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102results about How to "Change status" patented technology

Displacement sensor fault detection circuit and control system thereof

ActiveCN103884265AFast detection of short circuit faultsQuick checkElectrical testingUsing electrical meansControl systemPower circuits
The invention discloses a displacement sensor fault detection circuit and a control system thereof. The displacement sensor fault detection circuit comprises a power circuit, a short-circuit fault detection circuit, an open-circuit fault detection circuit and a power supply failure fault detection circuit, and further comprises a power supply Vcc1, a power supply Vcc2, a resistor R1, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2 and a transistor Q3. The input end of the short-circuit fault detection circuit is the signal input end of the displacement sensor fault detection circuit and is grounded through the R1 and the Vcc1, and the output end of the short-circuit fault detection circuit is the signal output end of the displacement sensor fault detection circuit. The base electrode of the Q1 is connected to the signal input end through the R3, the emitting electrode of the Q1 is connected to the positive electrode of the Vcc1, and the collector electrode of the Q1 is grounded through the R4. The base electrode of the Q2 is connected with the collector electrode of the Q1, the emitting electrode of the Q2 is connected to the positive electrode of the Vcc1, and the collector electrode of the Q2 is connected to the signal output end. The emitting electrode of the Q3 is connected with the positive electrode of the Vcc1, the collector electrode of the Q3 is connected with the signal output end, and the base electrode of the Q3 is connected with the positive electrode of the Vcc2 through the resistor R5.
Owner:WUJIANG LYUKONG ELECTRIC CONTROL TECH

Blockage removal method and device for microwave hydrate for gas well

The invention discloses a blockage removal method and a blockage removal device for a microwave hydrate for a gas well. The deicing technology adopted by the conventional natural gas wells and carbon dioxide gas wells is that: 1, a well mouth or a gas pipeline is heated by adopting a water jacket furnace; 2, methanol and other inhibitors are added into the gas wells; 3, the carbon dioxide gas is heated by means of terrestrial heat of the stratum; and 4, an oil pipe gas recovery mode is changed into a sleeve gas recovery mode. The deicing technology has the disadvantages of severe environmental contamination, complex technology, high labor intensity and strict technical requirement. The blockage removal method is that: a high-frequency microwave power source is adopted and is guided into a well tube through a wave head pipeline, and a waveguide channel is formed by the well wall tube; and microwave electromagnetic waves are transmitted to a hydrate freezing blockage point in an enclosing way, so that the freezing blockage point is irradiated by the high-frequency electromagnetic waves, gets energy, raises the temperature and is dissolved. Therefore, the freezing blockage problem of the hydrate is solved. The blockage removal method is used for unfreezing the gas wells.
Owner:大庆市新中瑞环保有限公司

Bean paste dipping powder and preparation method thereof

The invention provides bean paste dipping powder and a preparation method thereof and solves the problems of fixed form, difficulty in transportation, single sales scope and use form, big limitation to popularization and the like. The bean paste dipping powder provided by the invention comprises the following components in parts by weight: 5-30 parts of bean paste powder, 25-70 parts of chili powder, 5-20 parts of chicken essence powder, 1-5 parts of Chinese prickly ash powder, 2-12 parts of vegetable oil, 1-3 parts of sesame seeds, 0.5-5 parts of white granulated sugar and 0.5-10 parts of monosodium glutamate, wherein the bean paste powder is Pixian bean paste powder. The preparation method of the bean paste dipping powder comprises the following steps: firstly, sequentially performing selection of foreign matters and impurities and drying treatment on bean paste; then mixing the obtained bean paste with other materials uniformly; and finally performing sealing and radiation sterilization. The bean paste dipping powder has a better flavor and is more convenient to transport and use, and the preparation method is favorable for enlarging deep processing of the bean paste, obviouslyenhances the flavor of existing dipping powder, expands the range of use of the bean paste and is suitable for popularization and use.
Owner:SICHUAN PROVINCE PIXIAN COUNTY BEAN PASTE

Non-diffractive beam direction adjustable reconfigurable Bessel antenna

The invention relates to the field of microwave antennas, solves the problem in the prior art that the beseel beam direction cannot be effectively regulated in real time under the fixed microwave frequency, and discloses a non-diffractive beam direction adjustable reconfigurable bessel antenna which comprises a radial waveguide, a coaxial feeder and a reconfigurable impedance surface structure andalso comprises adjustable devices arranged in the reconfigurable impedance surface structure. The reconfigurable impedance surface structure is a periodic patch structure. The reconfigurable impedance surface structure is divided into four reconfiguration quadrants. The adjustable devices are arranged between patch slots on the non-axis in the reconfiguration quadrants. The state of the adjustable device switches of different quadrants of the reconfigurable impedance surface structure is changed by designing the reconfigurable impedance surface structure and setting different bias voltage ofthe reconfiguration quadrants so as to realize real-time deflection of the beam direction. The reconfigurable impedance surface structure is simple and suitable for non-diffractive beam transmission in different directions of the near field so that the antenna can be widely used in wireless energy transmission, near-field detection, medical imaging, secret communication and other fields.
Owner:SICHUAN UNIV

Dust settling equipment with spray end capable of swinging back and forth for atmospheric dust pollution treatment

The invention discloses dust settling equipment with a spray end capable of swinging back and forth for atmospheric dust pollution treatment, comprising a device body, a handle, an electric telescopic rod, a spray barrel and a water pump. The handle is fixedly mounted at the left end of the device body, the electric telescopic rod is fixedly mounted in the device body, a one-way circulating valve is fixedly installed on a blow-off pipe, a vertical rod is installed on the inner side of an extrusion block, a water conveying pipe is installed below the left end of the spray barrel, the end of the water conveying pipe is fixedly installed on the side of the water pump, a fixed toothed plate is installed at the lower end of a positioning gear ring, and the side of the lower end of the fixed toothed plate is fixedly mounted at the upper end of the device body. According to the dust falling equipment with the spray end capable of swinging back and forth for atmospheric dust pollution treatment, the overall spray range can be enlarged in the spray type dust falling process, the working efficiency during atmospheric dust treatment is improved, and meanwhile, dust on the ground can be well absorbed and removed in the spray type dust falling process.
Owner:聊城市环科院检测有限公司

Low-voltage network electric pole

The invention relates to a low-voltage network electric pole. The low-voltage network electric pole comprises a pole body. The pole body comprises a supporting core column, a resin-soaking cloth layer is arranged on the outer surface of the supporting core column, a protective layer is arranged on the outer surface of the resin-soaking cloth layer, and the resin-soaking cloth layer is fiber reinforced polymer cloth or carbon fiber cloth or glass fiber cloth or non-woven cloth soaked with resin and is tightly wound on the outer surface of the supporting core column after being molten. A base fixedly connected with the supporting core column is arranged at the bottom of the pole body, and a wire frame pole fixedly connected with the supporting core column is arranged on the upper portion of the pole body. The supporting core column comprises the following raw materials of, by weight, 40-60 parts of Ti, 40-60 parts of Al, 5-10 parts of Cr, 1-3 parts of Mn, 8-10 parts of tetrapod-shaped ZnO whiskers and 1-4 parts of mixed rare earth, the length of the tetrapod-shaped ZnO whiskers is 10-12 micrometers, and the root diameter of the tetrapod-shaped ZnO whiskers is 1-1.5 micrometers. The low-voltage network electric pole is reasonable in structural design, high in strength, good in anti-bending performance and light in weight. A wire erecting rod is fixedly connected with the supporting core column, and the reliability of connection is guaranteed.
Owner:STATE GRID SHANDONG ELECTRIC POWER CO BINZHOU CITY BINCHENG DISTRICT POWER SUPPLY CO

LED lamp overheat protection circuit

An embodiment of the invention discloses an LED lamp overheat protection circuit comprising a thermistor, a first triode, a first voltage dividing resistor, a second triode, a relay, an LED driving module, and an LED lamp. One end of the first voltage dividing resistor is connected to the positive electrode of a power supply, and the other end of the first voltage dividing resistor is connected with one end of the thermistor. The other end of the thermistor is connected to the negative electrode of the power supply. One end of the thermistor is further connected with the base of the first triode. The emitter of the first triode is connected to the negative electrode of the power supply. The collector of the first triode is connected with the base of the second triode. The collector of the second triode is connected with the GND end of the relay. The emitter of the second triode is connected to the negative electrode of the power supply. The common end of the relay is connected to the positive electrode of the power supply. The normally closed end of the relay is connected with the LED driving module, and the LED driving module is connected with an LED lamp. The thermistor is used for detecting the temperature of the LED driving module and the temperature of the LED lamp. By adopting the LED lamp overheat protection circuit of the invention, the LED lamp can be turned off when the temperature of the LED lamp is too high, and the safety of the LED lamp is improved.
Owner:OCEANKING DONGGUAN LIGHTING TECH +2

Remote control and remote communication positioning method and system based on power consumption information acquisition system

The invention relates to an equipment state acquisition method based on a power consumption information acquisition system. A master station, a concentrator and a remote control and remote communication positioning module are included; various remote communication interfaces of the concentrator are respectively connected to a remote control and remote communication positioning module; the alarm output end of the remote control and remote communication positioning module is connected with the remote communication end of the concentrator; the remote control and remote communication positioning module comprises multiple remote communication interfaces and multiple remote control interfaces; and various remote communication interfaces and remote control interfaces are respectively connected toa switch. The acquisition method comprises the steps of: periodically acquiring the remote communication input state of the remote communication interfaces, when the switch state is changed, detecting that remote communication is deflected by the remote control and remote communication positioning module, uploading switching information to the concentrator according to the mode set by the system,and sending to the master station by the concentrator. According to the method in the invention, the remote communication interfaces and the remote control interfaces are expanded through the remotecontrol and remote communication positioning module; the fact that various equipment switches are accessed to the master station in a unified manner is realized; the switch state can be obtained in real time; and furthermore, the equipment switches also can be remotely controlled.
Owner:STATE GRID FUJIAN ELECTRIC POWER CO LTD +4

Scroll compressor and control method thereof

The invention aims to provide a scroll compressor and a control method thereof. The scroll compressor and the control method thereof mainly aim to solve the problem that two compression cavities of an asymmetric scroll compressor are different in pressure and air leakage occurs easily in the enthalpy addition process. The scroll compressor comprises a first compression cavity, a second compression cavity and an enthalpy-adding air inlet channel, wherein the first compression cavity and the second compression cavity can alternate in air suction and air exhaust; the enthalpy-adding air inlet channel is connected to the first compression cavity and the second compression cavity through a control device, and the control device is used for enabling the first compression cavity and the second compression cavity to be communicated with the enthalpy-adding air inlet channel in the enthalpy addition process and enabling the first compression cavity and the second compression cavity to be disconnected when enthalpy addition stops. The first compression cavity and the second compression cavity are disconnected when enthalpy addition stops, and therefore the air leakage problem occurring when enthalpy addition stops can be effectively solved.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION

Scroll plate assembly, scroll compressor and air conditioner

The invention relates to the technical field of compressors, and provides a scroll plate assembly, a scroll compressor and an air conditioner. The scroll plate assembly comprises a static scroll plate, and an air inlet hole, an exhaust hole and an oil injection channel are formed in the static scroll plate. A movable scroll plate is meshed with the static scroll plate, a working chamber is formed between the movable scroll plate and the static scroll plate, an oil injection groove communicated with a back pressure chamber of the scroll compressor is formed in the movable scroll plate, and the movable scroll plate is configured to translate relative to the static scroll plate so as to compress a gas entering the working chamber. The oil injection channel is intermittently communicated with the oil injection groove and the working chamber, so that oil in the back pressure camber is intermittently injected into the working chamber under the action of the pressure difference between the back pressure chamber and the working chamber. According to the technical scheme, the gas in the working chamber can be effectively prevented from leaking to the back pressure chamber, so that the flow loss of the gas is reduced in the working process of the scroll plate assembly, and the scroll compressor is promoted to improve the energy efficiency.
Owner:ANHUI MEIZHI PRECISION MFG

Preparation method and application of nitrogen-doped self-supporting nanofiber membrane

The invention discloses a preparation method and application of a nitrogen-doped self-supporting nanofiber membrane. The preparation method of the nitrogen-doped self-supporting nanofiber membrane comprises the following steps: S1, accurately weighing a solute and a solvent, placing the solute and the solvent in an oil bath pan at 40-80 DEG C, and stirring for 5-20 hours at a constant temperature to prepare a spinning solution; S2, preparing the spinning solution prepared in the S1 into a composite nanofiber membrane, placing the composite nanofiber membrane in a drying box to remove a solvent, cutting the composite nanofiber membrane into a certain size, and pressing the fiber membrane by using a graphite sheet with a smooth surface; S3, putting the fiber membrane obtained in S2 into a quartz tube furnace, and carrying out heat preservation for 1-2 hours in an air atmosphere at 260-280 DEG C, then carrying out heat preservation for 1-3 hours in a nitrogen atmosphere of 600-800 DEG C, and carrying out carbonization treatment, and after the reaction is finished, cooling along with the furnace to room temperature to obtain the nitrogen-doped self-supporting nanofiber membrane. The nitrogen-doped self-supporting nanofiber membrane prepared by the method has high storage capacity and high electrochemical performance, and can be directly used as an SIB negative electrode material.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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