WO2021097833A1

WO2021097833A1 - Storage device, scan control method for antenna, and freezer system

Info

Publication number: WO2021097833A1
Application number: PCT/CN2019/120368
Authority: WO
Inventors: 吴晓; 胡龙耀; 耿路; 吴靖; 范育宸; 刘怀国; 刘润声
Original assignee: 连云港伍江数码科技有限公司
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-05-27

Abstract

The present application relates to a storage device, comprising a cabinet, a support plate, dividers, multiple antennas, and multiple RFID modules. The dividers are structurally connected to the support plate, and are all located in the cabinet. The RFID modules are all provided on the cabinet. The cabinet comprises a bottom plate. An arbitrary RFID module is communicatively connected to at least one antenna. The antennas are separately provided on the dividers and the bottom plate. The cabinet is used to accommodate articles carrying corresponding RFID tags. The support plate is used to carry the articles displaying statuses. The dividers are used to separate the articles displaying statuses. When the RFID modules operate simultaneously, corresponding antennas are respectively driven at configured frequency intervals to perform frequency hopping scan in configured frequency bands, so as to acquire article information of each article. The antennas are appropriately arranged on the dividers and the bottom plate in the storage device, and frequency hopping scan control is performed on the antennas when the RFID modules operate simultaneously so as to efficiently and precisely acquire article information of each article, thereby improving the recognition precision of an article in a freezer.

Description

Storage device, antenna scanning control method and freezer system

Technical field

This application relates to the technical field of electrical appliances, in particular to a storage device, an antenna scanning control method, and a freezer system.

Background technique

With the continuous development of social cultural technology, people's living standards continue to improve. The acceleration of informatization has made all aspects of production and life colorful. Throughout the entire chain of production and consumption, the technologies applied in each link are rapidly being updated, moving towards intelligence at full speed, providing people with increasingly convenient and efficient production and life tools, thereby enriching people's production and life content.

In the above trend of rapid development of intelligence, the consumer field has rapidly updated from the traditional physical sales model in the past to the current Internet + model, and is still continuing to upgrade at a high speed. In the consumer field, supermarkets are an important place that accompanies people’s lives, and traditional supermarkets are also progressing with the advancement of informatization and intelligence. Both sales models and supporting equipment are gradually being upgraded to adapt to the development of society and technology. , To meet people's ever-increasing quality of life needs. In consumer places such as supermarkets, refrigerated items occupy a large market share, and with the development of unmanned sales mode, the number of applications of storage devices, such as freezers, is increasing. However, in the process of implementing the present invention, the inventor found that the traditional storage device at least still has the problem of low object identification accuracy.

Summary of the invention

Based on this, it is necessary to provide a storage device, an antenna scanning control method, an antenna scanning control device, and a freezer system that can greatly improve the accuracy of item identification in response to the above technical problems.

In order to achieve the foregoing objectives, the embodiments of the present invention adopt the following technical solutions:

On the one hand, an embodiment of the present invention provides a storage device that includes a cabinet, a pallet, a partition, a plurality of antennas, and a plurality of RFID modules. The partition structure is connected to the pallet and is located in the cabinet. The RFID modules are all arranged on the cabinet;

The cabinet body includes a bottom plate, any one of the RFID modules is connected to at least one of the antennas, and each of the antennas is respectively arranged on the partition and the bottom plate;

The bottom plate and the pallet are both used to carry each of the articles, and the partition is used to separate each of the articles on the pallet;

Each of the RFID modules works at the same time and each at a set frequency interval, drives the corresponding antenna to perform frequency hopping scans in each set frequency band, and collects the item information of each of the items.

On the other hand, there is also provided an antenna scanning control method, which is applied to the above-mentioned storage device, and includes:

Send a control signal to each RFID module; wherein, the control signal is used to instruct each of the RFID modules to drive the corresponding antenna to perform frequency hopping scanning in each set frequency band at a set frequency interval, and to collect each of the items Item information.

In yet another aspect, an antenna scanning control device is also provided, including:

The signal sending module is used to send control signals to each RFID module respectively; wherein, the control signal is used to instruct each of the RFID modules to drive the corresponding antenna to perform frequency hopping scanning in the set frequency band at a set frequency interval, and to collect The item information of each said item.

In another aspect, a computer-readable storage medium is also provided, on which a computer program is stored, and the computer program implements the steps of the antenna scanning control method when the computer program is executed by a processor.

In yet another aspect, a freezer system is also provided, including a device interface, a management device, and the storage device. The device interface is provided on the cabinet of the storage device, and the device interface is respectively connected to the storage device. The RFID module and the management device of an object device, and the management device is configured to receive the item information sent by the RFID module through the device interface.

One of the above technical solutions has the following advantages and beneficial effects:

In the above-mentioned freezer, antennas are reasonably arranged on the partition and bottom plate in the storage device, and when each RFID module is working at the same time, the corresponding antenna is driven to perform frequency hopping scanning in the set frequency interval at a set frequency interval. , To achieve efficient and more accurate collection of item information of each item. In this way, it effectively solves the problems of large-capacity freezer and other storage devices, such as large identification blind areas and low recognition accuracy of RFID tags by antenna layout, and achieves the goals of greatly simplifying the antenna layout structure, convenient installation, and small identification blind areas. Improve the accuracy of the identification of items in the freezer.

Description of the drawings

Figure 1 is a structural block diagram of a storage device in an embodiment;

FIG. 2 is a schematic diagram of the working sequence of the RFID module in an embodiment;

FIG. 3 is a schematic diagram of frequency hopping scanning of an antenna on a set frequency band in an embodiment;

Figure 4 is a structural block diagram of a storage device in another embodiment;

Figure 5 is a schematic diagram of the structure of the freezer system in an embodiment;

FIG. 6 is a schematic flowchart of an antenna scanning control method in an embodiment;

Fig. 7 is a block diagram of the antenna scanning control device in another embodiment.

Detailed ways

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

Freezers are widely used in many places of production and life, such as supermarkets, production workshops and homes. Freezers are important carrying tools for storage and short-distance transportation of refrigerated products. They can be divided into horizontal freezers and vertical freezers. The traditional freezer is provided with a cabinet with set specifications and a refrigeration control system. The refrigeration control system is used to provide functions such as refrigeration and light control of the cabinet after power-on. To facilitate the description of the content of the present invention, the following takes a horizontal freezer as an example for detailed description.

It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrated with another element, or there may be a centering element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

Freezers are widely used in many places of production and life, such as supermarkets, production workshops and homes. Freezers are important carrying tools for storage and short-distance transportation of refrigerated products. They can be divided into horizontal freezers and vertical freezers. The traditional freezer is provided with a cabinet with set specifications and a refrigeration control system. The refrigeration control system is used to provide functions such as refrigeration and light control of the cabinet after power-on. In order to facilitate the description of the content of the present invention, the following takes the storage device as a horizontal freezer as an example for detailed description. It should be noted that the storage device may also be a container in another closed or semi-closed environment, such as a test cabinet or a storage box.

Please refer to FIG. 1, an embodiment of the present invention provides a storage device 100, which includes a cabinet 12, a partition 14, a supporting board 16, a number of antennas 18 and a number of RFID modules 20. The partitions 14 are structurally connected to the pallets 16 and are located in the cabinet 12. Each RFID module 20 is installed on the cabinet 12. The cabinet 12 includes a bottom plate 122, and any RFID module 20 is communicatively connected to at least one antenna 18. The antennas 18 are respectively arranged on the barrier 14 and the bottom plate 122. Both the bottom plate 122 and the pallet 16 are used to carry various items. The partition 14 is used to separate the items on the pallet 16. Each RFID module 20 works at the same time, and drives the corresponding antenna 18 to perform frequency hopping scans in each set frequency band at a set frequency interval to collect the article information of each article.

It can be understood that in the aforementioned storage device 100, the cabinet body 12 is the carrying structure of the storage device 100, which can be used to carry various items that need to be stored under refrigeration or room temperature, as well as the aforementioned partitions 14, pallets 16, and Each antenna 18 and the RFID module 20 have structures. The aforementioned storage device 100 may also include other components, such as the refrigeration system and lighting equipment of the storage device 100, which are not described in detail in this specification. Various items can be, but are not limited to, food, consumables, or medicines. The items in the display state may be the upper items that the user can directly see in the cabinet 12, and are relative to the bottom items placed on the bottom plate 122. The number of pallets 16 may be one or more. The structural connection between the partition 14 and the support plate 16 may be a detachable connection or an integrated fixed connection.

The RFID module 20 can be fixed on the inner surface of the cabinet 12, such as the surface of the side panel, the surface of the bottom plate 122, or the lower surface of the top cabinet door, or it can be embedded in the cabinet 12, for example, embedded in the interlayer of the body wall of the cabinet 12 Here, the specific location can be determined according to the radio frequency signal returned by the antenna 18 to facilitate the reception. It should be noted that the positions of the RFID module 20 shown in the drawings are only to indicate the communication connection relationship between the RFID module 20 and the antenna 18, and not to limit the actual installation position of the RFID module 20. The aforementioned antennas 18 may be the same type of antenna 18 or different types of antennas 18, as long as the RFID tag can be sensed. The set frequency interval is the frequency interval of antenna frequency hopping, for example, 1 MHz. The set frequency band is the frequency bandwidth of each antenna, such as but not limited to the frequency band of 920MHZ to 923MHZ or the frequency band of 924MHZ to 925MHZ. The frequency range of each set frequency band does not overlap.

Specifically, the items that need to be stored can be (divided into items in the upper display state and items in the lower inventory state) after being affixed with corresponding RFID tags, and placed in each space area of the storage space in the cabinet 12, and placed The storage is performed on the bottom plate 122. Each RFID tag uniquely corresponds to the attached item. The antenna 18 on the partition 14 is driven by the connected RFID module 20 to respectively transmit radio frequency signals to the space areas on both sides to receive the radio frequency signals fed back by the RFID tags of each item on the pallet 16, and transmit them to the corresponding RFID module 20. The RFID module 20 can read the item information corresponding to each item according to the received radio frequency signal, such as item name, production date, category, unit price and other information. During the period, the antenna 18 on the bottom plate 122 can also be driven by the connected RFID module 20 to respectively transmit radio frequency signals to the storage space to receive the radio frequency signals fed back by the RFID tags of each item on the bottom plate 122 and transmit them to the corresponding RFID Module 20. Therefore, the RFID module 20 can obtain the item information of the underlying item more comprehensively.

Each RFID module 20 can be triggered by an external control signal, such as a control signal provided by the operation and maintenance personnel manually or a control signal output by the upper computer, and start to enter the working state, and drive an antenna connected to itself at a set frequency interval. , And perform frequency hopping scans in the respective assigned frequency bands to collect the item information of the items attached to each RFID tag within the coverage of the radio frequency signal. Correspondingly, when the number of antennas 18 connected to each RFID module 20 is more than one, each RFID module 20 can drive each antenna 18 to sweep once in the aforementioned set frequency band during the working process.

In the above-mentioned storage device 100, the antenna 18 is reasonably arranged on the partition 14 and the bottom plate 122 in the storage device, and when the RFID modules 20 work at the same time, the corresponding antenna 18 is driven at a set frequency interval. Frequency hopping scan is performed in the set frequency band. On different set frequency bands, each antenna driven by each RFID module that works at the same time emits radio frequency signals of different frequencies to avoid problems such as weak radio frequency signal coverage of items or low identification accuracy caused by variable orientation of RFID tags. Collect item information of each item efficiently and more accurately. In addition, it can effectively avoid the problem of tag feedback disorder when multiple antennas are transmitted at the same frequency. It effectively solves the problems of large-capacity storage device 100, the antenna 18 is arranged to have large identification blind areas and low recognition accuracy for RFID tags, and the antenna 18 layout structure is greatly simplified, installation is convenient, and the identification blind area is small. Improve the accuracy of the identification of items in the freezer.

In one of the embodiments, the cabinet body 12 further includes a cabinet door, and a first side panel, a second side panel, a third side panel, and a fourth side panel on the peripheral side of the cabinet body 12. Wherein, the cabinet door is a shielded door made of electromagnetic shielding material, for example, it may be a cabinet door made of glass with electromagnetic shielding performance. The first side plate, the second side plate, the third side plate and the fourth side plate may all include two layers of shielding plates and an insulation layer sandwiched between the two layers of shielding plates.

In one of the embodiments, the aforementioned bottom plate 122 may specifically include a shielding plate, an ABS permeable layer, and an insulation layer sandwiched between the shielding plate and the ABS permeable layer. The first side plate, the second side plate, the third side plate, the fourth side plate and the bottom plate 122 constitute the cabinet body 12 and provide storage space for the cabinet body 12 described above. In other words, the shell of the cabinet 12, that is, the first side panel, the second side panel, the third side panel, the fourth side panel, and the bottom panel 122 on the side far away from the storage space constitute the shell, can be It is a shell made of materials with electromagnetic shielding performance, such as but not limited to a metal shell. The inner shell of the cabinet 12, that is, the first side panel, the second side panel, the third side panel, the fourth side panel and the bottom panel 122 on the side close to the storage space. The four sides of the can be made of materials with electromagnetic shielding properties, and the bottom surface can be made of magnetically permeable materials, for example, the bottom surface of ABS material. A thermal insulation material is filled between the outer shell and the inner shell of the cabinet 12 to form a thermal insulation layer. The cabinet 12 with electromagnetic shielding can prevent the leakage of internal electromagnetic waves. The bottom plate 122 of the cabinet 12 uses magnetically permeable materials to ensure that the electromagnetic waves emitted by the antenna 18 installed on the bottom plate 122 can be transmitted to the storage space of the cabinet 12 without hindrance. .

The above-mentioned RFID (Radio Frequency Identification) tags are electronic tags that record certain information based on radio frequency identification technology. Among them, radio frequency identification is a non-contact automatic identification technology that automatically identifies data in RFID tags through radio frequency signals, or writes data like RFID. Radio frequency identification technology can work in various harsh environments without manual intervention. In one example, the RFID tag includes a coupling element and a chip, and the coupling element is electrically connected to the chip. Further, the RFID tag is an active RFID tag, a semi-active RFID tag or a passive RFID tag. Preferably, the RFID tag of the above article adopts a UHF (Ultra High Frequency, ultra high frequency) electronic tag, and the corresponding RFID read-write module adopts an ultra-high frequency RFID read-write module. UHF electronic tags are passive electronic RFID tags. When the RFID reader module is outside the sensing range, the UHF electronic tag is in a passive state. When the RFID reader module is within the sensing range, the UHF electronic tag emits electromagnetic waves from the RFID reader module Extract the power required for work. UHF electronic tags have the characteristics of long recognition distance, high recognition, strong ability to release conflicts, and good scalability, which make refrigerating equipment have good recognition capabilities.

In one of the embodiments, the number of partitions 14 is one or more. At least one antenna 18 is provided on any partition 14. It can be understood that the number of partitions 14 can be one, two or more. The specific number can be flexibly set according to the size and specifications of the cabinet 12 and the number of types of items, as long as it can meet the requirements for the placement of various items. Just need it. An antenna 18 can be arranged on each partition 14 to realize the identification of the RFID tags of the articles on one side or both sides of the partition 14. Two or more antennas 18 may also be provided on each partition 14 to meet the requirement of accurately identifying the RFID tags of items on one side or both sides of the partition 14. The number of antennas 18 installed on the partition 14 can be determined according to the effective radiation coverage of the antenna 18, for example, the number of antennas 18 to be installed can be determined according to the lobe width of the specific type of antenna 18.

In this way, by arranging the partition 14 and flexibly setting the number of antennas 18 on the partition 14, the identification efficiency of the items in the space area on both sides of the partition 14 can be greatly improved, and the antenna 18 on the bottom plate 122 can be matched. Can greatly compress the blind spot of recognition.

In one of the embodiments, the antenna 18 is embedded in the partition 14 or arranged on any side surface of the partition 14, and the radiation direction of the antenna 18 faces the article on the pallet 16. Specifically, the location of the antenna 18 on the partition 14 can be, but not limited to, embedded in the partition 14, for example, in the interlayer inside the partition 14, or on any side surface of the partition 14, the radiation direction of the antenna 18 Toward the direction of the article on the pallet 16, as long as the antenna 18 can effectively transmit radio frequency signals to the space area on either side of the partition 14 or the space area on both sides. Preferably, the radiation direction of the antenna 18 on the partition 14 is parallel to the main plane of the support plate 16, so as to ensure a high recognition efficiency of the RFID tag.

In one of the embodiments, at least two antennas 18 are provided on the bottom plate 122. The antenna 18 on the bottom plate 122 is embedded in the inside of the bottom plate 122. The radiation direction of the antenna 18 faces the objects carried on the bottom plate 122. It can be understood that, in the above embodiment, the number of antennas 18 provided on the bottom plate 122 may be one, two or more than two, and the specific number may be determined according to the size and specifications of the cabinet 12 and the number of items. It can be set flexibly, as long as it can meet the identification needs of various items on the bottom plate 122. In this embodiment, preferably, at least two antennas 18 can be provided on the bottom plate 122, and each antenna 18 can be provided on the surface of the bottom plate 122 close to the ground plane, for example, each antenna 18 on the bottom plate 122 can be attached. On the surface of the bottom plate 122 close to the ground plane, the antennas 18 can be packaged and fixed by setting a cover plate, so that the antennas 18 are isolated from the external environment and prevent the antennas 18 from being exposed. Or, each antenna 18 is embedded in the interlayer of the bottom plate 122. The radiation direction of each antenna 18 on the base plate 122 can be directed toward the article carried on the base plate 122 in a manner that the radiation direction is perpendicular to the main plane of the base plate 122, or it can be an angle between the radiation direction of the antenna 18 and the vertical direction of the main plane of the base plate 122. In this way, toward the objects carried on the bottom plate 122, as long as it can ensure that the radio frequency signal emitted by the antenna 18 can effectively cover the area where the RFID tag on each object is located.

Through the above arrangement of the antenna 18 on the bottom plate 122, the identification efficiency of the items in the cabinet 12 can be further improved, and the identification blind area can be reduced.

2 and 3, in one of the embodiments, any RFID module 20 is communicatively connected to at least two antennas 18, and each antenna 18 sequentially performs frequency hopping scans within a set frequency band.

It can be understood that the number of the aforementioned RFID modules can be two or more than two, and the specific number can be configured according to the number of antennas and the number of antenna ports of each RFID module 20. The following takes two RFID modules 20 as an example for description:

After the two RFID modules 20 enter the working state at the same time, the two antennas 18 working at the same time are independently in their respective set frequency bands, and start frequency hopping scanning from any frequency point. Since the two antennas 18 working at the same time independently perform frequency sweeps in their respective set frequency bands, the aforementioned two antennas 18 respectively emit radio frequency signals of different frequencies at the same time. For example, in the set frequency band of 920 MHz to 923 MHz, the No. 1 antenna 18 is controlled by the first RFID module 20. In the set frequency band 924MHz to 925MHz, the No. 3 antenna 18 is controlled by the second RFID module 20. Then the No. 1 antenna 18 controlled by the first RFID module 20 will randomly start frequency hopping scan from any frequency point between 920MHz and 923MHz; the No. 3 antenna 18 controlled by the second RFID module 20 will be between 924MHz and 925MHz. Frequency hopping scan starts from any frequency point in time, and the two antennas work independently at the same time.

As shown in FIGS. 2 and 3, when the first RFID module 20 and the second RFID module 20 start working simultaneously, the first RFID module 20 works in the set frequency band X and drives the connected antenna 18 to perform frequency hopping scanning. The second RFID module 20 works in the set frequency band Y and drives the connected antenna 18 to perform frequency hopping scanning. The set frequency band X and the set frequency band Y are both in a total frequency band of 920MHz to 925MHz, and the set frequency band X and the set frequency band Y do not overlap. For example, the first RFID module 20 works in the frequency band of 920 MHz to 922 MHz, and the second RFID module 20 can work in any frequency band from 922 MHz to 925 MHz. In this way, the frequencies of the radio frequency signals emitted by the two antennas will remain different. Correspondingly, when there are more than one antenna 18 connected to the two RFID modules 20, the antennas 18 on each RFID module 20 sequentially perform frequency hopping scans within the set frequency bands to which they belong. For more than two RFID modules, the working process of each RFID module 20 is the same as the above understanding.

Through the above-mentioned driving frequency sweep of the antenna 18 by the RFID module 20, each antenna 18 of each RFID module 20 working at the same time can transmit radio frequency signals of different frequencies, effectively avoiding the problem of tag feedback disorder when multiple antennas 18 transmit at the same frequency. , To improve the efficiency and accuracy of reading and writing the RFID tag by the RFID module 20.

Please refer to FIG. 4. In one of the embodiments, the antenna 18 includes a double-sided radiating antenna 18 or a single-sided radiating antenna 18. It can be understood that the radiation direction of the antenna 18 provided on the partition 14 can be set toward the RFID tags carried in the space on both sides of the partition 14 to maximize the efficiency of the antenna 18, for example, the antenna 18 on the partition 14 It is configured as a double-sided radiating antenna 18. In this way, the antennas 18 on each partition 14 can respectively transmit radio frequency signals to the space areas on both sides, and the radio frequency signal coverage areas of each antenna 18 will partially overlap, which can further improve the safety It is ensured that the signal strength in the coverage area of the antenna 18 is uniform, and the accurate identification of each RFID tag is more reliably ensured. The antenna 18 on the partition 14 can also be set as a single-sided radiating antenna 18. In this way, the antennas 18 on each partition 14 can all transmit radio frequency signals toward the space area on the same side, so as to realize the detection of the RFID tags of each item on the pallet 16. Radio frequency coverage and identification, and can reduce the overall cost of the storage device.

The aforementioned antenna 18 is a medium for transmitting and receiving signals between the RFID tag and the RFID reading and writing module. The performance of the antenna 18 can be characterized by the following parameters: gain, bandwidth, input impedance, reflection system, voltage standing wave ratio, incident power/reflected power, lobe width, front-to-back ratio, and polarization characteristics, where gain is used to measure The ability of the antenna 18 to send and receive signals in a specific direction; the bandwidth refers to the frequency within a certain range near the resonance point; the input impedance refers to the ratio of the signal voltage to the signal current at the input of the antenna 18; the reflection coefficient refers to the ratio of the reflected voltage to the incident voltage; The voltage standing wave ratio refers to the ratio of the antinode voltage to the node voltage; the lobe width refers to the two sides of the maximum radiation direction of the main lobe; the angle between the two points where the radiation intensity is reduced by 3dB is used to describe the radiation energy of the antenna 18 The degree of concentration in the direction of the main lobe; the front-to-rear ratio refers to the ratio of the maximum radiation intensity of the main lobe to the back lobe; the polarization characteristic indicates the way in which the electromagnetic wave emitted by the antenna 18 propagates. The antenna 18 is divided according to the polarization mode. The types of the antenna 18 include linear poles. Polarization, circular polarization and elliptical polarization.

In one of the embodiments, preferably, the aforementioned antenna 18 includes a circularly polarized antenna 18 or a linearly polarized antenna 18. It can be understood that the above-mentioned antennas 18 may be circularly polarized antennas 18 or linearly polarized antennas 18, and some of the antennas 18 may be circularly polarized antennas 18, and some of the antennas 18 may be linearly polarized antennas 18. The circularly polarized electromagnetic wave emitted by the circularly polarized antenna 18 is a constant-amplitude rotating field, which can sense the radio frequency signal on the RFID tag of any polarization direction. Therefore, the requirements for the placement direction of the article are relatively low. The circularly polarized antenna 18 can be used. Effectively improve the identification efficiency of RFID tags and reduce the operation and maintenance costs of storage devices.

The linearly polarized antenna 18 has good directivity and low cost. It can be used with a lower-cost passive linearly polarized RFID tag. For example, when the linearly polarized antenna 18 is used, the polarization direction of the linearly polarized antenna 18 can be followed. , To place the items so that the linear polarization direction of the RFID tag on the item is the same as the polarization direction of the linear polarization antenna 18. In this way, higher identification efficiency can be achieved and the operation and maintenance cost of the storage device can be greatly reduced . For another example, if part of the antennas 18 can be circularly polarized antennas 18 and the other part of the antennas 18 are linearly polarized antennas 18, the antennas 18 on each barrier 14 can be circularly polarized antennas 18, and each of the antennas 18 on the bottom plate 122 can be circularly polarized. The antennas 18 all use linear polarization antennas 18, which are matched with passive linear polarization RFID tags, which can reduce the placement requirements of upper-layer items in the cabinet 12, while improving the identification efficiency of items and reducing the operation and maintenance cost of the cabinet 12.

In one of the embodiments, preferably, the above-mentioned antenna 18 is a circularly polarized antenna 18. Specifically, for the antenna 18 on the bottom plate 122, a circularly polarized antenna 18 of 5dbi to 9dbi can be selected for deployment to ensure the recognition rate of the RFID tag. For the antenna 18 on the partition 14, a circularly polarized near-field antenna 18 of 2-4dbi can be selected for deployment. For example, the antenna 18 of the following specifications can be specifically selected: For the antenna 18 on the bottom plate 122, the gain can be 5dbi to 9dbi. The input impedance can be 50Ω. The lobe width can be greater than 70 degrees. The polarization characteristic is circular polarization. The antenna 18 wavelength may be 32.7 cm. For the antenna 18 on the partition 14, the gain can be 2dbi to 4dbi. The input impedance can be 50Ω. The lobe width can be greater than 70 degrees. The polarization characteristic is circular polarization. The antenna 18 wavelength may be 32.7 cm. The specific gain of the antenna 18 can be determined according to the attenuation of the signal in the deployment environment and the number of tags. Through the selection of the specifications of each antenna 18, the coverage area of the radio frequency signal of the antenna 18 can be effectively increased, and the hardware cost can be reduced.

In one of the embodiments, in the cabinet 12, the installation position of each antenna 18 on the partition 14 or the bottom plate 122 is far away from the position of the condenser tube, so as to avoid frost on the condenser tube and damage the antenna 18.

In one of the embodiments, the supporting plate 16 includes a metal supporting plate 16, a plastic supporting plate 16 or a glass supporting plate 16. It is understandable that the aforementioned pallet 16 can be a pallet 16 made of metal, such as aluminum, iron, copper or other metal plates, as long as it can provide the required strength for the load-bearing items and meet the requirements of the entire storage device. The design weight requirements are all available. The pallet 16 may also be a pallet 16 made of plastic material, such as but not limited to a pallet 16 made of high-strength ABS material. The aforementioned pallet 16 may also be a glass pallet 16, such as but not limited to various types of tempered glass pallets 16. By using the pallet 16 made of the above-mentioned material, the structural strength can be taken into consideration, while the flexibility of selection according to the arrangement of the antenna 18 can be improved, and the operation and maintenance cost of the storage device can be reduced.

In one of the embodiments, the supporting plate 16 includes a grid-shaped or hollow supporting plate 16. It can be understood that the aforementioned pallet 16 may be a grid-shaped pallet 16, for example, a pallet 16 formed by an array of distributed holes on the main plane or a pallet 16 whose main plane is formed by ribs. The aforementioned pallet 16 may also be a hollow pallet 16, for example, a pallet 16 designed as a whole hollow or a partial hollow design. By adopting the grid-shaped or hollowed-out pallet 16, the weight of the pallet 16 can be effectively increased while reducing the weight of the pallet 16, thereby reducing the overall weight of the storage device, reducing production costs and use efficiency.

In one of the embodiments, the partition 14 includes a grid-like or hollow non-metal partition 14. Optionally, the aforementioned partitions 14 may also be grid-shaped or hollow-out designs, and are partition plates made of non-metallic materials, such as partition plates made of ABS, tempered glass, organic glass, or other synthetic non-metallic materials. By adopting the grid-shaped or hollowed-out non-metallic partition 14, the weight of the partition 14 can be reduced while the radio frequency signal is effectively transmitted, thereby reducing the weight of the entire storage device, and further reducing the production cost and use efficiency.

In one of the embodiments, the antenna 18 includes a UHF ultra-high frequency antenna 18. The RFID module 20 includes a UHF UHF RFID module 20. In other words, the aforementioned antenna 18 may be, but is not limited to, a UHF ultra-high frequency antenna 18, and the specific model may be selected according to the type of RFID tag, the collection rate of item information, or the environmental conditions inside the cabinet 12. Correspondingly, the RFID module 20 can also be, but is not limited to, a UHF UHF RFID module 20. The specific type can be selected according to the antenna 18 used and design requirements (such as recognition rate, accuracy, power consumption, or cost). By using the aforementioned UHF UHF antenna 18 and UHF UHF RFID module 20, it is possible to improve the collection efficiency of the item information of the stored items and improve the reliability.

In one embodiment, the RFID module 20 includes a single-channel or multi-channel RFID module 20. It can be understood that the aforementioned RFID module 20 may be a single-channel RFID module 20 supporting a single antenna 18, such as a single-antenna 18-port RFID reader. In this way, the corresponding antennas 18 can be driven by multiple RFID modules 20 to realize the identification of items. The RFID module 20 may also be a multi-channel RFID module 20 supporting multiple antennas 18, such as a multi-port RFID reader. In this way, multiple antennas 18 can be matched with a small number of RFID modules 20 such as one or two to realize the identification of items, improve identification efficiency, and reduce operation and maintenance costs.

Referring to FIG. 5, in one embodiment, a freezer system 200 is further provided, including a device interface 21, a management device 23, and the aforementioned storage device 100. The device interface 21 is provided on the cabinet 12 of the storage device 100. The device interface 21 is respectively connected to the RFID module 20 of the storage device 100 and the management device 23. The management device 23 is configured to receive the item information sent by the RFID module 20 through the device interface 21.

It can be understood that the communication interface circuit module of the device interface 21 is used for the communication between the storage device 100 and the management device 23, and may be various conventional network interfaces in the art. The management device 23 is the upper computer of the storage device 100, which can be used to receive the item information reported by each RFID module 20 and display it in real time, interact with users, or perform dispatch control and management to the refrigeration system and lighting equipment in the storage device 100 Wait.

Specifically, the user may input to the management device 23 to instruct the refrigeration system and lighting equipment of the storage device 100 to perform corresponding operations, such as adjusting the cooling power to adjust the internal environment state of the cabinet 12, or switching lighting equipment. After each RFID module 20 recognizes the item information of each item in the cabinet 12 through each antenna 18, it can be sent to the management device 23 through the device interface 21. The management device 23 may then perform item management according to the received item information, for example, the storage status of each item in the display cabinet 12 and the like. The management device 23 may also send an item information collection instruction to each RFID module 20 through the device interface 21, and actively trigger each RFID module 20 to collect item information of each item in real time, so as to perform inventory inventory and tracking management of each item in the cabinet 12.

Through the above-mentioned coordinated design between the management device 23, the device interface 21 and the RFID module 20, the human-computer interaction between the user and the storage device can be directly realized, and the item information in the cabinet 12 can be displayed intuitively, which is convenient for the user. At the same time as item review, item replenishment or purchase decision, etc., combined with the application of the layout of each antenna 18 in the storage device 100, the recognition accuracy of the storage device can be greatly improved, thereby greatly improving the reliability of the freezer system 200.

In one of the embodiments, the management device 23 includes a touch display terminal, a voice control display terminal, or a server. It can be understood that the aforementioned management device 23 may be a touch-operated touch display terminal, such as a tablet computer, a smart interactive tablet, a mobile phone, or other computers with a touch input function. The management device 23 may also be a voice-controlled display terminal, such as an intelligent voice interaction device, and the user may perform control operations on the voice-controlled display terminal by means of voice. By adopting a touch display terminal or a voice control display terminal, the control efficiency is high, and the use efficiency of the storage device is improved. The management device 23 may also be a server, such as a local management server or a cloud management server, through which the server performs linkage supervision, can realize the joint scheduling and management of multiple storage devices in the area, and improve the operation and maintenance efficiency of the freezer system 200.

In one of the embodiments, the device interface 21 includes an RS232 interface, an RJ45 interface, an RS485 interface and/or a USB interface. That is to say, the above-mentioned device interface 21 can be RS232 interface, RJ45 interface, RS485 interface or USB interface, but also can be but not limited to any two or more of RS232 interface, RJ45 interface, RS485 interface and USB interface. Interface group. The specific number of the device interface 21 may be one or multiple, and the specific number may be determined according to the link requirements of the RFID module 20, the management device 23, etc., and the transmission data volume of the item information. When there are multiple device interfaces 21, each device interface 21 can be any one of RS232 interface, RS485 interface, and USB interface, or two or more interfaces according to the type of transmission data. Specifically, for example, the RFID module 20 and the management device 23 may be connected through an RJ45 interface, so as to realize wired communication between the RFID module 20 and the management device 23, and reliably transmit item information upstream. The control instructions issued by the management device 23 can also be transmitted to the refrigeration system and/or lighting equipment connected to the RJ45 interface to implement basic environmental control and other operations. By applying the above-mentioned interface, the communication between the management device 23 and the freezer system 200 can be reliably realized, and the operation and maintenance efficiency of the freezer system 200 can be improved.

In one of the embodiments, the freezer system 200 may also include a two-dimensional code label. The two-dimensional code label is arranged on the outer surface of the storage device and/or the management device 23. The QR code label is used to trigger the display page of the user terminal to jump to the background service number page corresponding to the storage device after being scanned by the user terminal.

It can be understood that the two-dimensional code label may be, but is not limited to, a two-dimensional code label of materials or forms such as paper, plastic, paint film, or metal film. It can be set on the outer surface of the storage device, that is, on the outer surface of the cabinet 12, or on the outer surface of the on-site management device 23, and the specific location can be set according to easy discovery by the user and scan code using the user terminal. The user terminal can be, but is not limited to, terminal devices such as mobile phones and tablet computers. The background service number is an online service platform corresponding to the pre-opened storage device 100, such as a WeChat official account, an Alipay service account, a UnionPay service account, or other platform service accounts.

Specifically, the user can scan the aforementioned QR code label through the user terminal and enter the background service number corresponding to the storage device 100, so that the user can use the user terminal to perform member registration, item browsing, purchase and payment, and payment in the background service number. Evaluation feedback, point management, item or store sharing and other operations. Through the above-mentioned setting of the two-dimensional code label, the use efficiency of the freezer system can be further improved, and the user experience can be optimized.

In one of the embodiments, the aforementioned storage device management equipment 2318 may also be used to display the two-dimensional code corresponding to the aforementioned two-dimensional code label. The two-dimensional code displayed by the storage device management device 2318 for the user to quickly scan and enter the service number can also effectively improve the use efficiency of the freezer system 200 and further improve the user experience.

Referring to FIG. 6, in an embodiment, an antenna scanning control method is provided, which is applied to the storage device 100 described above, and includes the following step S12:

S12: Send a control signal to each RFID module 20 respectively. Among them, the control signal is used to instruct each RFID module 20 to drive the corresponding antenna 18 to perform frequency hopping scanning in each set frequency band at a set frequency interval, and to collect article information of each article.

Specifically, after the control system of the host computer or the storage device, for example, the industrial controller of the freezer sends a control signal to the first RFID module 20, the control signal may be, but is not limited to, a timing level signal. When each RFID module 20 starts working at the same time, it drives one of its connected antennas at a set frequency interval, and performs frequency hopping scans in the set frequency bands allocated to each to collect all RFID tag locations within the coverage of radio frequency signals. The item information of the attached item. Correspondingly, when the number of antennas 18 connected to each RFID module 20 is more than one, each RFID module 20 can drive each antenna 18 to sweep once in the aforementioned set frequency band during the working process. Each RFID module 20 can also start the current round of frequency sweeping work from the first antenna 18 put into operation in the previous round after traversing each antenna and putting it into work. This cycle can realize the real-time collection and update of item information. .

Through the above-mentioned antenna scanning control method, when the RFID modules 20 work at the same time, each RFID module 20 drives the corresponding antenna 18 to perform frequency hopping scanning within the set frequency band at a set frequency interval. On different set frequency bands, each antenna driven by each RFID module that works at the same time emits radio frequency signals of different frequencies to avoid problems such as weak radio frequency signal coverage of items or low identification accuracy caused by variable orientation of RFID tags. Collect item information of each item efficiently and more accurately.

Referring to FIG. 7, in one embodiment, an antenna scanning control device 300 is provided, which includes a signal sending module 302 for sending control signals to each RFID module 20 respectively. Among them, the control signal is used to instruct each RFID module 20 to drive the corresponding antenna 18 to perform frequency hopping scanning in each set frequency band at a set frequency interval, and to collect article information of each article.

Through the above-mentioned antenna scanning control device 300, when each RFID module 20 is controlled to start working at the same time, each RFID module 20 drives the corresponding antenna 18 to perform frequency hopping scanning within the set frequency interval at a set frequency interval. On different set frequency bands, each antenna driven by each RFID module that works at the same time emits radio frequency signals of different frequencies to avoid problems such as weak radio frequency signal coverage of items or low identification accuracy caused by variable orientation of RFID tags. Collect item information of each item efficiently and more accurately.

In one embodiment, a computer-readable storage medium is also provided, and a computer program is stored thereon, and the computer program is executed by a processor to realize the steps of the antenna scanning control method described above.

A person of ordinary skill in the art can understand that all or part of the procedures in the antenna scanning control method of the foregoing embodiments can be implemented by instructing relevant hardware through a computer program. The foregoing computer program may be stored in a non-volatile computer. When the computer program is executed in the read storage medium, it may include the step flow of each embodiment of the antenna scanning control method described above. Wherein, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and/or volatile memory. Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered as the range described in this specification.

The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A storage device, characterized in that it comprises a cabinet, a pallet, a partition, a plurality of antennas, and a plurality of RFID modules. The partition structure is connected to the pallet and is located in the cabinet, and each of the RFID modules Are all set on the cabinet;

The cabinet body includes a bottom plate, any one of the RFID modules is communicatively connected to at least one of the antennas, and each of the antennas is respectively arranged on the partition and the bottom plate;

The bottom plate and the pallet are both used to carry each of the articles, and the partition is used to separate each of the articles on the pallet;

Each of the RFID modules works at the same time and each at a set frequency interval, drives the corresponding antenna to perform frequency hopping scans in each set frequency band, and collects the item information of each of the items.
The storage device according to claim 1, wherein any one of the RFID modules is communicatively connected to at least two of the antennas, and each of the antennas sequentially performs frequency hopping scanning in the corresponding set frequency band.
The storage device according to claim 1, wherein the number of the partitions is one or more, and at least one of the antennas is provided on any of the partitions.
The storage device according to claim 3, wherein the antenna is embedded in the partition or arranged on any side surface of the partition, and the radiation direction of the antenna faces the holder The items on the board.
The storage device according to any one of claims 1 to 4, wherein the antenna comprises a double-sided radiating antenna or a single-sided radiating antenna.
The storage device according to claim 5, wherein at least two antennas are provided on the bottom plate, and each of the antennas on the bottom plate is located inside the bottom plate and has a radiation direction toward the bottom plate. Each of the items carried on the bottom plate.
The storage device according to claim 1, wherein the antenna comprises a circularly polarized antenna or a linearly polarized antenna.
The storage device according to claim 1 or 2, wherein the RFID module comprises a single-channel or multi-channel RFID module.
An antenna scanning control method, applied to the storage device according to any one of claims 1 to 8, characterized in that it comprises:

Send a control signal to each RFID module respectively; wherein, the control signal is used to instruct each of the RFID modules to drive the corresponding antenna to perform frequency hopping scanning in each set frequency band at a set frequency interval, and to collect each of the items Item information.
An antenna scanning control device, characterized in that it comprises:

The signal sending module is used to send a control signal to each RFID module respectively; wherein the control signal is used to instruct each of the RFID modules to drive the corresponding antenna to perform frequency hopping scanning in each set frequency interval at a set frequency interval. , Collect the item information of each said item.
A computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the antenna scanning control method according to claim 9 when the computer program is executed by a processor.
A freezer system, comprising a device interface, a management device, and the storage device according to any one of claims 1 to 8. The device interface is provided on a cabinet of the storage device, and the device The interface is respectively connected to the RFID module and the management device of the storage device, and the management device is configured to receive the item information sent by the RFID module through the device interface.
The freezer system according to claim 12, wherein the device interface comprises an RS232 interface, an RJ45 interface, an RS485 interface and/or a USB interface.
The freezer system according to claim 12, further comprising a two-dimensional code label disposed on the outer surface of the storage device and/or the management device, the two-dimensional code label It is used to trigger the display page of the user terminal to jump to the service number page corresponding to the storage device after being scanned by the user terminal.