Base strip label, base strip and electronic price tag system

Abstract

The invention relates to the technical field of electronic price tags, and discloses a base strip tag, a base strip and an electronic price tag system.The base strip tag comprises a plurality of positioning antennas and a tag chip, and the tag chip comprises an analog front end module, a storage module, a digital baseband and a plurality of sets of input and output pins in one-to-one correspondence with the positioning antennas; the analog front-end module comprises a multi-antenna power supply management unit, a public power supply and a transceiving unit, and the storage module stores configuration information in one-to-one correspondence with a plurality of positioning antennas; one ends of the multiple groups of input and output pins are respectively connected with the corresponding positioning antennas, and the other ends of the multiple groups of input and output pins are connected with the public power supply through the multi-antenna power supply management unit; the other ends of the multiple groups of input / output pins are also connected with the digital baseband through the transceiving unit; and the digital baseband is connected with the storage module. According to the invention, the plurality of positioning antennas are connected to one tag chip, and the multi-antenna function module in the tag chip is multiplexed, so that the occupied area of the tag chip can be reduced, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic price tag technology, specifically to a base label, a base label, and an electronic price tag system. Background Technology

[0002] Electronic Shelf Label (ESL) systems, also known as electronic price tag systems, are digital display devices that replace traditional paper price tags. ESL systems interact with NFC tag chips located in the shelf base bars through a built-in Near Field Communication (NFC) reader chip, enabling real-time synchronization of data such as product price, name, promotional information, and inventory status.

[0003] Currently, multiple NFC positioning antennas are installed in the shelf base bars, with each antenna corresponding to a tag chip and a shelf location. By reading the unique identification number (UID) of the corresponding tag chip through a reader chip, it can be automatically bound to the product information of that shelf location in the back-end system. However, this method of one tag chip per NFC positioning antenna occupies a large amount of space and is costly. Summary of the Invention

[0004] This invention provides a base label, a base label, and an electronic price tag system to solve the problems of large space occupation and high cost of tag chips.

[0005] In a first aspect, the present invention provides a base tag, which includes multiple positioning antennas and a tag chip. The tag chip includes an analog front-end module, a storage module, a digital baseband, and multiple sets of input / output pins, each set of input / output pins corresponding to one of the multiple positioning antennas. The analog front-end module includes a multi-antenna power management unit, a common power supply, and a transceiver unit. The storage module stores configuration information corresponding to each of the multiple positioning antennas. One end of each set of input / output pins is connected to a corresponding positioning antenna, and the other end of each set of input / output pins is connected to a common power supply through the multi-antenna power management unit. The multi-antenna power management unit is used to connect the target positioning antenna to the common power supply so that the common power supply powers the digital baseband and the storage module. The target positioning antenna is one of the multiple positioning antennas that is activated. The other end of each set of input / output pins is also connected to the digital baseband through the transceiver unit, and the digital baseband is connected to the storage module.

[0006] This invention provides a base strip tag that, through the cooperation of multiple sets of input / output pins corresponding one-to-one with multiple positioning antennas, an analog front-end module containing a multi-antenna power management unit, a digital baseband, and a storage module, allows multiple positioning antennas to be connected to a single tag chip without changing the original function of the base strip tag. By reusing the multi-antenna functional modules within the chip, the area occupied by the tag chip is reduced, thus lowering the cost.

[0007] In one optional implementation, the transceiver unit includes multiple receiving units and multiple transmitting units. Each receiving unit corresponds to one of the multiple positioning antennas, and each transmitting unit corresponds to one of the multiple positioning antennas. One end of each receiving unit is connected to the input / output pin of the corresponding positioning antenna, and the other end of each receiving unit is connected to a digital baseband. One end of each transmitting unit is connected to the input / output pin of the corresponding positioning antenna, and the other end of each transmitting unit is connected to a digital baseband.

[0008] In this embodiment, the receiving and transmitting units of the positioning antenna are independent, while other parts are shared. Each positioning antenna has its own dedicated receiving and transmitting units, achieving physical-level link separation. This eliminates interference between multiple positioning antennas, optimizes signal quality, reduces the bit error rate, and allows the digital baseband to quickly locate the source of the radio frequency signal, reducing communication latency. Furthermore, because the transceiver unit is smaller in area compared to other modules, the area occupied by the independent receiving and transmitting units is negligible, still reducing the footprint of the tag chip and lowering costs.

[0009] In one optional implementation, the analog front-end module further includes a multi-antenna selection circuit. The transceiver unit includes a receiving unit and multiple transmitting units, each corresponding to a different positioning antenna. One end of each transmitting unit is connected to the input / output pin of the corresponding positioning antenna, and the other end of each transmitting unit is connected to a digital baseband. One end of the receiving unit is connected to multiple sets of input / output pins via the multi-antenna selection circuit, and the other end of the receiving unit is connected to the digital baseband. The digital baseband is connected to the multi-antenna selection circuit and is used to determine the target positioning antenna from the multiple positioning antennas, as well as to control the multi-antenna selection circuit to connect the target positioning antenna and the receiving unit.

[0010] In one optional implementation, the analog front-end module further includes a multi-antenna selection circuit. The transceiver unit includes multiple receiving units and one transmitting unit. The multiple receiving units correspond one-to-one with multiple positioning antennas. One end of each of the multiple receiving units is connected to the input / output pins of the corresponding positioning antenna, and the other end of each of the multiple receiving units is connected to a digital baseband. One end of the transmitting unit is connected to multiple sets of input / output pins through the multi-antenna selection circuit, and the other end of the transmitting unit is connected to the digital baseband. The digital baseband is connected to the multi-antenna selection circuit. The digital baseband is used to determine the target positioning antenna from the multiple positioning antennas and to control the multi-antenna selection circuit to connect the target positioning antenna and the transmitting unit.

[0011] In one optional implementation, the analog front-end module further includes a multi-antenna selection circuit. The transceiver unit includes a receiving unit and a transmitting unit. One end of the receiving unit is connected to multiple sets of input / output pins through the multi-antenna selection circuit, and the other end of the receiving unit is connected to a digital baseband. One end of the transmitting unit is connected to multiple sets of input / output pins through the multi-antenna selection circuit, and the other end of the transmitting unit is connected to the digital baseband. The digital baseband is connected to the multi-antenna selection circuit and is used to determine the target positioning antenna from multiple positioning antennas, and to control the multi-antenna selection circuit to connect the target positioning antenna and the receiving unit, or to control the multi-antenna selection circuit to connect the target positioning antenna and the transmitting unit.

[0012] In one alternative implementation, a plurality of positioning antennas are spaced apart in the horizontal direction, and any two adjacent positioning antennas are equally spaced in the horizontal direction.

[0013] In one alternative implementation, the horizontal spacing between two adjacent positioning antennas is greater than or equal to 3 mm.

[0014] In one alternative implementation, the tag chip is located in a housing space inside a first positioning antenna, which is the positioning antenna that is closest to the outside in the horizontal direction among a plurality of positioning antennas.

[0015] In one alternative implementation, multiple positioning antennas are disposed on the front side of the substrate, the tag chip is disposed on the back side of the substrate, and the connection line between the tag chip and the multiple positioning antennas is located on the back side of the substrate.

[0016] In one alternative implementation, the tag chip is located between the first positioning antenna and the second positioning antenna. The first positioning antenna is the outermost positioning antenna in the horizontal direction among a plurality of positioning antennas, and the second positioning antenna is the positioning antenna that is adjacent to the first positioning antenna in the horizontal direction among a plurality of positioning antennas.

[0017] In one alternative implementation, the first positioning antenna is an irregularly shaped structure with an opening that faces the second positioning antenna in the horizontal direction, and the tag chip is located inside the opening.

[0018] In one alternative implementation, the storage module includes non-volatile memory.

[0019] In one alternative embodiment, the positioning antenna is prepared by an etching process or by a winding process.

[0020] In one optional embodiment, the plurality of positioning antennas consist of a plurality of third positioning antennas and a plurality of fourth positioning antennas, wherein the plurality of third positioning antennas are spaced apart in the horizontal direction and the plurality of fourth positioning antennas are spaced apart in the vertical direction.

[0021] In one optional embodiment, the multiple positioning antennas consist of multiple third positioning antennas, multiple fourth positioning antennas, and multiple fifth positioning antennas. The multiple third positioning antennas are spaced apart in the horizontal direction, the multiple fourth positioning antennas are spaced apart in the vertical direction, and the multiple fifth positioning antennas are spaced apart in the height direction.

[0022] In a second aspect, the present invention provides a base strip, which includes a substrate and a plurality of base strip labels as described in the first aspect or any of the corresponding embodiments, wherein the plurality of base strip labels are spaced apart along the extension direction of the substrate.

[0023] In one optional implementation, the first spacing and the second spacing are equal, the first spacing being the distance between two positioning antennas of two adjacent base strip tags that are close to each other, and the second spacing being the distance between two adjacent positioning antennas within the base strip tag.

[0024] Thirdly, the present invention provides an electronic price tag system, which includes at least one base strip, an electronic price tag, an access point, and a server; the base strip includes a substrate and a plurality of base strip labels as described in the first aspect or any corresponding embodiment thereof, the plurality of base strip labels being spaced apart along the extension direction of the substrate; the electronic price tag is installed above the base strip and configured to periodically communicate with at least one positioning antenna and read corresponding configuration information; the server is configured to communicate with the electronic price tag through the access point and determine the position of the electronic price tag according to the corresponding configuration information. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram illustrating an application scenario of the base strip label according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a first type of base strip label according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a second type of base label according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a third type of base strip label according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the fourth type of base strip label according to an embodiment of the present invention; Figure 6 This is a structural schematic diagram of the fifth type of base strip label according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the sixth type of base strip label according to an embodiment of the present invention; Figure 8 This is a schematic diagram of a first arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 9 This is a schematic diagram of a second arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 10 This is a schematic diagram of a third arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 11 This is a schematic diagram of a fourth arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 12 This is a schematic diagram of a fifth arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 13 This is a schematic diagram of a sixth arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 14 This is a schematic diagram of a seventh arrangement of multiple positioning antennas according to an embodiment of the present invention; Figure 15 This is a schematic diagram showing the placement of the connecting lines when the tag chip is located on the reverse side of the substrate according to an embodiment of the present invention; Figure 16 This is a schematic diagram illustrating the connection relationship between two positioning antennas and a tag chip according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the pin positions of a first type of tag chip according to an embodiment of the present invention; Figure 18 This is a dimensional diagram of a first type of tag chip according to an embodiment of the present invention; Figure 19 This is a dimension drawing of the first type of solder pad according to an embodiment of the present invention; Figure 20 This is a schematic diagram showing the positional relationship between the first protrusion and the second protrusion according to an embodiment of the present invention. Figure 21 This is a schematic diagram illustrating another connection relationship between the two positioning antennas and the tag chip according to an embodiment of the present invention; Figure 22 This is a schematic diagram of the wiring of a tag chip located on the back of a substrate according to an embodiment of the present invention; Figure 23 This is a schematic diagram showing the connection relationship between the three positioning antennas and the tag chip according to an embodiment of the present invention; Figure 24 This is a schematic diagram of the pin positions of a second type of tag chip according to an embodiment of the present invention; Figure 25 This is a dimensional diagram of the second type of tag chip according to an embodiment of the present invention; Figure 26 This is a dimension drawing of the second type of solder pad according to an embodiment of the present invention; Figure 27 This is a schematic diagram illustrating another connection relationship between the three positioning antennas and the tag chip according to an embodiment of the present invention; Figure 28 This is another schematic diagram of the routing of a tag chip located on the back side of a substrate according to an embodiment of the present invention; Figure 29 This is a schematic diagram illustrating the connection relationship between four positioning antennas and a tag chip according to an embodiment of the present invention; Figure 30 This is a schematic diagram of the pin positions of a third type of tag chip according to an embodiment of the present invention; Figure 31 This is a dimension diagram of the third type of tag chip according to an embodiment of the present invention; Figure 32 This is a dimension drawing of the third type of solder pad according to an embodiment of the present invention; Figure 33 This is a schematic diagram showing the positional relationship between the first protrusion and the second protrusion according to a third embodiment of the present invention; Figure 34 This is a schematic diagram illustrating the connection relationship between four positioning antennas and a tag chip according to another embodiment of the present invention; Figure 35 This is a schematic diagram of the pin positions of a fourth type of tag chip according to an embodiment of the present invention; Figure 36 This is a dimension diagram of the fourth type of tag chip according to an embodiment of the present invention; Figure 37 This is a dimension diagram of the fourth type of solder pad according to an embodiment of the present invention; Figure 38 This is a schematic diagram showing the positional relationship between the first protrusion and the second protrusion according to a fourth embodiment of the present invention; Figure 39 This is a schematic diagram of a base strip according to an embodiment of the present invention; Figure 40 This is a schematic diagram of an electronic price tag system according to an embodiment of the present invention.

[0027] Attached reference numerals: 10, shelf; 11, base strip; 20, base strip label; 30, display screen; 40, merchandise; 50, electronic shelf label; 60, access point; 70, server; 111. Substrate; 21. Positioning antenna; 22. Tag chip; 221. Input / output pins; 222. Analog front-end module; 2221. Multi-antenna power management unit; 2222. Common power supply; 2223. Transceiver unit; 2224. Multi-antenna selection circuit; 2225. Common clock module; 223. Digital baseband; 224. Storage module; 225. Second bump; 23. Pad; 231. First bump. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Electronic shelf label (ESL) systems use wireless technology to communicate with a central hub to form a dynamic pricing automation network, primarily used in supermarkets, convenience stores, pharmacies, and other scenarios that require displaying price information.

[0030] An ESL system mainly consists of two parts: a backend server and access point (AP) that acts as the administrator and information control center. The access point device can be a computer, smartphone, or multi-standard NFC reader chip. The other part serves as the managed information display terminal, which can include a display screen and a base tag. The base tag typically includes an NFC positioning antenna and an NFC tag chip connected to the antenna. The access point device is responsible for initiating connections with the base tag, discovering the base tag's capabilities, and configuring the information displayed on the screen.

[0031] like Figure 1As shown, each shelf 10 has a base strip 11 at its bottom, with multiple base strip labels 20 closely arranged inside the base strip 11. A display screen 30 is installed on the base strip 11. The positioning antennas in the base strip labels 20 can locate the goods 40 on the shelf 10, and the display screen 30 displays information such as the price and name of the goods. Currently, each positioning antenna corresponds to a tag chip, which occupies a large area and has a high cost.

[0032] In view of this, the present invention provides a base strip label, a base strip and an electronic price tag system. The base strip label connects multiple positioning antennas to a tag chip. The multiple antenna functional modules within the tag chip are reused, which can reduce the area occupied by the tag chip and reduce costs.

[0033] The base strip label provided by the present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 2 As shown, the base tag 20 provided according to an embodiment of the present invention includes multiple positioning antennas 21 and a tag chip 22. The tag chip 22 includes multiple sets of input / output pins 221, an analog front end (AFE) module 222, a digital baseband 223 and a storage module 224. The multiple sets of input / output pins 221 correspond one-to-one with the multiple positioning antennas 21. The analog front end module 222 includes a multi-antenna power management unit 2221, a common power supply 2222 and a transceiver unit 2223. The storage module 224 stores configuration information corresponding one-to-one with the multiple positioning antennas 21. The multiple positioning antennas 21 can share the AFE module 222, the digital baseband 223 and the storage module 224.

[0035] Configuration information may include communication parameter configuration information and location mapping information. Communication parameter configuration signals may include radio frequency parameters (such as the operating frequency of the positioning antenna (13.56MHz), modulation method and communication rate, etc.) and power consumption parameters. Location mapping information may be a mapping table of positioning antenna, shelf physical location and product information. Product information may include product name, price and promotional information, etc.

[0036] Figure 2 Taking a base tag 20 containing N positioning antennas (positioning antenna 1, positioning antenna 2, ..., positioning antenna N-1 and positioning antenna N) as an example, where N is an integer greater than or equal to 2. Positioning antenna 21 can be an NFC positioning antenna or other wireless communication positioning antenna, and tag chip 22 can be an NFC tag chip, for example, an NFC 15693 Tag chip.

[0037] Specifically, one end of each of the multiple sets of input / output pins 221 is connected to the corresponding positioning antenna 21, and the other end of the multiple sets of input / output pins 221 is connected to the common power supply 2222 through the multi-antenna power management unit 2221. The multi-antenna power management unit 2221 is used to connect the target positioning antenna to the common power supply 2222 so that the common power supply 2222 can supply power to the digital baseband 223 and the storage module 224. The target positioning antenna is one of the multiple positioning antennas 21 that is activated. The other end of the multiple sets of input / output pins 221 is also connected to the digital baseband 223 through the transceiver unit 2223. The digital baseband 223 is connected to the storage module 224.

[0038] In one embodiment of the present invention, the structure of the digital baseband 223 can be the same as that of the digital baseband in a conventional tag chip. The storage module 224 may include non-volatile memory (NVM), which can be electrically erasable programmable read-only memory (EEPROM). The storage module 224 also stores a serial number (SN), which is the unique identifier (UID) of the tag chip. The SN enables precise binding between the physical location of the shelf, the product, and the base tag.

[0039] Most of the units in the AFE module of this embodiment of the invention (such as the common power supply and common clock module) are the same as those in the AFE module of a conventional tag chip. The AFE module of this embodiment of the invention adds a multi-antenna power management unit 2221. One end of the multi-antenna power management unit 2221 is connected to multiple positioning antennas 21 through multiple sets of input and output pins 221, and the other end of the multi-antenna power management unit 2221 is connected to the common power supply 2222.

[0040] When none of the multiple positioning antennas are activated by the NFC Reader chip, the multi-antenna power management unit 2221 keeps each positioning antenna 21 in a powered-off state with the common power supply 2222. When at least one positioning antenna is activated by the NFC Reader chip, the multi-antenna power management unit 2221 automatically connects one of the positioning antennas 21 (i.e., the target positioning antenna) to the common power supply 2222, transferring the energy of the radio frequency signal received by the target positioning antenna to the common power supply 2222. The common power supply 2222 converts the energy into a voltage compatible with the digital baseband to power the digital baseband, and also converts the energy into a voltage compatible with the storage module to power the storage module. It should be understood that the common power supply 2222 can also power other modules in the tag chip that require power.

[0041] This invention does not impose specific limitations on the circuit structure of the multi-antenna power management unit 2221, as long as it can select the target positioning antenna (such as the positioning antenna with the strongest energy) and connect it to the common power supply 2222 in a multi-antenna scenario. For example, the multi-antenna power management unit 2221 includes multiple switching transistors arranged in parallel, with each switching transistor corresponding to one of the multiple positioning antennas. The switching transistors can be metal-oxide-semiconductor field-effect transistors (MOS transistors).

[0042] When it is necessary to confirm or modify the configuration information corresponding to a certain positioning antenna (denoted as the target positioning antenna), the Reader chip that transmits radio frequency signals is brought close to the target positioning antenna to activate the target positioning antenna. The target positioning antenna receives the radio frequency signal transmitted by the NFCReader chip. When the radio frequency signal is transmitted to the multi-antenna power management unit 2221, the multi-antenna power management unit 2221 connects the target positioning antenna and the common power supply 2222. The common power supply 2222 uses the energy generated by the radio frequency signal to power the digital baseband 223 and the storage module 224.

[0043] Meanwhile, the radio frequency signal is transmitted to the digital baseband 223 through the transceiver unit 2223. The digital baseband 223 is used to demodulate the received radio frequency signal, extract the task instructions, and process the configuration information corresponding to the target positioning antenna according to the task instructions. For example, it can read the configuration information from the storage module 224 or modify the configuration information in the storage module 224.

[0044] After reading the configuration information from the storage module 224, the digital baseband 223 is also used to modulate the read configuration information. The modulated configuration information is transmitted to the target positioning antenna through the transceiver unit, and the target positioning antenna sends the signal carrying the configuration information to the Reader chip.

[0045] It should be noted that during the transmission of the above signals, the analog front-end module 222 also performs preprocessing on the received radio frequency signals, such as electrostatic protection, rectification, current leakage and voltage limiting.

[0046] According to an embodiment of the present invention, the base tag can connect multiple positioning antennas to a single tag chip without changing the original function of the base tag by means of the cooperation between multiple sets of input / output pins 221 corresponding one-to-one with multiple positioning antennas 21, an analog front-end module 222 including a multi-antenna power management unit 2221, a digital baseband 223 and a storage module 224. By reusing the multi-antenna function modules within the chip, the area occupied by the tag chip is reduced, thus reducing the cost.

[0047] Specifically, multiplexed modules such as public power supply, digital baseband and storage modules occupy 70% of the original tag chip, which can greatly reduce the chip area after reuse.

[0048] Because a single tag chip connects to multiple positioning antennas, the transceiver unit 2223 of the analog front-end module 222 in this embodiment of the invention differs from the transceiver unit in a conventional analog front-end module. The transceiver unit 2223 provided in this embodiment can be structured in four ways: each positioning antenna has independent receiving and transmitting units; each positioning antenna has independent transmitting units and multiplexed receiving units; each positioning antenna has multiplexed transmitting units and independent receiving units; and each positioning antenna has multiplexed receiving and transmitting units. The structure of the transceiver unit 2223 will be described below with reference to the accompanying drawings.

[0049] In some embodiments, such as Figure 3 As shown, the transceiver unit 2223 includes multiple receiving units (receiving unit 1, receiving unit 2, ..., receiving unit N-1 and receiving unit N) and multiple transmitting units (transmitting unit 1, transmitting unit 2, ..., transmitting unit N-1 and transmitting unit N). The multiple receiving units correspond one-to-one with the multiple positioning antennas, and the multiple transmitting units correspond one-to-one with the multiple positioning antennas.

[0050] Specifically, one end of each of the multiple receiving units is connected to the input / output pin of the corresponding positioning antenna, and the other end of each of the multiple receiving units is connected to the digital baseband 223; one end of each of the multiple transmitting units is connected to the input / output pin of the corresponding positioning antenna, and the other end of each of the multiple transmitting units is connected to the digital baseband 223.

[0051] It should be noted that the digital baseband 223 can determine the target positioning antenna through the receiving unit that transmits radio frequency signals. For example, if the received radio frequency signal comes from receiving unit 1, then the target positioning antenna is the positioning antenna 1 corresponding to receiving unit 1, and the digital baseband 223 transmits data to the target positioning antenna through the transmitting unit 2 corresponding to the target positioning antenna; if the received radio frequency signal comes from receiving unit N, then the target positioning antenna is the positioning antenna N corresponding to receiving unit N.

[0052] In this embodiment, the receiving and transmitting units of the positioning antenna are independent, while other parts are shared. Each positioning antenna has its own dedicated receiving and transmitting units, achieving physical-level link separation. This eliminates interference between multiple positioning antennas, optimizes signal quality, reduces the bit error rate, and allows the digital baseband to quickly locate the source of the radio frequency signal, reducing communication latency. Furthermore, because the transceiver unit is smaller in area compared to other modules, the area occupied by the independent receiving and transmitting units is negligible, still reducing the footprint of the tag chip and lowering costs.

[0053] In some embodiments, such as Figure 4 As shown, the analog front-end module 222 also includes a multi-antenna selection circuit 2224, and the transceiver unit 2223 includes a receiving unit and multiple transmitting units, with each of the multiple transmitting units corresponding to a multiple positioning antenna.

[0054] Specifically, one end of each of the multiple transmitting units is connected to the input / output pins of the corresponding positioning antenna, and the other end of each of the multiple transmitting units is connected to the digital baseband 223; one end of the receiving unit is connected to multiple sets of input / output pins through the multi-antenna selection circuit 2224, and the other end of the receiving unit is connected to the digital baseband 223, which is connected to the multi-antenna selection circuit 2224.

[0055] The digital baseband 223 is used to determine the target positioning antenna from multiple positioning antennas and to control the multi-antenna selection circuit 2224 to connect the target positioning antenna and the receiving unit. The analog front-end module 222 includes an antenna activation detection circuit. The digital baseband 223 can determine the activated positioning antenna from the multiple positioning antennas through the antenna activation detection circuit. If only one positioning antenna is activated, then that positioning antenna is the target positioning antenna; if multiple positioning antennas are activated, the digital baseband 223 can determine the positioning antenna with the strongest signal strength among the multiple activated positioning antennas as the target positioning antenna. The digital baseband 223 can also use an anti-collision algorithm to determine the target positioning antenna from the multiple activated positioning antennas and time-division multiplex the receiving unit.

[0056] For example, the multi-antenna selection circuit 2224 can be composed of multiple switching transistors corresponding one-to-one with multiple positioning antennas. In the initial state, the multiple switching transistors are in the off state. After the digital baseband 223 determines the target positioning antenna, it can control the switching transistors corresponding to the target positioning antenna to turn on, so that the multi-antenna selection circuit 2224 connects the target positioning antenna and the receiving unit.

[0057] In this embodiment, the transmitting unit of the positioning antenna is independent, while other parts are reused and shared, reducing the chip's footprint.

[0058] In some embodiments, such as Figure 5 As shown, the analog front-end module 222 also includes a multi-antenna selection circuit 2224, and the transceiver unit 2223 includes multiple receiving units and one transmitting unit, with each receiving unit corresponding to a multiple positioning antenna.

[0059] Specifically, one end of each of the multiple receiving units is connected to the input / output pins of the corresponding positioning antenna, and the other end of each of the multiple receiving units is connected to the digital baseband 223; one end of the transmitting unit is connected to multiple sets of input / output pins through the multi-antenna selection circuit 2224, and the other end of the transmitting unit is connected to the digital baseband 223, which is connected to the multi-antenna selection circuit 2224.

[0060] The digital baseband 223 is used to determine the target positioning antenna from multiple positioning antennas and to control the multi-antenna selection circuit 2224 to connect the target positioning antenna and the transmitting unit. The digital baseband 223 can determine the target positioning antenna from multiple positioning antennas through the receiving unit that transmits radio frequency signals, and then control the multi-antenna selection circuit 2224 to connect the target positioning antenna and the transmitting unit, so that the transmitting unit can transmit the modulated signal to the target positioning antenna.

[0061] When there are multiple target positioning antennas, the digital baseband can sequentially control the multi-antenna selection circuit 2224 to connect different target positioning antennas and transmitting units, and transmit data to different target positioning antennas sequentially through time-division multiplexing of the transmitting unit.

[0062] In this embodiment, the receiving unit of the positioning antenna is independent, while other parts are reused and shared, reducing the chip's footprint.

[0063] In some embodiments, such as Figure 6 As shown, the analog front-end module 222 also includes a multi-antenna selection circuit 2224, and the transceiver unit includes a receiving unit and a transmitting unit.

[0064] Specifically, one end of the receiving unit is connected to multiple sets of input / output pins through a multi-antenna selection circuit, and the other end of the receiving unit is connected to a digital baseband 223; one end of the transmitting unit is connected to multiple sets of input / output pins through a multi-antenna selection circuit, and the other end of the transmitting unit is connected to a digital baseband 223.

[0065] The digital baseband 223 is connected to a multi-antenna selection circuit. The digital baseband is used to determine the target positioning antenna from multiple positioning antennas, and to control the multi-antenna selection circuit to connect the target positioning antenna and the receiving unit, or to control the multi-antenna selection circuit to connect the target positioning antenna and the transmitting unit.

[0066] In this embodiment, the receiving unit, transmitting unit, and other modules of the positioning antenna are reused, which can further reduce the area occupied by the chip.

[0067] For example, such as Figures 3 to 6 As shown, the analog front-end module 222 also includes a common clock module 2225 and a local clock oscillator (not shown in the figure).

[0068] Specifically, the local oscillator (LO) is used to generate a local clock, which is a local oscillation signal that provides a clock reference for demodulation in the digital baseband 223. The local oscillation signal can be a 3MHz to 30MHz local oscillation signal with a power consumption of less than 10µW.

[0069] Both the common clock module 2225 and the local clock oscillator are connected to the digital baseband 223. The common clock module 2225 is used to extract the clock signal from the radio frequency signal received by the target positioning antenna, and the digital baseband 223 is used to demodulate the radio frequency signal according to the recovered clock signal and the local clock.

[0070] For example, the digital baseband 223 employs 100% Amplitude Shift Keying (ASK) to demodulate the radio frequency (RF) signal based on the recovered clock signal and the local clock. 100% ASK is a modulation technique that transmits digital information by changing the amplitude of the RF signal. At the transmitting end, if a digit 1 is transmitted, the RF carrier is transmitted at full amplitude (100%); if a digit 0 is transmitted, the RF carrier amplitude is completely turned off (0%). At the receiving end, the digital signal can be deciphered by detecting the presence or absence of the carrier amplitude.

[0071] In this embodiment, the 100% ASK demodulation circuit eliminates analog envelope detection, using only the recovery clock (clock signal) and local clock in the digital baseband for demodulation. Compared to traditional solutions where the digital baseband uses intermittent recovery clocks from RF signals to control the state machine's state, this embodiment adds a local clock oscillator as an arbitrator in the analog front-end module. The digital baseband 223 can receive a stable local clock when controlling the state machine, making it easier to coordinate the various positioning antennas.

[0072] For example, such as Figures 3 to 6 As shown, the analog front-end module 222 also includes multiple resonant capacitors corresponding to multiple positioning antennas. The other ends of multiple sets of input and output pins are connected to the transceiver unit through the corresponding resonant capacitors. The capacitance value of the resonant capacitors is from 15pF to 23.5pF.

[0073] Specifically, the resonant capacitor and the positioning antenna constitute a resonant circuit, which collects the energy generated by the radio frequency signal and supplies power to other modules of the tag chip through the common power supply 2222.

[0074] The capacitance value of the resonant capacitor ranges from 15pF to 23.5pF. For example, the capacitance value of the resonant capacitor can be 15pF, 16pF, 20pF, 21pF, or 23.5pF. Within the range of 15pF to 23.5pF, the smaller the capacitance value of the resonant capacitor, the easier it is to integrate into the tag chip. The smaller the capacitance value, the larger the inductance, the stronger the current collection capability, and the higher the sensitivity of digital baseband identification.

[0075] For example, the structure of the base strip label 20 provided in the embodiments of the present invention can be as follows: Figure 7 As shown, where, Figure 7 Taking a positioning antenna of 4 as an example, but not limited to this.

[0076] Specifically, see Figure 7 Each set of input / output pins contains two endpoints. The four sets of input / output pins correspond one-to-one with the four positioning antennas. For example, endpoints 2 and 3 represent the first set of input / output pins, connected to positioning antenna 1. The positioning antennas are used to receive RF signals and transmit modulated signals. The positioning antennas can be obtained through etching. The positioning antennas can be purely inductive, without capacitors to ensure a resonant frequency of 13.56MHz.

[0077] The analog front end (AFE) includes electrostatic discharge (ESD) protection circuits, rectifier circuits, bleeder circuits, voltage limiting circuits, multi-antenna power management units, clock recovery units, receiver units, transmitter units (multi-antenna independent load modulation), holding capacitors, low dropout linear regulators (LDOs), local clock oscillators (LOs), bandgap reference sources, and power-on reset (POR) units.

[0078] ESD is used to prevent external electrostatic discharge from damaging the internal circuitry of the chip. The rectifier circuit converts the high-frequency AC radio frequency signal received by the positioning antenna into DC voltage. Simultaneously, it adjusts the voltage amplitude through resistor division, limiting the RF signal voltage input to the positioning antenna to a low range (e.g., below 5V) to prevent damage to subsequent circuits from excessively high voltage. After resistor division, the adjusted voltage is compared with a reference voltage. If the adjusted voltage exceeds the reference voltage, current is released through a bleeder circuit.

[0079] Multiple low-threshold MOS diodes connected in parallel form a multi-antenna power management unit, which selects one of the rectified outputs from multiple positioning antennas to provide a stable DC power supply for subsequent circuits, thereby improving the energy harvesting efficiency of the tag chip in a multi-antenna environment.

[0080] The low dropout regulator (LDO) regulates the rectified voltage to different levels, such as analog 1.2V, NVM 1.2V, and digital 1.2 / 1.5 / 1.8V, providing precise and stable power to various modules within the chip. A bandgap reference source generates a voltage reference, ensuring the LDO's voltage accuracy. Power-on reset (POR) generates a reset signal upon chip power-up, ensuring each module starts operating from its initial state and preventing logic corruption. A local clock oscillator (LO) generates a 3MHz to 30MHz local oscillation signal, providing a clock for demodulation, modulation, and other analog / digital circuits. Data grooves are determined by local clock sampling, and the distance between data grooves is statistically analyzed using clock recovery counting.

[0081] Clock recovery extracts the clock signal (CLK1-4) from the received RF signal, providing a timing reference for demodulation and encoding operations of the digital baseband, ensuring data transmission synchronization. The multi-antenna independent load modulation unit modulates the digital signal from the tag chip onto the RF carrier, achieving data backhaul by changing the load characteristics of the positioning antenna. Independent modulation of multiple antennas improves the coverage and stability of the backhaul signal.

[0082] The demodulation module (antenna 1-4 demodulation) in the digital baseband is used to demodulate the received RF signal (e.g., 100% ASK demodulation), extract the task command, and supports multi-band demodulation (fc / 128, fc / 512, etc.) to adapt to different communication rate requirements. The modulation module (antenna 1-4 modulation module) in the digital baseband is used to modulate the data to be transmitted back onto the RF carrier. The data is then modulated by a multi-antenna independent load modulation unit to the corresponding positioning antenna and transmitted through that antenna. The modulation module supports multi-band demodulation (fc / 16 / 128, fc / 32 / 512, etc.).

[0083] The clock module (CLK1-4) in the digital baseband manages the clock signals of multiple antennas, enabling timing coordination among them. The Cyclic Redundancy Check (CRC) module in the digital baseband performs CRC checks on both received and transmitted data, ensuring data transmission accuracy and preventing errors.

[0084] The reporting information generation module in the digital baseband is used to encapsulate the tag's internal status and data (such as SN number and configuration information) into a reporting frame that conforms to the protocol, ready to be transmitted back to the reader. The NVM interface in the digital baseband communicates with the NVM module to read or write the tag's configuration information, SN number, and other non-volatile data.

[0085] The state machine TIMER in the digital baseband is used to implement tag state management and timing control, such as communication timeout detection and state switching. The debug port in the digital baseband is used for debugging during the chip development phase, and can output internal signals and read register states to accelerate problem localization.

[0086] Non-volatile memory (NVM IP module) stores critical data such as the tag chip's serial number, initial CRC value, and configuration information (cfg), which is retained even after the chip loses power. Non-volatile memory can also be eMemory OTP, Synopsys ULP NTP IP, etc.

[0087] In some embodiments, the positioning antenna 21 can be fabricated using an etching process. Specifically, a resist pattern can be formed on a substrate (PET / PI) covered with metal (copper / aluminum) by photolithography or laser, and then the unprotected metal can be removed using a chemical etching solution to form the positioning antenna. The positioning antenna formed by etching has smooth edges, good consistency, and higher precision.

[0088] In other embodiments, the positioning antenna can be fabricated using a winding process. Specifically, insulated wire can be wound around a magnetic core according to a designed number of turns and spacing to form a coil or helical antenna. This is an additive manufacturing process with high material utilization and low cost.

[0089] The positional relationship between the plurality of positioning antennas 21 and a tag chip 22 in the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0090] In some embodiments, the plurality of positioning antennas 21 may extend in a one-dimensional direction, and the plurality of positioning antennas 21 may be spaced apart in a horizontal direction, with the tag chip 22 disposed between the plurality of positioning antennas 21. For example, as Figure 8 As shown, the number of positioning antennas 21 is N+M. N positioning antennas can be set on one side of the tag chip 22 in the horizontal direction (such as the right side), and M positioning antennas can be set on the other side of the tag chip 22 in the horizontal direction (such as the left side). M and N are both integers, M≥0, N≥0, and M and N can be the same or different.

[0091] In other embodiments, the plurality of positioning antennas 21 may extend in a two-dimensional direction or in a three-dimensional direction. Specifically, the plurality of positioning antennas consists of a plurality of third positioning antennas and a plurality of fourth positioning antennas, with the plurality of third positioning antennas spaced apart in the horizontal direction and the plurality of fourth positioning antennas spaced apart in the vertical direction. Alternatively, the plurality of positioning antennas consists of a plurality of third positioning antennas, a plurality of fourth positioning antennas, and a plurality of fifth positioning antennas, with the plurality of third positioning antennas spaced apart in the horizontal direction, the plurality of fourth positioning antennas spaced apart in the vertical direction, and the plurality of fifth positioning antennas spaced apart in the height direction.

[0092] For example, such as Figure 9 As shown, one tag chip can connect to (M+N)×(K+L) positioning antennas 21. The multiple positioning antennas 21 are not only spaced apart in the horizontal direction, but also spaced apart in the vertical direction. K and L are both integers, K≥1, L≥0, and K and L can be the same or different.

[0093] For example, multiple positioning antennas 21 are spaced apart in the horizontal direction, such as Figure 10 As shown, any two adjacent positioning antennas among the multiple positioning antennas 21 are equally spaced in the horizontal direction.

[0094] in, Figure 10 Taking an example with eight positioning antennas, but not limited to this, the tag chip can be placed between two positioning antennas in a central position among multiple positioning antennas. The tag chip is smaller than the antennas, therefore... Figure 10 The area containing the tag chip has been magnified horizontally to showcase the tag chip.

[0095] In this embodiment of the invention, multiple base strip labels 20 are integrated on a roll of tape. The roll of tape is cut as required and placed inside the base strip. Any two adjacent positioning antennas have the same horizontal spacing, which not only facilitates processing but also makes it easy to confirm the position of the positioning antennas and avoids cutting the positioning antennas during cutting.

[0096] Furthermore, the horizontal spacing between two adjacent positioning antennas is greater than or equal to 3mm. This embodiment of the invention controls the horizontal spacing between two positioning antennas to be greater than 3mm, which not only reduces interference between antennas but also avoids situations where the positioning antennas are cut off due to a smaller spacing. When the horizontal spacing between two adjacent positioning antennas is 3mm to 4mm, seamless switching between the two positioning coils can be achieved with minimal interference; while maintaining flexible configuration of the positioning antennas, the accuracy of antenna position identification is improved.

[0097] Optionally, the multiple positioning antennas 21 have the same shape, size, number of turns, and corresponding inductance value, which facilitates processing.

[0098] In some embodiments, such as Figure 10 As shown, the horizontal dimension of the positioning antenna can be 25mm, and the vertical spacing between the positioning antennas is determined based on application requirements. For example, the vertical dimension of the positioning antenna can be 21mm or 25mm, etc. The external dimensions of each positioning antenna can be 29mm × 31mm. When the horizontal spacing between two adjacent positioning antennas is 3mm, it can be cut at the middle of the 3mm.

[0099] When actually cutting tape with multiple base strip labels, it is usually fixed to one side for cutting. For example, it can be specified to cut on the right side. This is to ensure that the remaining positioning antenna after cutting can be connected to the label chip, thus avoiding the situation where the positioning antenna in the tape placed inside the base strip after cutting is not connected to the label chip. Figure 11 As shown, multiple positioning antennas are placed on one side of the tag chip 22.

[0100] To facilitate wiring, the number of multiple positioning antennas can be 2 to 4, among which... Figure 11 Taking a positioning antenna of 4 as an example, but not limited to this.

[0101] It should be noted that when cutting the tape, in order to avoid cutting the label chip, a marking frame can be printed on the tape. The marking frame is used to indicate the position of the label chip.

[0102] Furthermore, considering the length of the connection line between the positioning antenna and the tag chip, such as Figure 12 As shown, the tag chip is positioned between the first positioning antenna and the second positioning antenna. The first positioning antenna is the outermost positioning antenna in the horizontal direction among the multiple positioning antennas. Figure 12 The positioning antenna 1 or positioning antenna 4 shown in the figure, the second positioning antenna is the positioning antenna that is adjacent to the first positioning antenna in the horizontal direction among a plurality of positioning antennas.

[0103] If the first positioning antenna is positioning antenna 1, then the second positioning antenna is positioning antenna 2; if the first positioning antenna is positioning antenna 4, then the second positioning antenna is positioning antenna 3. Figure 12 Taking the example of the tag chip being located between positioning antenna 1 and positioning antenna 2.

[0104] In order to reduce the probability of accidental damage to the tag chip caused by the cutting position being between the first positioning antenna and the second positioning antenna, the tag chip 22 is placed biased towards the first positioning antenna, and the closer the tag chip 22 is to the first positioning antenna, the better.

[0105] Optionally, such as Figure 13 As shown, the first positioning antenna can be an irregular structure with an opening, the opening facing the second positioning antenna in the horizontal direction, and the tag chip 22 is located inside the opening.

[0106] In this embodiment, the tag chip is hidden inside the opening of the first positioning antenna, which can further reduce the probability of accidental damage to the tag chip. At the same time, etching the antenna facilitates the processing shape, and forming an opening on the first positioning antenna does not increase the process difficulty.

[0107] In some embodiments, in order to match the antenna height of ESL, the height of the positioning antenna (the vertical dimension of the positioning antenna) is set to 28.5 mm, and in order to balance positioning accuracy and the number of positioning antennas that can be set on the base strip, the horizontal dimension of the positioning antenna is set to 26 mm.

[0108] At this point, if the horizontal spacing between two adjacent positioning antennas is small (e.g., 3mm), considering the space occupied by the cutting, tag chip, and positioning antenna connection points and connecting lines, such as... Figure 14 and Figure 15As shown, the tag chip is placed within the housing space of the first positioning antenna. Multiple positioning antennas are located on the front side of the substrate, and the tag chip is located on the back side of the substrate. The connection lines between the tag chip and the multiple positioning antennas are located on the back side of the substrate. The substrate is etched on both sides, and the power supply connection between the positioning antennas and the tag chip is achieved through vias in the substrate.

[0109] In this embodiment, the tag chip and the positioning antenna are placed on different sides of the substrate, which can improve space utilization. Moreover, the reverse wiring is not blocked by the antenna, and the shortest path connection can be used to reduce impedance loss.

[0110] It should be understood that after the positioning antenna is integrated into the base strip, the central area of ​​the positioning antenna corresponds to the battery placement position of the electronic price tag 50 described below. To avoid the battery affecting the antenna's transmission and reception, and to reduce electromagnetic interference within the antenna itself and to make the radiation field more uniform, the center of the positioning antenna has a large accommodating space to accommodate the tag chip. To minimize interference, the connection line between the positioning antenna and the tag chip is not horizontal; the connection point passes vertically through the substrate.

[0111] For example, a substrate is provided with pads, and a plurality of first bumps are provided on the pads. A tag chip is provided with a plurality of second bumps. The plurality of first bumps and the plurality of second bumps correspond one-to-one. Multiple sets of input and output pins are connected to the corresponding positioning antennas through the plurality of first bumps and the plurality of second bumps.

[0112] Specifically, the tag chip is soldered onto the shelf substrate via pads and connected to multiple positioning antennas via multiple first bumps and multiple second bumps.

[0113] Optionally, the size of the first bump is larger than the size of the second bump. The mating of the tag chip and the shelf substrate depends on the precise positioning of the pick-and-place machine. In this embodiment, the size of the first bump is larger than the size of the second bump, which is equivalent to forming a contact tolerance zone. Even if there is a slight alignment deviation, the second bump can still stably fall within the effective contact range of the first bump, which greatly reduces the precision requirements of the mounting process and improves the mass production yield.

[0114] The number, arrangement, and size of the first and second bumps vary depending on the number of positioning antennas. The size of the pads changes with the first bump, and the size of the tag chip changes with the second bump. The following explanation uses 2, 3, and 4 positioning antennas as examples to illustrate the structure of the pads and tag chip.

[0115] When the number of positioning antennas 21 is 2, in one example, the connection relationship between the tag chip 22 and the 2 positioning antennas is as follows: Figure 16 As shown, the distance between the tag chip 22 and the positioning antenna 2 is greater than or equal to 3mm, and the pin positions of the tag chip 22 can be as follows: Figure 17As shown, the dimension diagram (Bumper) of the tag chip can be as follows: Figure 18 As shown, the dimension drawing of pad 23 can be obtained as follows: Figure 19 As shown, the positional relationship between the first bump 231 on the pad 23 and the second bump 225 on the tag chip 22 can be as follows: Figure 20 As shown. The bumper is used for the back-end layout of the tag chip. The pads and etched antennas are located on the substrate, leaving space for soldering the bare chip (die).

[0116] Among them, such as Figure 17 As shown, the tag chip includes three test pins: VCC, IO, and GND. VCC is located before the LDO and can be input with +3.7V during testing. It can also be used to observe the combined power supply results. IO is a custom digital debugging port, and GND is grounded.

[0117] Figure 18 In this diagram, B represents the side length of the second bump 225, Gh represents the spacing between the center lines of two adjacent first bumps 231 in the horizontal direction of the pad 23, Dh represents the length of the tag chip, Gv represents the spacing between the center lines of two adjacent first bumps 231 in the width direction of the pad 23, and Dv represents the width of the tag chip. Figure 19 In this context, F1 represents the side length of the first protrusion 231, and F2 represents the minimum distance between two adjacent first protrusions 231. Figure 20 In this context, T represents the mounting accuracy, which can be characterized by the minimum spacing between the second protrusion 225 and the corresponding first protrusion 231 in the horizontal or width direction. The dimensions mentioned above (B, Dh, Dv, Gv, Gh, F1, F2, and T) can be set by the designer according to requirements.

[0118] In this embodiment, the tag chip is square in shape, and the side length of the tag chip is greater than or equal to 0.39 mm, that is, Dh ≥ 0.39 mm, Dv ≥ 0.39 mm, for example, Figure 17 As shown, the side length of the tag chip is 0.5mm.

[0119] In another example, the two positioning antennas and the tag chip 22 are not located on the same side of the substrate, and the connection relationship between the tag chip 22 and the two positioning antennas is as follows: Figure 21 and Figure 22 As shown.

[0120] When the number of positioning antennas 21 is 3, in one example, the connection relationship between the tag chip 22 and the 3 positioning antennas 21 can be as follows: Figure 23 As shown, the pin positions of tag chip 22 can be as follows: Figure 24 As shown, the dimension diagram (Bumper) of the tag chip can be as follows: Figure 25 As shown, the dimension drawing of pad 23 can be obtained as follows: Figure 26 As shown.

[0121] In this embodiment, the tag chip is rectangular in shape. For example, Dh can be 0.9 mm and Dv can be 0.5 mm.

[0122] In another example, the three positioning antennas and the tag chip 22 are not located on the same side of the substrate, and the connection relationship between the tag chip 22 and the three positioning antennas is as follows: Figure 27 and Figure 28 As shown.

[0123] In some embodiments, the number of positioning antennas 21 is 4, the tag chip 22 is rectangular, and the connection relationship between the tag chip 22 and the 4 positioning antennas is as follows: Figure 29 As shown, the pin positions of tag chip 22 can be as follows: Figure 30 As shown, the dimension diagram (Bumper) of the tag chip can be as follows: Figure 31 As shown, the dimension drawing of pad 23 can be obtained as follows: Figure 32 As shown, the positional relationship between the first bump 231 on the pad 23 and the second bump 225 on the tag chip 22 can be as follows: Figure 33 As shown.

[0124] In this embodiment, the first side of the rectangular tag chip is greater than or equal to 1.19 mm, and the second side of the rectangular tag chip is greater than or equal to 0.39 mm, i.e., Dh ≥ 1.19 mm and Dv ≥ 0.39 mm. For example, the Dh of the tag chip can be 1.3 mm, and the Dv of the tag chip can be 0.5 mm.

[0125] In other embodiments, the number of positioning antennas 21 is four, the tag chip 22 is square, and the connection relationship between the tag chip 22 and the four positioning antennas is as follows: Figure 34 As shown, the pin positions of tag chip 22 can be as follows: Figure 35 As shown, the dimension diagram (Bumper) of the tag chip can be as follows: Figure 36 As shown, the dimension drawing of pad 23 can be obtained as follows: Figure 37 As shown, the positional relationship between the first bump 231 on the pad 23 and the second bump 225 on the tag chip 22 can be as follows: Figure 38 As shown.

[0126] In this embodiment, the side length of the square tag chip is greater than or equal to 0.79 mm, i.e., Dh ≥ 0.79 mm and Dv ≥ 0.79 mm. For example, the Dh of the tag chip can be 0.9 mm and the Dv of the tag chip can be 0.9 mm.

[0127] The positioning antenna is an aluminum etched antenna. The line width of the positioning antenna is greater than or equal to 0.2mm, the line spacing of the positioning antenna is greater than or equal to 0.2mm, the side length F1 of the first protrusion 231 is greater than or equal to 0.2mm, the minimum distance F2 between two adjacent first protrusions 231 is greater than or equal to 0.2mm, and the side length B of the second protrusion 225 is greater than or equal to 0.07mm.

[0128] Specifically, the positioning antenna needs to transmit radio frequency signals. A line width of 0.2mm or more can control the resistance within a reasonable range, meet the low loss requirements of radio frequency signal transmission, and avoid process defects (such as uneven line width, broken lines, etc.). A line spacing of 0.2mm or more can reserve sufficient process tolerance space to avoid short circuit problems caused by etching residue and line width deviation. The pads also need to meet the corresponding restrictions, namely F1≥0.2mm and F2≥0.2mm.

[0129] For example, the second protrusion 225 is located within the corresponding first protrusion 231, and the minimum horizontal distance between the second protrusion 225 and the corresponding first protrusion 231 is greater than or equal to 0.02mm, that is, the mounting accuracy T≥0.02mm.

[0130] In this embodiment, setting the mounting accuracy T to 0.02mm or higher can reserve sufficient buffer space, ensuring the connection reliability of the first bump and the second bump even if there is an offset error, and reducing signal transmission loss.

[0131] The present invention also provides a base strip, as described in embodiments of the present invention, such as Figure 39 As shown, the base strip 11 includes a base 111 and a plurality of base strip labels 20 provided in any of the above embodiments, the plurality of base strip labels 20 being spaced apart along the extension direction of the base 111.

[0132] Furthermore, such as Figure 39 As shown, the first spacing C1 and the second spacing C2 are equal. The first spacing C1 is the distance between two positioning antennas that are close to each other on two adjacent base strip tags, and the second spacing C2 is the distance between two adjacent positioning antennas within a base strip tag. That is, the spacing between any two adjacent positioning antennas from different base strip tags on the substrate 111 is equal, which facilitates positioning.

[0133] The present invention also provides an electronic price tag system, as described in embodiments of the present invention, such as... Figure 40 As shown, the electronic price tag system includes at least one base strip 11, an electronic price tag 50, an access point 60, and a server 70.

[0134] Specifically, the base strip 11 includes a base 111 and a plurality of base strip labels 20, which are spaced apart along the extension direction of the base; the electronic price tag 50 is installed above the base strip 11 and is configured to periodically communicate with at least one positioning antenna and read the corresponding configuration information; the server 70 is configured to communicate with the electronic price tag through an access point 60 and determine the position of the electronic price tag 50 according to the corresponding configuration information.

[0135] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0136] In the description of this specification, the references to terms such as "this embodiment," "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0137] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A base strip label, characterized in that The base bar label comprises a plurality of positioning antennas and a label chip, the label chip comprises an analog front-end module, a storage module, a digital baseband and a plurality of groups of input and output pins corresponding to the plurality of positioning antennas, the analog front-end module comprises a multi-antenna power management unit, a common power supply and a transceiver unit, and the storage module stores configuration information corresponding to the plurality of positioning antennas; One end of each of the plurality of groups of input and output pins is connected to a corresponding positioning antenna, and the other end of each of the plurality of groups of input and output pins is connected to the common power supply through the multi-antenna power management unit, the multi-antenna power management unit is used to make a target positioning antenna in communication with the common power supply, so that the common power supply supplies power to the digital baseband and the storage module, and the target positioning antenna is one of the plurality of positioning antennas that is activated; The other end of each of the plurality of groups of input and output pins is also connected to the digital baseband through the transceiver unit, and the digital baseband is connected to the storage module.

2. The base strip label of claim 1, wherein, The transceiver unit comprises a plurality of receiving units and a plurality of transmitting units, the plurality of receiving units correspond one-to-one to the plurality of positioning antennas, and the plurality of transmitting units correspond one-to-one to the plurality of positioning antennas; One end of each of the plurality of receiving units is connected to an input and output pin connected by a corresponding positioning antenna, and the other end of each of the plurality of receiving units is connected to the digital baseband; One end of each of the plurality of transmitting units is connected to an input and output pin connected by a corresponding positioning antenna, and the other end of each of the plurality of transmitting units is connected to the digital baseband.

3. The base strip label of claim 1, wherein, The analog front-end module further comprises a multi-antenna selection circuit, the transceiver unit comprises a receiving unit and a plurality of transmitting units, and the plurality of transmitting units correspond one-to-one to the plurality of positioning antennas; One end of each of the plurality of transmitting units is connected to an input and output pin connected by a corresponding positioning antenna, and the other end of each of the plurality of transmitting units is connected to the digital baseband; One end of the receiving unit is connected to the plurality of groups of input and output pins through the multi-antenna selection circuit, the other end of the receiving unit is connected to the digital baseband, the digital baseband is connected to the multi-antenna selection circuit, the digital baseband is used to determine the target positioning antenna from the plurality of positioning antennas, and the digital baseband is used to control the multi-antenna selection circuit to make the target positioning antenna and the receiving unit in communication.

4. The base strip label of claim 1, wherein, The analog front-end module further comprises a multi-antenna selection circuit, the transceiver unit comprises a plurality of receiving units and a transmitting unit, and the plurality of receiving units correspond one-to-one to the plurality of positioning antennas; One end of each of the plurality of receiving units is connected to an input and output pin connected by a corresponding positioning antenna, and the other end of each of the plurality of receiving units is connected to the digital baseband; One end of the transmitting unit is connected to the multiple groups of input and output pins through the multiple antenna selection circuits, and the other end of the transmitting unit is connected to the digital baseband.

5. The base strip label of claim 1, wherein, The analog front-end module further comprises multiple antenna selection circuits, and the transceiving unit comprises a receiving unit and a transmitting unit. One end of the receiving unit is connected to the multiple groups of input and output pins through the multiple antenna selection circuits, and the other end of the receiving unit is connected to the digital baseband. One end of the transmitting unit is connected to the multiple groups of input and output pins through the multiple antenna selection circuits, and the other end of the transmitting unit is connected to the digital baseband. The digital baseband is connected to the multiple antenna selection circuits, and the digital baseband is configured to determine the target positioning antenna from the multiple positioning antennas and control the multiple antenna selection circuits to connect the target positioning antenna and the receiving unit or the target positioning antenna and the transmitting unit.

6. The base strip label according to any one of claims 1 to 5, wherein The multiple positioning antennas are arranged at intervals in the horizontal direction, and any two adjacent positioning antennas in the multiple positioning antennas have equal spacing in the horizontal direction.

7. The base strip label of claim 6, wherein, The spacing of the two adjacent positioning antennas in the horizontal direction is greater than or equal to 3 mm.

8. The base strip label of claim 6, wherein, The tag chip is located in a containing space inside a first positioning antenna, and the first positioning antenna is a positioning antenna closest to the outside among the multiple positioning antennas in the horizontal direction.

9. The base strip label of claim 8, wherein, The multiple positioning antennas are arranged on the front surface of a substrate, and the tag chip is arranged on the back surface of the substrate, and the connection lines of the tag chip and the multiple positioning antennas are located on the back surface of the substrate.

10. The base strip label of claim 6, wherein, The tag chip is located between a first positioning antenna and a second positioning antenna, the first positioning antenna is a positioning antenna closest to the outside among the multiple positioning antennas in the horizontal direction, and the second positioning antenna is a positioning antenna adjacent to the first positioning antenna among the multiple positioning antennas in the horizontal direction.

11. The base strip label of claim 10, wherein, The first positioning antenna has a special-shaped structure with an opening, the opening faces the second positioning antenna in the horizontal direction, and the tag chip is located in the opening.

12. The base strip label according to any one of claims 1 to 5, wherein The storage module comprises a non-volatile memory.

13. The base strip label according to any one of claims 1 to 5, wherein The positioning antennas are prepared by an etching process or a winding process.

14. The base strip label according to any one of claims 1 to 5, wherein, The multiple positioning antennas are composed of multiple third positioning antennas and multiple fourth positioning antennas, the multiple third positioning antennas are arranged at intervals in the horizontal direction, and the multiple fourth positioning antennas are arranged at intervals in the vertical direction.

15. The base strip label according to any one of claims 1 to 5, wherein, The multiple positioning antennas are composed of multiple third positioning antennas, multiple fourth positioning antennas and multiple fifth positioning antennas, the multiple third positioning antennas are arranged at intervals in the horizontal direction, the multiple fourth positioning antennas are arranged at intervals in the vertical direction, and the multiple fifth positioning antennas are arranged at intervals in the height direction.

16. A base strip, characterized in that The base strip comprises a substrate and a plurality of base strip tags as claimed in any one of claims 1 to 15, the plurality of base strip tags being spaced along the extension direction of the substrate.

17. The base strip of claim 16, wherein, The first distance is equal to the second distance, the first distance being the distance between two positioning antennas of two adjacent base strip tags approaching each other, and the second distance being the distance between two adjacent positioning antennas in the base strip tag.

18. An electronic price tag system characterized by, The electronic price tag system comprises at least one base strip, an electronic price tag, an access point and a server; The base strip comprises a substrate and a plurality of base strip tags as claimed in any one of claims 1 to 13, the plurality of base strip tags being spaced along the extension direction of the substrate. The electronic price tag is mounted above the base strip and is configured to periodically communicate with at least one positioning antenna and read corresponding configuration information. The server is configured to communicate with the electronic price tag through the access point and determine the position of the electronic price tag according to the corresponding configuration information.

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