41 results about "Induction effect" patented technology

The invention provides a drilling gas cut monitoring method and device based on a magnetic induction effect, and the method comprises the steps: pumping drilling fluid carrying magnetic particles marked by a magnetic marker into a shaft, and measuring the nearby magnetic field intensity through a magnetic signal induction short section arranged at the bottom of the shaft to obtain magnetic field data; and acquiring gas cut monitoring data according to the change condition of the magnetic field data in the preset period. Therefore, by monitoring the magnetic signal which responds to the gas cut very quickly, advanced early warning of the early trace gas cut is realized, and the response speed and sensitivity are superior to those of a sound wave or resistivity method; by actively introducing a magnetic marker and adopting a differential detection and temperature compensation algorithm, the problems that a resistivity method is greatly interfered by a stratum and a sound wave method is seriously influenced by well conditions and noise are effectively solved, the anti-interference capability is high, and the reliability is high.

The invention, which relates to the technical field of sugarcane monitoring, discloses a monitoring system for the induction effect of a sugarcane flowering phase, the system comprises a multi-dimensional sensing layer, an intelligent decision-making center and a precise execution layer. The multi-dimensional sensing layer collects illumination, temperature, phenological period, stress index and ScFT6 gene expression data through an environmental factor sensing module, a plant physiological status sensing module and a key gene expression real-time monitoring module; the intelligent decision center corrects a photoperiod and a temperature threshold through a dynamic threshold regulation and control model, and evaluates an induction effect in combination with gene expression; the precise execution layer executes shading, light supplement and temperature and humidity adjustment to form closed-loop regulation, and the system realizes dynamic precise regulation, improves the induction effect stability, adapts to complex environments and variety differences, and is suitable for sugarcane flowering phase induction monitoring.

A kind of design method and sensor of wide-range current sensor based on magnetomotive effect, in the method, magnetomotive body is provided and the magnetomotive body is arranged between energized conductor and magnetic field sensor sensing chip;The magnetic flux density at the position of the magnetic field sensor sensing chip is reduced by the magnetomotive effect of the magnetomotive body, so that the magnetic field sensor sensing chip remains linear response in wide current range, and wide-range current measurement is realized.By the action of high magnetic permeability magnetomotive body, the magnetic flux density at the position of TMR sensing chip is significantly weakened, so that the sensor magnetic saturation phenomenon is effectively delayed.The method significantly widens the current measurement range of the sensor under the premise of maintaining small size, and realizes the breakthrough of traditional TMR current sensor in wide-range measurement field.

The technical scheme of the utility model discloses a continuous automatic injection device for hastening parturition of masuhua parent fish. The continuous automatic injection device comprises a movable bracket, the fixing device is movably connected to the movable support and used for fixing the parent fish; the injection device is connected to the movable support, located beside the fixing device and used for injecting the parent fish fixed by the fixing device; wherein the injection device is provided with a peristaltic pump, the peristaltic pump is connected with the controller and used for controlling the dosage of injection every time, and automatic injection of the oxytocic agent is achieved through the peristaltic pump. The automatic injection device has the advantages of being easy and convenient to operate, accurate in dosage, high in efficiency, safe and reliable, automatic injection can be achieved, parent fishes do not need to be caught repeatedly, and the stress response of the parent fishes is reduced. And accurate injection dosage can be ensured, and the spawning induction effect is improved. Multiple parent fishes can be continuously injected, so that the spawning induction efficiency is greatly improved, and the large-scale production requirement is met. Meanwhile, the injection process is safe and reliable, and fish bodies are prevented from being damaged.

The invention discloses an equipment control method and system, and relates to the technical field of inductors, and the method comprises the steps: inputting the inductor design information of target induction equipment into a target exploration model, and obtaining a plurality of product design schemes, the prediction cost of each scheme, and an equipment control model of each scheme; determining a target design scheme according to the prediction cost of each scheme, inputting model test data of the target design scheme into a target exploration model, and adjusting a control model corresponding to the target design scheme to obtain a local control model; and the local control model is sent to the terminal equipment, and the terminal equipment carries out model deployment on the target sensing equipment according to the local control model. By means of the mode, the control model matched with the target induction equipment can be efficiently and rapidly output, the design efficiency of the inductor is greatly improved, meanwhile, the operation power consumption and the induction effect can be effectively balanced, and the performance consistency of the inductor in a terminal use scene is guaranteed.

This application provides a steel material for reactors and a method for preparing the same. The steel material for reactors includes a steel substrate and a protective coating. The protective coating includes an in-situ oxide layer on the surface of the steel substrate and an alumina layer on the in-situ oxide layer. The in-situ oxide layer includes α-Fe₂O₃, and the alumina layer includes α-Al₂O₃. In the steel material for reactors, the α-Fe₂O₃ in the in-situ oxide layer serves as a growth template for the alumina layer. Through the mutual matching and induction effect of crystal structures, the protective coating forms a dense protective barrier on the surface of the steel substrate, effectively reducing the permeation of hydrogen and its isotopes deuterium and tritium.

The utility model provides an adsorption installation type wireless fast charger which comprises a base, one side of the base is rotatably connected with a supporting frame, the other side, far away from the supporting frame, of the top end of the base is rotatably connected with a placing plate, a sliding groove is formed in one side of the placing plate, guide grooves are formed in the positions, located on the two sides of the sliding groove, in the placing plate, and the guide grooves are communicated with the sliding groove. A wireless charger is slidably connected into the sliding groove, guide blocks are fixedly installed at the two ends of the wireless charger, and the two sets of guide blocks are slidably installed in the guide grooves correspondingly. According to the utility model, the magnetic plates are mounted in the multiple groups of mounting grooves in the placement plate, and the magnetic blocks are mounted on the two sides of the guide block, so that the wireless charger can relatively support and move according to the placement condition of the mobile electronic equipment, the induction effect of the adsorption induction area and the mobile electronic equipment is better, and the charging effect is improved.

The utility model provides a road central isolation guardrail device, belongs to the technical field of road safety facilities, and effectively solves the problems that an existing road central guardrail is low in safety and the like. According to the technical scheme, the device comprises stand columns, cross rods are arranged between the two stand columns, the bottoms of the stand columns are fixedly connected with the ground, connecting pieces are arranged on the outer walls of the stand columns, an upper cross rod, a middle cross rod and a lower cross rod are connected with the three connecting pieces through fixing bolts and nuts respectively, sight induction components are arranged on the two sides of the upper cross rod, and a buffering energy absorption component is arranged on the inner side of the middle cross rod. Arc-shaped guide plates are arranged on the two sides of the lower transverse rod. The road center isolation guardrail device has the advantages of being good in buffering and energy absorption effect, good in sight line induction effect, strong in guiding function, convenient to install and maintain and the like.

The utility model relates to the technical field of chilled beams, in particular to a variable air volume chilled beam which comprises a plenum chamber, an air inlet pipe is arranged on the plenum chamber, a connecting wall is arranged in the plenum chamber and divides the plenum chamber into a total air inlet cavity and a total air outlet cavity, the total air inlet cavity is communicated with the air inlet pipe, and the total air outlet cavity is communicated with the air outlet pipe. The connecting wall is provided with a plurality of first exhaust outlets communicating with the main air inlet cavity and the main air outlet cavity, the static pressure box is provided with an air outlet communicating with the main air outlet cavity, and an air return panel is arranged at the air outlet. A branch pipeline is arranged in the air inlet pipe, an air volume adjusting valve is arranged in the branch pipeline, a branch air inlet cavity communicated with the branch pipeline is formed in the main air inlet cavity, and a plurality of second exhaust outlets communicated with the branch air inlet cavity and the main air outlet cavity are formed in the connecting wall. The air supply volume can be adjusted, meanwhile, the fresh air induction effect is guaranteed, noise is controlled, and the personnel comfort effect is guaranteed.

The invention belongs to the technical field of brain-computer interfaces, and aims to solve the problems of low normal form stimulation induction effect, poor time sequence design adaptability and low interaction efficiency of a current motor imagery brain-computer interface. The invention provides a motor imagery brain-computer interface normal form design method based on finger flexion. The method comprises the following steps: dividing a single task time flow of a motor imagery normal form based on finger flexion; setting an off-line task or an on-line task of the motion imagination normal form of finger flexion; wherein in the task prompting stage of the offline task, a first finger buckling image is randomly presented, and a unique correct finger buckling key pressing action is correspondingly set based on the first finger buckling image; in the task prompting stage of the online task, the second finger buckling image is randomly presented, and multiple correct finger buckling key pressing actions are correspondingly set based on the second finger buckling image. According to the invention, the reaction effect and concentration degree of the subject on the motor imagery task can be improved, and the practicability of the BCI system in hand refined rehabilitation application is improved.

The application discloses a bicycle power mechanism rotation detection method, an electronic device, an electronic system and a computer readable storage medium. The method comprises the following steps: acquiring acceleration of the power mechanism collected by an accelerometer, and / or acquiring a direction angle of the power mechanism collected by a magnetometer; and determining a first rotation number of the power mechanism based on the acceleration and / or the direction angle. The method can determine the rotation number of the power mechanism by using the acceleration collected by the accelerometer and / or the direction angle collected by the magnetometer, and does not need to detect the rotation number by recording the number of times that a magnet rotates through the position of a sensor by using a Hall effect or a magnetic induction effect. Therefore, the method not only has high anti-magnetic interference capability, but also reduces the influence of road bumps on collected data, thereby improving the accuracy of detection of a pedal frequency.

The application discloses a mosquito trapping module and a mosquito trapping device, and relates to the technical field of vector biological prevention and control. The mosquito trapping module comprises at least one chemotactic signal regulation unit for releasing a first gas containing chemotactic signal molecules; and at least one power signal driving unit for releasing a second gas, wherein the second gas has a chemotactic induction effect and can provide kinetic energy load. When the second gas is released, a directional jet flow with a preset momentum is generated. The directional jet flow actively envelopes the first gas and guides its diffusion in a local physical interference area outside the mosquito trapping module through the entrainment effect, so that the natural diffusion of the first gas is blocked and forced to converge into the core area of the directional jet flow, thereby forming a high-coherent composite gas plume in the space outside the mosquito trapping module. The mosquito trapping module can simulate the natural state of human or animal emission of CO2 and carrying of skin odor, and significantly improves the mosquito trapping efficiency.

The application relates to the technical field of digital printing machines, and discloses a double-beam digital printing machine. A printing trolley is slidably connected with a first beam and a second beam through the movers on the two sides of the printing trolley. The double beams can provide a large lifting force. The top and the side of the beams are both provided with first sliding rails. The increase of the first sliding rails on the top and the side increases the stress on the sliding rails. Under the large weight of the printing trolley, the stability of the printing trolley during operation can be improved. The first sliding rails on the top of the beams can increase the bearing force, and the first sliding rails on the side can improve the operation accuracy. The driving of the printing trolley is simultaneously realized through a linear motor and the movers. The linear motor is arranged above the beams, and the structure is simple, the installation accuracy can be easily ensured, the thrust can be increased, the movers of the movers are electrified, a magnetic induction effect is generated, a thrust is provided to the printing trolley, the two sides of the movers are controlled in parallel, the two movers can be synchronously driven, the driving force can be kept synchronous, the accuracy can be precisely controlled, and the printing stability and the accuracy can be effectively ensured.

The present application relates to the field of medical materials, in particular to an artificial ligament and a preparation method thereof.The artificial ligament provided by the present application comprises a gel layer-artificial ligament composite system by preparing a layer of PVA hydrogel on the surface of the woven artificial ligament in situ, which has biological activity and anti-creep performance, and is beneficial to improve the medium and long-term clinical prognosis of the woven artificial ligament.The artificial ligament provided by the present application can also adjust the rigidity, thickness and micro-topology of the gel layer under cyclic loading, thereby producing different biological activity regulation effects, and there is a balance point of rigidity and micro-topology, so that the cell ingrowth induction effect is best.The artificial ligament provided by the present application has simple composition, only relies on biophysical clues to regulate cell behavior, avoids the biological safety problems caused by complex biological chemical components, and can simultaneously realize the biological activity improvement and anti-creep performance improvement of the traditional PET woven artificial ligament.

The invention relates to the technical field of linear motors, and particularly discloses a linear actuating device and a hair cutting device.An installation frame is arranged, electromagnets are horizontally arranged in electromagnet installation parts, magnet sets are arranged in magnet set installation parts, and therefore the magnet sets are opposite to the magnetic poles of the corresponding ends of the horizontally-arranged electromagnets; after the electromagnet is electrified by alternating current, the magnet group can be promoted to reciprocate along the direction vertical to the central axis of the electromagnet through the magnetic induction effect of the electromagnet and the magnet group. The electromagnet is horizontally arranged, and meanwhile, the magnet group is arranged on the side of the electromagnet and is opposite to the magnetic pole of the electromagnet, so that the transverse space can be fully utilized, the height of the linear actuating device is greatly reduced, the length of a product adopting the linear actuating device is reduced, and the proportions of the linear actuating device in the length direction and the transverse direction are coordinated; the aesthetic feeling of the product appearance is improved.

The utility model discloses a continuous mousetrap in a mirror trapping mode in the related technical field of mousetraps, which comprises a mouse entering cage and a mouse containing cage, the mouse entering cage is of a right trapezoid structure, a mouse entering door is arranged at one end of the mouse entering cage, a pedal main body is rotatably connected and installed in the mouse entering cage, and the mouse containing cage is provided with a mouse entering door. In a natural state, the pedal main body is of an inclined structure, the inclined lower end of the pedal main body is located at the mouse inlet door, the end of the position, matched with the mouse inlet door, of the pedal main body is of an arc-shaped bent structure, and a mounting plate is fixedly arranged at the extending position, located at the inclined upper end of the pedal main body, in the mouse inlet cage. The mirror is installed at the inclined front end of the pedal body in the mouse entering cage, a mouse enters from the mouse entering door and walks on the pedal body, due to the light reflecting effect of the mirror, the mouse can take a very long channel inside, and the mouse sees the mouse in the mirror to take a companion inside, so that the mouse is prevented from being damaged. A good induction effect is achieved on the continuous advancing of the mouse along the pedal.

The application provides a support seat rotating assembly and a twist machine. The support seat rotating assembly comprises a base, a support seat, a magnetic part and a first circuit board. The base is used for laying on a table top or a ground. The base is provided with a rotating seat. The support seat is rotatably connected to the base and rotates along the axis of the rotating seat. The magnetic part is installed on the rotating seat and is arranged stationary relative to the base. The first circuit board is contained in the internal space of the support seat and is installed on the support seat. The first circuit board is integrated with a Hall sensor. The Hall sensor is located on one side of the magnetic part. The Hall sensor adjusts the position along with the rotation of the support seat and has a Hall induction effect with the magnetic part. The number of rotations of the support seat relative to the base is counted through the Hall induction effect. The number of rotations of the user is counted. The number of rotations of the support seat relative to the base cannot be counted. The rotation convenience of the support seat rotating assembly is improved.

The utility model discloses a knife net electronic target, which relates to the technical field of dart targets and mainly comprises a target body frame, a target body embedded in the target body frame, a metal knife net and a bull eye which are embedded in the target body, and a number ring fixed outside an invalid partition of the target body, the partition induction lines are fixed below the metal knife net but are not in contact with the metal knife net at all, leads of the partition induction lines are arranged below an annular diameter or a longitudinal diameter of the metal knife net, perspective observation is performed from a vertical target surface view angle, and the metal knife net completely and correspondingly covers the partition induction lines. On the premise that the magnetic induction effect of the partition induction lines is not affected, the induction lines are effectively protected, and damage to the induction lines caused by dart throwing is avoided.

The invention relates to the technical field of experimental equipment, in particular to a wheat seedling stage disease resistance induction incubator integrating temperature, humidity and light regulation and control. Multi-factor precise coordinated regulation and control of temperature, humidity and light can be achieved, three regulation and control assemblies are linked through a control center, the temperature regulation and control assembly is matched with multiple sensors to guarantee uniform and precise temperature control, the humidity regulation and control assembly can precisely regulate the humidity in the box, and the light regulation and control assembly is provided with a multi-wavelength optical filter and can be rapidly replaced according to needs to meet different disease resistance induction requirements; the rotatable cultivation chamber is combined with a staggered cultivation box design, and is matched with constant-speed rotation of a turntable, so that the uniformity of a cultivation environment is greatly improved, the growth difference of seedlings is avoided, and the accuracy and repeatability of a disease resistance induction effect are guaranteed; the equipment is reasonable in structural design, the cultivation box and the optical filter are convenient to take, place and replace, a control center display screen can visually monitor and adjust parameters, and the operation difficulty is low; multiple sensors accurately monitor environmental parameters in real time, and data is wirelessly transmitted to a control center to realize automatic regulation and control, so that human intervention is reduced.

Through the design thought of thermal expansion compensation-residual stress regulation, a negative thermal expansion material Sc2W3O12 is introduced into an alpha-Si3N4 matrix with a lower thermal expansion coefficient as a reinforcing phase, and the Si3N4 / Sc2W3O12 composite ceramic cutter material is prepared by adopting a spark plasma sintering technology and an in-situ synthesis technology; by controlling the thermal expansion coefficient of the multiphase ceramic cutter, the residual thermal stress level in a cutter material is actively regulated and controlled, so that the requirements of an advanced manufacturing technology on high mechanical property and high cutting reliability of the ceramic cutter are met. The interface has transfer and induction effects, so that the ceramic cutter material can obtain good interface bonding strength by adjusting the content of the negative thermal expansion additive phase.

The application discloses a SiC super-junction structure, a SiC device and a manufacturing method thereof. The super-junction structure comprises a first P region, a high dielectric constant dielectric material and other oxides are filled in the first P region, the proportion of tetrahedral structure to octahedral structure in the molecular configuration of the high dielectric constant dielectric material exceeds a conventional value, the tetrahedral structure contains negative charges, and the octahedral structure contains positive charges; and a second P region, which is located on both sides of the first P region, has the same material as that of an N region, and is rich in positive charges, the positive charges are gathered by the negative charges of the tetrahedral structure in the first P region, and the width of the second P region is determined by the net excess charge amount of the tetrahedral structure to the octahedral structure in the first P region and the doping concentration of the N region. The application has the advantages that the negative induction effect of the tetrahedral structure effectively improves the withstand voltage under the condition of keeping the width of the super-junction structure, thereby reducing the size of the device and the cost.

The application discloses a kind of intelligent control methods of titanium alloy VAR smelting stirring intensity, it is related to metal material smelting technical field, comprising the following steps: S1, the stirring force distribution in VAR smelting process is calculated;S2, according to force distribution, the flow velocity field and temperature field of molten pool are calculated;S3, according to flow velocity field and temperature field, vortex field distribution model is constructed;S4, according to vortex field, molten pool electromagnetic stirring force field is optimized;S5, based on the optimized electromagnetic stirring force field, arc scanning mode is adjusted;S6, based on dynamic flow feedback, arc scanning real-time regulation and control is carried out;By setting the electromagnetic stirring control model based on vortex field optimization, the precise regulation and control of molten pool flow is realized, the stirring uniformity is improved, and the smelting quality is optimized.The method uses non-steady-state electromagnetic stirring force calculation, combines vortex induction effect dynamic adjustment stirring intensity, so that molten pool flow velocity distribution is more uniform.

The utility model provides a slurry pipeline blockage detection system and a battery production system, and relates to the technical field of battery production, and the system comprises at least one detection unit which is arranged along the outer wall of a pipeline at intervals; the pipeline is internally provided with a pigging ball, and the pigging ball is configured to be capable of moving in the pipeline; the detection unit comprises an indication module, and the detection unit is configured to control the indication module to change an indication state under the condition that the spherical pig passes through the detection unit. Wherein the spherical pig has magnetism, each detection unit comprises a magnetic induction switch, the magnetic induction switch of each detection unit is coupled with the indication module, and the magnetic induction switch is configured to drive the indication module to change the indication state under the magnetic induction effect of the spherical pig. According to the embodiment, manual detection is not needed, and the pipeline blockage detection efficiency and the production safety are improved.

The invention discloses an ice cream discharging device and an ice cream machine. The ice cream discharging device comprises a magnetic switch, an ice cream barrel, a feeding assembly and a discharging valve assembly. In the working process, when an operator pulls a valve rod to enable the valve rod to move upwards to reach an opening position, an induction magnet installed on the valve rod can be close to a magnetic switch along with the valve rod, a magnetic field induction effect is generated, and the magnetic switch starts a rotary driving piece in the feeding assembly to enable the rotary driving piece to start rotary feeding movement. The problem of pollutant contact possibly generated by a traditional mechanical contact type switch is effectively avoided; meanwhile, the counter can accurately record the number of times that the light is blocked by the shading base every time, and the number of times of blocking is converted into the actual number of turns of rotation of the rotary driving piece according to the number of times of blocking. And high-precision rotation number metering can be realized, so that the extrusion amount of ice cream is accurately controlled, and the component of each part of product is ensured to meet the standard requirement.

The utility model discloses a brake-by-wire pedal which comprises a base, a pedal arm assembly is arranged outside the base, a first coaxial sensor assembly and a second coaxial sensor assembly are arranged on the left side and the right side of the base respectively, a simulator mounting groove is formed in the front face of the base, a pedal force simulator is arranged outside the base, and the pedal force simulator is arranged in the simulator mounting groove. A pedal arm groove is formed in the front face of the base, a through hole is formed in the inner wall of the pedal arm groove, a rotating shaft is arranged outside the base, a positioning groove is formed in the outer surface of the rotating shaft, a limiting groove is formed in the front face of the base, and a limiting block is arranged outside the base; and the outer surface of the coaxial sensor main body is fixedly connected with a plurality of fixing pieces. According to the brake-by-wire pedal, brake simulation can be conducted, brake information of the pedal can be inductively transmitted, meanwhile, the brake-by-wire effect is achieved, and the induction effect during brake is improved.

The invention discloses a negative pole piece and a secondary battery, and belongs to the technical field of electrochemical energy storage, the negative pole piece is characterized in that a lithium-loving layer and a framework deposition layer are simultaneously arranged on a current collector, and the conductivity of the framework deposition layer and a lithium-loving included angle of the lithium-loving layer are cooperatively regulated and controlled; according to the present invention, the lithium metal can be uniformly deposited from bottom to top based on the induction effect during the deposition process, the structure stability of the pole piece structure layer during the deposition process is high, the interface stability of the pole piece and the electrolyte is high, the side reaction is reduced, and the pole piece has characteristics of low expansion rate, long cycle life and ideal rapid charging performance when the pole piece is applied to the secondary battery.

The application relates to the technical field of rice processing, and discloses a single-walled carbon nanotube preparation method, which comprises the following steps: providing a stirring device in a reactor to provide a uniform dispersion environment, applying an electric field to realize directional control, changing the temperature periodically according to a preset program to experience a thermal shock-stabilization-gradual cooling cycle process, and generating a hydrodynamic pulse to form a transient stress induction effect by changing the stirring mode at a specific time point. The application realizes accurate regulation of the spatial configuration, crystallinity and orientation of the single-walled carbon nanotube through the synergistic effect of multiple physical fields, and prepares a single-walled carbon nanotube product with a special curvature structure, high crystallinity and highly oriented arrangement, so that the application requirements of high-end electronic devices, super capacitors and the like can be met.

The invention relates to the technical field of underground engineering construction, in particular to a rockburst tendency comprehensive evaluation method considering multiple engineering factors, which not only considers internal causes inducing rockburst, including the brittleness index of rocks and the capacity of accumulating elastic strain energy of surrounding rocks, but also considers external causes affecting the strength of rockburst. Comprising the stress of a rock occurrence environment, the development degree of a surrounding rock structural surface and the underground water influence of a located engineering area, a specific standard for correcting the rockburst grade according to the underground water state is provided, meanwhile, the surrounding rock excavation unloading induction effect is considered, and a surrounding rock energy calculation method after excavation unloading is provided; compared with an intelligent algorithm prediction method established based on a plurality of quantitative evaluation indexes at present, the method solves the problems that an evaluation model is complex and the reliability of an evaluation result is poor. According to the method, the evaluation process is sufficient in basis, a closed loop is formed, the scientificity and accuracy of the evaluation process and result are improved, and the safety management cost is reduced.

The utility model provides a mobile sound wave rainfall induction system, which realizes the mobility of sound wave rainfall induction equipment by arranging a mobile device and improving the structure of the sound wave rainfall induction equipment, so that the mobile sound wave rainfall induction system can be flexibly moved according to research or monitoring requirements, and meanwhile, the mobile sound wave rainfall induction system is convenient to use. And sound waves can be emitted to a specified area at a specified angle, so that the rainfall induction effect is improved. The movable sound wave rainfall induction system comprises sound wave rainfall induction equipment and a moving device, wherein the moving device is used for supporting the sound wave rainfall induction equipment; the sound wave rainfall induction equipment comprises a sound wave emitter and a sound wave bundling piece communicated with an outlet of the sound wave emitter; the moving device is further provided with a driving piece and a connecting piece, the sound wave bundling piece is hinged to the moving device through the connecting piece, and the driving piece is directly or indirectly connected with the sound wave bundling piece to drive the sound wave bundling piece to rotate to a set position.