11results about How to "Improve recognition distance" patented technology

The utility model discloses a long-distance anti-metal biaxial 125kHz RFID access control antenna, including RFID reading coil, flexible soft magnetic film and metal layer, flexible soft magnetic film is provided on one side of RFID reading coil, metal layer is provided on one side of flexible soft magnetic film far away from RFID reading coil, RFID reading coil includes Y-axis coil and X-axis coil, the Y-axis coil and the X-axis coil are connected in parallel, and the X-axis coil and the Y-axis coil are connected in parallel. According to the RFID reading coil, the Y-axis coil and the X-axis coil form two axial magnetic fields in an orthogonal mode, the position adaptability of the RFID reading coil to a tag card is further improved, the coil Q value and self-inductance are optimized by optimizing the number of turns and the wire diameter, the magnetic field receiving and transmitting capacity is improved, long-distance recognition is achieved, and the RFID reading coil has the advantages of being simple in structure and convenient to use. The flexible soft magnetic film and the metal layer are additionally arranged on the back of the RFID reading coil, so that shielding of a backward magnetic field is achieved, and the recognition distance can be further increased.

The invention relates to a finger ring for a card. The finger ring for the card is provided with an integrated circuit element (IC chip) for control and a booster circuit module, a loop antenna; and a main body part which is formed in a ring shape and on which the control integrated circuit element and the loop antenna are mounted. The main body part is provided with: a slit formed by completely cutting a partial region of the main body part; an antenna slot; provided is a groove for an integrated circuit element. The loop antenna is mounted in a state of being wound along the antenna groove several times, the control integrated circuit element is mounted in the integrated circuit element groove, and a slit exposed in the main body, the antenna groove, and the integrated circuit element groove are filled with a curable epoxy resin. The booster circuit module is composed of a circuit having a predetermined capacitance that adjusts the operating frequency of the integrated circuit element depending on the shape and size of the main body part of the card ring.

The utility model discloses an electronic paper screen three-dimensional antenna radio frequency card in the technical field of radio frequency identification, which comprises a communication module, a data processor, an electronic paper screen, a radio frequency information read-write module, a radio frequency chip and a radio frequency antenna, and is characterized in that the data processor is connected with an intelligent terminal through the communication module and is used for acquiring a control signal of the intelligent terminal; the data processor is connected with the electronic paper screen through the electronic paper screen driver and is used for controlling the electronic paper screen to display images and texts; the data processor is also connected with the radio frequency chip through the radio frequency information read-write module and is used for modifying the storage content of the radio frequency chip; and the radio frequency chip is also connected with the radio frequency antenna. A traditional paper bill is replaced, user operation is facilitated, manufacturing efficiency is improved, operation cost is reduced, the identification distance can be increased, operation efficiency can be improved, the appearance is more attractive when the electronic bill is hung on luggage or worn on a human body, information identification cannot be affected, and operation errors are avoided.

The present application belongs to the technical field of automobile driving, and provides a heavy truck curve speed warning method and system, which can both: based on the vehicle map and the current location information of the vehicle, real-time acquire the road curvature radius at a preset distance S on the road ahead of the vehicle; real-time calculate the actual center of gravity height of the vehicle; real-time calculate the corresponding curve warning speed and curve warning distance of the vehicle based on the road curvature radius and the actual center of gravity height; based on the current vehicle speed, the preset distance S, and the corresponding curve warning speed and curve warning distance of the vehicle, the vehicle is warned of the curve speed and the curve warning distance. The present application is used to solve the problems of high cost, short recognition distance, and low precision of heavy truck alarm of the existing curve speed warning system.

The application provides an enhanced UHF antenna, which comprises an antenna substrate, a gap layer and a resonance substrate arranged in sequence; the resonance substrate is provided with a grounding metal layer on the side far from the antenna substrate, and is provided with a parallel microstrip resonance structure on the side close to the antenna substrate; the parallel microstrip resonance structure comprises three resonance frequency points in the UHF frequency band; the antenna substrate comprises an antenna network composed of a zigzag dipole and a resonance matching strip, and the corresponding impedance real part at 915 MHz is between 10 Ω and 20 Ω, and the impedance imaginary part is between 135 Ω and 155 Ω; the gap layer between the zigzag dipole and the parallel microstrip resonance structure is an air gap layer or a polystyrene foam plastic layer. The application also provides an RFID tag with platform fault tolerance optimization, which comprises the enhanced UHF antenna. The RFID tag of the application exhibits better characteristics in effective identification rate, identification efficiency and identification range.

The invention discloses a vehicle aided driving device and system based on image and radar monitoring, and relates to the technical field of vehicle aided driving, the vehicle aided driving device comprises a shell, the shell is installed at the front end of a vehicle, cameras are symmetrically arranged in the shell, the rear ends of the cameras are installed on a micro-motion structure, and the micro-motion structure is connected with the shell. The micro-motion structure is connected with the radar structure through a circuit, the radar structure is arranged in the middle of the shell, the inertia structure is arranged at the tail end of the radar structure, turning is sensed through the inertia swing rod, the camera is driven to move slightly, and the overlapped view actively shifts towards the inner side of the turning and is expanded. Equivalently, the system pays attention to the risk area in advance, the obstacle recognition distance can be increased, time is won for a braking or steering system, and the curve driving safety is improved.

The utility model discloses a vehicle identification device based on a microphone. The vehicle identification device comprises a base, a circuit board and an upper cover, the base comprises a bottom cover, a vibration enhancing film and a vibration enhancing film cover plate; the vibration enhancing membrane is obliquely placed between the bottom cover and the vibration enhancing membrane cover plate; the circuit board comprises a support plate and a circuit board body, and the support plate is provided with a hollow space for placing the circuit board body; the upper cover comprises a top cover, a sound signal filtering blade, an audio enhancement film cover plate, an audio enhancement film and an audio enhancement film supporting plate; the sound signal filtering blade is fixedly connected to the top cover, and the top cover is fixedly connected with the audio enhancement film cover plate; the audio enhancement film is placed between the audio enhancement film supporting plate and the audio enhancement film cover plate. According to the utility model, through the physical structure design of the vibration enhancing membrane, the counterweight and the audio enhancing membrane, the amplification of vibration signals and sound signals is realized by utilizing resonance, so that the recognition capability and the recognition distance of vehicle engine noise and tire noise are improved.

This application provides a method, apparatus, device, and storage medium for identifying a target object, relating to the field of video processing technology. The method includes: when identifying a target object, first acquiring video frame images of the target object captured by a vision device, and simultaneously detecting the position of the target object by a radar device; and based on the position of the target object, determining the target image region where the target object is located from the video frame images; based on the target image region, extracting a portion of the video frame images containing the target object; and then identifying the target object in the portion of the video frame images to obtain the identification result of the target object. Using the technical solution of this application, the accuracy of the identification result can be improved without being limited by computing power.

The invention provides a bar code detection and recognition method and device and electronic equipment, and is used for solving the problems that a traditional bar code recognition method is low in bar code recognition efficiency and low in detection success rate in a complex scene, and the method comprises the steps: obtaining the target format data of a preview image based on an image collector; inputting the target format data into a pre-trained barcode detection model to obtain a detection result; when the bar code exists in the detection result, obtaining a positioning image of the bar code according to the bar code position in the detection result, and obtaining a category identifier of the bar code from the detection result; and decoding the bar code according to the positioning image and the category identifier. Based on the method, the bar code detection and recognition success rate in a complex scene can be improved, and the bar code recognition efficiency and accuracy are improved.

The application provides an anti-metal clutter dual-port microsound identifier, comprising a microsound chip and a dual-polarized antenna; the dual-polarized antenna is connected to the microsound chip; a microsound chip receiving end and a microsound chip transmitting end are arranged on the microsound chip; the microsound chip comprises a plurality of one-way single-phase transducers; the one-way single-phase transducers comprise input end one-way single-phase transducers and output end one-way single-phase transducers; the input end one-way single-phase transducers are connected to the microsound chip receiving end; and the output end one-way single-phase transducers are connected to the microsound chip transmitting end. Through the input and output ports of the microsound chip and the dual-polarized antenna, polarization isolation of input and output is realized, and external noise is well suppressed, so that metal clutter such as multipath fading and far target clutter interference in an industrial environment can be effectively suppressed.

The application relates to a front vehicle lamp LED light strip structure, and relates to the field of vehicle lamps. The structure comprises a lamp cover shell, a lamp body and a light-transmitting lamp cover. The front end surface of the lamp cover shell is vertically fixed with an embedded frame box, a mounting cylinder is horizontally fixed on the rear end surface of the lamp cover shell, the inside of the lamp cover shell is horizontally provided with the lamp body, the lamp body comprises a lamp rod and a daytime lamp, the lamp rod is inserted and mounted in the inside mounting cylinder of the lamp cover shell, the front end surface of the lamp rod is horizontally fixed with a main lamp, the rear end surface of the lamp rod is electrically connected with a connecting terminal, a screw box is fixed through the front end surface of the lamp rod, the daytime lamp comprises a screw ring and an LED light strip assembly, the screw ring is screw-assembled in the screw box, the front end surface of the screw ring is embedded and fixed with the LED light strip assembly, the light-transmitting lamp cover is arranged on the front side of the lamp cover shell and embedded and mounted in the embedded frame box. The modular design of screw-assembled screw rings and elastic strip positioning realizes precise installation of LED daytime running lamps and completely fills the short board of daytime driving safety.