Plane radio frequency checking device and meal taking settlement system

Abstract

The utility model relates to the technical field of radio frequency identification, in particular to a planar radio frequency checking device and a meal taking settlement system which are light and thin in size, particularly suitable for being arranged on a flat table top or a partition plate, capable of remarkably reducing layout difficulty and convenient for subsequent maintenance and repair, and is characterized in that the planar radio frequency checking device is also provided with a coupling coil; an antenna coil of the radio frequency antenna is in signal coupling with the coupling coil, the radio frequency antenna sends radio frequency signals to the radio frequency tag through the coupling coil, signals returned by the radio frequency tag are sent back to the radio frequency antenna through the coupling coil, and compared with the prior art, the radio frequency tag has the remarkable advantages of being reasonable in structure, small in size, easy and convenient to arrange and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency identification, and in particular to a flat radio frequency inventory counting device and a meal collection and settlement system which are light and thin, particularly suitable for being arranged on a flat table top or partition, and can significantly reduce the difficulty of arrangement and facilitate subsequent maintenance and repair. Background Art

[0002] In order to realize the rapid inventory of items, the RFID tag information can be bound to the corresponding items, and the RFID tag can be attached to the items. At this time, the tag information pre-written in the tag can be read by the RFID reader / writer to realize the detection of the relevant item's in-place information. This technology has been applied to the fields of book and document processing, mainly used to realize the borrowing and returning of books, and has also been applied to the field of intelligent catering management. At present, the main form is to set RFID tags with pre-written meal amount information at the bottom of different types of plates, and set up RFID reading and writing mechanisms at the settlement location. The RFID reading and writing mechanisms read the pre-made information in the RFID tags carried on the plates, and complete the rapid acquisition and settlement of meal expenses.

[0003] In existing application environments, in the RF reading and writing mechanism, the RF reader is connected to the RF antenna and is uniformly fixed above the countertop. Alternatively, in order to ensure the cleanliness of the countertop, a cavity with an open top is opened on the countertop, and the RF reader and antenna are installed in the cavity, and then the cavity is closed with a cover. This not only results in the need to destroy the integrity of the countertop during installation, but also when used in public places such as smart catering management environments, soup spilled in the dish can easily contaminate the countertop and invade the cavity along the gap in the cover. The incomplete countertop is not easy to clean, which will also bring difficulties to subsequent maintenance and repair, extending the maintenance and repair cycle. Summary of the invention

[0004] In view of the shortcomings and deficiencies in the prior art, the utility model proposes a flat radio frequency inventory counting device and meal collection and settlement system which is light and thin, particularly suitable for being set on a flat table top or partition, and can significantly reduce the difficulty of installation and facilitate subsequent maintenance and overhaul.

[0005] The utility model achieves this through the following measures:

[0006] A planar radio frequency inventory device is provided with a power supply, a radio frequency reader / writer, a radio frequency antenna and a radio frequency tag, wherein the radio frequency reader / writer is connected to the power supply and the radio frequency antenna respectively, and is characterized in that a coupling coil is also provided, the antenna coil of the radio frequency antenna is coupled with the coupling coil signal, the radio frequency antenna sends a radio frequency signal to the radio frequency tag via the coupling coil, and the signal returned by the radio frequency tag is sent back to the radio frequency antenna via the coupling coil.

[0007] The coupling coil of the utility model is also provided with a matching circuit, which is used to adjust the resonant frequency of the coupling coil to 13.56MHz. The coupling coil adopts at least a double-turn coil, and at least two coils are located on the same plane. The coupling coil is arranged on a planar carrier, and the planar carrier is a non-metallic flat plate. Further, the planar carrier adopts a flexible non-metallic flat plate.

[0008] The radio frequency reader / writer of the utility model adopts a medium-distance radio frequency reader / writer, which works at 13.56 MHz. The radio frequency antenna is provided with an antenna coil and a matching circuit.

[0009] The utility model also proposes a meal collection and settlement system, wherein the meal collection and settlement system is provided with more than two meal plates with radio frequency tags attached thereto, and a settlement workbench is provided, wherein the settlement workbench is provided with the above-mentioned planar radio frequency inventory device, wherein the cross-section and coil and the matching circuit connected thereto are adhered to a flexible carrier and affixed to the table surface of the settlement workbench, the radio frequency reader / writer adopts a medium-range radio frequency reader / writer and is connected to a radio frequency antenna, and the medium-range radio frequency reader / writer and the radio frequency antenna are fixed under the settlement table.

[0010] When the utility model is in use, when the product to be counted with the RFID tag attached enters the area above the coupling coil, the RFID signal sent by the RFID reader is sent to the RFID tag via the coupling coil, and the signal returned by the RFID tag is returned to the RFID antenna via the coupling coil, and is further sent to the RFID reader to complete the reading and writing operation. Compared with the prior art, the utility model has a small coupling coil and is fixed on a flat carrier, so it can be attached to the surface or bottom of the table by adhesive, thereby ensuring the integrity of the table, significantly reducing the construction difficulty, and facilitating subsequent maintenance and replacement.

[0011] Compared with the prior art, the utility model has the remarkable advantages of reasonable structure, small volume, simple layout and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a structural schematic diagram of the utility model.

[0013] Reference numerals: radio frequency reader / writer 1 , radio frequency antenna 2 , coupling coil 3 , planar carrier 4 . DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] As attached Figure 1As shown, the utility model proposes a planar radio frequency inventory device, which is provided with a power supply, a radio frequency reader 1, a radio frequency antenna 2 and a radio frequency tag, wherein the radio frequency reader 1 is connected to the power supply and the radio frequency antenna 2 respectively, and is characterized in that a coupling coil 3 is also provided, the antenna coil of the radio frequency antenna 2 is signal-coupled with the coupling coil 3, the radio frequency antenna 2 sends a radio frequency signal to the radio frequency tag via the coupling coil 3, and the signal returned by the radio frequency tag is sent back to the radio frequency antenna 2 via the coupling coil 3.

[0016] The coupling coil 3 of the utility model adopts at least two coils, and at least two coils are located on the same plane. Further, the coupling coil 3 is arranged on a planar carrier 4, and the planar carrier 4 is a non-metallic flat plate. Further, the planar carrier 4 adopts a flexible non-metallic flat plate.

[0017] The radio frequency reader / writer 1 of the utility model is a medium-distance radio frequency reader / writer, which operates at 13.56 MHz. The radio frequency antenna 2 is provided with an antenna coil and a matching circuit. Example

[0018] This example provides an intelligent catering inventory device, which is provided with a settlement workbench 5, and the settlement workbench 5 is made of non-metallic material. The plane carrier 4 provided with a coupling coil 3 is fixed on the settlement table by adhesive, and the radio frequency reader 1 adopts a medium-range radio frequency reader and is connected to the radio frequency antenna 2. The radio frequency reader 1 and the radio frequency antenna 2 are arranged below or on the side of the settlement table; in this example, the plane carrier 4 adopts a flexible PU layer or a plastic layer, and the coupling coil and the matching circuit connected to the coupling coil are arranged between the flexible PU layer and the workbench. When the meal plate is spilled, the flexible plane carrier can be directly wiped without damaging the relevant electrical components, and there is no need to open an installation slot on the table to fix the radio frequency reader or antenna coil; this example is also provided with a host computer connected to the radio frequency reader 1 for conveniently displaying inventory information;

[0019] In this example, when in use, the RF reader / writer 1 is connected to a power source and sends or receives signals via the RF antenna 2. When a meal plate with a RF tag is placed on the flat carrier 4 on the upper surface of the settlement workbench 5, the antenna coil of the RF antenna 2 and the coupling coil 3 are electromagnetically coupled. The RF signal sent by the RF reader / writer 1 is sent to the RF tag via the coupling coil 3, and the signal returned by the RF tag is returned to the RF antenna 2 via the coupling coil 3 and further sent to the RF reader / writer to complete the reading and writing operation. When liquid is spilled, the surface of the flat carrier 4 can be cleaned.

[0020] Compared with the prior art, the coupling coil of the utility model is small in size and fixed on a flat carrier, so it can be attached to the surface or bottom of the table by adhesive, thereby ensuring the integrity of the table, significantly reducing the difficulty of construction, and facilitating subsequent maintenance and replacement.

Claims

1. A planar radio frequency inventory device, comprising a power supply, a radio frequency reader / writer, a radio frequency antenna and a radio frequency tag, wherein the radio frequency reader / writer is connected to the power supply and the radio frequency antenna respectively, characterized in that: A coupling coil is also provided, the antenna coil of the RF antenna is coupled with the coupling coil signal, the RF antenna sends a RF signal to the RF tag via the coupling coil, and the signal returned by the RF tag is sent back to the RF antenna via the coupling coil; the coupling coil adopts at least a double-turn coil, at least two coils are located on the same plane, and the coupling coil is arranged on a planar carrier.

2. A planar radio frequency inventory device according to claim 1, characterized in that: The coupling coil is also provided with a matching circuit, and the matching circuit is used to adjust the resonance frequency of the coupling coil to 13.56 MHz.

3. A planar radio frequency inventory device according to claim 1, characterized in that: The plane carrier is a non-metallic flat plate, and the plane carrier is a flexible non-metallic flat plate.

4. A planar radio frequency inventory device according to claim 1, characterized in that: The radio frequency reader is a medium-range radio frequency reader, which operates at 13.56 MHz. The radio frequency antenna is provided with an antenna coil and a matching circuit.

5. A meal collection and settlement system, wherein the meal collection and settlement system is provided with two or more meal trays with radio frequency tags attached thereto and a settlement workbench, characterized in that: The settlement workbench is provided with a planar RF inventory device as described in any one of claims 1 to 4, wherein the coupling coil and the matching circuit connected thereto are adhered to a flexible carrier and affixed to the surface of the settlement workbench, and the RF reader / writer adopts a medium-range RF reader / writer and is connected to a RF antenna, and the medium-range RF reader / writer and the RF antenna are fixed under the settlement table.

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