823results about How to "No error" patented technology

The invention discloses an RFID management system for site construction worker safety. The RFID management system comprises a pair of safety shoes, a safety helmet, a gate, a camera, a wireless router, an optical transmitter and receiver, an interchanger, a hand-held terminal, an intelligent terminal, a server, a PC and a television wall; the safety shoes, safety helmet, gate and hand-held terminal are connected in a wireless mode through an RFID mode; the hand-held terminal, intelligent terminal, gate and server are connected in a wireless mode; the interchanger, television wall, PC and server have communication connection; the camera is electrically connected with the wireless router and optical transmitter and receiver; the wireless router, optical transmitter and receiver and interchanger are electrically connected; the hand-held terminal comprises a violation information acquiring module, a violation processing module and a data updating module; the violation processing module is connected with the data updating module; the server comprises a management inquiry platform and a central service platform; the management inquiry platform is connected with the central service platform; the management inquiry platform comprises a verification module, a personnel registration module, an attendance inquiry module, a violation inquiry module and a user management module.

The invention discloses a method for calibrating verticality of a magnetic shaft of a three-shaft magnetic sensor. A three-dimensional magnetic field generator and a nonmagnetic rotary table are adopted, the three-dimensional magnetic field generator and the nonmagnetic rotary table are arranged at first; the magnetic sensor which needs to be calibrated is fixed on the rotary table; a large magnetic field ranging from top to bottom is generated by the magnetic field generator, so that a numeric value measured by the sensor is not zero; the zero position of the rotary table is marked, the angle values of three shafts of the rotary table are recorded, and three shafts of the rotary table are rotated, so that the outputs of a shaft m and a shaft n of the sensor are zero and the angle values of the three shafts of the rotary table are recorded; the three shafts of the rotary table are rotated again, so that the outputs of a shaft m and a shaft n of the sensor are zero and the angle values of the three shafts of the rotary table are recorded; transformation relation between each shaft m, n and p of a coordinate O and each shaft x3y3z3 of the coordinate O3 can be obtained by calculating multiple recorded angle values so as to obtain a calibration result. The method is simple and feasible, high in accuracy and small in errors.

The invention discloses a speed reducer testing equipment which is used for testing the return difference and the elastic constant of a speed reducer to be tested. The speed reducer testing equipment comprises a support platform, and a servo motor, an input rotating wheel, an output rotating wheel, load equipment and an angle sensor which are arranged on the support platform, wherein an output shaft of the servo motor is connected with one of a first side shaft and a second side shaft, which are opposite, of the input rotating wheel so as to drive the input rotating wheel to rotate around a first rotating shaft defined by the first side shaft or the second side shaft; the speed reducer to be tested and the angle sensor are respectively connected with a third side shaft and a fourth side shaft, which are opposite, of the output rotating wheel; the output rotating wheel is meshed with the input rotating wheel to further synchronously rotate around a second rotating shaft which is defined by the third side shaft or the fourth side shaft and parallel to the first rotating shaft; the angle sensor is used for obtaining a torque angle of the speed reducer to be tested. Due to the adoption of the mode, according to the speed reducer testing equipment disclosed by the invention, the angle measurement precision of the speed reducer to be tested is improved.

A corrective/ophthalmic lens comprising an impact lip extending from an anterior lens edge and a radial groove adjacent and parallel to the lens lip posterior surface, an eyewear system containing a corrective/ophthalmic lens and a method of making a lens is provided. The lens impact lip size is variable, determined by frame function and the degree of impact protection that is necessary. A posterior surface of the lens impact lip is beveled with a curvature that preferably substantially matches and coincides with the lens anterior curves, producing a lip with no corrective, low residual power effect or negative image effects. Due to the absence of image change and effects through the lens impact lip, in one aspect the present invention eliminates restrictions to the size of the impact lip.

An air float multi-dimension force sensor and a multi-dimension force measuring method are characterized in that the invention is provided with a rectangle hexahedron floating plate; each surface corresponding to the floating plate is respectively provided with a nozzle; each nozzle and the surface corresponding to the floating plate form a nozzle baffle type pressure sensor; the rectangle hexahedron floating plate is led to be fully suspended and floated by the pressure air sprayed out from each nozzle; a pressure signal of a bearing cavity of each nozzle is a detecting output signal. The method for measuring multi-dimension force has no coupling among dimensions, needs no complex decoupling procedure and can effectively improve measuring precision.

The present invention relates to an asphalt pavement automatic repair equipment for asphalt concrete roads, comprising a cutting device, a material conveying and rolling moving device, a crushing device and a grabbing device, and the cutting device is installed on the upper end of the conveying and rolling moving device On the front side of the conveyor, a crushing device is installed on the right side of the upper end of the material conveying rolling mobile device, and a grabbing device is installed on the upper left side of the material conveying rolling mobile device. The present invention can solve the problem that in the process of repairing the ground on the existing asphalt road, the waste materials are dug away manually and then grouted and rolled. There are deviations in the manual marking and cutting of the staff, and there are safety hazards at the same time. The construction personnel shatter the ground with the help of tools At the same time, the dead corner areas on the four sides cannot be completely shattered, and the surrounding small areas cannot be fully excavated. People use existing tools to grout the construction area and then use rolling props to roll the ground. The work is labor intensive and efficient. Low-level problems can realize the automatic repair function of asphalt pavement.

The invention discloses a pedestrian clothing color identification method based on digital image processing. The method comprises the steps that (1) a pedestrian detection method which combines an HOG feature description operator and a SVM classifier is used to acquire a pedestrian image; (2) a Sobel operator is used to detect the edge contour shape of a pedestrian to acquire an image to be searched; (3) a pedestrian contour shape template is produced and matches a corresponding region in the image to be searched to acquire upper and lower body images of the pedestrian; (4) a seed filling method is used to carry out communication region labeling on clothing colors of upper and lower body regions of the pedestrian; (5) color feature extraction is carried out on a color communication region; and (6) the SVM classifier is used to carry out color classification discrimination to acquire the clothing color of the pedestrian, and a final result is output. According to the invention, the identification accuracy of the clothing color of the pedestrian is improved; standardized dress in a dangerous region is ensured; and safety risks are eliminated.

The invention discloses a visual odometer realization method based on fusion of RGB and depth information. According to the existing visual odometer realization method, only environmental RGB information can be obtained based on a monocular or binocular camera and three-dimensional information of the environment can not be obtained directly, so that the application environment of the method is limited and the precision is high. Besides, an RGB-image-matching-based positioning method has characteristics of mature technology and fast processing speed; and a Depth-image-matching positioning method has the characteristic of high environment changing robustness. According to the invention, with combination of the advantages of the RGB-image-matching-based positioning method and the Depth-image-matching positioning method, an RGB-D sensor is used for obtaining RGB and Depth information of a scene simultaneously and a visual odometer realization method based on fusion of RGB and depth information is provided. Information of 2D and 3D modes is utilized reasonably; the dependence on the illumination condition by the visual system is broken; precision, robustness, and practicability of the speedometer system can be improved substantially; and the application time and space for the mobile robot can be expanded.

The invention provides a time domain analysis method for a transient response of lossy nonuinform multi-conductor transmission lines and aims to solve the problem that the coupling among the lossy nonuniform multi-conductor transmission lines interferes with the computation in the field of integrity of electronic circuit signals. The method comprises the following steps of: performing differential dispersion on space differential operators in an electric wave equation; and integrating time differential operators in the electrical wave equation by a trapezoidal integration method to ensure that the oscillation, which is caused by a central difference method, of a computed result can be eliminated effectively, voltage and current transient response waveforms of any point on the transmissionlines can be acquired; and the transient analysis of the transmission lines in a longer time period is effective, the waveforms can be analyzed in a longer duration without large errors, and the coupled transmission lines are not needed to be decoupled when a model of the transmission lines is built. By the method, the computational load is reduced, and the simulation efficiency is improved. The method can be used for analyzing the transient response of the lossy nonuinform multi-conductor transmission lines.

The invention discloses a micro capacitance measurement method and a special device. The device is provided with a sine wave voltage driving source, a current-limiting resistor, a preposed operational amplifier, a feedback resistor, a voltage follower, an amplifying unit, a reference signal generator, a multiplying unit, a low-pass filter, a selective switch and a detection processing unit. The precision and the resolution of the method are high to the micro capacitance measurement.

The invention discloses a ship behavior track recognition method. The method comprises the following steps of: obtaining a track of a ship according to a track parameter; carrying out region divisionon the current sea area in which the ship travels according to the geographic condition of the current sea area; dividing a sea area track section by using a corner method according to the divided seaarea, so as to obtain a plurality of ship sub-track fragment sets; carrying out error back propagation multilayer feed-forward network set clustering on the plurality of ship sub-track fragment sets,so as to obtain a typical ship behavior track mode; calculating a Hausdoff distance between a track of a to-be-recognized ship and the typical ship behavior track mode; setting a Hausdoff distance threshold value; and judging a behavior track mode of the to-be-recognized ship according to a comparison result between the Hausdoff distance and the Hausdoff distance threshold value, and if the Hausdoff distance is smaller than or equal to the Hausdoff distance threshold value, judging the behavior track mode of the ship as the typical ship behavior track mode. The method is capable of correctlyand rapidly judging behavior modes of ship tracks, avoiding the waste of offshore management resources and ensuring the personal and property safety of seamen.

The invention discloses a three-dimensional positioning and guiding device for penetrating a vertebral pedicle through skin. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin comprises a base, dip angle measuring devices and a measuring device supporting rod, wherein guiding grooves are arranged in length wise frame edges of the base, two dip angle measuring devices are matched on the measuring device supporting rod in a sliding mode, and an arc-shaped guiding groove is arranged in each dip angle measuring device. A bar-shaped hole is arranged in the measuring device supporting rod, a puncture needle guiding tube is in hinge joint with the dip angle measuring devices, and the puncture needle guiding tube penetrates through the bar-shaped hole. A guiding pin is arranged on the puncture needle guiding tube and is matched with the arc-shaped guiding grooves, marking needle fixing holes are arranged in the middle portion of the measuring device supporting rod, and two ends of the measuring device supporting rod are cylindrical segments. The measuring device supporting rod is matched with the guiding grooves in a sliding mode through sliding blocks, the cylindrical segments of the measuring device supporting rod extend out of the sliding blocks and are connected with a positioning rod, and the positioning rod is in the same plane with the measuring device supporting rod and the puncture needle guiding tube. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin is capable of three-dimensional positioning and guiding and shortening the operation time, high in efficiency, accurate in guiding and capable of improving the achievement ratio of operation.

The invention discloses an electroplastic incremental forming device for a plate and a working method thereof, and belongs to the field of metal processing. The device comprises a machine tool and a pulse power supply, wherein a plate clamping device is fixed on a workbench of the machine tool; a clamping block, an electric brush holder and a retainer are arranged on a main shaft of the machine tool; the clamping block is connected with a tool head used for processing the plate; the electric brush holder is L-shaped, one end of the electric brush holder is fixed on the main shaft, and the other end of the electric brush holder is connected with an electric brush used for being abutted against the clamping block; the retainer is U-shaped, one end of the retainer is fixed on the main shaft, and the other end of the retainer stretches to a place below the plate and is connected with a lower press head used for being abutted against the lower surface of the plate; the tool head faces the lower press head; and the two poles of the pulse power supply are connected with the electric brush and the lower press head respectively. The electroplastic incremental forming device for the plate disclosed by the invention is simple in structure, easy to control, and low in processing cost; the forming accuracy of the plate is high; and the forming limit and the forming quality of the plate are increased and improved.

The invention discloses a method used for obtaining the three-dimensional attitude of a carrier and based on horizon and polarized light. The method comprises: firstly, detecting the horizon by usinga foresight camera of a carrier, and reckoning the roll angle and the pitch angle of the carrier according to the position of the horizon in an image and the parameters of the camera; secondly, obtaining a sky polarization information image according to a polarization camera, extracting a polarization neutral point from the polarization degree image by using an ellipse fitting method, and establishing a carrier three dimensional attitude equation according to the transformational relation of the polarization neutral point between a camera coordinate system and a geographic coordinate system; and finally bringing the roll angle and the pitch angle obtained from horizon navigation to the three dimensional attitude equation to solve the course angle of the carrier, thereby obtaining the threedimensional attitude of the carrier. The method is full-autonomous and passive.

The invention discloses a low-power Bluetooth intelligent asset management apparatus with an identity recognition function. The apparatus comprises electronic tags, an APP loading body and a server, wherein the electronic tags actively send out signals used for the APP loading body to receive, and the single APP loading body receives the signals sent by the electronic tags at the same time; an APP loaded on the APP loading body performs asset check through identity authentication, system updating, data downloading, tag configuration, tag locating and asset management; and during asset management, tag broadcasts are scanned through a Bluetooth module of the APP loading body, then identification and classification processing is performed through a fast addressing algorithm, and the asset management and statistics are finished. The deficiencies of low asset management efficiency, poor timeliness and high error rate caused by existing electronic tag collision and environment interference are overcome; and the apparatus has the characteristics of real-time asset management, high efficiency, no errors, localizability, rechargeability, reusability and the like.

The invention relates to a horizontal well segmented temporary blockage fracturing method and belongs to the technical field of hydraulic fracturing of oil and gas field development. The method comprises the steps of: carrying out temporary blockage on a perforation of a horizontal well; forming a new crack around the temporary blocked perforation; and repeating the process above. The horizontal well segmented temporary blockage fracturing method achieves a segmented fracturing effect on a well section of a horizontal well and provides a more effective, rapider and more convenient mode for development of the horizontal well. Meanwhile, after a temporary blockage agent is degraded, a crack end port also can be supported so as to improve a fracturing success rate; the temporary blockage agent cannot be left in a shaft, meanwhile, has a very high degradation rate in fracturing fluid, and cannot generate pollution to the stratum, so that the transformation effect is greatly promoted.

To enable to display a scale indicative of a reference length on a screen of a display at an accurate length even when exchanging the lens in an image pickup apparatus to any lens.

In a case of mounting an exchange lens (4F, 4Z) to an image pickup apparatus main body (3) and displaying an image of an object picked up by an image sensor (2) and a scale (5) indicative of a reference length in juxtaposition on a screen of a display (6), a previously measured optical magnification or an actual magnification is outputted from optical magnification outputting means (8) provided to the exchange lens (4F, 4Z) is outputted, an actual magnification on the screen of the display (6) is calculated based on the optical magnification, the size for the image sensor and the screen size, and the size of the scale on the screen is set based on the actual magnification and the reference length of the scale by a scale setting means (17).

The invention relates to a steel pipe and section steel blanking production line. The production line includes a feed line, a discharge line, and a steel pipe and section steel processing device; the feed line includes a feed roller table, a hydraulic lifting roller table, and a steel pipe hydraulic pressure Lifting roller table, a steel scale is arranged on the feeding frame of the feeding roller table, a positioning block is provided at the zero point of the steel scale, and at least one set of feeding lines is provided on one side of the feeding roller table, and the feeding line It includes a sliding feeding device, a raw material conveying device and a raw material storage device; the discharge line is provided with a discharge roller table, a hydraulic lifting roller table and a steel pipe hydraulic lifting roller table, and one side of the discharge roller table is provided with at least one A group of blanking lines, the blanking line includes a sliding discharge device, a processed part delivery device and a processed part storage device The present invention is provided with a steel ruler on the material delivery frame, and a positioning block is arranged at the zero point of the steel ruler, and the cut material Standing on the zero point, the steel ruler on the transport rack can quickly determine the size of the material to be cut, accurate, fast, and error-free; the hydraulic lifting roller table of the steel pipe can be raised when cutting the steel pipe, and the steel pipe can rotate to achieve the purpose of cutting; The invented production line can cut both steel pipe and H steel, with simple, fast loading and unloading, and accurate cutting.