13results about How to "Without compromising security" patented technology

The utility model provides a folding wooden children's learning tower, including upper tower and lower tower, the upper tower includes upper tower side plate, upper tower bottom plate and upper tower back plate, the upper tower side plate is provided on the two sides of upper tower bottom plate respectively and vertically connected, the two ends of upper tower back plate are connected on the upper tower side plate through back plate bolts, and the upper tower bottom plate is connected with the upper tower side plate through the back plate bolts. An overturning stop lever is arranged between the two upper tower side plates, the lower tower comprises lower tower side plates and a lower tower top plate, the lower tower side plates are fixedly connected to the two sides of the lower tower top plate respectively, and the lower tower top plate and the upper tower bottom plate are close to each other; the upper tower body and the lower tower body are arranged and rotationally connected through the hinge, the using function of the learning tower can be changed by changing the unfolding shape of the learning tower, the upper tower body and the lower tower body can be locked through the hasp, and it is guaranteed that when a child stands on the surface of the upper tower body, the hinge does not affect the safety of the whole learning tower; and the upper tower and the lower tower cannot be easily folded, so that the safety is enhanced.

The present application relates to a kind of laser radar and camera online self-calibration method and system without induction, the method includes: S1.in the process of vehicle driving, through multi-source trigger mechanism acquisition laser radar point cloud data and camera image data, simultaneously obtain vehicle motion state information and automatic driving perception system output result, the multi-source trigger mechanism includes time trigger, event trigger and cloud data mining trigger parameter degradation model;S2.the pre-processing and feature extraction of the multi-source data collected, obtain laser radar point cloud feature and camera image feature;S3.based on geometric constraint, motion consistency and perception result fusion, constructs multi-modal verification model, and carries out multi-dimensional verification to calibration parameter.The present application not only reduces the artificial maintenance cost, through automatic means maintenance vehicle state to achieve sensor calibration parameter degradation self-detection and self-calibration without induction, and improves the reliability and attendance rate of automatic driving vehicle.

The invention discloses a safety torque cancelling circuit which comprises a channel loop configured to obtain a safety signal from a safety loop of an elevator and cut off a power supply of an isolation driving unit of an upper bridge arm switch tube or / and a lower bridge arm switch tube in response to the state of the safety signal; and the diagnosis loop receives the output state of the channel loop and is used for cutting off the driving signal of the upper bridge arm switch tube or / and the lower bridge arm switch tube when the diagnosis is abnormal. While electronic star sealing is realized, the fault margin and safety of the STO are not reduced. In addition, as the STO only blocks the driving signal of the upper bridge arm or the lower bridge arm, the lower bridge arm or the upper bridge arm can adopt an electric braking method for improving the braking torque disclosed by CN117997175A.

The utility model provides a top cover assembly, a battery monomer, a battery and a power utilization device, and relates to the technical field of batteries, the top cover assembly comprises a top cover sheet, a pole and a first insulating piece, the top cover sheet is provided with a first surface, a second surface and a first through hole, the pole comprises at least one first connecting part and at least two second connecting parts, the first connecting part is arranged on one side, provided with the first surface, of the top cover sheet and is used for being connected with an electric connecting piece, and the second connecting part is used for being connected with a tab; the first insulating part is fixedly connected to the pole and the top cover piece and comprises a second insulating part and a third insulating part which are connected, the second insulating part is arranged between the hole wall of the first through hole and the second connecting part of the pole, and the third insulating part is arranged on the side, provided with the first face, of the top cover piece; therefore, the first insulating part has fixing, insulating and sealing effects at the same time.

This invention provides a two-way plastic stacking barrel, relating to the technical field of plastic packaging barrels. The two-way plastic stacking barrel includes a barrel body, a handle, and a barrel opening component. The upper part of the barrel body has a handle groove, a barrel opening groove, a raised strip, and a top flat surface. The lower part of the barrel body has a groove, symmetrical side grooves, and a bottom flat surface. The handle is disposed within the handle groove and connected to the barrel body; the barrel opening groove communicates with the handle groove; and the barrel opening component is disposed within the barrel opening groove. The groove is adapted to the raised strip, the symmetrical side groove communicates with the groove, and the bottom flat surface is adapted to the top flat surface. This two-way plastic stacking barrel solves the technical problem of existing plastic packaging barrels having poor stacking stability and flexibility, affecting the safety and efficiency of material storage and transportation.

This invention discloses a construction method for deep and large foundation pits without the need for replacement supports, belonging to the field of underground structure sequential construction technology. During the main structure construction, after the previous formwork sidewall is completed, only the next steel support is removed; replacement supports are no longer installed, thus eliminating the need for replacement supports. Only the concrete supports are cut, retaining the lintel beams, which function as part of the sidewall, allowing them to play a role in both the excavation and main structure construction phases. The bottom slab ribs are adjusted from triangular bevels to stepped shapes, allowing the scaffold uprights to act vertically on the ribs, ensuring the overall stability of the scaffold. The increased rib cross-sectional dimensions reduce the impact of lateral deformation of the foundation pit on the sidewalls. This invention shortens the construction process, reduces construction costs, ensures foundation pit safety, and has good economic benefits.

The application discloses a dual-mode reduction operation system and method for lattice-based cryptography hardware acceleration, and relates to the technical field of cryptography and information security. The system comprises a routing control unit, which is used for receiving intermediate result data generated in a lattice-based cryptography algorithm operation process, and generating corresponding routing control signals according to the operation type of the intermediate result data, and outputting the intermediate result data and the routing control signals to corresponding data output ends; a first modular reduction operation unit, which is used for executing Montgomery reduction operation based on a prime number condition on corresponding intermediate result data when receiving a routing control signal of modular multiplication operation; and a second modular reduction operation unit, which is used for executing Barrett reduction operation with 2 as a base on corresponding intermediate result data when receiving a routing control signal of modular addition operation. The application can optimize the implementation performance of the algorithm without affecting the security, and is suitable for various software and hardware environments.

The application provides a multi-component composite electrolyte, a preparation method and application thereof in a zinc ion battery. The preparation method of the multi-component composite electrolyte comprises the following steps: adding acetamide and asparagine into a ZnSO4 solution, stirring and uniformly mixing, and standing to obtain the multi-component composite electrolyte. The application realizes the water-based zinc ion battery with long normal / low-temperature cycle life, stable electrode / electrolyte interface and strong corrosion resistance by the method of compensating the negative influence of kinetics caused by the organic solvent, introducing acetamide into the ZnSO4 electrolyte to improve the wide-temperature-range adaptability of the battery, and introducing asparagine to compensate the reversibility of Zn deposition kinetics.

The application provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer includes polymer A and the polymer B at least partially coated on the surface of polymer A, the crosslinking degree of polymer A is X1, the crosslinking degree of polymer B is X2, 5%≤X1≤10%, 50%≤X2≤60%;The non-fluoropolymer composite diaphragm includes base film and coating layer coated on at least one side of base film.The non-fluoropolymer particles of the application have a higher swelling rate at high temperature, also have the reversible characteristics of absorbing and releasing electrolyte, the non-fluoropolymer and the non-fluoropolymer composite diaphragm are applied in the battery, when the battery abnormally heats, the non-fluoropolymer swells rapidly, blocks the ion shuttle channel, avoids the further deterioration of temperature, improves the safety performance of the battery, and when the temperature returns to normal, the non-fluoropolymer particles can restore to the original morphology, restore the ion shuttle channel, so as to not affect the subsequent cycle performance of the battery.

The invention discloses a multi-power output device for an aircraft and a control method thereof, the device comprises a converter, the converter comprises a first-stage conversion module and a second-stage conversion module, the first-stage conversion module is configured to receive input of different power supplies from an aircraft power grid and convert the input into intermediate direct current voltage, and the second-stage conversion module is configured to receive input of the different power supplies from the aircraft power grid; the second-stage conversion module is a DC / AC (direct current / alternating current) inversion module and is configured to invert the intermediate direct current voltage and output the intermediate direct current voltage into single-phase alternating current with different modulation wave frequencies; the controller is configured to control the modulation wave frequency of the second-stage conversion module; and the relay switching circuit is used for switching between the first output channel and the second output channel. Numerous other aspects are also disclosed. According to the device and the control method, the system architecture can be simplified, the aircraft space is saved, and the system integration degree and reliability are improved.

The invention relates to a tire pressure monitoring method and equipment. The method comprises the following steps: acquiring tire state data acquired by a sensing element; under the condition that the tire state data meets the tire pressure abnormal condition, a tire pressure abnormal notification is sent to a Bluetooth module so as to indicate that the Bluetooth module is in an idle state, responds to the tire pressure abnormal notification, is converted from the idle state to a broadcast state through a Bluetooth state machine and is converted to a communication state through the Bluetooth state machine after communication connection with external equipment is established; and sending the tire state data to the Bluetooth module so as to indicate the Bluetooth module to send the tire state data to external equipment when the Bluetooth module is in the communication state. The method can ensure the safety of the vehicle.

This invention relates to the field of power system technology, specifically to a method, apparatus, computer equipment, and storage medium for determining maintenance plans. In this invention, by analyzing power flow without considering maintenance plans, the number of integer variables in the maintenance plan is effectively reduced, thus reducing the column size of the maintenance plan model. Simultaneously, when the maintenance plan model has no solution, a linear relaxation model is constructed. Lagrange multipliers are used to identify maintenance branch variables that affect power flow exceedance limits. Furthermore, because the linear model solves quickly, its impact on overall computation time is negligible. For cases where branch exceedances cannot be eliminated, short-term and certain degrees of exceedances are allowed, constructing flexible limit constraints to improve the model's convergence.

The invention discloses an automobile drag reduction control method and system based on a follow-up wave generation device, and relates to the technical field of active flow control, and the method comprises the steps that an exciter array distributed in a master-slave partition mode is arranged based on a key pneumatic area of a target vehicle; acquiring vehicle state data and flow field state data of the target vehicle in real time; acquiring a time delay and a space-time trigger sequence based on the vehicle state data; acquiring an external modulation frequency and a duty ratio of the exciter array based on the flow field state data; a high-voltage electric signal conforming to time delay, a space-time trigger sequence, external modulation frequency and a duty ratio is generated to serve as a control instruction; the exciter array is controlled to generate plasma volume force based on the control instruction, a follow-up wave regulation and control flow field is formed, and the aerodynamic resistance of the target vehicle is reduced. Generation and development of separation vortexes are actively regulated and controlled, flow separation is delayed, and a wake flow area is reduced, so that aerodynamic resistance of an automobile under various running working conditions is remarkably and stably reduced, and the energy efficiency ratio is increased.