frame, an ultraviolet irradiation unit, a magnetic applying wafer spindle unit, a workbench, a liquid storage tank, a finishing wheel unit and a magnetic applying polishing disc unit. And the wafer is arranged on the magnetic applying wafer main shaft unit and is adsorbed on the connecting flange through vacuum. Ultraviolet light penetrates through the magnetic applying polishing disc to directly irradiate a wafer, meanwhile, the electromagnet is powered on to apply a uniform strong magnetic field, the wafer is soaked in polishing liquid, and an oxide layer on the surface of the wafer is removed under the coupling action of a light field, the magnetic field and a mechanical field. Ultraviolet light irradiates the surface of a semiconductor wafer to generate electron hole pairs, and then a magnetic field effect is introduced into a system to inhibit recombination of the photo-generated electron hole pairs, so that the hole survival time is prolonged, and the photochemical mechanical polishing efficiency is improved. The optical field and the magnetic field are applied to chemical mechanical polishing at the same time, and the material removal rate and the polishing quality are improved.

The present invention discloses a high-precision electric power measurement meter suitable for complex load environments, and relates to the technical field of electric power measurement. The present invention achieves high-precision monitoring of current by utilizing the magnetic field caused by current and the polarization change of light. The device structure adopts a dual magnetic field effect to improve stability, and reduces external interference through a vacuum-sealed environment, thereby ensuring the accuracy of the measurement results. At the same time, the modular design makes the device more adaptable in different environments and easy to adjust and maintain. The electric power measurement meter of the present invention has higher accuracy, stronger adaptability and longer service life, and is suitable for current monitoring of complex loads.

The present invention discloses a high-current common-mode inductor and a preparation method thereof. The core material of the wound magnet of the present invention is an FeCo composite material, which has a greater saturation magnetic flux density and greatly improves the working current of the product. At the same time, by doping Si and B elements, the grain size inside the particles can be refined to reduce eddy current and increase the use frequency of the material, so that FeCo materials can be used at frequencies of hundreds of kHz. A dense coating layer is formed between particles through a composite coating of nano-oxides, phosphates and borosilicate glass to further reduce eddy currents between particles and increase the application frequency of the material. The effective inductance value of the inductor is increased while the leakage current is reduced through the packaging structure, reducing the superimposed magnetic field effect of the leakage current and the working current, thereby achieving the effect of improving the working current of the product, meeting the device's requirements for common-mode inductor filtering performance, and is particularly suitable for application scenarios of high-power circuit filtering.

The invention relates to the technical field of injection molding equipment, in particular to efficient rare earth permanent magnet material injection molding equipment based on magnetic field orientation, which comprises a supporting leg, the top of the supporting leg is fixedly connected with a connecting block, and one side of the connecting block is fixedly connected with the outer wall of a storage assembly. The top of the storage assembly is fixedly connected with a driving assembly through a bolt, the inner wall of the driving assembly slidably abuts against the outer wall of the positioning assembly, the bottom of the positioning assembly slidably abuts against the top of the storage assembly, and the efficient rare earth permanent magnet material and the adhesive enter the storage barrel through the feeding pipe and then enter the storage barrel. A feeding pipe is sealed through a sealing cover, a driving motor and an electromagnetic block are started, the driving motor drives a rotating rod and a rotating plate to rotate through a driving pipe, an efficient rare earth permanent magnet material and an adhesive are mixed when the rotating plate rotates, and the electromagnetic block applies a strong magnetic field (generally larger than or equal to 0.8 A / m) to the interior of a storage barrel; the magnetic field effect enables the c-axis of the magnetic powder particles to be arranged in the magnetic field direction.

The invention provides a refrigerator ice maker and an ice making method thereof, and particularly relates to the technical field of refrigeration equipment. The ice maker comprises a base, an ice making assembly and a motor, the base is provided with an air inlet and a water filling nozzle; the motor is mounted at the rear end of the base; an output shaft of the motor is inserted into the rear end of the ice making assembly; the front end of the ice making assembly is rotationally connected with the front side wall of the base; the ice-making assembly comprises an ice-making bottom box and an ice-making grid, and the ice-making grid is movably arranged at the top of the ice-making bottom box; an electromagnetic component is arranged at the bottom of the ice-making bottom box, and a permanent magnet is arranged between the ice-making bottom box and the ice-making grid and corresponds to each electromagnetic coil of the electromagnetic component; and the ice-making grids are connected with the ice-making bottom box in a sucking manner or are separated from the ice-making bottom box in a lifting manner under the action that like poles repel each other or opposite poles attract each other of the electromagnetic coils and the permanent magnets. A traditional ice-making box is divided into two parts, and water in the ice-making bottom box is uniformly distributed under the action of a magnetic field in cooperation with a plurality of vertically-through ice lattices, so that ice blocks with the same size are obtained.

The invention discloses a bilateral permanent magnet fault-tolerant permanent magnet vernier motor and a torque increasing and eddy current loss reducing coupling analysis method thereof. Based on harmonic magnetic field analysis, contribution of each harmonic to torque and distribution characteristics of permanent magnet eddy current loss are decomposed, and classification control is carried out on the harmonic through comprehensive parameter optimization. The method specifically comprises the steps that a rotor adopts a consequent pole design, and a bidirectional magnetism gathering effect is formed by combining a stator split tooth embedded reverse Halbach array permanent magnet; based on magnetic field harmonic decomposition, contribution rates of different harmonic orders (such as 3, 7, 23 and the like) to output torque are quantified, and key gain harmonics and loss harmonics are identified; a permanent magnet eddy current loss model is established, and the proportion of specific harmonic orders (such as 10 times, 20 times and the like) to permanent magnet eddy current loss is deduced in combination with harmonic frequency and amplitude. A harmonic torque-loss tradeoff coefficient is defined, the harmonic amplitude, frequency and loss density are combined, risk grading is carried out on each harmonic of the motor, and the design priority is guided.

A magnetic implant device (1), which provides analgesic effects by increasing nitric oxide synthesis using pulsed magnetic field effects, accelerates the fusion of an implant with a bone and eliminates the negative effects of foreign bodies within the tissue, comprising: at least one coil (2) generating pulsed magnetic field effects; a control unit (7), which accelerates the bonding of the dental implant to the bone by means of the magnetic effect generated by said coil (2), allowing a change in the electromagnetic field strength of the generated pulsed magnetic field, and which has an adjustment button to adjust the frequency and power of the magnetic implant device (1), and a switch button to open and close the device, an applicator (9), which is adapted to the form of the jaw bone, the device can be used for treating all teeth of the upper and lower jaws, and provides uniform pulse electromagnetic effect for the application area of the device.

The invention relates to the technical field of polarization optics, and discloses a matrix method for polarization transmission analysis of a polarization-maintaining optical fiber, which comprises the following steps: S1, establishing a polarization angle measurement system based on the polarization-maintaining optical fiber, the polarization angle measurement system comprises an upper instrument and a lower instrument, and the upper instrument and the lower instrument are connected through the polarization-maintaining optical fiber; the upper instrument is provided with a polarization state generator, and the lower instrument is provided with a polarization state analyzer; s2, establishing a matrix model of a polarization maintaining optical fiber through the polarization angle measurement system in the S1, wherein the matrix model of the polarization maintaining optical fiber comprises a matrix model of a temperature effect, a matrix model of optical fiber bending, a matrix model of a magnetic field effect and a matrix model of a coupling effect; and S3, simulation analysis: simulating the polarization transmission process of the polarization maintaining optical fiber under different environmental factors, and verifying the correctness of the matrix model derivation of the polarization maintaining optical fiber in the S2. Based on the Jones matrix, the characteristic matrix of the polarization-maintaining optical fiber is realized, and the analysis complexity of the polarization-maintaining optical fiber in a complex system is simplified.

The utility model discloses a mechanism for changing a magnetic field effect through horizontal rhythm movement and horizontal movement of a nursing mattress. Comprising a mattress cover, a mattress sponge cushion, a fixed support assembly, a sliding rail assembly, an upper support assembly, a magnetic object, a rotary connecting assembly, a motor eccentric wheel assembly, a charging adapter, a battery assembly, a horizon sensor, a control box and a hand controller. The utility model provides a brand-new horizontal transverse (X-direction) and longitudinal (Y-direction) rhythm movement mode, provides more diversified and comfortable rhythm experience for users, and can be more suitable for old people and sub-health people to use.

The invention provides a foundation pit leakage detection device and a leakage judgment and positioning method. The leakage detection device comprises a magnetic excitation well, a magnetic excitation system, magnetic field measurement cloth, a simulated electromagnetic field data processing system and a control analysis system. The magnetic excitation system applies excitation current in the magnetic excitation well; the control analysis system carries out comparative analysis on a measurement result and a simulation result of the magnetic field, and if 90% or more data errors are smaller than 0.05, leakage is judged to be generated; the magnetic excitation system further comprises an electrode, and when leakage is judged through the judgment method, the diaphragm wall seam position corresponding to the depth where the electrode is located is the leakage position. Based on the current magnetic field effect, an original precipitation well is utilized, a large-range magnetic induction field is established, the leakage point position at the joint of the underground diaphragm wall is rapidly found, traditional salvage needle type low-efficiency detection is avoided, and in addition, the detection system can be moved.

The present invention provides a contact plasma therapeutic apparatus, comprising: an electrode and magnet module, connected to a housing through a flexible connection, the electrode and magnet module including an upper electrode and magnet part and a lower magnet part near the skin end; the upper electrode and magnet part successively includes a first permanent magnet, a first electrolytic iron, and an insulating dielectric layer; the lower magnet part near the skin end includes a second electrolytic iron and a second permanent magnet, fixed by an insulating cap of the outer housing; the first electrolytic iron and the hollow spherical electrode are electrically connected by a thread; the insulating dielectric layer has uniform micropores along the Z direction; the insulating dielectric layer is divided into upper and lower layers, and the two layers of dielectric are installed with a gap to form a micro-air gap; the first permanent magnet is magnetized in the vertical direction to generate a steady magnetic field in the Z-axis direction, which is used to confine electrons and form a micro-discharge channel to enhance the magnetic field effect; air is pumped by a micro air pump so that the air pressure in the micro-air gap of the insulating dielectric is lower than the atmospheric pressure, and the discharge electric field intensity is enhanced by stepwise breakdown.