Integrated ultrahigh frequency RFID reader-writer

Abstract

The utility model discloses an integrated ultrahigh frequency RFID reader-writer, which comprises an outer shell, the outer shell is provided with a reader-writer antenna transmitting surface, the outer shell partially wraps an electronic component, an accommodating space is formed between the electronic component and the outer shell, epoxy resin glue is filled in the accommodating space, and the outer shell is provided with an antenna transmitting surface. A baffle plate is arranged between the epoxy resin glue and the electronic component; the other surface, parallel to the plane where the transmitting surface of the reader-writer antenna is located, of the outer shell is provided with an opening, and epoxy resin glue is poured from the opening. According to the integrated ultrahigh-frequency RFID reader-writer, the shell only provided with the upper cover structure is used, the baffle is used for isolating epoxy resin glue, the radio frequency performance of the ultrahigh-frequency RFID is guaranteed, and the size of the whole set of product can be made to be very small.

Description

Technical Field

[0001] The utility model relates to a test rack, in particular to a test rack used for testing a wireless radio frequency communication device. Background Art

[0002] Radio Frequency Identification (RFID) technology, also known as wireless radio frequency identification, is a contactless automatic identification technology that automatically identifies target objects and obtains relevant data through radio frequency signals. The identification process does not require human intervention and can work in various harsh environments. It can identify high-speed moving objects and can identify multiple tags at the same time. It is quick and convenient to operate, and it allows each object to have its own identity ID.

[0003] Among them, the ultra-high frequency RFID technology adopts the principle of electromagnetic backscatter coupling, and the operating frequency is generally 860-960MHz. The main standards for this frequency band are (ISO18000-6C) and (ISO18000-4). The ultra-high frequency RFID tag system does not require a separate power supply, has low cost, and has a reading range of several meters. It has great application potential in many fields.

[0004] However, this frequency band of UHF RFID can easily resonate with surrounding objects, so surrounding objects will have a great impact on the radio frequency performance of UHF RFID, and even cause the tag to not be read normally. In asset management, UHF RFID reader antennas or electronic tags are often used in liquid environments, such as being attached to materials containing high dielectric constant substances such as water, chemical glue or medicine. Water absorbs radio frequency signals, and the dielectric constant of water reaches a very high value of about 70 at a frequency of 1GHz. This will inevitably increase the minimum power threshold provided to the UHF RFID tag chip circuit, and will also cause the tag antenna to detune, resulting in a decrease in the power transmission coefficient of the UHF RFID tag, ultimately affecting the tag's reading range.

[0005] At present, the industry's integrated UHF RFID reader is difficult to make small, and generally adopts the form of upper and lower cover shells. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, the utility model proposes an integrated UHF RFID reader / writer. The integrated UHF RFID reader / writer uses a shell with only an upper cover structure, and uses a baffle to isolate the epoxy resin glue to ensure the UHF RFID radio frequency performance and can make the size of the entire product very small.

[0007] In order to achieve the above-mentioned object, the utility model provides an integrated ultra-high frequency RFID reader, comprising an outer shell, the outer shell is provided with an antenna emitting surface of the reader, the outer shell partially wraps the electronic components, and a containing space is formed between the electronic components and the outer shell, the containing space is filled with epoxy resin glue, and a baffle is provided between the epoxy resin glue and the electronic components;

[0008] Wherein, another surface of the outer shell body parallel to the plane where the emitting surface of the reader / writer antenna is located is provided with an opening, so that epoxy resin glue can be poured from the opening.

[0009] It should be noted that in the technical solution described in the present invention, in order to make the integrated UHF RFID reader of this case achieve the effect of small size and high protection level, therefore, on the one hand, by cleverly designing a baffle between the epoxy resin glue and the electronic components to save space while effectively isolating the epoxy resin glue and the radio frequency electronic components, thereby ensuring the passive radio frequency performance of the UHF RFID reader, and on the other hand, a reader antenna transmitting surface can be provided on the outer shell to ensure the radio frequency communication efficiency while further reducing the reader space, and the opposite surface of the reader antenna transmitting surface can be open or the plane is only a virtual plane (that is, there is no shell), thereby further saving space, and facilitating the subsequent injection of epoxy resin glue, while better forming a closed space.

[0010] Preferably, the electronic component is a PCB module.

[0011] Further preferably, the PCB module includes an ultra-high frequency RFID read / write main chip, a main control MCU, a ceramic antenna and a data communication module.

[0012] Further preferably, the ultra-high frequency RFID reading and writing main chip is MagicRF M100.

[0013] Further preferably, the data communication module includes one or more of TCP network port, RS-485 and RS-232.

[0014] Preferably, the baffle is made of PCB or plastic.

[0015] Preferably, the electronic components and the baffle are fixed by screws.

[0016] Preferably, the shell size of the integrated UHF RFID reader is 60-70 mm in length, 35-45 mm in width, and 15-25 mm in height.

[0017] During installation, the integrated UHF RFID reader described in the utility model can be installed in any way, for example, screw columns can be installed on the host electronic component PCB motherboard to fix the baffle, and screw holes for fixing the baffle can be reserved on the injection molded shell.

[0018] Based on the above technical scheme, the integrated UHF reader / writer described in the utility model is actually a host device that includes an RFID radio frequency antenna, an RFID reader / writer chip and a communication module, and ensures that the entire structure is small in size and sealed and waterproof.

[0019] Compared with the prior art, the integrated UHF reader / writer described in the utility model has the following advantages and beneficial effects:

[0020] The purpose of the utility model is to use a screw column to add a thin baffle on the PCB of the RFID reader host, so as to effectively isolate the epoxy resin glue and the radio frequency electronic components, ensure the passive radio frequency performance of the ultra-high frequency RFID reader, achieve a small overall volume, and a high level of product sealing and waterproofing, solve the problem that traditional ultra-high frequency integrated machines are difficult to make small and waterproof, so that such a small-volume ultra-high frequency integrated reader with a high level of protection is suitable for more installation application scenarios with narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the integrated UHF reader / writer of the utility model in one embodiment is shown;

[0022] Figure 2 The internal cavity structure of the integrated UHF reader / writer described in the utility model in one embodiment is shown. DETAILED DESCRIPTION

[0023] The wireless radio frequency device with a vertical tag and the system thereof described in the present invention will be further explained below in combination with the accompanying drawings and specific implementation methods of the specification, but the explanation does not constitute an improper limitation on the technical solution of the present invention.

[0024] Figure 1 The structure of the integrated UHF reader / writer of the utility model in one embodiment is shown;

[0025] Figure 2 The internal cavity structure of the integrated UHF reader / writer described in the utility model in one embodiment is shown.

[0026] like Figure 1 as shown, and if necessary, combined Figure 2The integrated UHF RFID reader / writer includes an outer shell 1 and an electronic component 3, wherein the outer shell 1 is provided with a reader / writer antenna transmitting surface B, the surface is provided with the electronic component 3, and a containing space A is formed between the electronic component 3 and the outer shell 1, and epoxy resin glue 5 is poured into the containing space A to achieve a sealing effect of the inner cavity of the outer shell 1, and a baffle 2 is provided between the epoxy resin glue 5 and the electronic component 3. And, referring to Figure 1 It can be seen that the plane C opposite to the emitting surface B of the reader antenna is provided with an opening, and the epoxy resin glue 5 is poured into the accommodating space A from the opening of the plane C.

[0027] In this embodiment, the electronic component 3 is a PCB module, which includes an ultra-high frequency RFID read-write main chip, a main control MCU, a ceramic antenna and a data communication module. The ultra-high frequency RFID read-write main chip is MagicRF M100, and the data communication module includes a TCP network port, RS-485 and RS-232. The material of the baffle 2 is PCB or plastic. It should be pointed out that PCB and plastic can be made of commonly used materials in this field, and the material itself does not involve improvement.

[0028] In addition, the electronic component 3 and the baffle 2 are fixed by screw columns 4 .

[0029] In addition, the housing size of the integrated UHF RFID reader is 68×40×20mm.

[0030] Depend on Figure 1 and Figure 2 It can be seen that the integrated UHF RFID reader / writer described in the utility model is an integrated host that integrates the functions of the RFID reader / writer main control chip, RFID radio frequency antenna, data communication module, etc. When used in a very small installation space, the reader / writer needs to have a small volume structure and good sealing performance. The outer shell structure generally adopts a back cover-free form to perform epoxy resin glue filling and sealing treatment. However, the working frequency band of the UHF RFID is easily affected by surrounding water, epoxy resin glue and other high dielectric constant substances. The radio frequency signal will be absorbed by the high dielectric constant substance, reducing the range and reading rate of the UHF RFID radio frequency signal collection. Therefore, the built-in circuit board and electronic components of the reader / writer must be isolated from the epoxy resin glue. The present invention cleverly achieves the isolation effect by setting a baffle 5, and does not set too many additional components to ensure the compact structure of the reader / writer.

[0031] It should be noted that the prior art part in the protection scope of the utility model is not limited to the embodiments given in the application documents. All prior art that does not contradict the scheme of the utility model, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the utility model.

[0032] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0033] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith are directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and should all fall within the protection scope of the present invention.

Claims

1. An integrated ultra-high frequency RFID reader / writer, characterized in that: It comprises an outer shell, the outer shell is provided with a reader antenna emitting surface, the outer shell partially wraps the electronic components, a containing space is formed between the electronic components and the outer shell, epoxy resin glue is poured into the containing space, and a baffle is provided between the epoxy resin glue and the electronic components; Wherein, another surface of the outer shell body parallel to the plane where the antenna emitting surface of the reader / writer is located is provided with an opening, so that epoxy resin glue can be poured from the opening.

2. The integrated UHF RFID reader / writer according to claim 1, characterized in that: The electronic component is a PCB module.

3. The integrated UHF RFID reader / writer according to claim 2, characterized in that: The PCB module includes an ultra-high frequency RFID read-write main chip, a main control MCU, a ceramic antenna and a data communication module.

4. The integrated UHF RFID reader / writer according to claim 3, characterized in that: The UHF RFID read-write main chip is MagicRF M100.

5. The integrated UHF RFID reader / writer according to claim 3, characterized in that: The data communication module includes one or more of TCP network port, RS-485 and RS-232.

6. The integrated UHF RFID reader / writer according to claim 1, characterized in that: The baffle is made of PCB or plastic.

7. The integrated UHF RFID reader / writer according to claim 1, characterized in that: The electronic components and the baffle are fixed via screw columns.

8. The integrated UHF RFID reader / writer according to claim 1, characterized in that: The baffle is made of PCB or plastic.

9. The integrated UHF RFID reader / writer according to claim 1, characterized in that: The shell size of the integrated UHF RFID reader is 60-70 mm in length, 35-45 mm in width, and 15-25 mm in height.

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