91results about How to "Solve hidden dangers" patented technology

The invention discloses a surrounding body device and method for inhibiting vibration of a retaining structure. The device comprises a surrounding body capable of surrounding the retaining structure.The surrounding body is further provided with a lifting device. The lifting device is provided with an air inlet runner and an exhaust runner. The lifting device drives the surrounding body to float vertically through exhausting of the exhaust runner. Due to the fact that the lifting device drives the surrounding body to sweep vertically, the attack angle and the pneumatic appearance of tower sections at different heights can be changed continuously in a floating height range, formation of vortexes on the two sides behind a tower is hindered, the consistency of the disengaging frequency of upper and lower vortexes of the tower is disorganized, and generation of vortex-induced vibration is inhibited. In addition, when the surrounding body floats and sinks vertically, the surrounding body can also swing and collide with the outer wall of the tower to damage boundary layer stream around near the tower, formation of vortexes can also be hindered, and vibration is inhibited.

The invention discloses a method for optimizing an intelligent substation virtual terminal design. The method specially comprises the following steps of (1) creating typical intervals; (2) defining a GOOSE input virtual terminal and an SV input virtual terminal in advance in an ICD (IED Capability Description) file of an intelligent electronic device (IED), creating an Inputs node under an LLN0 logic node under an access point of the ICD file of the intelligent electronic device, and adding the GOOSE input virtual terminal and the SV input virtual terminal into the Inputs node; (3) establishing the connection relationship between the GOOSE virtual terminal and the SV virtual terminal of the typical intervals; (4) as the connection relationships between the virtual terminals between interval internal devices with the same voltage stage and the same type are the same, finishing the connection configuration between virtual terminals of other intervals under the same voltage stage by copying the typical intervals. According to the method, the workload and work complexity of the design stage of an intelligent substation can be reduced; the design efficiency and quality of the intelligent substation virtual terminals can be improved.

The invention discloses an enclosure structure with a vibration suppression function and a method for suppressing vibration of the enclosure structure. The outer surface of the enclosure structure isprovided with heat sources. The heat sources are used for heating an airflow boundary layer at the position of the outer surface of the enclosure structure, and through heating, the density of the airflow boundary layer rho can be lowered, the amplitude is reduced, and transverse vibration is suppressed; the airflow boundary layer at the position of the windward surface of the enclosure structureis heated, the airflow boundary layer density is lowered, and equivalently an airflow buffer layer is arranged at the windward surface; and when the windward incoming flow meets the airflow buffer layer, the turbulence can be weakened, the pulsatility is lowered, and the following wind impact on the enclosure structure is reduced, so that the following wind vibration of the enclosure structure canbe suppressed.

The invention discloses an optimization method for virtual circuit design of smart substations. The optimization method comprises the steps of 1) performing virtual terminal standardization design: according to different primary wiring methods and secondary equipment configuration methods in smart substations at different voltage degrees, setting unified and specified relevant virtual terminal standardization design; 2) establishing a smart substation summarization virtual terminal table: combining the virtual terminal tables of various smart substation equipment to form a summarization table and adding interval description attributes; 3) correlating the virtual terminals with identical signal descriptions and interval descriptions and connecting the virtual terminals with consistent signals by using an auxiliary design tool. The optimization method for virtual circuit design of smart substations has the advantages that the virtual circuit design process of the smart substations can be optimized, the workload at a design stage is reduced, and the burdens and the potential hazards caused by substation information digitalization and networking to the current smart substation design work are avoided.

The invention discloses a focal plane array detector and a preparation method thereof. The focal plane array detector comprises an epitaxial layer. The lower surface of the epitaxial layer is providedwith multiple concave first doped regions. The interfaces of the epitaxial layer and the first doped regions are first PN junctions. A pixel element hole is arranged between the adjacent first PN junctions. The lower surface of the epitaxial layer is covered by a first passivation film. The first passivation film arranged on the surface of the first doped regions is provided with first contact holes. The exact middle of the first passivation film arranged on the surface of the pixel element holes is provided with second contact holes. The first contact holes and the second contact holes are filled with first indium bumps and second indium bumps respectively. The first indium bumps and the second indium bumps protrude out of the epitaxial layer. The upper surface of the epitaxial layer isprovided with multiple concave second doped regions. The first doped regions and the second indium bumps are connected in a one-to-one correspondence way. The objective of the invention is to solve the technical problems of crosstalk of the PN junctions of the adjacent pixel elements and small effective utilization area of the pixel elements.

The invention discloses an intelligent patrol system for a communication device. The intelligent patrol system comprises a two-dimension code label and a handheld patrol instrument, wherein patrol system management software is mounted in the handheld patrol instrument, the two-dimension code label is arranged on each communication device, the two-dimension code label comprises two regions, namely a two-dimension code region on the left and an equipment information bar on the right, unchangeable information of the device is complied into two-dimension code information, and the information recorded in the equipment information bar comprises relevant paper data of various electric power telecommunication equipment. According to the intelligent patrol system for the communication device, the two-dimension code label is arranged on the communication device, the two-dimension code label has the two regions for recording changeable information and unchangeable information, wherein the changeable information is formed in a way that relevant paper data of various electric power telecommunication equipment is electronically, visually and intelligently managed, so that relevant personnel can rapidly and accurately take and check information including model, function, operation and the like of needed equipment.

The invention discloses a modified high carbon ferro-chrome slag aggregate for road concrete and a preparation method of the modified high carbon ferro-chrome slag aggregate. The modified high carbon ferro-chrome slag aggregate is characterized by being prepared from a high carbon ferro-chrome alloy slag aggregate and a chemical modifying agent accounting for 2-6 percent of the mass of the high carbon ferro-chrome alloy slag aggregate through mixing, wherein the chemical modifying agent is prepared from 100 parts by mass of polymer diluting solution, 0.5-1.2 parts by mass of organic silicon waterproof defoaming agent, 0.2-0.5 part by mass of polyvinyl alcohol and 2-4 parts by mass of zeolite powder through uniform mixing; the polymer diluting solution is prepared by diluting a polymer emulsion stock solution through adding water; and the polymer emulsion stock solution is any one of a butylbenzene emulsion, a polyacrylate emulsion, a polyethylene-vinyl acetate emulsion and a styrene-acrylic emulsion. By adopting the invention, waste alloy waste is used as a raw material, and thus building materials of carbon chromic slag can be recycled and efficiently utilized, and the defects and the hidden dangers of the carbon chromic slag as the concrete aggregate are solved; and the preparation method is simple and easy to realize and is strong in practicability.

The invention discloses a full-keyboard extended circuit for a mobile phone and a key scanning method of the expanded circuit. 0-group pins of an I / O port of an I / O extended chip are connected with a plurality of keyboard column input lines; 1-group pins of the I / O port are connected with a plurality of keyboard row output lines; and the plurality of keyboard input lines and the plurality of keyboard output lines form a keyboard matrix. When keys are determined to be pressed, the rows to be scanned are configured to be output I / O ports, and the rest rows are set to be input I / O ports, wherein when the I / O port is set to be the input port, the I / O port is in a high-resistance state and two internal MOS (metal oxide semiconductor) transistors are closed. After the scanning completes, the rows configured to be the output I / O ports are re-set to the input port immediately. When two or more keys on the same column but different rows are pressed, the key rows under scanning are the output port, and the reset rows are input ports and in the high-resistance state, so as to prevent the occurrence of electric leakage and obviate hidden dangers.

The invention provides a wireless communication controlling device and method of an intelligent gas meter. The wireless communication controlling device of the intelligent gas meter is mounted on the gas meter; a gas valve, and a valve motor which controls the gas valve are arranged in the gas meter; a control circuit of the valve motor is arranged in an intelligent circuit. The wireless communication controlling device of the intelligent gas meter is characterized in that a Zigbee wireless communication integrated circuit which is equipped with a microprocessor is arranged; a display, an operation button and a sensing window of a gas sensor are all connected with the Zigbee wireless communication integrated circuit and are connected with the intelligent circuit of the intelligent gas meter through a DCPL-Bus or M-Bus interface; the wireless communication controlling device of the intelligent gas meter is connected with a computer of a gas management center through a Zigbee / RF network bridge to form a networking structure system. With the adoption of the device and method, the problem that gas pressure always exists in the gas pipeline and easily causes the potential risk of gas leakage can be solved.

The invention discloses a streamline body and equipment for restraining vibration of an enclosure structure and a tower barrel hoisting method. The streamline body surrounds the enclosure structure and is provided with a streamline-shaped front edge. The front edge can face towards an upwind direction incoming flow, so that the upwind direction incoming flow forms a positive attack angle and / or anegative attack angle. According to the scheme, the streamline body surrounds the enclosure structure, when the upwind direction incoming flow flows around the enclosure structure to make contact withthe streamline body, the aerodynamic shape is changed, the aerodynamic coefficient C is decreased, and vibration is reduced; and the air flow direction and the path are changed, correlation of an upwind direction air flow around the streamline body is damaged, the consistency of the vortex shedding frequency of the streamline body and air flows in other positions is disrupted, thus the combined action of the streamline body and the air flows is weakened, vortex-induced vibration response during around-flow body shedding of the outer surface boundary layer of the enclosure structure is reducedor prevented, and namely, vortex-induced vibration of the enclosure structure is prevented.

The invention relates to a high thermal conductivity graphite material, and a preparation method and application thereof. The high thermal conductivity graphite material uses graphite tailing and ceramic components generated in the machining processes of mesocarbon microbeads and lithium ion battery anode material as the main raw materials; and the raw materials are subjected to cold compression molding and graphitization to obtain the high thermal conductivity graphite material. The graphite material provided by the invention has excellent performance, is particularly suitable as a radiating fin base material for civil high-end electronic devices, LED chip materials and heat exchangers for industrial devices. In addition, the process provided by the invention is simple and has short material preparation period, and the size of the prepared material can be enlarged; therefore, the method is easy for mass production, and greatly reduces the cost of production materials. The method also solves the problems and hidden dangers of stacking landfill and environmental pollution caused by graphite tailing, realizes the comprehensive utilization of waste resources, and decreases the comprehensive cost for the manufacturers of composite cathode material of lithium ion battery by more than 10%.

The invention provides a landslide early warning system and a landslide early warning method. The system comprises an unmanned aerial vehicle and a landslide early warning platform mounted on the unmanned aerial vehicle, wherein the landslide early warning platform comprises an embedded processing device, and an aerial photograph device, a GPS positioning device, a power supply and a time shiftingelectrical method detection system all connected with the embedded processing device; the aerial photograph device is used for performing photographing and video recording for a working area, and obtaining pictures and videos of the working area; the time shifting electrical method detection system is used for arranging two electrical detection sensors at set detection points through the unmannedaerial vehicle according to working area GPS coordinates set by a ground station, and performing landslide risk result analysis according to the pictures, the video and the specific resistance of theworking area. In the method provided by the invention, the time shifting electrical method detection system is arranged through the unmanned aerial vehicle, thus, areas where the sensors are usuallydifficult to allocate manually, such as remote or areas or high mountains and abrupt slopes, can be covered, moreover, the advantages of the method above also can be merged in combination with a technology of image recognition, and early warning work efficiency can be improved.

The invention discloses a windproof and antiskid structure of a 500KV power transmission line high-altitude line patrol robot. The windproof and antiskid structure comprises a moment balance assemblyfixed to the inner side of a housing assembly, a windproof assembly arranged on the outer side of the housing assembly, and an anti-skid assembly arranged on a walking device. The windproof assembly comprises a wind shield and a windproof cover. The middle of the windproof cover is a regular curved surface body which has a hyperbolic curve cross section and has two large ends and a concave middle,and the two sides of the windproof cover are spherical bodies and are smoothly connected with the middle. The moment balance assembly is arranged on the wind shield and comprises a balance fulcrum and a balance rod. According to the invention, the high-altitude line patrol robot can be protected from wind and rain and prevented from being exposed to sunlight and affected by environment sundries during line patrol, a movable assembly and a sensor for detection can be protected, all-weather stable and reliable work can also be achieved in a severe environment where a power transmission line isextremely prone to damage due to fierce wind and freezing, and merits are established for discovering, positioning and solving faults, defects and hidden dangers of the power transmission line in time.

The invention especially relates to an earthworm amino acid stable organic-inorganic soil conditioner and a processing technology thereof, belonging to the field of soil conditioners. The soil conditioner comprises an earthworm amino acid solution, urea, earthworm cast, humic acid, fly ash and a long-acting agent. The composition of the above-mentioned components by mass is that 20 to 50 parts of the earthworm amino acid solution containing 90% of water, 15 to 50 parts of urea containing 46.3% of nitrogen and 1% of water, 10 to 36 parts of earthworm cast containing 1% of nitrogen, 25% of water and 42% of organic matters, 5 to 25 parts of humic acid containing 80% of organic matters and 20% of water, 1 to 35 parts of fly ash containing 8% of organic matters and 8% of water and 0.5 to 13 parts of the long-acting agent containing 40.4% of a digestion inhibitor and 16.28% of a urease inhibitor. The urease inhibition rate and digestion inhibition rate of the soil conditioner provided by the invention exceed requirements prescribed in international stability standard HG / T4135-2010; and the soil conditioner has increased nitrogen content, good stability effect and a high utilization rate, is rich in calcium, magnesium, silicon and 18 amino acids favorable for crop growth, and provides effective guarantee for high and stable yield of crops.

The invention discloses an information processing method and device and electronic equipment. The information processing method comprises the following steps that: according to an identification code, obtaining user information; carrying out replacement processing on parts of contents in at least parts of information in the user information; and displaying the user information subjected to the replacement processing. Parts of contents of parts of information of the user information are subjected to the replacement processing and displayed to solve the problem that an existing user information processing method causes hidden dangers for the security of the user information.

The invention discloses a vehicle braking processing method, device and circuit. The vehicle braking processing method comprises the steps of determining an actual braking level applied to a target vehicle, wherein the braking level is braking degree of braking applied to the vehicle; by using a comparator arranged on the target vehicle, comparing the actual braking level with a preset braking level corresponding to the target vehicle and stored in the comparator; and determining whether braking processing is performed on the target vehicle or not according to a comparing result. Through the adoption of the vehicle braking processing method, device and circuit, a problem that risks and hidden dangers are caused in the vehicle running process because whether a braking electromagnetic valveof the vehicle normally applies emergency braking or not cannot be known in a related technology is solved.

The invention provides a safety monitoring system for a sewage manhole cover. The system comprises a server, a gateway and a sewage manhole cover safety monitoring subsystem. The gateway comprises a central processing unit, a LoRa communication module, a power module and a network module. The sewage manhole cover safety monitoring subsystem comprises a control module, a power supply module, a LoRamodule, a GPS positioning module disposed on the sewage manhole cover, a water level monitoring module disposed on the sewage manhole, an inclination angle monitoring module disposed on the sewage manhole cover, and a power detection module. The sewage manhole cover safety monitoring subsystem communicates with the gateway through the LoRa module, and the gateway communicates with the server through the network module. By adopting the technical scheme of the invention, the system achieves the real-time monitoring and active early warning of a sewage manhole cover. Compared with a conventionalmanual detection mode, the system achieves the effect of preventing the accident in advance, and the system has a wide coverage area, is flexible in installation, is economical and reliable, is easyto maintain, and is low in cost.

The invention provides a damper and a load-bearing envelop enclosure with the same. The damper includes a shell forming an accommodating cavity and a vibration energy dissipating unit located in the shell, wherein the accommodating cavity includes a liquid storing cavity located on the lower portion and a mass body motion cavity located on the upper portion; the vibration energy dissipating unit includes damping fluid accommodated in the liquid storing cavity and a plurality of mass bodies located in the mass body motion cavity, and the mass bodies float on the liquid surface of the damping fluid; and a plurality of tooth-shaped bulges are formed on the outer surface of the mass bodies for breaking waves which are formed in the damping fluid due to vibration to be dispersed in different directions. According to the damper, the vibration of the load-bearing envelop enclosure can be effectively suppressed.

The invention relates to the technical field of drying and refrigerating, and discloses an energy-saving drying and refrigerating system. The energy-saving drying and refrigerating system comprises amaterial lifting and transporting system, a solar drying system and a heat pump waste heat enthalpy-increasing refrigerating system, wherein the solar drying system comprises a solar greenhouse as a material drying energy source, as well as a solar heat collector, a material conveyor, an equalizing fan, a dehumidifying fan, a sterilizer and the like; and the heat pump waste heat enthalpy-increasing refrigerating system is used for recovering the heat of dehumidification gas and the evaporation heat of a cold storage for preheating dry gas, and comprises a dehumidification device and a dehumidification evaporator for cooling and dehumidifying the dehumidification gas, a compressor for boosting and heating heat pump working medium steam, a condenser for exchanging heat between a heat pump working medium and the dry gas, and a cold storage evaporator for evaporating and absorbing heat from the cold storage. The energy-saving drying and refrigerating system provided by the invention can realize efficient drying and refrigeration as well as lower the cost. By means of the solar energy and the heat pump waste heat enthalpy-increasing refrigerating system, the energy utilization rate is increased, and the energy consumption is lowered.

The invention relates to a stone color spot removing method and a stone color spot removing agent. The method comprises the steps of mixing and stirring a liquid oxidizing agent and a powdery carrieron a stone color spot removing site to obtain a paste material, or mixing the solid oxidizing agent, the powdery carrier and water at the stone color spot removing site to obtain a paste material, ormixing and stirring the color spot removing agent composed of the solid oxidizing agent and the powdery carrier with the water at the stone color spot removing site to obtain a paste material; and then applying the paste material to stone color spots. The defects that in an existing stone cleaning technology, a stone color spot removing method has a long cleaning process time, a short action timeof a cleaning agent, an unstable cleaning effect and a complex process, and the agent has deflagration hidden danger, chemical burn and inconvenient transportation and storage and the like are overcome.

The invention provides a voltage converter impact testing device for an active electronic voltage transformer and a corresponding impact testing method, aiming at solving the problem that when a current intelligent transformer station makes a type test for an active electronic voltage transformer and a voltage converter used by the active electronic voltage transformer, the utilized method is a slowly boosting testing method, thus bringing a great hidden trouble for power production. The voltage converter impact testing device includes a test transformer which provides the voltage required by the test, a branch circuit, voltage waveform collectors, and an oscilloscope, wherein the branch circuit is connected with the test transformer in series, and a breaker is arranged on the connection loop; an input end of a voltage converter is connected with one voltage divider of the branch circuit in parallel; the voltage waveform collectors are connected with an output end of the voltage converter; and the oscilloscope is connected with the voltage waveform collectors. The voltage converter impact testing device for an active electronic voltage transformer completely simulates the practical impact process before and after opening and closing of the breaker, and can practically verify whether the voltage converter has the capability of accurate outputting in the impact state, and solves the hidden trouble which may occur during the power production process.

The invention relates to a cultivation medium, particularly to a culture medium for rapidly cultivating temporary planting seedlings of bananas, and belongs to the technical field of temporary planting. The cultivation medium mainly comprises a Pleurotus eryngii fermentation material, latosol and river sand, wherein a volume ratio of the Pleurotus eryngii fermentation material, the latosol and the river sand is (6-10):(0.5-2):1. The Pleurotus eryngii fermentation material is obtained by processing Pleurotus eryngii wastes with a method comprising the following steps: taking the Pleurotus eryngii wastes out of Pleurotus eryngii cultivation bags; crushing into particles with a particle size of 0.12-0.30 cm; adding water for moisturizing; placing into a fermentation tank; adding active bacteria for fermentation; drying in the sun until the water content is 15-20% after completing fermentation; and finally, crushing into the particles with the particle size of 0.24-0.42 cm, namely, the Pleurotus eryngii fermentation material. The cultivation medium provided by the invention makes full use of the Pleurotus eryngii wastes to solve hidden dangers of processing the Pleurotus eryngii wastes and cultivate the temporary planting seedlings of banana, thereby achieving a purpose of turning wastes into treasures.

The invention relates to a concrete and metal structure combined type foundation pit supporting system. The concrete and metal structure combined type foundation pit supporting system comprises a concrete beam, a truss supporting system and a combined beam string structure system; the concrete beam is arranged on the foundation pit inner wall; an end part pull rod of a beam string structure is pre-embedded into the concrete beam and is integrally and fixedly connected with the concrete beam; a web rod of the beam string structure acts on the concrete beam; and the truss supporting system actson the concrete beam. According to the concrete and metal structure combined type foundation pit supporting system, steel enclosing purlins in an existing system are canceled, a novel steel concrete combined type beam string structure system is formed through the direct combination of a steel pull rod and the concrete beam, the construction is convenient, and force is clear; concrete can be pouredintegrally, segmented splicing is not required, so that the problems that connection force transferring of a steel enclosing purlin system and a concrete crown beam or waist beam is not clear and thereliability is poor are solved, and potential safety hazards are removed; and due to the fact that the steel enclosing purlins are not arranged, the truss supporting system and the combined beam string structure system reach the effect of construction separation, and the construction convenience and flexibility are increased.

The invention relates to a method for measuring the distance of an obstacle under an overhead transmission line based on an unmanned aerial vehicle. The method is characterized by after a range finder is carried on the unmanned aerial vehicle, enabling the unmanned aerial vehicle to keep flying at a fixed speed and at a fixed distance with a conductor of the overhead transmission line; measuring the distance and an included angle of the obstacle under the overhead transmission line through the range finder; calculating the shortest distance between the obstacle under the overhead transmission line and the conductor through the distance measurement coordinate model of the obstacle under the unmanned aerial vehicle overhead transmission line; and comparing the shortest distance between the obstacle under the overhead transmission line and the conductor with the safety distance of the voltage level of the power transmission line to obtain a tree obstacle hidden danger detection result. The method solves the problem of hidden danger of obstacles under the power transmission line, provides more efficient, more comprehensive, more convenient, more accurate and more intelligent hidden danger analysis technical support for the operation and maintenance units, has the advantages of improving the line inspection efficiency of power grid enterprises, reducing the probability of power grid accidents, reducing line fault power failure loss and improving the power supply safety and reliability of the power grid, and meanwhile, the method has the important significance in reducing the operation risk of personnel and guaranteeing the operation safety.

The invention belongs to the technical field of road traffic smart checkpoints, and in particular relates to an anti-glare device for a smart checkpoint, including a backlight detection module, a vehicle distance detection module, an automatic dimming and supplementary light module, a control module, a camera module, a trigger module and a power supply module; The module includes an imaging unit, in which the license plate algorithm software is embedded; the backlight detection module, the vehicle distance detection module, and the trigger module collect corresponding information and output it to the control module, and the control module controls the start and stop of the vehicle distance detection module according to the received information. The brightness of the light-emitting unit of the electric light source and the exposure amount of the imaging unit in the dimming supplementary light module also disclose a control method of the device. Through the collection and processing of specified information, the phenomenon of backlight and glare is effectively eliminated, and the whole process is automatically processed, which is convenient, fast and accurate, and effectively solves the problems and hidden dangers caused by backlight and glare.

The invention relates to a steel production equipment hidden danger level automatic identification alarm system, and belongs to the technical field of steel production risk assessment and early warning. The system comprises a steel safety production control module, a shooting guidance module, an edge calculation module, an image structured data conversion module, an equipment hidden danger level data model base module, an equipment health data model base module, a far-end server and other structures. According to the invention, the shooting guide module is controlled to shoot the pictures of the designated position and angle of the inspection equipment; and the image structured data conversion module, the equipment hidden danger level data model library module and the equipment health datamodel library module are controlled to perform corresponding calculation through the edge calculation module, the hidden danger level and the health index level of the inspection equipment are automatically identified, and an alarm is given according to conditions. The reliability and safety of operation, maintenance and inspection of the steel production equipment are improved, economy, perspectiveness and safety of planned inspection and maintenance of the steel production equipment are improved, and the method is easy to apply and popularize.

The invention discloses a rapid manhole cover repairing method which comprises the following steps: pre-casting and manufacturing a prefabricated well shaft; performing annular cutting on concrete at the upper part of the inner wall of a well to be repaired by using cutting equipment; putting the prefabricated well shaft into the well and placing on a cut horizontal cross section, screwing an adjusting bolt into a grouting through hole of an embedding screw nut, and enabling the bolt to jack the horizontal cross section; injecting rapidly cured slurry into the rest of the grouting through hole, after the rapidly cured slurry is cured, taking out the bolt, and placing the manhole cover back to the well shaft, thereby completing maintenance of the well. As the prefabricated well shaft with the grouting through hole is cast and manufactured in advance, after the upper part of the well is cut off, the well can be rapidly replaced and mounted, and in addition the prefabricated well shaft can be completely cured and dried, and is high in stability; moreover, the grouting through hole in the prefabricated well shaft, and the prefabricated well shaft can be allowed to have certain errors with a cut part, so that the cost and the cutting precision of the prefabricated well shaft can be reduced, and the errors can be adjusted through the bolt inside the grouting through hole.

The invention discloses a winding technology of a transformer and the transformer manufactured with the winding technology, and relates to the technical field of transformers. The winding technology of the transformer includes the steps that stranded parts of stranded wires are wrapped with first insulation tape; the stranded wires penetrate through the inner side of a wire feeding groove from the outer side of the wire feeding groove; the stranded wires are pressed on the inner side of the side wall of a rubber core; the stranded wires located on the inner side of the wire feeding groove are fixed on the rubber core through second insulation tape. The hidden danger problem of incompact parts of the stranded wires and the hidden danger problem of inter-turn short circuits are solved, the previous problem that as the tape is not fixed and also moves when a winding machine rotates, winding wires are broken is solved, the reliability of the transformer is improved, and the service life of the transformer is prolonged; meanwhile, the manufacturing efficiency of the transformer is higher, and the reject ratio is lower.

The invention provides a system for eliminating POP noise produced by shutting down audio system, including a power supply module, a physical switch, an enable control bit power supply, an analog-to-digital / digital-to-analog converter, an operational amplification unit, a microcontroller, and a mute unit, wherein the physical switch is respectively connected with the power supply module, the enable control bit power supply and the microcontroller; at the same time, the power supply module, the enable control bit power supply, the analog-to-digital / digital-to-analog converter and the microcontroller are connected in sequence; the operation amplification unit is connected with the analog-to-digital / digital-to-analog converter, and further connected with the mute unit; and the microcontrolleris also connected to the mute unit. The invention uses the microcontroller to detect the state of the switch of the audio power supply module. When the power switch state is off, the microcontrollercontrols the mute unit to be mute, and then turns off the power, thereby solving the hidden danger and harm caused by the POP noise.

The invention relates to the technical field of LED equipment and discloses an LED ceiling lamp with an air purification function. The LED ceiling lamp with the air purification function comprises a purification tank, a mounting base is fixedly connected to the lower surface of the purification tank, an LED lamp tube is fixedly installed on the lower surface of the mounting base, an input pipe isarranged on the front side of the purification tank, a filtering valve is fixedly connected to the back side of the input pipe, and the back side of the top of the filtering valve is fixedly connectedwith the front side of the purification tank. According to the LED ceiling lamp with the air purification function, a guide tank and an air pump are arranged, the air pump drives air to enter the guide tank, the retention time of the air in the guide tank is prolonged because the guide tank is in a zigzag mode, the filtering effect is improved, the purity degree of the air is ensured after the air passes through three filtering layers in sequence, the purpose that air is purified step by step by passing through the multiple filtering layers is achieved, the problem that air cannot be purifieddue to structure limitations and consequently potential safety hazards are easily caused to personal health in the prior art is solved, and therefore the probability of occurrence of respiratory diseases is decreased.