RFID reagent refrigerated cabinet based on matrix antenna

Abstract

The utility model discloses an RFID reagent refrigerated cabinet based on a matrix antenna, which comprises a cabinet body, an accommodating cavity is arranged in the cabinet body, a plurality of layers of matrix antenna plates are arranged in the accommodating cavity at intervals, each matrix antenna plate comprises a substrate, a plurality of groups of matrix coils are integrated on the substrate, and each group of coils is connected in series with an antenna tuning plate. And the matrix antenna plates are electrically connected with a high-frequency reader-writer arranged at the upper end of the cabinet body. According to the utility model, the plurality of layers of matrix antenna plates are arranged in the cabinet body, and a plurality of groups of matrix type coils are integrated on the matrix antenna plates, so that a stronger and more uniform magnetic field can be generated around the matrix antenna plates, the identification effect of RFID reagents can be effectively enhanced, parallel tags can be read, and the reading efficiency can be improved. In addition, the RFID label can be effectively identified in various modes such as front vertical placement, side vertical placement, inclined placement and the like, so that the pasting modes of the RFID label are more diversified, the requirement for pasting the label by a code pasting person is reduced, and the RFID label is more convenient and reliable to use.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically to an RFID reagent refrigerator based on a matrix antenna. Background Technology

[0002] With the development of information technology, hospitals are paying increasing attention to the safety, reliability, and effectiveness of reagents in medical use. In vitro diagnostic reagents are a special type of medical device or drug, mainly including diagnostic reagents, reagent kits, quality control products, calibrators, etc. They play a very important role in disease prevention, prognosis observation, diagnosis, and treatment monitoring, and the quality management of reagents is of paramount importance in ensuring the quality of testing.

[0003] Traditional reagent management largely lacks intelligent information management methods, making it impossible for managers to monitor reagent usage in a timely, accurate, and comprehensive manner. Processes such as warehousing, requisition, return, and disposal cannot be accurately controlled in real time. Manual methods result in complex procedures, low efficiency, and frequent errors. Furthermore, reagent usage generates a large amount of original records, which traditionally rely on paper records or Excel spreadsheets, leading to cumbersome operations, difficulty in data retention, high error rates, and difficulties in retrieval.

[0004] Of course, there are also a few smart refrigerators on the market that use a single antenna plate. However, the magnetic field strength generated per unit area by this antenna plate is relatively small, and a "void" appears directly above the center of the coil, resulting in a weaker and uneven magnetic field in the middle. Therefore, the ability to identify RFID tags on reagents inside the refrigerator is poor, and there are certain requirements for the placement of RFID tags. That is, the coupling area between the tag coil and the antenna coil should be as large as possible, which limits how RFID tags can be pasted on reagent packaging. They also need to be kept balanced during placement. Therefore, when using refrigerators with single antenna plates, the single antenna plate has poor RFID tag recognition capabilities, high requirements for reagent placement, and is extremely inconvenient. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide an RFID reagent refrigerator based on a matrix antenna, which solves the problems of low intelligence, high error rate and difficulty in querying traditional reagent storage in the existing technology. At the same time, it solves the problems of poor RFID tag recognition capability, high requirements for reagent placement and inconvenience of use of refrigerators with single antenna boards in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An RFID reagent refrigerator based on a matrix antenna includes a cabinet body with a receiving cavity inside. Multiple matrix antenna plates are spaced apart in the receiving cavity. Each matrix antenna plate includes a base plate with several sets of matrix coils integrated on it. Each set of coils is connected in series with an antenna tuning board. The matrix antenna plates are all electrically connected to a high-frequency reader / writer located at the top of the cabinet body.

[0008] With the above structural design, a multi-layer matrix antenna board is installed inside the cabinet, and several sets of matrix coils are integrated on the substrate of the matrix antenna board. Therefore, when the high-frequency reader is turned on in a time-division manner, a stronger and more uniform magnetic field can be generated around the matrix antenna board, which can effectively enhance the identification effect of RFID reagents.

[0009] Preferably, a mounting groove is provided on one side of the substrate, and the coil is installed in the mounting groove. The coil integrated in the substrate includes a first coil, a second coil, a third coil, and a fourth coil, and the first coil, the second coil, the third coil, and the fourth coil are arranged in a matrix.

[0010] With the above structural design, a first coil, a second coil, a third coil, and a fourth coil are set inside the substrate. The four sets of coils cover the entire substrate and are arranged in a matrix, which makes the magnetic field around the substrate stronger and more uniform, thereby enhancing the recognition effect and stability of the label.

[0011] Preferably, the first, second, third, and fourth coils are superimposed in the middle to form a strong magnetic region, making the magnetic field distribution around the substrate more uniform, and the high-frequency reader / writer connected by electrical connection is turned on in a time-division manner.

[0012] The above structural design avoids the occurrence of a weak magnetic field in the middle, and the use of a high-frequency reader to open the first, second, third, and fourth coils in a time-sharing manner can prevent mutual interference between the coils.

[0013] Preferably, the first coil, the second coil, the third coil, and the fourth coil are all relatively independent and are respectively connected to the antenna tuning board to form a circuit.

[0014] By adopting the above structural design, impedance matching between the antenna and the feed line can be achieved through the setting of the antenna tuning board, which increases transmission efficiency, reduces energy loss, and reduces signal reflection. This allows the antenna to maintain optimal performance in the 13.56MHz operating frequency range, while filtering out unwanted frequency components and reducing the impact of external interference on antenna performance.

[0015] Preferably, 3-5 matrix antenna panels are spaced apart inside the cabinet, and the interval between adjacent matrix antenna panels is 20-50cm.

[0016] Preferably, the substrate is a PVC board.

[0017] Preferably, the cabinet is also equipped with a control host, a compressor and a temperature sensor, and an LCD display board is provided at the top of the cabinet. The LCD display board is electrically connected to the temperature sensor to display the temperature inside the cabinet in real time.

[0018] The above structural design allows for real-time monitoring of the temperature inside the cabinet, thereby ensuring the safety of reagent use.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The cabinet of this utility model is equipped with a multi-layer matrix antenna board, and the base plate of the matrix antenna board integrates several sets of matrix coils. Therefore, when the high-frequency reader is turned on in a time-division manner, a stronger and more uniform magnetic field can be generated around the matrix antenna board, which can effectively enhance the identification effect of RFID reagents. Therefore, the matrix antenna can not only read parallel tags, but also effectively identify tags placed in various ways such as vertically facing, vertically facing, or tilted, making the RFID tag pasting methods more diversified, reducing the requirements for the tag pasting personnel, and making it more convenient and reliable in use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cabinet structure of this utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure of the matrix antenna board;

[0023] Figure 3 This is a schematic diagram of the Received Signal Strength Indicator (RSSI) for a single antenna in the prior art;

[0024] Figure 4 This is a schematic diagram of the received signal strength indicator (RSSI) of the matrix antenna in this utility model.

[0025] In the picture:

[0026] Cabinet 1, Receiving cavity 2, Matrix antenna board 3, Base plate 3a, Antenna tuning board 3b, First coil 3c, Second coil 3d, Third coil 3e, Fourth coil 3f, LCD display board 4. Detailed Implementation

[0027] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Please see Figure 1 and Figure 2 An RFID reagent refrigerator based on a matrix antenna is disclosed, comprising a cabinet body 1. The cabinet body 1 houses a control host and a compressor; this structure is a conventional technical solution in the field and will not be described in detail here. The cabinet body 1 also includes a temperature sensor, and an LCD display panel 4 is located at the top of the cabinet body 1. The LCD display panel 4 is electrically connected to the temperature sensor to display the temperature inside the cabinet body 1 in real time. The refrigerator can set maximum and minimum temperature thresholds inside the cabinet body 1 through the control host. When the temperature sensor detects that the internal temperature is outside the threshold range, an automatic alarm can be triggered, thus improving the safety of reagent use.

[0030] The cabinet 1 has a receiving cavity 2, and multiple matrix antenna boards 3 are arranged at intervals in the receiving cavity 2. The matrix antenna board 3 includes a substrate 3a, which in this embodiment is a PVC board. Several sets of matrix coils are integrated on the substrate 3a, and an antenna tuning board 3b is connected in series with each set of coils. The matrix antenna boards 3 are all electrically connected to a high-frequency reader / writer disposed at the upper end of the cabinet 1.

[0031] The specific structure is as follows:

[0032] A mounting slot is formed on one side of the substrate 3a, and the mounting slot is formed according to the set position of the coil, and the coil is installed in the mounting slot. The coil integrated within the substrate 3a includes a first coil 3c, a second coil 3d, a third coil 3e, and a fourth coil 3f, which are arranged in a matrix. Simultaneously, the overlapping of the first coil 3c, second coil 3d, third coil 3e, and fourth coil 3f in the middle forms a strong magnetic region, making the magnetic field distribution around the substrate 3a more uniform. Furthermore, the high-frequency reader / writer, which is electrically connected, is activated in a time-division multiplexing manner, thus avoiding mutual interference between antennas and improving the stability of recognition.

[0033] In this embodiment, the first coil 3c, the second coil 3d, the third coil 3e, and the fourth coil 3f are all relatively independent and are respectively connected to the antenna tuning board 3b to form a circuit. This can achieve impedance matching between the antenna and the feed line, increase transmission efficiency, reduce energy loss, and reduce signal reflection. It allows the antenna to maintain optimal performance in the 13.56MHz operating frequency range, while filtering out unwanted frequency components and reducing the impact of external interference on antenna performance.

[0034] In this embodiment, 3-5 matrix antenna panels 3 are arranged at intervals inside the cabinet 1, and the interval between adjacent matrix antenna panels 3 is 20-50cm, which can further ensure the magnetic field strength and improve the identification function of the tag.

[0035] When using the refrigerated cabinet of this invention, reagents are first tagged with RFID tags before being placed inside. After storage, the reagents can be used normally. Once the cabinet door is closed after use, a high-frequency reader sequentially activates each matrix antenna board 3 to query the data, transmitting the retrieved information to the backend database. The control host can then calculate the reagent inventory and usage quantities based on data differences over different times. Each time the door is opened and closed, the reagent tags in the refrigerated cabinet are read, and the database is updated. Because this application uses a multi-layer matrix antenna board with several sets of matrix coils integrated on its substrate, its tag recognition function is strong, ensuring the authenticity and stability of reagent information and preventing missed readings. It also allows for vertical placement of high-frequency tags, enabling them to be placed freely within the refrigerated cabinet and improving work efficiency.

[0036] Please see Figure 3 and Figure 4 In this embodiment, the identification functions of the matrix antenna board 3 inside the cabinet 1 and a single antenna board are compared. Simultaneously, using a 50*50CM antenna and the same RFID tag at a height of 30CM from the antenna board, the RSSI (Receiving Signal Strength Indicator) of both antennas is measured. It is evident that the matrix antenna board 3 in this application generates a stronger and more uniform magnetic field, effectively enhancing the identification effect of high-frequency tags. A typical single antenna board, under the same power conditions, generates a relatively small magnetic field strength per unit area, and a "void" appears at the center directly above the coil. Therefore, the identification effect of the matrix antenna board 3 in this application is significantly stronger than that of a single antenna board.

[0037] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A matrix antenna based RFID reagent refrigerator, characterized by, The utility model relates to a high-frequency read-write device cabinet, including cabinet (1), be equipped with containing cavity (2) in the cabinet (1), the containing cavity (2) is spaced apart and is provided with multilayer matrix antenna board (3), the matrix antenna board (3) includes base plate (3a), and the base plate (3a) is integrated with several groups of matrix coil, and every group of coil has the antenna tuning board (3b) in series, the matrix antenna board (3) all with the high-frequency read-write device electric connection that sets up in the cabinet (1) upper end.

2. The matrix antenna based RFID reagent refrigerator of claim 1, wherein, The base plate (3a) is provided with a mounting groove on one side, and the coil is installed in the mounting groove, wherein the coil integrated in the base plate (3a) includes a first coil (3c), a second coil (3d), a third coil (3e) and a fourth coil (3f), and the first coil (3c), the second coil (3d), the third coil (3e) and the fourth coil (3f) are arranged in a matrix manner.

3. The matrix antenna based RFID reagent refrigerator of claim 2, wherein, The middle part of the first coil (3c), the second coil (3d), the third coil (3e) and the fourth coil (3f) are superimposed to form a strong magnetic area, so that the magnetic field distribution around the base plate (3a) is more uniform, and the high-frequency read-write device connected by electricity is opened in time.

4. The matrix antenna based RFID reagent refrigerator of claim 3, wherein, The first coil (3c), the second coil (3d), the third coil (3e) and the fourth coil (3f) are relatively independent and connected with the antenna tuning board (3b) respectively to form a loop.

5. The matrix antenna based RFID reagent refrigerator of claim 1, wherein, The cabinet (1) is spaced apart by 3-5 matrix antenna boards (3), and the interval between adjacent matrix antenna boards (3) is 20-50 cm.

6. The matrix antenna based RFID reagent refrigerator of claim 1, wherein, The base plate (3a) is a PVC plate.

7. The matrix antenna based RFID reagent refrigerator of claim 1, wherein, The cabinet (1) is further provided with a control host, a compressor and a temperature sensor, and the upper end of the cabinet (1) is provided with an LCD display board (4) which is electrically connected with the temperature sensor to display the temperature in the cabinet (1) in real time.

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