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89results about How to "Short weight" patented technology

Micromechanical gyroscope self-exciting driving and demodulating apparatus

The invention provides a self-excitation drive and demodulation device for a microelectron-mechanical gyro (MEMS GYRO), which is a system that can be used for realizing the self-excitation drive and angular velocity demodulation of the microelectron-mechanical gyro. The device mainly comprises an input signal interface circuit, a singlechip chip, an upper computer communication module, an angular velocity display module and an automatic gain feedback module. A loop acquires vibration displacement voltage signals of a drive mass block and a detection mass block of the microelectron-mechanical gyro by the input signal interface circuit; the singlechip chip extracts and generates a gain control signal respectively by amplitude and an automatic gain control algorithm, and transmits the gain control signal to an automatic gain control system; the automatic gain control system generates a variable voltage according to the gain control signal and a drive displacement signal transmitted by the input signal interface circuit, feedbacks the variable voltage to a drive end of the gyro so as to realize the adjustment on a driving signal of the gyro, and calculates the input angular velocity inside the singlechip simultaneously. The device realizes the integrated design of the self-excitation drive and angular velocity demodulation of the microelectron-mechanical gyro, reduces the volume and weight of the microelectron-mechanical gyro, and reduces the power consumption.
Owner:BEIHANG UNIV

Method for preparing auricularia polytricha culture material

The invention relates to a method for preparing auricularia polytricha culture material, needing the following materials by the weight percent: 35-55 of cotton seed hulls, 25-45 of rice bran, 10-16 percent of mixed wood dust, 1.5-2 percent of corn cob, 0.5-1 of straw, 0.5-1 calcium superphosphate, 0.5-1 of plaster, 1.5-2 of beanstalk powder, 0.1-0.3 of oxygen increasing powder, 0.1-0.3 of nitro-phosphor-potash compound fertilizer, 0.1-0.3 of mold resisting liquid and 0.5-0.8 of calcium superphosphate. The method for preparing auricularia polytricha culture material comprises the following steps: the cotton seed hulls, the rice bran, the mixed wood dust, the corn cob, the straw and the beanstalk powder are taken according to the weight percent, mixed together and poured into a pulverizer to be pulverized into mixture with granules of about 80 meshes; the mixture is taken out; the superphosphate, the plaster, the oxygen increasing powder, the nitro-phosphor-potash compound fertilizer, the mold resisting liquid and the calcium superphosphate are added to the mixture; the new mixture is poured into a stirrer to be stirred for about 70 min; the stirred mixture is taken out and then put into a fermentation tank; water is added to the stirred mixture at the ratio of 1:1.2-1.3; and the stirred mixture is stirred again and stacked; and the stacked mixture is sealed by a thick plastic film to be fermented for 10-12h, therefore, the qualified auricularia polytricha culture material is prepared.
Owner:孙伟

Rapid cooling type aircraft ground air conditioning unit and control method thereof

The invention discloses a rapid cooling type aircraft ground air conditioning unit and a control method of the rapid cooling type aircraft ground air conditioning unit. The highest cooling speed and the largest cold quantity input improve the rapid cooling and cold supplying capacity of the aircraft ground air conditioning unit, processed fresh air with a certain flow, cleanliness, proper temperature and high hydrostatic pressure is provided rapidly for an aircraft, the fresh air is fed to a cabin of the aircraft through a special air feeding hose, the fastest and best cooling effect is achieved for the cabin of the aircraft which stops at an aircraft boarding bridge for a short time, physiological requirements of staff in the cabin of the aircraft are met, high comfort level is achieved, the cooling requirements of precision devices in the cabin are met, a comfortable environment is provided for the staff in the cabin and aircraft operators, the metal state of the aircraft operators is improved, and the safety of driving the aircraft is improved. Meanwhile, fuel consumption produced when the aircraft waits on the ground is reduced, the service life of a self-matched expensive air conditioning system of the aircraft is prolonged, the pollution to air environment of an airport is reduced, and high economic and social benefits are achieved.
Owner:GUANGDONG SHENLING ENVIRONMENT SYST CO LTD

Roadway advanced supporting supports capable of assisting machinery to move

The invention provides roadway advanced supporting supports capable of assisting machinery to move. The roadway advanced supporting supports capable of assisting the machinery to move solve the problems that repeated supporting, complex operation and low working efficiency in the prior art for a floppy coal top roadway and a long-distance advanced supporting roadway. The roadway advanced supporting supports capable of assisting the machinery to move comprise advanced supporting supports which are composed of top beams, bases, and hydraulic upright columns which are connected between the top beams and the bases in a hinge joint mode and an auxiliary moving mechanism. The roadway advanced supporting supports capable of assisting the machinery to move are characterized in that the lower portions of the two hydraulic upright columns which are connected on one base in a hinge joint mode are fixed together through a fastening support, the lateral end of each top beam is connected with a top protective plate in a hinge joint mode through a telescope hydraulic cylinder, the two advanced supporting supports are a set in parallel in a transverse mode, a plurality of sets of advanced supporting supports are longitudinally continuously arranged along a roadway, and therefore supporting to a top plate is formed; and moving support mechanical arms are arranged between a set of two advanced supporting supports to be moved, are matched with a transport cart, and move each advanced supporting support along the roadway in a longitudinal sequence. The roadway advanced supporting supports capable of assisting the machinery to move are reasonable in structure and design, stable in supporting, convenient to operate, safe to use, and capable of reducing the effect of advanced supporting operation to working face coal mining production.
Owner:SHENYANG TIAN AN TECH CO LTD

Movable fabricated independent steel box foundation

The invention discloses a movable fabricated independent steel box foundation comprising a box column, four steel I-beams and steel plates. The box column are fixedly connected with the steel I-beams, the steel plates are connected with the box column and the steel I-beams respectively to form an integral external enclosure structure, and lifting lugs at four corners of the steel box foundation are connected with the steel plates. A hole which can be opened and closed randomly is reserved in each steel plate, and counter weights can be added into and removed from a steel box to the benefit of movement. Height of the box column can be determined according to buried depth of the foundation, and the four steel I-beams are connected into a cross. The movable fabricated independent steel box foundation is suitable for temporary lightweight steel construction buildings or lightweight steel constructions with foundations capable of being moved according to requirements. Compared with a reinforced concrete foundation, the movable fabricated independent steel box foundation comprising a box column is simple to produce, free of supporting plates, short in construction period, light in dead weight, convenient to lift and move, reusable and capable of avoiding waste, lowering cost and saving resources, and plays a positive role in environmental protection.
Owner:SHENYANG JIANZHU UNIVERSITY

In-situ quick precooling machine for fruits

The invention relates to an in-situ quick precooling machine for fruits. The in-situ quick precooling machine for fruits comprises a box body, a refrigerating device, a dehumidifying device, a controldevice and a sterilizing device, wherein a precooling chamber and a refrigerating chamber are arranged in the box body; the refrigerating device comprises a compressor, a condenser, a liquid storingdrum and an evaporator sequentially connected by pipelines; the compressor, the condenser and the liquid storing drum are arranged in the refrigerating chamber; the evaporator is arranged in the precooling chamber; the evaporator comprises evaporating finned tubes and fans; the dehumidifying device comprises an electric heater and a water discharge valve; the electric heater is arranged on one side of the evaporating finned tubes; the water discharge valve is arranged at the bottom of the precooling chamber; and the sterilizing device is arranged in the precooling chamber. The in-situ quick precooling machine for fruits has high refrigerating speed, has dehumidifying and sterilizing functions, can effectively maintain the after-harvest quality of berries, and is light in weight of completemachine and convenient to carry and move in the field.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES +1

Ka-band dual-mode airborne broadband satellite communication system

The Ka-band dual-mode airborne broadband satellite communication system disclosed by the invention is wide in beam scanning range and high in satellite capturing speed, and is realized through the following technical scheme: an antenna control management unit performs information interaction with a modulation and demodulation management unit according to parameters input by an aircraft inertial navigation system, controls a beam tracking satellite alignment process and beam capturing, and performs satellite tracking and satellite capturing; the satellite is locked, forward channel and backward channel information is obtained, and satellite capturing and satellite alignment of the antenna are completed; the airborne phased-array antenna cooperates with the modulation and demodulation management unit to establish channel connection with a master station to complete network access, the modulation and demodulation management unit receives IP data from the access Internet, carries out framing, coding, modulation, encryption and protocol processing, converts the IP data into intermediate frequency signals, and sends the intermediate frequency signals to the master station. The signal is converted into a Ka satellite radio frequency signal through a built-in Ka up-conversion module of the airborne phased-array antenna housing for emission; and the modulation-demodulation management unit receives a downlink Ka satellite radio frequency signal, the downlink Ka satellite radio frequency signal is converted into an intermediate frequency signal through a Ka down-conversion module arranged in the airborne phased-array antenna housing, the intermediate frequency signal is sent to the modulation-demodulation management unit to recover an IP data stream, the IP data stream is sent to an airborne user through a passenger cabin wireless local area network, and the communication service of the airborne Ka broadband satellite communication system is realized.
Owner:10TH RES INST OF CETC

Disposable environment-friendly heat preservation cover of molten iron conveying tank and use method

ActiveCN108788112AHigh mechanical strength requirementsWeight increaseMelt-holding vesselsSlagEngineering
The invention discloses a disposable environment-friendly heat preservation cover of a molten iron conveying tank. The heat preservation cover comprises a cover body, the cover body is composed of a bottom plate, supporting rings, a first supporting frame, a second supporting frame, a cover plate on the supporting rings and a carbon heat preservation layer; hooks are connected to two symmetric sides of the supporting rings, a lifting hook frame is connected to the hooks, and structural parts forming the heat preservation cover are all made of waste steel. A use method comprises the steps thatthe heat preservation cover is lifted to an empty molten iron conveying tank, the cover body is placed in the molten iron conveying tank, the molten iron conveying tank is conveyed to a tank preparingroom, the tank body condition is subject to checking and maintaining, the heat preservation cover does not need to be taken down for molten iron loading, tank pouring is carried out, and the above steps are repeated. The heat preservation cover has the beneficial effects that the structure is simple, the material is cheap and easy to obtain, use is convenient, the heat preservation property is excellent, a metal material of a cover body structure is subject to online molten recycling, heat preservation material ash online molten iron slag modification is achieved, and full-process heat preservation of the molten iron conveying container is achieved.
Owner:武汉钢铁有限公司
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