37results about How to "Solve difficult to locate" patented technology

The invention discloses an image recognition method of a beam splitter port line and a two-dimensional code label thereof, comprising three steps of: image acquisition, detection of the two-dimensional code label and positioning and recognition of the two-dimensional code. The invention intelligently identifies the two-dimensional code of the label on the image splitter and the port line and corresponds the code with the port, thereby performing effective management and intelligent processing of resources, and the manual identification record needs to scan and record each two-dimensional codeand correspond to the corresponding port, so that the problem of the tedious work of manual input is solved and only one picture can be taken by the mobile phone; through the depth learning algorithm,the problem that it is difficult to locate multiple two-dimensional codes in complex background is solved. The image is enhanced to solve the problem that the mobile phone cannot scan and recognize the two-dimensional code. The method solves the technical bottleneck of recognizing multiple two-dimensional codes in one picture.

The invention discloses a video flame detection method, device and system. The method comprises the following steps: extracting a flame suspected area in a video image; carrying out outline extraction processing and image segmentation processing on the flame suspected area to obtain a plurality of flame suspected small rectangular areas; and carrying out flame area extraction on the flame suspected small rectangular areas by the fluctuation characteristics of light stream and flame, and judging whether a video image has flames or not according to an extraction result. The method can obtain the flame suspected area by foreground segmentation and color information, utilizes the light stream to detect the motion characteristics of the flame, judges whether the area has the flame or not through the fluctuation situation of a flame angular point so as to overcome the defects of low video flame detection accuracy, high false alarm rate, high influence degree by noise and the like in the traditional flame detection technology, and solves the problems of poor flame characteristic extraction effect and difficulty in flame positioning in the prior art.

The invention discloses a white balance adjustment method of a display system and a display system. The white balance adjustment method comprises steps of operating a white balance test module integrated in the display system; reading a test special map stored in the display system using a white balance test unit for performing a white balance test, so as to adjust white balance parameters of the display system to be within a preset range; and updating and sending the adjusted white balance parameters to all signal input channels of the display system. The technical scheme of the invention is characterized in that testing is achieved through the white balance test unit integrated in the display system during white balance adjustment, so as to replace a test computer system; and the white balance test unit is used to directly control the map required in play for adjusting white balance, and a test special signal generator is replaced in map generation, so that the cost of white balance adjustment is reduced, and the stability of white balance adjustment is improved.

The invention provides a positioning system and a positioning method based on two-dimensional codes, a gyroscope and an accelerometer as well as an information service method. The system comprises two-dimensional codes, and further comprises a mobile phone with the gyroscope, the accelerometer and a camera therein and a system server, wherein a two-dimensional code mark which represents the position of a user is arranged on a main position of a user travelling path; the mobile phone camera of the user establishes image information catching connection with the two-dimensional code mark to shootthe two-dimensional codes to obtain main information position; the mobile phone gyroscope and the accelerator establish motion information catching connection with action of the user to capture a user motion direction and acceleration information; the user mobile phone establishes communication connection with the system server to send the obtained two-dimensional code position information as well as the user motion direction and the acceleration information caught by the gyroscope and the accelerometer to the system server; and a practical position and position map information sent to the mobile phone by the system server is received for the user to check.

The limiting device comprises a sheath tube assembly and a limiting support, the sheath tube assembly comprises an inner tube and an outer tube, the outer tube is arranged outside the inner tube in a sleeving mode and can axially move relative to the inner tube, the near end of the limiting support is connected with the inner tube, and a first part of the far end of the limiting support is turned outwards or bent outwards towards the near end of the limiting support in a natural state; the second part is expanded outwards in the radial direction, and the limiting bracket is accommodated in an accommodating space formed by the inner pipe and the outer pipe in an elastic deformation manner under the extrusion of the outer pipe. According to the limiting device, the primary septum and the secondary septum can be effectively prevented from shifting in the puncturing or suturing process, so that the accuracy after puncturing or suturing is effectively guaranteed, and the success rate of rehabilitation of a patient is increased. The invention further provides a suturing device.

The invention relates to a movable integrated curtain wall subframe. A curtain wall comprises an upright and glass; the subframe comprises a subframe male mullion and a subframe female mullion; the subframe male mullion is connected with the upright; the subframe female mullion is connected with the glass; the subframe male mullion is movably matched and connected with the subframe female mullion; and the subframe female mullion rotates by taking the subframe male mullion as a shaft. Compared with the prior art, the movable integrated curtain wall subframe has the advantages of simple structure, easiness for locating and installing the curtain wall at a corner and the like.

The invention discloses a d device for testing characteristics of junction surfaces between roll balls and roller paths. The device comprises the two less-half-cylindrical roller paths which are arranged in a perpendicular mode. The roll balls are arranged in the roller paths. The roller paths are arranged on test pieces. The test pieces are connected with a displacement sensor and a force sensor. The test pieces comprise an upper test piece and a lower test piece. The upper test piece and the lower test piece are both of a cylinder shape and are arranged coaxially. The two less-half-cylindrical roller paths are arranged in the middle position of the upper test piece and the middle position of the lower test piece respectively. The displacement sensor and the force sensor are connected with the upper test piece. According to the device for testing the characteristics of the junction surfaces between the roll balls and the roller paths, the two roller paths which are arranged in the perpendicular mode are used for restraining the movement of the roll balls, the problem that the roll balls are difficult to position in the testing process is solved, and therefore the characteristic data of the junction surfaces between the roll balls and the roller paths can be obtained. The device for testing the characteristics of the junction surfaces between the roll balls and the roller paths not only can provide a basis for the analysis of the characteristics of a junction part of guide rails, but also has significance in examining the correctness of a characteristic model of the junction surfaces between the roll balls and the roller paths.

The invention discloses a self-loading and unloading turnover box that comprises a turnover box body and a base, wherein the turnover box body is mounted on the base; the turnover box further comprises an expansion upper support arm, an expansion lower support arm, supporting leg shells and supporting leg guide columns; slideways are arranged at the upper end and the lower end of the turnover boxbody; the upper expansion support arm extends into the upper end slideway; the expansion lower support arm extends into the lower end slideway; a first driving mechanism is arranged between the expansion lower support arm and the lower end slideway; one end of the outer side of the expansion upper support arm and one end of the outer side of the expansion lower support arm are respectively connected with the supporting leg shells; the upper end of the supporting leg guide column extends into the supporting leg shell and is slidably connected with the supporting leg shell, and a second drivingmechanism is arranged between the supporting leg shell and the supporting leg guide column. Self loading and unloading of the turnover box body are achieved, the automation degree is high, the labor intensity is reduced, the structure is simple, and cost is low.

The embodiment of the disclosure discloses a method and device for predicting a target device, an electronic device and a storage medium. The method includes: acquiring a remote login log generated bya preset device in a network topology within a predetermined time period; extracting a preset feature attribute from the remote login log; processing the preset feature attribute by using a pre-trained device prediction model, and predicting whether the preset device is a target device in the network topology, wherein the target device is configured to manage multiple devices in the network topology. The method in the embodiment of the present disclosure can extract relevant features from a large number of remote login logs, and analyzes and processes the relevant features through the pre-trained device prediction model, and determines the target device having a control capability for other devices from a large number of devices.

The invention relates to an embedded license plate recognition system based on an ARM microprocessor. The system is composed of an upper computer and a control board integrated with an ARM microprocessor. The upper computer transplants a successfully compiled license plate recognition program into the control board; and the control board integrated with an ARM microprocessor is used for operatinga license plate recognition program, processing a collected license plate image, and identifying a license plate number. The license plate recognition program is implemented as follows: license platepositioning is carried out; to be specific, primary positioning is carried out by using an HSV color positioning method to obtain a candidate license plate area; license plate determination is carriedout; to be specific, a real license plate is determined by using an SVM license plate determination model and whether secondary positioning needs to be carried out on the real license plate is determined; character segmentation is carried out; to be specific, the license plate with the uniform size is segmented by using a vertical projection method to obtain license plate characters; and character recognition is carried out; to be specific, character recognition is carried out by using a Softmax multi-element logistic regression classifier to obtain a finally recognized license plate number.The embedded license plate recognition system has characteristics of small size, low cost and fast recognition.

A ground dynamic software and on-satellite software combined rapid simulation test method comprises the steps of initializing ground dynamic software according to an initial parameter, preset, of theground dynamic software; and substituting a hardware interface part in semi-physical real-time simulation by software to form the combined rapid simulation test method according to a design idea thathardware and software are decoupled to develop and debug and by combining the ground dynamic software and on-satellite software in semi-physical real-time simulation, and judging an output state of anon-satellite sensor, a state of an on-satellite execution mechanism and correctness of gesture, position and speed of a satellite. By the combined rapid simulation test method, the defects that the problem in semi-physical simulation is difficult to position, the debugging process is too complicated and test result interpretation is not comprehensive are overcome, and the comprehensiveness of thetest result interpretation, the debugging efficiency and the software development efficiency are improved.

The invention discloses a wireless sensor network distributed positioning method based on a Barzilai-Barwein gradient method, and the method is characterized in that the method comprises the followingsteps: 1) defining a network; 2) a node positioning problem in the WSN is classified as an unconstrained optimization problem; 3) reconstructing an unconstrained optimization problem, and further giving the unconstrained optimization problem in the sub-graph; 4) estimating the initial position of an unknown position node by using a maximum likelihood estimation method, and 5) iteratively solvingthe optimization problem by using a distributed method to obtain final positioning The method can solve the problem that the node is difficult to position in a large-scale wireless sensor network, andis high in positioning precision and low in calculation complexity.

The invention discloses an inclined hole cutting assembly. The inclined hole cutting assembly comprises a cutting head, a horizontal movement system and a vertical movement system. The horizontal movement system comprises a first shell. A first worm wheel and worm mechanism is arranged in the first shell, a worm wheel of the first worm wheel and worm mechanism is matched with a horizontal lead screw, and one end of the horizontal lead screw is connected with a numerical control machine tool. The vertical movement system comprises a second shell connected with the first shell. A second worm wheel and worm mechanism is arranged in the second shell, a worm wheel of the second worm wheel and worm mechanism is matched with a vertical lead screw, the lower end of the vertical lead screw is connected with a cylinder, a rotating shaft penetrates through the cylinder, one end of the rotating shaft stretches out of the cylinder, a clamping device is arranged at the stretching-out end of the rotating shaft, and the cutting head is clamped to the clamping device. The invention further provides a method for machining inclined holes through the inclined hole cutting assembly. A program set with the original cutting head of the numerical control machine tool as the reference can be directly utilized, cutting can be achieved by adjusting the position and angle of the assembly, positioning is accurate, the number of procedures is small, and machining efficiency is high.

The invention provides a method and device for locating a vulnerable node in a power grid, a storage medium and an electronic device, wherein the method comprises calculating the mutual impedance between each node in the power grid and a harmonic source node; obtaining the current amplitude value of each harmonic source; obtaining the harmonic voltage generated by each node in the power grid according to the current amplitude values and the mutual impedance; and determining a node corresponding to the maximum value of the harmonic voltage as the vulnerable node of the power grid. The method for locating the vulnerable node in the power grid takes account of the influence of each harmonic source on each node in the power grid, is beneficial to quickly searching out the node sensitive to theinfluence of harmonics in the power grid, has great significance for treating the harmonics, and solves the problem in the prior art that the vulnerable node in the power grid is difficult to locatewhen multiple harmonic sources function together.

The invention relates to a clamping device and a suturing device. The clamping device comprises a sheath tube assembly and a clamping assembly, wherein the sheath tube assembly comprises an inner tubeand an outer tube; the outer tube is arranged outside the inner tube in a sleeving manner and can axially move relative to the inner tube; the clamping assembly is connected with the far end of the inner tube or is arranged in the position, close to the far end, of the inner tube; the clamping assembly comprises a first clamping unit and a second clamping unit which are oppositely arranged; an included angle is formed between the first clamping unit and the second clamping unit; and the included angle can be adjusted. According to the suturing device, the clamping process of a secondary septum or a primary septum can be effectively completed, and follow-up operation is facilitated.

The invention discloses an inclined hole cutting assembly. The inclined hole cutting assembly comprises a cutting head, a horizontal movement system and a vertical movement system. The horizontal movement system comprises a first shell. A first worm wheel and worm mechanism is arranged in the first shell, a worm wheel of the first worm wheel and worm mechanism is matched with a horizontal lead screw, and one end of the horizontal lead screw is connected with a numerical control machine tool. The vertical movement system comprises a second shell connected with the first shell. A second worm wheel and worm mechanism is arranged in the second shell, a worm wheel of the second worm wheel and worm mechanism is matched with a vertical lead screw, the lower end of the vertical lead screw is connected with a cylinder, a rotating shaft penetrates through the cylinder, one end of the rotating shaft stretches out of the cylinder, a clamping device is arranged at the stretching-out end of the rotating shaft, and the cutting head is clamped to the clamping device. The invention further provides a method for machining inclined holes through the inclined hole cutting assembly. A program set with the original cutting head of the numerical control machine tool as the reference can be directly utilized, cutting can be achieved by adjusting the position and angle of the assembly, positioning is accurate, the number of procedures is small, and machining efficiency is high.

The invention discloses a nanorobot positioning system applied to magnetic nanorobots. The nanorobot positioning system comprises a magnetic fixing device, wherein the magnetic fixing device comprisesat least one pair of magnetic drawing parts and a package carrier used for carrying the magnetic drawing parts, wherein unlike magnetic poles of each pair of the magnetic drawing parts are distributed at two sides of the area of a nanorobot in an opposite way. According to the working principle, firstly, the nanorobot is delivered to a designated position by utilizing a nanorobot power system firstly; and then, the designated position is packaged by utilizing the package carrier with the magnetic drawing parts, and the unlike magnetic poles of the paired magnetic drawing parts are distributedon two sides of the nanorobot. According to the principle of unlike magnetic pole attraction of magnets, the magnetic nanorobot can be concentrated at the designated position to perform constant treatment and other operations by controlling the strength and angle of a magnetic field formed by the magnetic drawing parts. The scheme solves the problem of positioning difficulty of a nanorobot.

The invention discloses a positioning method and a positioning server suitable for indoor complex environments. The positioning method forms a positioning network through a plurality of positioning transmitting devices, obtains the first position coordinates and the list of initial positioning transmitting devices through the positioning network, and then passes the positioning The terminal obtains the user's PDR information to determine whether the user has moved. If not, it will re-judge whether the user has moved. If so, it will obtain the temporary transmitter list through the positioning network, and determine whether the temporary transmitter list and the initial positioning transmitter list are If there is a difference, if not, re-judgment whether the user has moved, if so, obtain the second position coordinates through the positioning network, and correct the second position coordinates through the PDR information to generate the third position coordinates. In the present invention, the positioning is carried out through a positioning network composed of several positioning transmitting devices, and the positioning terminal is used for correction, so as to solve the problem of difficult positioning in indoor complex environments.

The invention relates to the technical field of clamping seat profiles, in particular to a clamping seat profile capable of improving the mounting efficiency of an air opening. Comprising a clamping seat body, two positioning grooves, four clamping seat screw holes, two supporting frame screw holes, an injection molding clamping seat groove, two accessory grooves, two auxiliary plates, a plurality of first clamping grooves, two rotating rollers, two rotating cylinders, two binding belts, two auxiliary grooves, two mounting blocks, two connecting shafts, two mounting sleeves, two movable rods, two mounting shafts and two first protection plates. By arranging the clamping base screw hole, the supporting frame screw hole, the injection molding clamping base groove, the accessory groove and the positioning grooves, the injection molding clamping base groove is mainly used for being matched with an injection molding clamping base, detachable and slidable containing is achieved, and the positioning grooves in the two sides can be used for assisting in screw installation; the tuyere mounting and positioning function is improved, mounting is more convenient, and time and labor are saved.

The invention relates to the technical field of deep learning and image processing, in particular to a false film identification method for an industrial radiographic film. The false film identification method comprises the following steps: inputting a reference film and a film to be identified, firstly, respectively extracting weld joint areas of two negative films by using a Gaussian difference method twice, extracting five areas of interest which comprise a central point and are symmetrical about the central point of the weld joint from the weld joint areas, and carrying out pseudo-color processing on the areas of interest; secondly, sending the areas of interest subjected to pseudo-color processing into an improved twinning neural network for training and recognition to obtain numerical values after pairwise comparison; and finally, establishing a similarity judgment system, carrying out self-defined weight operation, and judging that the film is a false film if the weight is greater than a set threshold value. Experiments prove that the method can effectively distinguish the false films in the industrial films, the accuracy rate can reach 99.1% or above in 261 test set samples, and the method is simple and effective and has certain practical feasibility.

The embodiment of the invention discloses a patella tunnel positioning method used in a medial patellofemoral ligament reconstruction operation, which comprises the following steps of: in the medial patellofemoral ligament reconstruction operation, measuring a distance value between an upper pole and a lower pole of a patella through an auxiliary instrument with a distance scale mark, and according to the measured distance value between the upper pole and the lower pole of the patella, positioning a patella tunnel according to the distance value between the upper pole and the lower pole of the patella. Calculating and determining the middle upper 1 / 3 point of the inner side edge of the patella, marking the position of the middle upper 1 / 3 point of the inner side edge of the patella, determining the entrance of the patella tunnel by using the middle upper 1 / 3 point of the inner side edge of the patella through an auxiliary instrument with angle scale marks according to the marked position, and determining the exit of the patella tunnel on the surface of the patella by using a positioner according to the prepared patella equatorial included angle. After the patella tunnel direction and the entrance and exit position are confirmed, the patella tunnel is established through a drill bit in cooperation with an auxiliary instrument. The patella bone tunnel positioning device can accurately position the patella bone tunnel in an operation, the patella bone tunnel can be positioned through a minimally invasive incision, and the problems of bone tunnel deviation and the like are solved.

The test device for the characteristics of the joint surface of the ball and the raceway includes two semi-cylindrical raceways placed perpendicularly to each other, balls are placed in the raceway, the raceway is set on the test piece, and the test piece is connected to the displacement sensor and the force sensor. The test piece includes an upper test piece and a lower test piece. The upper and lower test pieces are cylindrical and coaxially arranged. Two less semi-cylindrical raceways are respectively arranged in the middle of the upper test piece and the lower test piece. The displacement sensor And the force sensor is connected with the upper test piece. The invention constrains the movement of the balls by placing the two raceways perpendicular to each other, which solves the problem that the balls are difficult to locate during the test, so that the characteristic data of the joint surface between the balls and the raceways can be obtained. The invention can not only provide a basis for analyzing the characteristics of the joint part of the guide rail, but also has important significance for evaluating the correctness of the characteristic model of the joint surface formed between the ball and the raceway.