Chip RFID radio frequency identification device

Abstract

The utility model discloses a chip RFID (radio frequency identification) device, which relates to the technical field of radio frequency identification, solves the problem that long-distance radio frequency identification is not accurate enough, and comprises a transmitter, an antenna, a reader-writer, a hardware anti-jitter device, an RFID chip, a controller and a power supply device. The transmitter generates stable radio frequency signals through a voltage oscillation circuit of the radio frequency generator, the antenna achieves long-distance transmission of the radio frequency signals through the electronic tag antenna and the reader antenna, and the reader-writer achieves accurate reading of RFID tag data in wireless signals through a built-in radio frequency front-end chip, a DSP digital signal processing chip and a hardware anti-jitter device. The RFID identification chip accurately identifies a target object through the radio frequency front end receiver and the arithmetic logic decoder, the controller controls the chip RFID radio frequency identification device to operate orderly through the PLC control chip, stable radio frequency signals are provided, and remote chip RFID radio frequency identification is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency identification, and more specifically to a chip RFID radio frequency identification device. Background Art

[0002] The chip RFID radio frequency identification device is a wireless communication technology that can identify and track objects through non-contact, wireless transmission. The RFID radio frequency identification device consists of two parts: a reader and a tag. The reader is a device used to communicate with the tag, and the tag is attached to the object to be identified. The RFID radio frequency identification device can automatically identify and track objects through wireless radio frequency technology, and can effectively improve work efficiency and accuracy. Therefore, it has a wide range of applications in logistics, inventory management, production process tracking, and commercial fields.

[0003] In traditional chip RFID radio frequency identification devices, on the one hand, they cannot provide stable radio frequency signals, cannot identify target objects at a long distance, and cannot accurately read RFID tag data in wireless signals. On the other hand, they cannot process and parse RFID tag data to achieve accurate identification of target objects. There is a lack of orderly operation of the chip RFID radio frequency identification device. Therefore, the utility model proposes a chip RFID radio frequency identification device to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to design a chip RFID radio frequency identification device that can provide a stable radio frequency signal, realize long-distance radio frequency accurate identification, and realize automatic control of the chip RFID radio frequency identification device.

[0005] In order to achieve the above technical effects, the utility model adopts the following technical solutions:

[0006] A chip RFID radio frequency identification device, comprising: a transmitter, an antenna, a reader / writer, a hardware anti-shake device, an RFID identification chip, a controller and a power supply device, wherein the transmitter is arranged on the right side of the chip RFID radio frequency identification device, the reader / writer is installed above the chip RFID radio frequency identification device, the RFID identification chip is arranged below the reader / writer, the hardware anti-shake device is arranged inside the reader / writer, the controller is installed below the RFID identification chip, and the power supply device is arranged on the right side of the transmitter.

[0007] As a further description of the above technical solution:

[0008] The transmitter is configured as a radio frequency generator, which generates a stable radio frequency signal through a voltage oscillation circuit. A modem is disposed at the upper end of the transmitter to encode the radio frequency signal and load it into a 13.56 MHz high-frequency carrier signal. The modem transmits energy to the antenna through an output circuit to form a changing energy electromagnetic field around the antenna. A transformer is installed at the left end of the modem to change the amplitude and phase of the high-frequency carrier signal to achieve impedance matching between the output port of the transmitter and the input port of the antenna.

[0009] As a further description of the above technical solution:

[0010] The antenna includes an electronic tag antenna and a reader antenna. The electronic tag antenna is installed on the electronic tag of the target object. The electronic tag has a built-in UHF chip to store RFID tag data. The electronic tag antenna activates the UHF chip according to the energy electromagnetic field to generate a wireless signal. A packaging shell is arranged on the outside of the electronic tag. The reader antenna is installed on the upper end of the reader to receive the wireless signal.

[0011] As a further description of the above technical solution:

[0012] The built-in radio frequency front-end chip of the reader / writer digitally processes the wireless signal and outputs a digital signal. A DSP digital signal processing chip is arranged on the upper end of the radio frequency front-end chip to analyze, decode and resolve the digital signal and extract the RFID tag data.

[0013] As a further description of the above technical solution:

[0014] The hardware anti-jitter device is arranged inside the reader / writer through a hardware circuit. The hardware anti-jitter device filters out the noise and interference of the wireless signal through a band-stop filter. The hardware anti-jitter device sets a timing control circuit in the hardware circuit to strictly control the timing between the reader / writer and the wireless signal. The hardware anti-jitter device adjusts the sensitivity of the reader / writer through a variable gain amplifier and an adaptive gain control circuit to ensure that the RFID tag data is correctly read at different distances and environments.

[0015] As a further description of the above technical solution:

[0016] A radio frequency front-end receiver is arranged on the upper end of the RFID identification chip to receive RFID tag data without distortion. A built-in arithmetic logic decoder is arranged on the RFID identification chip to convert digital signals into meaningful data blocks. A processor is arranged on the upper end of the arithmetic logic decoder to reconstruct and perform protocol analysis on the data blocks and extract the identity information of the target object. The built-in internal memory of the processor performs cache management operations on the RFID tag data.

[0017] As a further description of the above technical solution:

[0018] The controller is set as a PLC logic controller, and the PLC logic controller has a built-in PLC control chip to control the automatic operation of the chip RFID radio frequency identification device. The power supply device has a built-in DC adapter and a rechargeable battery to convert AC power into DC power to provide power support for the chip RFID radio frequency identification device.

[0019] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present invention are: the transmitter generates a stable radio frequency signal through the voltage oscillation circuit of the radio frequency generator, the antenna realizes long-distance transmission of the radio frequency signal through the electronic tag antenna and the reader antenna, thereby realizing long-distance identification of the target object, the reader / writer analyzes, decodes and parses the digital signal through the built-in radio frequency front-end chip and the DSP digital signal processing chip, and extracts the RFID tag data, the reader / writer removes the interference signal through the hardware anti-jitter device to realize accurate reading of the RFID tag data in the wireless signal, the RFID identification chip realizes accurate identification of the target object through the radio frequency front-end receiver and the arithmetic logic decoder, and the controller realizes the orderly operation of the control chip RFID radio frequency identification device through the PLC control chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor, among which:

[0021] Figure 1 This is the overall architecture diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the transmitter of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the reader / writer of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the RFID identification chip of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the electronic tag of the utility model;

[0026] Figure 6 This is the electrical schematic diagram of the chip RFID radio frequency identification implemented by the utility model;

[0027] Numbers in the figure: 1. Transmitter; 2. Antenna; 3. Reader / writer; 4. Hardware anti-shake device; 5. RFID identification chip; 6. Controller; 7. Power supply; 8. Modem; 9. Transformer; 10. Electronic tag antenna; 11. Reader antenna; 12. Electronic tag; 13. UHF chip; 14. Package shell; 15. RF front-end chip; 16. DSP digital signal processing chip; 17. Band-stop filter; 18. Variable gain amplifier; 19. RF front-end receiver; 20. Arithmetic logic decoder; 21. Processor; 22. Internal memory; 23. PLC control chip; 24. DC adapter; 25. Rechargeable battery. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this utility model.

[0029] like Figure 1 As shown, a chip RFID radio frequency identification device, the monitoring device comprises:

[0030] The transmitter 1 is used to generate a radio frequency signal, transmit energy to the antenna 2 and generate a magnetic field; in a specific embodiment, the transmitter 1 generates a stable radio frequency signal through a voltage oscillation circuit, and after encoding, it is loaded as a 13.56MHz high-frequency carrier signal. At this time, the modem 8 modulates the amplitude and phase of the high-frequency carrier signal, and then transmits energy to the antenna 2 through the output circuit, forming a changing energy electromagnetic field around the antenna 2. In this process, the modem 8 is also equipped with a transformer 9 to change the amplitude and phase of the high-frequency carrier signal to achieve impedance matching between the output port of the transmitter 1 and the antenna input port. This ensures that the radio frequency signal can be smoothly transmitted to the antenna 2 and can be correctly decoded and recognized by the receiver.

[0031] Antenna 2 is used to establish a wireless electromagnetic connection to achieve information transmission; in a specific embodiment, the electronic tag antenna 10 and the reader antenna 11 are two important components of the antenna 2. The electronic tag antenna 10 is used together with the electronic tag 12 to activate the UHF chip 13 to generate a wireless signal and transmit the RFID tag data to the reader system. A packaging shell 14 is set on the outside of the electronic tag 12, which is mainly used to protect the chip and circuit inside the electronic tag to prevent damage or contamination. The reader antenna 11 is installed on the upper end of the reader 3, and is mainly used to receive the wireless signal generated after the electronic tag antenna 10 is activated, transmit the signal to the reader system, and then realize the functions of reading, identifying and decoding the tag data. Through the cooperation between the two antennas, operations such as wireless identification and tracking of the target object can be realized, which can be applied to logistics, inventory management, electronic payment, vehicle tracking, access control and other fields.

[0032] The reader / writer 3 is used to receive wireless signals and read the RFID tag data in the wireless signals; in a specific embodiment, the reader / writer 3 has a built-in radio frequency front-end chip 15, whose main function is to amplify, filter, mix and process the wireless signals received from the antenna 2, and convert them into digital signals for output. A DSP digital signal processing chip 16 is provided on the upper end of the radio frequency front-end chip 15. The chip is mainly responsible for analyzing, decoding and parsing the digital signals to extract the RFID tag data. In practical applications, the DSP digital signal processing chip 16 is usually used in conjunction with a related algorithm library to further improve the accuracy and stability of RFID recognition.

[0033] The hardware anti-shake device 4 is used to help the reader 2 eliminate errors caused by noise and interference and read the correct RFID tag data; in a specific embodiment, the hardware anti-shake device 4 is set inside the reader 3 through a hardware circuit, and its main function is to eliminate noise and interference in the wireless signal to ensure that the read RFID tag data is accurate. The hardware anti-shake device 4 uses a band-stop filter 17, which can effectively filter out noise and interference in the wireless signal. At the same time, the timing control circuit is set in the hardware circuit, which can strictly control the timing relationship between the reader 3 and the wireless signal, and avoid problems such as increased bit error rate caused by timing mismatch. In addition, the hardware anti-shake device 4 also uses a variable gain amplifier 18 and an adaptive gain control circuit. By adjusting the sensitivity of the reader 3, it can ensure that the RFID tag data is correctly read at different distances and environments. In this way, the stability and reliability of the RFID identification system can be improved, and strong support can be provided for subsequent business processes.

[0034] The RFID identification chip 5 is used to process and analyze the RFID tag data to achieve accurate identification of the target object; in a specific embodiment, the RFID identification chip 5 receives the RFID tag data without distortion through the RF front-end receiver 19, and the built-in arithmetic logic decoder 20 converts the digital signal into a meaningful data block. After decoding, a processor 21 is set at the upper end of the arithmetic logic decoder 20 to reconstruct and analyze the data block and extract the identity information of the target object. The processor 21 has a built-in internal memory 22 to perform cache management operations on the RFID tag data, thereby improving the recognition efficiency and accuracy.

[0035] The controller 6 is used to control the orderly operation of the chip RFID radio frequency identification device; in a specific embodiment, the controller 6 is set as a PLC logic controller, and has a built-in PLC control chip 23 for controlling the automatic operation of the RFID radio frequency identification device.

[0036] Power supply device 7: used to provide necessary power support to ensure the normal operation of the entire identification device; in a specific embodiment, the power supply device 7 has a built-in DC adapter 24 and a rechargeable battery 25, which can convert AC power into DC power to provide stable power support for the chip RFID radio frequency identification device. This ensures that the RFID radio frequency identification device will not fail or shut down due to power supply problems when working for a long time.

[0037] The transmitter 1 is arranged on the right side of the chip RFID radio frequency identification device, the reader / writer 3 is installed above the chip RFID radio frequency identification device, the RFID identification chip 5 is arranged below the reader / writer 3, the hardware anti-shake device 4 is arranged inside the reader / writer 3, the controller 6 is installed below the RFID identification chip 5, and the power supply device 7 is arranged on the right side of the transmitter 1.

[0038] The transmitter 1 is configured as a radio frequency generator, which generates a stable radio frequency signal through a voltage oscillation circuit. A modem 8 is disposed at the upper end of the transmitter 1 to encode the radio frequency signal and load it into a 13.56 MHz high-frequency carrier signal. The modem 8 transmits energy to the antenna 2 through an output circuit to form a changing energy electromagnetic field around the antenna 2. A transformer 9 is installed at the left end of the modem 8 to change the amplitude and phase of the high-frequency carrier signal to achieve impedance matching between the output port of the transmitter 1 and the antenna input port.

[0039] The antenna 2 includes an electronic tag antenna 10 and a reader antenna 11. The electronic tag antenna 10 is installed on an electronic tag 12 of a target object. The electronic tag 12 has a built-in UHF chip 13 to store RFID tag data. The electronic tag antenna 10 activates the UHF chip 13 according to the energy electromagnetic field to generate a wireless signal. A packaging shell 14 is provided on the outside of the electronic tag 12. The reader antenna 11 is installed on the upper end of the reader / writer 3 to receive wireless signals.

[0040] The reader / writer 3 has a built-in RF front-end chip 15 which digitally processes the wireless signal and outputs a digital signal. A DSP digital signal processing chip 16 is arranged on the upper end of the RF front-end chip 15 to analyze, decode and resolve the digital signal to extract the RFID tag data.

[0041] The hardware anti-jitter device 4 is arranged inside the reader / writer 3 through a hardware circuit. The hardware anti-jitter device 4 filters out the noise and interference of the wireless signal through a band-stop filter 17. The hardware anti-jitter device 4 sets a timing control circuit in the hardware circuit to strictly control the timing between the reader / writer 3 and the wireless signal. The hardware anti-jitter device 4 adjusts the sensitivity of the reader / writer 3 through a variable gain amplifier 18 and an adaptive gain control circuit to ensure that the RFID tag data is correctly read at different distances and environments.

[0042] A radio frequency front-end receiver 19 is arranged at the upper end of the RFID identification chip 5 to receive RFID tag data without distortion. The RFID identification chip 5 has a built-in arithmetic logic decoder 20 to convert digital signals into meaningful data blocks. A processor 21 is arranged at the upper end of the arithmetic logic decoder 20 to reconstruct and perform protocol analysis on the data blocks and extract the identity information of the target object. The processor 21 has a built-in internal memory 22 to perform cache management operations on the RFID tag data.

[0043] The controller 6 is configured as a PLC logic controller, and the PLC logic controller has a built-in PLC control chip 23 to control the automatic operation of the chip RFID radio frequency identification device. The power supply device 7 has a built-in DC adapter 24 and a rechargeable battery 25 to convert AC power into DC power to provide power support for the chip RFID radio frequency identification device.

[0044] The following is an exemplary description of the process of the chip RFID radio frequency identification device through a specific embodiment. When the utility model is working, the transmitter 1 first converts electrical energy into high-frequency electromagnetic waves through an internal circuit, and then transmits these electromagnetic waves to the antenna 2. When the tag enters the working range of the reader 3, it will sense the radio frequency signal from the transmitter 1, and use its internal antenna 2 to generate a wireless signal, and send the information stored in the tag back to the reader 3 after modulation. At this time, the reader will decode and process this information, and then read the RFID tag data in the wireless signal. Secondly, the hardware anti-shake device 4 can effectively remove these noise and interference signals by processing and filtering the received radio frequency signal, and improve the anti-interference performance of the system. Its main principle is to use electronic components such as filter circuits, amplifiers, and comparators to process the input signal, remove the clutter signal therein, and amplify the effective signal and output it to the reader for identification. The RFID identification chip 5 parses and processes the read RFID tag data to achieve accurate identification of the target object. The reader 3 usually needs to communicate with multiple tags, and these tags may send signals to the reader 3 at the same time, causing signal interference and collision. In order to avoid this situation, it is necessary to schedule and control the communication between the reader 3 and the tags. The controller 6 can coordinate the communication between the reader 3 and the tags to ensure that each tag can send data to the reader 3 in a certain order and time interval. Finally, during the whole process, the power supply device 7 will provide stable power support for the chip RFID radio frequency identification device to ensure that the device can operate normally. In short, the chip RFID radio frequency identification device works together through the components such as the transmitter 1, antenna 2, reader 3, hardware anti-shake device 4, RFID identification chip 5, controller 6 and power supply device 7 to achieve the identification and management of the target object. This device is widely used in warehousing, logistics, production and other fields, which can improve work efficiency and management level.

[0045] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these specific embodiments are only examples, and those skilled in the art may omit, replace, and change the details of the above methods and systems without departing from the principles and essence of the present invention. For example, merging the above method steps so as to perform substantially the same functions in substantially the same manner to achieve substantially the same results is within the scope of the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

Claims

1. A chip RFID radio frequency identification device, characterized in that: The identification device comprises: A transmitter (1) for generating a radio frequency signal to transmit energy to an antenna (2) and generate a magnetic field; Antenna (2), used to establish a wireless electromagnetic connection to achieve information transmission; A reader / writer (3), used for receiving wireless signals and reading RFID tag data in the wireless signals; A hardware anti-shake device (4) is used to help the reader (3) eliminate errors caused by noise and interference and read correct RFID tag data; An RFID identification chip (5) is used to process and analyze RFID tag data to achieve accurate identification of the target object; A controller (6) is used to control the chip RFID radio frequency identification device to operate in an orderly manner; Power supply device (7): used to provide necessary power support to ensure the normal operation of the entire identification device; The transmitter (1) is arranged on the right side of the chip RFID radio frequency identification device, the reader (3) is installed above the chip RFID radio frequency identification device, the RFID identification chip (5) is arranged below the reader (3), the hardware anti-shake device (4) is arranged inside the reader (3), the controller (6) is installed below the RFID identification chip (5), and the power supply device (7) is arranged on the right side of the transmitter (1).

2. A chip RFID radio frequency identification device according to claim 1, characterized in that: The transmitter (1) is configured as a radio frequency generator, which generates a stable radio frequency signal through a voltage oscillation circuit. A modem (8) is arranged at the upper end of the transmitter (1) to encode the radio frequency signal and load it into a 13.56 MHz high-frequency carrier signal. The modem (8) transmits energy to the antenna (2) through an output circuit, forming a changing energy electromagnetic field around the antenna (2). A transformer (9) is installed at the left end of the modem (8) to change the amplitude and phase of the high-frequency carrier signal to achieve impedance matching between the output port of the transmitter (1) and the input port of the antenna.

3. The chip RFID radio frequency identification device according to claim 1, characterized in that: The antenna (2) comprises an electronic tag antenna (10) and a reader antenna (11); the electronic tag antenna (10) is mounted on an electronic tag (12) of a target object; the electronic tag (12) has a built-in UHF chip (13) for storing RFID tag data; the electronic tag antenna (10) activates the UHF chip (13) according to an energy electromagnetic field to generate a wireless signal; a packaging shell (14) is arranged outside the electronic tag (12); and the reader antenna (11) is mounted on the upper end of a reader / writer (3) to receive wireless signals.

4. The chip RFID radio frequency identification device according to claim 1, characterized in that: The reader / writer (3) has a built-in radio frequency front-end chip (15) which digitally processes the wireless signal and outputs a digital signal. A DSP digital signal processing chip (16) is arranged on the upper end of the radio frequency front-end chip (15) to analyze, decode and resolve the digital signal and extract the RFID tag data.

5. The chip RFID radio frequency identification device according to claim 1, characterized in that: The hardware anti-jitter device (4) is arranged inside the reader / writer (3) through a hardware circuit. The hardware anti-jitter device (4) filters out noise and interference of the wireless signal through a band-stop filter (17). The hardware anti-jitter device (4) sets a timing control circuit in the hardware circuit to strictly control the timing between the reader / writer (3) and the wireless signal. The hardware anti-jitter device (4) adjusts the sensitivity of the reader / writer (3) through a variable gain amplifier (18) and an adaptive gain control circuit to ensure that the RFID tag data is correctly read under different distances and environments.

6. The chip RFID radio frequency identification device according to claim 1, characterized in that: A radio frequency front-end receiver (19) is arranged on the upper end of the RFID identification chip (5) to receive RFID tag data without distortion. An arithmetic logic decoder (20) is built in the RFID identification chip (5) to convert digital signals into meaningful data blocks. A processor (21) is arranged on the upper end of the arithmetic logic decoder (20) to reconstruct and perform protocol analysis on the data blocks and extract identity information of the target object. The processor (21) has a built-in internal memory (22) to perform cache management operations on the RFID tag data.

7. The chip RFID radio frequency identification device according to claim 1, characterized in that: The controller (6) is configured as a PLC logic controller, wherein the PLC logic controller has a built-in PLC control chip (23) for controlling the automatic operation of the chip RFID radio frequency identification device, and the power supply device (7) has a built-in DC adapter (24) and a rechargeable battery (25) for converting alternating current into direct current to provide power support for the chip RFID radio frequency identification device.

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