On-chain identity identification label device for bicycle traceability

Abstract

The utility model discloses an on-chain identity identification label device for bicycle traceability. The on-chain identity identification tag device comprises a main controller embedded in a bicycle body, a near field communication (NFC) chip, an anti-disassembly detection circuit, a data transmission circuit, a power management module, a sensor combination, a crystal oscillator, an analog-to-digital converter, a display screen and a two-dimensional code display layer, wherein the main controller is respectively connected with the NFC communication chip, the anti-tamper detection circuit, the data transmission circuit, the power management module, the sensor combination, the crystal oscillator, the analog-to-digital converter, the display screen and the two-dimensional code display layer, and the NFC communication chip is respectively connected with the anti-tamper detection circuit, the sensor combination, the crystal oscillator and the data transmission circuit. And the sensor combination is respectively connected with the data transmission circuit and the analog-to-digital converter. According to the utility model, the tamper-proof detection of the bicycle label is realized, and the integrated target of tamper-proof and hardware binding is realized on the physical structure.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and in particular to an on-chain identification tag device for bicycle traceability. Background Technology

[0002] The production, distribution, and after-sales service of bicycles and their accessories have long suffered from problems such as information asymmetry, untraceable origins, and difficulty in tracing responsibility, which seriously affect the efficiency of enterprise product management and consumer trust. Therefore, with the development of the Industrial Internet and digital anti-counterfeiting technologies, product traceability technology is gradually being applied in the bicycle industry. Currently, QR code labels are typically affixed to the bicycle frame for traceability. However, this method lacks reliability in traceability, lacks tamper-proof detection, is easily counterfeited and tampered with, and lacks a physical security carrier, making it difficult to know whether the label has been removed or replaced. It cannot achieve physical anti-tampering and anti-counterfeiting measures for the label, resulting in inaccurate bicycle traceability. Therefore, improving the reliability of label anti-tampering and anti-counterfeiting measures has become a key research focus for various enterprises. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides an on-chain identity recognition tag device for bicycle traceability, which provides a physical security carrier for the tag and achieves the integrated goal of anti-tampering, hardware binding and on-chain evidence storage in terms of physical structure.

[0004] To address the aforementioned technical problems, this utility model provides an on-chain identification tag device for bicycle traceability. The on-chain identification tag device includes: a main controller embedded in the bicycle frame, an NFC communication chip, an anti-tamper detection circuit, a data transmission circuit, a power management module, a sensor assembly, a crystal oscillator, an analog-to-digital converter, a display screen, and a QR code display layer, wherein:

[0005] The main controller is connected to the NFC communication chip, the tamper detection circuit, the data transmission circuit, the power management module, the sensor assembly, the crystal oscillator, the analog-to-digital converter, the display screen, and the QR code display layer, respectively. The NFC communication chip is connected to the tamper detection circuit, the sensor assembly, the crystal oscillator, and the data transmission circuit, respectively. The sensor assembly is connected to the data transmission circuit and the analog-to-digital converter, respectively.

[0006] Optionally, the main controller uses an AT89C52 microcontroller.

[0007] Optionally, the AT89C52 microcontroller has a built-in Flash read-only program memory and random access data memory.

[0008] Optionally, the NFC communication chip is a PN7150 chip, which is connected to the main controller via an integrated circuit bus.

[0009] Optionally, pins 36 and 37 of the PN7150 chip are connected to a crystal oscillator, pins 15 and 36 of the PN7150 chip are function mode pins, and pin 10 of the PN7150 chip is a reset pin.

[0010] Optionally, the tamper detection circuit includes a detection circuit and a detection coil. The detection circuit includes a diode, a detection capacitor, a first resistor, and a second resistor. The detection coil includes a detection feed point and a tamper detection feed point.

[0011] Optionally, the data transmission circuit includes a LoRa module.

[0012] Optionally, the power management module includes an SGM2203-3.3AYK3LG power management chip and an ME3116 asynchronous rectifier buck regulator, with pin 2 of the SGM2203-3.3AYK3LG power management chip connected to pin 5 of the ME3116 asynchronous rectifier buck regulator.

[0013] Optionally, the sensor assembly includes a vibration sensor and an acceleration sensor, which are respectively connected to an analog-to-digital converter.

[0014] Optionally, the display screen is an e-ink screen.

[0015] This invention provides an on-chain identification tag device for bicycle traceability. It achieves a more reliable information verification structure through an NFC communication chip and a QR code display layer. By combining the NFC communication chip and the anti-tamper detection circuit, it provides a physical security carrier for the tag, realizes the anti-tamper detection of the bicycle tag, and can promptly detect the removal and replacement of the tag, thereby improving the anti-counterfeiting security level of the tag. In terms of physical structure, it achieves the integrated goal of anti-tampering, hardware binding and on-chain evidence storage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the on-chain identification tag device for bicycle traceability in an embodiment of this utility model;

[0018] Figure 2 This is a circuit diagram of the PN7150 chip in an embodiment of this utility model;

[0019] Figure 3 This is a circuit diagram of the detection circuit in an embodiment of this utility model;

[0020] Figure 4 This is a circuit diagram of the LoRa module in an embodiment of this utility model;

[0021] Figure 5 This is a circuit diagram of the SGM2203-3.3AYK3LG power management chip connected to the ME3116 asynchronous rectifier step-down regulator in this embodiment of the present invention. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The on-chain identification tag device for bicycle traceability provided in this embodiment of the utility model, such as Figure 1 As shown, Figure 1 The diagram illustrates the structure of an on-chain identification tag device for bicycle traceability according to an embodiment of the present invention. The on-chain identification tag device includes: a main controller embedded in the bicycle frame, an NFC communication chip, an anti-tamper detection circuit, a data transmission circuit, a power management module, a sensor assembly, a crystal oscillator, an analog-to-digital converter, a display screen, and a QR code display layer. The main controller is connected to the NFC communication chip, the anti-tamper detection circuit, the data transmission circuit, the power management module, the sensor assembly, the crystal oscillator, the analog-to-digital converter, the display screen, and the QR code display layer. The NFC communication chip is connected to the anti-tamper detection circuit, the sensor assembly, the crystal oscillator, and the data transmission circuit. The sensor assembly is connected to the data transmission circuit and the analog-to-digital converter.

[0024] In this specific implementation, the on-chain identification tag device is embedded in the bicycle frame. The main controller in the on-chain identification tag device is used to control the various components of the identification tag device as a whole. The Near Field Communication (NFC) communication chip is used to store the vehicle's unique identification identifier and on-chain address mapping information, supports the ISO 14443 standard communication protocol, and realizes near-field information interaction with the terminal or card reader. The anti-tamper detection circuit is used to detect whether the device has been illegally removed. Once the tag is illegally removed or damaged, it will cause the NFC communication chip to fail or upload an abnormal event mark to the chain through sensing. The data transmission circuit is used to transmit data to the chain. The power management module is used to distribute power to the various components of the device. The sensor combination is used to detect the status information of the tag device. The crystal oscillator is used to provide a stable clock signal. The analog-to-digital converter is used to convert the signal. The analog-to-digital converter can be a PCF8591 analog-to-digital converter. The display screen is used to display the vehicle status information. The QR code display layer is used to display static information such as the vehicle identification code, verification graphic, and brand anti-counterfeiting mark. The QR code display layer can be displayed using a small display screen.

[0025] In the specific implementation of this utility model, the main controller adopts an AT89C52 microcontroller. The AT89C52 microcontroller has built-in Flash read-only program memory and random access data memory.

[0026] Specifically, the AT89C52 microcontroller is a low-voltage, high-performance 8-bit microcontroller with a working frequency of up to 40MHz. It can achieve efficient data processing and real-time control. Compared with general microcontrollers, it has higher computing power and faster response speed. The AT89C52 microcontroller has built-in Flash read-only program memory and random access data memory, which can meet the needs of larger-scale data processing.

[0027] In the specific implementation of this utility model, the NFC communication chip adopts the PN7150 chip, and the PN7150 chip is connected to the main controller based on the integrated circuit bus.

[0028] Pins 36 and 37 of the PN7150 chip are connected to a crystal oscillator, pins 15 and 36 of the PN7150 chip are function mode pins, and pin 10 of the PN7150 chip is a reset pin.

[0029] Specifically, the PN7150 chip is a full-featured NFC controller with built-in firmware and a network circuit interface. It supports various transmission modes, provides higher output power through a transmitter output stage supplying 3.0V to 4.75V, supports offline NFC reading, can store on-chain identity identifiers, and supports terminal near-field communication reading, such as... Figure 2 As shown, pins 36 and 37 of the PN7150 chip are connected to a crystal oscillator, which can be a 27.12MHz quartz oscillator to ensure clock frequency stability. Pins 15 and 36 of the PN7150 chip are function mode pins. Pins 15 and 16 can be linked to different function modes through positive and negative receiver inputs. Function modes include listener mode and poller mode. In listener mode, the chip can act as an NFC target. In poller mode, the chip acts as a reader / writer to search for NFC targets and communicate with them. Pin 10 of the PN7150 chip is a reset pin, and the chip settings will not be interrupted by power-off or hardware reset.

[0030] In a specific implementation of this utility model, the anti-tamper detection circuit includes a detection circuit and a detection coil. The detection circuit includes a diode, a detection capacitor, a first resistor, and a second resistor. The detection coil includes a detection feed point and an anti-tamper feed point.

[0031] Specifically, such as Figure 3 As shown, the detection circuit includes a diode D1, a detection capacitor C1, a first resistor R1, and a second resistor R2. The anode of diode D1 is connected to one end of the second resistor R2, and the cathode of diode D1 is connected to one end of the detection capacitor C1. One end of the second resistor R2 is connected to one end of the first resistor R1. One end of the first resistor R1 is connected to the power supply VAA. The second end of the second resistor R2 and one end of the detection capacitor C1 are connected to the power supply ground. The detection circuit analyzes whether the device's protection point has been removed by detecting voltage changes. Due to the capacitance effect of the detection capacitor, the capacitance changes once the distance to the device tag changes, thus detecting the removal of the tag device. The detection feed point and the tamper-proof feed point in the detection coil are in contact. When the tag device is removed, the detection feed point and the tamper-proof feed point will separate. Through the detection circuit and the detection coil, it is possible to accurately analyze whether the tag device has been removed. Once the tag is illegally torn off or damaged, it will cause the NFC communication chip to malfunction or upload an abnormal event tag to the chain via sensing.

[0032] In a specific implementation of this utility model, the data transmission circuit includes a LoRa module.

[0033] Specifically, a LoRa module is a low-power wide-area network communication device based on spread spectrum technology, capable of wireless data transmission, and widely used in the Internet of Things (IoT) field, such as... Figure 4 As shown, pin 1 of the LoRa module is used to enter parameter configuration. When powered on, it works with pin 2 to enter firmware upgrade mode. Pin 2 is used to indicate the module's working status. The combination of pin 1 and pin 2 enables the module to enter configuration, communication, and firmware upgrade functions. Pin 3 is the transistor-to-transistor logic interface serial port input, pin 4 is the transistor-to-transistor logic interface serial port output, pin 5 is the ground wire, and pin 6 is connected to the power supply.

[0034] In a specific implementation of this utility model, the power management module includes an SGM2203-3.3AYK3LG power management chip and an ME3116 asynchronous rectifier step-down regulator. Pin 2 of the SGM2203-3.3AYK3LG power management chip is connected to pin 5 of the ME3116 asynchronous rectifier step-down regulator.

[0035] Specifically, the SGM2203-3.3AYK3LG power management chip combines high voltage and low power consumption, ensuring stable power control. It features current limiting and thermal shutdown protection mechanisms to prevent damage from overload or overheating, enhancing circuit safety. The ME3116 asynchronous rectifier buck regulator has a wide input voltage range, suitable for various power supply environments, and also includes overheat shutdown, input / output undervoltage protection, and short-circuit protection to prevent damage to the chip or system under abnormal operating conditions. Figure 5 As shown, pin 2 of the SGM2203-3.3AYK3LG power management chip is connected to pin 5 of the ME3116 asynchronous rectifier step-down regulator. When the voltage is detected to be too high, it can perform step-down processing to reduce the voltage and maintain the voltage stability so that the voltage fluctuation does not change significantly within a certain range.

[0036] In a specific implementation of this utility model, the sensor assembly includes a vibration sensor and an acceleration sensor, which are respectively connected to an analog-to-digital converter.

[0037] Specifically, the vibration sensor can be an SW-420 vibration sensor, used to detect vibration data of the label device. If the label is pulled or subjected to other operations, and the detected vibration data exceeds the set value, it proves that the label device has been removed. The acceleration sensor can be a CA-DR-3005 acceleration sensor, which detects the displacement of the label device. When the displacement exceeds the preset value, it proves that the label device has been removed. The vibration sensor and acceleration sensor send analog signals to the analog-to-digital converter, which converts the analog signals into digital signals and transmits the digital signals to the main controller, realizing multiple anti-tamper detection of the label device.

[0038] In the specific implementation of this utility model, the display screen is an electronic ink screen.

[0039] Specifically, e-ink screens are used to display bicycle status information, such as manufacturing date and maintenance record summary. E-ink screens provide a clearer text viewing experience, can display vehicle status information without internet connection, and can maintain a stable image for a long battery life even after power failure.

[0040] In summary, this utility model embodiment provides an on-chain identity recognition tag device for bicycle traceability. It achieves a more reliable information verification structure through an NFC communication chip and a QR code display layer. Through the cooperation of the NFC communication chip and the anti-tamper detection circuit, it provides a physical security carrier for the tag, realizes the anti-tamper detection of the bicycle tag, can promptly detect the removal and replacement of the tag, improves the anti-counterfeiting security level of the tag, and achieves the integrated goal of anti-tampering, hardware binding and on-chain evidence storage in physical structure.

[0041] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0042] Furthermore, the above description provides a detailed introduction to an on-chain identification tag device for bicycle traceability provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A chain-link identification tag device for bicycle traceability, characterized in that, The on-chain identity recognition tag device includes: a main controller embedded in the bicycle frame, an NFC communication chip, an anti-tamper detection circuit, a data transmission circuit, a power management module, a sensor assembly, a crystal oscillator, an analog-to-digital converter, a display screen, and a QR code display layer, wherein: The main controller is connected to the NFC communication chip, the tamper detection circuit, the data transmission circuit, the power management module, the sensor assembly, the crystal oscillator, the analog-to-digital converter, the display screen, and the QR code display layer, respectively. The NFC communication chip is connected to the tamper detection circuit, the sensor assembly, the crystal oscillator, and the data transmission circuit, respectively. The sensor assembly is connected to the data transmission circuit and the analog-to-digital converter, respectively.

2. The on-chain identity recognition tag device as described in claim 1, characterized in that, The main controller uses an AT89C52 microcontroller.

3. The on-chain identity recognition tag device as described in claim 2, characterized in that, The AT89C52 microcontroller has built-in Flash read-only program memory and random access data memory.

4. The on-chain identity recognition tag device as described in claim 1, characterized in that, The NFC communication chip uses the PN7150 chip, which is connected to the main controller via an integrated circuit bus.

5. The on-chain identity recognition tag device as described in claim 4, characterized in that, Pins 36 and 37 of the PN7150 chip are connected to a crystal oscillator, pins 15 and 36 of the PN7150 chip are function mode pins, and pin 10 of the PN7150 chip is a reset pin.

6. The on-chain identity recognition tag device as described in claim 1, characterized in that, The tamper detection circuit includes a detection circuit and a detection coil. The detection circuit includes a diode, a detection capacitor, a first resistor, and a second resistor. The detection coil includes a detection feed point and an tamper detection feed point.

7. The on-chain identity recognition tag device as described in claim 1, characterized in that, The data transmission circuit includes a LoRa module.

8. The on-chain identity recognition tag device as described in claim 1, characterized in that, The power management module includes an SGM2203-3.3AYK3LG power management chip and an ME3116 asynchronous rectifier buck regulator. Pin 2 of the SGM2203-3.3AYK3LG power management chip is connected to pin 5 of the ME3116 asynchronous rectifier buck regulator.

9. The on-chain identity recognition tag device as described in claim 1, characterized in that, The sensor assembly includes a vibration sensor and an acceleration sensor, which are respectively connected to an analog-to-digital converter.

10. The on-chain identity recognition tag device as described in claim 1, characterized in that, The display screen uses an e-ink screen.

Images