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303results about How to "With filter function" patented technology

High and steep slope reinforcing and greening device and method

The invention relates to the field of environment protection, and discloses a high and steep slope reinforcing and greening device and method. The high and steep slope reinforcing and greening devicecomprises reinforced three-dimensional polypropylene gauze pads, U-shaped nails, anchor rods, vegetation seeds, soil improvement fiber mixtures, erosion-resistant fiber mixtures, fiber filtering tubesand wedges. The high and steep slope reinforcing and greening device is simple in construction process and convenient to operate; after the reinforced three-dimensional polypropylene gauze pads are fixedly arranged on a slope surface of a high and steep slope by the anchor rods and the U-shaped nails, the fiber filter tubes are laid, and then a mixture of the vegetation seed and the soil improvedfiber mixture and a mixture of the vegetation seeds and the erosion-resistant fiber mixture are successively sprayed and sowed. A soil living condition for growth of plants can be improved effectively, nutrient elements required for growth and metabolism are provided for the plants, and the technical problems that by an existing high and steep slope reinforcing method, the slope is easily washedby rainstorm, secondary landslide is caused, the collapse water-retaining property is poor, and meanwhile, secondary pollution to the environment will be caused are solved.
Owner:JOFO GREEN CO LTD

Orthogonal signal frequency-multiplication phase-demodulation logic circuit with filter function

The invention discloses an orthogonal signal frequency-multiplication phase-demodulation logic circuit with filter function, which mainly comprises a filter circuit module and a frequency-multiplication phase-demodulation circuit module, wherein the filter circuit module consists of eight D triggers, six phase inverters, four three-way AND gates and two JK triggers, an input end of the module receives two paths of orthogonal coding signals needing to be filtered respectively, and an output of the module has two paths of orthogonal signals filtered by the corresponding orthogonal coding signals; and the frequency-multiplication phase-demodulation circuit module consists of two XOR gates and five D triggers, an input end of the module receives two paths of signals needing phase demodulation respectively, and an output end of the module has phase-demodulation signals and fourfold frequency signals. The circuit combines filter and frequency-multiplication phase demodulation, is simple and reliable, can solve the problem of subsequent data processing error caused by signal interference, can be downloaded to a programmable chip such as CPLD or FPGA and the like, saves the space of a circuit board, is convenient to debug, and has reliable performance and utility value.
Owner:ZHEJIANG UNIV

Function ceramic material for efficiently filtering radioactive iodine and cesium, and preparation method thereof

InactiveCN103274757ALarge specific surface areaStrong physical adsorption and fixation capacityCeramic materials productionCeramicwareActivated carbonIron oxide
The present invention discloses a function ceramic material for efficiently filtering radioactive iodine and cesium, and a preparation method thereof. The material is prepared through the following steps that: industrial sludge and clay are adopted as main materials, active carbon or wood chips, calcium hydroxide or calcium carbonate, iron powder or iron oxide powder, liquid paraffin and other auxiliary materials are matched, processes of mixing, stirring, granulation and the like are performed, and sintering in performed in an oxygen deficiency atmosphere or a reduction atmosphere to prepare the material. The function ceramic material has characteristics of porous property, rich pores, large specific surface area, strong absorption capacity, high water filtration flow, efficient removal and immobilization of radioactive iodine and cesium in nuclear wastewater, and easy shape and size adjustment, and can be used for purification treatments of nuclear wastewater and medical radioactive wastewater.
Owner:苏磊

Measurement data fusion method for two-dimensional radar and infrared sensors at different sites

ActiveCN103792515AWith filter functionAvoid alignment calculationsRadio wave reradiation/reflectionRadarCovariance
A measurement data fusion method for a two-dimensional radar and infrared sensors at different sites. The method includes the following steps that: step 1, successful measurement target pair information is received; second step, a target observation equation is constructed through transformation; third step, state vectors that satisfy Markov estimation conditions are constructed according to measurement azimuth angle characteristics; fourth step, Markov estimation is performed on a target state vector X; step five, error covariance calculation is performed on the target state vector X; and step six, state vectors on a Z axis and the variance of the state vectors are calculated. The measurement data fusion method is advantageous in simple operation. According to the measurement data fusion method of the invention, the target observation equation is constructed through combining the measurement data of the two-dimensional radar and the infrared sensors at different time points; the state vectors and the covariance thereof of the target observation equation are estimated according to the Markov estimation principle; and therefore, complex time-space alignment calculation of vacant-dimension data can be avoided. The method is easy to implement and apply to engineering practice, and has a target state estimation function as well as fusion and filtering functions, and has excellent real-time performance and high fusion accuracy.
Owner:NO 709 RES INST OF CHINA SHIPBUILDING IND CORP

Balance-to-unbalance signal filtering power divider

The invention discloses a balance-to-unbalance signal filtering power divider which comprises a metal grounding plate (2), first and second input port feeder lines (31 and 32) and first and second output port feeder lines (41 and 42), wherein the metal grounding plate (2) is fully covered on the lower surface of a rectangular dielectric substrate (1); the first and second input port feeder lines (31 and 32) and the first and second output port feeder lines (41 and 42) are laminated on the upper surface of the dielectric substrate (1); the upper surface of the dielectric substrate (1) comprises a first resonator and a second resonator (51, 52), first to fourth micro-strip impedance tapered lines (61, 62, 63 and 64), first to sixth coupling lines (71-76), a micro-strip line (8) and a first isolation resistor and a second isolation resistor (91 and 92). The balance-to-unbalance signal filtering power divider disclosed by the invention is simple in structure, small in size and excellent in common-mode rejection.
Owner:NANJING UNIV OF SCI & TECH

Low-frequency radiation unit and base station antenna

The invention provides a low-frequency radiation unit. The low-frequency radiation unit comprises a dielectric substrate, a radiator and a feed balun, wherein the radiator comprises two dipoles whichare orthogonally distributed, radiation arms of the two dipoles are respectively composed of a vertical line and a horizontal line and jointly form a cross-shaped line, the tail ends of the vertical line and the horizontal line are connected through an arc line, and a plurality of sections of bent lines are arranged in the middle of the arc line; and the feed balun is of an orthogonal structure, the bottom of the feed balun is connected with a feed network, and the top of the feed balun is connected with the radiator. The invention also provides a base station antenna. The base station antennais formed by nesting and inserting a plurality of low-frequency radiation units into the middles of a plurality of high-frequency radiation units. Therefore, the low-frequency radiation unit has a filtering function, the influence of the low-frequency radiation unit on the high-frequency radiation performance can be effectively reduced when the high-frequency antenna and the low-frequency antennaare nested to form an array, and the miniaturization of the antenna size can be realized.
Owner:MOBILE ANTENNA TECH SHENZHEN +5

Graphene PVDF composite conductive ultrafiltration membrane as well as preparation and contaminant removing methods of ultrafiltration membrane

The invention discloses a graphene PVDF composite conductive ultrafiltration membrane and a preparation method thereof. The method comprises the following steps: a plurality of concave and convex pitpoints are etched on a surface of a copper foil by adopting a laser pore-forming technique, and a plurality of layers of graphene thin layers grow on the surface of the copper foil to form a graphenethin layer with defects; dimethylacetamide, polyvinylidene fluoride and polyvinylpyrrolidone are uniformly mixed to obtain a casting solution; and the casting solution uniformly coats the graphene thin layer of the copper foil, the whole copper foil is put into water, membrane formation is performed by phase inversion, the membrane-formed copper foil is put into a nitric acid solution, and after the copper foil is dissolved by nitric acid, the graphene PVDF composite conductive ultrafiltration membrane is obtained. The membrane disclosed by the invention comprises a PVDF supporting thin layer,the graphene thin layer adheres to the surface of the PVDF supporting thin layer, the graphene thin layer has the defects, the defects are pores, and hydrophilic functional groups is in the pores. The ultrafiltration membrane disclosed by the invention has good conductivity, and is cleaned by utilizing an electrochemical manner when being contaminated by a contaminant, wherein the cleaning efficiency is high.
Owner:XIAN UNIV OF TECH

Breathing machine and humidifier

The invention provides a breathing machine and a humidifier. The humidifier is applied to the breathing machine, and includes a first container, a second container and a filter structure, wherein the first container is used for containing liquid, and provided with a first through hole; an accommodating part is arranged in the second container, and includes an opening formed in the wall of the second container, and the opening communicates with the first through hole; the filter structure is arranged in the accommodating part for filtering the liquid entering the second container from the first container. The humidifier provided by the invention is high in heating efficiency and good in air humidifying effect; due to the splitting design of a liquid storage area and a heating area, a user is convenient to operate, and effectively reduced in labor intensity of the user.
Owner:BMC MEDICAL

Multifunctional flushing and drying device for medical pipeline

The invention belongs to the technical field of medical appliances, and particularly relates to a multifunctional flushing and drying device for a medical pipeline. The problems that in an existing medical pipeline cleaning mode, a medical pipeline is generally removed, then the pipeline is cleaned by workers, due to the fact that the pipeline is long and bent, the interior of the pipeline is noteasy to clean thoroughly, meanwhile, after cleaning, the interior of the pipeline is not easy to dry, plaque is prone to leave, so that the cleaning effect and efficiency of the pipeline cannot be guaranteed, and the manual workload is increased. According to the scheme, the device comprises a mounting seat, wherein a cleaning seat is fixedly mounted on the top of the mounting seat, a cleaning cavity is formed in the cleaning seat, and a feeding port is formed in the inner wall of the top of the cleaning cavity. The device has the advantages that the structure is simple, multiple caliber plugsare arranged, aiming at long and thin pipelines with different calibers, the device is portable equipment integrating the multiple functions of grabbing and brushing, flushing and drying the pipelines, so that the cleaning effect of the pipelines is improved, the cleaning time is saved, meanwhile, the manual workload is reduced, and the high practicability is achieved.
Owner:SHANDONG RES INST OF TUMOUR PREVENTION TREATMENT

Industrial and mineral JP cabinet intelligent constant temperature system

ActiveCN106292764ABest energy saving statusObserve the temperature in real timeSubstation/switching arrangement cooling/ventilationTemperature control using electric meansEngineeringRefrigeration
The invention discloses an industrial and mineral JP cabinet intelligent constant temperature system including a JP cabinet body, a refrigeration and heating device, an internal heat exchanger, an external heat exchanger, a first driving oil pump, a second driving oil pump, and a plurality of temperature sensors, the refrigeration and heating device, the internal heat exchanger, the first driving oil pump, the second driving oil pump, and the plurality of temperature sensors are arranged in the JP cabinet body, an external heat exchanger is arranged at the outer side of the JP cabinet body, and the refrigeration and heating device includes a heating device, a refrigerator, a controller, a plurality of groups of semiconductor refrigeration sheets, and a casing. The industrial and mineral JP cabinet intelligent constant temperature system acquires the temperature signal in the JP cabinet through the temperature sensors, the controller controls the on and off of the first driving oil pump and the second driving oil pump based on the temperature signal, and moreover, the controller controls the flow direction of the oil medium in the interface pipe and the switching of the semiconductor refrigeration sheets according to the temperature signal and reliably ensures the constant temperature in the JP cabinet.
Owner:江苏苏能机械有限公司

Check valve structure and air conditioner

The invention relates to a check valve structure and an air conditioner. The check valve structure comprises a check valve assembly and a filtering assembly. The check valve assembly comprises a hollow valve body, an elastic part and a piston, wherein the piston is arranged in the valve body, one end of the elastic part is arranged on the piston, and the other end of the elastic part is arranged on the valve body. A mounting groove is formed in the valve body, the filtering assembly is arranged in the mounting groove, solid impurities in refrigerants can be removed through a filtering screen and prevented from blocking the check valve structure so that the solid impurities cannot enter a pipe system, and the normal operation of the air conditioner is guaranteed; meanwhile, the filtering assembly is arranged in the check valve assembly so that the size of the air conditioner can be reduced.
Owner:GREE ELECTRIC APPLIANCES INC

Glass fiber reinforced plastic septic tank

The invention discloses a glass fiber reinforced plastic septic tank which comprises a shell, wherein reinforcing ribs are welded on the outer wall of the shell; an excrement inlet is formed in one end of the shell, and an excrement outlet is formed in the other end of the shell; a first treatment chamber, a second treatment chamber and a third treatment chamber are arranged in the shell; a first partitioning plate is arranged between the first treatment chamber and the second treatment chamber; the first partitioning plate is welded on the inner wall of the shell; a first excrement passing pipe is arranged on the first partitioning plate; a second partitioning plate is arranged between the second treatment chamber and the third treatment chamber; the second partitioning plate is welded on the inner wall of the shell; a second excrement passing pipe is arranged on the second partitioning plate; a first decontamination port, a second decontamination port and a third decontamination port are arranged on the upper surface of the shell; and the first decontamination port is positioned above the first treatment chamber. By arranging the decontamination ports, sludge can be conveniently cleared; and by arranging a suction fan, internal methane can be sucked out so as to prevent the shell from bursting.
Owner:安徽星元环保科技有限公司

Gain filter circuit applicable to scientific-grade CCDs

The invention provides a gain filter circuit applicable to scientific-grade CCDs (charge coupled device), in particular to the processing circuit of CCDs. The gain filter circuit comprises an operational amplifier, two analog switches (S1 and S2), a resistor (R) and a capacitor (C), wherein the analog switch S2 is connected with the capacitor (C) in parallel to jointly form the negative feedback of the operational amplifier; the non-inverting input terminal of the operational amplifier is grounded, and the inverting input terminal thereof is connected with the output signal of the CCD via the resistor (R); and the output signal of the CCD is grounded via the other analog switch (S1). Followed by the start of the driving circuit of the CCD, the gain filter circuit can continuously adjust the amplification of the circuit on a real-time basis by adjusting and feeding back the disconnection time of the analog switch (S2) according to the driving timing sequence of the CCD; and by adjusting the capacitance of the capacitor (C) and the resistance of the resistor (R), the gain filter circuit can vary the amplification within a large range and vary the cutoff frequency of the circuit, thus achieving the low-pass filter on the output signals of the CCD. Accordingly, based on the simple control, the invention can achieve the continuously adjustable gain and the filter function.
Owner:CENT FOR SPACE SCI & APPLIED RES

Industrial and mineral JP cabinet intelligent constant temperature device

ActiveCN106325327ABest energy saving statusObserve the temperature in real timeTemperatue controlEngineeringRefrigeration
The invention discloses an industrial and mineral JP cabinet intelligent constant temperature device comprising a JP cabinet body, a refrigeration and heating device, an internal heat exchanger, an external heat exchanger, a first driving oil pump, a second driving oil pump and multiple temperature sensors. The JP cabinet body is internally provided with the refrigeration and heating device, the internal heat exchanger, the first driving oil pump, the second driving oil pump and the multiple temperature sensors. The external side of the JP cabinet body is provided with the external heat exchanger. The refrigeration and heating device comprises a heating device, a refrigeration device, a controller, multiple sets of semiconductor refrigeration sheets and a shell. According to the industrial and mineral JP cabinet intelligent constant temperature device, the temperature signals in the JP cabinet are acquired through the temperature sensors, the controller controls connection and disconnection of the first driving oil pump and the second driving oil pump according to the temperature signals, and the controller controls the flowing direction of the oil medium in an interface pipeline and on/off of the semiconductor refrigeration sheets according to the temperature signals so as to reliably guarantee constant temperature in the JP cabinet.
Owner:泰州市明德科技服务有限公司
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