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276results about How to "Flexible application" patented technology

Multicomponent composite flocculating setting agent and use in arsenic contamination water treatment

The invention belongs to the technical field of river water body pollution control and in particular relates to a multiple-element compound flocculating settling agent and the application of the multiple-element compounded flocculating settling agent in arsenic pollution water body treatment. The multiple-element compounded flocculating settling agent is prepared by compounding malysite, aluminium salt, hypermanganate, polyacrylamide and aqueous solution. The multiple-element compounded flocculating settling agent can be applied in the arsenic pollution water body treatment to remove arsenic in the arsenic pollutant water body. The concentration of the arsenic in the treated water can meet or is superior to the specified requirement of three types of water on the arsenic concentration in the national earth surface water environment quality standard (less than 0.05 mg/L). The invention also can be used for removing heavy metals such as copper, chromium, cadmium, lead and the like in water by sedimentation. The multiple-element compounded flocculating settling agent can be used together with a multiple-element compounded metal oxide arsenic removal setting agent in static or flowing arsenic pollution water body treatment for removing the arsenic in the water body polluted by arsenic.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI

Charging landing gear, unmanned aerial vehicle, charging platform and unmanned aerial vehicle cruising and charging system

The invention discloses a charging landing gear suitable for an unmanned aerial vehicle. A cross rod of the charging landing gear is provided with a plurality of charging contact parts, wherein a charging circuit module is also arranged in the cross rod; and adapting of a charging interface of the unmanned aerial vehicle can be directly finished through the landing gear. The invention discloses a landing gear-based unmanned aerial vehicle. The unmanned aerial vehicle can be electrically connected directly through the landing gear when charged; the unmanned aerial vehicle stops on a charging platform of the matched with the landing gear when needing to be charged; and the unmanned aerial vehicle can be charged through the charging platform. The invention further discloses the charging platform matched with the landing gear. Through the design which is simple in structure and low in cost, good contact of the charging contact parts is ensured. The invention further provides an unmanned aerial vehicle cruising and charging system based on the unmanned aerial vehicle and the charging platform. The charging platform can be searched for the unmanned aerial vehicle through a cloud management server; and a flight path is set for the unmanned aerial vehicle.
Owner:浙江国正安全技术有限公司

Precision drip irrigation measuring and controlling system based on wireless sensor network

The invention discloses a precision drip irrigation measuring and controlling system based on a wireless sensor network. The system comprises a plurality of soil moisture statue monitoring nodes arranged within field monitoring ranges; each soil moisture statue monitoring node comprises a plurality of soil moisture content sensors buried in different underground depths and a soil moisture statue signal processing module; the soil moisture statue signal processing module is used for sending control information to next precision drip irrigation control nodes through a ZigBee wireless communication unit; and each precision drip irrigation control node comprises a ZigBee low-power-consumption and short-range wireless communication module, a singlechip and a control execution unit. By the system, three-dimensional monitoring on soil moisture content of underground plant roots in the different depths can be realized, and the measuring and the controlling on precision drip irrigation can be realized without the support of fixed networks. The system has the characteristics of rapid development, strong destruction resistance and the like, is convenient to install and maintain, and is particularly applicable to rural areas with poor signal converge. Moreover, the communication cost is lower when the system is used in a large scale.
Owner:SOUTH CHINA AGRI UNIV

Rear-placed combustor with annular porous medium head for ultramicro turbojet engine

Disclosed is a rear-placed combustor with an annular porous medium head for an ultramicro turbojet engine. An annular reflux structure is adopted for the combustor which is formed by a combustor box, a flame tube wall, a combustor outlet and the annular porous medium head. Air flow passes through a centrifugal compressor of the engine for compression, enters an annular cavity channel of the combustor, and then is mixed with gas fuel which is jetted in horizontally; premixed gas is pre-heated through the flame tube wall and then flows back to enter a flame tube through the annular porous medium head, and stable ignition is achieved; the whole mixed gas combustion process is finished in the flame tube, and high-temperature gas is discharged from the outlet of the rear-placed combustor; and then the high-temperature gas is discharged into air through a tail pipe after turbine blades of an impact engine does work. The combustor box, the flame tube wall and the combustor outlet are connected through bolts with high temperature glue sprayed on annular edges to guarantee the sealing. According to the combustor, features and advantages of stable flame of the annular porous medium head can be adapted to and played to the greatest extent, proneness to flameout of ultramicro combustors can be improved, so that the combustor can work for the ultramicro turbojet engine reliably and stably.
Owner:BEIHANG UNIV

Method for preparing phase-change-adjustable emulsion gel type fat substitute and application

The invention discloses a method for preparing a phase-change-adjustable emulsion gel type fat substitute and application and belongs to the field of grease and food processing. The preparation method comprises the following steps: taking an oil-soluble polysaccharide, an oil-soluble micromolecular gel, a water-soluble macromolecular gel and vegetable oil as raw materials, separately dissolving the oil-soluble polysaccharide, the oil-soluble micromolecular gel and the water-soluble macromolecular gel in a heated oil phase and a heated water phase, mixing and emulsifying an oil solution and a water solution to obtain an emulsion, and carrying out stirring and cooling to gelatinize the emulsion, thereby obtaining the emulsion gel type fat substitute. According to the method and the application, the oil-soluble polysaccharide is introduced into a system to reduce the consumption of the oil-soluble micromolecular gel, and the emulsion gel type fat substitute containing zero trans low-saturated fatty acid is prepared to replace the traditional plastic fat; and the whole oil content of emulsion gel is reduced by adding a water phase gelatinized by the water-soluble macromolecular gel, so that the emulsion gel type fat substitute is applicable to different application scenes.
Owner:JIANGNAN UNIV

Universal type digital intermediate frequency receiver

The invention discloses a digital intermediate frequency receiver. The digital intermediate frequency receiver comprises a multichannel analog to digital converter (ADC) module, a multichannel bridge connection module, a multichannel digital down-conversion application specific integrated circuit (ASIC) module, a multichannel field programmable gata array (FPGA) processing module, a multichannel digital signal processor (DSP) processing module, a multi-interface output module and a DSP general control module. A data output of the multichannel ADC module is connected with a data input of the multichannel bridge connection module, a data output of the multichannel bridge connection module is connected with a data input of the multichannel digital down-conversion ASIC module, and a data output of the multichannel digital down-conversion ASIC module is connected with a data input of the multichannel FPGA processing module. The multichannel FPGA processing module is connected with the multichannel DSP processing module by bothway multichannel data. The data output of the multichannel DSP processing module outputs the final result by the multi-interface output module. The universal type digital intermediate frequency receiver is good in generality, high in processing efficiency, low in cost, and beneficial to industrialization.
Owner:高攀峰

Agricultural irrigation monitoring system based on Internet of Things

The invention discloses an agricultural irrigation monitoring system based on the Internet of Things. The agricultural irrigation monitoring system based on the Internet of Things comprises multiple soil moisture content monitoring nodes distributed within a field monitoring range. Each soil moisture content monitoring node comprises multiple soil moisture content sensors which are buried underground in different levels and a soil moisture content signal processing module. The soil moisture content signal processing module sends controlling information to subordinate fine drop irrigation controlling nodes of the soil moisture content signal processing module through the Internet of Things. Each fine drop irrigation controlling node comprises a ZigBee low-power short-journey wireless communication module, a singlechip and a controlling and performing unit. The system can perform solid monitoring on soil moisture content underground roots of plants in multiple depths and a fixed network is not needed in order to achieve monitoring of fine drop irrigation work. The agricultural irrigation monitoring system based on the Internet of Things has the advantages of being rapid in spreading, strong in survivability, low in communication cost when used massively, convenient to install and maintain, especially suitable for countryside areas where signal cover is poor and the like.
Owner:NANJING LONGYUAN MICROELECTRONICS TECH CO LTD

Modulating method and control device of soft direct current power transmission modularized multi-level transverter

The invention discloses a modulating method and a control device of a soft direct current power transmission modularized multi-level transverter. The method comprises the steps of controlling the power as well as voltage and current in a closed-loop mode to obtain three-phase modulation waves; and according to the three-phase modulation wave or the modulation wave and the sub-module number, issued by a direct current control protective system, and the sub-module number put into each bridge arm and the interpolation increment of the putting number of each bridge arm sub-module, obtained by calculating the rated voltage of the sub-modules, overlapping a high-frequency interpolation increment on the sub-module number put on the low-frequency bridge arm by a high-frequency FPGA (field programmable gate array), thus obtaining the high-frequency bridge arm modulation command and realizing the high-level number output. The modulating method and the control device of the soft direct current power transmission modularized multi-level transverter can meet the modulation demands of the soft direct current power transmission modularized multi-level transverter, and can save software and hardware resources, and break through the limitations such as long control period, low frequency and low output level number of traditional digital controllers such as a DSP (digital signal processor), thus realizing the high-level number or even whole-level output under the low-frequency control, obviously reducing the output voltage harmonic waves and improving output electric energy quality.
Owner:XJ ELECTRIC +1

Gas turbine combustion-chamber for combusting ethanol fuel

The invention discloses a combustion chamber of a gas turbine burning ethanol fuel. The combustion chamber of the gas turbine burning ethanol fuel adopts a single tube cylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is welded with the combustion chamber cartridge receiver, which is used for introducing air current; the flame tube is welded or connected by threads between an outlet and the combustion chamber cartridge receiver; liquid ethanol is supplied to the combustion chamber through an ethanol supply path, and a fuel preparation system is formed by the ethanol supply path and a rotational flow device to complete atomization and evaporation of the ethanol; an electric spark lighter is inserted in the flame tube to realize ignition startup of the ethanol combustion chamber; the whole process of ethanol combustion is completed in the flame tube so as to exhaust high temperature fuel gas from the outlet at the end of the combustion chamber; air current distribution of the combustion chamber of the gas turbine is adjusted to adapt to and exert characteristics and advantages of the ethanol fuel to the maximum extent, thereby improving combustion efficiency of the ethanol combustion and reducing pollution emission, and contributing to realizing the aims of energy conservation and environmental protection; and the combustion chamber is a key part of a micro-gas turbine with biomass fuel, which can enlarge fuel adaptability and is convenient for popularization and application.
Owner:BEIHANG UNIV

Portable communication device for detecting electric transmission and transformation equipment and data transmission method of portable communication device

The invention provides a portable communication device for detecting electric transmission and transformation equipment and a data transmission method of the portable communication device. The communication device comprises a detection data collection unit, a voice interaction unit, different types of network signal transmission units, a detection date collection unit, a multi-network intelligent matching communication unit and a data processing unit. According to the portable communication device, images, operation states, fault parts and detection data of equipment dispersed on various inspection sites can be dynamically transmitted to a remote operation and maintenance monitoring and repairing center in a wireless communication manner in real time; various information on the scene is provided for technical experts and fault diagnosis experts dispersed in different places; the audio and video consultation decision is carried out by remote experts and site operation personnel; the fault part and the fault reason can be visually, rapidly, accurately and efficiently analyzed and judged; the diagnosis accuracy and the repairing efficiency are improved; various potential losses which can be caused by the fault of the electric transmission and transformation equipment are reduced to the maximal extent.
Owner:STATE GRID CORP OF CHINA +2
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