204results about How to "Accurate location" patented technology

Method and apparatus for precise positioning of large structures

A three dimensional structure is precisely positioned at a desired location. A viral model of the structure of interest is created and stored in a computer memory. Some time later, remote sensors are placed in selected positions on the structure of interest. The sensors are configured so as to provide real time location, attitude and orientation information regarding the structure and may consist of GPS remote units, tilt meters, gyro compasses, and pressure sensor. The position of each the remote sensors on the actual structure is also recorded in the computer memory so that the virtual model accurately reflects the configuration of the structure. As the structure is being positioned, the real-time location, attitude and orientation information produced by the remote sensors is monitored at a base station and used to update the virtual model. In this way, the virtual model accurately reflects the current location, attitude and orientation of the structure. The information so obtained can be displayed to a user as a graphical and textual representation of the current state of the structure. The desired location, attitude and orientation of the structure is also displayed, thereby allowing a user to adjust the current location, attitude and orientation of the structure so as to align the current position of the structure to desired position. As built reports are produced upon completion of the positioning operation.

Method and device for positioning interference source

The invention discloses a method and device for positioning an interference source, and the method and device provided by the invention are used for solving the problems of low accuracy and poor accuracy in positioning the interference source in the prior art. The method comprises: determining an angle of wave approach corresponding to an interference signal collected by each collecting point, and determining the path routing of the interference source passing the collecting points; determining the attribute information of each interference signal in each collecting point; and determining theposition of the interference source according to the attribute information of each interference signal in each determinate collecting point and the determined path routing of the interference source.Because the interference signals with identical attribute information are possibly the interference signals generated by the same interference source, the intersecting point of the path routing determined by the angle of wave approach corresponding to the interference signals with the identical attribute information in the embodiment of the invention serves as the position of the interference source, thereby eliminating the interference caused by the refraction of the signal by buildings and the interference generated by overlapping between different interference source signals effectively, so that the determined position of the interference source is more accurate.

Multipoint infrared touch screen and touch positioning method thereof

The invention relates to a multipoint infrared touch screen. A plurality of infrared receiving units and infrared emission units are arranged on frames around the display surface of the multipoint infrared touch screen according to a certain sequence so as to form a vertically corresponding relation. The method for implementing the positioning of multipoint touch comprises the following steps of: starting the emission units on two opposite frames and finishing normalization of the receiving units; judging whether the touch screen generates touch deflection or not; switching the infrared emission units and three infrared receiving units corresponding to the emission units on in turn, and storing all values of a scanning receiving unit; reading a scanning value vertical to the scanning receiving unit, and comparing the scanning value with a normalized value; judging whether a touch point can be determined or not; further judging a possible touch point which is not accurately judged by using an infrared scanning record value which has a negative 45-degrees inclination angle; further judging uncertain individual touch points which are not accurately judged in the preceding step by using an infrared scanning record value which has a positive 45-degrees inclination angle; and finishing one scanning judgment cycle, and repeatedly starting a new cycle of multipoint touch judgment. The method has the advantages of uniform infrared coverage, clear inclination angle and no scanning dead angle.

Numerical control center sill combined drilling machine

The invention discloses a numerical control center sill combined drilling machine, which comprises a gantry main body, a lathe bed, side bases, conveying sticks, a fixture, a chip cleaner and a chip collecting box. The technical key points are that: two longitudinal ends of the lathe bed are fully symmetrically arranged; two longitudinal sides of the two-end gantry main body are provided with the side bases; each of the side bases is provided with a three-dimensional numerical control sliding table which is provided with a single spindle box; a longitudinal center line of the two-end gantry main body is uniformly provided with at least two conveying sticks; and each of the conveying sticks is at least provided with a connecting motor. The numerical control center sill combined drilling machine has the advantages of simple mechanical structure, rational configuration of processing elements and power and mechanisms, convenient production operation and maintenance, coordinate variable control scheme, improvement of equipment production flexibility, creation of favorable conditions for future production of various products, improvement of the pollution on field working environment due to hydraulic systems and cooling systems, aerosol cooling and chip cleaning, improvement of the pollution on the working environment, multipoint positioning and clamping, and guarantee of the reliability and the stability of machining precision.

Adjustable tray lifting device used for automatic stock bin

The invention relates to an adjustable tray lifting device used for an automatic stock bin. The adjustable tray lifting device mainly comprises a workpiece clamping mechanism, a tray positioning mechanism and a tray lifting mechanism. The workpiece clamping mechanism adopts a three-rod-guided adjustable tray clamping technology. The tray positioning mechanism comprises needle bearing installation bases, needle bearings, an upper supporting base, a lower supporting base, a cylinder, an ejector head, a cylinder flange and a profiling block. The tray lifting mechanism comprises bottom plates, ejector polished shafts, linear bearings, a polished shaft upper fixing plate, ball screw nuts, a polished shaft lower fixing plate, ball screws, motors, bearing blocks, angular contact ball bearings, deep groove ball bearings and proximity switch supports. The bottom plates, the polished shaft upper fixing plate and the proximity switch supports vertically installed on the bottom plates are fixed through bolts, and fixation relative to the bottom plates is maintained. The adjustable tray lifting device has the advantages that the problem that use functions are affected due to large workpiece accumulative errors is effectively solved, production cost is reduced, high-efficiency energy conservation is achieved, the positioning position is precise, and the application range is wide.

LED (light-emitting diode) intelligent illumination energy-saving control method based on Internet of things

The invention relates to an LED (light-emitting diode) intelligent illumination energy-saving control method based on Internet of things, wherein the control method comprises the following steps that: (1). a sensor installed on an LED intelligent terminal collects status information relevant to an LED lamp; (2) the sensor transmits the collected information to the LED intelligent terminal; (3) the LED intelligent terminal stores the received relevant information; (4) the LED intelligent terminal transmits the received relevant information to a central server through a communication control network; (5) after receiving the information, the central server identifies the information according to the set rule; (6) the central server determines whether to interfere with the received relevant information according to the concrete service type; (7) the central server sends an interference instruction to the LED intelligent terminal through the communication control network; and (8) the LED intelligent terminal processes the received interference instruction. The control method provided by the invention has the advantages of energy conservation, high management efficiency and the like.

MLE-PSO indoor positioning method based on RSSI (Received Signal Strength Indication)

The invention discloses an MLE-PSO indoor positioning method based on an RSSI (Received Signal Strength Indication). The method comprises the following steps: setting a plurality of base stations in an indoor environment, acquiring an RSSI value of each base station by a receiving terminal, and measuring a distance value between the receiving terminal and each base station; acquiring an estimated position by using maximum likelihood estimation, wherein each base station is corresponding to one estimated position, and determining a limited range by an area in which a plurality of estimated positions are located; initializing each parameter of a particle swarm optimization algorithm, and generating a particle swarm within the limited range at random; and an using the particle swarm optimization algorithm to calculate a global optimal solution of the particle swarm, in the particle swarm optimization algorithm, taking the above limited range as the limit, and selecting the most suitable global optimal solution as the estimated position output. The method of the invention obviously improves the indoor positioning accuracy, and meanwhile guarantees the computation speed of a positioning algorithm, the amount of data collection required for positioning, the number of iterations and other dynamic performances.

Circular-disc type precision drill seeding device of small-seed crops

The invention provides a circular-disc type precision drill seeding device of small-seed crops. The device comprises a bracket, a front roller, a rear roller, a plurality of seeding mechanisms and an engine, wherein each seeding mechanism comprises a sleeve, a seeding box for containing seeds and a seeding box case; a furrow opener is arranged at the lower end of each sleeve, and the upper end of each sleeve is fixedly connected with the corresponding seeding box case; a case opening penetrating through the sleeve is formed in each seeding box case; the bracket is further provided with fixed connecting rods for connecting the sleeves; each seeding box is of a round structure formed by a first sector-shaped seeding disc and a second sector-shaped seeding disc, which are in butt joint; seed discharging holes are formed in the outer peripheries of the first sector-shaped seeding discs; one side face of each first sector-shaped seeding disc and one side face of each second sector-shaped seeding disc, which are arranged adjacently, are sealed; the other side faces, which are arranged adjacently, of each first sector-shaped seeding disc and each second sector-shaped seeding disc are communicated with each other; seeds passing through the seed discharging holes drop off from the case openings and fall into seed furrows opened by the furrow openers through the sleeves. When the device is used for seeding, the device does not slip and has a good compaction effect, and a precision seeding effect with less thinning is realized.
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