31results about How to "Accurately obtain location information" patented technology

The invention relates to a vision-based dynamic target tracking and positioning method for an unmanned aerial vehicle. According to the method, two cameras are utilized to collect the image of a monitoring area; by means of background dynamic update and target object extraction of the monitoring area, the three-dimensional point cloud of a visual angle area is generated through using a binocular recognition and positioning principle; and a target object is dynamically tracked on the basis of the target object extraction and the binocular recognition and positioning principle. According to thevision-based dynamic target tracking and positioning method for the unmanned aerial vehicle of the invention, visual ranging and target tracking are combined in the video monitoring field; the pixel coordinates of an image where the target is located are determined through target dynamic tracking; the three-dimensional point cloud is generated on the basis of the visual ranging; the target objectis locked, and the three-dimensional coordinates of the target object are determined; when the target object enters a warning area, a system can issue an alarm to achieve a real-time warning function;the captured position information of the target object provides a scientific basis for the actual operation of background staff.

The invention discloses a handset intelligent guide method and system based on the NFC technology, comprising a handset APP, a handset with NFC, NFC labels, and a server. The NFC labels are installed on each scenic spot sign in a scenic region to cover all scenic spots in the scenic region; the server stores guide voice packets and scenic spot ads of corresponding scenic spots for downloading by users; the handset with NFC and the NFC labels perform near field communication to obtain corresponding position information and start corresponding scenic spot voice guide service. The voice packets can be downloaded from the server through the network, and also can be downloaded at downloading points in a scenic region. The system can be applied to scenic regions, and meanwhile can be applied to venues with visiting demands. The method and system make up for the deficiency of artificial guide, are suitable for the development tendency of network times, and play a significant role in the tourist industry.

The invention discloses a fire detection search and rescue system and method based on millimeter waves. The system comprises an environment acquisition device, a millimeter wave detector, a wireless transmitter and a monitoring terminal. The environment acquisition device is used for sending the acquired environment information to the wireless transmitter; the millimeter wave detector is used forcarrying out all-weather scanning on the environment to be detected so as to obtain characteristics and position information of a life body in the environment to be detected, and sending the characteristics and the position information of the life body to the wireless transmitter; the wireless transmitter reports all the collected information to the monitoring terminal through millimeter waves sothat the monitoring terminal stores the characteristics and position information of the life body; the monitoring terminal searches and rescues the life body based on the change by continuously comparing the change of the life body characteristics and the position information detected by the millimeter waves before and when the fire occurs. According to the system, accurate technical support can be provided in case of a fire, so that firefighters can accurately and quickly rescue trapped persons.

The invention provides an automobile anti-theft system, consisting of an STM32F103VET6 microprocessor, an XN934 GPS receiver, a LORA transmission module, a pyroelectric infrared sensor, an ultrasonicsensor, an ADXL345 tilt acceleration sensor, a relay circuit, a voice module and a voltage stabilization power supply. The main functions of the system are: 1) many kinds of sensors are used to monitor the status of the vehicle in real time and transmit the information to the STM32F103VET6 microprocessor. The microprocessor judges whether the vehicle has illegal intrusion or not according to thesedata, and starts the voice alarm as soon as there is an abnormality, cuts off the vehicle power supply and notifies the vehicle owner; 2) The XN934 GPS receiver is placed outside the vehicle window to help obtain the position information of the vehicle accurately; 3) the LORA module is used to realize the long-distance wireless communication to inform the vehicle owner of the real-time status information and position information of the vehicle, so that the vehicle owner can realize the remote real-time grasp of the status of the vehicle.

A dynamic tracking and measurement positioning method for a target object, which uses two cameras to collect images of a monitoring area, dynamically updates the background of the monitoring area and extracts the target object, and uses the principle of binocular recognition and positioning to generate a three-dimensional point cloud of the viewing angle area; combined with the target object Extraction and binocular recognition positioning principle, dynamic tracking and positioning of target objects. The present invention combines visual ranging and target tracking in the field of video surveillance, determines the pixel coordinates of the image where the target is located through dynamic tracking of the target, combines the three-dimensional point cloud generated by visual ranging, locks the target object, and determines its three-dimensional coordinates. When the target object enters the warning area, the system can issue an alarm to achieve the purpose of real-time early warning; the captured position information of the target object provides a scientific basis for the actual manipulation of the background staff.

The invention provides an input object identification device and method, and a device with an RFID label. The input object identification device comprises an RFID card reader matrix which comprises a plurality of RFID card reader modules, and is configured to sense an input object provided with an RFID label so as to read the ID code of the input object; a touch panel located on the RFID card reader matrix, and configured to sense the input object; and a control module coupled to the touch panel and the RFID card reader matrix, and used for determining the position information of the input object. According to the invention, the combination and interaction between an object and a multimedia virtual scene can be realized.

The invention discloses a user position determination method of a smart home system, and electronic equipment. The method includes: if at least one intelligent electric appliance included in the smart home system detects user position recognition signals emitted by a position recognition device worn by a user, the intelligent electric appliance which recognizes the user position signals is regarded as a to-be-operated intelligent electric appliance; the position of the user is determined according to an area which the to-be-operated intelligent electric appliance is located in and the signal intensity of the user position signals; and the to-be-operated intelligent electric appliance is controlled to execute operation related to the position of the user. According to the method, the position information of the user can be accurately obtained, the intelligent electric appliance is conveniently controlled to execute the operation related to the position information of the user, the intelligent electric appliance is in more accordance with the user behavior, and the satisfaction degree for the users is improved.

The invention relates to the technical field of detection, and especially relates to an airfield pavement inspection method, system and platform, and a storage medium. Airport view field range point cloud data is formed by transmitting and receiving laser; clustering analysis is carried out on the point cloud data, and real-time spatial fusion is carried out according to clustering analysis data;and airfield pavement real condition information is generated. The real-time three-dimensional point cloud data of a flight area can be detected and generated in real time, pavement defects and foreign matters are intelligently screened out, the airport management personnel can be reminded of defects or foreign matter positions and detailed information of the defects or the foreign matter positions in real time after the positioning information is fused, and the operation personnel are guided to go to process, so the operation efficiency of the airport management personnel can be greatly improved; and the system has the advantages of being simple in structure, convenient to operate, low in cost and the like and can be widely applied to various airports.

The invention discloses a laser spot positioning method applied to security monitoring, and the method comprises the steps: enabling a laser spot to fall at the center of a video image through adjusting a mounting distance, determining the physical position of laser equipment, fixing the physical position, and obtaining a first laser spot image; enabling the laser spot to deviate from the center of the video picture through calibration laser equipment, and obtaining a calibration distance and a second laser spot image; determining a pixel deviation value according to the first laser spot image and the second laser spot image; determining a horizontal pixel compensation coefficient kx and a vertical direction compensation coefficient of a to-be-measured laser spot through the mounting distance and the laser ranging distance D3, and further obtaining spot coordinates of the to-be-measured laser spot on the video picture under the condition of one magnification; converting the spot coordinate into a horizontal direction angle and a vertical direction angle of a camera corresponding to the to-be-measured laser spot at one magnification; and according to the horizontal direction angle and the vertical direction angle, acquiring a light spot coordinate of the to-be-measured laser spot on the video picture under any multiplying power. According to the invention, the position information of the laser spot in the video picture can be accurately obtained on the basis of existing video security and protection monitoring, the positioning precision of the laser spot is improved, and the automation degree of laser spot positioning is improved.

The invention discloses an RGB-D image salient target detection method. The method comprises the following steps: extracting RGB and Depth image features, simultaneously implementing fusion to form RGBD fusion features, and dividing the RGBD fusion features into high-level RGBD fusion features and low-level RGBD fusion features; enhancing the high-level RGBD fusion features by using three Transformers to form high-level RGBD enhanced features; performing three-stream decoding on the high-level RGBD enhanced features, and forming RGBD refined features by combining the high-level RGBD enhanced features with the low-level RGBD fusion features; and fusing the RGBD refined features to form a saliency map. According to the detection method, the high-level features are enhanced by utilizing Transformer, position information of a salient object is accurately obtained, the low-level features are fused by utilizing three-stream fusion, and contour details of the salient object are refined; and through combination of a convolutional neural network and Transformer, and global and local optimization, the saliency map with high precision is generated.

The invention discloses a method for acquiring the locations of vehicles, a device, a non-stop electronic toll collection method and a non-stop electronic toll collection system and belongs to the intelligent transportation field. The method for acquiring the locations of the vehicles comprises the following steps that: A, when a vehicle passes by an entering ground sensor, vehicle counts N are increased by 1; B, when the vehicle passes through a departure ground sensor, the vehicle counts N are decreased by 1; C, ground sensing block division is performed: one independent ground sensor having a vehicle existing state is adopted as one ground sensing block, or a plurality of adjacent ground sensors of which the states are continuous vehicle existing states are adopted as one ground sensing block, and the number of the ground sensing blocks is M; and D, ground sensing location information judgment is performed: when N is equal to M, the location of each ground sensing block is the ground sensing location information of a corresponding vehicle, wherein M and N are both integrals larger than or equal to 1. According to the method for acquiring the locations of the vehicles of the invention, one independent ground sensor having a vehicle existing state or a plurality of adjacent ground sensors of which the states are continuous vehicle existing states are adopted as one ground sensing block; and the locations of the vehicles in a lane can be obtained through the number of the vehicles and the number of the ground sensing blocks, and therefore, the location information of the vehicles can be obtained accurately.

The invention discloses an oil sprayer. When a needle valve 3 is in contact with an upper stop point contact surface 8 of the needle valve, a first conductive material A and a second conductive material B form a first conductive loop through the needle valve 3; and when the needle valve 3 is in contact with a lower stop point contact surface 9 of the needle valve, the first conductive material A and a third conductive material C form a second conductive loop through the needle valve 3. A conduction signal of the first conductive loop and the second conductive loop is detected, and position information of the needle valve 3 can be precisely obtained, so that oil spraying amount can be precisely controlled, and consistency and stability of oil spraying amount are realized, and therefore, CO2emission is reduced.

The invention relates to a high-reliability and low-false alarm rate highway automobile anti-collision system and method. The highway automobile anti-collision system comprises a central processing unit, radar, a steering wheel angle sensor, a vehicle speed sensor, a steering lamp sensor, a camera, a location speed measurement sensor and an output unit, wherein the radar communicates with the central processing unit. The technical problem that the false alarm rate of a traditional radar automobile intelligent anti-collision system is high is solved by the highway automobile anti-collision system. According to the highway automobile anti-collision system, by utilizing the multi-sensor fusion technique, the advantages of all the sensors are fully exploited; the integrated information of people, vehicles and roads is provided, and therefore, false alarms caused by traffic signs, temporary passage vehicles, roadside buildings, curves, overtaking and platform bridges are reduced, unreal obstacles are eliminated, and the false alarm rate under the complicated environment is reduced.

The invention discloses a target detection method for quickly identifying aluminum combustion particles in a holographic image. The target detection method comprises the following steps: step 1, establishing a data set suitable for identifying the holographic image of the aluminum combustion particles; step 2, marking images of the training set and the verification set of the selected aluminum combustion particle holographic image; 3, selecting an aluminum combustion holographic image particle identification model and designing parameters; step 4, aluminum combustion hologram particle rapid identification; 5, obtaining the center position of the aluminum combustion particles; 6, extracting the particle size of the aluminum combustion particles; and utilizing a YOLOv 3 model to realize rapid identification of the micron-sized aluminum combustion particles in the holographic image, and obtaining particle information of the aluminum particles.

The embodiment of the present disclosure discloses a method for preparing a test sample. The method includes: providing a structure to be treated including a failure area; wherein, the structure to be treated includes: multi-level steps, a dielectric layer covering the steps, a A contact plug and a virtual channel column running through the step; along a preset direction intersecting the slope where the multi-level step is located, the structure to be treated is thinned toward the step to form a pre-treated sample; wherein, The pretreated sample includes the failure area; along the preset direction, the thickness of the contact plug remaining on the surface of the pretreated sample is greater than or equal to a first preset thickness; removing the residue on the surface of the pretreated sample the dielectric layer to expose the dummy channel pillars to form the test sample.

The invention relates to a compressor muffler and mounting support welding device. The compressor muffler and mounting support welding device comprises a welding position acquisition device, a first moving mechanism, a second moving mechanism, a first welding gun and a second welding gun, wherein the welding position acquisition device is used for acquiring first position information of a position where the sidewall of a compressor muffler contacts with a first side plate of the mounting support as well as second position information of a position where the sidewall of the compressor muffler contacts with a second side plate of the mounting support, the first moving mechanism is used for moving the first welding gun to the position where the sidewall of the compressor muffler contacts with the first side plate according to the first position information, and the second moving mechanism is used for moving the second welding gun to the position where the sidewall of the compressor muffler contacts with the second side plate according to the second position information. The compressor muffler and mounting support welding device can be used for welding the compressor muffler with the mounting support without manual holding of the welding guns, so that working efficiency can be improved, labor cost is reduced and working personnel can be protected from suffering from light pollution during welding.