Intelligent express sheet circuit suitable for transportation of valuable and vulnerable articles

Abstract

The invention discloses an intelligent express sheet circuit suitable for transportation of valuable and vulnerable articles. The intelligent express sheet circuit comprises a Bluetooth chip, a power circuit, an LTE module circuit, a storage circuit, a temperature and humidity sensor circuit, an acceleration sensor circuit, an atmospheric pressure sensor circuit, a magnetron circuit, a key circuit, an electronic paper screen circuit, an RGB indicator lamp circuit and a buzzer circuit. The system can be automatically connected with a nearby existing 4G base station and is connected with a cloud management platform, a cargo owner can directly carry out remote management control on cargos, multiple positioning systems are supported to realize optimal global positioning and motion track recording, and in the transportation and loading and unloading processes of logistics, the logistics management and management can be conveniently carried out. The altitude, the air pressure, the temperature and the humidity of the goods are collected and recorded, the magnitude of force borne by the goods in the collision and falling process is detected, alarming can be conducted in multiple modes in time when the magnitude exceeds a set data threshold value, and it is guaranteed that the whole transportation process is more accurate, comprehensive, safe and automatic.

Description

Technical Field

[0001] The present invention relates to the technical field of waybills, and particularly to an intelligent waybill circuit applicable to the transportation of valuable and fragile items. Background Art

[0002] With the industrial upgrading of the country, more and more products such as large-size liquid crystal display screens, new energy batteries, and high-precision electronic devices are going global. The monitoring of the logistics transportation of valuable, fragile, and dangerous items requires higher transportation conditions than ordinary items. If it is for global transportation but without good storage and transportation conditions, a large amount of loss will occur after transportation, thus affecting the enterprise cost. By constructing a logistics monitoring system and cooperating with a distribution management system, valuable and fragile items can be efficiently, safely, and reassuringly transported to the destination or the customer.

[0003] Therefore, the global distribution monitoring of valuable, fragile, and dangerous items has become an indispensable requirement and management means. Summary of the Invention

[0004] In view of this, the main object of the present invention is to provide an intelligent waybill circuit applicable to the transportation of valuable and fragile items.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] An embodiment of the present invention provides an intelligent waybill circuit applicable to the transportation of valuable and fragile items, including a Bluetooth chip, a power supply circuit, an LTE module circuit, a storage circuit, a temperature and humidity sensor circuit, an acceleration sensor circuit, an atmospheric pressure sensor circuit, a magnetron circuit, a key circuit, an electronic paper screen circuit, an RGB indicator light circuit, and a buzzer circuit. The power supply circuit is used to convert the 5V voltage into 3V voltage for power supply. The Bluetooth chip is respectively communicatively connected with the LTE module circuit, the storage circuit, the temperature and humidity sensor circuit, the acceleration sensor circuit, the atmospheric pressure sensor circuit, the magnetron circuit, the key circuit, the electronic paper screen circuit, the RGB indicator light circuit, and the buzzer circuit.

[0007] In the above solution, the power supply circuit includes a lithium battery, a charging management circuit, a USB input current limiting circuit, and a DCDC circuit. The lithium battery is connected to the input end of the charging management circuit for charging the lithium battery. The USB input current limiting circuit is connected in parallel with the charging management circuit for limiting the current to prevent overcharging. The DCDC circuit is connected to the output end of the charging management circuit for converting the 5V voltage into 3V voltage;

[0008] The charging management circuit includes a charging management chip, a USB interface, a thirty-ninth resistor, a forty-seventh resistor, a forty-eighth resistor, a forty-ninth resistor, a fifty-third resistor, a fifty-fourth resistor, a second capacitor, a fourteenth capacitor, a first light-emitting diode, a second light-emitting diode, a sixth inductor, and a 5V output terminal. The USB interface is connected to the first end of the fifty-third resistor. The second end of the fifty-third resistor is respectively connected to the P1.02 terminal of the Bluetooth chip and the first end of the fifty-fourth resistor. The second end of the fifty-fourth resistor is grounded. The positive electrode of the lithium battery is respectively connected to the first end of the fourteenth capacitor, the first end of the second capacitor, the first end of the sixth inductor, and the VBAT terminal of the charging management chip. The negative electrode of the lithium battery is respectively connected to the second end of the fourteenth capacitor and the second end of the second capacitor. The second end of the sixth inductor is connected to the SW terminal of the charging management chip. The IND terminal of the charging management chip is respectively connected to the first end of the forty-seventh resistor, the first end of the forty-eighth resistor, and the negative electrode of the second light-emitting diode. The second end of the forty-eighth resistor is respectively connected to the P0.24 terminal of the Bluetooth chip and the first end of the forty-ninth resistor. The second end of the forty-ninth resistor is connected to the negative electrode of the first light-emitting diode and then grounded. The positive electrode of the first light-emitting diode is connected to the second end of the forty-seventh resistor. The VIN terminal of the charging management chip is respectively connected to the first end of the thirty-ninth resistor and the 5V output terminal. The second end of the thirty-ninth resistor is connected to the positive electrode of the second light-emitting diode;

[0009] The USB input current limiting circuit includes a charging current limiting chip. The IN terminal of the charging current limiting chip is connected to the USB interface. The OUT terminal of the charging current limiting chip is connected to the 5V output terminal;

[0010] The DCDC circuit includes a DCDC conversion chip, a 3V output terminal, a sixth diode, a sixty-ninth capacitor, a thirty-sixth capacitor, a thirty-seventh capacitor, a seventy-first capacitor, and a seventy-second capacitor. The positive electrode of the sixth diode is connected to the positive electrode of the lithium battery. The negative electrode of the sixth diode is respectively connected to the first end of the sixty-ninth capacitor, the first end of the thirty-sixth capacitor, and the VIN terminal of the DCDC conversion chip. The second end of the sixty-ninth capacitor is connected to the second end of the thirty-sixth capacitor and then grounded. The VOUT terminal of the DCDC conversion chip is respectively connected to the first end of the thirty-seventh capacitor, the first end of the seventy-first capacitor, the first end of the seventy-second capacitor, and the 3V output terminal. The second end of the thirty-seventh capacitor is respectively connected to the second end of the seventy-first capacitor, the second end of the seventy-second capacitor, and the VSS terminal of the DCDC conversion chip and then grounded.

[0011] In the above solution, a 2.4G Bluetooth antenna circuit is connected to the Bluetooth chip. The 2.4G Bluetooth antenna circuit includes a sixteenth inductor, a thirteenth inductor, a tenth capacitor, a fifteenth capacitor, and an antenna. The first end of the sixteenth inductor is respectively connected to the first end of the tenth capacitor and the ANT end of the Bluetooth chip. The second end of the sixteenth inductor is respectively connected to the first end of the thirteenth inductor and the first end of the fifteenth capacitor. The second end of the thirteenth inductor is connected to the antenna. The second end of the fifteenth capacitor is grounded. The second end of the tenth capacitor is connected to the VSS_PA end of the Bluetooth chip.

[0012] In the above solution, the storage circuit includes a storage chip. The FLASH_DI end of the storage chip is connected to the P0.04 / AIN2 end of the Bluetooth chip. The FLASH_DO end of the storage chip is connected to the P0.06 end of the Bluetooth chip. The FLASH_CLK end of the storage chip is connected to the P0.26 end of the Bluetooth chip. The FLASH_CS end of the storage chip is connected to the P0.08 end of the Bluetooth chip.

[0013] In the above solution, the LTE module circuit includes an LTE chip, a level conversion chip, an LTE antenna circuit, a GNSS antenna circuit, and a SIM card circuit. The MAIN_RTS end of the LTE chip is connected to the A1 end of the level conversion chip. The RTS_MCU end of the level conversion chip is connected to the P0.14 end of the Bluetooth chip. The CTS_MCU end of the level conversion chip is connected to the P0.11 end of the Bluetooth chip. The DCD_MCU end of the level conversion chip is connected to the P1.08 end of the Bluetooth chip. The RI_MCU end of the level conversion chip is connected to the P0.07 end of the Bluetooth chip. The DTR_MCU end of the level conversion chip is connected to the P0.05 end of the Bluetooth chip. The RXD_MCU end of the level conversion chip is connected to the P0.27 end of the Bluetooth chip. The TXD_MCU end of the level conversion chip is connected to the P0.12 end of the Bluetooth chip;

[0014] The LTE antenna circuit includes an LTE antenna, a thirty-fourth resistor, a thirty-first capacitor, and a thirty-second capacitor. The first end of the thirty-fourth resistor is respectively connected to the first end of the thirty-first capacitor and the ANT_MAIN end of the LTE chip. The second end of the thirty-fourth resistor is respectively connected to the first end of the thirty-second capacitor and the LTE antenna. The second ends of the thirty-first capacitor and the thirty-second capacitor are both grounded;

[0015] The GNSS antenna circuit includes a low-noise amplifier, a GNSS antenna, a thirty-third capacitor, a thirty-fourth capacitor, a sixty-seventh capacitor, a thirty-fifth resistor, and a fourth inductor. The GNSS antenna is respectively connected to the first end of the thirty-third capacitor and the first end of the thirty-fifth resistor. The second end of the thirty-fifth resistor is respectively connected to the first end of the thirty-fourth capacitor and the first end of the fourth inductor. The second end of the fourth inductor is connected to the RF IN terminal of the low-noise amplifier after being connected in series with the sixty-seventh capacitor. The SHDN terminal of the low-noise amplifier is connected to the EN_SHDN terminal of the LTE chip. The RF OUT terminal of the low-noise amplifier is connected to the ANT_GNSS terminal of the LTE chip. The second ends of the thirty-third capacitor and the thirty-fourth capacitor are both grounded;

[0016] The SIM card circuit includes a SIM card chip, a TVS diode, a seventh resistor, an eighth resistor, a ninth resistor, an eleventh resistor, a forty-seventh capacitor, and a forty-eighth capacitor. The VCC terminal of the SIM card chip is connected to the USIM_VDD terminal of the LTE chip. The RST terminal of the SIM card chip is respectively connected to the first end of the seventh resistor, the first end of the forty-seventh capacitor, and the I / O_4 terminal of the TVS diode. The second end of the seventh resistor is connected to the USIM_RST terminal of the LTE chip. The CLK terminal of the SIM card chip is respectively connected to the first end of the eighth resistor, the first end of the forty-eighth capacitor, and the I / O_3 terminal of the TVS diode. The second ends of the forty-seventh capacitor and the forty-eighth capacitor are connected and grounded. The I / O terminal of the SIM card chip is respectively connected to the I / O_1 terminal of the TVS diode, the first end of the ninth resistor, and the first end of the eleventh resistor. The second end of the ninth resistor is connected to the USIM_DATA terminal of the LTE chip. The second end of the eleventh resistor is connected to the USIM_VDD terminal of the LTE chip.

[0017] In the above solution, the temperature and humidity sensor circuit includes a temperature and humidity sensor. The SDA terminal of the temperature and humidity sensor is connected to the P1.04 terminal of the Bluetooth chip. The SCL terminal of the temperature and humidity sensor is connected to the P1.06 terminal of the Bluetooth chip;

[0018] The acceleration sensor circuit includes an acceleration sensor. The INT1_ACC terminal of the acceleration sensor is connected to the P1.03 terminal of the Bluetooth chip. The INT2_ACC terminal of the acceleration sensor is connected to the P1.05 terminal of the Bluetooth chip;

[0019] The atmospheric pressure sensor circuit includes an atmospheric pressure sensor. The INT1_PRE terminal of the atmospheric pressure sensor is connected to the P1.07 terminal of the Bluetooth chip;

[0020] The photosensitive sensor circuit includes transistor Q9, transistor Q8, the sixty-first resistor, the sixty-second resistor, and the seventieth capacitor. The drain of the transistor is respectively connected to the 3V output terminal and the first end of the sixty-second resistor. The second end of the sixty-second resistor is respectively connected to the P0.13 terminal of the Bluetooth chip and the source of the transistor. The gate of the transistor is connected to the P0.29 / AIN5 terminal of the Bluetooth chip, the first end of the seventieth capacitor, and the collector of the transistor after being connected in series with the sixty-first resistor. The emitter of the transistor is connected to the second end of the seventieth capacitor and then grounded;

[0021] The magnetron circuit includes a first magnetron and a second magnetron. The TMR_H terminal of the first magnetron is connected to the P0.22 terminal of the Bluetooth chip. The TMR_V terminal of the second magnetron is connected to the P0.10 / NFC2 terminal of the Bluetooth chip.

[0022] In the above solution, the key circuit includes a key switch, and the key switch is connected to the P0.02 / AIN0 terminal of the Bluetooth chip.

[0023] In the above solution, the electronic paper screen circuit includes an electronic paper screen. The DIS_SDA terminal of the electronic paper screen is connected to the P0.25 terminal of the Bluetooth chip. The DIS_SCL terminal of the electronic paper screen is connected to the P0.23 terminal of the Bluetooth chip. The DIS_CS terminal of the electronic paper screen is connected to the P0.21 terminal of the Bluetooth chip. The DIS_D / C terminal of the electronic paper screen is connected to the P0.19 terminal of the Bluetooth chip. The DIS_RES terminal of the electronic paper screen is connected to the P0.18 / RESET terminal of the Bluetooth chip. The DIS_BUSY terminal of the electronic paper screen is connected to the P0.16 terminal of the Bluetooth chip.

[0024] In the above solution, the RGB indicator circuit includes an RGB lamp, the twelfth resistor, the fourteenth resistor, and the fifteenth resistor. The third terminal of the RGB lamp is connected to the 3V output terminal. The first terminal of the RGB lamp is connected to the P0.15 terminal of the Bluetooth chip after being connected in series with the twelfth resistor. The second terminal of the RGB lamp is connected to the P0.17 terminal of the Bluetooth chip after being connected in series with the fourteenth resistor. The fourth terminal of the RGB lamp is connected to the P0.20 terminal of the Bluetooth chip after being connected in series with the fifteenth resistor.

[0025] In the above solution, the buzzer circuit includes a buzzer driver chip and a buzzer. The first terminal of the buzzer is connected to the VO1 terminal of the buzzer driver chip. The second terminal of the buzzer is connected to the VO2 terminal of the buzzer driver chip. The DIN_BZ terminal of the buzzer driver chip is connected to the P0.31 / AIN7 terminal of the Bluetooth chip. The EN_BZ terminal of the buzzer driver chip is connected to the P1.12 terminal of the Bluetooth chip.

[0026] Advantages of the present invention compared with the prior art:

[0027] The present invention can automatically connect to existing nearby 4G base stations and connect to the cloud management platform. The goods owner can directly conduct remote management and control of the goods. It supports multiple positioning systems to achieve optimal global positioning and movement trajectory recording. During the transportation and loading / unloading of logistics, it collects and records the altitude, air pressure, temperature and humidity where the goods are located, detects the magnitude of the force received by the goods during collisions and drops, and can give multiple alarms in a timely manner when exceeding the set data threshold, ensuring that the entire transportation process is more accurate, comprehensive, safe and automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to disclose a further understanding of the present invention, and constitute a part of the present invention. The schematic 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:

[0029] Figure 1 is a schematic structural diagram of an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0030] Figure 2 is a schematic circuit diagram of a Bluetooth chip in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0031] Figure 3 is a schematic circuit diagram of a charging management circuit in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0032] Figure 4 is a schematic circuit diagram of a USB input current limiting circuit in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0033] Figure 5 is a schematic circuit diagram of a DCDC circuit in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0034] Figure 6 is a schematic circuit diagram of a storage circuit in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0035] Figure 7 is a schematic circuit diagram of a LET module circuit in an intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0036] Figure 8Schematic diagram of the circuit structure of the level conversion chip in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the circuit structure of the LTE antenna circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the circuit structure of the GNSS antenna circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0039] Figure 11 Schematic diagram of the circuit structure of the SIM card circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0040] Figure 12 Schematic diagram of the circuit structure of the temperature and humidity sensor circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0041] Figure 13 Schematic diagram of the circuit structure of the acceleration sensor circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0042] Figure 14 Schematic diagram of the circuit structure of the atmospheric pressure sensor circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0043] Figure 15 Schematic diagram of the circuit structure of the photosensitive sensor circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0044] Figure 16 Schematic diagram of the circuit structure of the magnetron circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0045] Figure 17 Schematic diagram of the circuit structure of the key circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0046] Figure 18 Schematic diagram of the circuit structure of the electronic paper screen circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to an embodiment of the present invention;

[0047] Figure 19Schematic diagram of the circuit structure of the RGB indicator circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to the embodiments of the present invention;

[0048] Figure 20 Schematic diagram of the circuit structure of the buzzer circuit in the intelligent waybill circuit applicable to the transportation of valuable and fragile items according to the embodiments of the present invention. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present invention clearer and more 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.

[0050] 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 terms such as "first", "second", "third", etc. are only for the convenience of distinguishing and describing the same components, rather than indicating or implying the number of the components referred to, and should not be construed 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.

[0051] It should be noted that in this article, the term "comprising", "including" or any other variation 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 further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, article or device including that element.

[0052] Embodiment 1 of the present invention provides an intelligent waybill circuit applicable to the transportation of valuable and fragile items, as Figure 1 shown, including a Bluetooth chip U1, a power supply circuit, an LTE module circuit, a storage circuit, a temperature and humidity sensor circuit, an acceleration sensor circuit, an atmospheric pressure sensor circuit, a magnetron circuit, a key circuit, an electronic paper screen circuit, an RGB indicator circuit, and a buzzer circuit. The power supply circuit is used to convert a 5V voltage into a 3V voltage for power supply. The Bluetooth chip U1 is respectively communicatively connected to the LTE module circuit, the storage circuit, the temperature and humidity sensor circuit, the acceleration sensor circuit, the atmospheric pressure sensor circuit, the magnetron circuit, the key circuit, the electronic paper screen circuit, the RGB indicator circuit, and the buzzer circuit.

[0053] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 andFigure 5 As shown, the power supply circuit includes a lithium battery VBAT, a charging management circuit, a USB input current limiting circuit, and a DCDC circuit. The lithium battery VBAT is connected to the output terminal of the charging management circuit for charging the lithium battery VBAT. The USB input current limiting circuit is connected in parallel with the charging management circuit to limit the current and prevent overcharging. The DCDC circuit is connected to the output terminal of the charging management circuit to convert the 5V voltage into a 3V voltage.

[0054] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the charging management circuit includes a charging management chip U2, a USB interface USB_5V, a thirty-ninth resistor R39, a forty-seventh resistor R47, a forty-eighth resistor R48, a forty-ninth resistor R49, a fifty-third resistor R53, a fifty-fourth resistor R54, a second capacitor C2, a fourteenth capacitor C14, a first light-emitting diode LED1, a second light-emitting diode LED2, a sixth inductor L6, and a 5V output terminal VIN_5V. The USB interface USB_5V is connected to the first end of the fifty-third resistor R53. The second end of the fifty-third resistor R53 is respectively connected to the P1.02 terminal of the Bluetooth chip U1 and the first end of the fifty-fourth resistor R54. The second end of the fifty-fourth resistor R54 is grounded. The positive electrode of the lithium battery VBAT is respectively connected to the first end of the fourteenth capacitor C14, the first end of the second capacitor C2, the first end of the sixth inductor L6, and the VBAT terminal of the charging management chip U2. The negative electrode of the lithium battery VBAT is respectively connected to the second end of the fourteenth capacitor C14 and the second end of the second capacitor C2. The second end of the sixth inductor L6 is connected to the SW terminal of the charging management chip U2. The IND terminal of the charging management chip U2 is respectively connected to the first end of the forty-seventh resistor R47, the first end of the forty-eighth resistor R48, and the negative electrode of the second light-emitting diode LED2. The second end of the forty-eighth resistor R48 is respectively connected to the P0.24 terminal of the Bluetooth chip U1 and the first end of the forty-ninth resistor R49. The second end of the forty-ninth resistor R49 is connected to the negative electrode of the first light-emitting diode LED1 and then grounded. The positive electrode of the first light-emitting diode LED1 is connected to the second end of the forty-seventh resistor R47. The VIN terminal of the charging management chip U2 is respectively connected to the first end of the thirty-ninth resistor R39 and the 5V output terminal VIN_5V. The second end of the thirty-ninth resistor R39 is connected to the positive electrode of the second light-emitting diode LED2.

[0055] As Figure 1 , Figure 2 , Figure 3 ,Figure 4 and Figure 5 As shown in Figure 5 , the USB input current limiting circuit includes a charging current limiting chip U3. The IN terminal of the charging current limiting chip U3 is connected to the USB interface USB_5V, and the OUT terminal of the charging current limiting chip U3 is connected to the 5V output terminal VIN_5V.

[0056] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the DCDC circuit includes a DCDC conversion chip U4, a 3V output terminal VDD_3V3, a sixth diode D6, a sixty-ninth capacitor C69, a thirty-sixth capacitor C36, a thirty-seventh capacitor C37, a seventy-first capacitor C71, and a seventy-second capacitor C72. The positive electrode of the sixth diode D6 is connected to the positive electrode of the lithium battery VBAT. The negative electrode of the sixth diode D6 is respectively connected to the first terminal of the sixty-ninth capacitor C69, the first terminal of the thirty-sixth capacitor C36, and the VIN terminal of the DCDC conversion chip U4. The second terminal of the sixty-ninth capacitor C69 is connected to the second terminal of the thirty-sixth capacitor C36 and then grounded. The VOUT terminal of the DCDC conversion chip U4 is respectively connected to the first terminal of the thirty-seventh capacitor C37, the first terminal of the seventy-first capacitor C71, the first terminal of the seventy-second capacitor C72, and the 3V output terminal VDD_3V3. The second terminal of the thirty-seventh capacitor C37 is respectively connected to the second terminal of the seventy-first capacitor C71, the second terminal of the seventy-second capacitor C72, and the VSS terminal of the DCDC conversion chip U4 and then grounded.

[0057] As Figure 1 and Figure 2 As shown in Figure 1 and Figure 2 , a 2.4G Bluetooth antenna circuit is connected to the Bluetooth chip U1. The 2.4G Bluetooth antenna circuit includes a sixteenth inductor ML6, a thirteenth inductor ML3, a tenth capacitor MC10, a fifteenth capacitor MC15, and an antenna ANT1. The first terminal of the sixteenth inductor ML6 is respectively connected to the first terminal of the tenth capacitor MC10 and the ANT terminal of the Bluetooth chip U1. The second terminal of the sixteenth inductor ML6 is respectively connected to the first terminal of the thirteenth inductor ML3 and the first terminal of the fifteenth capacitor MC15. The second terminal of the thirteenth inductor ML3 is connected to the antenna ANT1. The second terminal of the fifteenth capacitor MC15 is grounded. The second terminal of the tenth capacitor MC10 is connected to the VSS_PA terminal of the Bluetooth chip U1.

[0058] As Figure 1 、 Figure 2 、 Figure 6As shown, the storage circuit includes a storage chip U5. The FLASH_DI terminal of the storage chip U5 is connected to the P0.04 / AIN2 terminal of the Bluetooth chip U1. The FLASH_DO terminal of the storage chip U5 is connected to the P0.06 terminal of the Bluetooth chip U1. The FLASH_CLK terminal of the storage chip U5 is connected to the P0.26 terminal of the Bluetooth chip U1. The FLASH_CS terminal of the storage chip U5 is connected to the P0.08 terminal of the Bluetooth chip U1.

[0059] As Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, the LTE module circuit includes an LTE chip U6, a level conversion chip U15, an LTE antenna circuit, a GNSS antenna circuit, and a SIM card circuit. The MAIN_RTS terminal of the LTE chip U6 is connected to the A1 terminal of the level conversion chip U15. The RTS_MCU terminal of the level conversion chip U15 is connected to the P0.14 terminal of the Bluetooth chip U1. The CTS_MCU terminal of the level conversion chip U15 is connected to the P0.11 terminal of the Bluetooth chip U1. The DCD_MCU terminal of the level conversion chip U15 is connected to the P1.08 terminal of the Bluetooth chip U1. The RI_MCU terminal of the level conversion chip U15 is connected to the P0.07 terminal of the Bluetooth chip U1. The DTR_MCU terminal of the level conversion chip U15 is connected to the P0.05 / AIN3 terminal of the Bluetooth chip U1. The RXD_MCU terminal of the level conversion chip U15 is connected to the P0.27 terminal of the Bluetooth chip U1. The TXD_MCU terminal of the level conversion chip U15 is connected to the P0.12 terminal of the Bluetooth chip U1.

[0060] As Figure 1 , Figure 2 , Figure 7 , Figure 9 As shown, the LTE antenna circuit includes an LTE antenna AJ1, a thirty-fourth resistor R34, a thirty-first capacitor C31, and a thirty-second capacitor C32. The first end of the thirty-fourth resistor R34 is connected to the first end of the thirty-first capacitor C31 and the ANT_MAIN terminal of the LTE chip U6 respectively. The second end of the thirty-fourth resistor R34 is connected to the first end of the thirty-second capacitor C32 and the LTE antenna AJ1 respectively. The second ends of the thirty-first capacitor C31 and the thirty-second capacitor C32 are both grounded.

[0061] As Figure 1 , Figure 2 , Figure 7 , Figure 10As shown, the GNSS antenna circuit includes a low-noise amplifier U7, a GNSS antenna AJ2, a thirty-third capacitor C33, a thirty-fourth capacitor C34, a sixty-seventh capacitor C67, a thirty-fifth resistor R35, and a fourth inductor L4. The GNSS antenna AJ2 is respectively connected to the first end of the thirty-third capacitor C33 and the first end of the thirty-fifth resistor R35. The second end of the thirty-fifth resistor R35 is respectively connected to the first end of the thirty-fourth capacitor C34 and the first end of the fourth inductor L4. The second end of the fourth inductor L4 is connected to the RFIN terminal of the low-noise amplifier U7 after being connected in series with the sixty-seventh capacitor C67. The SHDN terminal of the low-noise amplifier U7 is connected to the EN_SHDN terminal of the LTE chip U6. The RFOUT terminal of the low-noise amplifier U7 is connected to the ANT_GNSS terminal of the LTE chip U6. The second ends of the thirty-third capacitor C33 and the thirty-fourth capacitor C34 are both grounded.

[0062] As Figure 1 , Figure 2 , Figure 7 , Figure 11 As shown, the SIM card circuit includes a SIM card chip U8, a TVS diode U9, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, an eleventh resistor R11, a forty-seventh capacitor C47, and a forty-eighth capacitor C48. The VCC terminal of the SIM card chip U8 is connected to the USIM_VDD terminal of the LTE chip U6. The RST terminal of the SIM card chip U8 is respectively connected to the first end of the seventh resistor R7, the first end of the forty-seventh capacitor C47, and the I / O_4 terminal of the TVS diode U9. The second end of the seventh resistor R7 is connected to the USIM_RST terminal of the LTE chip U6. The CLK terminal of the SIM card chip U8 is respectively connected to the first end of the eighth resistor R8, the first end of the forty-eighth capacitor C48, and the I / O_3 terminal of the TVS diode U9. The second ends of the forty-seventh capacitor C47 and the forty-eighth capacitor C48 are connected and then grounded. The I / O terminal of the SIM card chip U8 is respectively connected to the I / O_1 terminal of the TVS diode U9, the first end of the ninth resistor R9, and the first end of the eleventh resistor R11. The second end of the ninth resistor R9 is connected to the USIM_DATA terminal of the LTE chip U6. The second end of the eleventh resistor R11 is connected to the USIM_VDD terminal of the LTE chip U6.

[0063] As Figure 1 , Figure 2 and Figure 12As shown, the temperature and humidity sensor circuit includes a temperature and humidity sensor U10. The SDA terminal of the temperature and humidity sensor U10 is connected to the P1.04 terminal of the Bluetooth chip U1, and the SCL terminal of the temperature and humidity sensor U10 is connected to the P1.06 terminal of the Bluetooth chip U1.

[0064] As Figure 1 、 Figure 2 and Figure 13 shown, the acceleration sensor circuit includes an acceleration sensor U11. The INT1_ACC terminal of the acceleration sensor U11 is connected to the P1.03 terminal of the Bluetooth chip U1, and the INT2_ACC terminal of the acceleration sensor U11 is connected to the P1.05 terminal of the Bluetooth chip U1.

[0065] As Figure 1 、 Figure 2 and Figure 14 shown, the atmospheric pressure sensor circuit includes an atmospheric pressure sensor U12. The INT1_PRE terminal of the atmospheric pressure sensor U12 is connected to the P1.07 terminal of the Bluetooth chip U1.

[0066] As Figure 1 、 Figure 2 and Figure 15 shown, the photosensitive sensor circuit includes a triode Q9, a transistor Q8, a sixty-first resistor R61, a sixty-second resistor R62, and a seventieth capacitor C70. The drain of the triode Q9 is respectively connected to the 3V output terminal VDD_3V3 and the first terminal of the sixty-second resistor R62. The second terminal of the sixty-second resistor R62 is respectively connected to the P0.13 terminal of the Bluetooth chip U1 and the source of the triode Q9. The gate of the triode Q9 is connected in series with the sixty-first resistor R61 and then respectively connected to the P0.29 / AIN5 terminal of the Bluetooth chip U1, the first terminal of the seventieth capacitor C70, and the collector of the transistor Q8. The emitter of the transistor Q8 is connected to the second terminal of the seventieth capacitor C70 and then grounded.

[0067] As Figure 1 、 Figure 2 and Figure 16 shown, the magnetron circuit includes a first magnetron U13 and a second magnetron U14. The TMR_H terminal of the first magnetron U13 is connected to the P0.22 terminal of the Bluetooth chip U1, and the TMR_V terminal of the second magnetron U14 is connected to the P0.10 / NFC2 terminal of the Bluetooth chip U1.

[0068] As Figure 1 、 Figure 2 and Figure 17 shown, the key circuit includes a key switch J3. The key switch J3 is connected to the P0.02 / AIN0 terminal of the Bluetooth chip U1.

[0069] As Figure 1 , Figure 2 and Figure 18 shown, the electronic paper screen circuit includes an electronic paper screen J1. The DIS_SDA terminal of the electronic paper screen J1 is connected to the P0.25 terminal of the Bluetooth chip U1. The DIS_SCL terminal of the electronic paper screen J1 is connected to the P0.23 terminal of the Bluetooth chip U1. The DIS_CS terminal of the electronic paper screen J1 is connected to the P0.21 terminal of the Bluetooth chip U1. The DIS_D / C terminal of the electronic paper screen J1 is connected to the P0.19 terminal of the Bluetooth chip U1. The DIS_RES terminal of the electronic paper screen J1 is connected to the P0.18 terminal of the Bluetooth chip U1. The DIS_BUSY terminal of the electronic paper screen J1 is connected to the P0.16 terminal of the Bluetooth chip U1.

[0070] As Figure 1 , Figure 2 and Figure 19 shown, the RGB indicator light circuit includes an RGB lamp LED3, a twelfth resistor R12, a fourteenth resistor R14, and a fifteenth resistor R15. The third terminal of the RGB lamp LED3 is connected to the 3V output terminal VDD_3V3. The first terminal of the RGB lamp LED3 is connected to the P0.15 terminal of the Bluetooth chip U1 in series with the twelfth resistor R12. The second terminal of the RGB lamp LED3 is connected to the P0.17 terminal of the Bluetooth chip U1 in series with the fourteenth resistor R14. The fourth terminal of the RGB lamp LED3 is connected to the P0.20 terminal of the Bluetooth chip U1 in series with the fifteenth resistor R15.

[0071] As Figure 1 , Figure 2 and Figure 20 shown, the buzzer circuit includes a buzzer driver chip U16 and a buzzer BZ1. The first terminal of the buzzer BZ1 is connected to the VO1 terminal of the buzzer driver chip U16. The second terminal of the buzzer BZ1 is connected to the VO2 terminal of the buzzer driver chip U16. The DIN_BZ terminal of the buzzer driver chip U16 is connected to the P0.31 / AIN7 terminal of the Bluetooth chip U1. The EN_BZ terminal of the buzzer driver chip U16 is connected to the P1.12 terminal of the Bluetooth chip U1.

[0072] The working principle of the present invention is as follows:

[0073] As Figures 1 - 20As shown, an intelligent shipping label circuit suitable for transporting valuable and fragile items uses a 2.4G low-power Bluetooth chip as the main controller. Temperature and humidity sensors, acceleration sensors, atmospheric pressure sensors, magnetrons, and photosensitive sensors are used to detect environmental information. The memory is used for data storage, and a low-power e-paper screen is used for display. Through the GNSS positioning function of the LTE module, the positioning and movement trajectory recording of the shipping label are realized. Through the LTE antenna communication function of the LTE module, information is reported to the cloud platform and the cloud platform is controlled. When the data information exceeds the set range, the main controller can alarm through the buzzer sounding, or can also alarm by sending text messages or making phone calls to the management personnel through the cloud platform. The information storage and transmission use encryption protocols to ensure data security. In places where the LTE antenna signal is poor, the shipping label can also be connected and communicated with an external mobile phone app through the low-power Bluetooth method to realize intelligent management and control of the shipping label.

[0074] Global positioning is achieved through the GNSS function, supporting GPS, GLONASS, BDS, Galileo, SBAS, and QZSS positioning systems. Global positioning can be realized, and the optimal selection can be made according to the signal strength of each satellite system. The data collected by GNSS positioning can be transmitted to the cloud platform for statistics and data analysis. The data sampling and reporting interval, wake-up interval, and alarm threshold can be personalized set according to the usage scenario on the cloud platform to improve the power usage efficiency of the product. The alarm function can select indicator light alarm, buzzer alarm, text message alarm, and phone call alarm.

[0075] The acceleration sensor communicates with the 2.4G low-power Bluetooth chip main controller through the I2C communication method. It is used to detect whether the item monitored by the product has been collided or dropped, and the magnitude of the force received during the collision and drop process. The data sampling and reporting interval, wake-up interval, and alarm threshold can be personalized set according to the usage scenario on the cloud platform to improve the power usage efficiency of the product. The alarm function can select indicator light alarm, buzzer alarm, text message alarm, and phone call alarm.

[0076] The photosensitive sensor is installed on the back of the shipping label. When the shipping label is installed on the container, the photosensitive sensor is covered. When the shipping label is removed, the sensor senses the light, and the photosensitive sensor circuit is converted into an electrical signal and then transmitted to the Bluetooth chip. The Bluetooth chip sends an alarm message to the platform through the LTE antenna. Multiple anti-removal alarm methods can be set in advance on the cloud platform, and indicator light alarm, buzzer alarm, text message alarm, and phone call alarm can be selected. The anti-removal detection function can be turned on or off through the platform.

[0077] The magnetron can detect the logistics box cover with a small magnet inside. The closed state and open state of the logistics box cover can be sensed by the magnetron, and then the magnetic field information is converted into an electrical signal and sent to the Bluetooth chip, so as to judge whether the box cover is opened.

[0078] Violent lid opening monitoring: When the acceleration sensor detects that the magnitude of the collision force exceeds a certain threshold and the magnetron detects that the lid is opened, it is determined that the lid is violently opened.

[0079] A memory, communicating with the main control of the 2.4G low-power Bluetooth chip through SPI communication, is used to store the data information of the temperature and humidity sensor, acceleration sensor, photosensitive sensor, atmospheric pressure sensor, magnetron, and GNSS positioning.

[0080] An electronic paper screen, with low-power characteristics, can achieve power-off display, communicates with the main control of the 2.4G low-power Bluetooth chip through SPI communication, and can perform partial screen refreshing to update information when there is information update. It is used for displaying product information, network signal strength, temperature and humidity, atmospheric pressure, electronic lock status, logistics box lid status, battery power, alarm information, etc.

[0081] The buzzer is controlled by the main control of the 2.4G low-power Bluetooth chip and is used for the power-on and power-off prompt sounds, alarm sounds, etc. of the product. While achieving the same sound volume as the coil buzzer, its power consumption and volume are much smaller than those of the coil buzzer.

[0082] The above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention.

Claims

1. An intelligent waybill circuit applicable to the transportation of precious and fragile items, characterized in that It includes a Bluetooth chip, a power circuit, an LTE module circuit, a storage circuit, a temperature and humidity sensor circuit, an acceleration sensor circuit, an atmospheric pressure sensor circuit, a magnetron circuit, a key circuit, an electronic paper screen circuit, an RGB indicator light circuit, and a buzzer circuit. The power circuit is used to convert the 5V voltage into 3V voltage for power supply. The Bluetooth chip is communicatively connected to the LTE module circuit, the storage circuit, the temperature and humidity sensor circuit, the acceleration sensor circuit, the atmospheric pressure sensor circuit, the magnetron circuit, the key circuit, the electronic paper screen circuit, the RGB indicator light circuit, and the buzzer circuit respectively.

2. The intelligent waybill circuit applicable to the transportation of precious and fragile items according to claim 1, characterized in that, The power circuit includes a lithium battery, a charging management circuit, a USB input current limiting circuit, and a DCDC circuit. The lithium battery is connected to the output end of the charging management circuit for charging the lithium battery. The USB input current limiting circuit is connected in parallel with the charging management circuit to limit the current and prevent overcharging. The DCDC circuit is connected to the output end of the charging management circuit to convert the 5V voltage into 3V voltage. The charging management circuit includes a charging management chip, a USB interface, a thirty-ninth resistor, a forty-seventh resistor, a forty-eighth resistor, a forty-ninth resistor, a fifty-third resistor, a fifty-fourth resistor, a second capacitor, a fourteenth capacitor, a first light-emitting diode, a second light-emitting diode, a sixth inductor, and a 5V output terminal. The USB interface is connected to the first end of the fifty-third resistor. The second end of the fifty-third resistor is respectively connected to the P1.02 terminal of the Bluetooth chip and the first end of the fifty-fourth resistor. The second end of the fifty-fourth resistor is grounded. The positive electrode of the lithium battery is respectively connected to the first end of the fourteenth capacitor, the first end of the second capacitor, the first end of the sixth inductor, and the VBAT terminal of the charging management chip. The negative electrode of the lithium battery is respectively connected to the second end of the fourteenth capacitor and the second end of the second capacitor. The second end of the sixth inductor is connected to the SW terminal of the charging management chip. The IND terminal of the charging management chip is respectively connected to the first end of the forty-seventh resistor, the first end of the forty-eighth resistor, and the negative electrode of the second light-emitting diode. The second end of the forty-eighth resistor is respectively connected to the P0.24 terminal of the Bluetooth chip and the first end of the forty-ninth resistor. The second end of the forty-ninth resistor is connected to the negative electrode of the first light-emitting diode and then grounded. The positive electrode of the first light-emitting diode is connected to the second end of the forty-seventh resistor. The VIN terminal of the charging management chip is respectively connected to the first end of the thirty-ninth resistor and the 5V output terminal. The second end of the thirty-ninth resistor is connected to the positive electrode of the second light-emitting diode. The USB input current limiting circuit includes a charging current limiting chip. The IN terminal of the charging current limiting chip is connected to the USB interface. The OUT terminal of the charging current limiting chip is connected to the 5V output terminal. The DCDC circuit includes a DCDC conversion chip, a 3V output terminal, a sixth diode, a sixty-ninth capacitor, a thirty-sixth capacitor, a thirty-seventh capacitor, a seventy-first capacitor, and a seventy-second capacitor. The positive electrode of the sixth diode is connected to the positive electrode of the lithium battery. The negative electrode of the sixth diode is respectively connected to the first terminal of the sixty-ninth capacitor, the first terminal of the thirty-sixth capacitor, and the VIN terminal of the DCDC conversion chip. The second terminal of the sixty-ninth capacitor is connected to the second terminal of the thirty-sixth capacitor and then grounded. The VOUT terminal of the DCDC conversion chip is respectively connected to the first terminal of the thirty-seventh capacitor, the first terminal of the seventy-first capacitor, the first terminal of the seventy-second capacitor, and the 3V output terminal. The second terminal of the thirty-seventh capacitor is respectively connected to the second terminal of the seventy-first capacitor, the second terminal of the seventy-second capacitor, and the VSS terminal of the DCDC conversion chip and then grounded.

3. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 2, wherein A 2.4G Bluetooth antenna circuit is connected to the Bluetooth chip. The 2.4G Bluetooth antenna circuit includes a sixteenth inductor, a thirteenth inductor, a tenth capacitor, a fifteenth capacitor, and an antenna. The first terminal of the sixteenth inductor is respectively connected to the first terminal of the tenth capacitor and the ANT terminal of the Bluetooth chip. The second terminal of the sixteenth inductor is respectively connected to the first terminal of the thirteenth inductor and the first terminal of the fifteenth capacitor. The second terminal of the thirteenth inductor is connected to the antenna. The second terminal of the fifteenth capacitor is grounded. The second terminal of the tenth capacitor is connected to the VSS_PA terminal of the Bluetooth chip.

4. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 3, wherein The storage circuit includes a storage chip. The FLASH_DI terminal of the storage chip is connected to the P0.04 / AIN2 terminal of the Bluetooth chip. The FLASH_DO terminal of the storage chip is connected to the P0.06 terminal of the Bluetooth chip. The FLASH_CLK terminal of the storage chip is connected to the P0.26 terminal of the Bluetooth chip. The FLASH_CS terminal of the storage chip is connected to the P0.08 terminal of the Bluetooth chip.

5. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 4, characterized in that, The shown LTE module circuit includes an LTE chip, a level conversion chip, an LTE antenna circuit, a GNSS antenna circuit, and a SIM card circuit. The MAIN_RTS terminal of the LTE chip is connected to the A1 terminal of the level conversion chip. The RTS_MCU terminal of the level conversion chip is connected to the P0.14 terminal of the Bluetooth chip. The CTS_MCU terminal of the level conversion chip is connected to the P0.11 terminal of the Bluetooth chip. The DCD_MCU terminal of the level conversion chip is connected to the P1.08 terminal of the Bluetooth chip. The RI_MCU terminal of the level conversion chip is connected to the P0.07 terminal of the Bluetooth chip. The DTR_MCU terminal of the level conversion chip is connected to the P0.05 terminal of the Bluetooth chip. The RXD_MCU terminal of the level conversion chip is connected to the P0.27 terminal of the Bluetooth chip. The TXD_MCU terminal of the level conversion chip is connected to the P0.12 terminal of the Bluetooth chip. The LTE antenna circuit includes an LTE antenna, a thirty-fourth resistor, a thirty-first capacitor, and a thirty-second capacitor. The first end of the thirty-fourth resistor is connected to the first end of the thirty-first capacitor and the ANT_MAIN terminal of the LTE chip respectively. The second end of the thirty-fourth resistor is connected to the first end of the thirty-second capacitor and the LTE antenna respectively. The second ends of the thirty-first capacitor and the thirty-second capacitor are both grounded; The GNSS antenna circuit includes a low-noise amplifier, a GNSS antenna, a thirty-third capacitor, a thirty-fourth capacitor, a sixty-seventh capacitor, a thirty-fifth resistor, and a fourth inductor. The GNSS antenna is connected to the first end of the thirty-third capacitor and the first end of the thirty-fifth resistor respectively. The second end of the thirty-fifth resistor is connected to the first end of the thirty-fourth capacitor and the first end of the fourth inductor respectively. The second end of the fourth inductor is connected to the RFIN terminal of the low-noise amplifier after being connected in series with the sixty-seventh capacitor. The SHDN terminal of the low-noise amplifier is connected to the EN_SHDN terminal of the LTE chip. The RFOUT terminal of the low-noise amplifier is connected to the ANT_GNSS terminal of the LTE chip. The second ends of the thirty-third capacitor and the thirty-fourth capacitor are both grounded; The SIM card circuit includes a SIM card chip, a TVS diode, a seventh resistor, an eighth resistor, a ninth resistor, an eleventh resistor, a forty-seventh capacitor, and a forty-eighth capacitor. The VCC terminal of the SIM card chip is connected to the USIM_VDD terminal of the LTE chip. The RST terminal of the SIM card chip is connected to the first end of the seventh resistor, the first end of the forty-seventh capacitor, and the I / O_4 terminal of the TVS diode respectively. The second end of the seventh resistor is connected to the USIM_RST terminal of the LTE chip. The CLK terminal of the SIM card chip is connected to the first end of the eighth resistor, the first end of the forty-eighth capacitor, and the I / O_3 terminal of the TVS diode respectively. The second ends of the forty-seventh capacitor and the forty-eighth capacitor are connected and then grounded. The I / O terminal of the SIM card chip is connected to the I / O_1 terminal of the TVS diode, the first end of the ninth resistor, and the first end of the eleventh resistor respectively. The second end of the ninth resistor is connected to the USIM_DATA terminal of the LTE chip. The second end of the eleventh resistor is connected to the USIM_VDD terminal of the LTE chip.

6. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 5, wherein The temperature and humidity sensor circuit includes a temperature and humidity sensor. The SDA terminal of the temperature and humidity sensor is connected to the P1.04 terminal of the Bluetooth chip. The SCL terminal of the temperature and humidity sensor is connected to the P1.06 terminal of the Bluetooth chip; The acceleration sensor circuit includes an acceleration sensor. The INT1_ACC terminal of the acceleration sensor is connected to the P1.03 terminal of the Bluetooth chip. The INT2_ACC terminal of the acceleration sensor is connected to the P1.05 terminal of the Bluetooth chip; The atmospheric pressure sensor circuit includes an atmospheric pressure sensor, and the INT1_PRE terminal of the atmospheric pressure sensor is connected to the P1.07 terminal of the Bluetooth chip; The photosensitive sensor circuit includes a triode Q9, a transistor Q8, a sixty-first resistor, a sixty-second resistor, and a seventieth capacitor. The drain of the triode is respectively connected to the 3V output terminal and the first terminal of the sixty-second resistor. The second terminal of the sixty-second resistor is respectively connected to the P0.13 terminal of the Bluetooth chip and the source of the triode. The gate of the triode is connected to the P0.29 / AIN5 terminal of the Bluetooth chip, the first terminal of the seventieth capacitor, and the collector of the transistor after being connected in series with the sixty-first resistor. The emitter of the transistor is connected to the second terminal of the seventieth capacitor and then grounded; The magnetron circuit includes a first magnetron and a second magnetron. The TMR_H terminal of the first magnetron is connected to the P0.22 terminal of the Bluetooth chip, and the TMR_V terminal of the second magnetron is connected to the P0.10 / NFC2 terminal of the Bluetooth chip.

7. The intelligent waybill circuit applicable to the transportation of precious and fragile items according to claim 6, wherein The key circuit includes a key switch, and the key switch is connected to the P0.02 / AIN0 terminal of the Bluetooth chip.

8. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 7, wherein The electronic paper screen circuit includes an electronic paper screen. The DIS_SDA terminal of the electronic paper screen is connected to the P0.25 terminal of the Bluetooth chip, the DIS_SCL terminal of the electronic paper screen is connected to the P0.23 terminal of the Bluetooth chip, the DIS_CS terminal of the electronic paper screen is connected to the P0.21 terminal of the Bluetooth chip, the DIS_D / C terminal of the electronic paper screen is connected to the P0.19 terminal of the Bluetooth chip, the DIS_RES terminal of the electronic paper screen is connected to the P0.18 / RESET terminal of the Bluetooth chip, and the DIS_BUSY terminal of the electronic paper screen is connected to the P0.16 terminal of the Bluetooth chip.

9. The intelligent waybill circuit applicable to the transportation of precious and fragile items according to claim 8, wherein, The RGB indicator circuit includes an RGB lamp, a twelfth resistor, a fourteenth resistor, and a fifteenth resistor. The third terminal of the RGB lamp is connected to the 3V output terminal. The first terminal of the RGB lamp is connected to the P0.15 terminal of the Bluetooth chip after being connected in series with the twelfth resistor. The second terminal of the RGB lamp is connected to the P0.17 terminal of the Bluetooth chip after being connected in series with the fourteenth resistor. The fourth terminal of the RGB lamp is connected to the P0.20 terminal of the Bluetooth chip after being connected in series with the fifteenth resistor.

10. The intelligent waybill circuit applicable to the transportation of valuable and fragile items according to claim 9, wherein The buzzer circuit includes a buzzer driver chip and a buzzer. The first terminal of the buzzer is connected to the VO1 terminal of the buzzer driver chip, the second terminal of the buzzer is connected to the VO2 terminal of the buzzer driver chip. The DIN_BZ terminal of the buzzer driver chip is connected to the P0.31 / AIN7 terminal of the Bluetooth chip, and the EN_BZ terminal of the buzzer driver chip is connected to the P1.12 terminal of the Bluetooth chip.

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