1037 results about "Coaxial line" patented technology

The invention discloses a UPS (Uninterrupted Power Supply) parallel operation redundancy system and a control method thereof, and relates to the field of UPS, the UPS parallel operation redundancy system comprises a plurality of groups of UPS modules, a plurality of groups of UPS module parallel links, a monitoring unit, a control unit and a switching unit; voltage sampling points of each group of UPS modules are connected with the AD conversion module of the monitoring unit through a double-shielding coaxial line, the control unit is connected with the monitoring unit through a PCIe bus, and the switching unit receives signals output by the control unit through an optical fiber channel. Through a multi-factor coupling mechanism of the dynamic redundancy capacity distribution model, the temperature correction index and the time attenuation factor are deeply fused, real-time dynamic optimization of UPS module load distribution is realized, and performance attenuation and local overload in a high-temperature environment are effectively inhibited; and through the combined criterion of the historical fault integral and the instantaneous over-threshold, the cooperative adaptive capacity of the system to the progressive fault and the sudden load fluctuation is improved.

The invention discloses a power battery thermal runaway fault detection method and system based on multi-source parameters, and belongs to the technical field of battery management, and the method comprises the steps: inputting a high-frequency signal generated by a signal generator to a positive electrode feed point of a battery cell, connecting a coaxial line to a positive electrode, and grounding a negative electrode to form a grounding loop; the collected dendritic crystal reflection signals are analyzed, a quantitative correlation model is established, the growth condition of dendritic crystals is analyzed according to the quantitative correlation model, and preliminary early warning is carried out; electrochemical parameters and auxiliary parameters of the battery cell are collected, and cross validation is carried out on the electrochemical parameters and the auxiliary parameters and preliminary early warning of dendritic crystals; and establishing a dynamic risk and grading response mechanism, dividing the risk into different grades, and setting corresponding response measures. In the implementation process of the technical scheme provided by the invention, by combining dendritic crystal growth prediction and electrochemical parameter analysis, accurate monitoring of the internal state of the power battery is realized, the timeliness and accuracy of thermal runaway early warning are effectively improved, and safe and stable operation of a battery system is ensured.

The invention discloses a method for improving fusion plasma ion cyclotron heating efficiency, and belongs to the technical field of magnetic confinement fusion. The method comprises coupling use of an ion cyclotron antenna and a helical wave antenna, the ion cyclotron antenna is installed in a Tokamak vacuum chamber, is connected with an external radio frequency power supply through a coaxial line, and is used for exciting an ion cyclotron frequency band electromagnetic wave to heat plasma; and the helical wave antenna is arranged at a Tokamak window adjacent to the ion cyclotron antenna, is connected with a radio frequency power supply through a coaxial line or a rectangular waveguide, and is used for exciting a helical wave to increase the plasma density of a scraping layer and improve the accessibility of the ion cyclotron wave. The plasma is excited through the spiral wave antenna, so that the density of the scraping layer is improved, the coupling efficiency of the ion cyclotron wave and the plasma is improved, and technical support is provided for application of ion cyclotron heating in future high-parameter Tokamak.

The invention discloses a line buckling device for mobile phone line installation, and relates to the technical field of mobile phone assembly equipment, and the line buckling device comprises a support main body, and a feeding mechanism, a coaxial line carrying mechanism, a mobile phone shell conveying mechanism, a coaxial line adjusting mechanism, a coaxial line buckling mechanism and a transfer mechanism which are arranged on the support main body, the mobile phone shell with the wire clamping groove is stopped after being conveyed forwards to a corresponding position by the mobile phone shell conveying mechanism; meanwhile, the material clamping jaw clamps the coaxial line in the material hopper and puts the coaxial line into the belt conveying mechanism, then the coaxial line carrying clamping jaw clamps the coaxial line on the belt conveying mechanism and sends the coaxial line into the coaxial line adjusting mechanism, and then the coaxial line buckling mechanism clamps the two ends of the adjusted coaxial line and installs the coaxial line in a mobile phone shell with a line clamping groove. And finally, the mobile phone shell provided with the coaxial line is transferred to the next machining step through the transferring mechanism. Compared with the mode that the two ends of the coaxial line are manually buckled into the line clamping grooves in the mobile phone shell, the working efficiency can be improved.

The embodiment of the invention discloses a signal switching device and a test system. The signal switching device comprises a coaxial cable input port, a decoupling filter circuit and a media signal output port. The input end of the decoupling filter circuit is connected with the coaxial cable input port, and the alternating current output end of the decoupling filter circuit is connected with the media signal output port; the decoupling filter circuit is used for decoupling the received coupling signal to generate an alternating current component and a direct current component, the alternating current component is a media signal, and the direct current component is a power component; and the media signal output port is used for outputting the alternating current component decoupled by the decoupling filter circuit. According to the device provided by the invention, the DC component in the transmission coupling signal in the coaxial cable can be decoupled through the decoupling filter circuit, so that the test process is simplified, and the test cost is reduced.

The invention provides a wide-axial-ratio circularly polarized antenna, and relates to the technical field of antennas, and the antenna comprises a dielectric substrate, and the edge of the dielectric substrate is uniformly provided with metalized via holes; the radiation patch covers the upper surface of the dielectric substrate, and a first circular gap is formed in the middle of the radiation patch; the feed network is located on the lower surface of the dielectric substrate; the metal cover comprises a metal back cavity, the metal cover covers the bottom of the feed network and the bottom of the dielectric substrate, and the feed network is located in the metal back cavity; the radio frequency connector passes through the dielectric substrate and the radiation patch and is welded on the upper surface of the radiation patch; one end of the coaxial cable is connected to the lower end of the radio frequency connector, and the other end of the coaxial cable penetrates through the metal back cavity and is connected with the metal cover; the invention is used for solving the technical problems of low gain, narrow axial ratio beam width, complex design and manufacture and overlarge antenna size of the existing circularly polarized antenna.

The invention provides a circularly polarized antenna based on an artificial magnetic conductor and electronic equipment, and relates to the technical field of wireless communication. The circularly polarized antenna is composed of a coaxial line, a first dielectric substrate, a second dielectric substrate and a grounding plate, the first dielectric substrate, the second dielectric substrate and the grounding plate are arranged from top to bottom, the first dielectric substrate, the second dielectric substrate and the grounding plate are parallel and mutually spaced, an upper-layer radiation unit is printed on the upper surface of the first dielectric substrate, and a lower-layer radiation unit is printed on the lower surface of the first dielectric substrate. An outer conductor of the coaxial line is connected with the lower-layer radiation unit, an inner conductor of the coaxial line penetrates through the first dielectric substrate and is connected with the upper-layer radiation unit, a plurality of rows and columns of metasurface units are printed on the upper surface of the second dielectric substrate, the metasurface units comprise multiple types, and the multiple types of metasurface units respectively have different shapes. Therefore, the bandwidth and the profile height of the circularly polarized antenna are well considered, and the performance of the circularly polarized antenna is better.

The application provides a sound amplification sound column with adjustable vertical direction. The sound column comprises multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, a sound box connecting mechanism, and a sound column direction adjusting mechanism. The sound box comprises a box with a trapezoidal vertical section and a coaxial cylindrical wave mid-high module installed on the panel of the box. The coaxial cylindrical wave mid-high module comprises a midrange horn, a high-frequency module, and a midrange phase plate. The high-frequency module is embedded in the midrange phase plate, and the midrange phase plate is placed on the midrange horn. The sound column is composed of multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, and the curvature of the cylindrical wave is accurately controlled through the connecting mechanism and the adjusting mechanism to realize continuous adjustment of the vertical direction.

The invention discloses a multi-mode sensing manipulator system based on flexible electronic skin, an integration process and a test method, and the multi-mode sensing manipulator system based on the flexible electronic skin comprises a flexible electronic skin sensor attached to a manipulator; the flexible electronic skin sensor comprises a flexible sheet and a liquid alloy network arranged in the flexible sheet, the liquid alloy network comprises an SSPP structure and a piezoresistive sensing structure located on the periphery of the SSPP structure, and the SSPP is a simulated surface plasmon; the piezoresistive sensing structure is connected with the signal processing circuit through a flexible wire bar and transmits a piezoresistive signal to the processor; the SSPP structure is connected with the SDR module through a coaxial line and is connected with the processor. According to the multi-mode sensing manipulator system based on the flexible electronic skin, the integration process and the testing method, the functions of multi-dimensional force feedback, substance penetrating type sensing and dynamic curved surface adaptation are achieved.

A multi-tap distribution box for connection to a main coaxial line carrying high frequency and alternating current power signals, the multi-tap distribution box comprising a make before break jumper that ensures that connection between first and second main line coaxial connectors in the box is not interrupted when a cover of the box is removed.

The invention relates to a coaxial line transformer-based power synthesis circuit and synthesizer, which comprises an impedance reducing sub-circuit and an impedance increasing conversion sub-circuit, and is characterized in that the output end of the impedance reducing sub-circuit is connected with the input end of the impedance increasing conversion sub-circuit; the input end of the impedance reducing sub-circuit is constructed as the input end of the power synthesis circuit, and the output end of the impedance increasing conversion sub-circuit is constructed as the output end of the power synthesis circuit; the impedance reducing sub-circuit and the impedance increasing conversion sub-circuit comprise coaxial line magnet ring transformers, coaxial lines penetrate through magnet rings to form the coaxial line magnet ring transformers, inner conductors of the coaxial lines serve as primary coils of the transformers, and outer conductors of the coaxial lines serve as secondary coils of the transformers. The impedance reduction sub-circuit is used for performing power synthesis and impedance reduction through the turn ratio of the coaxial line magnet ring transformer, and the impedance rising conversion sub-circuit is used for impedance matching and power transmission optimization so as to convert a medium-low impedance value back to a standard impedance value required by a load and ensure that the maximum power is transmitted to the load.

The invention discloses a millimeter wave end-fire horizontal polarization broadband wide-angle scanning phased antenna array and equipment. The array comprises a lower-layer metal surface, a middle metal surface, an upper-layer metal surface, metal through holes, metal blind holes and a feed port, a radiator of the antenna array is composed of rectangular annular patches which are arranged at the front ends of an upper-layer metal surface and a lower-layer metal surface and are provided with concave U-shaped structures, and opening gaps which are etched at the central positions of the front ends of the upper-layer metal surface and the lower-layer metal surface of the substrate integrated waveguide; a plurality of antenna units in the antenna array feed independently through a plurality of feed ports and regulate and control an excitation phase; the metal blind hole is connected with the substrate integrated coaxial line; the substrate integrated coaxial line is composed of a substrate integrated waveguide and a transmission line located on a middle metal face. The substrate integrated waveguide is composed of two layers of dielectric substrates, a bonding layer, an upper-layer metal surface, a lower-layer metal surface and metal through holes. According to the invention, the broadband and wide-angle phase control scanning performance of the array beam in the plane where the array is located is realized.

The invention belongs to the technical field of imaging, and provides an imaging device and an operation method thereof, and the imaging device comprises a base which is provided with a first light-transmitting hole and a second light-transmitting hole which are coaxially arranged; the rotating disc is rotationally arranged in the base, a plurality of first sliding grooves which are distributed in the circumferential direction at intervals are formed in the rotating disc, each first sliding groove is provided with a first sliding block, the first sliding blocks can linearly move in the first sliding grooves in a reciprocating mode, and a plurality of optical filters which are linearly distributed at intervals are arranged on the first sliding blocks; wherein the first sliding groove is provided with a third light-transmitting hole, the third light-transmitting hole can be coaxial with the first light-transmitting hole and the second light-transmitting hole, and each light filter located on the first sliding block can move to the third light-transmitting hole and cover the third light-transmitting hole. By the adoption of the structure, a plurality of different optical filters can be located on the same rotating disc, the different optical filters can be switched according to experiment requirements, operation is easy and convenient, and the automation degree is high.

The invention discloses a miniaturized circular patch antenna loaded with four symmetrical L-shaped grooves, and relates to the technical field of wireless communication. The antenna comprises a circular patch, a dielectric substrate, a metal grounding plate and a coaxial line. The circular patch clings to the upper surface of the dielectric substrate, and the metal grounding plate is arranged on the lower surface of the dielectric substrate; four L-shaped grooves are formed in the circular patch, the geometric dimensions of the four L-shaped grooves are the same, and the four L-shaped grooves are symmetrically distributed around the circle center; the circular patch adopts a coaxial line for feeding, the inner conductor is connected to the circular patch, and the outer conductor is connected with the metal grounding plate. The symmetrical L-shaped grooves are etched in the circular patch, so that the resonant frequency of the antenna is effectively reduced, and the electrical size of the antenna is reduced; the antenna keeps relatively high gain and radiation efficiency, and has the advantages of simple structure and excellent performance.

The utility model provides a coaxial line automatic weaving supporting device and a connector processing production line. The device comprises a mounting platform; the chopping and pressing assembly is arranged on the mounting platform, a machining through hole is formed in the chopping and pressing assembly, the coaxial line penetrates through the machining through hole, and the chopping and pressing assembly can cut the coaxial line, so that part of the braid layer is cut off, and part of the inner core is exposed; the knitting pushing assembly is arranged on the mounting platform; the knitting pushing assembly comprises a sleeve and an air blowing unit arranged around the sleeve. The inner wall of the sleeve can drive part of the cut-off braid layer to move in the direction away from the inner core, and the air blowing unit can blow air to the braid layer while the braid layer moves. According to the device, the coaxial line can be automatically expanded, the inner core and the braid layer can be expanded, and after the braid is chopped, pressed and loosened, the braid layer can be quickly and uniformly expanded through the synergistic effect of the sleeve and the air blowing unit, so that the braid is treated in place in one step, and the product short-circuit scrapping caused by the residual braid wire is reduced.

The invention discloses a shield tunnel ground penetrating radar one-transmitting-multi-receiving antenna array advanced detection system, which comprises a terminal processor and a one-transmitting-multi-receiving antenna array, the terminal processor is connected with the one-transmitting-multi-receiving antenna array through a coaxial cable, the one-transmitting-multi-receiving antenna array comprises a transmitting antenna and a plurality of receiving antennas, and the transmitting antenna is connected with the receiving antennas. The shield cutter heads are arranged in the radial direction of the shield cutter head, are fixed on the same radius of the shield cutter head and cover the radius of the whole shield cutter head; the shield cutterhead rotates to cut a front soil body, the terminal processor controls the one-transmitting-multiple-receiving antenna array to synchronously carry out advanced detection, the one-transmitting-multiple-receiving antenna array rotates along with the shield cutterhead to detect a circle, the transmitting antennas radiate electromagnetic waves once at fixed angle intervals, and the multiple receiving antennas record reflected electromagnetic echo signals of a front stratum once at the same time. And the one-transmitting multi-receiving antenna array follows the shield tunneling machine to gradually tunnel so as to detect obstacles in the whole tunnel excavation section. The method has the advantages of large detection range, high detection efficiency and clear detection result.

The invention belongs to the technical field of near-field imaging, and particularly relates to a microwave and millimeter wave near-field subsurface microscopic imaging device and method based on signal interference, and the device comprises a vector network analyzer, a signal separation device, a phase adjustment device, a semi-steel coaxial line, a displacement platform, and an industrial control computer. The vector network analyzer comprises a signal separation unit, a frequency synthesis source, a first receiver and a second receiver, wherein the frequency synthesis source, the first receiver and the second receiver are respectively connected with the signal separation unit and used for generating microwave and millimeter wave test signals. The signal separation device is respectively connected with the vector network analyzer, the phase adjusting device and the semi-steel coaxial line, and the displacement table is connected with the vector network analyzer through the industrial personal computer; the tail end of the semi-steel coaxial line, which is far away from the signal separation device, is provided with a conical needle tip-shaped near-field probe; and the needle tip of the near-field probe is vertical to the surface of a to-be-detected sample arranged on the displacement table.

The utility model discloses an electric energy meter data acquisition unit, which relates to the field of data acquisition, and is provided with an equipment interface, a communication interface, a communication module, an MCU (Microprogrammed Control Unit), an antenna and a first DCDC (Direct Current to Direct Current) module, the antenna is arranged near the electric energy meter through the coaxial line, the antenna is arranged near the electric energy meter through the coaxial line, the first DCDC module reduces the first voltage into the second voltage and then supplies power to the communication module, the equipment interface transmits data to the MCU through the communication interface, and after the communication module is powered on and the MCU receives the data, the MCU communicates with the electric energy meter through the communication module and the antenna. The influence of the MCU in the electric energy meter data collector on the antenna is greatly reduced, an iron plate does not need to be arranged like a sucker antenna, the appearance is low, and the possibility of being damaged is reduced.

The invention discloses a single-stage cavity type power combiner capable of adjusting output power, the single-stage cavity type power combiner is used for an accelerator high-frequency system power source, the single-stage cavity type power combiner adopts a section of coaxial line resonant cavity folded into an n shape as a main body structure of the combiner, and by increasing the number of branches synthesized at a time, the output power of the combiner can be adjusted. The number of the single-stage cavity type power combiner is equivalent to the number of branches of the multi-stage power combiner, so that the multi-stage power combiner is replaced by the single-stage cavity type power combiner; the single-stage cavity type power combiner comprises a plurality of input coupling structures, an output coupling structure and a coaxial line resonant cavity, the plurality of input coupling structures are divided into two groups and are symmetrically distributed at two ends of the coaxial line resonant cavity shaped like a Chinese character'ji ', and each input coupling structure is directly connected with an output port of each power amplifier unit; when the single-stage cavity type power combiner has a module fault, the coupling between the fault module and the system can be quickly relieved, and the output power of other power amplifier modules is adjusted, so that the overall output power is recovered to be balanced.

The invention discloses a wire harness laser coding system based on CCD camera recognition. The wire harness laser coding system comprises a mechanical arm, a wire harness clamping jaw, a wire harness end clamping unit, a horizontal guide rail, a ccd visual detection unit and a laser coding device. The sides, close to each other, of the two wire harness end clamping units are coaxially provided with two wire harness end insertion ports. The two wire harness clamping jaws are arranged on the displacement mechanical arm, the two wire harness clamping jaws can clamp the positions, close to the two ends, of the target wire harness respectively, and drive the clamped target wire harness to move to the position between the two wire harness end clamping units under the action of the mechanical arm, so that the two ends of the target wire harness are coaxially aligned with wire harness end inserting openings of the two wire harness end clamping units respectively; the two wire harness end clamping units can synchronously move in the extending direction of the horizontal guide rail. Original characters and patterns on the target wire harness are made to deviate from the sight line of the ccd visual detection unit through the ccd visual detection unit, and therefore finally achieved code printing effectively avoids the original characters and patterns on the surface of the wire harness.

The invention discloses an ultra-wideband transition transmission structure loaded with open-circuit branches. The ultra-wideband transition transmission structure comprises a signal conversion plate transition structure and a film probe card transition structure, the signal conversion plate transition structure comprises a first dielectric layer, a coaxial cable, a first signal line, a first upper metal layer arranged on one side of the first dielectric layer and a first lower metal layer arranged on the other side of the first dielectric layer, and the first dielectric layer is provided with a plurality of first metal via holes used for connecting the first upper metal layer and the first lower metal layer. The coaxial cable is arranged on the first dielectric layer, an outer conductor of the coaxial cable is connected with the first upper metal layer, the first signal line is arranged on the first dielectric layer and connected with an inner conductor of the coaxial cable, the first lower metal layer comprises a first metal sheet and a second metal sheet, and the first metal sheet and the second metal sheet define a first groove. The first groove coincides with the central axis of the first signal line. The film probe card transition structure is connected with the first signal line and the first upper metal layer. According to the scheme, the bandwidth is improved, and the performance requirement of low loss is met.

The invention discloses a photoelectric integrated landslide slip monitoring system and method. The system comprises a photoelectric integrated cable used for being lowered into a monitoring drill hole drilled in a landslide mass, and a heavy hammer facilitating the photoelectric integrated cable to be kept vertical in the lowering process is hung at the bottom of the photoelectric integrated cable. The photoelectric integrated cable comprises a copper inner conductor, an insulating layer, an aluminum tube and an outer protective layer which are coaxially arranged from inside to outside and form a coaxial cable, a strain optical fiber and a temperature measuring optical fiber are arranged in the insulating layer in parallel and separated from the inner conductor, the inner conductor, the strain optical fiber and the temperature measuring optical fiber are fixed through insulating filler filled in the insulating layer, the aluminum tube is wrapped outside the insulating layer, and the outer protective layer is wrapped outside the aluminum tube. The aluminum tube is wrapped by an outer protective layer, and cables respectively connected with the inner conductor, the strain optical fiber and the temperature measurement optical fiber are led out from the top of the photoelectric integrated cable and are respectively connected with a TDR channel, an optical fiber strain channel and an optical fiber temperature measurement channel of the multi-channel demodulator. According to the invention, the position and displacement angle information of slippage deformation of the landslide can be accurately obtained, and the method is rapid and accurate.

The invention relates to the technical field of metal pipe machining, in particular to a cutting device for a metal pipe for a refrigeration circulating pipe. The device comprises at least one metal pipe support and a cut-off support on the coaxial line of the metal pipe support. A cutting-off platform is installed on the cutting-off support, a pipe clamping seat is installed on the side, close to the metal pipe support, of the cutting-off platform, a rotating head for driving a metal pipe to rotate is installed on one side of the pipe clamping seat, and a laser cutting-off head is further installed on the cutting-off support. According to the metal pipe cutting-off device for the refrigeration circulating pipe, a basic supporting structure is formed by the metal pipe support and the coaxially-arranged cutting-off support, the cutting-off platform installed on the cutting-off support provides a stable working face for cutting operation, and the pipe clamping base arranged on the side, close to the metal pipe support, of the cutting-off platform can firmly fix a pipe to be machined; and a rotating head arranged on the side of the clamping base is matched to achieve circumferential rotating positioning of the pipe, and meanwhile, a laser cutting-off head arranged on the top of the cutting-off support can conduct high-precision non-contact cutting on the pipe in the clamped state.

The invention relates to a broadband high-gain 5G base station antenna based on a metasurface. The broadband high-gain 5G base station antenna comprises a system floor, a first low-frequency auxiliary unit, a second low-frequency auxiliary unit, a first high-frequency auxiliary unit, a second high-frequency auxiliary unit, a center unit and a feed network, the first low-frequency auxiliary unit, the second low-frequency auxiliary unit, the first high-frequency auxiliary unit and the second high-frequency auxiliary unit are distributed on the first surface of the system floor in an array manner and surround the central unit; the central unit comprises a metasurface layer and a dual-polarization unit, the dual-polarization unit is arranged on the first surface of the system floor, and the metasurface layer is fixed on the dual-polarization unit; the feed network is arranged on the second surface of the system floor and is connected with the first low-frequency auxiliary unit, the second low-frequency auxiliary unit, the first high-frequency auxiliary unit, the second high-frequency auxiliary unit and the central unit through coaxial lines. The antenna has the advantages of wide frequency band, high average gain, high aperture efficiency and high isolation.

The invention discloses a millimeter wave circularly polarized wide-angle scanning antenna based on inclined axial ratio wave beams. The antenna comprises a dielectric substrate and a plurality of completely identical antenna units with inclined axial ratio wave beams, wherein the antenna units are linearly arranged on the dielectric substrate; the antenna unit comprises a metal radiation patch, a metal floor, a first feed probe and a second feed probe; the metal radiation patch is printed on the upper surface of the dielectric substrate, and the metal floor is arranged on the lower surface; the metal radiation patch is composed of a circular metal radiation patch and a circular ring metal radiation patch; a notch annular gap is formed in the circular metal radiation patch, and two pairs of rectangular gaps are formed in the periphery of the circular metal radiation patch; two pairs of rectangular gaps and a rectangular branch knot are arranged on the circular ring metal radiation patch; the feed probe passes through the dielectric substrate and is respectively connected with the circular metal radiation patch and the circular ring metal radiation patch, and a signal excites the metal radiation patches for radiation in a coaxial line feed mode. The invention has the advantages of wide-angle scanning, low profile, simple structure and the like.

The utility model discloses a microparticle detection device which comprises a shell, an optical detection cavity and two independent air channels penetrating through the optical detection cavity are arranged in the shell, a fan is further arranged in the shell and used for achieving gas exchange between the independent air channels and the outer side of the shell, and the two independent air channels are arranged side by side at intervals. The two independent air channels located in the optical detection cavity are each provided with a fracture, a light source is arranged in the interval between the two independent air channels, a photosensitive device and a lens are arranged on the two sides of each fracture respectively, the lenses are arranged close to the light sources, and the fractures, the lenses and the light sources are coaxially arranged. The battery thermal runaway early warning device has the advantages of being simple in structure, high in response speed, high in detection reliability, high in detection precision and capable of conducting timely early warning on the early stage of battery thermal runaway.

The utility model discloses a heating assembly and microwave cooking equipment, the heating assembly is used for the microwave cooking equipment, the heating assembly comprises an electric heating piece and a choke structure, the electric heating piece is suitable for being arranged in a microwave cooking cavity of the microwave cooking equipment and is provided with a wire, and the choke structure is arranged on the electric heating piece. The wire is suitable for extending out of the microwave cooking cavity and used for being electrically connected with a power line of the microwave cooking equipment, the choke structure comprises an outer sleeve and an inner sleeve, the outer sleeve is arranged on the outer side of the inner sleeve in a sleeving mode at intervals, a wire passing channel extending in the axial direction is formed in the inner sleeve, and the wire passing channel is used for allowing the wire to penetrate through. Therefore, the choking structure is arranged, the choking structure is equivalent to a coaxial line short-circuiting device and has a coaxial shielding characteristic, so that the choking structure plays a role in shielding microwaves, the amount of microwaves led out from the microwave cooking cavity through the electric heating piece and the wire is reduced, the microwave leakage amount of the microwave cooking equipment is reduced, and the service life of the microwave cooking equipment is prolonged. And the use safety of the microwave cooking equipment is improved.

The invention discloses a 16-in-one high-power combiner working in a radio frequency band, and belongs to the technical field of fusion radio frequency heating. The invention comprises a coaxial input hard feeder line, a radial transmission line (RTL), a gradient impedance matching coaxial line and a coaxial output hard feeder line. The physical size is designed through theoretical calculation, electromagnetic field distribution is optimized through simulation, 16 radio-frequency signal input ports are designed through radial symmetric topology, a radial transmission line serves as a main synthesis path of radio-frequency signal source power, the power input by the 16 radio-frequency signal source ports is subjected to one-step efficient synthesis in the center of the radial transmission line, and the radio-frequency signal source power is obtained. And the 50-ohm characteristic impedance standard output of the synthesized radio frequency signal power is realized through an impedance matching technology. The sixteen-in-one power combiner designed by the invention has the characteristics of high synthesis efficiency, symmetrical structure, good amplitude and phase consistency, high isolation, low return loss, low reflection loss, simple design structure, easiness in manufacturing and the like.

The invention discloses a wireless energy and analog-digital mixed signal synchronous transmission circuit and method based on a coaxial coil, and relates to the technical field of wireless power transmission. The technical problems that in the prior art, an existing transmission system only considers single digital signal transmission, the requirement for system analog and digital diverse signal mixed transmission is difficult to meet, high quantization errors are generated, and real-time performance and precision are difficult to consider at the same time are solved. According to the technical scheme provided by the invention, the wireless energy and analog-digital mixed signal synchronous transmission circuit based on the coaxial coil comprises a power channel and a communication channel, the power channel comprises a direct-current power supply, an inverter, a compensation circuit I, a power coil, a compensation circuit II and a rectifier; the communication channel comprises a signal modulation part, a signal transceiving circuit, a communication coil, a filter and a demodulation circuit; the signal modulation part comprises an analog signal modulation circuit and a digital signal modulation circuit. The device is suitable for wireless power supply and signal transmission.

The utility model provides a coaxial terminal plug, a signal acquisition circuit and a live-line switching electric energy meter practical training device, the coaxial terminal plug comprises a first coaxial wire core, a second coaxial wire core, a plug connector and a connecting piece, the middle part of the connecting piece is an insulating section, and the upper part and the lower part of the connecting piece are conductive sections; one end of the first coaxial cable core and one end of the second coaxial cable core extend out of the plug connector; the other end of the first coaxial cable core extends to the upper portion of the connecting piece, and the other end of the second coaxial cable core extends to the lower portion of the connecting piece. The signal acquisition circuit comprises the coaxial terminal plug, an MCU microprocessor and a state detection circuit, and the MCU microprocessor is connected with the corresponding coaxial terminal plug through the corresponding state detection circuit. The live switching electric energy meter practical training device comprises a virtual load power supply, a combined junction box and a target electric meter, and further comprises the signal acquisition circuit, and the signal acquisition circuit is used for acquiring the wiring state signal of the tail of the electric meter.