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79results about How to "Has industrial utilization value" patented technology

Repeater suitable for TDD system mobile communication system

The station includes a RF switch array (RFSA), a time synchronization controller (TSC), a donor antenna and a business antenna, a low noise amplifier (LNA) co-used by the up-going and down-going links, a digital gain controller (DGC), a linear power amplifier (LPA) and a coupler. Under control of the time synchronization control signal, the RFSA sets the LNA, DGC and LPA at the up-going and down-going state to form the up-going and down-going RF amplification link via time-sharing. At the donor antenna end, the coupler connects to the RFSA to pickup the up-going and down-going signals as the input of the TSC and DGC. Due to the up-going and down-going links share the amplifier, the volume and cost are reduced.
Owner:北京东方信联无线通信有限公司

Cable-type welding wire double-twisting stranding machine

The invention relates to a welding wire processing device, particularly to a cable-type welding wire double-twisting stranding machine. The cable-type welding wire double-twisting stranding machine comprises a stranding unit, an unwinding unit, a sizing and stress relieving unit, a traction unit and a winding unit, wherein two main shafts with center holes and side holes of the stranding unit are fixedly provided with two arched rocker arms which are arranged oppositely, the arm ends of the two arched rocker arms which are arranged oppositely are provided with arched belts which are connected with the two arched rocker arms in which threading inclined holes are formed, the inner sides of the arched belts are provided with a plurality of wire through holes, and the stranding unit, the traction unit and the winding unit are respectively driven by a standing motor, a traction motor and a winding motor. The cable-type welding wire double-twisting stranding machine has the advantages of being high in production efficiency and small in vibration noise.
Owner:江苏科为焊业有限公司 +1

Squelch control method of automatic gain power amplifier chain and circuit

The invention relates to a squelch control circuit, in particular to a squelch control method of an automatic gain power amplifier chain and a circuit. The method comprises the following steps of: (1) sampling an input signal of nth amplifier in the automatic gain power amplifying chain; (2) detecting the input signal into a direct-current voltage signal; (3) carrying out negative feedback amplification on the direct-current voltage signal; (4) comparing the direct-current voltage signal through the negative feedback amplification with a direct-current voltage with preset squelch ratio; and (5) if the direct-current voltage signal is more than or equal to the direct-current voltage with the preset squelch ratio, controlling the power amplifying chain to disconnect; if the direct-current voltage signal is less than the direct-current voltage with the preset squelch ratio, controlling the power amplifying chain to connect. In the invention, a direct-current control signal sent to an electric control attenuator is used as a squelch signal, and a detection circuit does not need to be arranged independently; and since the negative feedback amplification is carried out on the direct-current control signal, a characteristic curve of a detector is justly overturned, so that the problems that a judgment window area of the existing squelch control circuit is too narrow and non-linear are overcome, and the squelch sensitivity is greatly improved.
Owner:BEIJING BBEF SCI & TECH

Centralized processing device of phenol-containing waste gas and sulfur-containing waste gas, and processing method

The invention discloses a centralized processing device of phenol-containing waste gas and sulfur-containing waste gas, and processing method, and belongs to the field of environmental protection waste gas treatment. The centralized processing device comprises a waste gas inlet (1), a discharge pipe (2), a valve (3), a gas-collecting hood (4), a negative pressure adjustment valve (5), buffer boards (6), an exhaust pump (7), active carbon absorption layers (8), and a chimney (9). According to the processing method, waste gas is delivered upward through the buffer boards (6), after collision and bump with the buffer boards, tar and water are separated, flow automatically into the bottom of the gas-collecting hood (4), and are discharged via the discharge pipe (2); separated gas is subjected to absorption and purification by the active carbon absorption layers (8), and then is discharged into the atmosphere via the chimney (9). The centralized processing device and the processing method are capable of solving emission problems of phenol waste water or sulfur-containing waste gas generated in coal gas production processes, working environment of workers is improved, and pollution on the atmosphere is reduced.
Owner:洛阳三信石化设备有限公司

Application of cedrol and cedrol derivatives to preparation of drugs for promoting hair growth and relieving hair loss

The invention relates to the technical field of natural products, in particular to an application of cedrol and cedrol derivatives or salts to preparation of drugs for promoting hair growth and relieving hair loss. A test result shows that cedrol can promote hair of a normally unhairing mouse to grow and can effectively relieve unhairing symptoms of the mouse after chemotherapy and safety of drug use is proved. When cedrol is subjected to transdermal administration with a daily dose of 100 mg/kg-400 mg/kg, the hair growing effect is remarkably better than that of a hair growing drug minoxidil which is approved by FDA (Food and Drug Administration) and has appeared on the market of China; when cedrol is subjected to administration with a daily dose of 50 mg/kg-200 mg/kg, the unhairing symptoms can be relieved, and the effect is obvious when compared with that of a blank control group. Cedrol not only has the effects of promoting hair growth and preventing hair loss after chemotherapy, but also has the advantages of being prepared from easily available raw materials, natural, non-irritant and the like, and can be taken as a substitute product of a hair growth medicine with high cost or side effects and a product for preventing hair loss and promoting hair growth. According to the invention, demands of people for hair loss preventing drugs can be met, and troubles of people due to hair loss are eliminated.
Owner:辽宁新中现代医药有限公司

Wheel pair intelligent cleaning and paint removing device

The invention discloses a wheel pair intelligent cleaning and paint removing device. The device comprises a wheel feeding mechanism, a wheel discharging mechanism, a wheel rotating mechanism, a stop mechanism, a cleaning and paint removing machine nozzle, a cleaning machine nozzle, a mechanical arm and an electric control system. The mechanical arm is adopted to carry with the cleaning and paint removing machine nozzle, so that the actions are flexible, the flexibility is high, the cleaning and paint removing operation for rail traffic vehicles such as all domestic bullet trains, locomotives and metros can be met, and the application range is wide. The height and the transverse deviation of wheel pairs are detected through sensors, and the coordinate space position compensation of the mechanical arm is automatically performed, so that the intelligence of the cleaning and paint removing process is realized, and the working efficiency is improved. Particles dissoluble in water can be adopted as a paint removing agent, so that the operation is environment-friendly, and the health of operators is facilitated. Dust generated in the cleaning and paint removing operation is removed by a ventilation and dust removing system, so that the environment is protected, and the flying dust pollution cannot occur. A sewage treatment system is adopted without causing the water pollution.
Owner:天津远程华瑞工业技术有限公司 +1

Remote keying method and device for stepper motor driver based on can communication

The invention relates to the remote key control of a stepping motor driver, and particularly relates to a remote keying method and a remote keying device of the stepping motor driver based on CAN (Controller Area Network) communication. The device comprises a key, a control end signal processor, a CAN communication network and a controlled end signal processor, wherein the key is connected with the control end signal processor, the control end signal processor processes key signals as 'pressed down' or ' lifted up' code signals and sends the 'pressed down' or ' lifted up' code signals to the CAN communication network, and the controlled end signal processor receives the 'press down' or 'lifted up' code signals sent from the CAN communication network, decodes, synthesizes and restores the 'press down' or 'lifted up' code signals as the key signals, generates control signals and sends the control signals to the stepping motor driver. The remote keying device of the stepping motor driverbased on CAN communication successfully achieves manual remote keying of an antenna of a large-power long-wavelength signal transmitter, realizes a control distance as long as several kilometers, totally satisfies the demand of the manual remote keying of the antenna regulation of the large-power long-wavelength signal transmitter, ensures stable application in a large-power high-frequency field high-interference environment, and has good effect.
Owner:BEIJING BBEF SCI & TECH

High-efficiency waste heat utilization device for cylinder surface of rotary kiln

The invention relates to a high-efficiency waste heat utilization device for a cylinder surface of a rotary kiln. The high-efficiency waste heat utilization device comprises a rotary kiln cylinder body, a heat collecting hood and a heat exchange tube bundle, wherein the heat collecting hood is arranged on the periphery of the rotary kiln cylinder body; the heat exchange tube bundle is arranged between the rotary kiln cylinder body and the heat collecting hood; and a covering surface of the heat collecting hood on a cross section of the rotary kiln body is not smaller than one second of the cross section of the rotary kiln cylinder body. The high-efficiency waste heat utilization device further comprises a deflector which is vertically arranged at the lower part of the heat collecting hood; an electric shutter adjusting valve is additionally arranged at the top of the heat collecting hood; a temperature sensor is additionally arranged inside the heat collecting hood; and the electric shutter adjusting valve and the temperature sensor form a control system. According to the high-efficiency waste heat utilization device disclosed by the invention, the problem that that waste heat resources of a traditional heat acquiring device on the cylinder surface of a traditional rotary kiln body is low in utilization rate is solved and the utilization rate of the waste heat resources on the cylinder surface of the rotary kiln body is increased.
Owner:LUOYANG BLUE SEA INDAL

Fixed parts for circuit board

A fixed part for a circuit board is used for fixing the circuit board on the bottom plate of the crate of the electronic device, and the fixed part comprises a hollow shell, the top and the bottom of the hollow shell are respectively fixed on the bottom plate of the crate to support the circuit board. The hollow shell comprises a first end part and a second end part in the horizontal direction and the first end part is rotationally combined with a shaft, the top of the shaft exposes from the top of the hollow shell, and the top of the shaft is provided with a pressing arm, the terminal end of the pressing arm extends to the second part. By rotating the shaft, the terminal end of the pressing end presses the circuit board, thereby fixing the circuit board on the bottom plate of the crate.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO

Oxygen-rich type synergism fuel economizer

InactiveCN102121442ABurn fullyTwo reduction reactions take place in the combustion chamberNon-fuel substance addition to fuelInternal combustion piston enginesTransformerGasoline
The invention relates to an oxygen-rich type synergism fuel economizer, and in particular to a fuel economizer device applied to a gasoline engine and a diesel engine. The fuel economizer mainly comprises a shell, a power switch, a transformer, a circuit board, an air pump, an oxygen-rich generator and an air pipe, wherein the circuit board, the air pump, a motor and the oxygen-rich generator are all fixed inside the shell; the fuel economizer is characterized in that the transformer is added in front of the motor; the motor is arranged at the same level position at the left side of the transformer and connected with the transformer through a wire; the oxygen-rich generator is arranged at the left side of the transformer; the oxygen-rich generator is connected with an air inlet end of the air pump through the air pipe; the air pump is arranged above the transformer; the air pump is connected with the air pipe; the air pipe is connected with the air inlet of an automobile; the circuit board is arranged at the left side of the air pump and provided with one or more than one working indicating lamp; and lamp bulbs of the working indicating lamp are stretched out from a through hole on the shell. Since the fuel oil in the motor is promoted by ozone to react and burn fully, the fuel oil utilization ratio is improved, and the effect of energy saving and emission reduction is achieved; moreover, the product has the advantages of simple structure and low manufacturing cost.
Owner:郑世军

Automatic hot-cutting side gate injection mold, and gate cutter and injection molding process thereof

ActiveCN102241110AExtended service lifeAvoid problems with cores before collisionInjection molding machineInjection molding process
The invention relates to an injection mold, in particular to an automatic hot-cutting side gate injection mold. The injection mold comprises a front mold fixing plate, a front mold core, a front mold plate, a rear mold core, a rear mold plate which is used for fixing the rear mold core and a rear mold fixing plate which is provided with a pushing hole, wherein the front mold plate and the rear mold core are used for fixing the front mold core; a part cavity, a pouring channel and a gate are formed between the front mold core and the rear mold core; and a gate shearing device and a product push-out device are arranged below the rear mold plate. The injection mold is characterized in that: a material handle push-out device is arranged on the rear mold plate; the product push-out device is arranged between the rear mold plate and the rear mold fixing plate; the gate shearing device is arranged between the product push-out device and the rear mold fixing plate; and the material handle push-out device is arranged on the rear mold plate. The automatic hot-cutting side gate injection mold is suitable for producing injection molding products which have complicated shapes and strict appearance requirements; and residues do not exist at an incision, subsequent secondary machining is not required, the mold is not required to be maintained and welded, and a gate cutter has long service life.
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