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208 results about "Electromagnetic emission" patented technology

Unmanned aerial vehicle full-aviation electromagnetic emission system and control method

The invention belongs to the technical field of unmanned aerial vehicle full-aviation electromagnetic detection, and particularly relates to a full-aviation frequency domain electromagnetic emission system and a control method. A broadband frequency mixing and matching circuit is connected in series between an H-bridge power inverter and an emission coil of an unmanned aerial vehicle electromagnetic emission system; the broadband mixing and matching circuit comprises a first resonance unit formed by connecting a fixed capacitor and an adjustable inductor in parallel and a second resonance unit formed by connecting a fixed capacitor and an adjustable inductor in parallel, and the first resonance unit and the second resonance unit are connected in series. The adjustable inductor is matched with the dynamic impedance of the inductive load by adjusting the inductance value, and the broadband frequency mixing and matching circuit can adjust the impedance in real time, so that the matching of different resonant frequencies is realized, and the frequency range of a matching signal can be obviously widened.
Owner:JILIN UNIVERSITY

Sea water area karst cave group transient electromagnetic collaborative investigation data processing method and system

The invention discloses a sea water area karst cave group transient electromagnetic collaborative investigation data processing method and system, and the method comprises the steps: transmitting a wide frequency spectrum excitation signal to the seabed through a shipborne transient electromagnetic transmitting system, and synchronously collecting a secondary field attenuation signal responded by a seabed medium through a pull-type receiving array, meanwhile, a distributed sensor network is arranged at a preset seabed node to collect background noise base data; performing motion attitude compensation on the secondary field attenuation signal to generate transient electromagnetic response data; constructing an adaptive filter based on the background noise base data, performing noise suppression processing on the transient electromagnetic response data, and outputting noise suppression data; and performing space-time alignment on the noise suppression data of the towed array and the seabed node data to form a three-dimensional space sampling data set. According to the method, high-precision fusion of deep and shallow detection data and quantitative evaluation of the stability of the karst cave are realized, and the detection reliability and the engineering risk early warning capability of the complex ocean karst area are remarkably improved.
Owner:CHINA RAILWAY INVESTMENT GRP CO LTD +3

Low-altitude logistics distribution method and system based on electromagnetic launching unmanned aerial vehicle technology

The invention provides a low-altitude logistics distribution method and system based on an electromagnetic launching unmanned aerial vehicle technology, and the method comprises the steps: installing a modular electromagnetic launching system in a designated region of a first logistics park; the unmanned aerial vehicle is connected with the modular electromagnetic emission system, and cargo loading and parameter calibration are carried out; dynamically planning a flight route of the unmanned aerial vehicle from the first logistics park to the second logistics park; the electromagnetic emission system is started to accelerate the unmanned aerial vehicle, and the pulse power modulation technology is utilized to control the output of specific pulse power in different stages, so that the unmanned aerial vehicle reaches a specified take-off speed within a preset distance range; the unmanned aerial vehicle autonomously flies along the flight route and autonomously performs obstacle avoidance and path correction, and the flight route or task sequence of the unmanned aerial vehicle is dynamically adjusted; and deploying a modular catapult stopping system in the second logistics park to complete stopping of the unmanned aerial vehicle. According to the invention, the acceleration efficiency can be improved to ensure that the unmanned aerial vehicle keeps a safe distance from the obstacle while keeping the distribution efficiency.
Owner:BEIJING HANGYUE TIMES TECHNOLOGY CO LTD

Electromagnetic emission test method for intelligent household electrical appliance

The invention discloses an electromagnetic emission test method of an intelligent household electrical appliance, which simulates a dynamic interaction process by controlling multiple modules to run simultaneously according to a preset logic, and comprises the following steps: acquiring electromagnetic signals in real time and performing frequency domain conversion to obtain frequency spectrum distribution; identifying a target frequency band which generates energy convergence due to non-linear superposition and peak intensity of the target frequency band; obtaining a superposition waveform sequence and classifying a nonlinear superposition mode; identifying an abnormal interference mode by combining the peak intensity and a mode classification result; associating the abnormal frequency band with the module operation log, and analyzing an interaction time sequence and logic to determine a cause; a filtering or regulation strategy is applied based on the cause, whether the peak value is reduced is verified and a report is generated. According to the invention, through energy convergence frequency band identification, non-linear superposition mode classification, interference cause tracing, directional regulation and closed-loop verification, accurate diagnosis and root positioning of hidden transient interference are realized, so that the test depth is improved, the rectification efficiency is optimized, and the predictability of product electromagnetic compatibility design is enhanced.
Owner:苏州市产品质量监督检验院(苏州市质量技术监督综合检验检测中心苏州市质量认证中心) +1

Controllable source electromagnetic method time-frequency domain three-dimensional forward modeling and feature analysis method

The invention relates to the technical field of exploration geophysics. The time-frequency domain three-dimensional forward modeling and feature analysis method based on the controllable source electromagnetic method comprises the steps that electrical parameter measurement processing is conducted on a target area rock ore specimen, and an electrical parameter set is obtained; based on the electrical parameter set, performing electrical category division processing through clustering analysis to generate an electrical classification knowledge base; acquiring an electromagnetic emission signal; performing time domain forward modeling calculation processing to obtain transient response; based on the electromagnetic emission signal and the electrical property classification knowledge base, performing frequency domain forward modeling calculation processing to obtain a specified frequency band response; performing parameter iterative optimization processing to generate a three-dimensional electrical parameter model; performing abnormal region extraction processing based on the three-dimensional electrical parameter model to obtain a target abnormal region; and carrying out boundary delineation processing on the target body to obtain a spatial position of the target body so as to achieve the technical effects of improving the characterization precision of the electrical parameters, reducing the reconstruction distortion of the time-frequency response and enhancing the geological interpretability of an inversion result.
Owner:XIAN NORTHWEST COLORING MATTER CHEM PROSPECTING CORPS CO LTD

Semi-aviation transient electromagnetic detection system based on cooperation of robot dog and unmanned aerial vehicle

The invention relates to the technical field of geophysical exploration, in particular to a semi-aviation transient electromagnetic detection system based on cooperation of a robot dog and an unmanned aerial vehicle, and the system consists of a robot dog platform, an unmanned aerial vehicle platform and a ground control station. The robot dog platform comprises a high-power transient electromagnetic transmitter, a line source laying module, a voice warning module and a mobile positioning module, and can automatically lay a line source and inject pulse current to the ground; the unmanned aerial vehicle platform comprises a visual field auxiliary module, a flight driving module and a receiving coil, and the coil can be dragged according to a preset route to collect electromagnetic data; the ground control station is used for job scheduling and data processing. Wiring-transmitting-receiving integrated collaborative operation is realized through the robot dog and the unmanned aerial vehicle, and the robot is suitable for detection of a complex mountain environment.
Owner:ZHEJIANG HUADONG CONSTR ENG

Electromagnetic track damage detection method and system based on multi-field coupling analysis

The invention discloses an electromagnetic track damage detection method and system for multi-field coupling analysis, and relates to the technical field of electromagnetic track launching devices.The electromagnetic track damage detection method comprises the steps that simulated pivot track loop pulse current, armature mechanical parameters and armature kinematics parameters are obtained and imported into an electromagnetic heat multi-physics field coupling model, and a field-circuit coupling model is obtained; obtaining current density and temperature distribution along the boundary of the pivot rail contact interface and the boundary of the inner side of the armature groove in the simulation process under multi-physics field coupling; the optimal initial position of armature placement is determined according to the change of the current density and the temperature under different armature placement initial positions, and the optimal track material is determined according to the change of the current density and the temperature under different set electromagnetic emitter track materials; an electromagnetic track launching system simulation experiment platform is built, surface damage at different positions of a track is tested under different pulse current peak values and launching times, and track surface accumulated wear and ablation damage characteristics under different working conditions are clear.
Owner:SHANDONG UNIV

Electromagnetic interference risk assessment method based on expert knowledge and neural network

The invention discloses an electromagnetic interference risk assessment method based on expert knowledge and a neural network, and the method comprises the steps: building an electromagnetic interference risk assessment index system of a to-be-assessed object, bottom layer indexes of the index system comprise a power grid ripple coefficient, power grid peak signal conduction emission, power grid harmonic characteristics, electromagnetic emission characteristics, electromagnetic sensitivity characteristics, filtering characteristics and conduction and radiation safety margin. Establishing a potential interference source and potential sensitive equipment electromagnetic compatibility evaluation data set by using an expert knowledge method; and using the neural network to carry out electromagnetic interference risk assessment training and assessment of the to-be-assessed object. The method can give full play to the advantages of strong pertinence and high flexibility of expert knowledge and the advantages of strong ability of automatic knowledge acquisition and nonlinear mapping of a neural network, and realizes adaptive assessment of electromagnetic interference risks according to real-time acquisition and analysis of an electromagnetic environment; according to the method, manual parameter setting is not needed any more, the evaluation process is easier to implement, and the reliability of the evaluation result is higher.
Owner:CHINA SHIP DEV & DESIGN CENT

Hybrid multi-frequency reactive compensation method for seabed electromagnetic emission system

The invention belongs to the technical field of seabed hole domain electromagnetic detection, and relates to a hybrid multi-frequency reactive compensation method for a seabed electromagnetic emission system, which comprises the following steps of: designing a topological structure of a hybrid multi-frequency reactive compensation system according to an impedance matching requirement of a low-frequency emission frequency band of the seabed electromagnetic emission system; deducing a compensation strategy and an implementation method of the hybrid multi-frequency reactive power compensation system based on the multi-frequency reactive power compensation requirement of the load; and analyzing the influence of the reactive compensation combination proportion of the impedance matching part of the passive TCC and the impedance matching part of the active ICC on the requirement of the direct-current power supply voltage VICC, and carrying out parameter design of the passive TCC and the active ICC. According to the hybrid multi-frequency reactive compensation technology, the single-frequency reactive compensation capability is further expanded into self-adaptive dynamic compensation of multi-frequency reactive power in a wide frequency band; the additionally introduced active impedance matching part effectively improves the multi-frequency impedance matching precision, and the frequency spectrum energy utilization rate of multi-frequency transmitting signals is further improved in a low-frequency transmitting frequency band.
Owner:JILIN UNIVERSITY

Electromagnetic detection transmitting system facing urban underground space and control method

The invention belongs to the technical field of electromagnetic detection, and particularly relates to an electromagnetic detection transmitting system for urban underground space and a control method, the electromagnetic detection transmitting system comprises a direct current power supply, an inverter and a load which form a traditional electromagnetic transmitting circuit, and a composite impedance matching network is connected in series between the inverter and the load; the composite impedance matching network comprises an active matching network and a passive matching network, the active matching network comprises an H bridge circuit composed of four IGBT transistors and a coupling transformer, one output end of the inverter passes through one end of the secondary side of the coupling transformer, and the primary side of the coupling transformer is connected with the H bridge circuit; and one end of the passive matching network is connected with the other end of the secondary side of the coupling transformer, the other end of the passive matching network is connected with one end of the load, and the other end of the load is connected with the other output end of the inverter, so that the situation that the emission energy of the full-aviation emission system of the unmanned aerial vehicle is weakened due to dynamic impedance change generated in actual motion is avoided.
Owner:JILIN UNIVERSITY

Self-adaptive multi-frequency resonance matching system and design method

The invention belongs to the technical field of electromagnetic detection, and particularly relates to a self-adaptive multi-frequency resonance matching system and a design method, the self-adaptive multi-frequency resonance matching system comprises a magnetic coupling resonance module and a controllable variable impedance unit which are connected in series, a switch control capacitor comprises a matching capacitor and a control switch which are connected in parallel, and a switch control inductor comprises a matching inductor and a control switch which are connected in series; the magnetic coupling resonance module comprises an inductor and a capacitor, and the capacitor is connected with the inductor in parallel and then connected with the inductor in series. The signal strength of the multi-frequency grounding type electromagnetic transmitter is improved, and efficient transmission of the multi-frequency excitation signals is achieved.
Owner:JILIN UNIVERSITY

Electromagnetic emitter with magnetic shielding and electromagnetic induction eddy current heating function and electronic cigarette comprising electromagnetic emitter

The utility model discloses an electromagnetic induction eddy current heating electromagnetic emitter with magnetic shielding, the electromagnetic emitter comprises a magnetic shielding cover (1), a coil (2) and a coil support (3), the coil (2) comprises a coil main body (21) formed by conducting wires and a pair of coil pins (22), the coil support (3) comprises a support wall (31), a support bottom (32) located at the lower end of the support wall (31) and a pin through hole (33), and the support wall (31) is connected with the support bottom (32). The coil body (21) is arranged on the coil support (3), the coil pins (22) penetrate out of the pin through holes (33), and the coil body (21) is located in a coil space (14) defined by the coil support (3) and the magnetic shielding cover (1). The structure of the magnetic induction coil assembly is simplified, the magnetic shielding efficiency is improved, the provided electromagnetic emitter is high in integration degree, large-scale assembly production is facilitated, and the production efficiency of electronic cigarette appliances can be effectively improved.
Owner:ZHONGSHAN AIMENG TECHNOLOGY CO LTD

Graphene coating H-shaped armature of electromagnetic rail gun

The invention discloses an H-shaped armature of an electromagnetic rail gun, and belongs to the technical field of electromagnetic emission. The wind power generation device comprises a windward front surface, a windward curved surface, a windward inner surface, a top surface, a bottom surface, side surfaces, a leeward front surface, a leeward curved surface and a leeward inner surface, the graphene film is characterized in that both the top surface and the bottom surface are coated with graphene. According to the invention, the stability in electromagnetic emission is better, the emission efficiency can be effectively improved, and the graphene coating is coated on the surface of the armature in combination with the shape, so that the armature can reach a higher average speed and has a better arc ablation resistance effect, and the armature also has a certain lubrication effect; the conductive filler can be used as a good interface conductive filler to improve the contact state of a pivot rail interface. Therefore, the problems of'planing ', 'ablation', 'adhesion ', 'transition' and the like in the electromagnetic gun launching process are further improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV

Magnetic resistance type electromagnetic coil emitter power supply based on half-control switch and control method

The invention discloses a magnetic resistance type electromagnetic coil emitter power supply based on a half-control switch and a control method, and belongs to the technical field of electromagnetic emission. Which comprises a primary power supply and a transmitting coil connected with the primary power supply, and is characterized in that a bridge circuit is arranged between the primary power supply and the transmitting coil, a pulse capacitor is arranged in the bridge circuit, and the pulse capacitor and the transmitting coil are connected through a first discharge loop and a second discharge loop; half-control switch devices are arranged in the first discharge loop and the second discharge loop, and the conduction directions of the first discharge loop and the second discharge loop are opposite and the first discharge loop and the second discharge loop are conducted in a time-sharing manner. According to the magnetic resistance type electromagnetic coil emitter power supply based on the half-controlled switch and the control method, the pulse capacitor and the direct-current power supply are combined, so that wide pulses can be generated, under the condition of the same acceleration effect, the current amplitude is greatly reduced, the magnetization saturation degree of an armature can be reduced, and the emission efficiency of a system can be improved.
Owner:SHANDONG UNIV OF TECH

Contraband security gate detection device

The utility model relates to security door technical field especially relates to a kind of contraband security door detection device, including shell, blocking cross bar and drive assembly, the inside of shell is provided with stand, the outside of stand is provided with electromagnetic transmitter, the inside of shell is provided with electromagnetic receiver, the outside of stand is provided with rotating blocking cross bar, the top of shell is provided with detection camera, the side of shell is provided with partition wall and is divided into entrance side and exit side;The utility model is formed by shell and stand Rotary channel, and three sets of electromagnetic transmitter and electromagnetic receiver are set in channel to carry out repeated detection, reduce detection error rate, and the face is detected by detection camera at entrance, when there is dangerous personnel with dangerous cutter or detect that the personnel escape, personnel can be detected in shell, limit component is used to limit and stop rotating to blocking cross bar, personnel is locked in shell, prevent personnel escape or use cutter to suddenly rise and hurt person.
Owner:GUANGDONG MAIDEN SAFETY EQUIP CO LTD

Ultrahigh-voltage constant-voltage clamping emission system for electrical source transient electromagnetic method

The invention discloses an ultrahigh-voltage constant-voltage clamping transmitting system for an electrical source transient electromagnetic method, and belongs to the technical field of ultrahigh-voltage constant-voltage clamping. Comprising a main power supply, an auxiliary power supply, a clamping capacitor, a main switch bridge circuit, a clamping switch, a current sampling module, a peak holding module, a comparator and a controller. According to the invention, the waveform quality of the high-power electromagnetic transmitter can be effectively improved, and the transmitting performance is improved from two aspects of a rising edge and a falling edge. Development of a near-source electromagnetic method including SOTEM is promoted, and more powerful technical support is provided for a deep prospecting strategy.
Owner:DONGFANG JINGYI (BEIJING) TECH CO LTD

Muzzle arc energy and mass center spatio-temporal evolution analysis method and system

The invention discloses a muzzle arc energy and mass center spatio-temporal evolution analysis method and system, and relates to the technical field of muzzle arc analysis, and the method comprises the steps: building an electromagnetic track launch muzzle arc simulation experiment platform, and obtaining a muzzle arc image through a high-speed photographing system; an arc contour image is obtained based on a local adaptive threshold segmentation and morphological gradient extraction algorithm, and the integrity and robustness of arc contour extraction are improved; based on a robust centroid tracking algorithm of multi-connected domain energy fusion and time sequence consistency constraint, a final arc centroid is obtained, and stable positioning and tracking of the arc energy centroid in the full evolution stage are achieved; and quantitatively analyzing the time-domain evolution characteristics of the highlighted area of the muzzle arc and the law of the spatial motion trail of the mass center of the highlighted area based on the muzzle arc images at different muzzle speed. An effective means is provided for quantitative characterization of a bore port arc, and an experimental basis and a theoretical reference are provided for optimization of a bore port structure, anti-ablation design, regulation and control of emission working conditions and the like of an electromagnetic emission system.
Owner:SHANDONG UNIV

Vehicle-mounted electromagnetic propulsion remote fire extinguishing device

ActiveCN224071023UElectromagnetic launchersFire rescueElectromagnetic propulsionElectric generator
The utility model discloses a vehicle-mounted electromagnetic propulsion remote fire extinguishing device, which belongs to the technical field of fire fighting equipment and comprises a vehicle body with a chassis, and a plurality of support legs are distributed on the outer edge of the chassis; the supporting leg comprises a horizontal telescopic part and a vertical telescopic part, the horizontal telescopic part comprises an outer sliding barrel and an inner sliding barrel, and the inner sliding barrel is connected with a first driving assembly for driving the inner sliding barrel to move; the vertical telescopic part comprises a bottom foot, a ball head rotationally connected with the bottom foot is arranged on the bottom foot, the ball head is connected with a second driving assembly for driving the ball head to move, and the second driving assembly is fixed to the inner sliding barrel; the electromagnetic emission assembly, the pulse power supply and the generator are all arranged on the chassis; the pulse power supply is connected with the electromagnetic emission assembly. The generator is connected with the pulse power supply and the electromagnetic emission assembly. The chassis can bear the electromagnetic emission assembly, the pulse power supply and the generator, the pulse power supply and the generator guarantee that the electromagnetic emission assembly provides electric energy, the supporting legs can provide supporting force for the chassis, and recoil force can be stably borne.
Owner:SHANDONG HUATE MAGNET TECH CO LTD

Strong electromagnetic protection design method for electronic warfare unmanned aerial vehicle

The invention discloses a strong electromagnetic protection design method for an electronic warfare unmanned aerial vehicle, and relates to the technical field of electromagnetic protection, electromagnetic interference and electromagnetic compatibility. Establishing an electromagnetic simulation model of the unmanned aerial vehicle and the electronic warfare load, and simulating the electromagnetic environment of the key position; distributing electromagnetic protection indexes of the electronic equipment according to the electromagnetic environment simulation result; front door protection design and rear door protection design are carried out on the equipment level, and comprehensive radio frequency management is carried out on the system level; and carrying out equipment electromagnetic compatibility test verification and full-system electromagnetic compatibility test verification, and finally ensuring compatible work of the unmanned aerial vehicle and the electronic warfare load. The invention provides a top-down strong electromagnetic protection design method for solving the electromagnetic compatibility problem caused by strong electromagnetic interference task loads such as a communication electronic warfare system and a radar electronic warfare system carried by the unmanned aerial vehicle, and the electromagnetic compatibility of the system is improved.
Owner:四川腾盾科技有限公司

System for high-throughput data measurements of single synapses

Techniques for measuring single synaptic signals under varying experimental conditions include controlling a video recording microscope to capture, at multiple different times, a first imaged area in a sample holder as a video frame when the sample holder is disposed on a stage and holds a sample of neuronal tissue combined with at least one fluorophore that emits a corresponding electromagnetic wavelength in a synapse during synaptic activity. At least one synaptic region of interest is determined based on a group of pixels in the first imaged area that record electromagnetic emissions from the fluorophore at the different times. An ordered time series of emission intensity is recorded in each of the synaptic region of interest. Peak emission intensity values in the time series are corrected for transmitter label transients. The ordered time series with corrected peak emission intensity values are stored in a data structure with a standard format.
Owner:UNIV OF MARYLAND

System and method of persistent passive surveillance for the detection and classification of multi-modal intrusions through temporal correlation of mechanical and electromagnetic signals

UndeterminedES3072869A1Frequency spectrumRadio frequency
The invention describes an unattended surveillance node and a method for identifying signal-emitting intruders across multiple physical domains. The system uses a hierarchical triggering architecture where mechanical disturbance sensors (acoustic and seismic) operate as low-power logic triggers. Upon detecting a mechanical signature matching an intrusion profile, the system activates a wide-spectrum radio frequency (RF) analysis. The key innovation lies in a correlational fusion engine that validates the intrusion only if there is a rhythmic or spectral match between the mechanical pressure fluctuations and the detected electromagnetic emissions, allowing the classification of the source (biological, mechanical, or electronic) with high immunity to environmental false alarms.

Multi-source electromagnetic matrix aircraft take-off and landing system and waste heat utilization and building integration method thereof

The invention relates to a multi-source electromagnetic matrix aircraft take-off and landing system and a waste heat utilization and building integration method thereof, and belongs to the technical field of aircraft take-off and landing. The system comprises at least three electromagnetic emission units which are arranged in a space array, and each electromagnetic emission unit comprises an independent controllable excitation coil; the central controller is used for independently adjusting current parameters of each electromagnetic emission unit; the at least three electromagnetic emission units act together to form at least four independent and controllable electromagnetic stress action points in a predetermined space area. The system comprises a building facade integration system, a waste heat recovery system and a military application system (space debris cleaning and aerospace vehicle launching). The system has the multiple advantages of high control dimension, high magnetic field intensity, low cost, mobility, building embeddability, comprehensive energy utilization, military and civilian dual-purpose, military defense value and the like, and can be used as a general take-off and landing infrastructure in the fields of urban air traffic, military aviation, spaceflight launching, military defense and the like.
Owner:YUTIANCHI ELECTROMAGNETIC TECHNOLOGY (QINGDAO) CO LTD

High-current flexible conductive circuits with connectors

A flexible conductive assembly includes a flexible shielded high-current circuit having first and second circuit portions, each with conductive layers and an electromagnetic shield. Contacts are mechanically and electrically coupled to the conductive layers and extend into a connector housing. The housing incorporates electromagnetic shield portions electrically joined to the circuit shields, and a wire seal that protects against environmental ingress while maintaining electrical isolation. By combining flat conductor layers, integrated shielding, and sealed connector structures, the assembly provides a compact, lightweight, and reliable flexible shielded circuit for transmitting high currents with reduced electromagnetic emissions.
Owner:CELLINK CORP

Surgical robot end tool detection system, method and device and computer equipment

The invention relates to a system, method, device and equipment for detecting an end tool of a surgical robot. The normal use of the end tool and the recognition accuracy of an installation state can be considered. The system comprises a surgical trolley, a mechanical arm, a tail end tool, an electromagnetic emission source, a first magnetic beacon, a second magnetic beacon and a controller. The controller is used for: a controller; detection of the pose relationship between an electromagnetic emission source and a first magnetic beacon, detection of the actual pose relationship between the electromagnetic emission source and a second magnetic beacon, obtaining of the pose relationship between a mechanical arm and the first magnetic beacon determined according to a calibration relationship, and the pose relationship between the second magnetic beacon and the mechanical arm when an end tool is correctly installed, and the position according to the pose relationship and the position and calculating the theoretical pose relationship between the electromagnetic emission source and the second magnetic beacon according to the pose relationship, and obtaining the installation state of the end tool according to the actual pose relationship and the theoretical pose relationship.
Owner:WUHAN UNITED IMAGING HEALTHCARE SURGICAL TECH CO LTD

Bionic camouflage briefcase with electromagnetic emission function

The invention discloses a bionic camouflage briefcase with an electromagnetic emission function, the bionic camouflage briefcase comprises an outer bionic structure, a middle layer and an inner layer structure, the outer bionic structure comprises a rotatable handle and a layered shell, and the handle is internally provided with a firing button, an emission mode selection button and a fingerprint unlocking device; the inner layer control area comprises a laser rapid aiming device; the middle layer comprises a pulse transmitting device and a pulse energy storage device, the pulse transmitting device is composed of multiple stages of Helmholtz coils in an array mode, the pulse energy storage device is composed of multiple pulse capacitors in an array mode, the pulse capacitors and the multiple stages of Helmholtz coils are connected in parallel to provide transient electric energy, and a transmitting tube is arranged on one side of each stage of Helmholtz coil; unification of camouflage and functionality is realized, the concealment is high, and the exposure risk is reduced; and a multiple safety control mechanism is adopted, so that false triggering and unauthorized use are prevented.
Owner:HUNAN HIGH PRECISION ELECTRICAL EQUIP CO LTD

Fluid detection

A material level detection device for detecting a material level includes a cable or transmission line having a coaxial cable and an electromagnetic transmitter and receiver arrangement connected or connectable to the cable or transmission line. The cable or transmission line acts as an antenna and includes an inner conductor and an outer conductor having a plurality of apertures or slots provided in a spaced relation along at least part of a length of the outer conductor. The inner conductor is provided within the outer conductor. The cable or transmission line is configured as a radiating cable and / or a leaky feeder, or leaky cable or hybrid of a leaky cable with a standard / nonleaky cable. The transmitter and receiver arrangement is connected or connectable to the inner conductor.
Owner:WELLDATA (SUBSURFACE SURVEILLANCE SYSTEMS) LTD

Bird body launching and separating device applied to multi-stage electromagnetic coil

The invention belongs to the technical field of electromagnetic emission, and particularly relates to a bird body emission and separation device applied to a multistage electromagnetic coil. According to the technical scheme, the bird body launching and separating device applied to the multi-stage electromagnetic coil comprises an acceleration part gun barrel, a braking part gun barrel, a speed buffering part gun barrel, an impact-buffering structure and a magnetic induction cartridge case, and the acceleration part gun barrel, the braking part gun barrel and the speed buffering part gun barrel are sequentially connected together through flanges to form an integral gun barrel; the impact-buffering structure is installed at the end of the gun barrel of the speed buffering part, and the bird body is installed in the magnetic induction cartridge case and is launched and separated through the whole gun barrel. According to the bird body launching and separating device applied to the multistage electromagnetic coil, high-speed stable launching of the bird body can be achieved, and the bird body is safely separated from the sabot.
Owner:TAIHANG LABORATORY LIAONING RESEARCH CENTER +1

Electromagnetic driving device based on staggered sheet structure spiral stepping motor

The invention relates to an electromagnetic driving device based on a staggered sheet structure spiral stepping motor, and belongs to the technical field of portable electromagnetic emitters. The shell, the motor stator and the emission structure are sequentially arranged from outside to inside, one end of the emission structure is provided with the head structure, and the shell and the motor stator jointly serve as a single-section pipeline of the electromagnetic driving device. According to the invention, the hybrid spiral stepping motor with the staggered sheet structure is creatively improved and is applied to the portable electromagnetic emitter; the spiral motor can enable the launching structure to rotate, the launching structure can carry objects such as a fire extinguishing device, and the shooting precision and distance are improved through rotation to improve the fire extinguishing efficiency.
Owner:HARBIN INST OF TECH

Multi-modal combustion interruption system with adaptive electromagnetic emission

A multi-modal combustion interruption system comprises a detection subsystem configured to identify combustion events, an electromagnetic emission subsystem having pulsed energy source and directional emission structure, a control processor implementing adaptive modulation based on measured combustion response, and a safety enforcement subsystem configured to control emission activation based on presence detection. The system may be configured in various modes from baseline electromagnetic emission through enhanced configurations incorporating optional ionization enhancement, particle generation, and acoustic energy subsystems. Adaptive modulation enables parameter selection based on measured combustion response rather than predetermined values. The modular architecture enables configuration selection based on deployment type and application requirements. Fixed installations may utilize grid power for industrial facility protection. Mobile platforms may employ onboard power for emergency response or wildfire intervention. Configuration selection may consider environmental compatibility including omission of particle generation for water-sensitive equipment environments or incorporation of multiple enhancement subsystems for demanding applications.
Owner:KORDLOU HOSSEIN