22results about How to "Take security into consideration" patented technology

This disclosure provides a method, apparatus, electronic device, and storage medium for signing compressed files, relating to the field of security. The method includes: obtaining bytes from a specific location in a file to form a byte array; calculating a digest of the byte array using a digest algorithm; and encrypting the digest using a private key to generate a signature. Implementing the technical solution of this disclosure can reduce the computational load required to calculate the digest and improve the signing speed.

The utility model relates to the technical field of flat coal machine, specifically disclose a kind of flat coal machine hopper positioner, comprising: flat coal machine main body, flat coal machine main body both sides are equipped with pitch frame, pitch frame is fixedly connected with mounting bracket, mounting bracket is fixedly connected with collision detection component, collision detection component detects the safety distance of flat coal machine and carriage, pitch frame other end is equipped with limiting component, limiting component is positioned to the stroke of flat coal machine main body up and down pitch, by setting collision detection component, real-time accurate monitoring hopper and carriage distance, trigger fast evasion collision risk after, by setting limiting component, strictly limit pitch overtravel, completely solve the security loophole of traditional manual operation, substantially reduce the accident rate of equipment collision damage, bottom contact etc., overall mutual cooperation adapts different carriage and coal quantity, and safety, adaptability and economy are considered, the protection performance and practicality of core component are prominent.

The invention discloses a motor locked-rotor protection driving circuit, which relates to the field of motor locked-rotor protection, and is characterized in that a first thermosensitive detection unit and a second thermosensitive detection unit are respectively connected between two output ends of a motor and a corresponding power switch unit in series; and the control module automatically pulls down the control end of the connected power switch unit to be below a cut-off threshold value during stalling, so that a corresponding current path is cut off, and automatic stalling protection is realized. Although the scheme is realized on the basis of discrete electronic elements, a current sampling resistor, a voltage comparator and a latch logic circuit which are necessary in a traditional discrete scheme are omitted through a thermal-electric direct linkage mechanism, and self-triggering protection can be completed only through few devices such as a thermistor, a bipolar transistor and a bias resistor; according to the invention, customization limitation of a special driving chip is avoided, defects of large size, high cost and low reliability of a traditional discrete circuit are overcome, a topological structure is obviously simplified, and system cost, size and failure rate are reduced.

This application relates to the field of intelligent door and window technology, and provides a method and system for real-time protection and linkage control of intelligent doors and windows. The method includes: when the window sash is closed, after detecting that the current current of the motor driving the window sash exceeds a first preset current threshold, determining that the window sash has encountered a physical obstacle, and acquiring rotation data generated by the window sash's tentative contact with the physical obstacle; determining the type of obstacle based on the rotation data; acquiring environmental parameter information of the room where the window sash is located; determining the risk level of the room based on the environmental parameter information; and determining and executing protective actions based on the risk level and obstacle type. This method can improve the efficiency of door and window control.

The invention discloses an intensive care restraint device and a use method. The device comprises a sleeve; the lantern ring is fixed outside the sleeve; the annular air bag is fixed in the sleeve; the bandage penetrates through a gap between the inner side of the lantern ring and the outer side of the sleeve; the connecting pipe is fixed on the surface of the sleeve; the air leakage assembly communicates with the surface of the connecting pipe. Through the arrangement of the built-in annular air bag, the annular air bag can uniformly wrap and be attached to the limbs of a patient after being inflated, concentrated binding force of a traditional binding band or a rigid structure is converted into uniform surface pressure provided by the annular air bag, the risk of skin bruise and nerve and blood vessel injury is reduced, the comfort of the patient is improved, the air bag can be conveniently inflated through the inflating assembly, and the air bag is convenient to use. The restraint tightness is accurately adjusted, the restraint effect is ensured to be reliable, quick deflation can be achieved through the deflation assembly, restraint loosening or adjustment can be conveniently and emergently achieved, the overall structural design is reasonable, operation is easy and convenient, and restraint effectiveness, patient safety and clinical nursing convenience are all considered.

This invention discloses a positioning stent for convenient fixation and safe removal within human blood vessels, relating to the field of surgical medical device technology. The positioning stent comprises: a metal wire stent with multiple pointed positioning spikes, each spike including an inner metal wire and a covering layer; the inner metal wire is connected to the metal wire of the metal wire stent, the diameter of the inner metal wire being smaller than the diameter of the metal wire of the metal wire stent; the covering layer is conical and made of a biodegradable material; the tips of the inner metal wires and the tips of the covering layer are spaced a predetermined distance apart, and the middle portion of the inner metal wire forms a spiral portion; after the covering layer degrades, the spiral portion changes from a compressed state to an extended state, allowing the inner metal wire to pierce the blood vessel wall, with a predetermined gap between the blood vessel wall surface and the surface of the metal wire stent. This invention achieves reliable stent fixation and safe removal.

The application aims to provide a superheat control type ammonia fuel supply system based on fuel activity design, belonging to the field of fuel supply, comprising a liquid ammonia common rail type supply system, a diesel common rail type supply system, a fuel injection device, a superheat control unit and other components of an engine. Hydroxyl-rich gas is used as a combustion-supporting agent instead of pure hydrogen fuel. The safety of the system is ensured, the dynamic thermal management characteristics during engine operation are fully considered, ammonia fuel superheat control is performed, and the direct control form of the sleeve type valve rod strong magnetic force electromagnetic actuator is adopted for the ammonia fuel injection of the application, realizing high response and precise injection of the double fluid mixed gas. The electromagnetic actuator structure of the multi-hole valve rod is adopted to realize the rapid response of the control valve and the separation of the servo oil circuit and the supply oil circuit; the new valve rod structure is adopted to reduce the weight of the valve and the electromagnetic force demand, improve the response performance, and fundamentally avoid the cavitation problem caused by the traditional control valve structure.

This invention discloses a polyacid-based mild acne-removing composition, its preparation method, and its application, belonging to the field of acne treatment preparation technology. By mass percentage, the polyacid-based mild acne-removing composition comprises 1%–10% bee venom peptide, 0.25%–5% microcapsules containing polydeoxyribonucleotides, 0.2%–1.5% soothing active ingredients, 0.5%–3% biosaccharide gum-1, 0.2%–2% biosaccharide gum-2, 0.05%–0.5% astragalus gum, 0.1%–1% pH buffering compound, 2%–10% acid mixture, and 3%–20% alcohol mixture, with the balance being water. This acne-removing composition achieved a low-irritation user experience with a high-concentration polyacid formula in subjects with sensitive, mild to moderate facial acne, effectively improving the problems of poor tolerance and limited applicability of traditional acid-based acne products for sensitive skin, significantly broadening the applicable skin types and application scenarios for high-efficacy acid-based acne products, and balancing effective acne removal with safety suitable for sensitive skin.

This utility model discloses a flight training simulation device, including a simulation cabin, a moving mechanism, a limiting mechanism, and a power mechanism. The moving mechanism is located below the simulation cabin; the limiting mechanism is located on one side of the simulation cabin and is used to limit the braking range of the simulation cabin; the power mechanism is connected to the moving mechanism and is used to drive the moving mechanism to rotate. The limiting mechanism includes a column, a limiting frame, and a limiting plate. One end of the limiting frame is connected to the column, and the other end is sleeved on the limiting plate, which is located on the upper surface of the simulation cabin. By using the limiting plate and the limiting frame in conjunction, the forward and backward braking range of the simulation cabin can be limited, and the lifting height of the simulation cabin can also be limited, ensuring the safety of the simulation cabin in the simulated state.

This application belongs to the field of acoustic technology and relates to a wearing structure and headphones. The wearing structure is applied to headphones and has a sound transmission hole. A clearance portion is provided on the first side of the wearing structure, which is connected to the sound transmission hole. When the wearing structure is in the wearing state, it is located outside the ear canal opening of the auricle, and at least a portion of the wearing structure is engaged with the concha cavity of the auricle. The first side is the side of the wearing structure facing the ear canal opening, and the clearance portion is used to create a gap between at least a portion of the first side of the wearing structure and the ear canal opening. The wearing structure and headphones provided by this application, where the wearing structure is engaged with the concha cavity for wearing, and the wearing structure and sound transmission hole are located outside the ear canal opening, can effectively protect the user's hearing from damage and are less likely to cause discomfort even after prolonged wear. By providing a clearance portion on the first side of the wearing structure, the wearing structure at least does not completely cover the ear canal opening, allowing the user to hear the external sound environment.

The utility model discloses a kind of modularization connecting devices of heating furnace fuel gas soft connection, it is related to fuel gas delivery technical field.The modularization connecting device of heating furnace fuel gas soft connection, including furnace body, the support seat is fixedly installed in furnace body side, support seat is fixedly installed with inlet end, the flange end face of inlet end is closely attached with sealing ring, the end face of the flange of gas outlet flange is closely attached with the side of sealing ring away from inlet end, and the flange between inlet end and gas outlet flange is fixedly connected by four fastening bolts, the other end of gas outlet flange is fixedly installed with bellows, floating frame is rectangular ring structure and is set in bellows outside, the other end of bellows is fixedly installed with gas inlet flange, and the flexible characteristic of bellows can compensate displacement generated by vibration, thermal expansion and contraction, avoid stress damage of rigid connection, ensure fuel gas transmission continuous stability, overall structure gives consideration to security, stability and maintenance convenience, improve device operating reliability and durability.

This invention discloses an AC intelligent power distribution module, an intelligent power distribution cabinet, and a power distribution control method, belonging to the field of power distribution control technology. The AC intelligent power distribution module integrates a semiconductor switch, a main control module, a current monitoring module, and a voltage monitoring module, and is equipped with multiple protection mechanisms. The current monitoring module and the voltage monitoring module each have independent hardware and software protection circuits, achieving dual fast protection. Through drive control protection, in the event of a short-circuit fault, the gate voltage is first pre-dropped to suppress the current peak before completely shutting off. The module also includes a fuse as backup physical isolation. Through modular design and multiple protection mechanisms, this invention achieves the technical effects of a compact power distribution cabinet structure, fast response speed, strong protection capability, flexible parameter configuration, and remote intelligent monitoring.

This invention provides a welding device for industrial robot manufacturing, relating to the field of welding equipment technology. It includes a welding mechanism mounted at one end to the end of a robot body via a connecting mechanism. The connecting mechanism includes a floating column mounted on the end of the robot body, a floating disk axially and slidably passing through a floating cavity within the floating column, a floating rod with one end vertically positioned at the center of the floating disk's end and the other end movably extending through the end of the floating column, a resistance adjustment component mounted on the floating column and controlling the sliding resistance of the floating disk within the floating cavity, a fine-tuning component mounted at one end of the floating rod, and a control system electrically connected to both the adaptive floating component and the welding mechanism. The control system controls the sliding resistance of the floating disk through the resistance adjustment component based on feedback information from the welding mechanism's operation. A through hole is provided on the end face of the floating disk. This invention achieves adaptive floating adjustment and rapid, precise attitude adjustment of the industrial robot welding device.

This invention discloses a laser cutting machine for precision workpiece machining, capable of automatically positioning the workpiece. It relates to the field of precision workpiece machining technology and includes a worktable and a positioning assembly. A support roller is rotatably connected to the center of the worktable, and a waste bin is located below the worktable. A three-axis slide module is installed at the rear of the worktable, and the output end of the three-axis slide module is connected to a laser cutting head. During positioning, the drive motor first drives the two slide blocks to move synchronously towards each other via positive and negative threaded screws. A buffer spring pushes the roller frame and its rollers to contact the workpiece. The buffer spring, with its low elastic coefficient, ensures a gentle contact force. After initial positioning, the slide blocks continue to move, compressing the buffer spring. The drive slotted plate, through rollers, drives the positioning seat and positioning plate to complete the final rigid clamping. This process of first guiding and then locking can complete high-precision automatic centering within seconds, resulting in high positioning accuracy.

This invention relates to the field of heme purification technology, and more particularly to a method for extracting and purifying heme chloride. The method includes: taking fresh animal blood, centrifuging to collect the lower red blood cell precipitate, adding physiological saline, mixing, and washing; adding a 1-10% ethanol solution, mixing, and ultrasonically disrupting at 300-800W for 15-60 seconds to obtain a red blood cell lysate; adding an acidic acetone solution to the red blood cell lysate, mixing, and extracting at room temperature, centrifuging to collect the supernatant to obtain an acidic acetone extract; slowly adding NaOH solution to adjust the pH; adding sodium acetate, stirring, allowing to stand, collecting the precipitate, washing, and drying to obtain a crude product; packing a silica gel column; loading the crude product onto an eluent, eluting with an eluent and collecting the eluent fraction containing the target product; the eluent includes dichloromethane, methanol, and formic acid; and removing the mobile phase from the eluent fraction. The advantages are: simple process, low cost, environmentally friendly, and the ability to obtain a high-purity product.

This invention discloses a method, apparatus, and device for detecting infant vital signs using millimeter waves. The method includes a visible light acquisition unit that acquires visible light image sequences of the crib surface area, a millimeter wave acquisition unit that simultaneously acquires millimeter wave echo data of the crib surface area, a target range determination module that combines a preset or calibrated crib surface area with the infant's body area detected by the visible light images to determine the target position range of the infant on the crib surface and map it to the millimeter wave detection range, and a dynamic gating module that controls the freezing, restoration, or restart of the millimeter wave vital sign detection process. Through the collaborative design of visible light-assisted and millimeter wave vital sign detection, based on a preset or calibrated crib surface area and combined with the infant's body area detection results, the target position range of the infant is mapped to the millimeter wave detection range. Vital sign signals are extracted based on the echo data of this target range, improving the targeting and effectiveness of millimeter wave vital sign detection.

The invention belongs to the technical field of elevators, and discloses an elevator emergency control device which comprises a main power supply mechanism, a cabinet body and a standby power supply mechanism. A power supply switching controller is arranged in the cabinet body, a relay is arranged in the cabinet body on one side of the power supply switching controller, and a standby power supply mechanism is arranged in the cabinet body on one side of the main power supply mechanism; dual-power-supply configuration is adopted, four-stage power supply guarantee of the main power supply, the UPS, the standby power supply and the manual generator is constructed, power is supplied by the main power supply in a normal state, the UPS has no flash stop power supply for about half an hour when the main power supply is powered off, the power is automatically switched to the standby power supply after the power is used up, short-time flash stop is only generated for 0.03 second, the main power supply and the standby power supply are powered off, the UPS has no power, and the generator can be manually started. By matching with real-time monitoring, ARD low-speed leveling, door machine delay door opening and rapid manual switching, people trapping can be avoided, safety can be guaranteed, electrical risks and operation and maintenance cost are reduced through graded shunt protection, remote supervision is achieved through a communication interface, and safety and benefit are both considered.

The utility model relates to the technical field of household appliances, and discloses a water receiving tank and cooking equipment, the water receiving tank comprises a metal framework and a heat insulation coating layer, the metal framework forms a main body framework structure of the water receiving tank, the metal framework is in a long strip shape, and a water collecting tank is formed in the metal framework; and the heat insulation coating layer coats the outer surface of the metal framework. According to the water receiving tank, the structure that the metal framework is wrapped by the heat insulation wrapping layer is adopted, the metal framework effectively avoids thermal deformation, the heat insulation wrapping layer plays a role in heat insulation, and through the composite structure of metal and heat insulation materials, the function reliability of the water receiving tank is guaranteed, and meanwhile safety in the high-temperature environment and user operation convenience are taken into consideration.

This invention relates to a method for sharing real-time IPTV content to a mobile terminal for playback, belonging to the field of wireless communication and terminals. The method includes: the IPTV device and the mobile terminal sending a STUN request to a public STUN server to bypass NAT and automatically obtain the corresponding public IP address; the IPTV device and the mobile terminal establishing an IPSec encrypted tunnel based on the IPSec protocol; the IPTV device receiving the operator's playback stream, extracting video and audio data, re-encapsulating it into RTP format, encrypting it, and transmitting it to the mobile terminal through the IPSec encrypted tunnel; the mobile terminal decrypting and verifying the integrity of the data packets, extracting the RTP payload, and playing the corresponding video and audio data in real time; the mobile terminal sending control commands to the IPTV device through the IPSec encrypted tunnel; the IPTV device parsing the control commands and calling an API to switch channels, synchronously updating the electronic program guide information to the mobile terminal. This method enables mobile devices to remotely receive and play television channel content from a home IPTV device via the public network, overcoming spatial limitations.

The application provides a bedside respiratory evaluation and individualized treatment system and method based on AI intelligent interpretation, which comprises: a respiratory evaluation data acquisition unit, a scale module integrated with a built-in multi-dimensional evaluation system, and a device interface module compatible with multiple brands of trainers; a bedside workstation core interaction unit for multi-source data integration; an AI intelligent interpretation engine unit carrying a lightweight deep learning model, which extracts features through a CNN-RNN fusion model and an attention mechanism, and generates diagnostic opinions in combination with a dynamic threshold library and a diagnostic reasoning module; an individualized treatment plan generation unit which generates a treatment plan containing training parameters and evaluation nodes through a multi-objective optimization algorithm; and an efficacy tracking feedback unit which acquires reevaluation data in real time and dynamically adjusts the scheme according to the efficacy analysis results, forming a closed-loop diagnosis and treatment mode. The application realizes the bedside integration of multi-source data fusion, AI intelligent interpretation and individualized treatment, and improves the diagnosis and treatment efficiency, consistency and accuracy.

The application discloses a kind of anti-fraud identification method, medium and product.The method comprises: in response to the trigger of preset high-risk behavior event, determine the behavior characteristic data corresponding to preset high-risk behavior event;According to terminal running context information determination data communication parameter, and adjust behavior characteristic data according to data communication parameter;The adjusted behavior characteristic data is sent to edge server, to make edge server based on behavior characteristic data carry out anti-fraud identification, generate anti-fraud identification result;Receive the anti-fraud identification result returned by edge server, and execute corresponding anti-fraud decision operation based on anti-fraud identification result.The application not only guarantees the timely, reliable disposal of high-risk event, but also balances between communication efficiency, energy consumption, security and data integrity, improves the running robustness and overall security response efficiency in weak network environment, and gives consideration to security, real-time performance, energy efficiency and user experience.

The utility model discloses an automatic edge trimming device for rubber shoes relates to rubber shoes production technical field, aims at solving the problem of existing trimming mode depends on manual, poor safety, low efficiency and quality is unstable and so on. The device includes support frame, cross arm, auxiliary arm, trimming support, trimming cutter and auxiliary trimming mechanism, the auxiliary trimming mechanism contains base, riser, adjusting part, drive motor, positioning shoe mould and rotating shaft, and the base is fixed in the frame, and the riser is parallel and is established in the base, and the adjusting part can rotate and is installed between the riser, and the drive motor is built -in adjusting part, and the rotating shaft is connected motor and positioning shoe mould. Adjusting part can multi -angle locking, adapts to different shoe type, and control switch synchronous control motor and cutter start -stop, and rubber shoes are fixed in shoe mould and rotate with motor drive, and cooperate cutter and complete automatic trimming. The device replaces manual handheld operation, improves safety and efficiency, guarantees trimming quality uniformity, and has strong versatility.