Continuous blood glucose monitor based on NFC shelf life zero power consumption and method thereof

Abstract

The invention relates to the technical field of blood glucose monitors, and discloses a continuous blood glucose monitor based on NFC shelf life zero power consumption and a method thereof.The continuous blood glucose monitor based on NFC shelf life zero power consumption comprises a battery and an NFC tag device, the NFC tag device is coupled to obtain electric energy from an NFC card reader, the NFC tag device communicates with the NFC card reader, and the NFC card reader is connected with the battery. A battery main switch is controlled through the electric energy, the battery outputs power to a circuit, the battery outputting power supplies power to the Bluetooth SoC microcontroller, and the Bluetooth SoC microcontroller sends an output power supply holding signal to the battery. The battery is controlled to supply power to the Bluetooth microcontroller through cooperation of NFC and a circuit, so that zero power consumption of the battery of the continuous blood glucose monitor in the shelf life is achieved, activation information of the continuous blood glucose monitor can be obtained by inquiring the unique identification code or the ID of an operator, the legal source of a product is guaranteed, and the service life of the continuous blood glucose monitor is prolonged. And counterfeit and shoddy quality can be prevented through query in the mode.

Description

Technical Field

[0001] This invention relates to the field of blood glucose monitoring technology, specifically to a continuous blood glucose monitor and method based on NFC with zero power consumption during shelf life. Background Technology

[0002] Continuous blood glucose monitoring products are typically powered by button batteries. After production, they are stored in warehouses or on shelves until they are purchased and installed by consumers. This period is called the shelf life, and the length of the shelf life is usually unknown. Therefore, existing continuous blood glucose monitors need to provide sufficient power for the product and use magnetoresistive switches or load switches to shut down the product and minimize power consumption.

[0003] Existing continuous glucose monitors reduce power consumption during storage by using magnetoresistive switches, load switches, etc., typically 0.2~0.3uA. However, due to the uncertainty of storage time, a large portion of electrical energy still needs to be reserved for self-discharge during the shelf life of the device, which leads to the waste of this part of the power and shortens the product's battery life. Summary of the Invention

[0004] This invention provides a continuous blood glucose monitor and method based on NFC with zero power consumption over its shelf life, which has the beneficial effect of zero power consumption over its shelf life.

[0005] This invention provides the following technical solution: a continuous glucose monitor based on NFC with zero power consumption over its shelf life, comprising:

[0006] Battery;

[0007] An NFC tag, wherein the NFC tag is coupled to obtain power from an NFC reader, and the NFC tag establishes communication with the NFC reader;

[0008] The battery main switch is controlled by the electrical energy, and the battery supplies power to the circuit.

[0009] The Bluetooth SoC microcontroller is powered by the battery that outputs power.

[0010] The Bluetooth SoC microcontroller sends an output power hold signal to the battery, and the battery continuously supplies power to the circuit.

[0011] As an optional solution of the NFC-based shelf-life zero-power continuous blood glucose monitor of the present invention, wherein: the NFC tag is provided with a first storage module, and the first storage module stores a unique identification code;

[0012] The NFC reader is used to obtain the corresponding identification code in the database;

[0013] The Bluetooth SoC microcontroller has an internal judgment module;

[0014] The judgment module is used to read whether the unique identification code matches the corresponding identification code stored in the database.

[0015] As an optional solution for the NFC-based zero-power continuous blood glucose monitor of the present invention, wherein: the judgment module is used to determine whether the unique identification code corresponding to the identification code stored in the database is used for the first time; when it is determined to be used for the first time, the NFC tag and the NFC card reader handshake communication.

[0016] The NFC tag and NFC reader send a communication success flag to the Bluetooth SoC microcontroller, thereby controlling the Bluetooth SoC microcontroller to send an output power hold signal.

[0017] As an optional solution for the NFC-based shelf-life zero-power continuous blood glucose monitor of the present invention, it further includes a buzzer device, which is electrically connected to the battery;

[0018] The judgment module is used to send signals to the buzzer device to control the buzzer device to issue different alarms.

[0019] As an optional solution for the NFC-based zero-power continuous blood glucose monitor of the present invention, wherein: when the judgment module identifies that the identification code stored in the database cannot match the unique identification code, the judgment module sends a first signal to the buzzer device, and the buzzer device issues a first alarm.

[0020] As an optional solution for the NFC-based zero-power continuous blood glucose monitor of the present invention, wherein: when the judgment module determines that the unique identifier belongs to secondary use, the judgment module sends a second signal to the buzzer device, and the buzzer device issues a second alarm.

[0021] As an optional solution for the NFC-based zero-power continuous blood glucose monitor of the present invention, the NFC reader is further provided with a fingerprint module, which is used to collect the operator's fingerprint, establish an operator ID based on the operator's fingerprint, and store the operator ID in a second storage module.

[0022] As an optional solution for the NFC-based shelf-life zero-power continuous blood glucose monitor described in this invention, when the NFC tag communicates with the NFC reader, the unique identification code is copied and stored in the second storage module and bound to the operator ID.

[0023] As an optional embodiment of the NFC-based shelf-life zero-power continuous glucose monitor described in this invention, the circuit includes:

[0024] Antenna connection: ANTP and ANTN are responsible for connecting the antenna, and the LBAT54HT1G diode is used for signal reception and transmission. The information of the NFC reader is radiated outward through its own NFC antenna and coupled to the NFC antenna of the NFC tag, so that the NFC tag can obtain power.

[0025] NFC power supply uses electrical energy to charge diodes D3 and D4, capacitors C20 and C21, increasing the VCC_NFC voltage. This then powers the NFC tag and turns on the main battery switch.

[0026] BLE power supply, +VBAT as the main power supply, provides the required power to the BLE PWR HOLD module through components such as Q1 transistor, Q2 transistor, R11 resistor, WPM1488-3 / TR diode, and WNM2021-3 / TR diode;

[0027] Power holding: The BLE PWR HOLD module forms a power holding circuit through diodes D5 and D6, resistor R12 and resistor R13 to ensure that the BLE PWR HOLD module maintains a stable power supply.

[0028] A monitoring method using a continuous glucose monitor based on an NFC-enabled, shelf-life, zero-power continuous glucose monitoring system includes:

[0029] The NFC reader is placed close to the continuous glucose monitor, and the NFC antenna of the NFC reader is coupled to the NFC antenna inside the continuous glucose monitor.

[0030] NFC antenna coupling power transmission circuit;

[0031] NFC readers establish communication with each other and control the battery switch via electrical energy, with the battery supplying power to the circuit.

[0032] When the Bluetooth SoC microcontroller is powered on, it will send an output power hold signal depending on whether communication has been established.

[0033] When an NFC reader establishes communication with another NFC reader, the Bluetooth SoC microcontroller sends an output power hold signal to keep the battery powered and fully activate the continuous glucose monitor.

[0034] The present invention has the following beneficial effects:

[0035] 1. This NFC-based zero-power continuous glucose monitor and its method, wherein an NFC reader is placed close to the continuous glucose monitor, and the information of the NFC reader is radiated outward through its NFC antenna and then coupled to the NFC antenna inside the continuous glucose monitor. The power acquisition circuit obtains power from the internal NFC antenna, and the power is used to charge capacitors C20 and C21 through D3 and D4, increasing the VCC_NFC voltage. VCC_NFC serves two purposes: first, to power the NFC tag, and second, to turn on the system's main power switch, allowing the battery to power the Bluetooth microcontroller, thus achieving zero battery power consumption of the continuous glucose monitor during its shelf life.

[0036] 2. The NFC-based, shelf-life, zero-power continuous blood glucose monitor and its method identify and read a unique identification code and compare it with the identification code stored in the database through a judgment module. When the unique identification code matches the corresponding identification code stored in the database, the judgment module determines whether the unique identification code has been reactivated. If it is reactivated, the activation of the continuous blood glucose monitor is terminated, and the continuous blood glucose monitor is marked, indicating that the continuous blood glucose monitor has been used and activated or has been accidentally activated. Only products with correct operation and legal source can establish a correct connection, thus achieving the purpose of anti-counterfeiting and anti-reuse control.

[0037] 3. The NFC-based, shelf-life, zero-power continuous blood glucose monitor and its method, upon successful communication establishment, indicate that the continuous blood glucose monitor has been activated for the first time. Subsequently, the unique identification code of the continuous blood glucose monitor is bound to the operator ID. This binding is unique, indicating that the continuous blood glucose monitor is activated for the first time and activated by the corresponding operator ID, thereby improving the security of subsequent use of the continuous blood glucose monitor. When the continuous blood glucose monitor is resold, the activation information of the continuous blood glucose monitor can be obtained by querying the unique identification code or the operator ID, thereby ensuring the legitimate source of the product and preventing counterfeiting. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0039] Figure 2 This is a schematic diagram of the overall circuit of the present invention.

[0040] Figure 3 This is a flowchart illustrating the overall communication process of this invention. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] Please see Figures 1-2 One type of NFC-based, shelf-life, zero-power continuous glucose monitor includes:

[0044] Battery;

[0045] NFC tag, the NFC tag is coupled to obtain power from the NFC reader, and the NFC tag establishes communication with the NFC reader;

[0046] The battery main switch is controlled by electrical energy, and the battery outputs power to the circuit.

[0047] The Bluetooth SoC microcontroller is powered by an output battery.

[0048] The Bluetooth SoC microcontroller sends an output power hold signal to the battery, and the battery continuously supplies power to the circuit.

[0049] The circuit includes:

[0050] Antenna connection: ANTP and ANTN are responsible for connecting the antenna. Signal reception and transmission are achieved through the LBAT54HT1G diode. The information of the NFC reader is radiated outward through its own NFC antenna and coupled to the NFC antenna of the NFC tag, thereby enabling the NFC tag to obtain power.

[0051] NFC power supply uses electrical energy to charge diodes D3 and D4, capacitors C20 and C21, increasing the VCC_NFC voltage. This then powers the NFC tag and turns on the main battery switch.

[0052] BLE power supply, +VBAT as the main power supply, provides the required power to the BLE PWR HOLD module through components such as Q1 transistor, Q2 transistor, R11 resistor, WPM1488-3 / TR diode, and WNM2021-3 / TR diode;

[0053] For power retention, the BLE PWR HOLD module uses diodes D5 and D6, along with resistors R12 and R13, to form a power retention circuit, ensuring stable power supply to the BLE PWR HOLD module.

[0054] according to Figure 1 and Figure 2 As shown, when you start using it, the NFC reader is placed close to the continuous glucose monitor. The information from the NFC reader is radiated outward through its NFC antenna and then coupled to the NFC antenna inside the continuous glucose monitor.

[0055] The power acquisition circuit will obtain power from the internal NFC antenna. The power will charge capacitors C20 and C21 through D3 and D4, increasing the VCC_NFC voltage. VCC_NFC will then power the NFC tag and turn on the system's main power switch, allowing the battery to power the Bluetooth SoC microcontroller.

[0056] If the NFC tag successfully communicates with the card reader and sets a communication success flag, the Bluetooth SoC microcontroller will read the communication success flag after startup and then control the output power supply hold signal to keep the system power supply main switch on.

[0057] Thus, when the shelf life is two years, zero switching loss is achieved through NFC, which is about 0.2~0.3uA less than the switching power consumption of existing technologies, saving 3.5~5.2mAh, accounting for 14%~21% of a 25mAh battery.

[0058] It is important to note that NFC devices obtain energy from the emitted radio frequency field through electromagnetic induction, enabling passive operation. The specific mechanism is as follows:

[0059] The mobile phone's NFC module emits a 13.56MHz radio frequency field. When a passive NFC tag enters this magnetic field, it generates an induced current through electromagnetic induction. The induced current is converted into a DC voltage by a rectifier circuit, which powers the tag chip and activates its functional modules.

[0060] It is important to note that a system-on-a-chip (SoC) is a product, an integrated circuit with a specific purpose, containing a complete system and all embedded software. At the same time, it is also a technology used to realize the entire process from determining the system functions to software or hardware partitioning and completing the design.

[0061] Example 2

[0062] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figures 1-2 The NFC tag has a first storage module, which stores a unique identification code.

[0063] NFC card readers are used to obtain the corresponding identification code from the database;

[0064] The Bluetooth SoC microcontroller has an internal judgment module;

[0065] The judgment module is used to read whether the unique identification code matches the corresponding identification code stored in the database;

[0066] The judgment module is used to determine whether the unique identification code corresponding to the identification code stored in the database is being used for the first time. When it is determined to be the first time, the NFC tag and the NFC reader handshake and communicate.

[0067] The NFC tag and NFC reader send a communication success flag to the Bluetooth SoC microcontroller, thereby controlling the Bluetooth SoC microcontroller to send an output power hold signal.

[0068] The NFC reader can be operated using a mobile phone's NFC function. The operator holds the mobile phone and brings it close to the NFC tag, transmitting the corresponding identification code from the cloud database through the mobile phone's NFC.

[0069] according to Figure 2 As shown, the judgment module reads the unique identification code and compares it with the identification code stored in the database. When the unique identification code matches the corresponding identification code stored in the database, the judgment module determines whether the unique identification code has been reactivated. If it is a reactivation, the activation of the continuous glucose monitor ends, and the continuous glucose monitor is marked, indicating that the continuous glucose monitor has been used and activated or has been accidentally activated. Only products with correct operation and legitimate sources can establish a correct connection, achieving the purpose of anti-counterfeiting and anti-reuse control. If it is not the first activation, the NFC tag and NFC reader establish a handshake communication. This allows the NFC tag and NFC reader to send a communication success flag to the Bluetooth SoC microcontroller, thereby controlling the Bluetooth SoC microcontroller to send an output power hold signal, ensuring continuous battery power and thus fully activating the continuous glucose monitor.

[0070] Example 3

[0071] This embodiment is an improvement upon embodiment 2. For details, please refer to [link / reference]. Figures 1-3 It also includes a buzzer device, which is electrically connected to the battery;

[0072] The judgment module is used to send signals to the buzzer to control the buzzer to emit different alarms;

[0073] When the judgment module recognizes that the identification code stored in the database cannot be matched with the unique identification code, the judgment module sends a first signal to the buzzer device, and the buzzer device issues a first alarm.

[0074] When the judgment module determines that the unique identifier belongs to secondary use, the judgment module sends a second signal to the buzzer device, and the buzzer device sounds a second alarm.

[0075] The buzzer device is a dual-tone buzzer.

[0076] The first signal corresponds to the first alarm;

[0077] The second signal corresponds to the second alarm.

[0078] according to Figure 1 As shown, when the judgment module sends the first signal to the buzzer device, the dual-tone buzzer executes the first signal and issues the first alarm, indicating that the identification code stored in the database cannot be matched with the unique identification code.

[0079] When the judgment module sends a second signal to the buzzer, the dual-tone buzzer executes the second signal and issues a second alarm, indicating that the continuous blood glucose monitor has been activated a second time, indicating that there has been a false touch or that it has already been used.

[0080] Example 4

[0081] This embodiment is an improvement upon embodiment 3. For details, please refer to [link / reference]. Figures 1-3 The NFC card reader is also equipped with a fingerprint module, which is used to collect the operator's fingerprint and establish an operator ID based on the operator's fingerprint. The operator ID is stored in the second storage module.

[0082] When the NFC tag and the NFC reader communicate, the unique identification code is copied and stored in the second storage module and bound to the operator ID.

[0083] To further enhance security and reduce accidental activation, a fingerprint module is installed on the NFC reader. All operators' fingerprints are used to create an operator ID. When the continuous glucose monitor (CGM) needs to be activated, the operator's fingerprint must first be verified through the fingerprint module. After successful verification, the operator holds the NFC reader and establishes communication with the NFC tag. Successful communication indicates that the CGM has been activated for the first time. Subsequently, the unique identifier of the CGM is bound to the operator ID. This unique binding signifies that the CGM is being activated for the first time by the corresponding operator ID, thus improving the security of subsequent use. If the CGM is resold, the activation information can be retrieved by querying the unique identifier or the operator ID, ensuring the product's legitimate origin and preventing counterfeiting.

[0084] Example 5

[0085] A monitoring method using a continuous glucose monitor based on an NFC-enabled, shelf-life, zero-power continuous glucose monitoring system includes:

[0086] The NFC reader is placed close to the continuous glucose monitor, and the NFC antenna of the NFC reader is coupled to the NFC antenna inside the continuous glucose monitor.

[0087] NFC antenna coupling power transmission circuit;

[0088] NFC readers establish communication with each other and control the battery switch via electrical energy, with the battery supplying power to the circuit.

[0089] When the Bluetooth SoC microcontroller is powered on, it will send an output power hold signal depending on whether communication has been established.

[0090] When an NFC reader establishes communication with another NFC reader, the Bluetooth SoC microcontroller sends an output power hold signal to keep the battery powered and fully activate the continuous glucose monitor.

[0091] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0092] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A NFC shelf-life zero-power based continuous glucose monitor, characterized in that, Comprise: Battery; NFC tag, the NFC tag is coupled to obtain electric energy from the NFC card reader, the NFC tag establishes communication with the NFC card reader; The battery controls the battery total switch by the electric energy, and the battery outputs power supply to the circuit; Bluetooth SoC microcontroller, the battery outputs power supply to the Bluetooth SoC microcontroller; The Bluetooth SoC microcontroller sends output power supply holding signal to the battery, and the battery continues to supply power to the circuit.

2. The NFC based shelf-life zero-power continuous glucose monitor of claim 1, wherein: The first storage module is arranged in the NFC tag, and the first storage module stores a unique identification code; The NFC card reader is used to obtain the corresponding identification code in the database; The Bluetooth SoC microcontroller is internally provided with a judgment module; The judgment module is used to read whether the unique identification code matches the corresponding identification code stored in the database.

3. The NFC based shelf life zero power continuous glucose monitor of claim 2, wherein: The judgment module is used to judge whether the unique identification code corresponding to the identification code stored in the database is used for the first time, and when judging for the first time, the NFC tag and the NFC card reader handshake communication; The NFC tag and the NFC card reader handshake communication send a communication success flag to the Bluetooth SoC microcontroller, so as to control the Bluetooth SoC microcontroller to send output power supply holding signal.

4. The NFC based shelf-life zero-power continuous glucose monitor of claim 3, wherein: Further comprising a buzzer device, the buzzer device is electrically connected with the battery; The judgment module is used to send a signal to the buzzer device to control the buzzer device to send different alarms.

5. The NFC based shelf life zero power continuous glucose monitor of claim 4, wherein: When the judgment module identifies that the identification code stored in the database cannot match the unique identification code, the judgment module sends a first signal to the buzzer device, and the buzzer device sends a first alarm.

6. The NFC based shelf life zero power continuous glucose monitor of claim 4, wherein: When the judgment module judges that the unique identification belongs to secondary use, the judgment module sends a second signal to the buzzer device, and the buzzer device sends a second alarm.

7. The NFC based shelf-life zero-power continuous glucose monitor of claim 6, wherein: The NFC card reader is further provided with a fingerprint module, the fingerprint module is used to collect operator fingerprint, and operator ID is established according to the operator fingerprint, and the operator ID is stored in the second storage module.

8. The NFC based shelf life zero power continuous glucose monitor of claim 7, wherein: When the NFC tag and the NFC card reader handshake communication, the unique identification code is copied and stored in the second storage module, and is bound with the operator ID.

9. The NFC based shelf life zero power continuous glucose monitor of claim 8, wherein: The circuit comprises: Antenna connection, ANTP and ANTN are responsible for connecting the antenna, receiving and transmitting signals through LBAT54HT1G diode, the information of the NFC card reader is radiated to the NFC antenna of the NFC tag through the NFC antenna of the NFC card reader, so that the NFC tag obtains electric energy; NFC power supply, the electric energy is used to charge D3 diode, D4 diode, C20 capacitor and C21 capacitor, VCC_NFC voltage rises, and the NFC tag is powered through VCC_NFC and the battery total switch is opened; BLE power supply, +VBAT as main power supply, through Q1 transistor, Q2 transistor, R11 resistor and WPM1488-3 / TR diode, WNM2021-3 / TR diode, the required power supply is provided for BLE PWR HOLD module; The power supply is kept stable by the BLE PWR HOLD module through a power supply keeping circuit formed by D5 diode, D6 diode, R12 resistor and R13 resistor.

10. A method of applying a NFC based shelf-life zero-power continuous glucose monitor, characterized in that, Comprise: The NFC card reader is close to the continuous glucose monitor, and the NFC antenna in the NFC card reader is coupled with the NFC antenna inside the continuous glucose monitor; The NFC antenna is coupled with the electric energy transmission circuit; The NFC card reader and the NFC card reader establish communication, and the battery outputs power to the circuit through the battery switch controlled by the electric energy; The Bluetooth SoC microcontroller is powered on, and the Bluetooth SoC microcontroller selects to send an output power supply keeping signal according to whether communication is established; When the NFC card reader and the NFC card reader establish communication, the Bluetooth SoC microcontroller sends an output power supply keeping signal, so that the battery continuously supplies power and fully activates the continuous glucose monitor.

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