Asset tracking circuit for honeycomb paper label

Abstract

The invention discloses an asset tracking circuit for a honeycomb paper label. The asset tracking circuit comprises a main control circuit, an LED display circuit, a storage circuit, a battery circuit, a DCDC boost circuit, a key circuit, a tearing alarm circuit, a temperature sensor circuit, an acceleration sensor circuit and a voltage monitoring circuit. According to the asset tracking circuit for the honeycomb paper label, flexible selection and switching of an Internet of Things mobile communication LTE.M network and a low-power-consumption long-distance communication NB-I oT network are supported, and long-distance real-time transmission of data is achieved; meanwhile, a GNSS satellite positioning technology is supported, positioning limitation and limitation of an Internet of Things wireless short-distance positioning technology such as Bluetooth and Wi-Fi are made up, in addition, the tag ingeniously achieves a tearing alarm function by using an easily-torn conductive material, has functions of impact monitoring, temperature monitoring, battery voltage monitoring and data storage, and is convenient to use. The honeycomb paper label can be widely applied to intelligent storage, logistics tray management, intelligent air transportation and intelligent sea transportation scenes, and helps Internet of Things users to realize real-time tracking and state monitoring of asset positions in the whole logistics supply chain process.

Description

Technical Field

[0001] The present invention belongs to the technical field of tags, and particularly relates to an asset tracking circuit for honeycomb paper tags. Background Art

[0002] Currently, honeycomb trackers on the market generally have the following disadvantages: their design shapes are mostly the same, and the product volume is large. Many only have GPS function, and in places where the GPS signal is poor, global positioning cannot be well achieved, the supported network communication methods are single, the usage range is small, global multi-region usage cannot be realized, the network security and reliability are poor, the device deployment concealment is poor, it is vulnerable to external damage or breakage, there is no collision alarm prompt, no temperature monitoring function, no data storage, the tearing alarm method is complex, the tearing alarm deployment operation is complex, the production process cycle is long, and the cost is high. Summary of the Invention

[0003] In view of this, the main object of the present invention is to provide an asset tracking circuit for honeycomb paper tags.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] The embodiment of the present invention provides an asset tracking circuit for honeycomb paper tags. The asset tracking circuit includes a main control circuit, an LED display circuit, a storage circuit, a battery circuit, a DCDC boost circuit, a key circuit, a tearing alarm circuit, a temperature sensor circuit, an acceleration sensor circuit, and a voltage monitoring circuit. The main control circuit is respectively connected to the input end of the LED display circuit, the output end of the DCDC boost circuit, the output end of the key circuit, and the output end of the tearing alarm circuit. The main control circuit is communicatively connected to the acceleration sensor circuit, the storage circuit, and the temperature sensor circuit. The output end of the battery circuit is connected to the input end of the DCDC boost circuit. The main control circuit has communication and positioning functions and is connected to an on-board LTE antenna circuit and an on-board GPS antenna circuit.

[0006] In the above solution, the battery circuit includes a battery, a sixth resistor, a twentieth capacitor, a twenty-first capacitor, and a twenty-second capacitor. The positive electrode of the battery is connected to the first end of the sixth resistor. The second end of the sixth resistor is respectively connected to the first ends of the twentieth capacitor, the twenty-first capacitor, and the twenty-second capacitor. The negative electrode of the battery is respectively connected to the second ends of the twentieth capacitor, the twenty-first capacitor, and the twenty-second capacitor and then grounded.

[0007] In the above solution, the DCDC boost circuit includes a sixth inductor, a boost chip, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a ninth capacitor, a tenth capacitor, a diode, a 3.6V voltage output terminal, and a 3.3V voltage output terminal. The first end of the sixth inductor is connected to the first end of the twenty-second capacitor, the IN terminal of the boost chip, and the first end of the seventh resistor respectively. The second end of the sixth inductor is connected to the LX terminal of the boost chip. The second end of the seventh resistor is connected to the EN terminal of the boost chip. The OUT terminal of the boost chip is connected to the first end of the eighth resistor, the first end of the ninth capacitor, the first end of the tenth capacitor, and the first end of the tenth resistor respectively. The FB terminal of the boost chip is connected to the second end of the eighth resistor, the first end of the ninth resistor, and the second end of the ninth capacitor respectively. The second end of the tenth resistor is connected to the 3.6V voltage output terminal and the positive electrode of the diode respectively. The negative electrode of the diode is connected to the 3.3V voltage output terminal. The second ends of the ninth resistor and the tenth capacitor are both grounded.

[0008] In the above solution, the main control circuit includes a wireless transceiver chip, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a nineteenth capacitor, a twenty-third capacitor, a twenty-fourth capacitor, a twenty-fifth capacitor, a first inductor, and a nineteenth resistor. The first end of the twenty-third capacitor is connected to the first end of the twenty-fourth capacitor, the first end of the twenty-fifth capacitor, the first end of the nineteenth resistor, the VDD1 terminal of the wireless transceiver chip, and the 3.6V voltage output terminal respectively. The second ends of the twenty-third capacitor, the twenty-fourth capacitor, and the twenty-fifth capacitor are all grounded. The second end of the nineteenth resistor is connected to the ENABLE terminal of the wireless transceiver chip. The first end of the seventeenth capacitor is connected to the 3.6V voltage output terminal and the VDD2 terminal of the wireless transceiver chip respectively. The second end of the seventeenth capacitor is grounded. The first end of the twelfth capacitor is connected to the first end of the thirteenth capacitor, the VDD_GPIO terminal of the wireless transceiver chip, and the 3.3V voltage output terminal respectively. The second ends of the twelfth capacitor and the thirteenth capacitor are both grounded. The first end of the fourteenth capacitor is connected to the DEC0 terminal of the wireless transceiver chip. The second end of the fourteenth capacitor is grounded. The first end of the nineteenth capacitor is connected to the first end of the first inductor and the GPS terminal of the wireless transceiver chip respectively. The second end of the nineteenth capacitor is grounded. The second end of the first inductor is connected to the first end of the eighteenth capacitor. The second end of the eighteenth capacitor is grounded. The GND_Shield terminal of the wireless transceiver chip is grounded.

[0009] In the above solution, the LTE antenna circuit includes a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and a first antenna. The first end of the second inductor is connected to the ANT end of the wireless transceiver chip and the first end of the first capacitor respectively. The second end of the second inductor is connected to the first end of the third inductor, the first end of the second capacitor, and the first end of the third capacitor respectively. The second end of the third inductor is connected to the first end of the fourth capacitor and the first antenna respectively. The second ends of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are all grounded.

[0010] In the above solution, the GPS antenna circuit includes a low-noise amplifier chip, a first resistor, a second resistor, a fourth inductor, a fifth inductor, a fifth capacitor, a sixth capacitor, a seventh capacitor, and a GPS antenna. The first end of the second resistor is connected to the 3.3V voltage output terminal. The second end of the second resistor is connected to the SHDN end and the VDD end of the low-noise amplifier chip respectively. The first end of the first resistor is connected to the second end of the first inductor. The second end of the first resistor is connected to the RFOUT end of the low-noise amplifier chip. The RFIN end of the low-noise amplifier chip is connected to the first end of the fifth inductor and the first end of the fifth capacitor respectively after being serially connected with the seventh capacitor and the fourth inductor in sequence. The second end of the fifth inductor is connected to the GPS antenna and the first end of the sixth capacitor respectively. The second ends of the fifth capacitor and the sixth capacitor are both grounded.

[0011] In the above solution, the LED display circuit includes a third resistor, a fourth resistor, a first light-emitting diode, and a second light-emitting diode. The first end of the third resistor is connected to the P0.09 end of the wireless transceiver chip. The second end of the third resistor is connected to the positive electrode of the first light-emitting diode. The negative electrodes of the first light-emitting diode and the second light-emitting diode are connected and then grounded. The first end of the fourth resistor is connected to the P0.08 end of the wireless transceiver chip. The second end of the fourth resistor is connected to the positive electrode of the second light-emitting diode.

[0012] In the above solution, the storage circuit includes a storage chip, an eighth capacitor, and a fifth resistor. The first end of the fifth resistor is connected to the 3.3V voltage output terminal, the first end of the eighth capacitor, and the VCC terminal of the storage chip. The second end of the eighth capacitor is connected to the GND terminal of the storage chip and then grounded. The second end of the fifth resistor is connected to the HOLD terminal of the storage chip. The Flash_CS terminal of the storage chip is connected to the P0.19 terminal of the wireless transceiver chip. The Flash_DO terminal of the storage chip is connected to the P0.18 terminal of the wireless transceiver chip. The Flash_CLK terminal of the storage chip is connected to the P0.16 terminal of the wireless transceiver chip. The Flash_DI terminal of the storage chip is connected to the P0.17 terminal of the wireless transceiver chip. The WP terminal of the storage chip is connected to the 3.3V voltage output terminal.

[0013] In the above solution, the key circuit includes a switch. The first end of the switch is connected to the P0.05 terminal of the wireless transceiver chip, and the second end of the switch is grounded.

[0014] In the above solution, the tearing warning circuit includes an eleventh resistor, a twelfth resistor, and an easily torn copper foil. The first end of the eleventh resistor is connected to the 3.6V voltage output terminal. The second end of the eleventh resistor is connected to the first end of the easily torn copper foil. The second end of the easily torn copper foil is connected to the ground in series with the twelfth resistor. The first end of the easily torn copper foil is connected to the P0.12 terminal of the wireless transceiver chip.

[0015] In the above solution, the temperature sensor circuit includes a temperature sensor and a thirteenth resistor. The DQ terminal of the temperature sensor is connected to the first end of the thirteenth resistor and the P0.25 terminal of the wireless transceiver chip respectively. The second end of the thirteenth resistor is connected to the P0.24 terminal of the wireless transceiver chip. The GND terminal of the temperature sensor is grounded.

[0016] In the above solution, the acceleration sensor circuit includes an acceleration sensor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a fifteenth capacitor, and a sixteenth capacitor. The 3.3V voltage output terminal is connected to the first ends of the fifteenth resistor, the sixteenth resistor, the seventeenth resistor, the fifteenth capacitor, the sixteenth capacitor, and the Vdd_IO terminal of the acceleration sensor after being connected in series with the fourteenth resistor. The second end of the fifteenth resistor is connected to the SCL / SPC terminal of the acceleration sensor. The second end of the seventeenth resistor is connected to the CS terminal of the acceleration sensor. The second end of the sixteenth resistor is connected to the SDA / SDI / SDO terminal of the acceleration sensor. The second ends of the fifteenth capacitor and the sixteenth capacitor are both grounded. The INT1 terminal of the acceleration sensor is connected to the P0.13 terminal of the wireless transceiver chip. The INT2 terminal of the acceleration sensor is connected to the P0.14 terminal of the wireless transceiver chip. The SCL / SP terminal of the acceleration sensor is connected to the P0.20 terminal of the wireless transceiver chip, and the SDA / SDI / SDO terminal of the acceleration sensor is connected to the P0.21 terminal of the wireless transceiver chip.

[0017] In the above solution, the voltage monitoring circuit includes a nineteenth resistor, a twentieth resistor, and a twenty-third capacitor. The first end of the nineteenth resistor is connected to the second end of the sixth resistor. The second end of the nineteenth resistor is connected to the first ends of the twentieth resistor, the twenty-third capacitor, and the P0.15 / AIN0 terminal of the wireless transceiver chip. The second ends of the twentieth resistor and the twenty-third capacitor are both grounded.

[0018] Compared with the prior art, the asset tracking circuit for honeycomb paper labels provided by the present invention supports flexible selection and switching between the Internet of Things mobile communication LTE-M network and the low-power long-distance communication NB-IoT network, and realizes real-time long-distance data transmission. At the same time, it supports GNSS satellite positioning technology to make up for the limitations of short-distance wireless positioning technologies such as Bluetooth and WiFi in the Internet of Things. In addition, the label cleverly realizes the tear alarm function by using easily tearable conductive materials, and has functions such as impact monitoring, temperature monitoring, battery voltage monitoring, and data storage. The honeycomb paper label can be widely used in scenarios such as intelligent warehousing, logistics pallet management, intelligent air transportation, and intelligent maritime transportation to help Internet of Things users realize real-time tracking and status monitoring of the asset location throughout the logistics supply chain process. Brief Description of the Drawings

[0019] The drawings described herein are used to disclose a further understanding of the present invention and form a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 It is the circuit structure block diagram of an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0021] Figure 2 It is the circuit schematic diagram of a wireless transceiver chip in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0022] Figure 3 It is the circuit schematic diagram of an LTE antenna circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0023] Figure 4 It is the circuit schematic diagram of a GPS antenna circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0024] Figure 5 It is the circuit schematic diagram of an LED display circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0025] Figure 6 It is the circuit schematic diagram of a storage circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0026] Figure 7 It is the circuit schematic diagram of a DCDC boost circuit and a battery circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0027] Figure 8 It is the circuit schematic diagram of a key circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0028] Figure 9 It is the circuit schematic diagram of a tear alarm circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0029] Figure 10 It is the circuit schematic diagram of a temperature sensor circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0030] Figure 11 It is the circuit schematic diagram of an acceleration sensor circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0031] Figure 12 It is the circuit schematic diagram of a battery voltage monitoring circuit in an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention;

[0032] Figure 13 It is the software logic flow schematic diagram of an asset tracking circuit for a honeycomb paper label described in an embodiment of the present invention. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention 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 only used to explain the present invention and are not used to limit the present invention.

[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 the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, article or device including that element.

[0036] An asset tracking circuit for a honeycomb paper label provided by an embodiment of the present invention is as Figures 1 - 12 shown. The asset tracking circuit includes a main control circuit, an LED display circuit, a storage circuit, a battery circuit, a DCDC boost circuit, a key circuit, a tearing alarm circuit, a temperature sensor circuit, an acceleration sensor circuit, and a voltage monitoring circuit. The main control circuit is respectively connected to the input end of the LED display circuit, the output end of the storage circuit, the output end of the DCDC boost circuit, the output end of the key circuit, the output end of the tearing alarm circuit, and the output end of the temperature sensor circuit. The main control circuit is communicatively connected to the acceleration sensor circuit. The output end of the battery circuit is connected to the input end of the DCDC boost circuit. The main control circuit has communication and positioning functions and is connected to an on-board LTE antenna circuit and an on-board GPS antenna circuit.

[0037] As Figure 2 and Figure 7As shown, the battery circuit includes a battery BT, a sixth resistor R6, a twentieth capacitor C20, a twenty-first capacitor C21, and a twenty-second capacitor C22. The positive electrode of the battery BT is connected to the first end of the sixth resistor R6. The second end of the sixth resistor R6 is respectively connected to the first ends of the twentieth capacitor C20, the twenty-first capacitor C21, and the twenty-second capacitor C22. The negative electrode of the battery BT is respectively connected to the second ends of the twentieth capacitor C20, the twenty-first capacitor C21, and the twenty-second capacitor C22 and then grounded.

[0038] As Figure 2 and Figure 7 shown, the DCDC boost circuit includes a sixth inductor L6, a boost chip U4, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a ninth capacitor C9, a tenth capacitor C10, a diode D1, a 3.6V voltage output terminal VCC_3V6, and a 3.3V voltage output terminal VCC_3V3. The first end of the sixth inductor L6 is respectively connected to the first end of the twenty-second capacitor C22, the IN terminal of the boost chip U4, and the first end of the seventh resistor R7. The second end of the sixth inductor is connected to the LX terminal of the boost chip. The second end of the seventh resistor R7 is connected to the EN terminal of the boost chip U4. The OUT terminal of the boost chip U4 is respectively connected to the first ends of the eighth resistor R8, the ninth capacitor C9, the tenth capacitor C10, and the tenth resistor R10. The FB terminal of the boost chip U4 is respectively connected to the second end of the eighth resistor R8, the first end of the ninth resistor R9, and the second end of the ninth capacitor C9. The second end of the tenth resistor R10 is respectively connected to the 3.6V voltage output terminal VCC_3V6 and the positive electrode of the diode D1. The negative electrode of the diode D1 is connected to the 3.3V voltage output terminal VCC_3V3. The second ends of the ninth resistor R9 and the tenth capacitor C10 are both grounded.

[0039] As Figure 2As shown, the main control circuit includes a wireless transceiver chip U1, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19, a twenty-third capacitor C23, a twenty-fourth capacitor C24, a twenty-fifth capacitor C25, a first inductor L1, and a nineteenth resistor R19. The first end of the twenty-third capacitor C23 is connected to the first ends of the twenty-fourth capacitor C24, the twenty-fifth capacitor C25, the nineteenth resistor R19, the VDD1 terminal of the wireless transceiver chip U1, and the 3.6V voltage output terminal. The second ends of the twenty-third capacitor C23, the twenty-fourth capacitor C24, and the twenty-fifth capacitor C25 are all grounded. The second end of the nineteenth resistor R19 is connected to the ENABLE terminal of the wireless transceiver chip U1. The first end of the seventeenth capacitor C17 is connected to the 3.6V voltage output terminal and the VDD2 terminal of the wireless transceiver chip U1. The second end of the seventeenth capacitor C17 is grounded. The first end of the twelfth capacitor C12 is connected to the first ends of the thirteenth capacitor C13, the VDD_GPIO terminal of the wireless transceiver chip U1, and the 3.3V voltage output terminal. The second ends of the twelfth capacitor C12 and the thirteenth capacitor C13 are both grounded. The first end of the fourteenth capacitor C14 is connected to the DEC0 terminal of the wireless transceiver chip U1. The second end of the fourteenth capacitor C14 is grounded. The first end of the nineteenth capacitor C19 is connected to the first end of the first inductor L1 and the GPS terminal of the wireless transceiver chip U1. The second end of the nineteenth capacitor C19 is grounded. The second end of the first inductor L1 is connected to the first end of the eighteenth capacitor C18. The second end of the eighteenth capacitor C18 is grounded. The GND_Shield terminal of the wireless transceiver chip U1 is grounded.

[0040] As Figure 2 and Figure 3 shown, the LTE antenna circuit includes a second inductor L2, a third inductor L3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a first antenna ANT1. The first end of the second inductor L2 is connected to the ANT terminal of the wireless transceiver chip U1 and the first end of the first capacitor C1. The second end of the second inductor L2 is connected to the first ends of the third inductor L3, the second capacitor C2, and the third capacitor C3. The second end of the third inductor L3 is connected to the first end of the fourth capacitor C4 and the first antenna ANT1. The second ends of the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are all grounded.

[0041] As Figure 2And Figure 4 As shown, the GPS antenna circuit includes a low-noise amplifier chip U2, a first resistor R1, a second resistor R2, a fourth inductor L4, a fifth inductor L5, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and a GPS antenna ANT_GPS1. The first end of the second resistor R2 is connected to the 3.3V voltage output terminal VCC_3V3. The second end of the second resistor R2 is respectively connected to the SHDN terminal and the VDD terminal of the low-noise amplifier chip U2. The first end of the first resistor R1 is connected to the second end of the first inductor. The second end of the first resistor R1 is connected to the RFOUT terminal of the low-noise amplifier chip U2. The RF IN terminal of the low-noise amplifier chip U2 is sequentially connected in series with the seventh capacitor C7 and the fourth inductor L4 and then respectively connected to the first end of the fifth inductor L5 and the first end of the fifth capacitor C5. The second end of the fifth inductor L5 is respectively connected to the GPS antenna ANT_GPS1 and the first end of the sixth capacitor C6. The second ends of the fifth capacitor C5 and the sixth capacitor C6 are both grounded.

[0042] As Figure 2 And Figure 5 As shown, the LED display circuit includes a third resistor R3, a fourth resistor R4, a first light-emitting diode LED1, and a second light-emitting diode LED2. The first end of the third resistor R3 is connected to the P0.09 terminal of the wireless transceiver chip U1. The second end of the third resistor R3 is connected to the positive electrode of the first light-emitting diode LED1. The negative electrodes of the first light-emitting diode LED1 and the second light-emitting diode LED2 are connected and then grounded. The first end of the fourth resistor R4 is connected to the P0.08 terminal of the wireless transceiver chip U1. The second end of the fourth resistor R4 is connected to the positive electrode of the second light-emitting diode LED2.

[0043] As Figure 2 And Figure 6As shown, the storage circuit includes a storage chip U3, an eighth capacitor C8, and a fifth resistor R5. The first end of the fifth resistor R5 is connected to the 3.3V voltage output terminal VCC_3V3, the first end of the eighth capacitor C8, and the VCC terminal of the storage chip U3. The second end of the eighth capacitor C8 is connected to the GND terminal of the storage chip U3 and then grounded. The second end of the fifth resistor R5 is connected to the HOLD terminal of the storage chip U3. The Flash_CS terminal of the storage chip U3 is connected to the P0.19 terminal of the wireless transceiver chip U1. The Flash_DO terminal of the storage chip U3 is connected to the P0.18 terminal of the wireless transceiver chip U1. The Flash_CLK terminal of the storage chip U3 is connected to the P0.16 terminal of the wireless transceiver chip U1. The Flash_DI terminal of the storage chip U3 is connected to the P0.17 terminal of the wireless transceiver chip U1. The WP terminal of the storage chip U3 is connected to the 3.3V voltage output terminal VCC_3V3.

[0044] As Figure 2 and Figure 8 shown, the key circuit includes a switch SW1. The first end of the switch SW1 is connected to the P0.05 terminal of the wireless transceiver chip U1, and the second end of the switch SW1 is grounded.

[0045] As Figure 2 and Figure 9 shown, the tear alarm circuit includes an eleventh resistor R11, a twelfth resistor R12, and an easily tearable copper foil 22. The first end of the eleventh resistor R11 is connected to the 3.6V voltage output terminal VCC_3V6. The second end of the eleventh resistor R11 is connected to the first end of the easily tearable copper foil 22. The second end of the easily tearable copper foil 22 is connected to the ground in series with the twelfth resistor R12. The first end of the easily tearable copper foil 22 is connected to the P0.12 terminal of the wireless transceiver chip U1.

[0046] As Figure 2 and Figure 10 shown, the temperature sensor circuit includes a temperature sensor U6 and a thirteenth resistor R13. The DQ terminal of the temperature sensor U6 is connected to the first end of the thirteenth resistor R13 and the P0.25 terminal of the wireless transceiver chip U1 respectively. The second end of the thirteenth resistor R13 is connected to the P0.24 terminal of the wireless transceiver chip U1. The GND terminal of the temperature sensor U6 is grounded.

[0047] As Figure 2 and Figure 11As shown, the acceleration sensor circuit includes an acceleration sensor U5, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a fifteenth capacitor C15, and a sixteenth capacitor C16. The 3.3V voltage output terminal VCC_3V3 is connected to the first ends of the fifteenth resistor R15, the sixteenth resistor R16, the seventeenth resistor R17, the fifteenth capacitor C15, the sixteenth capacitor C16, and the Vdd_IO terminal of the acceleration sensor U5 after being connected in series with the fourteenth resistor R14. The second end of the fifteenth resistor R15 is connected to the SCL / SPC terminal of the acceleration sensor U5. The second end of the seventeenth resistor R17 is connected to the CS terminal of the acceleration sensor U5. The second end of the sixteenth resistor R16 is connected to the SDA / SDI / SDO terminal of the acceleration sensor U5. The second ends of the fifteenth capacitor C15 and the sixteenth capacitor C16 are both grounded. The INT1 terminal of the acceleration sensor U5 is connected to the P0.13 terminal of the wireless transceiver chip U1. The INT2 terminal of the acceleration sensor U5 is connected to the P0.14 terminal of the wireless transceiver chip U1. The SCL / SPC terminal of the acceleration sensor U5 is connected to the P0.20 terminal of the wireless transceiver chip U1. The SDA / SDI / SDO terminal of the acceleration sensor U5 is connected to the P0.21 terminal of the wireless transceiver chip U1.

[0048] As Figure 2 and Figure 12 shown, the voltage monitoring circuit includes a nineteenth resistor R19, a twentieth resistor R20, and a twenty-third capacitor C23. The first end of the nineteenth resistor R19 is connected to the second end of the sixth resistor. The second end of the nineteenth resistor R19 is connected to the first ends of the twentieth resistor R20, the twenty-third capacitor C23, and the P0.15 / AIN0 terminal of the wireless transceiver chip U1. The second ends of the twentieth resistor R20 and the twenty-third capacitor C23 are both grounded.

[0049] In summary, as Figures 1 - 13As shown, the overall product design is thin and light. With the material label paper shape design, it has high deployment concealment and a wide range of application scenarios. It supports GNSS network positioning and flexible switching between LTE-M / NB-IoT communication networks. It integrates acceleration monitoring and has an alarm prompt to detect whether the cellular tracker and the item have been dropped, collided during transportation and movement, and the magnitude of the external force during the collision. It integrates temperature detection to understand the ambient temperature of the cellular tracking label in real time and better know the ambient temperature of the product. It has a built-in data storage unit that can record tens of thousands of data. It has a built-in tear alarm circuit, which is convenient to use and simple to operate. It integrates voltage monitoring to monitor the battery voltage of the product in real time. The shell production process uses environmentally friendly paper materials, which not only support flexible shapes in the design, but also have a shorter development cycle and lower costs.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. An asset tracking circuit for honeycomb paper labels, characterized in that, The asset tracking circuit includes a main control circuit, an LED display circuit, a storage circuit, a battery circuit, a DCDC boost circuit, a button circuit, a tamper alarm circuit, a temperature sensor circuit, an acceleration sensor circuit, and a voltage monitoring circuit. The main control circuit is respectively connected to the input end of the LED display circuit, the output end of the DCDC boost circuit, the output end of the button circuit, and the output end of the tamper alarm circuit. The main control circuit is communicatively connected to the acceleration sensor circuit, the storage circuit, and the temperature sensor circuit. The output end of the battery circuit is connected to the input end of the DCDC boost circuit. The main control circuit has communication and positioning functions and is connected to the on-board LTE antenna circuit and the on-board GPS antenna circuit.

2. The asset tracking circuit for honeycomb paper labels according to claim 1, characterized in that The battery circuit includes a battery, a sixth resistor, a twentieth capacitor, a twenty-first capacitor, and a twenty-second capacitor. The positive electrode of the battery is connected to the first end of the sixth resistor. The second end of the sixth resistor is respectively connected to the first ends of the twentieth capacitor, the twenty-first capacitor, and the twenty-second capacitor. The negative electrode of the battery is respectively connected to the second ends of the twentieth capacitor, the twenty-first capacitor, and the twenty-second capacitor and then grounded. The DCDC boost circuit includes a sixth inductor, a boost chip, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a ninth capacitor, a tenth capacitor, a diode, a 3.6V voltage output terminal, and a 3.3V voltage output terminal. The first end of the sixth inductor is respectively connected to the first end of the twenty-second capacitor, the IN terminal of the boost chip, and the first end of the seventh resistor. The second end of the sixth inductor is connected to the LX terminal of the boost chip. The second end of the seventh resistor is connected to the EN terminal of the boost chip. The OUT terminal of the boost chip is respectively connected to the first ends of the eighth resistor, the ninth capacitor, the tenth capacitor, and the tenth resistor. The FB terminal of the boost chip is respectively connected to the second end of the eighth resistor, the first end of the ninth resistor, and the second end of the ninth capacitor. The second end of the tenth resistor is respectively connected to the 3.6V voltage output terminal and the positive electrode of the diode. The negative electrode of the diode is connected to the 3.3V voltage output terminal. The second ends of the ninth resistor and the tenth capacitor are both grounded.

3. The asset tracking circuit for honeycomb paper labels according to claim 2, wherein The main control circuit includes a wireless transceiver chip, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a seventeenth capacitor, an eighteenth capacitor, a nineteenth capacitor, a twenty-third capacitor, a twenty-fourth capacitor, a twenty-fifth capacitor, a first inductor, and a nineteenth resistor. The first end of the twenty-third capacitor is respectively connected to the first ends of the twenty-fourth capacitor, the twenty-fifth capacitor, the nineteenth resistor, the VDD1 terminal of the wireless transceiver chip, and the 3.6V voltage output terminal. The second ends of the twenty-third capacitor, the twenty-fourth capacitor, and the twenty-fifth capacitor are all grounded. The second end of the nineteenth resistor is connected to the ENABLE terminal of the wireless transceiver chip. The first end of the seventeenth capacitor is respectively connected to the 3.6V voltage output terminal and the VDD2 terminal of the wireless transceiver chip. The second end of the seventeenth capacitor is grounded. The first end of the twelfth capacitor is respectively connected to the first ends of the thirteenth capacitor, the VDD_GPIO terminal of the wireless transceiver chip, and the 3.3V voltage output terminal. The second ends of the twelfth capacitor and the thirteenth capacitor are both grounded. The first end of the fourteenth capacitor is connected to the DEC0 terminal of the wireless transceiver chip. The second end of the fourteenth capacitor is grounded. The first end of the nineteenth capacitor is respectively connected to the first end of the first inductor and the GPS terminal of the wireless transceiver chip. The second end of the nineteenth capacitor is grounded. The second end of the first inductor is connected to the first end of the eighteenth capacitor. The second end of the eighteenth capacitor is grounded. The GND_Shield terminal of the wireless transceiver chip is grounded.

4. The asset tracking circuit for honeycomb paper labels according to claim 3, characterized in that, The LTE antenna circuit includes a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and a first antenna. The first end of the second inductor is respectively connected to the ANT terminal of the wireless transceiver chip and the first end of the first capacitor. The second end of the second inductor is respectively connected to the first ends of the third inductor, the second capacitor, and the third capacitor. The second end of the third inductor is respectively connected to the first end of the fourth capacitor and the first antenna. The second ends of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are all grounded. The GPS antenna circuit includes a low-noise amplifier chip, a first resistor, a second resistor, a fourth inductor, a fifth inductor, a fifth capacitor, a sixth capacitor, a seventh capacitor, and a GPS antenna. The first end of the second resistor is connected to the 3.3V voltage output terminal. The second end of the second resistor is respectively connected to the SHDN terminal and the VDD terminal of the low-noise amplifier chip. The first end of the first resistor is connected to the second end of the first inductor. The second end of the first resistor is connected to the RFOUT terminal of the low-noise amplifier chip. The RF IN terminal of the low-noise amplifier chip is successively connected in series with the seventh capacitor and the fourth inductor and then respectively connected to the first end of the fifth inductor and the first end of the fifth capacitor. The second end of the fifth inductor is respectively connected to the GPS antenna and the first end of the sixth capacitor. The second ends of the fifth capacitor and the sixth capacitor are both grounded.

5. The asset tracking circuit for honeycomb paper labels according to claim 4, characterized in that, The LED display circuit includes a third resistor, a fourth resistor, a first light-emitting diode, and a second light-emitting diode. The first end of the third resistor is connected to the P0.09 terminal of the wireless transceiver chip. The second end of the third resistor is connected to the positive electrode of the first light-emitting diode. The negative electrodes of the first light-emitting diode and the second light-emitting diode are connected and then grounded. The first end of the fourth resistor is connected to the P0.08 terminal of the wireless transceiver chip. The second end of the fourth resistor is connected to the positive electrode of the second light-emitting diode.

6. The asset tracking circuit for honeycomb paper labels according to claim 5, characterized in that, The storage circuit includes a storage chip, an eighth capacitor, and a fifth resistor. The first end of the fifth resistor is respectively connected to the 3.3V voltage output terminal, the first end of the eighth capacitor, and the VCC terminal of the storage chip. The second end of the eighth capacitor is connected to the GND terminal of the storage chip and then grounded. The second end of the fifth resistor is connected to the HOLD terminal of the storage chip. The Flash_CS terminal of the storage chip is connected to the P0.19 terminal of the wireless transceiver chip. The Flash_DO terminal of the storage chip is connected to the P0.18 terminal of the wireless transceiver chip. The Flash_CLK terminal of the storage chip is connected to the P0.16 terminal of the wireless transceiver chip. The Flash_DI terminal of the storage chip is connected to the P0.17 terminal of the wireless transceiver chip. The WP terminal of the storage chip is connected to the 3.3V voltage output terminal; The key circuit includes a switch. The first end of the switch is connected to the P0.05 terminal of the wireless transceiver chip. The second end of the switch is grounded.

7. The asset tracking circuit for honeycomb paper labels according to claim 6, characterized in that, The tear alarm circuit includes an eleventh resistor, a twelfth resistor, and an easily torn copper foil. The first end of the eleventh resistor is connected to the 3.6V voltage output terminal. The second end of the eleventh resistor is connected to the first end of the easily torn copper foil. The second end of the easily torn copper foil is connected in series with the twelfth resistor and then grounded. The first end of the easily torn copper foil is connected to the P0.12 terminal of the wireless transceiver chip.

8. The asset tracking circuit for honeycomb paper labels according to claim 7, wherein, The temperature sensor circuit includes a temperature sensor and a thirteenth resistor. The DQ terminal of the temperature sensor is respectively connected to the first terminal of the thirteenth resistor and the P0.25 terminal of the wireless transceiver chip. The second terminal of the thirteenth resistor is connected to the P0.24 terminal of the wireless transceiver chip. The GND terminal of the temperature sensor is grounded.

9. The asset tracking circuit for honeycomb paper labels according to claim 8, characterized in that, The acceleration sensor circuit includes an acceleration sensor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a fifteenth capacitor, and a sixteenth capacitor. The 3.3V voltage output terminal is connected to the first terminals of the fifteenth resistor, the sixteenth resistor, the seventeenth resistor, the fifteenth capacitor, the sixteenth capacitor, and the Vdd_IO terminal of the acceleration sensor after being connected in series with the fourteenth resistor. The second terminal of the fifteenth resistor is connected to the SCL / SPC terminal of the acceleration sensor. The second terminal of the seventeenth resistor is connected to the CS terminal of the acceleration sensor. The second terminal of the sixteenth resistor is connected to the SDA / SDI / SDO terminal of the acceleration sensor. The second terminals of the fifteenth capacitor C15 and the sixteenth capacitor C16 are both grounded. The INT1 terminal of the acceleration sensor is connected to the P0.13 terminal of the wireless transceiver chip. The INT2 terminal of the acceleration sensor is connected to the P0.14 terminal of the wireless transceiver chip. The SCL / SP terminal of the acceleration sensor is connected to the P0.20 terminal of the wireless transceiver chip. The SDA / SDI / SDO terminal of the acceleration sensor is connected to the P0.21 terminal of the wireless transceiver chip.

10. The asset tracking circuit for honeycomb paper labels according to claim 9, characterized in that, The voltage monitoring circuit includes a nineteenth resistor, a twentieth resistor, and a twenty-third capacitor. The first terminal of the nineteenth resistor is connected to the second terminal of the sixth resistor. The second terminal of the nineteenth resistor is respectively connected to the first terminal of the twentieth resistor, the first terminal of the twenty-third capacitor, and the P0.15 / AIN0 terminal of the wireless transceiver chip. The second terminals of the twentieth resistor and the twenty-third capacitor are both grounded.

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