44 results about "Reading distance" patented technology

The invention discloses an RFID-based intelligent warehouse management method and system, and the method comprises the steps: building an environment and article joint evaluation factor through collecting RFID tag data and information of articles and sensors in a warehouse, designing a frequency band adaptability scoring formula, and dynamically selecting an optimal working frequency band; and the transmitting power is dynamically adjusted in combination with the optimal frequency band, so that the minimization of the energy consumption of the RFID system and the reduction of the operation cost are realized on the premise of ensuring the identification accuracy and the reading distance, and the reliability and the intelligent level of the warehousing system are effectively improved.

The invention provides a reading remote mirror, which mainly comprises a front reflecting mirror, an upper reflecting mirror and a bracket, and is characterized in that the front reflecting mirror is obliquely arranged, the reflecting surface faces outwards and obliquely upwards and generally faces a reader, the upper reflecting mirror is arranged at a position generally right above the front reflecting mirror, the reflecting surface faces downwards, and the front reflecting mirror and the upper reflecting mirror are supported by the bracket. Diffuse reflection light of a book on the desktop is reflected upwards, is reflected to the front reflecting mirror which is obliquely placed below through the upper reflecting mirror, and is reflected to eyes of a reader through the front reflecting mirror which is obliquely placed below, so that the reading distance is increased to be more than 1 meter for long-distance reading.

The utility model discloses a label reads distance measuring device, including measuring box, a plurality of background board, clamping assembly and label fixed platform, and label fixed platform is located at the front end of measuring box, and the locating slot for label positioning installation is set up on label fixed platform, the lateral surface of measuring box is set up and forms a plurality of card embedding groove, and each background board is made of different material, and is installed in each card embedding groove respectively, clamping assembly includes spring and clamping block, and the bottom wall of each card embedding groove is set up and has the accommodation groove, and the spring is set up in the accommodation groove, and clamping block is under the action of spring and is worn to in the card embedding groove, and the one end of clamping block is set up as inclined plane to the outside of measuring box, and the bottom of each background board near card embedding groove end wall one side is set up and forms the limit slot, and clamping block can be embedded in the limit slot of background board bottom end. The utility model has the advantages of the measuring device when carrying out label reads distance measurement, need not to hold background board, and the manpower cost is smaller, and can ensure the accuracy of measurement data more.

The present invention discloses an RFID radio frequency anti-counterfeiting and tracing label with improved stability, comprising an adhesive separation layer and an elastic base layer with automatic recovery, wherein a first cavity and a second cavity are arranged in the elastic base layer, a gas transmission structure for connecting gas is arranged between the first cavity and the second cavity, a pop-up area is arranged on the surface of the elastic base layer close to the first cavity, an RFID radio frequency tag component is arranged on the pop-up area, and a pressing area is arranged on the surface of the elastic base layer close to the second cavity. The RFID radio frequency tag has high reading sensitivity and long reading distance. When not in a reading or writing state, the RFID radio frequency tag automatically retracts to reduce occupied area and reduce cost. When the RFID radio frequency tag needs to be read or written, it automatically pops up after operation, adheres to the metal surface of the product, reduces interference, and improves the stability of the RFID radio frequency tag during reading and writing.

The invention relates to a packaging (2) for a consumer product (1), the packaging (2) being provided with a first visible code (Q1), the first visible code (Q1) having associated therewith a first maximum reading distance (L1) of a camera (CA) and a first information density (D1), comprising a second visible code (Q2) having a second maximum reading distance (L2) of the camera (CA) and a second information density (D2), and wherein the first maximum distance (L1) is smaller than the second maximum distance (L2); and the first information density (D1) is greater than the second information density (D2). The invention also relates to a system comprising the packaging (2) and a camera (CA) and to a method for using the system.

The invention provides a glasses system for obtaining myopia causing factors and an orthokeratology glasses failure judgment method. The system comprises an environment spectrum sensor used for accurately obtaining environment light parameters and an electroencephalogram sensor used for obtaining user emotion change data. Acquiring data of the sensor module and generating environment parameters, activity parameters, electrophysiological parameters (electroencephalogram data) and eye parameters, judging whether the reading distance or the reading posture data meets a set early warning threshold value or not, if not, recording the reading distance and the posture data, and if yes, recording the reading distance and the posture data; and reminding the user to improve and record reading distance and posture data. According to the method and the system, whether the eyes of the user are really stimulated in the reading and environment can be accurately judged, and a doctor can conveniently and accurately judge the myopia causing factors of the user according to the environment parameters, the activity parameters, the electrophysiological parameters (electroencephalogram data), the eye using parameters and the vision data.

The invention relates to a determination system for determining information about the rotation of a component (1) about an axis (R) by means of a device comprising: an encoder (11, 12) carried by a body (50) rotationally connected to the component, the encoder having a track (11a, 12a) capable of emitting a periodic signal representative of the rotational displacement of the component; a sensor comprising a sensitive pattern (15, 16) arranged at a read distance from the track (11a, 12a) in order to communicate information that varies with the variation of the displacement; the determination system comprises: a housing (17) in which the component is rotatably mounted by a bearing (18) and is fixed in the housing (17); a module (19) on which the sensor is associated, the module (19) carrying a guide bearing (18); a spacer (26) for adjusting a reading distance (d) provided between the body (50) and the guide bearing (18).

The present invention relates to the field of electronic information technology, in particular to a data acquisition and analysis method for an RFID reading distance intelligent terminal. By introducing the variational mode decomposition technology, the radio frequency signal is decomposed into high-order IMF components containing the carrier fundamental frequency and low-frequency residual components reflecting the multipath effect, which can better separate the signal characteristics; combined with segmented windowing, Hilbert transform, and phase gradient analysis, the time-frequency characteristics of the phase mutation signal segment can be accurately extracted; finally, by constructing an evaluation model for the multipath interference suppression effect, a quantitative basis is provided for system optimization. The present invention analyzes the anti-interference ability of the RFID reading distance intelligent terminal, thereby providing technical support for the deployment and performance evaluation of RFID systems in complex environments.

This utility model belongs to the field of electronic tag technology and discloses an RFID electronic tag with an anti-tamper structure. It includes a brittle base, an antenna layer on the surface of the brittle base, a tag chip connected to the antenna layer, and multiple breakpoints with a width of 0.01m on the antenna layer. A top cover layer is provided on the surface of the antenna layer, and an adhesive layer for attaching to an object is provided at the bottom of the brittle base. The bottom of the top cover layer is coated with a fine and continuous conductive ink line to form a grid-like detection circuit. In this utility model, the detection circuit is weakly coupled to the antenna in the antenna layer, forming a parasitic capacitance. This causes a significant shift in the antenna's resonant frequency, preventing the energy emitted by the reader at its operating frequency from being effectively received by the tag antenna. This results in a sharp decrease in the tag's reading distance, or even complete unreadable data, thus achieving the anti-tamper function.

The invention relates to a method for testing the thickness of an RFID tag using a coupled antenna structure and application thereof, and the method comprises the following steps: 1), respectively arranging an ultrahigh-frequency antenna and a metal loop at the two sides of the thickness of a thickness test object, and forming the RFID tag of the coupled antenna structure; (2) an RFID reader-writer is adopted to transmit ultrahigh-frequency electromagnetic waves with specific frequency to read information of the RFID tag of the coupled antenna structure; 3) obtaining the maximum reading distance of the RFID tag of the coupled antenna structure under a specific frequency; 4) for thickness test objects which are made of the same material and have different thicknesses, respectively obtaining corresponding maximum reading distances; 5) acquiring a linear relation curve of the thickness of the thickness test object and the maximum reading distance of the RFID tag of the coupled antenna structure, and 6) acquiring the thickness of the thickness test object corresponding to the maximum reading distance measured by the RFID reader-writer from the linear relation curve in the step 5). According to the method, the RFID tag of the coupled antenna structure can play a role of a thickness measuring sensor.

The utility model relates to a radio frequency identification (RFID) distance reading testing device which comprises an RFID reader-writer, a pipeline, a plate and a label. The pipeline is formed by assembling short pipe units with shielding layers through connecting pieces, one end of the pipeline is provided with an RFID reader-writer, and the middle of the pipeline is provided with a limiting opening. The test plate is detachably mounted on the limiting part, and a multi-number label is arranged on the test plate. The device adopts a modular design and has the three advantages that the space utilization rate is high, the pipeline length is adjustable, and the device adapts to different test scenes; the closed structure effectively shields external interference and improves the test precision; and multi-label parallel testing is supported, and different label types can be quickly adapted by replacing the preset label plate. According to the device, test environment controllability, operation process standardization and equipment reuse high efficiency are realized, and the accuracy and efficiency of RFID equipment test are remarkably improved.

The utility model provides a fiber splice tray electronic tag, and belongs to the technical field of electronic tags. The problem that the transformation cost of an existing old net is high is solved. The fiber splice tray electronic tag comprises a port tag and a tail fiber tag matched with the port tag, the port tag / tail fiber tag is an FPC, and the FPC is provided with an electronic tag read-write interface used for reading information of the tail fiber tag / port tag matched with the port tag. The FPC is a flexible circuit board, so that the FPC can be conveniently connected with the tail fiber tag / port tag, the installation tolerance of the port tag and the tail fiber tag is expanded, and the adaptability is improved; the original 12 antennas are integrated on one FPC to serve as port tags, so that the area of the antennas is increased, and the reading distance is increased; an intelligent cover plate does not need to be customized, the structure of an original fiber splice tray is not changed, and the cost is reduced.

The application discloses an intelligent warehouse management method and system based on RFID, which comprises the following steps: collecting RFID tag data, article information and sensor information in a warehouse, establishing environment and article combined evaluation factors, designing a frequency band adaptability scoring formula, and dynamically selecting the best working frequency band; and combining the best frequency band to dynamically adjust the transmitting power, so that the RFID system minimizes energy consumption and reduces operation cost under the premise of ensuring identification accuracy and reading distance, and the reliability and intelligent level of the warehouse system are effectively improved.

A packaging for a consumer product is provided with: a first visible code, the first visible code being associated with a first maximum reading distance of a camera and a first information density; and a second visible code having a second maximum distance reading distance and a second information density. The first maximum distance is less than the second maximum distance, and the first information density is greater than the second information density. A system having the packaging and a camera and a method for using the system are also related.

The utility model relates to the technical field of measuring instruments, in particular to a distance measuring device for electric power engineering exploration, which comprises a rod body with adjustable telescopic length, the bottom of the rod body is provided with a measuring assembly for measuring distance by rolling on the ground, and the outer wall, close to the top, of the rod body is provided with a display assembly for reading distance measuring values; the measuring assembly comprises a connecting frame fixedly connected to the bottom of the rod body, the bottom of the connecting frame is movably connected with a movable seat, a photoelectric sensor is installed on the movable seat, and an installation shaft is fixedly arranged at the bottom of the movable seat. According to the distance measuring device for electric power engineering exploration, the number of rolling turns of the measuring wheel is calculated by utilizing the measuring wheel to roll on the ground and detecting the passing times of the marking groove through the photoelectric sensor, so that the passing distance of the measuring wheel is obtained, the distance measuring purpose is achieved, and the device has the advantages of being simple in structure, convenient to measure distance, easy to carry and the like. The method is suitable for various complex environments, and can quickly measure the distance.

The present invention discloses a step-missing safety device based on radio frequency identification technology, comprising: at least one RFID reader / writer, M passive RFID step tags, and a control system. The RFID reader / writer has a built-in antenna, and establishes a communication connection with the passive RFID step tags via the built-in antenna. The passive RFID step tags have preset step numbers, and the step numbers are different and have a preset sequence. The RFID reader / writer has a preset effective reading distance, within which the RFID reader / writer can simultaneously read the step numbers of N passive RFID step tags, where N is greater than or equal to 3. The control system determines whether an escalator or a sidewalk has a step-missing fault based on the number or sequence of the simultaneously read passive RFID step tags.

The utility model belongs to the technical field of pigeon foot rings, and provides a detachable pigeon foot ring, which comprises a foot ring body, an ultrahigh frequency label and a sizing material block, the end part of the foot ring body is provided with buckling parts which are matched with each other, and a groove is arranged between the buckling parts; the ultrahigh frequency tag is arranged in the groove; the rubber block is filled in the groove and limits the ultrahigh frequency label in the groove; the groove comprises a first positioning part and a second positioning part, the first positioning part is arranged at the bottom of the groove, and the second positioning part is arranged on the side wall of the groove. According to the utility model, the ultrahigh-frequency tag is used for replacing the existing low-frequency tag, so that the reading distance of the pigeon foot ring can be increased; secondly, the ultrahigh-frequency label is limited by the first positioning part, so that the label is prevented from being extruded and deformed by glue during glue filling, and reading of the label in the later period is not affected; and finally, the sizing material block is filled and cured between the second positioning parts and is matched with the second positioning parts for limiting, so that label separation caused by loosening of the sizing material block is avoided.

This utility model discloses a high-sensitivity, ultra-long-range RFID chip, comprising a PET substrate, an antenna, and a chip. The antenna, made of aluminum foil, is etched onto the PET substrate. The antenna includes a rectangular body with a hollowed-out radiating area in the middle. Below the radiating area is a feed port that isolates the antenna. A conductive adhesive layer is coated at the feed port. The chip, conductive adhesive layer, and feed port are fixedly connected by hot pressing. Symmetrical rectangular signal enhancement areas are located at both ends of the body. The signal enhancement areas are integrally formed with the body and located below the body. A long strip-shaped binding and positioning detection groove is located at the bottom of the body corresponding to the feed port. By adopting this solution, the original thick-wire bent antenna is adjusted to a planar antenna, which enhances the signal. At the same time, with the help of signal enhancement from the radiating area and the signal enhancement area, the sensitivity and reading distance of the RFID chip are improved, with a maximum reading distance of 8 to 10 meters.

The embodiment of the present application discloses a gesture recognition system, method and smart home device based on a one-dimensional TOF sensor. The gesture recognition system includes: a microcontroller and a one-dimensional TOF sensor. The one-dimensional TOF sensor measures the distance between the target hand and the one-dimensional TOF sensor in the target area once every preset time period, and the microcontroller reads the distance data of the one-dimensional TOF sensor; the microcontroller includes a timing module, a counting module and a signal generation module. The timing module calculates the waiting time between the latest distance data read and the next distance data read; the counting module counts the number of distance data in the sensor data group; the signal generation module determines the target gesture result input by the target hand according to the number of distance data and the corresponding distance data change characteristics. Through the above technical means, the technical shortcomings of infrared recognition technology such as short recognition distance and high power consumption are overcome.

The utility model discloses a posture correcting device with an adjustable reading gear, and relates to the technical field of sitting posture correcting appliances, the posture correcting device with the adjustable reading gear comprises a bearing plate, a reading frame and an adjusting assembly, the bearing plate is provided with a writing face arranged upwards, and the writing face is used for providing support for writing of a user; the reading frame is detachably arranged at the side end of the bearing plate in the first direction, and in the first direction, the mounting position of the reading frame relative to the bearing plate is adjustable and used for adjusting the distance between the reading frame and a user; the adjusting assembly is arranged between the reading frame and the bearing plate and used for adjusting the installation position of the reading frame. The mounting position of the reading frame on the bearing plate is adjustable, namely, the distance between the reading frame and a user is adjusted, the user can flexibly adjust the mounting position of the reading frame according to actual needs so as to adjust the reading distance, and the use flexibility is improved.

The invention relates to a system for determining rotation information of an organ (1) around an axis (R) by means of a device comprising an encoder (11, 12) carried by a body (50) fixed in rotation to said organ, said encoder having a track (11a, 12a) capable of emitting a periodic signal representative of the rotational displacement of said organ; a sensor comprising a sensitive pattern (15, 16) disposed at a reading distance (d) from the track (11a, 12a) to deliver the information as a function of said displacement; said system comprising a housing (17) in which said component is rotatably mounted by means of a bearing (18) and, fixed in the housing (17), a module (19) to which the sensor is attached, the guide bearing (18) being carried by the module (19), a spacer (26) for adjusting the reading distance (d) being disposed between the body (50) and the guide bearing (18). Figure 5

The present invention discloses an adaptive range control method and system for combined RFID and barcode reading. The method comprises the following steps: using an RFID reader to capture the backscattered signal of a tag in real time, extracting the carrier frequency offset, and calculating the real-time movement speed and direction of the tag based on the Doppler effect; predicting the first distance between the tag and the RFID reader and the second distance between the tag and the barcode scanner at the next moment based on the real-time movement speed and direction, combined with the fixed spatial coordinates of the RFID reader and the barcode scanner; obtaining the RFID effective reading radius and the barcode effective reading distance; and setting an adjustment strategy to adjust the reading mode based on the relationship between the first distance, the second distance, the RFID effective reading radius, and the barcode effective reading distance. The present invention can improve the dynamic adaptability, collaborative efficiency, and robustness in complex environments of combined tag reading.

The utility model discloses an intelligent label with multiple calibration points, which belongs to the technical field of intelligent labels and comprises a chip antenna conductive pattern module arranged on a first carrier insulating layer and an antenna conductive pattern module arranged on a second carrier insulating layer, and the first carrier insulating layer and the second carrier insulating layer are compounded into a whole. A central U-shaped antenna groove is formed in the middle of the antenna conductive pattern module, the chip antenna conductive pattern module is located in the central U-shaped antenna groove, and a feed port is formed in the middle of the upper end of the chip antenna conductive pattern module. Through the above mode, the novel design of 14 * 70mm is adopted, and three point positions are arranged, so that one electric small ring can adapt to three chips, the universality of the electric small ring is stronger, and compared with the previous design of the same size, the sensitivity of the intelligent tag is obviously and effectively improved, and the application range of the intelligent tag is widened. And meanwhile, the maximum reading distance of the intelligent tag is also obviously increased.

The utility model discloses a gem refractometer reading auxiliary support, which comprises a base, an angle adjusting sliding rail, a sliding assembly, a six-section type telescopic rod and a circular vision field support, the angle adjusting sliding rail is arranged on the base, the sliding assembly is connected to the angle adjusting sliding rail in a sliding mode, and the six-section type telescopic rod is arranged on the circular vision field support. One end of the six-section type telescopic rod is connected to the sliding assembly, the other end of the six-section type telescopic rod is connected with the round vision field support, the length of the six-section type telescopic rod in the contraction state is 6 cm, and the length of the six-section type telescopic rod can be increased by 6 cm when the six-section type telescopic rod stretches out each whole section; and when the six-section telescopic rod is parallel to the axis of the eyepiece of the gem refractometer, the distance from the circular vision field bracket to the eyepiece is 3.5 cm. By using the reading auxiliary bracket for the gem refractometer, the problems of inaccurate operation posture, reading orientation (angle) and reading distance can be solved.

The invention discloses a gate control method and device, a gate, a storage medium and a product. The method is applied to the integrated ticket checking gate machine, and the gate machine comprises a machine body with a radio frequency identification card reader and a ticket checking assembly, and a pair of gate plates; the machine body comprises a metal shell with a multipath reflection mechanism; an antenna assembly capable of transmitting carrier signals in the direction of a gate passing channel is integrated in each gate plate. The radio frequency identification card reader is used for identifying a worker certificate containing a radio frequency identification tag; the ticket checking assembly is used for checking audience bills and resident identity cards; the method comprises the following steps: acquiring a certificate identification result or a bill verification result; and controlling the pair of flashboards to open under the condition that the preset passing requirement is met according to the certificate identification result or the bill verification result. According to the invention, the reading distance of antenna signals is increased, signal crosstalk between adjacent gates is eliminated, ticket and certificate simultaneous inspection is realized, two kinds of equipment do not need to be deployed at the same time, and the personnel circulation efficiency is greatly improved.

According to the technical scheme, the myopia-preventing self-moving support is characterized in that the myopia-preventing self-moving support comprises a bottom frame, and the bottom frame is provided with a supporting piece used for fixing a screen / book; the distance measuring part is used for detecting the distance between the underframe and a user; the driving part is used for driving the chassis to move forwards and backwards; the controller controls the driving part to drive the underframe to move back and forth according to a signal of the distance measuring part; the distance between a user and a reading object can be monitored in real time, the position of the support can be automatically adjusted, it is ensured that the reading distance is moderate, the user does not need to manually adjust the position of the support, the correct reading habit of students can be cultivated, visual impairment caused by bad postures is reduced, and therefore myopia is effectively prevented.

The utility model relates to the technical field of electronic tags, in particular to a linear electronic tag for textile tracking and a preparation method of the linear electronic tag. According to the linear electronic tag, a linear metal wire is directly used as a far-field antenna to be integrated in cloth and is coupled with a near-field module; compared with the prior art, the high reading distance and performance can be achieved without improving the shape of the far-field antenna, the production efficiency is improved and the cost is reduced in the mode that the far-field antenna is cut and the coupling module is installed, the technology is more simplified, operation is easy, the method is suitable for large-scale stable production, and development of the field is greatly promoted.

The invention relates to a distance measuring wheel convenient for interpretation, which comprises a main body, a wheel body, a distance measuring assembly, an upper transmission group, a lower transmission group and a middle shaft assembly, the main body comprises a handle part and a wheel fork part, the wheel body is arranged on the wheel fork part, the distance measuring assembly is arranged on the handle part, the upper transmission group is connected with the distance measuring assembly and is provided with an upper connecting gear, and the lower transmission group is connected with the wheel body and is provided with a lower connecting gear. The middle shaft assembly comprises a middle shaft, an elastic piece, an upper joint piece and a lower joint piece, the middle shaft is connected with the upper joint piece and the lower joint piece to rotate synchronously, and the upper joint piece and the lower joint piece are meshed with the upper connecting gear and the lower connecting gear respectively. The elastic force of the elastic piece can push the upper joint piece and the lower joint piece to the upper connecting gear and the lower connecting gear respectively, so that the transmission stability is ensured, and a lower measurement error is maintained.

A package (2) for a consumer product (1) is disclosed, the package (2) being provided with: a first visible code (Q1) associated with a first maximum read distance (L1) of a camera (CA) and a first information density (D1); and a second visible code (Q2) having a second maximum read distance (L2) of the camera (CA) and a second information density (D2), where the first maximum distance (L1) is less than the second maximum distance (L2) and the first information density (D1) is greater than the second information density (D2). The invention also relates to a system comprising a package (2) and a camera (CA) and a method of using the system.

The present invention discloses a design method for an antenna for eye movement monitoring: step 1, determining the materials of the antenna base and the conductive layer; step 2, determining the basic structure of the antenna; the basic structure of the antenna includes the antenna base, the conductive layer and the RFID chip, and the RFID chip is connected to the conductive layer; step 3, selecting the size of the conductive layer; step 4, adding the radiation boundary and the port excitation; step 5, performing simulation to obtain the simulated impedance value; step 6, comparing the simulated impedance value with the design requirements, and entering step 9 when the error is within the required range; otherwise entering step 7; step 7, constructing fitness; step 8, optimizing the conductive layer using a particle swarm algorithm; step 9, making a physical object and testing the reading distance, and continuing iteration. The present invention uses the idea of ​​backscattering to detect eye movement through the change of the echo signal, reduces the invasiveness of antenna installation and solves the privacy and security issues under the premise of ensuring high-precision tracking of eye movement.