212 results about "Medium wave" patented technology

The invention provides a single-pixel-based visible light infrared fusion compression spectrum imaging system and method, and the method comprises the following steps: 1, carrying out the signal coding of a to-be-detected target signal, and obtaining a coded to-be-detected target infrared signal and a coded to-be-detected target visible light signal; step 2, inputting a to-be-measured target infrared signal into an infrared imaging light path, collecting a medium-wave infrared spectrum intensity value, and inputting a to-be-measured target visible light signal into a visible light imaging light path to collect a visible light spectrum intensity value; step 3, carrying out compressed sampling and reconstruction operation on the visible light spectrum intensity value and the medium wave infrared spectrum intensity value to obtain an infrared hyperspectral image and a visible light hyperspectral image of the target to be detected; 4, performing image fusion according to the infrared hyperspectral image and the visible light hyperspectral image to obtain a fused image with rich details; the fusion imaging of the method has the characteristic of keeping the feature information of the target scene so as to realize high-quality imaging.

The invention discloses a preparation method of a double-wave infrared detector and a double-wave infrared section detector. The preparation method comprises the following steps: providing a GaSb substrate; sequentially growing a bottom contact layer, a medium wave absorption layer, a barrier layer, a long wave absorption layer and a top contact layer on the GaSb substrate; performing primary deposition of a passivation layer on the surface of the top contact layer, and performing primary etching from the absorption layer to the top contact layer; performing secondary deposition of a passivation layer in a covering manner, and performing secondary etching from the top contact layer to the bottom contact layer; depositing a passivation layer for the third time in a covering manner; holes are formed in the passivation layer of the table top and the passivation layer of the common electrode area, UBM metal TiPtAu is evaporated at the holes, and a detector chip is manufactured; the plasma exposure time of the surface of the absorption layer is reduced to the greatest extent; the detector chip and the In column of the reading circuit are interconnected to form the detector, and the prepared detector can obtain medium-wave infrared and long-wave infrared image information by using a single detector, and has excellent detection, identification and identification capabilities.

The invention relates to the technical field of infrared optical materials, and particularly discloses a large-size high-resistance infrared silicon single crystal and a preparation method thereof. The doping concentration of cobalt oxide in the large-size high-resistance infrared silicon single crystal is 10 ppm to 100 ppm, and the atomic concentration of phosphorus in the large-size high-resistance infrared silicon single crystal is 2 * 10 < 13 > / cm < 3 > to 6 * 10 < 13 > / cm < 3 >. The oxide of transition metal cobalt and phosphorus impurities are doped into the infrared silicon single crystal, carriers of cobalt and phosphorus and carriers of impurities such as boron and oxygen generate a recombination effect, so that the concentration of free carriers in the silicon single crystal is reduced, and the absorption coefficient of the doped silicon single crystal is relatively small; the infrared transmittance of the silicon single crystal in a medium wave band can be obviously increased, the resistivity can reach 600 omega.cm or above, and the use requirement of the infrared silicon single crystal in a high-performance infrared optical system can be met.

The invention relates to the technical field of infrared optical imaging, in particular to a low-sensitivity long-focal-length extremely-short-total-length medium-wave infrared zoom optical system, and aims to solve the problems that an existing medium-wave infrared zoom system is difficult to achieve long-focal-length zoom and has low sensitivity under the requirement conditions of large zoom ratio and extremely-short total length. The system is coaxially provided with a front fixed group, a zoom group, a compensation group, a rear fixed group, a secondary imaging group and a medium wave refrigeration detector along the direction of an optical axis, the front fixed group comprises a double-meniscus monocrystalline silicon lens and a double-meniscus monocrystalline germanium lens; the zoom group is a double-concave single crystal germanium lens; the compensation group is a double-convex monocrystalline silicon lens; the rear fixing group is a double-meniscus single crystal germanium lens; the secondary imaging group comprises a double-convex single crystal germanium lens, a straight surface single crystal germanium lens, a double-meniscus single crystal germanium lens and a meniscus single crystal silicon lens; the medium-wave refrigeration detector is coaxially and sequentially provided with a protection window, a cold diaphragm and a detector target surface, the protection window is located on one side close to an object space, and the detector target surface coincides with an image surface.

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.

The invention discloses an unmanned aerial vehicle countering system, and relates to the technical field of unmanned aerial vehicle countering, and the system comprises a plurality of guidance unmanned aerial vehicles which are used for carrying out the rigid interception of black flight unmanned aerial vehicles; the radar is used for discovering a black flight unmanned aerial vehicle target; the medium-wave infrared camera is used for performing image recognition on the black-flight unmanned aerial vehicle target; the control center is used for displaying a signal detected by the radar and a target image and generating a control instruction; the radar transmits the control instruction to the unmanned aerial vehicle, and controls and guides the unmanned aerial vehicle to fly to the black flight unmanned aerial vehicle and collide with the target; guidance of the unmanned aerial vehicle further comprises image terminal guidance, namely, an airborne image recognition and tracking system autonomously finds a target, tracks the target and guides the unmanned aerial vehicle to intercept collision; and guiding the unmanned aerial vehicle to autonomously adjust the flight attitude after the target is hit, and executing a task according to an instruction after stabilization. According to an actual deployment scheme, the radar instructs the guidance unmanned aerial vehicle close to the deployment incoming attack direction to take off and execute a countering task, and the interception probability can be effectively improved.

The invention relates to the technical field of photoelectricity, and discloses a light-emitting diode epitaxial wafer and a preparation method thereof, and an LED chip, the light-emitting diode epitaxial wafer comprises a substrate, and the substrate is sequentially provided with a buffer layer, a non-doped GaN layer, an N-type GaN layer, a combination layer and a P-type GaN layer; the combined layer comprises an electron consumption layer and a wave band layer which are stacked in sequence, the electron consumption layer comprises Mg-doped AlGaN layers and BN layers which are stacked alternately, the wave band layer comprises a medium wave layer, a short wave layer and a long wave layer which are stacked in sequence, the medium wave layer comprises Ga plane polarization GaN quantum barrier layers and first InGaN quantum well layers which are stacked alternately, and the first InGaN quantum well layers are stacked alternately. The short-wave layer comprises N-plane polarized GaN quantum barrier layers and second InGaN quantum well layers which are alternately stacked, and the long-wave layer comprises Ga-plane polarized AlGaN quantum barrier layers and third InGaN quantum well layers which are alternately stacked. The light-emitting diode epitaxial wafer provided by the invention can reduce electron overflow and weaken QCSE in the multi-quantum well layer.

The invention relates to a breakwater structure for wave power generation and a construction method of the breakwater structure. The breakwater structure comprises a lower barrel body, an upper caisson and a power generation device. A compartment is arranged in the upper caisson, and the power generation device is installed in the compartment. A wave inlet hole is formed in the wave facing side of the upper caisson, a cast-in-place adjusting node is arranged on the top of the upper caisson, and a wave wall, a cable pipe trench, a detachable road plate and an overhauling device are sequentially arranged above the node. The breakwater structure and the wave power generation system are integrated by adopting standard barrel type foundation factory prefabrication and floating transportation installation and combining cast-in-place joint leveling and the detachable road plates. The structure has the advantages of being convenient to construct, controllable in cost, stable in structure, convenient to maintain and the like, is suitable for wave power generation under medium and small wave conditions, and is particularly suitable for green power supply and coast protection in areas such as ports and islands.

The embodiment of the invention discloses an infrared broadband multispectral radiation temperature measuring device and method, a medium and equipment, the device comprises a front optical module, a micro lens array, an optical filter array and a detector array, the front optical module is used for separating medium-wave radiation and long-wave radiation of a target object, and the micro lens array is used for detecting the medium-wave radiation and the long-wave radiation of the target object; reducing the medium wave radiation and the long wave radiation and projecting the medium wave radiation and the long wave radiation to the micro-lens array; the micro-lens array is used for focusing and converging the medium-wave radiation and the long-wave radiation after the reduction projection to obtain medium-wave converged light and long-wave converged light; the optical filter array is used for receiving the corresponding medium-wave convergent light and the long-wave convergent light and filtering the medium-wave convergent light and the long-wave convergent light respectively; and the detector array is used for performing multi-spectrum acquisition on the filtered medium-wave convergent light and long-wave convergent light to obtain a target spectrum radiation image. The multispectral radiation temperature measuring device is simple in structure, and temperature field measurement of a target object can be easily realized by a high-speed infrared broadband multispectral imaging technology.

The invention discloses a medium-wave refrigeration infrared lens, the focal length of which is 300mm, and the infrared lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged along the transmission direction of an optical axis, the first lens, the third lens and the fifth lens are all meniscus positive lenses with convex surfaces facing the object side, the second lens is a meniscus negative lens with a convex surface facing the object side, and the fourth lens is a meniscus positive lens with a convex surface facing the image side; wherein the first lens and the fifth lens are made of silica glass, the second lens and the third lens are made of germanium glass, and the fourth lens is made of chalcogenide glass. By reasonably distributing the focal power, adjusting the combination and arrangement mode of the lenses and utilizing the difference of thermal characteristics between different materials, the positive focal power and the negative focal power are matched with each other, the influence caused by temperature change is compensated, and therefore athermalization is achieved under the condition that it is ensured that the size is small. The invention further discloses an imaging device.

The invention discloses a dual-band infrared image decision fusion detection method of a monocular Cassegrain structure. The method comprises the following steps: building a binocular vision platform of medium-wave infrared and long-wave infrared of the Cassegrain structure; obtaining an unmanned aerial vehicle target image of medium waves and Cassegrain structure long waves; the method comprises the following steps: constructing a KANyov10 pre-detection head; a multi-scale feature fusion module is adopted to carry out fusion processing on the unmanned aerial vehicle target images of the medium waves and the Cassegrain structure long waves, and a fusion image of the unmanned aerial vehicle target is obtained; and inputting the fused image into a KANyov10 pre-detection head, and outputting a detection result of the unmanned aerial vehicle target. According to the method, under the condition that completely strict pixel alignment is not needed, hardware equipment is utilized to amplify the region of interest, the features of the unmanned aerial vehicle target are enhanced, and the detection precision of the weak and small target under the complex background is improved through decision-level fusion.

A GaSb substrate, a GaSb buffer layer, an epitaxial thin film, a first electrode and a second electrode are adopted, the GaSb substrate, the GaSb buffer layer and the epitaxial thin film are sequentially stacked, and the epitaxial thin film comprises a first contact layer, a long wave absorption layer, a medium wave absorption layer and a second contact layer which are sequentially stacked; the first contact layer is in contact with the GaSb buffer layer; and etching is carried out on the basis of the epitaxial thin film to form a step, the depth of the step reaches the first contact layer, the first electrode is conducted with the first contact layer, the second electrode is conducted with the second contact layer, finally, a two-color infrared detector structure is formed, 12ML InAs / 2ML InAs0. 5Sb0. 5 superlattice is used as a material of the medium-wave absorption layer, good lattice matching is formed between the medium-wave absorption layer and the long-wave absorption layer, and the performance of the two-color infrared detector is improved. Therefore, interface defects and stress accumulation caused by lattice mismatch are reduced, and a smooth and uniform interface is provided for subsequent growth of the epitaxial layer, so that the growth difficulty of the epitaxial layer can be reduced.

The utility model relates to the technical field of medium-wave transmitters, in particular to a medium-wave transmitter heat dissipation assembly switching structure which comprises a medium-wave transmitter body, a supporting plate is fixedly connected to the medium-wave transmitter body, two first electric push rods are fixedly connected to the supporting plate, and a sliding plate is slidably connected to the supporting plate. The end of the first electric push rod is fixedly connected with the sliding plate, a connecting plate is fixedly connected to the sliding plate, a second electric push rod is fixedly connected to the connecting plate, a sliding block is slidably connected to the connecting plate, a connecting plate is rotationally connected to the supporting plate, a swing rod is fixedly connected to the connecting plate, and a connecting rod is rotationally connected between the swing rod and the sliding block. A connecting frame is fixedly connected to the connecting plate, and two heat dissipation structures are arranged on the connecting frame. By arranging the two heat dissipation structures, when one heat dissipation structure is damaged, the other heat dissipation structure can be switched through the switching structure for heat dissipation, so that heat dissipation can be continuously carried out on the medium wave transmitter, and the use safety is effectively improved.

The invention provides a laser-corrected dual-band infrared passive distance measurement method, which comprises the following steps of: firstly, acquiring information of a target at three continuous sampling moments by using an infrared detection system, and estimating an extinction coefficient and path radiation; then calculating a multi-mode fusion distance at a next sampling moment; correcting a medium-wave extinction coefficient, medium-wave path radiation, a long-wave extinction coefficient and long-wave path radiation by using the field angles, the irradiance and the laser ranging values at the second to fourth sampling moments; and for a subsequent moment, calculating the multimode fusion distance of the target as a resolving value of the target distance at the sampling moment, and then correcting the medium wave extinction coefficient, the medium wave path radiation, the long wave extinction coefficient and the long wave path radiation. According to the method, dual-band infrared passive distance measurement and laser distance measurement are fused, target motion information is combined, accumulative errors of infrared passive distance measurement and a motion model are eliminated through laser correction, the defect of infrared distance measurement is compensated, the distance measurement precision and the distance measurement stability are improved on the premise of concealment, and multi-target real-time distance measurement is achieved.

The invention discloses a medium-wave infrared optical system with a super large zoom ratio of 50×, which comprises a front group, a rear group and two folding reflectors from the object side to the image side, wherein: the front group comprises a coaxial front lens group 1, a zoom lens, a compensating lens and a focusing lens, and the front group also comprises a reflector 1; the rear group comprises a rear lens group 1, a rear lens group 2, a reflector 2 and a rear lens group 3; the imaging light beam of the object side is incident on the front lens group 1, the zoom lens, the compensating lens and the focusing lens, and is folded and reflected on the reflector 1 for a primary imaging, and then passes through the rear lens group 1 and the rear lens group 2, and is folded and reflected on the reflector 2, and is formed on the detector for a secondary imaging through the rear lens group 3. The invention has the characteristics of long focal length, small size, light weight and high resolution, and has good imaging quality at all focal lengths.

The invention discloses a medium-wave broadcast coverage simulation method based on a medium-wave analysis technology, relates to the technical field of signal propagation simulation, and is used for solving the problems of single propagation influence evaluation factor dimension and lack of space-time dynamic characteristics during medium-wave broadcast in the prior art. Based on a simulation data set covering a plurality of spatial areas, medium wave propagation analysis models of different time periods are established, propagation diffusion paths of the respective time periods are constructed, the simulation data set is used as an interference source for analogue simulation, and diffusion path loss of medium wave broadcast in any time period and any spatial area is obtained; performing statistics on diffusion path loss of all space areas on the propagation and diffusion paths in the same time period, superposing the propagation and diffusion paths in the same space area in different time periods to obtain broadcast coverage intensity of each space area, marking the broadcast coverage intensity of all the space areas to the whole simulation area, and obtaining broadcast coverage intensity of all the space areas. A broadcast coverage effect view characterizing the broadcast listening quality is generated.

The utility model discloses a multiband optical system, which relates to the technical field of optics, and comprises a front lens group, a second dichroic mirror, a medium wave lens group, a visible light lens group and a long wave lens group, the front lens group comprises a first dichroic mirror, the first dichroic mirror is used for decomposing light rays into mixed light rays of medium wave infrared light rays and visible light and long wave infrared light rays, and the second dichroic mirror is used for decomposing the mixed light rays of visible light and long wave infrared light rays; the second dichroic mirror is located on an emergent path of the mixed light of the visible light and the long-wave infrared light and is used for decomposing the mixed light of the visible light and the long-wave infrared light into visible light and long-wave infrared light, and the medium-wave mirror group is used for correcting medium-wave infrared light and converging the medium-wave infrared light on a focal plane of the medium-wave detector; the visible light lens group is used for correcting visible light and converging the visible light on a focal plane of the visible light detector, and the long-wave lens group is used for correcting long-wave infrared light and converging the long-wave infrared light on a focal plane of the long-wave detector. Through the arrangement, the multi-band optical system can rapidly and accurately detect target characteristic information of three bands of visible light, medium wave and long wave infrared in real time.

The present invention discloses a metal-polymer target recognition and classification system based on infrared wide spectrum, which belongs to the field of target classification and recognition. It includes: a radiation brightness inversion module for obtaining a detected spectral vector with a target, respectively calculating the response gain vector and radiation bias vector of each band, weightedly calculating the response gain and radiation bias vector of the system, and inverting the radiation brightness vector of the target; a target recognition module for dividing the target's radiation brightness vector into three sub-vectors: shortwave band, medium wave band, and long wave band, respectively inputting them into a trained recognition network to obtain the recognition probability under each band; a fusion classification module for weighted fusion of the recognition probabilities under each band, comparing the fused probability with a set threshold, and if it exceeds, it is a metal material target; otherwise, it is a polymer material target. The present invention breaks through the limitations of interference target recognition, improves the anti-interference ability of the recognition network, and also improves the accuracy of target recognition.

The utility model provides a change-over switch of a medium-wave transmitter, which relates to the technical field of change-over switches of medium-wave transmitters and comprises a mounting base, symmetrical fixing plates I are arranged above the mounting base, symmetrical mounting plates are fixedly connected to the outer surfaces of the two fixing plates I, and the mounting plates are fixedly connected to the outer surfaces of the fixing plates II. Symmetrical second fixing plates are fixedly connected to the outer surfaces of the two mounting plates. According to the change-over switch of the medium wave transmitter, through cooperative arrangement of the mounting base, the first fixing plate, the mounting plate, the second fixing plate and the quick release mechanism, people can quickly detach the contact seat body to maintain the contact spring fixed on the inner wall of the contact seat body, so that the working efficiency of people during maintenance is improved; and moreover, the condition that people are relatively difficult to disassemble due to corrosion of the screws is avoided, and the maintenance difficulty of people on the contact spring fixed on the inner wall of the contact seat body is effectively reduced.

The invention discloses a portable gas leakage detection device based on a refrigeration type superlattice infrared detector, which comprises a detector module, an optical lens group and a data processing unit, and is characterized in that the detector module comprises a refrigeration type detector and a refrigerator, and the refrigeration type detector is based on an infrared radiation absorption effect; the optical lens group comprises a medium-wave infrared lens and a visible light lens; and the data processing unit obtains data including an infrared image and a visible light image, and judges the gas leakage condition after the data is processed by a detection algorithm. According to the portable gas leakage detection device based on the refrigeration type superlattice infrared detector, long-distance and non-contact rapid detection and accurate leakage positioning of organic compounds and other industrial hazardous gases are achieved, and industrial production safety and environment safety are guaranteed.

The present application relates to the technical field of optical films, and specifically discloses a metal dielectric enhanced reflective film with a wavelength of 3‑5µm and a preparation method thereof. The metal dielectric enhanced reflective film with a wavelength of 3‑5µm has a film layer structure of: Sub / aGbAcYdLeHfLgHhLiHjLkHlLmHnLoHpLqH / O, wherein Sub represents a BK7 or K9 substrate, O represents air, G represents a Cr layer, A represents an Au layer, Y represents a Y2O3 layer, H represents a ZnSe layer, and L represents a YF3 layer; a‑q represents the coefficient of the optical thickness of one quarter of the reference wavelength of each layer. The metal dielectric enhanced reflective film with a wavelength of 3‑5µm prepared in the present application uses K9 / BK7 double-sided polished optical glass as a substrate, and a metal dielectric film is plated on the surface of the substrate to obtain a metal dielectric enhanced reflective film with excellent mechanical and optical properties, which is suitable for infrared medium-wave prism optical imaging.

The invention provides a MIM enhanced controllable mid-infrared photoelectric detector, wherein the upper surface of the substrate is separated into source / drain electrodes on both sides and a metal back reflection layer in the middle by a hexagonal boron nitride layer, the source / drain electrodes are titanium-gold metal composite electrodes, the lower layer is titanium as an adhesion layer, and the upper layer is gold; the metal back reflection layer is completely covered by the hexagonal boron nitride layer; a molybdenum disulfide layer and a black arsenic phosphide layer form a b‑AsP / MoS2 heterojunction, the overlapping part of the two layers is on the metal back reflection layer, and the molybdenum disulfide layer and the black arsenic phosphide layer respectively form ohmic contacts with the metal composite electrode on one side, and a MIM grating is integrated on the b‑AsP / MoS2 heterojunction junction region, and a transverse resonance mode is formed between the metal back reflection layer and the periodic metal grating, so that the light absorption of the b‑AsP / MoS2 heterojunction is significantly increased in the mid-wave band range after 4μm in the mid-wave infrared, thereby enhancing absorption control.

The utility model provides an automatic tunable middle wave sky tuning system adapting to complex environment, including transmitting system, excitation source, signal switching system, radio frequency sampling system, impedance sampling system, middle wave sky tuning network, middle wave antenna and automatic tuning system. The utility model discloses an automatic tunable middle wave sky tuning system adapting to complex environment reduces the signal attenuation between the machine room and the sky tuning room, reduces the influence (such as electromagnetic interference, temperature and humidity change) of environmental factors to the tuning accuracy simultaneously, adapts to complex environment, and automatically tunes the out-of-tune middle wave sky tuning network under complex environment, realizes the sky tuning system adaptation again, reaches the reliability of middle wave sky tuning system power transmission, and ensures the reliable operation of transmitting system.

1. The name of this design product: Power Adapter (Medium Wave Broadcasting). 2. Application of this design product: used for power adapter. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention discloses a roll shape design method of a variable-convexity working roll with medium wave control capability. The method comprises the following steps: setting a coordinate origin on a working roll, and setting a conventional cubic CVC curve in a secondary convexity range of the working roll and an M-shaped quartic curve symmetrical about a roll surface midpoint; on the basis of a conventional cubic CVC curve, according to the requirement of no-load roll gap convexity compensation amount at the internal width position of the working roll, an M-shaped quartic curve symmetrical about the midpoint of the roll surface is overlaid on the roll gap, and a variable-convexity working roll shape curve with the middle wave control capacity is obtained; and calculating to obtain the roll shape coefficient of each roll of the roll shape curve of the variable-convexity working roll with the medium wave control capability, so as to finally determine the roll shape curve of the variable-convexity working roll with the medium wave control capability. According to the method, on the basis of not changing the secondary convexity range of the no-load roll gap of the continuous variable convexity section and not changing the plate shape control model, the convexity of the roll gap at different strip steel width positions is increased, and the purpose of medium wave control is achieved.

The invention discloses a processing system and method for discharging alkali liquor from sodium carbonate, and belongs to the technical field of chemical engineering, the processing system for discharging alkali liquor from sodium carbonate comprises a distributing device and a conveying mechanism which are sequentially connected, and a washing water circulating system, a belt filter and a medium wave infrared device are sequentially arranged in the direction of conveying alkali liquor from sodium carbonate by the conveying mechanism; the washing water circulation system comprises a first-section washing water mechanism, a second-section washing water mechanism and a third-section washing water mechanism which are sequentially arranged, then third-section washing water treatment, belt filter treatment and medium-wave infrared treatment are sequentially carried out on the soda outlet liquor, the third-section washing water is additionally arranged through gradient heat exchange utilization of desalted water, and a third-section washing water circulation system is constructed. According to the present invention, with the combination of the filter aid compounding and the medium-wave infrared radiation reinforced dehydration, the filtration condition is optimized from the source, such that the purposes of filter cake moisture reducing, filtration pressure difference reducing, equipment scaling relieving and washing efficiency improving are achieved so as to reduce the calcination energy consumption, improve the product purity, prolong the equipment operation period and reduce the maintenance cost;

The utility model relates to vehicle charging technical field, more particularly, relate to a kind of middle wave transmitting antenna insulation replacement tool, comprising: clamping plate assembly, long pull rod and drive assembly;Clamping plate assembly can be set on stay wire and abut on the terminal of first insulating frame, drive assembly includes two drive units, the first end of two drive units is respectively set in the end of clamping plate assembly, the second end of drive unit is connected with long pull rod, the second end of drive unit can be moved along the extension direction of long pull rod relative to the first end of drive unit, long pull rod can be set on first bearing beam or second bearing beam, drive unit can drive long pull rod to be close to or away from clamping plate assembly.Such that it has solved the problem that middle wave transmitting antenna insulation replacement lacks suitable replacement tool, and replacement process is complex and the problem of large construction quantity.

The application discloses a kind of shale oil reservoir's attenuation-elastic-electricity combined modeling and parameter prediction method, belong to geophysical exploration and oil and gas reservoir evaluation technical field.First, obtain mineral components, pore structure and elastic-attenuation-electricity full-dimensional experimental data through core experiment, determine attenuation and resistivity as high sensitivity parameter after sensitivity analysis;Again, based on Hashin-Shtrikman boundary, differential equivalent medium theory, triple-pore medium wave propagation equation, construct the acoustic and electrical rock physics model of completely consistent micro-pore structure;Finally, establish longitudinal wave impedance-attenuation coefficient-resistivity three-dimensional joint rock physics chart, after multi-band correction, simultaneously quantitative prediction reservoir porosity, shale content and fracture porosity.The application breaks through the limitation of conventional acoustic-electricity combined model, significantly reduces the multi-solution of reservoir parameter prediction, and is suitable for fine evaluation of various shale oil tight reservoirs.

The invention relates to the technical field of radio frequency circuits, in particular to a multi-path coupler suitable for a medium wave receiver, which comprises a plurality of band-pass filtering channels, each band-pass filtering channel comprises a single-pole triple-throw switch, two coupling band-pass filtering networks and a single-pole double-throw switch, the use of the single-pole three-throw switch array prevents the coupling band-pass filter networks of the adjacent channels from being accessed at the same time to influence the filter performance, and one of the two coupling band-pass filter networks of the adjacent channels can be selected to be accessed through the single-pole three-throw switch, so that the filter performance is improved. Therefore, the purpose that one receiving antenna can be connected to any one or more coupling band-pass filtering networks can be achieved, a plurality of band-pass filter channels can share one receiving antenna, and the use requirement that a plurality of narrow-band filters with high out-of-band rejection share one antenna is met.

The invention provides an artificial intelligence-based industrial boiler coking prediction method and system. The method comprises the steps of infrared thermal image time sequence acquisition, multi-spectral dynamic threshold segmentation, acoustic impedance feature extraction, multi-modal working condition fusion, space-time attention prediction modeling and adaptive threshold decision triggering. According to the method, the local threshold values are adaptively calculated on different spectral bands such as short waves, medium waves and long waves, response characteristics of all temperature zones can be considered, the false detection and missing detection risks caused by the fixed threshold values are remarkably reduced, and high-temperature hot spots are extracted more accurately and reliably; acoustic impedance characteristics obtained through calculation quantitatively reflect the structure and viscosity change of a coking layer by using attenuation and time delay information of sound waves in an ash layer, a direct and fine physical basis is provided for subsequent rheological property inference, and the defect that mechanical changes of materials are difficult to capture through pure temperature monitoring is effectively overcome.