30results about How to "Linear smooth" patented technology

The present invention relates to a method and system for preprocessing multi-road segment data of lane line crowdsourcing data. The method includes: step 1, according to the size of an axial coordinate of the shape points in a single lane line in the road segment data Sort; step 2, judge shape point p n Whether the difference between the direction of the point and the connection direction of the head and tail points exceeds the set threshold; yes, delete the point p n+1 , no, add 1 to n; among them, the shape point p n The direction of the shape point p n and shape point p n+1 The connection direction of the line; step 3, execute step 2 in a loop until the value of n is the total number of shape points, and perform linear fitting optimization on the shape points of each lane line respectively. Sorting the shape points in each lane line according to the collinear relationship between points, filtering out abnormal outliers, effectively preprocessing the lane line data collected by crowdsourcing collection vehicles, and improving the efficiency of subsequent optimization processing Effect and efficiency, in order to obtain high-precision lane line map data that meets the accuracy requirements.

This invention relate to an industry television cameral, which in detail is an industry television ball cameral integrated with visual picture and infrared alarming and remote moving control. It is characterized by the following: the cameral core is located in the perpendicular bisector of the main ball middle ring and together with its pitching rotation structure is located inside the main ball; there are located with the plug rolling connection by the middle ring right axis cover and left axis cover and right middle axis and left middle axis at the crossing point where the main ball middle ring both sides crosses along their diameter direction, wherein, its upper part is an electricity output brush formed by the conductive ring column in the center of the level box and conductive inner ring and outer ring; and its down part are the middle ring left axis hung outside the main ball and the conductive ring bridge rack of the semi-round arc.

The invention discloses a capping mechanism of an automatic capping machine, which comprises a main shaft. The main shaft is provided with a cam, a vacuum control device, a lifting part and a cap suction part in sequence from top to bottom; The top of the part rotates along the cam groove on the cam, and the bottom is provided with a capping head, and the capping head can suck and press the cap on the cap suction part through the rotation of the lifting part along the cam groove and the vacuum control device; the vacuum control device includes Vacuum connection plate, vacuum turntable, vacuum device; an annular gap is left between the vacuum connection plate and the vacuum turntable, and the annular gap is divided into a ventilation area and an airless area by a partition rib; The corresponding second gas joint is transferred to the ventilation area, and when the lifting part completes the capping, the corresponding second gas joint on the vacuum connecting plate is transferred to the airless area. The capping mechanism in the present invention has a high degree of automation, a high safety factor, and saves labor costs.

The invention discloses an on-site horizontal splicing method of a steel tube arch, which adopts horizontal splicing in the form of '3+1' to meet the requirements of the alignment and can be processedand manufactured normally. The method adopts a mode of drawing a ground sample and then hanging a vertical line to lead the wire to be centered and aligned, is convenient and practical, and ensures horizontal splicing precision and linear smoothness. An inner flange is adopted to connect the two arch rib sections, the connection precision is high, the adjusting speed is high when a steel beam iserected in the later period, and the safety of the inner flange is high. The arrangement of a pre-arch degree is considered during horizontal splicing, so that the problem that the linear change caused by the pre-arch degree in the erection process cannot accurately align an inner flange bolt is avoided, and unnecessary trouble is caused. The on-site horizontal splicing method of the steel tube arch adopts the mode of steel component processing and on-site assembly separation, and is convenient for management and error prevention by batch entry and batch acceptance. The middle part is welded first, and then the two sides are welded to prevent stress concentration. After the arch rib is welded, welding the inner flange and the arch rib which are connected by bolts in advance; the deformation caused by the shrinkage of a welding seam cannot be prevented so that the inner flange cannot be accurately aligned.

The invention discloses a stentless urban bride anti-collision guardrail construction method, which is characterized in that a self-driven gun carrier back transportation template and a self-driven cradle vehicle are used for hoisting a anti-collision guardrail template, and an inner side template is used for hoisting an outer side template, so that the stentless construction is realized; the outer side template is hung and reinforced by a triangular support on the inner side template, the lower part of the outer side template is fixedly connected with an inner template through a counter-strain bolt, the straightness of the template is adjusted by utilizing a supporting rib and a basket bolt, the concrete is poured after the template is well adjusted, and a template cover is dismounted after the concrete strength meets the requirement so as to perform the moistening maintenance. Due to the adoption of the stentless urban bridge anti-collision guardrail construction method, the technical difficulties of the traditional support method that a support is previously arranged and the influence on the road traffic and the construction is large can be solved, not only can the working period be guaranteed, but also the normal construction and the traffic of the pavement road can be guaranteed, and the construction cost is also reduced; and the quality defects such as difficulty for installing and reinforcing the anti-collision rail steel template, easiness in template deviation and leakage, uncompactness for pouring the concrete, easiness for resulting in honeycomb, rough surface, bubbles, unattractive outline and the like can be solved.

The invention discloses a device and method for an Android system to call Qt drawing classes based on JNI multithreading, including: running the Android system, clearing the system memory, performing canvas initialization, activating the so dynamic library to prepare for calling Qt drawing classes, if the canvas If the initialization fails, the activation of the so dynamic library is carried out again; after the so dynamic library is successfully activated, the image data sampling thread and the SurfaceView drawing thread are started simultaneously under the environment of the first language; and the operation of executing the image data sampling thread is passed The drawing action MotionEvent event generates coordinate points, uses the Rect command to draw a rectangular frame according to the generated coordinate points, and loads the point coordinates float (x, y) to the so dynamic library, and the Qt drawing class according to the point coordinates float (x, y) Draw and execute the SurfaceView drawing thread at the same time, use the Android system's own SurfaceView to draw, and display the surface drawn by SurfaceView on the display. As a result, the drawing speed is significantly improved, and cross-platform calls are realized at the same time.

The steel box and basket arch bridge constructing process with 500-ton crane boat and full framing includes the following steps: determining the structural shape, rise-to-span ratio, arch rib toe-in angle and arch rib section form; installing the steel box girder support and midspan steel box girder; hoisting side arch and sidespan steel box girder and finally hoisting arch center. During the process, a total station meter and water level gages are adopted for overall process measurement, and jacks in longitudinal, transverse and vertical directions are utilized to locate the arch ribs and the steel box girder precisely, so as to ensure correct structural form and construction safety. At the same time, ANSYS program for calculating the installation profile and sensors for structure and stress control are also utilized. The constructing process is simple and easy to control, and the steel box and basket arch bridge has high typhoon resistance and high efficiency.