236results about How to "Avoid unstable situations" patented technology

The invention provides a lane line positioning method based on multi-feature fusion and a polymorphism mean value. According to the method, images of road conditions in front of vehicles are obtained through a camera; the gray level distribution information of lane lines and the color distribution information in an HSI space are fused according to weight to obtain a lane line suspected area according to the pavement gray scale normal distribution features and the HIS color space information; then, according to priori knowledge, the searching is carried out from the middle of a road to the two sides for excluding non-lane regions, and sub images which avoid the non-road feature interference and contain the lane lines are obtained; then, the sub images are subjected to margin determination; Hough transformation is adopted for detecting straight lines for determining the positions of the lane lines in the current frame; and finally, through fusing the multi-frame lane line states and utilizing the actual condition that the lane line positions cannot suddenly change, the mean value of detection results of continuous frames is worked out, and stable lane line positioning results are obtained.

A message proces method A system and a computer-readable storage medium, The method comprises: the server receives the message subscription instruction sent by the client, monitor the default policy database, Change information recording changes in data in the policy database is stored in a file server, and receives the file identification information returned by the file server, A release messagecarrying service processing information is generated according to the change information, The client end extracts the service processing information contained in the published message, and extracts the change information from the file server according to the received file identification information, and outputs the change information to the client end, so that the user performs service processingaccording to the change information and the service processing information. The technical proposal of the invention can timely publish the insurance policy service data to be processed to the clientfor processing through the mode of subscribing data by the user, so as to improve the processing efficiency of the insurance policy service data.

The invention discloses a multipoint pre-aiming LQR transverse control method based on a Fiala brush tire model. The method comprises the steps that 1, establishing a vehicle two-degree-of-freedom kinetic model and a tracking error model based on a vehicle striking center; 2, establishing a state space equation of the system; 3, combining the path curvature serving as disturbance quantity with a state vector of the system to construct an augmented LQR control problem; 4, solving a Riccati equation of the augmented LQR system to obtain an optimal feedforward control quantity and an optimal feedback control quantity; and 5, utilizing the obtained optimal control quantity, namely the front wheel lateral deviation force. According to the invention, curvature information of a plurality of roadpoints can be pre-aimed through the LQR controller in a limited time domain; in addition, the front wheel lateral deviation force can be restrained through the front wheel rotating angle under the condition that the vehicle has large transverse acceleration, so that the vehicle can keep good transverse stability and path tracking precision, and the situation that the vehicle is unstable due to tire force saturation under the limit working condition is avoided.

The invention discloses a male joint of a coaxial cable connector, which comprises a central conductor, an insulator and an outer conductor, wherein the front end part of the central conductor is provided with a conical protrusion, while the rear end part is a cylinder used for inserting an inner conductor of coaxial cable; the insulator is provided with a through hole; the outer conductor is divided into a front section, a middle section and a rear section; the front section is transited to the middle section through a first step; the first step is provided with a compensating ring; the internal diameter of the middle section is matched with the external diameter of the insulator; the internal diameter of the rear section can be inserted by the coaxial cable; the internal surface of the middle section is transited to the internal surface of the rear section through a second step; the second step is used for axially positioning the insulator; the internal diameter of the through hole of the insulator is matched with the external diameter of the cylinder at the rear end part of the central conductor; and one part of the cylinder at the rear end part of the central conductor is inserted into the through hole of the insulator. The male joint meets the conventional technical standards; the insulator can be directly plugged from a plugging end; one part of the cylinder of the central conductor is inserted into the through hole of the insulator and is stably fixed, so, the male joint is more convenient to assemble.

The present invention pertaining to the field of information security, discloses a method for improving stability of an intelligent key device and an intelligent key device. The method comprises the steps of the intelligent key device establishing a connection with a host computer, opening a first interruption, reporting to the host computer that the intelligent key device is a composite device which at least comprises two virtual units, receiving and analyzing message commands sent by the host computer, closing the first interruption, judging that whether the time needed for processing the message commands exceeds a predetermined time, if true, processing the message commands, opening a second interruption, keeping processing when receiving subsequent message commands or informing the host computer to perform a delay process, closing the second interruption and opening the first interruption; if not, processing the message commands, storing the processing result and opening the first interruption. The intelligent key device comprises a USB interface module, a first interruption module, an intelligent key module and a second interruption module. According to the present invention, stability of communication between the intelligent key device and the computer is improved.

The invention belongs to the preparation and application fields of chlorine dioxide, and particularly relates to a continuous production device of composite chlorine dioxide and a technology. Multi-stage reaction is adopted in the method so as to make alkali metal chlorate and hydrochloric acid react sequentially in environments with different acidities and temperatures, and the raw material conversion rate and the purity of the chlorine dioxide are greatly increased; a purifier is adopted to greatly reduce chlorate and chlorite which enter water; the problems of gas-water mixed transportation and multi adding point distribution are solved via gas-liquid separation; and the absorption and the addition of a water injector are separated so as to ensure the stable running of the device.

The embodiment of the invention provides a video target detection method and device and image processing equipment. a MaskRCNN network is pre-stored in the equipment, and the equipment comprises a CNNmodel, an RPN, a detection branch and an embedded branch. The image processing device inputs the current image frame into a CNN model for the current image frame of the to-be-detected video to obtaina first feature map; the first feature map is input into an RPN to obtain a plurality of candidate regions, the candidate regions being regions including a to-be-detected target; For each obtained candidate area, the embedded branch generates a first vector corresponding to the candidate area, whether a second vector similar to the first vector exists or not is searched for in a stored embedded list, and if yes, the first vector is updated; And the detection branch predicts the position of the candidate region by taking the updated first vector as time sequence information.

The invention discloses a visual positioning method and device. The method comprises the steps of: obtaining videos acquired by the image sensor; determining visual positioning information corresponding to each frame of image in the video and an acquisition pose transformation relationship of an image sensor corresponding to each frame of image; and optimizing the visual positioning information corresponding to each frame of image by taking the acquisition pose transformation relationship corresponding to each frame of image as an edge constraint, and determining a visual positioning result when the image sensor acquires the video according to an imaging processing result. Compared to the prior art, the visual positioning information corresponding to each frame of image in the video of thespecification meets the collection pose transformation relationship corresponding to each frame of image, the visual positioning result, determined according to the image optimization result, of theimage sensor is more accurate, the problem that the visual positioning results corresponding to a plurality of frames of images collected at the same position are large in difference is solved, and the situation that the positioning results at the same position are unstable is avoided.

The invention relates to a method and a device capable of effectively reducing SiC single crystal defects, belongs to the field of crystal preparation, and aims to overcome the defect of low raw material utilization rate in the existing SiC preparation process. The device comprises a crucible, a seed crystal and a flow guide cover, the crucible comprises a crucible cover and a crucible main body, a raw material area is arranged in the crucible main body, the flow guide cover is installed on the inner wall of the crucible body through a boss and located above the raw material area, the seed crystal is fixed to the inner side of the crucible cover and located in an opening in the top of the flow guide cover, the raw material area is filled with a first silicon carbide raw material and a second silicon carbide raw material which are different in particle size, the first silicon carbide raw material and the second silicon carbide raw material are separated by an annular graphite filter screen, the first silicon carbide raw material is positioned inside the annular graphite filter screen, and the second silicon carbide raw material is positioned on the periphery of the annular graphite filter screen; and graphite flakes are arranged on the outer side of the flow guide cover and are adhered to the inner walls of the crucible main body and the crucible cover. The raw material utilization rate is improved by filling silicon carbide raw materials with different pore diameters.

The invention relates to the technical field of mixed control, and particularly discloses a mixed control method of a mechanical arm. The mixed control method comprises the steps that the contact force between the executing end of the mechanical arm and a workpiece to be machined is acquired; whether the contact force is larger than a switching threshold value or not is judged; if the contact force is larger than the switching threshold value, a first control signal is output to a force controller, wherein the force controller is used for achieving force control over the executing end of the mechanical arm according to the first control signal; and if the contact is equal to the switching threshold value, a second control signal is output to a position controller, wherein the position controller is used for keeping current position control over the executing end of the mechanical arm according to the second control signal. The invention further discloses a mixed control device and system of the mechanical arm. According to the mixed control method of the mechanical arm, the problem of unstable operation in the prior art can be effectively solved, and the advantages of being preventing trembling of the mechanical arm and prolonging the service life of the mechanical arm are achieved.

The invention relates to a running vehicle body which arranges a cutting notch into which a left-right central portion of a relay connecting rod component on a piston rod, and arranges a connection shaft connected with the piston rod and upper and lower directions of the relay connecting rod component; the piston rod communicated with the connection shaft or the relay connecting rod component is provided with a first hole with the diameter of aperture being larger than the diameter of the connection shaft; the relay connecting rod component is provided with a front face that left and right two end parts at bottom surface of the cutting notch contact with the front side of the relay connecting rod component and move backwards along with the backward movement of the bottom surface; the relay connecting rod component is also provided with left and right connection parts which enable the left and right connecting rod to communicate between the left and right two ends of the relay connecting rod component; the left and right connection parts of the left and right connecting rods that are communicated respectively are provided with second holes with the diameter of aperture being larger than the diameter of the connection shaft; left-right compression springs are respectively provided between the left and right connection parts as well as at left and right fixing fixtures of the rear end part of the left and right connecting rods.

The invention discloses a knitting fabric drying machine, which comprises a work table, wherein a fixing rod, a protection box and a fixing plate are sequentially and fixedly connected onto the top of the work table from left side to right side; a support plate is fixedly connected onto the bottom of an inner cavity of the work table; fans are fixedly connected to the two sides of the top of the support plate. Through the arrangement and the matched use of the support plate, a first heat conduction plate, the fan, a support post, a fixing block, the fixing rod, fan blades, a first rolling tube, a first motor, a fabric, a second heat conduction plate, an air outlet, a second rolling tube, a second motor, the fixing plate, a guide wheel, a rotating shaft, a heating machine, a heat transfer rod and a third heat conduction plate, the knitting cleaned fabric is effectively dried; the problem of drapes generated by the fabric in the transportation and storage process when the existing knitting drying machine is used is solved, so that the production efficiency of the knitting fabric is improved; meanwhile, the practical performance of the drying machine is also improved; the knitting fabric drying machine is suitable for being popularized and used.

The invention discloses a method and a device for realizing automatic gain control (AGC). The method comprises the steps that after a mobile terminal receives a downlink signal, whether the received downlink signal is a burst signal or not is judged, if so, a latest correct automatic gain control value is used for controlling a gain amplification device to amplify gain when a next cycle comes, and if not, an automatic gain control value which is obtained through calculation is used as a correct automatic gain control value, and is used for controlling the gain amplification device to amplify the gain when the next cycle comes. By judging the burst signal to determine the proper automatic gain control value, the situation that the AGC value is unstable caused by the burst signal is avoided and the receiving performance of a mobile terminal receiver is optimized.

The invention discloses a multi-channel single-protein magnetic tweezer measurement and control method and system, the method comprises the steps of: first preparing a protein sample, identifying a plurality of microbeads to be tracked in a field of view by automatic detection or manual intervention, and simultaneously selecting an appropriate reference microbead; then controlling lifting and rotation of a magnet by a motor to control the sizes of stress and torque of the microbeads in the sample, performing real-time display after correction, measuring the three-dimensional coordinates of themulti-channel microbeads by a microbead positioning and tracking technology, displaying in real time the real-time change of the length of a protein fastening the microbeads through the waveform; storing the corrected real-time displayed sizes of the stress and the torque of the microbeads and the real-time displayed length of the protein, after the plurality of microbeads to be tracked in the field of view are completely collected and processed, changing to a next field of view of the sample, and repeating the above steps to measure the mechanical properties of the molecule of the protein. The method can realize simultaneous fast sampling of a plurality of research objects and realize high-throughput measurement.

The invention discloses an easy-to-pre-maintain LED (light-emitting diode) display screen module structure, comprising a module backboard, wherein the module backboard is fixed with an LED display screen box body, and a PCB (printed circuit board) is fixed on the front end surface of the module backboard; an LED lamp is arranged on the PCB; the easy-to-pre-maintain LED display screen module structure is characterized in that a plurality of accommodating spaces for accommodating magnetic fixing elements are formed in the module backboard; a groove which is used for clamping and limiting is formed in at least one wall surface of each accommodating space; the depth of each groove is 0.1-0.5mm; an insulating layer is also arranged between the module backboard and the PCB. The easy-to-pre-maintain LED display screen module structure has the advantages of being simple, stably fixed with the LED display screen box body, and convenient to install and dismantle.

The invention discloses a high-efficiency push-pull network connector, which comprises a first fixed seat and a second fixed seat, a connecting seat is installed on the inner right side of the first fixed seat, and a connecting seat is installed on the left side of the second fixed seat. There is a connecting head, a first connecting head is arranged under the inside of the connecting seat, and a second connecting head is arranged under the first connecting head, a latch is arranged on the left side of the connecting head, and the inside of the connecting head A second magnet ring is installed on the left side, movable blocks are arranged on the front and rear sides of the outside of the connecting seat, and connecting rods are arranged in the middle of the movable block and the connecting seat, and springs are installed inside the movable block. The high-efficiency push-pull network connector adopts a detachable installation method, which is convenient for users to replace the internal parts of the device, and the device is equipped with multiple fixing structures to ensure that the connecting seat and the connecting head will not appear during installation. activities, thereby preventing unstable network connections.

This oscillating axle (3) for a lifting device (1) comprises an axle bridge (5) at the ends of which are mounted two ground connection members (7), an oscillation axis (X3), a left jack (9) and a right jack (11), each jack (9, 11) having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed on a fixed part (13) of a chassis (2) of the lifting device (1), the body (92, 112) forming a chamber (94, 114) in which the rod (90, 110) moves. The axle comprises a hydraulic circuit (15) interconnecting the chambers (92, 112) of the left (9) and right (11) jacks, in which a fluid is present at a given pressure, making it possible to press the rods (90, 110) of the left jack (9) and of the right jack (11) against the bridge (5), and at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber (94) of the left jack (9), and at least one solenoid valve (154, 156) on a branch (15B) of the hydraulic circuit (15) connected to the chamber (114) of the right jack (11), wherein each of these solenoid valves (150, 152, 154, 156) may be positioned in an open position, in which fluid may flow freely, and a closed position, in which the fluid is trapped in the chamber (94, 114) of the corresponding jack (9, 11). Each of the chambers (94, 114) of the left jack (9) and of the right jack (11) has a pressure sensor (23, 25) designed to measure the pressure of the fluid in each of the chambers (94, 114). Control means (21) are provided to detect a pressure in one of the chambers (94, 114) that is greater than a first threshold, and/or a differential between the pressures in each of the chambers (94, 114) that is greater than a second threshold, so as to detect the blocking of a solenoid valve (150, 152, 154, 156) in the closed position, and to initiate a safety procedure.

The invention discloses a textile winding device with automatic leveling and cleaning functions, which comprises a support platform and a top plate, both sides of the top of the support platform are fixedly connected with support frames, and the tops of the two support frames are respectively connected to the two sides of the bottom of the top plate Fixed connection, the top of the top plate is fixedly connected with five return springs, the tops of the five return springs are fixedly connected with buffer seats, and the tops of the five buffer seats are fixedly connected with the bottom of the buffer table, the top of the buffer table, etc. There are five buffer columns fixedly connected at a distance, and brushes are fixedly connected to the tops of the five buffer columns. The textile winding device with automatic leveling and cleaning functions, by setting the cloth guide roller and the cloth take-up roller, the user can put the textile to be wound on the cloth guide roller, when the cloth guide roller and the cloth take-up roller rotate The textile will be rewinded. During the rewinding process, the outer surface of the textile can be automatically cleaned through the combined use of the buffer table, buffer column and brush.

The invention discloses an urban road pavement structure which comprises a drainage layer, a support layer, a foundation layer, a drainage degradation layer and a drainage cooling system. The supportlayer is directly paved on an urban road foundation and comprises a plurality of laminated metal perforated plates and gravel arranged between the metal perforated plates in a filling manner; the drainage layer is arranged below the support layer and is inserted into the urban road foundation; the foundation layer is arranged above the support layer and sinks along the middle portion of the uppersurface of a road in the length direction in an inclined downward manner, the longitudinal section of the foundation layer is in an isosceles trapezoid shape with the large upper portion and the smalllower portion; the drainage degradation layer is arranged above the foundation layer, and the upper surface of the drainage degradation layer is horizontal; and the drainage cooling system comprisesa heat exchange tube, a heat exchange main chamber, and a vertical tube, a pipe cap and a water storage tank; the middle portion of the upper portion of the water storage tank is provided with an opening, and the opening is opposite to the sinking position of the upper surface of the foundation layer. The pavement structure has good stability, has good water permeability and water storage performance and has high pavement high temperature deformation resistance.