31results about How to "Reduce the chance of spreading" patented technology

The invention relates to a fire detection, prevention and control system of an electronic control cabinet. The fire detection, prevention and control system comprises a data acquisition device, a fire extinguishing device and a main control device which are arranged in an electronic control cabinet body, wherein the data acquisition device is used for acquiring detection data of each detection node in the electronic control cabinet in real time, and transmitting the detection data to the main control device; the fire extinguishing device is used for accepting a control signal sent by the main control device, and carrying out fire control and processing on an area with a fire early warning; a fire extinguishing control module is used for sending a control signal to the fire extinguishing device according to the instruction of a CPU (central processing unit) core module. The invention further discloses a control method based on the system. The control method comprises the following steps: transmitting the CO and smoke concentration acquired in real time to the CPU core module; processing by a pre-detection data filter model to obtain a characteristic extraction value; if fire early warning standards are met, sending an early warning or starting the fire extinguishing device. The fire detection, prevention and control system and the control method disclosed by the invention are capable of performing real-time detection on a small space such as the electronic control cabinet, eliminating fire in the bud, and reducing the false alarm rate of fire early warning.

The invention relates to a squatting pan with excrement residue sensing cleaning apparatus. The squatting pan comprises a squatting pan body, a water supply pipe connected with an annular flushing cavity of the squatting pan, a water route electromagnetic valve, an approaching-type infrared sensor and a control circuit, and is characterized by being additionally provided with an odor pumping mechanism and an intelligent flushing control mechanism; the odor pumping mechanism comprises a draught pipe, a fan, an air route electromagnetic valve and a control circuit, and the intelligent flushing control mechanism comprises an excrement residue sensor installed in the squatting pan, a turbidity detector installed on a water return elbow water sealing layer on the lower end of a draining openingof the squatting pan and a control circuit connected with the approaching-type infrared sensor, the water route electromagnetic valve, the excrement residue sensor and the turbidity detector. The squatting pan has the beneficial effects that a majority (more than 80 percent) of odor can be pumped from a toilet groove, and the probability of the continuous odor release of the excrement residues inthe toilet can be reduced. The water consumption of the squatting pan is reduced.

The invention provides a heat treatment method for improving the mechanical property of austenitic heat-resistance steel. According to the heat treatment method, the technological step is simple and effective, operation is easy, cost is low, the microstructure of the austenitic heat-resistance steel can be improved, and the mechanical property of austenitic heat-resistance steel is improved. The heat treatment method comprises the following steps that (1) raw materials are prepared according to the alloy component and the burned value and smelted and poured into alloy ingots under the vacuum environment; (2) the alloy ingots are sequentially subjected to homogenization and heat deforming treatment; (3) alloys after heating deforming are subjected to solid solution heat treatment at the temperature of 1200-1260 DEG C for 25-45 min, and then water cooling is conducted till the temperature reaches the indoor temperature; and (4) intermediate temperate short-term aging treatment is conducted, specifically, the alloys after solid solution heat treatment are heated till the temperature is 750-800 DEG C, heat preservation is conducted for 30-60 min, air cooling is conducted till the temperature reaches the indoor temperature, the austenitic heat-resistance steel is obtained, nano-scale Z phases are obtained in crystals, and M23C6 phases are obtained in crystal boundaries.

The invention relates to a formula of a silicon solar battery front silver paste with a wide high-temperature sintering window and a preparation method for the front silver paste. The invention is mainly characterized in that: an inorganic mixed additive which is obtained by pre-treatment is added into a silver paste, so the high-temperature sintering window of the paste is remarkably widened, and the process performance of the front silver paste is greatly improved. The inorganic mixed additive consists of a glass material with specific softening points, nano silica of a specific size, and superfine bismuth trioxide (Bi2O3). When a battery piece is quickly sintered by using a tunnel furnace and subjected to heat treatment, the inorganic mixed additive can well corrode a silicon nitride anti-reflection film on the front of a battery, and good ohmic contact can be well formed between silver and silicon, so that compared with the temperature of the high-temperature sintering window of the conventional paste, the temperature of the high-temperature sintering window of the front silver paste can reach 80 DEG C and can rise by 20 to 40 DEG C. The preparation method for the front silver paste comprises the processes of preparation and pre-treatment of the inorganic mixed additive, preparation of the silver paste and processing of the paste.

The invention belongs to the field of crystalline silicon solar cells, and relates to a heterojunction solar cell and a preparation method thereof. The method mainly solves the technical problems that in the prior art, due to the fact that the thermal stability of a P-type doping layer of a heterojunction solar cell is poor, B atoms are likely to diffuse and enter an amorphous silicon intrinsic layer and the optical forbidden band width of the P-type doping layer formed through doping of pure diborane gas is low, the defect state density of boron-doped amorphous silicon and the recombination current density of an emitting electrode are increased due to doping of high-concentration diborane gas, and the design of a P-type doping layer is imperfect. The scheme provides the heterojunction solar cell and the preparation method thereof. The method comprises the steps: designing P-type doped layer into a laminated structure which comprises a first P-type doped layer which is in contact with an intrinsic amorphous silicon layer and contains trimethyl boron gas deposition, and at least two layers of overall layered structures with gradually increased boron doping concentration deposited by trimethyl boron and diborane gas. The preparation steps are simple, the cost is low, and the obtained heterojunction solar cell is excellent in performance.

The invention relates to a water cooling type fireproof door. A water cooling pipeline (3) is arranged at a connecting fitting(2) of the fireproof door(1), a water inlet(4) and a water outlet (5) are formed in the water cooling pipeline (3), the water cooling pipeline (3) winds and penetrates through the fireproof door (1), water cooling switches (6) are respectively arranged on both sides of the fireproof door (1), when a fire occurs, the water cooling switches (6) are pressed, and water flows in the water cooling pipeline (3) to cool the fireproof door (1); a temperature measuring device (7) and a remote communication module (8) are arranged, and when a fire occurs, temperature information is sent to a specified remote number; a spraying device (9) is arranged on the fireproof door, and when a fire occurs, the water cooling pipeline can be directly started to lower the temperature of the fireproof door, so as to prevent the fireproof door from being ignited due to too high temperature, and to reduce the probability of fire spread.

The invention provides a PMOS structure and a formation method thereof. The formation method of the PMOS structure includes: a semiconductor substrate is provided, and a grid electrode structure and side walls positioned on sidewalls of two sides of the grid electrode structure are formed on the surface of the semiconductor substrate; the grid electrode structure and the side walls are regarded as masks, and grooves are formed at two sides of the side walls in the semiconductor substrate; germanium silicon seeding layers are formed on the surfaces of the bottom surfaces and side surfaces of the grooves, and the germanium silicon seeding layers are doped with fluorinions; and silicon germanium body layers are formed on the silicon germanium seeding layers, and remaining portions of the grooves are filled with the silicon germanium body layers. The fluorinions and silicon have strong bonding force, the germanium silicon seeding layers are doped with the fluorinions so that the transferred electron effect can be reduced, and the diffusion of P-type ions is prevented; besides, through the doping of the fluorinions, the stability of the device can be improved, and the negative bias temperature instability and the hot carrier injection effect are improved.

The invention discloses a germanium-base substrate surface passivation method, which comprises the following steps of: cleaning a surface of a germanium-base substrate; putting the cleaned germanium-base substrate into a plasma cavity; utilizing reaction gas corresponding to multiply-bound atoms to generate a plasma; carrying out plasma bath processing on the surface of the germanium-base substrate; and applying a guiding electric field in a plasma bath processing process to guide the plasma to drift to the surface of the germanium-base substrate. Due to the processing, covalently joint of activated the multiply-bound atoms and germanium surface atoms is formed, but an interface layer containing germanium compounds is not generated, so that a surface dangling bond is passivated, the probability that the germanium surface atoms are separated from the surface of the germanium-base substrate to be dispersed is reduced, and simultaneously, the phenomenon that the thinning of the EOT is unfavorable as the interface layer is introduced is avoided. In addition, the guiding electric filed is applied, so that the formation of germanium oxides can be effectively suppressed, the passivation efficiency is improved, and the density of interfacial states is reduced.

The embodiment of the invention discloses a memory manufacturing method and a memory. The memory manufacturing method comprises the following steps of forming a passivation layer on a first substratewith a memory unit, wherein a storage unit is located on the first surface of the first substrate, the passivation layer is located on the second surface of the first substrate, and the second surfaceof the first substrate is the surface opposite to the first surface of the first substrate; forming a first barrier layer with a first dangling bond on the second surface of the first substrate and on the passivation layer; performing heat treatment on the passivation layer at a preset temperature, wherein the hydrogen particles in the passivation layer are released to the first barrier layer andare combined with the first dangling bond to form a first covalent bond.

The invention provides an image sensor and a forming method thereof. The image sensor comprises a silicon-on-insulator (SOI) substrate, wherein the SOI substrate comprises a wafer back absorption layer, a bottom layer substrate, a buried oxide layer and a top layer substrate; the buried oxide layer is located at the upper part of the bottom layer substrate; the top layer substrate is located at the upper part of the buried oxide layer and comprises a pixel region and an absorption region; the absorption region is located on the periphery of the pixel region; the pixel region comprises a photoelectric diode PD and a transistor unit; an absorption structure is arranged in the absorption region and comprises polycrystal layers and covering layers; the covering layers ares located on the surfaces of the polycrystal layers; and the absorption layer is in a laminated structure which is formed by alternate arrangement of the polycrystal layers and the covering layers; the covering layers are used for inhibiting recrystallization of the polycrystal layers; and the absorption structure can effectively absorb metal impurities in the top layer substrate, reduces the dark current and improves the image quality.

The invention relates to the technical field of medical protection device, in particular to a negative pressure device for preventing novel coronavirus from splashing, which is characterized in that ashell is a hollow rectangular box without a bottom surface, the rear surface of the shell is used as a tail side surface, and a through hole is formed in the tail side surface to be used as a negative pressure suction connecting hole; one end of the connecting pipe is connected with the negative pressure suction connecting hole, the other end of the connecting pipe is connected with a filter, thefilter is connected with a negative pressure device, and the negative pressure device is connected with a virus-killing device. The beneficial effect of the invention is to transfer the protection object from the operator to the patient, cut off the transmission path by controlling the source of infection, reduce the risk of infection, so as to protect the medical staff. Aerosol formed by splashed secreta and gas with viruses exhaled by a patient are sucked away and inactivated in time, which not only reduces the probability of virus diffusion and infection, but also reduces the fear and physical discomfort of medical staff, so that the accuracy of the operations is improved, and therefore the treatment effect of the patient is improved.

The invention provides a solar cell and a preparation method thereof. The solar cell comprises a semiconductor substrate layer, a first intrinsic semiconductor layer positioned on one side of the semiconductor substrate layer, and a P-type semiconductor layer located on the side, which is back to the semiconductor substrate layer, of the first intrinsic semiconductor layer, wherein the P-type semiconductor layer comprises a first P-type sub-semiconductor film to an Mth P-type sub-semiconductor film which are sequentially stacked in the direction from the semiconductor substrate layer to the first intrinsic semiconductor layer; the concentration of P-type ions in the Mth layer of P-type sub-semiconductor film to the first layer of P-type sub-semiconductor film is gradually reduced in sequence; and M is an integer greater than or equal to 2. The open-circuit voltage and the conversion efficiency of the solar cell are improved.

The invention relates to carbonitriding heat treatment equipment based on computer simulation, and relates to the technical field of carbonitriding equipment, the carbonitriding heat treatment equipment comprises a furnace body for carbonitriding reaction, the furnace body is provided with a detection mechanism, the detection mechanism comprises a guide pipe, a sealing box, a sensor and an exhaust pipe, one end of the guide pipe communicates with the furnace body, and the other end of the guide pipe communicates with the sealing box; one end of the exhaust pipe is communicated with the sealing box, the other end of the exhaust pipe is communicated with the waste gas treatment tank, the sensor is arranged on the inner wall of the sealing box, and a ventilation mechanism is arranged on the sealing box and used for replacing gas in the sealing box with air. The application has the effect of protecting the sensor.

The invention discloses a chemical equipment dustproofing door. The chemical equipment dustproofing door comprises a base frame, an isolation layer, a filter layer, a sliding groove, an air curtain machine, a water storage box, an atomizer, a mist absorber, a movable door, a fixed frame and a movable plate, wherein the base frame is used for fixing the movable door and made of aluminum alloy; thesliding groove is embedded in a protruding block in the middle of the base frame; the movable door is mounted in the sliding groove; the isolation layer is arranged on the right side of the movable door and composed of the air curtain machine and the fixed frame; the fixed frame is mounted on the top of the base frame; the air curtain machine is mounted in the fixed frame; the filter layer is arranged on the left side of the movable door and composed of the atomizer, the mist absorber, the water storage box and the movable plate; the water storage box is mounted at the bottom of the base frame; the atomizer is mounted in the water storage box; the movable plate is arranged on the top of the water storage box; and the mist absorber is matched with the atomizer and arranged in a groove in the top of the base frame. According to the chemical equipment dustproofing door, dust in air is removed and isolated through an inner protection layer and an outer protection layer, the dust in the aircan be reduced to the minimum, and a barrier can be formed between a workshop and an outer passageway.

The invention provides a tobacco planting method combining half-dry land bed seedling and transplanting. The tobacco planting method comprises the two processes of half-dry land bed seedling and warm-hole type transplanting, wherein the half-dry land bed seedling and warm-hole type transplanting comprises the steps of fertilizing, ridging, tobacco-hole excavating, open-water transplanting, drug-spraying around the root of the tobacco, in-time film mulching, trepanning and ventilating, seedling drawing out and small-size ridge plowing and film uncovering and large-size ridge plowing. The tobacco planting method has the advantages that the problem that the tobacco seedling is delicate and not strong during the transplanting process is solved, the survival rate of transplanting is improved, the seedling recovering period is shortened, and the seedling cost is reduced, and a warm small space for the grooving of the tobacco seedling is created, so that the influence of low temperature and drought is avoided; premature and fast-growing of the tobacco seedling are facilitated, early blossoming of the tobacco seedling is prevented, deep cultivating can be realized thoroughly, flourishing root system of a tobacco plant is promoted, the drought-enduring capability of the tobacco plant is strengthened, occurring of viral disease is reduced, labor concentrating problem during the tobacco seedling transplanting period is also relieved, and the transplanting time can be advanced according to the local tobacco production status. The tobacco planting method combining half-dry land bed seedling and transplanting is suitable for the tobacco cultivation such as the flue-cured tobacco, the burley tobacco and the sun-cured tobacco.

The invention discloses a wildlife epidemic disease transmission early warning device based on unmanned aerial vehicle monitoring, and belongs to the technical field of epidemic disease transmission early warning devices.The wildlife epidemic disease transmission early warning device comprises a base, a main machine and an outer frame, the main machine and the outer frame are both fixedly connected to the upper surface of the base, the outer frame is located on the left side of the main machine, and a placing plate is fixedly connected into the outer frame; and a plurality of side plates are fixedly connected to the upper surface and the lower surface of the placing plate, and the interior of the outer frame is divided into a plurality of cavities by the side plates. According to the invention, the storage box is arranged, paper tubes and test paper are arranged in the storage box, when the test paper needs to be used, a handle is screwed to rotate a roller to roll the test paper, the other paper tube can release the test paper, and therefore the unused test paper can be drawn out, and the safety performance is greatly improved; and meanwhile, silica gel gloves are arranged, the silica gel gloves are beneficial for the worker to stretch the hand into the storage box for operation so that the scheme has an epidemic disease detection function, and the early warning performance is improved.

The invention relates to the technical field of wireless charging module production, in particular to wireless charging module dispensing equipment which comprises a workbench, a pre-baking oven, a heat insulation assembly, a dispensing assembly, a fixing assembly, a limiting assembly, a material carrying assembly and a conveying assembly. Material carrying assemblies of different sizes can be made according to the size of an actually produced wireless charging module, the moving positions of the material carrying assemblies are limited through the limiting assembly, the conveying assembly can conveniently drive a material carrying plate to move directionally, the dispensing assembly is detachably arranged through cooperation of the dispensing assembly and the fixing assembly, and the dispensing efficiency is improved. The glue solution can be conveniently added in time after the glue solution is used up; through cooperation of the transmission assembly, the glue dispensing assembly and the heating assembly, glue can be directly pre-baked after glue dispensing of the wireless charging module, the probability that the glue diffuses to the outside of a welding spot is reduced, and therefore the glue dispensing height of the glue at the welding spot is increased, and the protection effect of the glue on the welding spot is improved.

The invention relates to the technical field of uterine manipulators, in particular to a multifunctional uterine manipulator. The multifunctional uterine manipulator is structurally characterized in that a central guide rod is of a hollow core structure, and a perforation preventing device is arranged at the top end of the central guide rod; an anti-falling device is located in a groove formed inthe upper part of the central guide rod, a uterus lifting sleeve comprises a uterus lifting cup and a connecting sleeve, the uterus lifting cup is mounted below the anti-falling device on the centralguide rod through mounting holes, the connecting sleeve is connected onto the central guide rod in a sleeving manner and located below the uterus lifting cup, and a sealing device can fill a gap between the connecting sleeve and the vaginal wall after air inflation; and a holding device is fixed with the lower end of the connecting sleeve, the central guide rod penetrates through the holding device to extend downwards, and a transmission device is arranged on the central guide rod at the extending part. The uterine manipulator has the characteristics of sufficiently exposing parametrium, preventing perforation and vaginal bruises and reducing spreading probability of tumors in the abdominopelvic cavity.

The invention discloses a deodorizing device of a flush toilet. The deodorizing device of the flush toilet is characterized in that a connection step is arranged at a circular water outlet of the flush toilet; a circular elastic connection ring for automatically opening and closing the deodorizing device is detachably connected to the connection step; the lower part of the elastic connection ring is fixedly connected to a flexible bag; the flexible bag is bag-shaped; an upper self-sealed opening is formed at the bottom of the flexible bag; a lower self-sealed opening is formed under the upper self-sealed opening; the upper self-sealed opening is formed by fixedly connecting two opposite and rectangle elastic upper self-sealed sheets to the lower end of the flexible bag; the left ends and the right ends of two upper self-sealed sheets are fixedly connected; the lower self-sealed opening is formed by fixedly connecting two rectangular elastic lower self-sealed sheets under two upper self-sealed sheets; and the left ends and the right ends of two lower self-sealed sheets are fixedly connected. The deodorizing device of the flush toilet disclosed by the invention is simple in structure, convenient to use, long in service life, convenient to replace, good in deodorizing effect, obvious in water saving effect and wide in applicability, so that the deodorizing device of the flush toilet disclosed by the invention is widely applied to the deodorizing devices of all the sewage discharging pipelines, such as floor drains, various basins and basins of washing tables, and especially applied to various toilets.

The invention relates to the technical field of wireless charging module production, in particular to wireless charging module dispensing equipment which comprises a workbench, a pre-baking oven, a heat insulation assembly, a dispensing assembly, a fixing assembly, a limiting assembly, a material carrying assembly and a conveying assembly. Material carrying assemblies of different sizes can be made according to the size of an actually produced wireless charging module, the moving positions of the material carrying assemblies are limited through the limiting assembly, the conveying assembly can conveniently drive a material carrying plate to move directionally, the dispensing assembly is detachably arranged through cooperation of the dispensing assembly and the fixing assembly, and the dispensing efficiency is improved. The glue solution can be conveniently added in time after the glue solution is used up; through cooperation of the transmission assembly, the glue dispensing assembly and the heating assembly, glue can be directly pre-baked after glue dispensing of the wireless charging module, the probability that the glue diffuses to the outside of a welding spot is reduced, and therefore the glue dispensing height of the glue at the welding spot is increased, and the protection effect of the glue on the welding spot is improved.