13results about How to "Avoid security impact" patented technology

The invention relates to the technical field of axial flow pumps, in particular to a blade angle adjusting device for an axial flow pump and the axial flow pump. The blade angle adjusting device comprises an impeller hub, a flow guide cover is fixedly installed at the bottom of the impeller hub, and a fixing frame inserted into the impeller hub is fixed to the top of the inner wall of the flow guide cover; first mounting holes which are annularly distributed at equal intervals are formed in the circumference of the impeller hub, the inner walls of the first mounting holes are connected with steering shafts through sealing bearings, pump blades are fixedly mounted at one ends of the steering shafts, and steering gears are fixedly mounted at the other ends, extending into the impeller hub, of the steering shafts. According to the axial flow pump, the angles of the pump blades can be flexibly changed, the axial flow pump can operate efficiently under different flow and lift requirements, when the angles are adjusted to be large, the rotating speed of the smashing shaft and the rotating speed of the smashing cutter are synchronously increased, hard objects such as branches are sufficiently and rapidly smashed, and the service life of the smashing cutter is prolonged. And hard objects are prevented from flowing into the axial flow pump along with quickly circulating water to influence the safety performance of the pump body.

The invention relates to the technical field of power optimization, and discloses a distributed power optimization method and system for a wind-solar power generation and energy storage system, and the method comprises the steps: calculating a daily power generation correlation coefficient between historical power generation data in a historical power generation data set of a target wind-solar power generation and energy storage system; performing data clustering on the historical power generation data set according to the daily power generation correlation coefficient to obtain a wind and light power generation data set, and performing data optimization on the wind and light power generation data set to obtain a target power generation data set; performing parameter optimization on the power prediction model according to the target power generation data set to obtain a target prediction model; calculating a predicted wind power sequence and a predicted photoelectric power sequence by using the target prediction model, and calculating power change probability distribution of the wind power sequence and the predicted photoelectric power sequence; and performing power adjustment according to the power change probability distribution pair to obtain the optimized output power of the target wind and light power generation energy storage system. According to the invention, the accuracy of distributed power optimization of the wind-solar power generation energy storage system can be improved.

This invention discloses a HART circuit and a method for determining the status of its field interface. The HART circuit includes: a control interface, an adjustable power supply module, a first HART module, an isolation module, and a field interface. The first HART module is connected to the control interface and is used to generate a first control signal when a first interrogation signal is input to the control interface. The adjustable power supply module is connected to both the control interface and the first HART module, and is used to output a first power signal to the control interface and modulate the first power signal into a first HART signal in response to the first control signal. The first end of the isolation module is connected to the control interface, and the isolation module is used to isolate the signal at its first end and couple it to its second end. The field interface is connected to the second end of the isolation module. This invention enables bidirectional communication between the control room and the production site, diversifies the application scenarios of the communication function of the HART circuit, and optimizes the performance of the HART circuit.

The utility model provides bearing outer surface polishing equipment, which relates to the bearing processing field, and comprises a fixed seat, an adjusting structure and a telescopic protection plate, the bottom of the fixed seat is provided with a rotating seat, the rotating seat is internally provided with the adjusting structure, the outer side of the adjusting structure is provided with a polishing roller, and the bottom of the rotating seat is provided with a connecting disc. A telescopic protection plate is arranged on the outer side of the connecting disc, a driving motor is arranged at the top of the rotating seat, and lifting frames are arranged on the two sides, away from the driving motor, of the rotating seat. And meanwhile, the telescopic protection plate shields the machining area, so that chippings generated in the grinding process can be effectively prevented from splashing to the external environment, the phenomenon that dust or metal particles enter the internal structure of the device to damage the device is prevented, the service life of the device is prolonged, and the safety of the device in the machining process is further improved.

The irrigation water diversion channel water recession system penetrating through the flood drainage ditch downwards comprises a water diversion channel and the flood drainage ditch which intersect with each other, water flows through the water diversion channel from the bottom of the flood drainage ditch through an inverted siphon pipeline, the upstream and the downstream of the inverted siphon pipeline are an upper water diversion channel and a lower water diversion channel respectively, and a water inlet of the inverted siphon pipeline is provided with a water control gate. The tail end of the upper water diversion channel is connected with the flood drainage channel through a recession gate; the water control gate is horizontally arranged at the bottom of the upper diversion channel and used for opening and closing a water inlet of the inverted siphon pipeline; a desilting basin is arranged at the bottom of the upper diversion channel at the upstream of the water control gate. The inverted siphon pipeline is used in cooperation with the water control gate, irrigation through the flood drainage ditch can be achieved, the water diversion channel can be blocked after irrigation is finished, residual water in the upper water diversion channel is guided into the flood drainage ditch through the water recession gate, and water recession is achieved.

This invention discloses a levitation control method, equipment, and medium for conventional maglev trains, belonging to the field of maglev transportation control technology. The method constructs a control framework based on a dynamic model of the levitation system and introduces an online residual estimation and compensation mechanism to compensate for track irregularities, aerodynamic disturbances, and unmodeled dynamics under complex operating conditions. A lightweight data-driven model obtained through cloud-based large-scale model knowledge distillation is deployed in the onboard edge computing unit to model the temporal characteristics of system state, track features, and external environmental information, estimating disturbance residuals in real time and generating compensating control quantities that are superimposed on the control input. Simultaneously, the cloud continuously optimizes model parameters based on historical operating data and issues updates, achieving iterative optimization of the control strategy. This invention can significantly improve the stability, dynamic response performance, and operational safety of the maglev train levitation system under high-speed operating conditions.

The detachable hoisting connection equipment comprises an unmanned aerial vehicle body, a winding shaft capable of winding a steel wire rope is arranged in an inner cavity of the unmanned aerial vehicle body, the end of the winding shaft is connected with a first motor, and the bottom of the steel wire rope is connected with a hook body through a connecting ring. A safety mechanism is hinged to the inner side of the hook body, a pull rope is hung on the hook body, the bottom end of the pull rope is connected with a hoisting box, a clamping plate is arranged in the hoisting box, and a sliding block at the top of the clamping plate is clamped in a sliding groove formed in the inner wall of the hoisting box. The device is scientific and reasonable in structural design, the clamping plates, the sliding blocks, the sliding grooves, the two-way lead screw, the second motor and other structures are arranged in the hoisting box, the distance between the two clamping plates can be adjusted according to the situation, then the positioning requirements of devices of different sizes can be met, and the devices are effectively fixed through the structure.

The invention discloses a face recognition method and device and computer equipment in the technical field of face recognition, and the method comprises the steps: obtaining a detection image; extracting face feature information in the detection image; calling human face information of the resident, and comparing human face feature information in the detection image with features in the human face information of the resident; judging whether the human face in the detection image is a resident or not; the information of house selling owners and lessees is updated in real time, so that the face information of the owners and the lessees is invalid and deleted in the owner face information storage module and the lessee face information storage module, and then the face information of inhabitants is called. When the human face feature information in the detection image is compared with the features in the human face information of the resident, the human face information in the human face storage in the detection image cannot be matched, so that the situation that the resident can still go in and out of a community or an office building at will, and the safety is affected to a certain extent is avoided.

This application provides a program execution method, apparatus, processor, chip, and electronic device. The method includes: determining a program to be executed; transmitting program information of the program to a security device, so that the security device matches the program with a whitelist based on the program information; receiving a matching result transmitted by the security device; if the matching result indicates that the program matches the whitelist, executing the program; if the matching result indicates that the program does not match the whitelist, starting a security container and executing the program within the security container. This application can ensure the security of the computer system while avoiding the high false alarm rate of the whitelist mechanism and improving the flexibility of program execution under the whitelist mechanism, thereby achieving program execution while balancing security and flexibility.

The invention discloses a switching operation double-confirmation method based on manual remote confirmation, and relates to the technical field of power system operation, and the method comprises the steps: S1, confirming that equipment is in an operable state and communication connection before starting, selecting an operation needing to be carried out on an operation host by an operator, and sending a one-key sequential control operation command; s2, the operation host issues the operation instruction to the target device and the repeater; and S3, automatically executing an operation command by the equipment according to the received instruction, and performing remote signaling feedback after the equipment executes the operation. Double confirmation of the switching operation is completed in a manual remote confirmation mode, misjudgment possibly occurring in microswitch and video recognition can be effectively avoided, operation accuracy is improved, and due to the fact that the manual remote confirmation mode does not need to depend on the reliability of the microswitch and video recognition, the manual remote confirmation mode is more reliable. Therefore, the operation safety can be prevented from being influenced by the microswitch and video identification faults at key operation moments.

The invention discloses a robot protection control method and device based on motion state detection, and relates to the technical field of robot control, and the method comprises the steps: obtaining motion state data and external collision data, evaluating an unbalance state, adjusting a joint motor to lower the gravity center if the unbalance state is unbalanced, carrying out the re-evaluation until balance, and obtaining the vibration data of a robot after the balance. And an avoidance demand is evaluated, and when avoidance is needed, an avoidance algorithm is used to execute avoidance until avoidance is not needed, and then the action is continued. According to the method, the motion state data and the external collision data are obtained, evaluation is carried out according to the posture anomaly coefficient and the collision unbalance coefficient, whether the robot is unbalanced or not is judged, the accuracy of robot unbalance judgment is improved, the joint angle of the robot is adjusted through the joint motor, the gravity center of the robot is transferred, and the robot unbalance judgment accuracy is improved. And the gravity center is lowered, so that the torque of the robot is reduced, the stability of the robot is improved, the balance of the robot is improved, and the action efficiency of the robot is improved.

The present invention provides a construction method taking into account the risks of hanging basket construction, which belongs to the field of construction technology, and specifically comprises: using a hanging basket to carry out bridge construction, and using a monitoring device to obtain in real time the fixed state changes of the installation position of the hanging basket during the construction process, determining the safety risk coefficient of the hanging basket based on the fixed state changes, and when it is determined through the safety risk coefficient that the hanging basket does not have a safety risk, obtaining the number of construction personnel using the hanging basket and weather data, and determining the safety risk assessment and analysis cycle of the hanging basket in combination with the safety risk coefficient of the hanging basket and the construction risk, thereby improving the safety of the hanging basket construction.

The utility model discloses a double-rotation waterproof coating stirring machine which comprises a machine body, feeding pipes are arranged at two ends of the top of the machine body in a groove sealing and penetrating mode, a discharging pipe is arranged below the bottom of the machine body in a groove sealing mode, a mounting plate is arranged above the top of the machine body through screws, and rotating shafts are arranged at two ends of the bottom of the mounting plate in a rotating mode. According to the double-rotation waterproof coating stirring machine, a mounting plate is mounted on the upper portion of the interior of the machine body through screws, then the two ends of the interior of the mounting plate are both provided with grooves in a rotating mode, and meanwhile rotating shafts are connected into the two transmission gears in a penetrating mode; and in the later period, a driving motor drives a rotating rod to rotate and drives a rotating gear to rotate at the same time, at the moment, the rotating gear can drive rotating shafts connected with the interiors of two transmission gears in a penetrating mode to rotate, and then the two rotating shafts can drive two rows of electric heating stirring rods to evenly mix and stir the conveyed-in waterproof coating.