41 results about "Uhf antennas" patented technology

The invention discloses an antenna size optimization method, an antenna and a household electrical appliance product, and the method comprises the steps: carrying out the multi-time iteration of a size parameter combination of an ultrahigh frequency antenna, and evaluating the performance of the antenna corresponding to the size parameter combination obtained through each iteration through a pre-trained performance estimation model, so as to screen out the optimal antenna size of the ultrahigh frequency antenna. Electromagnetic simulation software does not need to be used in the antenna size automatic optimization process, the computing power cost and the time cost in the antenna design process are effectively reduced, and the risk of insufficient memory is reduced.

The invention relates to the technical field of archive management, and discloses an RFID archive management positioning device which comprises a frame body, a layer plate, a controller, an electronic door lock, a touch operation screen, an RF read-write module, an ultrahigh frequency RF antenna, a position indicator light belt, universal wheels, a camera, a glass door and a sensing assembly. Wherein the shelf board is located in the rack body and used for placing file bags or file boxes, the ultrahigh frequency RF antennas are distributed at the positions perpendicular to the shelf board and parallel to the glass door, the position indicator light belt is installed on the shelf board, and the touch operation screen is installed on the glass door. According to the invention, accurate positioning in a high-density scene is realized through cross-type ultrahigh-frequency antenna layout and an optimized positioning algorithm, the algorithm eliminates environmental interference through RSSI signal strength normalization processing, reduces response time delay error through a multipoint sampling average value method, and combines a trilateration principle with multiple groups of antenna data, so that the positioning accuracy is improved. And the positioning error can be controlled within the range of + / -1 file.

The present disclosure provides, in various aspects, an ultrahigh frequency (UHF) antenna apparatus, an ultrahigh frequency (UHF) antenna assembly, a method of forming an ultrahigh frequency (UHF) antenna apparatus, and a support material supply. In a first aspect of the present disclosure, an ultrahigh frequency (UHF) antenna apparatus is provided that includes a radio frequency identification (RFID) chip and an antenna support having an antenna wiring pattern formed on a surface of the antenna support, and a UHF antenna loop electrically coupled with the RFID chip. The UHF antenna loop is configured to transmit and / or receive a frequency range in a UHF band, and includes a first loop portion formed by an antenna wiring pattern and a second loop portion at least partially extending to the outside of the antenna support.

The utility model discloses an ultrahigh frequency reader-writer integrating multiple functions, which relates to the technical field of ultrahigh frequency reader-writers, comprises a reader-writer and a plastic shell arranged on the surface of the reader-writer, and is characterized in that four radio frequency interfaces are arranged in the A direction of the plastic shell and are used for being connected with an ultrahigh frequency antenna according to actual requirements; an IO interface, a serial port and a USB interface amp are arranged in the B direction of the plastic shell. The ultrahigh frequency reader-writer integrating multiple functions has the advantages that the ultrahigh frequency reader-writer integrating multiple functions has multiple beneficial effects, so that the ultrahigh frequency reader-writer has high flexibility and reliability in practical application, firstly, the plastic shell is unique in design, four radio frequency interfaces are arranged in the A direction, and the ultrahigh frequency reader-writer can be connected with an ultrahigh frequency antenna according to needs; an IO interface, a serial port and a USB interface amp are respectively arranged in the B direction; according to the reader-writer, power supply communication is realized, and a communication mode can be selected through the dial switch, so that the reader-writer can adapt to different communication requirements, and the application range and the compatibility of the reader-writer are improved.

The utility model discloses a copper wire sewing thread antenna ultrahigh frequency clothes washing label which comprises label cloth, a double-ring type radio frequency resonant cavity assembly, an ultrahigh frequency antenna sewn by a copper wire sewing thread and a common sewing thread sewing thread, the label cloth comprises an upper layer and a lower layer, and the double-ring type radio frequency resonant cavity assembly is installed in the two layers of label cloth. The ultrahigh frequency antenna sewn by the copper wire sewing thread is sewn on the label cloth, the ultrahigh frequency antenna sewn by the copper wire sewing thread is used for being coupled with the double-ring type radio frequency resonant cavity assembly to form a radio frequency label with an antenna wing, and the common sewing thread sewing thread is sewn on the label cloth. The clothes washing label is low in raw material and manufacturing cost, rapid and stable in installation, beneficial to prolonging the service life of the clothes washing label, beneficial to popularization and application in the low-profit clothes washing industry and the low-profit linen industry, capable of promoting informatization management, reducing personnel and cost, increasing benefits and free of errors.

The present invention discloses a copper wire sewing line UHF antenna material and a method for making an UHF antenna with a sewing machine in the field of UHF radio frequency antenna technology. The copper wire sewing line UHF antenna includes a copper wire sewing line, which is formed by twisting bare copper wire and sewing line. The copper wire sewing line is sewn on a label cloth substrate to form a copper wire sewing line UHF antenna; the manufacturing method includes twisting the copper wire sewing line, determining the sewing type, determining the stitch track, stitch pitch, and sewing length of the sewing, and sewing copper on the label cloth substrate. The copper wire sewing line UHF antenna of the present invention has good electrical conductivity, small diameter, large tensile strength, and good softness. The high-speed sewing machine sews the UHF antenna on the cloth material, which has the advantages of water resistance, folding resistance, ironing resistance, and high manufacturing efficiency. The manufacturing cost is low, which is conducive to promoting the wide application of radio frequency technology in the footwear, clothing, and handbag industries, and improving the level of information management.

A dual-mode radio frequency identification (RFID) device is configured to have an integrated dual-mode RFID connection strip, the integrated dual-mode RFID connection strip including: an ultra-high frequency / high frequency (UHF / HF) dual-mode RFID chip, or a combination of an UHF RFID chip and an HF RFID chip. Both a high frequency (HF) antenna and an ultra-high frequency (UHF) antenna are coupled to the integrated dual-mode RFID connection strip, and the UHF antenna is formed by methods other than etching, such as cutting or printing operations, thereby reducing the cost of manufacturing the device. If a pair of chips is used, one of the chips in the pair can have a greater thickness than the other chip, allowing the thicker chip to be integrated into the device after the thinner chip, without requiring a minimum spacing between the two chips due to the size of the hot plate used to fix the chips. In addition, the first chip can be tested before the second chip is fixed, thereby limiting the cost of discarded devices.

The invention discloses an ultrahigh-frequency RFID ceiling type access door identification system, which comprises at least two ultrahigh-frequency RFID antennas, an ultrahigh-frequency RFID reader-writer and an access door management terminal, and is characterized in that the ultrahigh-frequency RFID antennas are used for reading data of tags, and the ultrahigh-frequency RFID reader-writer comprises a first behavior identification model and a second behavior identification model; the first behavior identification model is used for identifying whether the tag is static or dynamic according to data input by the ultrahigh frequency RFID reader-writer; and the second behavior identification model is used for further identifying the dynamic tag to obtain the access behavior of the dynamic tag. According to the invention, the in-out behavior of the ultrahigh-frequency RFID tag can be identified only through the tag movement identification algorithm module without depending on peripheral equipment such as an infrared sensor and the like, so that the hardware cost of the system is reduced.

The present invention relates to the technical field of ultra-high frequency radio frequency antennas. Disclosed are a copper wire sewing thread ultra-high frequency antenna material and a method for manufacturing an ultra-high frequency antenna by using a sewing machine. The copper wire sewing thread ultra-high frequency antenna comprises a copper wire sewing thread formed by twisting a bare copper wire and a sewing thread, and the copper wire sewing thread is sewn on a tag fabric substrate, so as to form the copper wire sewing thread ultra-high frequency antenna. The manufacturing method comprises the steps of performing twisting to form a copper wire sewing thread, determining a sewing type, determining a sewing stitch trajectory, a sewing stitch pitch and a sewing length, sewing the copper wire sewing thread onto a tag fabric substrate, etc. The copper wire sewing thread ultra-high frequency antenna of the present invention has good electrical conductivity, a small diameter, high tensile strength and good flexibility; the ultra-high frequency antenna is manufactured by means of a high-speed sewing machine on the basis of a fabric material, thus offering advantages of resistance to washing, resistance to folding and pressing, resistance to ironing, as well as high manufacturing efficiency; and the manufacturing cost thereof is low, facilitating wide application of radio frequency technology in the footware and apparel industry, linen industry and bag industry, thereby improving the level of information-based management.

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 invention relates to the technical field of radio frequency identification, and discloses a passive RFID number plate, an information sharing method, an information sharing system and a storage medium, the passive RFID number plate comprises a passive RFID tag, a power supply interface and a serial communication interface, so that external equipment can communicate with the number plate in a wired connection mode; the passive RFID tag comprises an RFID tag chip, an ultrahigh frequency (UHF) antenna working at the frequency of 920 MHz to 925 MHz and an NFC antenna working at the frequency of 13.56 MHz, wherein the UHF antenna and the NFC antenna are in communication connection with the RFID tag chip. The RFID tag chip is electrically connected with the power supply interface and the serial communication interface. The RFID tag chip is internally provided with a tag information area, a coding area, a security area and a user area, the user area comprises a plurality of user sub-areas, and each user sub-area is provided with an independent read password and an independent write password which are used for identifying access authority; efficient sharing of label information among different systems is realized, and different application scenes are adapted; and the landing of a digital and intelligent supervision mode of the whole life cycle of the electric bicycle is promoted.

In some embodiments, a radio frequency identification (RFID) system may include at least one Ultra High Frequency (UHF) antenna component, a conductive loop having a largest dimension that is smaller than the wavelength of radiation transmitted at a Microwave Frequency (MW). The conductive loop may define a gap and an RFID chip may be electrically coupled to the conductive loop. The conductive loop may be configured to be resonant at an Ultra High Frequency (UHF) and less resonant at Microwave Frequency (MW). The antenna component may be selected from the group consisting of a dipole antenna, a monopole antenna, a loop antenna, or a slot antenna.

A dual security tag including an RFID component and an electronic article surveillance (EAS) component, respectively disposed on opposite sides of a PET carrier substrate, is provided. The RFID component may include one or more ultra-high frequency antennae, such as a near field loop antenna and a far field dipole antenna, and an integrated circuit (IC) chip. The EAS component may be provided as an RF device, an acoustic-magnetic (AM) device, a low power Bluetooth (BLE) device, or other suitable device. The security tag may also include a facesheet affixed to the RFID component, a release liner layer affixed to the EAS device, and one or more intermediary films or protective layers. A method for manufacturing a dual security tag is also described.

A dual feed slot-based circularly polarized wideband ultra high frequency (UHF) antenna for a cubic shaped satellite (Cube-Sat) is described. The UHF antenna includes a circuit board, a metallic layer, a hexagonal meandered slot, a capacitor, a first feed horn, and a second feed horn. The circuit board has a front side and a back side separated by a dielectric material. The metallic layer covers the back side of the circuit board. The hexagonal meandered slot symmetrically includes six legs of equal length and six vertexes. The capacitor is switchably connected to the metallic layer. The first feed horn is connected by a first feed line to a first edge of the front side of the circuit board. The second feed horn is connected by a second feed line to a second edge of the front side of the circuit board.

The utility model relates to RFID anti-theft equipment which comprises a shell, an RFID antenna, an RFID reader-writer, a power module and a main control module. The shell is of a hollow structure and is of a flat body structure. The RFID antennas are ultrahigh frequency RFID antennas, the number of the RFID antennas is two or more, the RFID antennas are arranged in the shell, the multiple RFID antennas are arranged in the shell in the same direction, and the arrangement distance between the multiple RFID antennas is smaller than the thickness of the shell. The RFID antenna is in communication connection with the main control module; the RFID reader-writer is arranged in the shell, the RFID reader-writer is in communication connection with the RFID antenna, and the RFID reader-writer is in communication connection with the main control module; the RFID reader-writer and the main control module are both in communication connection with the power supply module. According to the RFID anti-theft device, the integrated design is adopted, it is guaranteed that the device can be conveniently assembled and installed in an integrated mode, the RFID anti-theft device can receive labels with weak RFID signals, and the requirements of users are met.

The invention provides a double-frequency electronic identifier, and aims to solve the problems that an existing identifier is unstable in performance, single in function and insufficient in safety in a complex environment, and metal and non-metal surface applications are difficult to consider at the same time. The dual-frequency chip is arranged on the substrate, and a high-frequency communication module, an ultrahigh-frequency communication module and a storage area for common access of the high-frequency communication module and the ultrahigh-frequency communication module are integrated in the dual-frequency chip; the high-frequency antenna is arranged on the substrate and is electrically connected with the high-frequency communication module of the dual-frequency chip; the ultrahigh frequency antenna is arranged on the substrate and is electrically connected with the ultrahigh frequency communication module of the dual-frequency chip; and the shell covers the substrate, the dual-frequency chip, the high-frequency antenna and the ultrahigh-frequency antenna.

A dual feed slot-based circularly polarized wideband ultra high frequency (UHF) antenna for a cubic shaped satellite (Cube-Sat) is described. The UHF antenna includes a circuit board, a metallic layer, a hexagonal meandered slot, a capacitor, a first feed horn, and a second feed horn. The circuit board has a front side and a back side separated by a dielectric material. The metallic layer covers the back side of the circuit board. The hexagonal meandered slot symmetrically includes six legs of equal length and six vertexes. The capacitor is switchably connected to the metallic layer. The first feed horn is connected by a first feed line to a first edge of the front side of the circuit board. The second feed horn is connected by a second feed line to a second edge of the front side of the circuit board.

The invention discloses a GIS partial discharge monitoring and early warning method and device based on multi-antenna cancellation and multi-mode fusion, and the method comprises the steps: collecting GIS partial discharge original signals through N groups of external ultrahigh frequency antennas, inhibiting multi-source interference through combining a noise template windowing translation method, and outputting pure partial discharge signals; the method comprises the following steps: synchronously acquiring multi-mode data of bus voltage and current, cleaning the data by adopting a sliding window + linear interpolation + 3 sigma criterion, and extracting time domain and frequency domain features; multi-modal features are fused based on an attention mechanism, a lightweight CNN-LSTM model is input to realize partial discharge trend prediction and grading early warning, and model precision is optimized through a cross entropy loss function; and transmitting an early warning result to a digital platform, and after early warning is triggered, carrying out iterative optimization on model parameters according to an on-site maintenance verification result. According to the method, the extraction rate of partial discharge signals in a complex electromagnetic environment can reach more than 90%, the processing delay is less than or equal to 1ms, the early warning accuracy is improved by 10% +, and the method is suitable for external monitoring of 500kV-1000kV extra-high voltage GIS equipment.

The utility model discloses a composite antenna with GPS and ultrahigh frequency, which comprises an antenna patch and an antenna carrier plate, and the antenna patch is attached to the antenna carrier plate. The antenna carrier plate comprises a tiled bottom plate and a vertical bottom plate, the antenna patch comprises a first branch, a second branch and an antenna connecting part, the second branch comprises a tiled section and a vertical tiled section, the first end of the first branch and the first end of the tiled section are both connected with the antenna connecting part, the second end of the tiled section is connected with the vertical tiled section, and the vertical tiled section is connected with the antenna connecting part. The first branch, the tiled section and the antenna connecting part are all attached to the tiled bottom plate, and the vertical tiled section is attached to the vertical bottom plate. According to the composite antenna with the GPS and the ultrahigh frequency provided by the utility model, through the bending and double-branch design, the part of the ultrahigh frequency antenna and the GPS antenna are arranged on the horizontal carrier plate, and the other part of the ultrahigh frequency antenna is arranged on the vertical carrier plate, so that the radiation of the GPS and ultrahigh frequency antenna performance is realized at the same time under the conditions of low clearance and small area.

The application relates to the technical field of file management, and discloses an RFID file management positioning device which comprises a frame body, a layer plate, a controller, an electronic door lock, a touch operation screen, an RF read-write module, an ultra-high frequency RF antenna, a position indicating lamp strip, a universal wheel, a camera, a glass door and a sensing assembly; the layer plate is arranged in the frame body and used for placing file bags or file boxes; the ultra-high frequency RF antenna is arranged at a position perpendicular to the layer plate and parallel to the glass door; the position indicating lamp strip is arranged on the layer plate; and the touch operation screen is arranged on the glass door. The application realizes accurate positioning in a high-density scene through a cross-type ultra-high frequency antenna layout and an optimized positioning algorithm; the algorithm eliminates environmental interference through RSSI signal strength normalization processing, reduces response time delay error through a multi-point sampling average value method, and combines the principle of trilateration with multi-group antenna data, so that the positioning error can be controlled within a range of 1 file.

The invention discloses an insulation partial discharge signal extraction method under high-frequency pulse voltage, and aims to solve the problem of interference superposition of high-frequency pulse voltage partial discharge and edge overshoot thereof in engineering practice. Building a partial discharge test platform under high-frequency pulse voltage, and collecting partial discharge signals through an ultrahigh-frequency antenna; secondly, reconstructing white noise according to energy distribution of the collected signals, determining the number of wavelet decomposition layers according to the energy ratio of the pure signals to the reconstructed white noise, and meanwhile, designing a multi-scale threshold function to remove signal noise; and finally, taking a signal from voltage zero crossing to voltage stability as a potential aliasing signal, judging whether edge overshoot aliasing exists in the signal by using a cross correlation coefficient, if not, directly eliminating the power supply interference, and otherwise, designing a high-pass filter according to a pulse edge to eliminate the edge overshoot interference. By means of the method, interference components in the insulation partial discharge signals under the high-frequency impulse voltage can be effectively removed, and data support is provided for further analysis of the insulation performance.

A Radio Frequency Identification (RFID) device is provided. The RFID device comprises: an ultra-high frequency (UHF) RFID chip; a dual mode strap comprising asymmetric coupling pads comprising a large coupling pad and a small coupling pad, wherein the large and small coupling pads are coupled to the UHF RFID chip, and wherein the large coupling pad is configured to support a first coupling area and a second coupling area; a UHF tuning loop conductively coupled to the dual mode strap; and a coil antenna configured to allow energy at HF frequencies to flow around, the coil antenna comprising a first coil end configured to couple with the large coupling pad and a second coil end configured to couple with the large coupling pad; wherein the first coupling area and the second coupling area are configured to be asymmetric to concentrate voltage at one of the coupling areas for de-activating a circuit by exposing the circuit to a high strength field at a resonant frequency of the circuit.

The utility model relates to the technical field of automation, in particular to a double-frequency book returning machine for a library, which comprises a frame body, an ultrahigh-frequency antenna and a double-frequency antenna box, a book returning channel is arranged in the frame body, a book returning opening is formed on one side of the frame body by the book returning channel, and the ultrahigh-frequency antenna and the double-frequency antenna box are arranged in the frame body. The book returning channel is provided with fluency strips on the other face opposite to the frame body, the ultrahigh frequency antenna is arranged on the top of the book returning channel, and the double-frequency antenna box is arranged at the bottom of the book returning channel. The ultrahigh-frequency antenna at the top and the ultrahigh-frequency antenna in the double-frequency antenna box at the bottom read ultrahigh-frequency tags of books at the same time, reading results are mutually verified, misreading caused by overflow of the ultrahigh-frequency antennas is reduced, meanwhile, the high-frequency antennas in the double-frequency antenna box read high-frequency RFID tags of the books, and the reading efficiency is improved. Therefore, the technical problem that in the prior art, a traditional book returning machine cannot identify high-frequency and ultrahigh-frequency label books at the same time is solved.

A dual feed slot-based circularly polarized wideband ultra high frequency (UHF) antenna for a cubic shaped satellite (Cube-Sat) is described. The UHF antenna includes a circuit board, a metallic layer, a hexagonal meandered slot, a capacitor, a first feed horn, and a second feed horn. The circuit board has a front side and a back side separated by a dielectric material. The metallic layer covers the back side of the circuit board. The hexagonal meandered slot symmetrically includes six legs of equal length and six vertexes. The capacitor is switchably connected to the metallic layer. The first feed horn is connected by a first feed line to a first edge of the front side of the circuit board. The second feed horn is connected by a second feed line to a second edge of the front side of the circuit board.

The utility model discloses an ultrahigh frequency RFID identification system, comprising a planar antenna array, a power division phase shift network and an ultrahigh frequency reader-writer module, the planar antenna array comprises a plurality of ultrahigh frequency antenna groups, and the plurality of ultrahigh frequency antenna groups are placed in a coplanar manner; and the power division phase shift network is respectively connected with the ultrahigh frequency antenna group and the ultrahigh frequency reader-writer module. The ultrahigh frequency antenna group comprises a plurality of linearly arranged antenna array elements and an independent feed structure, and the feed power ratio is 1: 1-8: 1. The planar antenna array is adopted to replace a traditional single-antenna system or a multi-antenna system, accurate control over the radiation boundary of the ultrahigh-frequency RFID recognition system and beam scanning in the specific direction are achieved through distribution of the feed amplitude and phase of the planar antenna array, and therefore the probability of serial reading and missed reading is reduced, and robustness in the RFID recognition process is improved.

The invention discloses an intelligent checking vehicle control system and checking method for a stereoscopic warehouse, and the system comprises a four-direction moving chassis, a data processing and transmission module, a power supply and battery management module, and an ultrahigh frequency RFID recognition system. The ultrahigh-frequency RFID identification system comprises an antenna array consisting of four groups of ultrahigh-frequency antennas of which the angles can be independently adjusted, and an RFID reader-writer connected with the antenna array; the four-way mobile chassis is in communication connection with a path planning and navigation module, and the path planning and navigation module plans a driving path for the four-way mobile chassis based on a pre-established warehouse digital twin model and sensor data; a charging contact of the autonomous charging module is arranged on the four-direction moving chassis; the data processing and transmission module is in communication connection with the ultrahigh frequency RFID identification system, the path planning and navigation module and the autonomous charging module; and the power supply and battery management module supplies power to the system. The problems that in the prior art, efficiency is low, recognition is limited, and algorithm adaptability is poor are solved.

The invention relates to the technical field of wireless communication, in particular to a multi-frequency multi-system fusion multi-port base station antenna which comprises a bottom plate, a low-frequency antenna array, two high-frequency antenna arrays and an ultrahigh-frequency antenna array are arranged on the bottom plate, the bottom plate comprises a left bottom plate and a right bottom plate, the two high-frequency antenna arrays are arranged on the left bottom plate, and the ultrahigh-frequency antenna array is arranged on the right bottom plate. One ultrahigh-frequency antenna array is arranged on the right bottom plate, one low-frequency antenna array is arranged between the two high-frequency antenna arrays and one ultrahigh-frequency array in a penetrating mode, the low-frequency oscillators are arranged on the two sides of the bottom plate in two rows, the two high-frequency antenna arrays are the first high-frequency antenna array and the second high-frequency antenna array respectively, and the two high-frequency antenna arrays are the first high-frequency antenna array and the second high-frequency antenna array respectively. The plurality of first high-frequency oscillators are divided into two rows and are adjacently arranged in the middle of the left bottom plate, and the plurality of second high-frequency oscillators are divided into two rows and are arranged on the two side edges of the left bottom plate. According to the base station antenna, more broadband frequency bands are fused, and the problems that a traditional base station antenna is small in frequency spectrum coverage range and low in communication capacity are solved.

The present invention discloses a dual-frequency one-time conversion anti-counterfeiting label and method based on a liquid metal circuit, comprising a first antenna layer, a flexible material isolation layer, and a second antenna layer arranged from top to bottom, an air through hole is arranged in the middle of the flexible material isolation layer, a protrusion is arranged at the bottom of the first antenna layer, and a receiving groove adapted to the protrusion is arranged on the upper surface of the second antenna layer, and the protrusion passes through the air through hole and is inserted into the receiving groove, and a non-joule magnetostrictive magnetic sheet is arranged at each end of the air through hole, and an RFID ultra-high frequency antenna made of liquid metal is arranged between the non-joule magnetostrictive magnetic sheet and the protrusion, and a circuit groove is arranged at the bottom of the receiving groove, and the shape of the circuit groove is adapted to the shape of the NFC high-frequency antenna, and the RFID ultra-high frequency antenna is connected to the dual-frequency module. The label of the present invention adopts liquid metal to make the antenna, and has a one-time conversion function of the dual-band antenna driven by a non-joule magnetostrictive magnet, so as to realize the multifunctional application of the label in different product periods.

The invention discloses an electric power passive wireless intelligent temperature data acquisition device which comprises an ultrahigh frequency antenna unit and a temperature monitoring fusion device host. The temperature monitoring fusion device host comprises an FR radio frequency module, a data processing module and a communication module, the ultrahigh frequency antenna unit receives temperature data in the form of electromagnetic waves, inputs the temperature data to the FR radio frequency module through a coaxial cable for data analysis, and finally stores the data in the data processing module. And the data is output to a system platform in a wired RS485 or wireless Lora form through the communication module. The device can adaptively adjust the working frequency point, the power and the working polling time of the device according to the parameters of the collected sensor data, realizes comprehensive adaptive working parameters, does not need subsequent manual adjustment and configuration, can simultaneously realize sensing of electromagnetic wave signals returned by a real-time temperature sensor of a measured object, reduces the installation cost of the device, and improves the reliability of the device. The production efficiency is improved.

The invention relates to a channel type read-write device supporting multi-protocol label mixed inventory and a control method, a main channel door and an auxiliary channel door of the device are oppositely arranged at an interval to form a passage channel for objects with labels, and the main channel door and the auxiliary channel door realize signal and data interaction through a cable; the main channel door comprises a control module, a read-write module, a first infrared sensor, an audible and visual alarm, a first group of ultrahigh frequency antennas and a power supply module, and the auxiliary channel door comprises a second infrared sensor, an audible and visual alarm and a second group of ultrahigh frequency antennas. The read-write module is a multi-protocol identification core and is composed of a protocol processing unit, an interface unit and a radio frequency unit. The control module comprises a processor and a multi-interface extension hardware circuit integrated with serial and network interfaces, and the problems of protocol incompatibility, data congestion, antenna interference, low module collaboration efficiency and the like of multi-protocol label checking are accurately solved through interface extension and time sequence coordination of a hardware level, efficient transmission of multi-protocol identification data and collaboration of modules of a main channel gate and an auxiliary channel gate.