24results about How to "Improve security features" patented technology

The invention provides a multi-target tracking detection method and system based on cascade matching and trajectory confirmation, and relates to the technical field of digital video monitoring and tracking, and the method comprises the steps: obtaining a personnel construction video, and decomposing a video frame into a plurality of images; identifying a target in the current frame of image based on an improved YOLOv5 network, obtaining a target detection frame, and obtaining a prediction trajectory frame of the current frame through a Kalman filtering algorithm based on the trajectory frame of the previous frame; performing multi-target tracking on the target detection frame and the prediction trajectory frame of the current frame by using a DeepSort algorithm, respectively obtaining motion features and appearance features of the target detection frame and the prediction trajectory frame, performing cascade matching on the motion features and the appearance features of the target detection frame and the prediction trajectory frame by using a Hungary algorithm, and performing matching optimization by using an IOU matching algorithm; and carrying out fusion updating on the successfully matched target detection frame and prediction trajectory frame by using a Kalman filtering algorithm, and replacing the original prediction trajectory frame to obtain a tracking result.

The invention belongs to the technical field of three-dimensional ceramic network reinforced composite phase-change materials, and particularly relates to a high-thermal-conductivity and insulating three-dimensional ceramic network reinforced composite phase-change material and a preparation method thereof.The high-thermal-conductivity and insulating three-dimensional ceramic network reinforced composite phase-change material comprises an organic solid-liquid phase-change material serving as a working component, an inorganic solid-liquid phase-change material serving as a working component and an inorganic solid-liquid phase-change material serving as a working component, the polyhydric alcohols are selected from paraffin, polyethylene glycol, stearic acid and polyhydric alcohols; an encapsulating component: a steady-state polymer material selected from epoxy resin and polyurethane; the reinforcing filler is a high-thermal-conductivity insulating inorganic filler and is selected from boron nitride, aluminum oxide and silicon nitride.The preparation method has the advantages that compared with a traditional porous ceramic preparation process, controllable preparation of the high-thermal-conductivity insulating porous ceramic with a complex structure is achieved by adopting a 3D printing technology, and designability and repeatability of the structure of the high-thermal-conductivity insulating porous ceramic can be achieved easily.

The utility model relates to the technical field of building mechanical and electrical installation, and discloses a plane tooth structure assembly type support hanger which comprises a cross beam, a vertical beam and a damping piece, the cross beam and the vertical beam are both of a C-shaped semi-closed structure, planes are arranged on the two sides of the opening end of the cross beam and the two sides of the opening end of the vertical beam, and tooth plates are fixedly installed on the two sides of the planes of the cross beam and the two sides of the planes of the vertical beam. The top of the cross beam is movably connected with a transverse plate, the side face of the vertical beam is movably connected with a vertical plate, the vertical plate and the transverse plate are perpendicular to each other and fixedly connected, the surfaces of the vertical plate and the transverse plate are each provided with two supporting assemblies, the same sides of the vertical plate and the transverse plate are each fixedly provided with a side plate, and a connecting plate is fixedly installed between the two side plates. And clamping assemblies are installed on the outer surfaces of the two side plates correspondingly, circular grooves are formed in the outer surfaces of the transverse plate and the vertical plate correspondingly, and the beneficial effects are that the risk of overall installation is reduced, and the safety function is increased.

The invention discloses a composite pole piece and a preparation method and application thereof.The composite pole piece comprises a current collector, a first material layer and a second material layer, the first material layer is arranged on at least part of the surface of the current collector and comprises an active material and a pore-forming agent, and the pore-forming agent is arranged on the first material layer; the active material comprises a positive active material or a negative active material; the second material layer is arranged on at least part of the surface of the first material layer, and the second material layer comprises ceramic; a plurality of pores formed by thermal decomposition of at least part of the pore-forming agent are formed in the interiors and the surfaces of the second material layer and the first material layer. According to the composite pole piece, the first material layer containing the pore-forming agent and the active substance and the second material layer containing the ceramic with the safety function are sequentially arranged on the surface of the current collector, and the first material layer and the second material layer both contain the multiple pores, so that the safety function and the wettability of the pole piece can be improved.

The present invention relates to a continuous synthesis system and method of halogenated benzoic acid compounds, and belongs to the technical field of organic synthesis. The continuous synthesis system is a microreactor synthesis system, which mainly includes a metering pump, a T-type micromixer, a magnetically driven active micromixer, a temperature control device, a magnetically driven oscillating microreactor, a nitrogen back pressure tank and a pipeline; it can not only significantly reduce the process safety risk, greatly improve the reaction process efficiency, but also has simple process operation, stable and reliable, and is easy to realize the industrial production of halogenated benzoic acid compounds. The method is based on continuous flow technology, uses performic acid as an oxidizing agent, and directly oxidizes and prepares benzoic acid compounds in a microreactor synthesis system, which can achieve efficient and safe production.

The invention discloses a communication management machine. The communication management machine comprises a data acquisition module, a memory database, a data forwarding module and a data encryption / decryption module, the data acquisition module is used for acquiring data of field power equipment, performing data analysis according to corresponding forwarding requirements and then storing the data into the memory database in real time; the data forwarding module is used for forwarding the data in the memory database according to a corresponding forwarding protocol; the data encryption / decryption module is used for encrypting / decrypting exchange data between the data forwarding module and the outside; the communication management machine further comprises an edge calculation module which is used for carrying out statistical analysis on the data in the memory database. Compared with the prior art, the edge calculation module is arranged to perform statistical analysis on the local data collected by the communication management machine, and localization processing of functions such as energy consumption statistics, equipment life prediction and fault recording file processing can be realized, so that the burden of a system platform is effectively reduced.

This invention belongs to the field of biomedical technology, specifically relating to triptolide liposomes (TP-lipo), their combined use, and their application in the prevention and treatment of tumors. To enhance the efficacy of triptolide in the treatment and prevention of tumors such as pancreatic cancer, cervical cancer, ovarian cancer, and colorectal cancer, and to improve its bioavailability and clinical application while reducing toxicity, this invention uses HSPC, DOPS, and cholesterol as liposome components to encapsulate triptolide monomers, thus preparing TP-lipo. Experiments have shown that TP-lipo exhibits anti-tumor activity: it directly kills tumor cells and reverses the immunosuppressive microenvironment, making it a potential drug for tumor treatment. TP-lipo, when used in combination with PD-1 antibodies, or in combination with radiotherapy, chemotherapy, or surgery, demonstrates a potent and synergistic anti-tumor effect with low toxicity. Therefore, the TP-lipo of this invention provides more clinical strategies for tumor treatment.

The invention belongs to the technical field of aqueous batteries, and discloses a preparation method of an ant nest-shaped carbon material and a zinc-iodine soft package battery. The preparation method comprises the following steps: (1) preparing a ZIF-8 material from zinc nitrate hexahydrate and 2-methylimidazole; (2) calcining the material prepared in the step (1) to obtain an ant nest-shaped carbon material; the zinc-iodine soft package battery comprises a zinc foil negative electrode, an ant nest-shaped carbon material positive electrode, a glass fiber diaphragm and an electrolyte, the obtained ant nest-shaped carbon material has a high specific surface area and a rich pore structure, can effectively bear and limit an iodine active substance, and improves the effective utilization rate of an iodine simple substance; the dissolution and diffusion of intermediate product polyiodide ions can be limited, and the shuttle effect is inhibited; the price is low, the preparation method is simple and convenient, and the repeatability is high; and the aqueous electrolyte and the graphite paper current collector are adopted, so that dangerous conditions such as combustion or explosion and the like are not easy to occur. And meanwhile, the application of the graphite paper current collector shows the trend of increasing the energy density.

The utility model discloses a kind of ceramic suction disc fine grinding mechanism, belong to ceramic suction disc processing field.A kind of ceramic suction disc fine grinding mechanism, including frame, the upper surface of frame is centrally provided with polishing table, and polishing table both ends are symmetrically provided with conveyer belt, the upper surface of frame and located the both sides of conveyer belt are equipped with truss, slidingly connected with connecting piece between truss, the perpendicular intersection of the median line of polishing table and the sliding path of connecting piece, polishing head and second cylinder are installed on connecting piece, and the end of second cylinder is connected with suction disc;The utility model can flexibly control polishing head position by the connecting piece slidingly connected between truss, the perpendicular intersection of the median line of polishing table and the sliding path of connecting piece, can accurately polish ceramic suction disc on polishing table in all directions, dust pan is set on frame, effectively collect the dust generated by polishing, keep working environment clean, conducive to long-term stable operation of equipment and operator health.

The invention provides bacillus subtilis BS-21001 and application thereof, belongs to the technical field of biological prevention and treatment, and can solve the technical problems that a traditional riemerella anatipestifer disease treatment method is not ideal in immune effect and drug residues exist. The bacillus subtilis BS-21001 is named as bacillus subtilis in taxonomy, the preservation number of the bacillus subtilis BS-21001 is CGMCC (China General Microbiological Culture Collection Center) No.26444, and the bacillus subtilis BS-21001 is preserved in the China General Microbiological Culture Collection Center on March 23, 2023. The fermentation supernatant of the bacillus subtilis BS-21001 can be used as a single active component or compounded with other active components to prepare a microecological preparation, and the microecological preparation can effectively inhibit riemerella anatipestifer in duck bodies and in a breeding environment and has no chemical pollution to the environment.

The invention provides an electrolyte, a secondary battery and a device. The electrolyte comprises a lithium salt, a non-aqueous solvent, a first additive as shown in a formula 1, a second additive as shown in a formula 2 and a third additive as shown in a formula 3, therefore, the electrolyte disclosed by the invention can be used for solving the problems that the performance of the secondary battery is degraded and fire and explosion are easy to occur due to overcharge in the prior art. Besides, on the basis of ensuring the cycle performance of the secondary battery, the overcharge performance can be effectively improved, and the impedance growth rate can be effectively reduced, so that the secondary battery has excellent comprehensive performance.

This disclosure discloses an aqueous high-voltage electrolyte and its preparation method, as well as a supercapacitor, belonging to the field of supercapacitor technology. The preparation method of the aqueous high-voltage electrolyte includes: adding an electrolyte salt to deionized water and stirring until the electrolyte salt is completely dissolved to obtain a mixed solution; adding a high-voltage additive and a hydrogen-eliminating additive to the mixed solution, and stirring to obtain the aqueous high-voltage electrolyte. This disclosure utilizes the synergistic effect of two additives, which preferentially adsorb at the electrode / electrolyte interface. By adjusting the interfacial double-layer structure, disrupting the hydrogen bond network of water molecules, or forming a protective layer, these additives effectively increase the water decomposition overpotential, thereby achieving a stable widening of the operating voltage window without significantly altering the basic composition and physicochemical properties of the electrolyte.

The invention belongs to the technical field of lithium metal battery safety, and relates to a preparation method of a lithium metal battery based on a flame-retardant local high-concentration polymer electrolyte. The preparation method comprises the following steps: preparing an intrinsic flame-retardant high-molecular polymer into spinning solutions with different concentrations, and preparing an intrinsic flame-retardant nanofiber membrane through an electrostatic spinning technology; the preparation method comprises the following steps: preparing an ether or ester electrolyte, adding a diluent, a catalyst and a cross-linking agent into the ether or ester electrolyte in proportion to prepare a pre-polymerized solution, finally assembling a button cell according to a sequence of a positive electrode, a nanofiber membrane, the pre-polymerized solution and a negative electrode, after packaging, standing for a period of time under a certain condition, and carrying out in-situ free radical combination under a heating condition to obtain the button cell. The lithium metal battery based on the flame-retardant local high-concentration polymer electrolyte is obtained, and then the battery is connected to an electrochemical measurement system to measure the electrochemical performance of the battery. The preparation process is simple, the equipment technology is mature, and the safety performance and the electrochemical performance of the battery can be effectively improved.

The application discloses a circuit board for an automatic medical injector and a production process thereof, and particularly relates to the technical field of circuit board manufacturing. The circuit board for the automatic medical injector adopts an elastic bending-resistant substrate as a substrate, selects elastic metal as a raw material, adds polyether in synthetic fibers, has good mechanical physical properties and good temperature resistance, and adds plasticizers and organic silicon as an auxiliary. The circuit board has high and low temperature resistance, electrical insulation, oxidation resistance stability, and a reinforcing layer as metal rubber. The structure is stable, and the elastic bending-resistant substrate has good elasticity, toughness and bending resistance. The use of transparent film coating and protective film double-protects the upper surface of the circuit board body, has good protection effect, avoids the phenomenon that the surface of the elastic bending-resistant substrate is damaged due to damage of the transparent film coating, improves the structure of the circuit board body, and improves the safety function of the circuit board body.

This invention discloses a method for biasing 4-byte floating-point latitude and longitude coordinates based on a Feistel network. The method first converts the floating-point number into a binary representation in IEEE 754 format. The modification bit of the mantissa is determined based on the exponent, and this modification bit is inverted. An initial key is determined based on the exponent, and a 16-round key is generated using the SHA256 algorithm. The content of the byte following the modification bit is then encrypted using Feistel for 16 rounds. Finally, the data is converted back to an IEEE 754 floating-point number, thus achieving biasing. This invention employs a 16-round Feistel network for efficient operation, uses the SHA-256 hash function to generate a keystream for enhanced security, and can accurately recover the original data through inverse transformation. Therefore, it is efficient, secure, and reversible, making it suitable for spatial query services that require protection of latitude and longitude data privacy and error tolerance.

The utility model relates to the technical field of biological medicine, in particular to a saliva drug detection card which comprises a starting envelope, an annotation board arranged at the top end of the starting envelope, a detection card shell arranged on the inner side of the starting envelope, sawtooth anti-skid grooves formed in the two sides of the detection card shell, and a saliva detection opening formed in one end of the detection card shell. A longitudinal observation window is arranged at the end, away from the starting envelope, of the saliva detection opening, a window clamping groove is formed below the longitudinal observation window, a transparent plastic sheet is arranged on the window clamping groove, a mold channel is arranged below the transparent plastic sheet, and detection test paper is arranged on the mold channel. A transverse observation opening is formed in the side, away from the starting envelope, of the longitudinal observation window, a color contrast card is arranged below the transverse observation opening, a transparent plastic clamping block is arranged on the top side of the color contrast card, and a tail end chamfer is arranged at one end of the detection card. The types and quantity of reagent detection are enriched.

The invention discloses a PI nanofiber membrane for a lithium battery and a preparation method of the PI nanofiber membrane. The preparation method comprises the following steps: selecting proper dianhydride monomers, diamine monomers and polar aprotic solvents; the method comprises the following steps: mixing a diamine monomer with a solvent under an anhydrous condition to form a solution; adding a dianhydride monomer under a low-temperature condition, and slowly heating to carry out a reaction, so as to prepare a polyamide acid solution for later use; the preparation method comprises the following steps: taking a polyamide acid solution, adding the polyamide acid solution into a DMAC (dimethylacetamide) solvent, fully mixing, assembling into an ejector of an electrostatic spinning device, spinning under high voltage, receiving spun yarns through a rotating roller, and collecting for a period of time to obtain the PAA nanofiber non-woven fabric membrane. And the PI nanofiber membrane can be stretched at a higher stretch ratio during subsequent stretching, so that the mechanical property of the obtained PI nanofiber membrane is further improved, the safety characteristic of a lithium battery can be effectively improved, and the rate discharge characteristic of the lithium ion battery and the cycle characteristic of a power product can be improved.

The invention provides a combined switch handle, and belongs to the technical field of automobile parts. The groove frame is fixedly installed in the handle shell, the groove frame comprises an arc-shaped part, the end face of the arc-shaped part is provided with a first sliding groove face, and the first sliding groove face is provided with at least two gear grooves; the rotating seat is installed in the handle shell, a first bullet head is installed on the rotating seat and extends in the axial direction of the rotating seat, the top end of the first bullet head is connected with the first sliding groove face in an abutting mode, the first bullet head is provided with a first elastic piece, and the first elastic piece is connected with the groove frame; the first bullet head can stretch out and draw back in the axial direction of the rotating base through the first elastic piece. The invention has the beneficial effects that the first bullet head is designed to be axially arranged so as to reduce the requirement on the radial space of the handle, so that the outer diameter outline of the handle is thinner, and the overall aesthetic degree, overall coordination and compactness in a cockpit are improved.

The present application is applicable to the field of gas supervision technology, and proposes a gas supervision system, including terminal equipment, intelligent Internet of Things security gateway and gas supervision platform connected in sequence; the terminal equipment is used to connect to the intelligent Internet of Things security gateway and upload the terminal equipment information data to the intelligent Internet of Things security gateway; the intelligent Internet of Things security gateway is used to encrypt and package the information data of the terminal equipment into encrypted data packets and upload the encrypted data packets to the gas supervision platform using the 5G network; the gas supervision platform includes an integrated smart gas management and control subsystem, a blockchain subsystem, an identity authentication subsystem and a timestamp subsystem; the present application utilizes identity authentication, cryptographic algorithms, blockchain, edge computing combined with 5G technology to ensure equipment safety issues, data security issues, real-time supervision and accident tracing issues in the gas supervision process, and effectively improves the automation, digitization, visualization and intelligence level of gas supervision.

The invention provides experimental equipment for an intelligent power distribution switch cabinet and a use method thereof, the experimental equipment comprises an experimental equipment main body, and an isolation door and an insulation panel are arranged, so that the experimental equipment can protect an operator from being damaged by electric shock and other potential dangers during fault simulation. And by adding protection elements such as a leakage protector, an overload protector and a short circuit protector, a real circuit protection process can be simulated in an experiment, and the safety of the experiment is enhanced. By using a temperature sensor, a current sensor and a voltage sensor, key parameters in the experiment process can be monitored in real time and displayed on an experiment result display, and rapid analysis and fault diagnosis are facilitated. Therefore, researchers or technicians can better understand the performance of the power distribution switch cabinet under various conditions. Various faults possibly occurring in the power distribution system can be simulated through an overload simulation tester, a short circuit simulation tester and a fault signal generator in the fault simulation element.

The utility model relates to the technical field of computers, and discloses a safety device for computer network equipment. The safety device for the computer network equipment comprises a main machine body, a safety shell is movably connected to the outer surface of the main machine body, a protection plate is fixedly installed on the inner wall of the safety shell, an elastic plate is fixedly installed on one side of the protection plate, and a heat insulation plate is fixedly installed on one side of the elastic plate; a waterproof layer is fixedly smeared and connected to the outer surface of the containment, the elastic plate is fixedly mounted in the center of the interior of the containment, the heat insulation plate is fixedly mounted on the other side of the inner wall of the containment, and a top plate is movably connected to the upper portion of the containment. The protection function of the host body is added through the protection plate and the elastic plate, the structure of the safety device is reduced, the structure of the safety device is simplified, the use space of the safety device for the computer network equipment is reduced, and the practicability of the safety device for the computer network equipment is improved.

The utility model relates to a safe fingerprint mouse which comprises a mouse shell, a hole groove is formed in the surface of the mouse shell, a fingerprint sensor is arranged in the hole groove, and an anti-fingerprint coating is arranged on the surface of the fingerprint sensor. According to the safe fingerprint mouse, the anti-fingerprint coating is arranged on the surface of the fingerprint sensor, so that fingerprint residues are safely prevented, the risk of fingerprint leakage is avoided, and the physical safety characteristic is added for data safety of the safe fingerprint mouse.

The present invention relates to a method for manufacturing a lithium secondary battery, which can exhibit improved capacity and energy density and have excellent safety and life characteristics compared to existing lithium ion batteries and lithium metal secondary batteries.

The invention belongs to the technical field of battery temperature range widening, and discloses a preparation method of a lithium metal battery based on an all-weather polymer electrolyte, which mainly comprises the following steps: preparing a solution from an intrinsic flame-retardant high-molecular polymer, and preparing a porous membrane with a vertical channel by a phase separation technology; preparing an ether or ester organic solvent into a precursor solution through an in-situ curing state technology, adding an additive, adding a catalyst and a cross-linking agent at the same time to prepare a pre-polymerized solution, finally assembling the button cell according to the sequence of the positive electrode, the porous membrane, the pre-polymerized solution and the negative electrode, and after packaging is completed, standing for a period of time under a certain condition to obtain the button cell. And carrying out in-situ free radical combination under a heating condition to obtain the lithium metal battery based on the all-weather polymer electrolyte, connecting the battery to an electrochemical measurement system, and measuring the electrochemical performance of the battery. The preparation process is simple, the equipment technology is mature, and the temperature range of the battery can be effectively widened.