CN211956519U

CN211956519U - Ultrahigh frequency desktop type RFID (radio frequency identification) electronic tag reader-writer

Info

Publication number: CN211956519U
Application number: CN202020839656.3U
Authority: CN
Inventors: 周第新; 周广俊; 庞富允; 周湖; 许春燕; 周第富
Original assignee: Shenzhen Junfa Ruida Intelligent Technology Co ltd
Current assignee: Shenzhen Junfa Ruida Intelligent Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-11-17
Anticipated expiration: 2030-05-19

Abstract

The utility model provides an hyperfrequency desktop formula RFID electronic tags read write line, including casing, control circuit board and drain pan, the drain pan upper end is equipped with the fixed column, the fixed column link up locate the locating hole on the control circuit board and be used for being fixed in the drain pan with control circuit board on, the casing inboard is equipped with the draw-in groove, the draw-in groove with locate fixture block buckle on the drain pan is connected, casing one end is equipped with the USB communication interface who is connected with control circuit board, still be equipped with on the casing and be connected change over switch with control circuit board, change over switch is used for signal switching between USB communication and the analog keyboard. Implement the utility model discloses an hyperfrequency desktop formula RFID electronic tags read write line design simple structure, the integrated level is high, convenient assembling, and the low power dissipation supports a key and switches simulation keyboard output, and the simple operation can be applied to fields such as read write label, production design spare, wisdom new retail, attendance and entrance guard and system integration.

Description

Ultrahigh frequency desktop type RFID (radio frequency identification) electronic tag reader-writer

Technical Field

The utility model relates to an electronic tags read write line technical field, in particular to hyperfrequency desktop formula RFID electronic tags read write line.

Background

With the arrival of the mobile internet era using the 5G technology as a benchmark, the internet of everything interconnection and the internet of things perception are gradually becoming reality, the RFID is used as an important supporting technology for the perception of the internet of things, and RFID tags can be divided into different types such as Low Frequency (LF), High Frequency (HF), Ultra High Frequency (UHF) and microwave according to the difference of working frequency. The working principles of the RFID in different frequency bands are different, the RFID in the LF and HF frequency bands generally adopts an electromagnetic coupling principle, and the RFID in the UHF and microwave frequency bands generally adopts an electromagnetic transmission principle, so that proper frequency needs to be selected firstly for correct use.

The ultrahigh frequency RFID has quite wide market application scenes, and has the advantages of capability of reading a plurality of tags at one time, long identification distance, high data transmission speed, high reliability and service life, capability of resisting outdoor severe environment and the like. The system can be used for asset management, production line management, supply chain management, warehousing, anti-counterfeiting traceability of various articles (such as tobacco, wine, medicine and the like), retail, vehicle management and the like.

At present, the ultrahigh frequency RFID electronic tag reader-writer in the market mostly has the problems of complex design structure, low integration level, high power consumption and high production cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides an integrated level is high, convenient assembling, low power dissipation, convenient to use, hyperfrequency desktop formula RFID electronic tags read write line with low costs.

The utility model discloses an hyperfrequency desktop formula RFID electronic tags read write line, including casing, control circuit board and drain pan, the drain pan upper end is equipped with the fixed column, the fixed column link up locate the locating hole on the control circuit board and be used for being fixed in the drain pan with control circuit board on, the casing inboard is equipped with the draw-in groove, the draw-in groove with locate fixture block buckle on the drain pan is connected, casing one end is equipped with the USB communication interface who is connected with control circuit board, still be equipped with on the casing and be connected change over switch with control circuit board, change over switch is used for signal switching between USB communication and the analog keyboard.

Furthermore, the control circuit board comprises a power circuit, a main control chip circuit, an RF chip circuit, a radio frequency antenna circuit and a buzzer circuit, wherein the power circuit, the RF chip circuit, the radio frequency antenna circuit and the buzzer circuit are all connected with the main control chip circuit.

Further, the main control chip circuit comprises an MCU chip, and the model of the MCU chip is STM32F103RCT 6.

Further, the RF chip circuit comprises a radio frequency chip, and the model of the radio frequency chip is SOCM100/QFN 32.

Further, the buzzer circuit comprises a first resistor, a triode, a first capacitor, a second capacitor and a buzzer, one end of the first resistor is connected with the main control chip circuit, the other end of the first resistor is connected with the base of the triode, the emitter of the triode is connected with the output end V33 of the power supply circuit and the public connecting end of the first capacitor and the second capacitor, the other public end of the first capacitor and the second capacitor is grounded, the collector of the triode is connected with one end of the buzzer, and the other end of the buzzer is grounded.

Further, control circuit board still includes the reset circuit who connects main control chip circuit, reset circuit includes second resistance and reset key, second resistance one end is connected power supply circuit, and reset key one end is connected to the other end, the other end ground connection of reset key.

Furthermore, a system operation indicator light and a power indicator light which are electrically connected with the control circuit board are arranged on the shell.

The ultrahigh frequency desktop type RFID electronic tag reader-writer implementing the technical scheme has the following technical effects:

implement the utility model discloses an hyperfrequency desktop formula RFID electronic tags read write line design simple structure, the integrated level is high, convenient assembling, and the low power dissipation supports a key and switches simulation keyboard output, and the simple operation can be applied to fields such as read write label, production design spare, wisdom new retail, attendance and entrance guard and system integration.

Drawings

For the purpose of clearly illustrating the embodiments or technical solutions of the present invention, the drawings are used for brief description. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is an exploded view of an ultrahigh frequency desktop RFID tag reader/writer according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an ultrahigh frequency desktop RFID tag reader/writer according to an embodiment of the present invention;

fig. 3 is a schematic view of another view structure of an ultrahigh frequency desktop RFID tag reader/writer according to an embodiment of the present invention;

FIG. 4 is a functional block diagram of the control circuit board of FIG. 1;

FIG. 5 is a schematic diagram of a circuit structure of the main control chip in FIG. 4;

FIG. 6 is a circuit diagram of the RF chip of FIG. 4;

FIG. 7 is a schematic diagram of the circuit structure of the buzzer in FIG. 4;

fig. 8 is a schematic diagram of the reset circuit of fig. 4.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides an ultrahigh frequency desktop type RFID electronic tag reader-writer, including a housing 1, a control circuit board 2 and a bottom shell 3, the upper end of the bottom shell 1 is provided with a fixing column 4, the fixing column 4 is penetrated through a positioning hole 5 arranged on the control circuit board 2 and used for fixing the control circuit board 2 on the bottom shell 3, the inner side of the housing 1 is provided with a clamping groove (not shown in the figure), the clamping groove is connected with a clamping block 6 arranged on the bottom shell 3 in a buckling manner, one end of the housing 1 is provided with a USB communication interface 7 connected with the control circuit board 2, the housing 1 is further provided with a transfer switch 8 connected with the control circuit board 2, and the transfer switch 8 is used for signal switching.

Referring to fig. 4, the control circuit board 2 includes a power circuit 20, a main control chip circuit 30, an RF chip circuit 40, an RF antenna circuit 50, and a buzzer circuit 60, wherein the power circuit 20, the RF chip circuit 40, the RF antenna circuit 50, and the buzzer circuit 60 are all connected to the main control chip circuit 30.

Referring to fig. 5, the main control chip circuit 30 includes an MCU chip, and the model of the MCU chip is STM32F103RCT 6.

Referring to FIG. 6, the RF chip circuit 40 includes a RF chip, which is SOCM100/QFN 32.

Referring to fig. 7, the buzzer circuit 60 includes a first resistor (R31), a triode (Q6), a first capacitor (C11), a second capacitor (C12), and a buzzer, one end of the first resistor (R31) is connected to the main control chip circuit, the other end of the first resistor (R31) is connected to the base of the triode (Q6), the emitter of the triode (Q6) is connected to the common connection end of the output terminal V33 of the power supply circuit, the first capacitor (C11), and the second capacitor (C12), the other common ends of the first capacitor (C11) and the second capacitor (C12) are grounded, the collector of the triode (Q6) is connected to one end of the buzzer, and the other end of the buzzer is grounded.

Referring to fig. 4 and 8, the control circuit board 2 further includes a reset circuit 70 connected to the main control chip circuit 30, the reset circuit 70 includes a second resistor (R10) and a reset key (SW1), one end of the second resistor (R10) is connected to the power circuit, the other end of the second resistor is connected to one end of the reset key (SW1), and the other end of the reset key (SW1) is grounded.

Referring to fig. 1, 2 and 3, the housing 1 is provided with a system operation indicator lamp 9 and a power indicator lamp 10 electrically connected to the control circuit board 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements and the like, which are made within the spirit and principles of the present invention.

Claims

1. The ultrahigh frequency desktop type RFID electronic tag reader-writer is characterized by comprising a shell (1), a control circuit board (2) and a bottom shell (3), wherein a fixing column (4) is arranged at the upper end of the bottom shell (3), the fixing column (4) penetrates through a positioning hole (5) formed in the control circuit board (2) and is used for fixing the control circuit board (2) on the bottom shell (3), a clamping groove is formed in the inner side of the shell (1) and is connected with a clamping block (6) arranged on the bottom shell (3) in a buckling mode, a USB communication interface (7) connected with the control circuit board (2) is arranged at one end of the shell (1), a conversion switch (8) connected with the control circuit board (2) is further arranged on the shell (1), and the conversion switch (8) is used for signal switching between USB communication and an analog keyboard.

2. The ultrahigh frequency desktop type RFID tag reader-writer according to claim 1, wherein the control circuit board (2) comprises a power circuit (20), a main control chip circuit (30), an RF chip circuit (40), a radio frequency antenna circuit (50) and a buzzer circuit (60), and the power circuit (20), the RF chip circuit (40), the radio frequency antenna circuit (50) and the buzzer circuit (60) are all connected with the main control chip circuit (30).

3. The ultrahigh frequency desktop type RFID tag reader-writer of claim 2, wherein the main control chip circuit (30) comprises an MCU chip, and the model of the MCU chip is STM32F103RCT 6.

4. The uhf desktop RFID tag reader/writer of claim 2, wherein the RF chip circuit (40) comprises a radio frequency chip of model SOCM100/QFN 32.

5. The UHF desktop RFID tag reader-writer of claim 2, wherein the buzzer circuit (60) comprises a first resistor (R31), a triode (Q6), a first capacitor (C11), a second capacitor (C12) and a buzzer, one end of the first resistor (R31) is connected to the main control chip circuit, the other end of the first resistor (R31) is connected to the base of the triode (Q6), the emitter of the triode (Q6) is connected to the output end V33 of the power circuit and the common connection end of the first capacitor (C11) and the second capacitor (C12), the other common ends of the first capacitor (C11) and the second capacitor (C12) are grounded, the collector of the triode (Q6) is connected to one end of the buzzer, and the other end of the buzzer is grounded.

6. The UHF desktop RFID tag reader-writer of claim 2, wherein the control circuit board (2) further comprises a reset circuit (70) connected to the main control chip circuit (30), the reset circuit (70) comprises a second resistor (R10) and a reset key (SW1), one end of the second resistor (R10) is connected to the power circuit, the other end of the second resistor is connected to one end of the reset key (SW1), and the other end of the reset key (SW1) is grounded.

7. The ultrahigh frequency desktop type RFID tag reader-writer according to claim 1, wherein a system operation indicator lamp (9) and a power indicator lamp (10) electrically connected to the control circuit board (2) are disposed on the housing (1).