688 results about "Coaxial line" patented technology

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 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 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 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 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 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.

This invention provides a broadband circularly polarized slot antenna for partial discharge detection in high-voltage electrical equipment, comprising a first dielectric substrate, a second dielectric substrate, a coupled feed structure, an annular slotted metal patch, a metal ground, a shorting pin, a metal post, and a coaxial line. The first dielectric substrate is disposed parallel to the upper center of the second dielectric substrate. The coupled feed structure is printed on the upper surface of the first dielectric substrate, the annular slotted metal patch is printed on the lower surface of the first dielectric substrate, and the metal ground is printed on the upper surface of the second dielectric substrate. An annular slot is formed in the center of the annular slotted metal patch, and the coupled feed structure is coupled to the annular slot. This invention can better match the complex electromagnetic environment formed by multiple reflections inside high-voltage equipment, thereby improving the acquisition efficiency and detection reliability of partial discharge signals, thus completely solving the detection blind zone problem caused by the random polarization of discharge signals in traditional linearly polarized antennas.

To provide a converter that can couple a derivative waveguide to a coaxial wire with low loss.SOLUTION: A converter 10 that electromagnetically couples a dielectric waveguide 3 and a coaxial line 2 comprises a shaft-shaped waveguide member 7 made of a dielectric and having a conical shaped part 71 at one end portion in an axial direction, a taper slot antenna 6 disposed to face a conical surface 71a of the conical shaped part 71, a housing 4 that accommodates the waveguide member 7 and the taper slot antenna 6, and a support member 8 that supports the waveguide member 7 with respect to the housing 4, wherein the coaxial line 2 is connected to the taper slot antenna 6 and the dielectric waveguide 3 is connected to the waveguide member 7. The support member 8 contacts a part in a circumferential direction of an outer peripheral surface 7a of the waveguide member 7 to support the waveguide member 7 with respect to the housing 4, and a gap is formed between another part in the circumferential direction of the outer peripheral surface 7a of the waveguide member 7 that is not contacted by the support member 8 and an inner surface 4a of the housing 4.SELECTED DRAWING: Figure 6

The invention belongs to the technical field of microwave antennas, and particularly provides a tight coupling phased array with a tail end unit loaded with asymmetric dipoles. The main structure of the antenna comprises a radiation structure (I) which is composed of frequency selection surfaces which are arranged above folded dipoles and are periodically arranged, dipoles which are symmetrically arranged in a central unit and dipoles which are asymmetrically arranged in an edge unit; and the feed structure II is composed of a gradient microstrip feeder line, a metal floor and a coaxial line. According to the invention, a frequency selective surface is loaded above a folded dipole, a traditional tight coupling phased array is replaced, a heavy dielectric layer is loaded above the dipole, and a 1 * 8 one-dimensional linear array is designed. Besides, by prolonging the length of the folded dipole on the tail end array element, compared with a traditional structure, extra capacitance is introduced under the condition that the height of the array section is not changed, and the problem that the array is difficult to match at low frequency is effectively relieved.

The invention discloses AR glasses, and relates to the technical field of AR glasses, and the AR glasses comprise an optical machine module, an optical lens, and an antenna. The optical lens at least comprises a first area and a second area different from the first area; light emitted by the ray machine module enters the optical lens in the first area; the projection of the antenna on the optical lens is located in the second area; the antenna comprises a metal area, a bonding pad area and a feed coaxial line. The metal area is provided with a gap formed by slotting, and the feed end of the gap is electrically connected to the bonding pad area; at least part of the feed coaxial line is located in the bonding pad area and connected with the feed end, so that the feed end connected with the feed coaxial line enters an open circuit state, namely, the feed coaxial line is directly used as a feed line of the gap, a conventional coupling mode is avoided, the miniaturization design of the bonding pad area is achieved, and the size of the antenna is reduced. Therefore, the bonding pad area, the light machine module and the camera module can be hidden in the glasses frame together, so that the miniaturization requirement of AR glasses is met.

The utility model provides a wave generator assembly tool of a harmonic reducer. The wave generator assembly tool comprises a press-fitting base and a guide shaft arranged on the press-fitting base. The guide shaft comprises a first guide part and a second guide part, the first guide part is used for being connected with the cam, and the cam can slide in the axial direction of the first guide part; the second guide part is sleeved with a guide sleeve, and the guide sleeve can slide in the axial direction of the second guide part. A positioning part protruding in the radial direction is arranged on the peripheral wall of the guide sleeve, and the first guide part, the second guide part and the positioning part are coaxially arranged; the positioning part is used for being connected with the flexible bearing in a sleeving mode, and the peripheral wall of the positioning part is attached to the inner wall of the flexible bearing. In the assembling process, the cam pushes the guide sleeve downwards, the positioning part is made to retreat from the inner ring of the flexible bearing, meanwhile, the cam is extruded into the flexible bearing from the upper portion, in the process, the cam and the flexible bearing are kept coaxial all the time, the assembling requirement of the wave generator is met, secondary deformation of the flexible bearing is avoided, and then the product quality is guaranteed.

The invention relates to the technical field of radio frequency power synthesis, and provides an anti-phase broadband power synthesizer based on a high-permeability material, which comprises four power synthesis input ports, namely a port P2, a port P3, a port P4 and a port P5; an output port, namely a port P1; the five transmission line transformers, namely the transmission line transformer TL1, the transmission line transformer TL2, the transmission line transformer TL3, the transmission line transformer TL4 and the transmission line transformer TL5, all adopt coaxial lines, and the core and the shell of each coaxial line form the transmission line transformer with the ratio of 1: 1 and are all wound on a magnetic core made of a high-permeability material. According to the synthesizer, a high-permeability material is introduced, the natural anti-phase characteristic of the high-power transmission line transformer is utilized, an anti-phase power synthesis network is constructed, and the problems that in traditional broadband power synthesis, the broadband power synthesis difficulty of the frequency band ranging from 9 kHz to 100 MHz is large, and the power capacity is insufficient are solved.

An ultra-wideband end-fire antenna with a common aperture embedded in a metal carrier includes a metal cavity with a coaxial cable compartment on one side. A radiator module is connected to the bottom of the metal cavity via a radiator fixing slot. The radiator module includes a common aperture antenna substrate. A low-frequency radiator is printed on the side of the common aperture antenna substrate closer to the coaxial cable compartment, and a high-frequency radiator is printed on the side farther from the coaxial cable compartment. This invention utilizes a dual-band antenna in a common aperture design to enhance the channel capacity and anti-fading capability of the communication system. At the same time, by achieving the antenna's carrier conformal characteristics, high isolation, and miniaturization, it enriches the antenna's application scenarios and improves the overall performance of the communication system.

The present disclosure provides a ceramic antenna and a preparation method thereof, the ceramic antenna comprising a ceramic substrate in a special shape, and a coaxial line welded on a silver layer printed on the ceramic substrate. The high dielectric plastic ceramic antenna is prepared through the steps of preparing a special ceramic substrate, printing antenna lines, and welding a coaxial line. Compared with the commonly used FPC antenna and LDS antenna, the ceramic antenna has a larger dielectric constant, a smaller antenna size, a lower loss, and a bandwidth basically meeting the WiFi frequency band. The coaxial line is directly welded on the silver layer on the surface of the ceramic, which well meets the connection requirements of a notebook computer network card.

The application relates to the technical field of V2X antennas, in particular to a V2X antenna structure which comprises a first radiation unit, a second radiation unit and a radiation slot unit; the first radiation unit comprises a first radiation branch, a second radiation branch and a feeding branch; the second radiation unit comprises a third radiation branch and a fourth radiation branch; the radiation slot unit is formed by the first radiation branch, the second radiation branch and the fourth radiation branch; and a radio frequency coaxial line comprises an outer conductor and an inner conductor. Compared with the prior art, the application has the advantages that the antenna has good performance on metal surfaces and non-metal surfaces, has the characteristics of small size and low profile, can be applied to metal surfaces, has high antenna gain, is simple to manufacture, has excellent performance, is convenient to install and use, and is easy to popularize.

The application discloses a coaxial line and smart glasses, wherein the coaxial line has two end portions and a coaxial line body connecting the two end portions, the coaxial line body comprises a first body section and a second body section, and the cross section of the first body section is different from the shape and / or area of the cross section of the second body section. The technical scheme of the application aims to provide the possibility for miniaturization of the smart glasses.

The utility model discloses a partial discharge on-line comprehensive monitoring device comprising a device main body, a monitoring host is positioned at a rear position in the device main body, and the monitoring host is provided with a short circuit grounding sensor, a high voltage live sensor, a locking alarm mechanism, an antenna, a grounding wire, a communicator and a working power supply. The high-voltage electrified sensor is connected with a coupling sensor, a coaxial line is connected between the high-voltage electrified sensor and the coupling sensor, the locking alarm mechanism is connected with a power supply input port, an electromagnetic lock and an alarm signal output interface, and the communicator is connected with a shielding line. According to the partial discharge on-line integrated monitoring device of the utility model, a high-voltage sensor matched with an original live display of a ring main unit is used as a front coupling sensor of a pulse partial discharge integrated monitoring instrument, so that partial discharge signals can be rapidly captured, partial discharge types can be accurately analyzed, and partial discharge positions can be accurately positioned.

The invention discloses a device and a method for rapidly detecting the corresponding relation of phased-array antenna channels, and relates to the technical field of phased-array antennae, the device comprises a positioning plate, a signal coupling array, a detection array, an ADC array, a single-chip microcomputer and an LED display array; the positioning plate is fixed above the phased-array antenna through the supporting part, i * j coaxial line mounting holes are formed in the positioning plate, the distance between the mounting holes is consistent with the distance between radiation units of the phased-array antenna, i * j coaxial line openings are formed in the signal coupling array, and the i * j coaxial line openings are matched with the i * j coaxial line mounting holes. The coaxial line openings are in one-to-one correspondence with the phased-array antenna radiation units in position; the detection array is electrically connected with the ADC array and the signal coupling array. The single-chip microcomputer is electrically connected with the ADC array and the LED display array. By controlling the opening of the channels of the phased array one by one, the corresponding relation of the channels of the phased array antenna is reflected through the LED array, the purpose of visualization is achieved, and then whether the corresponding relation of the channels of the phased array antenna is correct or not is rapidly judged.

The utility model discloses a guide structure and a winding device thereof. The guide structure comprises a base, a guide plate and a guide plate, the number of the vertical plates is two, the two vertical plates are symmetrically arranged, and the two vertical plates are arranged on the base; the number of the triangular supporting plates is two, the two triangular supporting plates are symmetrically arranged, and the two triangular supporting plates are arranged between the two vertical plates; each triangular supporting plate is fixedly provided with one rotating shaft, the two rotating shafts are coaxial, and the two rotating shafts are rotationally arranged on the two vertical plates respectively; the number of the guide rollers is three; glass fiber cloth can be conveniently and stably guided, and meanwhile the position of the guide roller can be adjusted.

The application provides a small-sized band-pass filter based on a half-mode resonant cavity, which has excellent band-pass characteristics, and the structure thereof is as follows from top to bottom: an input port, an output port and a dielectric resonant cavity.The input port and the output port are formed by two 50-ohm coaxial lines which are completely same, the outer conductor of the coaxial line is connected with the upper surface of the resonant cavity, and the inner conductor is connected with the cavity body, a signal is coupled into the resonant cavity through the input port, and is transmitted to the outside through the output port after selective filtering.The dielectric resonant cavity is made of a high dielectric constant material, and the structure thereof is a rectangular cavity body which is provided with a cross-shaped gap in the middle and is cut at the corners.The upper surface, the lower surface and the cut surfaces are all covered with a metal layer to form a shielding cavity body so as to reduce external interference.The small-sized band-pass filter based on the half-mode resonant cavity has successfully realized the miniaturization of the equipment under the condition of keeping high band-pass performance, and becomes an excellent choice for base station filters in 5G applications.

A millimeter wave end-fire dual-polarized antenna array disclosed by the present invention comprises two dual-polarized units, each dual-polarized unit comprises a vertical polarization unit and a horizontal polarization unit, the vertical polarization unit is composed of a substrate integrated waveguide, a first metal patch, a second metal patch and a first metal through hole, and the horizontal polarization unit is composed of a second metal patch and a second metal through hole. The horizontal polarization unit is composed of a substrate integrated coaxial line, a dipole and a third metal patch; the rear end of the vertical polarization unit is connected with the substrate integrated waveguide power divider; the substrate integrated waveguide power divider is connected with the substrate integrated waveguide grounding coplanar waveguide; the rear end of the horizontal polarization unit is connected with the substrate integrated coaxial line power divider; the substrate integrated coaxial line power divider is connected with the substrate integrated coaxial line grounding coplanar waveguide; the grounding coplanar waveguide is connected to the coaxial joint for antenna excitation. The antenna has the characteristics of wide working bandwidth, compact structure, stable radiation performance and the like, and has a wide application prospect in millimeter wave wireless communication.

The utility model discloses a new energy automobile battery pack split charging AGV trolley which comprises an AGV trolley body, driving wheels are arranged at the bottom of the AGV trolley body, and a driving system is installed in the AGV trolley body. A bearing platen is installed on the top face of the AGV trolley body, and a lifting system is installed in the AGV trolley body and comprises a lifting telescopic cylinder and a positioning mechanism. The positioning mechanism comprises upper sleeves fixed to the four corners of the bottom face of the bearing platen and lower sleeves fixed to a bottom plate of the AGV trolley body, coaxial telescopic cavities are formed in the upper sleeves and the lower sleeves, positioning shaft rods are installed in the middles of the upper sleeves and the lower sleeves, and the upper ends and the lower ends of the positioning shaft rods are located in the upper telescopic cavities and the lower telescopic cavities correspondingly. When the bearing platen ascends and descends, the positioning shaft rod enables the upper sleeve to ascend and descend coaxially with the lower sleeve all the time, the positioning shaft rod can be hidden in the telescopic cavity when the upper sleeve descends, the positioning lifting height is increased when the upper sleeve ascends, and therefore arrangement in the small longitudinal space of the AGV trolley body can be achieved.

The application discloses a compact high-power multilayer coaxial waveguide power divider, and belongs to the field of high-power mode power distribution. The power divider comprises an upper layer coaxial radial power division structure, a lower layer coaxial radial power division structure and a variable inner diameter coaxial line structure. The upper layer coaxial radial power division structure comprises n upper layer output ports, the lower layer coaxial radial power division structure comprises n lower layer output ports, and the variable inner diameter coaxial line structure is used for introducing part of power of an upper layer coaxial input port input signal into a lower layer coaxial line part, and the remaining power enters an upper layer radial line part. Signals entering the upper layer radial line part are equally divided into n paths of output, and signals entering the lower layer coaxial line part are equally divided into n paths of output through a lower layer radial line part. The application can break through the restriction of the number of radial power division, introduce more power division paths in a limited radial radius, and has the advantages of low loss, high power capacity and more compact structure compared with a single layer radial power division system under the premise of the same number of power division.

The invention provides a novel dual-frequency dual-circularly polarized satellite antenna, and relates to the technical field of satellite antennas. The satellite antenna comprises a ground plane, a single-feed-point coaxial line, a dielectric substrate and a metal patch connected to the dielectric substrate. A gap layer is arranged between the ground plane and the dielectric base. The single-feed-point coaxial line passes through the gap layer and the dielectric substrate so as to be electrically connected with the ground plane and the metal patch. The metal patch comprises a circular patch on the inner layer and a rectangular patch arranged on the outer layer of the circular patch in a sleeving mode. The circular patch is provided with a rectangular groove so as to realize right-handed circular polarization. Two opposite sides of the rectangular patch are respectively provided with a long branch knot and a short branch knot so as to realize left-hand circular polarization. The four corners or the positions close to the four corners of the rectangular patch are electrically connected to the circular patch. The antenna has good dual-frequency coverage, circular polarization characteristic and gain performance in the L and S frequency bands.

The application provides an anti-static antenna and a communication device. The anti-static antenna comprises a dielectric substrate, a coaxial line and a radiator. The radiator is arranged on the dielectric substrate. The radiator comprises a radiation part and a grounding part. The radiator is electrically connected with an inner conductor. The grounding part is electrically connected with a shielding layer. The radiator further comprises an anti-static part which is electrically connected between the radiator and the grounding part. The anti-static antenna provided by the application has the advantage of good anti-static effect.

The application discloses a minimally invasive planar ablation antenna, which comprises a microstrip line, an SICL structure and a radiator; the microstrip line is connected with the SICL structure through a first via hole, and the SICL structure is matched with the radiator through a pi matching network; and the radiator is in a serpentine wiring structure. The application designs a planar ablation needle with a very small cross-sectional area, which is different from an ablation needle based on a coaxial line structure and has the advantage of low cost based on PCB processing. The application proposes a method for constructing a pi matching network in the planar ablation antenna, and directly matches the radiator with the SICL, so that the ablation needle has a free length.

The application provides a dual-frequency focusing ultrasonic transducer, which comprises a shell and sequentially arranged acoustic lens, matching layer, piezoelectric layer and backing layer, the piezoelectric layer comprises piezoelectric wafer I and piezoelectric part II, the piezoelectric part II comprises piezoelectric wafer II and a dematching part, the piezoelectric wafer I and the piezoelectric wafer II are side by side to form a flat upper surface of the piezoelectric layer to be focused by the acoustic lens; a preparation method comprises the following steps: the piezoelectric wafer I and the piezoelectric wafer II are side by side and the top surfaces are aligned to form a circular flat surface of the piezoelectric layer; the dematching part is bonded below the piezoelectric wafer II to form the piezoelectric layer; a coaxial cable is connected to the piezoelectric layer; the piezoelectric layer connected with the coaxial cable is fixed in the shell, the backing layer is arranged on the lower surface of the piezoelectric layer, and the acoustic lens and the matching layer are sequentially arranged on the upper surface, and the transducer is obtained. The transducer of the application only needs two same piezoelectric wafers, and the dual-frequency function is realized by adding the dematching part, and the treatment effect is good.

The utility model provides a non-contact power transmission network fault diagnosis device and system, and the device comprises an electric field collection board which is used for sensing and collecting a power frequency voltage magnetic field change signal of a power transmission line; the current sensor is used for sensing and collecting power frequency current and traveling wave current magnetic field change signals in the power transmission line; the main board is in signal communication connection with the electric field acquisition board and the current sensor through coaxial cables, and is used for receiving acquired power frequency voltage magnetic field change signals, power frequency current and traveling wave current magnetic field change signals which are used for judging whether a fault occurs in the line or not and judging the fault type; the GPS antenna is used for providing positioning information so as to judge the fault position on the line; the 4G antenna is used for reporting various information acquired by the device and a judgment result to the cloud platform master station; the energy storage battery provides electric energy for the whole device through the power supply board and the power supply protection board; the power panel is used for independently supplying power to the whole device, and the power protection board is used for providing EMC electromagnetic protection for the whole device.

The application discloses a transition structure from a stripline transmission line to a coaxial transmission line, which comprises a stripline, an upper shielding cavity communicated above the stripline, a lower shielding cavity communicated below the stripline, and a multilayer circuit board in which the upper shielding cavity, the stripline and the lower shielding cavity are arranged together, one side of the multilayer circuit board being electrically connected with a transition interface, the other side of the transition interface being electrically connected with a coaxial line, the transition interface comprising an interface floor, the middle part of the interface floor being provided with an insulating gap, the insulating gap being communicated with the upper shielding cavity, the stripline, the lower shielding cavity and the coaxial line. The transition interface is designed to realize the transition from the stripline inside the multilayer circuit board to the coaxial line on the sidewall of the multilayer circuit board; the insulating gap is arranged at the transition interface, and the transition gaps are arranged at the positions close to the transition interface between the upper inner floor and the lower inner floor to guide the electromagnetic field type to smoothly transit from the stripline field type to the coaxial field type, so that the advantages of good transmission standing wave and low loss are obtained.