Electronic shelf positioning label

Abstract

The utility model discloses a kind of electronic shelf positioning label, the label includes bluetooth chip, radio frequency antenna circuit, NFC label read-write circuit, NFC antenna circuit, battery, screen drive circuit, electronic paper display screen, 2D acceleration sensor circuit, storage circuit, RGB indicator light circuit, the cooperative design of utility model hardware circuit and low-power management strategy, realize the automatic, accurate collection and update of electronic shelf label position, completely avoid the error and inefficiency of manual input, label is triggered positioning by acceleration sensor, intermittent work is combined in NFC circuit, and power consumption is managed by bluetooth master control concentration, so that label can consume energy very low when long-term waiting, battery life is significantly prolonged, constitute an efficient, intelligent and maintenance-free shelf commodity positioning management system.

Description

Technical Field

[0001] This utility model belongs to the field of label technology, specifically relating to an electronic shelf positioning label. Background Technology

[0002] With the development of smart warehousing and supermarkets, the demand for product positioning functions will gradually increase, especially for accurate product positioning.

[0003] Currently available electronic tag positioning systems on the market have the following drawbacks: poor positioning accuracy, high power consumption, and high cost.

[0004] When you want to implement location services, you often use the following two methods.

[0005] Option 1: Use AOA technology for positioning.

[0006] Disadvantages: Bluetooth with AOA functionality is more expensive than regular Bluetooth solutions, and requires the deployment of multiple Bluetooth gateways for positioning. The number of gateways is directly proportional to the positioning accuracy, further increasing the cost. Additionally, due to the diverse deployment scenarios, signal multipath and fading lead to significant variations in RSSI, making accurate positioning difficult.

[0007] Option 2: Use ultra-wideband (UWB) technology for positioning.

[0008] Disadvantages: UWB solutions are more expensive than regular Bluetooth solutions. They also consume significantly more power, typically several times that of Bluetooth, resulting in shorter battery life and an inability to address the need for precise location-level positioning. Utility Model Content

[0009] Therefore, the main objective of this utility model is to provide an electronic shelf positioning label.

[0010] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0011] This utility model embodiment provides an electronic shelf positioning tag, which includes a Bluetooth chip, an RF antenna circuit, an NFC tag reading and writing circuit, an NFC antenna circuit, a battery, a screen driving circuit, an electronic paper display screen, a 2D accelerometer sensor circuit, a storage circuit, and an RGB indicator light circuit. The Bluetooth chip is communicatively connected to the RF antenna circuit, the screen driving circuit, the 2D accelerometer sensor circuit, the storage circuit, and the NFC tag reading and writing circuit. The screen driving circuit is communicatively connected to the electronic paper display screen. The signal output terminal of the NFC tag reading and writing circuit is connected to the signal input terminal of the NFC antenna circuit. The power supply output terminal of the battery is connected to the power supply input terminals of the Bluetooth chip, the NFC tag reading and writing circuit, and the screen driving circuit, respectively, to provide operating power for the Bluetooth chip, the NFC tag reading and writing circuit, and the screen driving circuit. The Bluetooth chip is also communicatively connected to the RGB indicator light circuit to control the display status of the RGB indicator light circuit.

[0012] In the above scheme, the radio frequency antenna circuit includes a third inductor, a second multilayer inductor, a third multilayer inductor, a fourth multilayer inductor, an eighth capacitor, a ninth capacitor, an eleventh metal capacitor, and an antenna. The first end of the third multilayer inductor is connected to the first end of the fourth multilayer inductor and the RF terminal of the Bluetooth chip. The second end of the third multilayer inductor is connected to the first end of the second multilayer inductor and the first end of the eleventh metal capacitor. The second end of the second multilayer inductor is connected to the first end of the third inductor and the first end of the ninth capacitor. The second end of the third inductor is connected to the antenna and the first end of the eighth capacitor. The second ends of the eighth capacitor, the ninth capacitor, the eleventh metal capacitor, and the fourth multilayer inductor are all grounded.

[0013] In the above scheme, the 2D accelerometer circuit includes a 2D accelerometer, a seventh metal resistor, and an eighth metal resistor. The power output terminal of the battery is connected to the first terminal of the seventh metal resistor and the first terminal of the eighth metal resistor, respectively. The second terminal of the seventh metal resistor is connected to the CS terminal of the 2D accelerometer, and the second terminal of the eighth metal resistor is connected to the SDO / SAO terminal of the 2D accelerometer.

[0014] In the above scheme, the NFC tag reading and writing circuit includes an NFC tag reading and writing circuit and a crystal oscillator circuit. The crystal oscillator circuit is communicatively connected to the NFC tag reading and writing circuit. The NFC tag reading and writing circuit is communicatively connected to the Bluetooth chip. The signal output terminal of the NFC tag reading and writing circuit is connected to the signal input terminal of the NFC antenna circuit.

[0015] In the above scheme, the NFC tag read / write circuit includes an NFC chip, a 20th resistor, a 30th capacitor, a 28th resistor, a 27th resistor, a 26th resistor, a 21st resistor, a 31st capacitor, a 32nd capacitor, a 33rd capacitor, a 34th capacitor, a 43rd capacitor, a 44th capacitor, a 24th resistor, and a 25th resistor. The power output terminal of the battery is connected to the first terminal of the 20th resistor and the first terminal of the 30th capacitor, respectively. The second terminal of the 20th resistor is connected to the first terminal of the 21st resistor, the first terminal of the 31st capacitor, the first terminal of the 32nd capacitor, the PVDD terminal of the NFC chip, the DVDD terminal of the NFC chip, the first terminal of the 28th resistor, the first terminal of the 27th resistor, the first terminal of the 26th resistor, and the 33rd resistor. The first terminal of the capacitor, the first terminal of the thirty-fourth capacitor, the SVDD terminal of the NFC chip, the first terminal of the forty-third capacitor, the first terminal of the forty-fourth capacitor, and the AVDD terminal of the NFC chip are connected. The second terminals of the thirty-first, thirty-second, thirty-third, thirty-fourth, forty-third, and forty-fourth capacitors, the DVSS terminal of the NFC chip, and the PVSS terminal of the NFC chip are all grounded. The RX terminal of the NFC chip is connected to the first terminal of the twenty-fourth resistor and the first terminal of the twenty-fifth resistor, respectively. The second terminal of the twenty-fourth resistor is connected to the VMID terminal of the NFC chip. The second terminal of the twenty-fifth resistor is connected to the first terminal of the forty-fifth capacitor. The I RQ terminal of the NFC chip is connected to the GPIO07 terminal of the Bluetooth chip. The S_SDA terminal of the NFC chip is connected to the GPIO11 terminal of the Bluetooth chip. The S_SCL terminal of the NFC chip is connected to the GPIO12 terminal of the Bluetooth chip. The NRT terminal of the NFC chip is connected to the GPIO14 terminal of the Bluetooth chip.

[0016] In the above scheme, the crystal oscillator circuit includes a third crystal oscillator, a twelfth metal capacitor, and a thirteenth metal capacitor. The IN terminal of the third crystal oscillator is connected to the XTAL27M_N terminal of the NFC chip and the first terminal of the twelfth metal capacitor, respectively. The OUT terminal of the third crystal oscillator is connected to the XTAL27M_P terminal of the NFC chip and the first terminal of the thirteenth metal capacitor, respectively. The second terminal of the twelfth metal capacitor is connected to the GND terminal of the third crystal oscillator and then grounded. The second terminal of the thirteenth metal capacitor is connected to the GND terminal of the third crystal oscillator and then grounded.

[0017] In the above scheme, the NFC antenna circuit includes an NFC antenna, a 22nd resistor, a 23rd resistor, a 41st capacitor, a 39th capacitor, a 42nd capacitor, a 40th capacitor, a 35th capacitor, a 37th capacitor, a 36th capacitor, a 38th capacitor, a 4th inductor, and a 5th inductor. The two ends of the NFC antenna are connected to the first ends of the 22nd and 23rd resistors, respectively. The second end of the 22nd resistor is connected to the first ends of the 41st, 39th, and 37th capacitors, respectively. The second end of the 23rd resistor is connected to the first ends of the 42nd, 40th, and 38th capacitors, respectively. The second end of the 37th capacitor is connected to the first end of the 35th capacitor and the first end of the 4th inductor, respectively. The second end of the 4th inductor is connected to the TX1 terminal of the NFC chip. The first end of the 36th capacitor is connected to the second end of the 38th capacitor. The second end of the 38th capacitor is connected to the first end of the 5th inductor. The second end of the 5th inductor is connected to the TX2 terminal of the NFC chip. The second ends of the 41st, 39th, 42nd, and 40th capacitors are all grounded.

[0018] In the above scheme, the screen driving circuit includes a first MOSFET, a first inductor, a first diode, a second diode, a third diode, a first capacitor, a second capacitor, a fourth capacitor, a fifth capacitor, a seventeenth capacitor, a twenty-sixth capacitor, a second resistor, a third resistor, and a fourth resistor. The first end of the fourth resistor is connected to the power output terminal of the battery and the first end of the twenty-sixth capacitor, respectively. The second end of the fourth resistor is connected to the first end of the first inductor, the first end of the fifth capacitor, and the first end of the seventeenth capacitor, respectively. The second end of the first inductor is connected to the drain of the first MOSFET, the anode of the third diode, and the first end of the first capacitor, respectively. The second end of the first capacitor is connected to the cathode of the first diode and the anode of the second diode, respectively. The source of the first MOSFET is connected to the first end of the third resistor, and the gate of the first MOSFET is connected to the first end of the second resistor. The second ends of the second resistor, the third resistor, the anode of the first diode, the second ends of the fourth capacitor, the second ends of the fifth capacitor, and the second ends of the seventeenth capacitor are all grounded.

[0019] In the above scheme, the DIS_BUSY terminal of the electronic paper display is connected to the GPIO09 terminal of the Bluetooth chip, the DIS_RES terminal of the electronic paper display is connected to the GPIO10 terminal of the Bluetooth chip, the DIS_D / C terminal of the electronic paper display is connected to the GPIO20 terminal of the Bluetooth chip, the DIS_CS terminal of the electronic paper display is connected to the GPIO22 terminal of the Bluetooth chip, the SCL terminal of the electronic paper display is connected to the GPIO15 terminal of the Bluetooth chip, the SDA terminal of the electronic paper display is connected to the GPIO21 terminal of the Bluetooth chip, the PREVGL terminal of the electronic paper display is connected to the cathode of the second diode, the PREVGH terminal of the electronic paper display is connected to the cathode of the third diode, the RESE terminal of the electronic paper display is connected to the source of the first MOSFET, and the GDR terminal of the electronic paper display is connected to the gate of the first MOSFET.

[0020] In the above scheme, the RGB indicator circuit includes an RGB indicator, a twelfth resistor, a fourteenth resistor, and a fifteenth resistor. The power output terminal of the battery is connected to the input terminal of the RGB indicator. The first output terminal of the RGB indicator is connected to the GPIO08 terminal of the Bluetooth chip after being connected in series with the twelfth resistor. The second output terminal of the RGB indicator is connected to the GPIO03 terminal of the Bluetooth chip after being connected in series with the fourteenth resistor. The fourth output terminal of the RGB indicator is connected to the GPIO08 terminal of the Bluetooth chip after being connected in series with the fifteenth resistor.

[0021] Compared with existing technologies, the collaborative design of the hardware circuit and the low-power management strategy of this utility model realize the automatic and accurate collection and updating of electronic shelf label positions, completely avoiding the errors and inefficiencies of manual input. The label is positioned by an acceleration sensor, combined with the intermittent operation of the NFC circuit and the centralized power consumption management by the Bluetooth chip, so that the label consumes very little power when it is on standby for a long time, significantly extending the battery life, thus forming an efficient, intelligent and maintenance-free shelf merchandise positioning management system. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this invention, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of an electronic shelf positioning tag according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the Bluetooth chip and radio frequency antenna circuit described in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the 2D acceleration sensor circuit described in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the NFC tag reading and writing circuit described in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the crystal oscillator circuit described in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the NFC antenna circuit described in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the screen driving circuit described in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the electronic paper display screen described in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the RGB indicator circuit described in an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the electronic positioning tag system described in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0036] This utility model embodiment provides an electronic shelf positioning tag, such as Figures 1-9 As shown, the tag includes a Bluetooth chip, an RF antenna circuit, an NFC tag read / write circuit, an NFC antenna circuit, a battery, a screen driver circuit, an electronic paper display, a 2D accelerometer sensor circuit, a storage circuit, and an RGB indicator circuit. The Bluetooth chip is communicatively connected to the RF antenna circuit, the screen driver circuit, the 2D accelerometer sensor circuit, the storage circuit, and the NFC tag read / write circuit. The screen driver circuit is communicatively connected to the electronic paper display. The signal output terminal of the NFC tag read / write circuit is connected to the signal input terminal of the NFC antenna circuit. The power output terminal of the battery is connected to the power input terminals of the Bluetooth chip MU1, the NFC tag read / write circuit, and the screen driver circuit, providing power to the Bluetooth chip MU1, the NFC tag read / write circuit, and the screen driver circuit. The Bluetooth chip MU1 is also communicatively connected to the RGB indicator circuit to control its display status.

[0037] like Figure 2 As shown, the RF antenna circuit includes a third inductor L3, a second multilayer inductor ML2, a third multilayer inductor ML3, a fourth multilayer inductor ML4, an eighth capacitor C8, a ninth capacitor C9, an eleventh metal capacitor MC11, and an antenna ANT1. The first end of the third multilayer inductor ML3 is connected to the first end of the fourth multilayer inductor ML4 and the RF terminal of the Bluetooth chip MU1. The second end of the third multilayer inductor ML3 is connected to the first end of the second multilayer inductor ML2 and the first end of the eleventh metal capacitor MC11. The second end of the second multilayer inductor ML2 is connected to the first end of the third inductor L3 and the first end of the ninth capacitor C9. The second end of the third inductor L3 is connected to the antenna ANT1 and the first end of the eighth capacitor C8. The second ends of the eighth capacitor C8, the ninth capacitor C9, the eleventh metal capacitor MC11, and the fourth multilayer inductor ML4 are all grounded.

[0038] like Figure 2 and Figure 3As shown, the 2D accelerometer circuit includes a 2D accelerometer SU3, a seventh metal resistor SR7, and an eighth metal resistor SR8. The power output terminal VCC of the battery is connected to the first terminal of the seventh metal resistor SR7 and the first terminal of the eighth metal resistor SR8, respectively. The second terminal of the seventh metal resistor SR7 is connected to the CS terminal of the 2D accelerometer SU3, and the second terminal of the eighth metal resistor SR8 is connected to the SDO / SAO terminal of the 2D accelerometer SU3.

[0039] like Figure 1 and Figure 2 As shown, the NFC tag reading and writing circuit includes an NFC tag reading and writing circuit and a crystal oscillator circuit. The crystal oscillator circuit is communicatively connected to the NFC tag reading and writing circuit. The NFC tag reading and writing circuit is communicatively connected to the Bluetooth chip MU1. The signal output terminal of the NFC tag reading and writing circuit is connected to the signal input terminal of the NFC antenna circuit.

[0040] like Figure 2 and Figure 4As shown, the NFC tag read / write circuit includes an NFC chip MU2, a twentieth resistor R20, a thirtieth capacitor C30, a twenty-eighth resistor R28, a twenty-seventh resistor R27, a twenty-sixth resistor R26, a twenty-first resistor R21, a thirty-first capacitor C31, a thirty-second capacitor C32, a thirty-third capacitor C33, a thirty-fourth capacitor C34, a forty-third capacitor C43, a forty-fourth capacitor C44, a twenty-fourth resistor R24, and a twenty-fifth resistor R25. The battery's power output terminal VCC is connected to the first terminal of the twentieth resistor R20 and the thirtieth capacitor, respectively. The first terminal of resistor C30 is connected, and the second terminal of the twentieth resistor R20 is connected to the first terminal of the twenty-first resistor R21, the first terminal of the thirty-first capacitor C31, the first terminal of the thirty-second capacitor C32, the PVDD terminal of NFC chip MU2, the DVDD terminal of NFC chip MU2, the first terminal of the twenty-eighth resistor R28, the first terminal of the twenty-seventh resistor R27, the first terminal of the twenty-sixth resistor R26, the first terminal of the thirty-third capacitor C33, the first terminal of the thirty-fourth capacitor C34, the SVDD terminal of NFC chip MU2, the first terminal of the forty-third capacitor C43, and the fortieth... The first terminal of capacitor C44 is connected to the AVDD terminal of NFC chip MU2. The second terminals of the 30th capacitor C30, the 31st capacitor C31, the 32nd capacitor C32, the 33rd capacitor C33, the 34th capacitor C34, the 43rd capacitor C43, the 44th capacitor C44, the DVSS terminal of NFC chip MU2, and the PVSS terminal of NFC chip MU2 are all grounded. The RX terminal of NFC chip MU2 is connected to the first terminal of the 24th resistor R24 ​​and the second terminal of the 25th resistor R25. One end is connected, the second end of the 24th resistor R24 ​​is connected to the VMID terminal of the NFC chip MU2, the second end of the 25th resistor R25 is connected to the first end of the 45th capacitor C45, the IRQ terminal of the NFC chip MU2 is connected to the GPIO07 terminal of the Bluetooth chip MU1, the S_SDA terminal of the NFC chip MU2 is connected to the GPIO11 terminal of the Bluetooth chip MU1, the S_SCL terminal of the NFC chip MU2 is connected to the GPIO12 terminal of the Bluetooth chip MU1, and the NRT terminal of the NFC chip MU2 is connected to the GPIO14 terminal of the Bluetooth chip MU1.

[0041] like Figure 2 , Figure 4 and Figure 5As shown, the crystal oscillator circuit includes a third crystal oscillator Y3, a twelfth metal capacitor MC12, and a thirteenth metal capacitor MC13. The IN terminal of the third crystal oscillator Y3 is connected to the XTAL27M_N terminal of the NFC chip MU2 and the first terminal of the twelfth metal capacitor MC12, respectively. The OUT terminal of the third crystal oscillator Y3 is connected to the XTAL27M_P terminal of the NFC chip MU2 and the first terminal of the thirteenth metal capacitor MC13, respectively. The second terminal of the twelfth metal capacitor MC12 is connected to the GND terminal of the third crystal oscillator Y3 and then grounded. The second terminal of the thirteenth metal capacitor MC13 is connected to the GND terminal of the third crystal oscillator Y3 and then grounded.

[0042] like Figure 4 and Figure 6 As shown, the NFC antenna circuit includes an NFC antenna ANT2, a 22nd resistor R22, a 23rd resistor R23, a 41st capacitor C41, a 39th capacitor C39, a 42nd capacitor C42, a 40th capacitor C40, a 35th capacitor C35, a 37th capacitor C37, a 36th capacitor C36, a 38th capacitor C38, a 4th inductor L4, and a 5th inductor L5. The two ends of the NFC antenna ANT2 are connected to the first ends of the 22nd resistor R22 and the 23rd resistor R23, respectively. The second end of the 22nd resistor R22 is connected to the first ends of the 41st capacitor C41, the 39th capacitor C39, and the 37th capacitor C37, respectively. The second end of the 23rd resistor R23 is connected to... The first terminal of the forty-second capacitor C42, the first terminal of the fortieth capacitor C40, and the first terminal of the thirty-eighth capacitor C38 are not connected. The second terminal of the thirty-seventh capacitor C37 is connected to the first terminal of the thirty-fifth capacitor C35 and the first terminal of the fourth inductor L4, respectively. The second terminal of the fourth inductor L4 is connected to the TX1 terminal of the NFC chip MU2. The first terminal of the thirty-sixth capacitor C36 is connected to the second terminal of the thirty-eighth capacitor C38. The second terminal of the thirty-eighth capacitor C38 is connected to the first terminal of the fifth inductor L5. The second terminal of the fifth inductor L5 is connected to the TX2 terminal of the NFC chip MU2. The second terminals of the forty-first capacitor C41, the thirty-ninth capacitor C39, the forty-second capacitor C42, and the fortieth capacitor C40 are all grounded.

[0043] like Figure 7As shown, the screen driving circuit includes a first MOSFET Q1, a first inductor L1, a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, a fourth capacitor C4, a fifth capacitor C5, a seventeenth capacitor C17, a twenty-sixth capacitor C26, a second resistor R2, a third resistor R3, and a fourth resistor R4. The first terminal of the fourth resistor R4 is connected to the power output terminal VCC of the battery and the first terminal of the twenty-sixth capacitor C26, respectively. The second terminal of the fourth resistor R4 is connected to the first terminal of the first inductor L1, the first terminal of the fifth capacitor C5, and the first terminal of the seventeenth capacitor C17, respectively. The second terminal of the first inductor L1 is connected to the drain of the first MOSFET Q1, the anode of the third diode D3, and the first terminal of the first capacitor C1. The second terminal of the first capacitor C1 is connected to the cathode of the first diode D1 and the anode of the second diode D2. The source of the first MOSFET Q1 is connected to the first terminal of the third resistor R3. The gate of the first MOSFET Q1 is connected to the first terminal of the second resistor R2. The second terminals of the second resistor R2, the third resistor R3, the anode of the first diode D1, the second terminals of the fourth capacitor C4, the fifth capacitor C5, and the seventeenth capacitor C17 are all grounded.

[0044] like Figure 2 and Figure 8 As shown, the DIS_BUSY terminal of the electronic paper display J1 is connected to the GPIO09 terminal of the Bluetooth chip MU1; the DIS_RES terminal of the electronic paper display J1 is connected to the GPIO10 terminal of the Bluetooth chip MU1; the DIS_D / C terminal of the electronic paper display J1 is connected to the GPIO20 terminal of the Bluetooth chip MU1; the DIS_CS terminal of the electronic paper display J1 is connected to the GPIO22 terminal of the Bluetooth chip MU1; the SCL terminal of the electronic paper display J1 is connected to the GPIO15 terminal of the Bluetooth chip MU1; the SDA terminal of the electronic paper display J1 is connected to the GPIO21 terminal of the Bluetooth chip MU1; the PREVGL terminal of the electronic paper display J1 is connected to the cathode of the second diode D2; the PREVGH terminal of the electronic paper display J1 is connected to the cathode of the third diode D3; the RESE terminal of the electronic paper display J1 is connected to the source of the first MOSFET Q1; and the GDR terminal of the electronic paper display J1 is connected to the gate of the first MOSFET Q1.

[0045] like Figure 2 and Figure 9As shown, the RGB indicator circuit includes an RGB indicator D4, a twelfth resistor R12, a fourteenth resistor R14, and a fifteenth resistor R15. The power output terminal VCC of the battery is connected to the input terminal of the RGB indicator D4. The first output terminal of the RGB indicator D4 is connected in series with the twelfth resistor R12 and then connected to the GPIO08 terminal of the Bluetooth chip MU1. The second output terminal of the RGB indicator D4 is connected in series with the fourteenth resistor R14 and then connected to the GPIO03 terminal of the Bluetooth chip MU1. The fourth output terminal of the RGB indicator D4 is connected in series with the fifteenth resistor R15 and then connected to the GPIO08 terminal of the Bluetooth chip MU1.

[0046] The working principle of this utility model is as follows:

[0047] like Figure 1-9 As shown, after the electronic shelf positioning tag is installed, its main control Bluetooth chip MU1, under the system initialization command, controls the NFC chip MU2 through the IC bus. The NFC chip MU2 drives the NFC antenna circuit composed of the fourth inductor L4, the fifth inductor L5, and the thirty-fifth capacitor C35 to the thirty-eighth capacitor C38 through its TX1 / TX2 terminals to read and decode the encoded information of the corresponding NFC tag on the back rail of the tag, thereby completing the initial position acquisition. After that, the system enters a low-power sleep state, and the 2D accelerometer SU3 powered by the battery continuously monitors the displacement. Once SU3 detects movement, it wakes up the Bluetooth chip MU1 through an interrupt signal. The Bluetooth chip MU1 then restarts the above NFC reading and position update process, and sends the new position to the Bluetooth gateway through the radio frequency antenna circuit composed of the third inductor L3, the second multilayer inductor ML2 to the fourth multilayer inductor ML4, and the eighth capacitor C8 and the ninth capacitor C9, ultimately realizing the automatic tracking and management of the product position.

[0048] like Figure 10 As shown, multiple NFC tags are arranged on the guide rail according to the spacing between storage locations. Each NFC tag corresponds to a unique shelf, shelf, and storage location number. The electronic shelf tags are installed on the guide rail and the information of the corresponding NFC tag is read through the NFC antenna. The gateway communicates with the electronic shelf tags via Bluetooth and connects to the cloud platform via Ethernet. The PC connects to the cloud platform via Ethernet, and the handheld device connects to the cloud platform via WIFI. Managers can access the cloud platform through PC or handheld device to obtain the product location information associated with the electronic shelf tags, thereby realizing the rapid location and management of products.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. An electronic shelf positioning label, characterized in that, The tag includes a Bluetooth chip, an RF antenna circuit, an NFC tag read / write circuit, an NFC antenna circuit, a battery, a screen driver circuit, an electronic paper display, a 2D accelerometer sensor circuit, a storage circuit, and an RGB indicator circuit. The Bluetooth chip is communicatively connected to the RF antenna circuit, screen driver circuit, 2D accelerometer sensor circuit, storage circuit, and NFC tag read / write circuit. The screen driver circuit is communicatively connected to the electronic paper display. The signal output terminal of the NFC tag read / write circuit is connected to the signal input terminal of the NFC antenna circuit. The power output terminal of the battery is connected to the power input terminals of the Bluetooth chip, NFC tag read / write circuit, and screen driver circuit, providing operating power for these components. The Bluetooth chip is also communicatively connected to the RGB indicator circuit to control its display status.

2. The electronic shelf-locating tag of claim 1, wherein, The radio frequency antenna circuit includes a third inductor, a second multilayer inductor, a third multilayer inductor, a fourth multilayer inductor, an eighth capacitor, a ninth capacitor, an eleventh metal capacitor, and an antenna. The first end of the third multilayer inductor is connected to the first end of the fourth multilayer inductor and the RF terminal of the Bluetooth chip. The second end of the third multilayer inductor is connected to the first end of the second multilayer inductor and the first end of the eleventh metal capacitor. The second end of the second multilayer inductor is connected to the first end of the third inductor and the first end of the ninth capacitor. The second end of the third inductor is connected to the antenna and the first end of the eighth capacitor. The second ends of the eighth capacitor, the ninth capacitor, the eleventh metal capacitor, and the fourth multilayer inductor are all grounded.

3. The electronic shelf-locating tag of claim 2, wherein, The 2D accelerometer circuit includes a 2D accelerometer, a seventh metal resistor, and an eighth metal resistor. The power output terminal of the battery is connected to the first terminal of the seventh metal resistor and the first terminal of the eighth metal resistor, respectively. The second terminal of the seventh metal resistor is connected to the CS terminal of the 2D accelerometer, and the second terminal of the eighth metal resistor is connected to the SDO / SAO terminal of the 2D accelerometer.

4. The electronic shelf-locating tag of claim 3, wherein, The NFC tag reading and writing circuit includes an NFC tag reading and writing circuit and a crystal oscillator circuit. The crystal oscillator circuit is communicatively connected to the NFC tag reading and writing circuit. The NFC tag reading and writing circuit is communicatively connected to the Bluetooth chip. The signal output terminal of the NFC tag reading and writing circuit is connected to the signal input terminal of the NFC antenna circuit.

5. The electronic shelf-locating tag of claim 4, wherein, The NFC tag read / write circuit includes an NFC chip, a twentieth resistor, a thirtieth capacitor, a twenty-eighth resistor, a twenty-seventh resistor, a twenty-sixth resistor, a twenty-first resistor, a thirty-first capacitor, a thirty-second capacitor, a thirty-third capacitor, a thirty-fourth capacitor, a forty-third capacitor, a forty-fourth capacitor, a twenty-fourth resistor, and a twenty-fifth resistor. The power output terminal of the battery is connected to the first terminal of the twentieth resistor and the first terminal of the thirtieth capacitor, respectively. The second terminal of the twentieth resistor is connected to the first terminal of the twenty-first resistor, the first terminal of the thirty-first capacitor, the first terminal of the thirty-second capacitor, the PVDD terminal of the NFC chip, the DVDD terminal of the NFC chip, the first terminal of the twenty-eighth resistor, and the second terminal of the twenty-seventh resistor, respectively. One end of the NFC chip is connected to the first end of the 26th resistor, the first end of the 33rd capacitor, the first end of the 34th capacitor, the SVDD terminal of the NFC chip, the first end of the 43rd capacitor, the first end of the 44th capacitor, and the AVDD terminal of the NFC chip. The second ends of the 30th capacitor, the 31st capacitor, the 32nd capacitor, the 33rd capacitor, the 34th capacitor, the 43rd capacitor, the 44th capacitor, the DVSS terminal of the NFC chip, and the PVSS terminal of the NFC chip are all grounded. The RX terminal of the NFC chip is connected to the first end of the 24th resistor and the first end of the 25th resistor. The second end of the 24th resistor is connected to the VM ID terminal of the NFC chip. The second end of the 25th resistor is connected to the first end of the 45th capacitor. The IRQ terminal of the NFC chip is connected to the GPIO07 terminal of the Bluetooth chip. The S_SDA terminal of the NFC chip is connected to the GPIO11 terminal of the Bluetooth chip. The S_SCL terminal of the NFC chip is connected to the GPIO12 terminal of the Bluetooth chip. The NRT terminal of the NFC chip is connected to the GPIO14 terminal of the Bluetooth chip.

6. The electronic shelf-locating tag of claim 5, wherein, The crystal oscillator circuit includes a third crystal oscillator, a twelfth metal capacitor, and a thirteenth metal capacitor. The IN terminal of the third crystal oscillator is connected to the XTAL27M_N terminal of the NFC chip and the first terminal of the twelfth metal capacitor, respectively. The OUT terminal of the third crystal oscillator is connected to the XTAL27M_P terminal of the NFC chip and the first terminal of the thirteenth metal capacitor, respectively. The second terminal of the twelfth metal capacitor is connected to the GND terminal of the third crystal oscillator and then grounded. The second terminal of the thirteenth metal capacitor is connected to the GND terminal of the third crystal oscillator and then grounded.

7. The electronic shelf-locating tag of claim 6, wherein, The NFC antenna circuit includes an NFC antenna, a 22nd resistor, a 23rd resistor, a 41st capacitor, a 39th capacitor, a 42nd capacitor, a 40th capacitor, a 35th capacitor, a 37th capacitor, a 36th capacitor, a 38th capacitor, a 4th inductor, and a 5th inductor. The two ends of the NFC antenna are connected to the first ends of the 22nd and 23rd resistors, respectively. The second end of the 22nd resistor is connected to the first ends of the 41st, 39th, and 37th capacitors, respectively. The second end of the 23rd resistor is connected to the first ends of the 42nd, 40th, and 38th capacitors, respectively. The second end of the 37th capacitor is connected to the first end of the 35th capacitor and the first end of the 4th inductor, respectively. The second end of the 4th inductor is connected to the TX1 terminal of the NFC chip. The first end of the 36th capacitor is connected to the second end of the 38th capacitor. The second end of the 38th capacitor is connected to the first end of the 5th inductor. The second end of the 5th inductor is connected to the TX2 terminal of the NFC chip. The second ends of the 41st, 39th, 42nd, and 40th capacitors are all grounded.

8. The electronic shelf-locating tag of claim 7, wherein, The screen driving circuit includes a first MOSFET, a first inductor, a first diode, a second diode, a third diode, a first capacitor, a second capacitor, a fourth capacitor, a fifth capacitor, a seventeenth capacitor, a twenty-sixth capacitor, a second resistor, a third resistor, and a fourth resistor. The first terminal of the fourth resistor is connected to the power output terminal of the battery and the first terminal of the twenty-sixth capacitor. The second terminal of the fourth resistor is connected to the first terminal of the first inductor, the first terminal of the fifth capacitor, and the first terminal of the seventeenth capacitor. The second terminal of the first inductor is connected to the drain of the first MOSFET, the anode of the third diode, and the first terminal of the first capacitor. The second terminal of the first capacitor is connected to the cathode of the first diode and the anode of the second diode. The source of the first MOSFET is connected to the first terminal of the third resistor. The gate of the first MOSFET is connected to the first terminal of the second resistor. The second terminals of the second resistor, the third resistor, the anode of the first diode, the second terminals of the fourth capacitor, the second terminals of the fifth capacitor, and the second terminals of the seventeenth capacitor are all grounded.

9. The electronic shelf-locating tag of claim 8, wherein, The DIS_BUSY terminal of the electronic paper display is connected to the GPIO09 terminal of the Bluetooth chip; the DIS_RES terminal of the electronic paper display is connected to the GPIO10 terminal of the Bluetooth chip; the DIS_D / C terminal of the electronic paper display is connected to the GPIO20 terminal of the Bluetooth chip; the DIS_CS terminal of the electronic paper display is connected to the GPIO22 terminal of the Bluetooth chip; the SCL terminal of the electronic paper display is connected to the GPIO15 terminal of the Bluetooth chip; the SDA terminal of the electronic paper display is connected to the GPIO21 terminal of the Bluetooth chip; the PREVGL terminal of the electronic paper display is connected to the cathode of the second diode; the PREVGH terminal of the electronic paper display is connected to the cathode of the third diode; the RESE terminal of the electronic paper display is connected to the source of the first MOSFET; and the GDR terminal of the electronic paper display is connected to the gate of the first MOSFET.

10. The electronic shelf-locating tag of claim 9, wherein, The RGB indicator circuit includes an RGB indicator light, a twelfth resistor, a fourteenth resistor, and a fifteenth resistor. The power output terminal of the battery is connected to the input terminal of the RGB indicator light. The first output terminal of the RGB indicator light is connected to the GPIO08 terminal of the Bluetooth chip after being connected in series with the twelfth resistor. The second output terminal of the RGB indicator light is connected to the GPIO03 terminal of the Bluetooth chip after being connected in series with the fourteenth resistor. The fourth output terminal of the RGB indicator light is connected to the GPIO08 terminal of the Bluetooth chip after being connected in series with the fifteenth resistor.

Images