A battery-free luggage bluetooth fingerprint lock device and a battery-free lock opening and closing method

Abstract

The present invention discloses a battery-free luggage Bluetooth fingerprint lock device and an implementation method thereof, comprising a rectifying antenna 1 connected to an input terminal V of a first voltage detection circuit. in With the input of the energy harvesting circuit, the output of the first voltage detection circuit V OD1 Connect the enable terminal of the energy harvesting circuit, the output V of the first voltage detection circuit OD1 It is connected to the first output VC of the energy collection circuit through the pull-up resistor R1, the first output VC is connected to one end of the capacitor C0, the second output VS of the energy collection circuit is connected to one end of the capacitor C1 and the input of the power management module, and the output of the power management module is connected to the power input end of the fingerprint recognition module, the Bluetooth module and the digital signal processing and control module; the communication antenna is connected to the Bluetooth module, and the fingerprint recognition module and the Bluetooth module are connected to the digital signal processing and control module through the data transmission interface; the input of the rectifying antenna is continuously monitored without consuming system power consumption, thereby reducing the power consumption of the energy collection system itself and the load, and no external power supply is required.

Description

Technical Field

[0001] The invention belongs to the technical field of luggage safety, and in particular relates to a battery-free luggage Bluetooth fingerprint lock device and a battery-free lock opening and closing method. Background Art

[0002] Due to the security issues of traditional password lock suitcases, suitcases using more advanced Bluetooth and fingerprint lock technology are becoming increasingly popular. Among them, battery-powered fingerprint locks cannot be boarded or checked in due to flight safety restrictions, which greatly limits the application of this technology in suitcases.

[0003] If energy harvesting can be used to power the system, the safety restrictions in its transportation can be resolved. Generally, the application of energy harvesting technology is difficult to promote due to its low efficiency and the large amount of energy collected compared to the load standby power consumption. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a battery-free luggage Bluetooth fingerprint lock device and a battery-free switch lock method, which simultaneously reduces the power consumption of the energy collection system itself and the load, integrates Bluetooth and fingerprint lock, and allows the energy collected by the system to meet the load requirements.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is a battery-free luggage Bluetooth fingerprint lock device, including a rectifying antenna, a first voltage detection circuit, an energy collection circuit, a power management module, a communication antenna, a fingerprint recognition module, a Bluetooth module and a digital signal processing and control module, wherein the rectifying antenna is connected to the input terminal V of the first voltage detection circuit. in With the input of the energy harvesting circuit, the output of the first voltage detection circuit V OD1 Connect the enable terminal of the energy harvesting circuit, the output V of the first voltage detection circuit OD1 It is connected to the first output VC of the energy collection circuit through the pull-up resistor R1, the first output VC is connected to one end of the capacitor C0, the second output VS of the energy collection circuit is connected to one end of the capacitor C1 and the input of the power management module, and the output of the power management module is connected to the power input end of the fingerprint recognition module, the Bluetooth module and the digital signal processing and control module; the communication antenna is connected to the Bluetooth module, and the fingerprint recognition module and the Bluetooth module are connected to the digital signal processing and control module through the data transmission interface; the other ends of the capacitor C0 and the capacitor C1 are both grounded, and the grounding ends of the first voltage detection circuit, the energy collection circuit and the power management module are all grounded.

[0006] The communication antenna is also connected to the input terminal V of the second voltage detection circuit. in , the output of the second voltage detection circuit V OD2The second voltage detection circuit is connected to the second output VS of the energy collection circuit and the enable terminal of the Bluetooth fingerprint lock through the pull-up resistor R2, and the ground terminal of the second voltage detection circuit is grounded.

[0007] The second voltage detection circuit is the same as the first voltage detection circuit.

[0008] It also includes a pressure sensor group, a third voltage detection circuit and a liquid crystal display module, the pressure sensor group is connected to the input end of the digital signal processing and control module, and the output end of the digital signal processing and control module is connected to the input end of the liquid crystal display module;

[0009] The analog output V of the pressure sensor group P is connected to the input of the third voltage detection circuit, the output V OD3 The pull-up resistor R3 is connected to the second output VS of the energy collection circuit, and the output V OD3 They are respectively connected to the enable terminals of the digital signal processing and control module and the liquid crystal display module, and the ground terminal of the third voltage detection circuit is grounded.

[0010] The third voltage detection circuit is the same as the first voltage detection circuit.

[0011] The output of the power management module includes the first output V1 of the power management module, the second output V2 of the power management module and the third output V3 of the power management module. The power input end of the pressure sensor group is connected to the first output V1 of the power management module, the power input end of the digital signal processing and control module is connected to the second output V2 of the power management module, and the power input ends of the fingerprint recognition module and the Bluetooth module are connected to the third output V3 of the power management module.

[0012] The first voltage detection circuit includes a high-voltage monitoring circuit, a medium-voltage monitoring circuit and a low-voltage monitoring circuit. The V0H output of the high-voltage monitoring circuit is connected to the control end of the medium-voltage monitoring circuit, the V0M output of the medium-voltage monitoring circuit is connected to the control end of the low-voltage monitoring circuit, and the VOD1 output of the high-voltage monitoring circuit, the VOD2 output of the medium-voltage monitoring circuit and the VOD3 output of the low-voltage monitoring circuit are all connected to the output VOD1 of the LX01 voltage monitoring circuit.

[0013] Method for implementing a battery-free luggage Bluetooth fingerprint lock device, when V in The voltage is lower than the threshold value V of the first voltage detection circuit TH When the output of the first voltage detection circuit V OD1 Keep low level, when V in The voltage is higher than the threshold value V of the first voltage detection circuit TH When the output of the first voltage detection circuit V OD1 transitions to high level and remains high until V inThe voltage is lower than the falling threshold V of the first voltage detection circuit TL ; When the output V of the first voltage detection circuit OD1 When it is high level, it is pulled to the same level as VC through the pull-up resistor R1, and the capacitor C0 is used as the cold start energy storage capacitor of the energy collection circuit; the second output VS of the energy collection circuit is the output end collected by the maximum power tracking method, and the capacitor C1 is used as the energy storage capacitor. The power management module converts the second output VS of the energy collection circuit into a DC power supply suitable for the load power supply; and supplies power to the fingerprint recognition module, the Bluetooth module and the digital signal processing and control module; when there is no input signal, V OD1 When the voltage is low, the energy harvesting circuit stops working.

[0014] The communication antenna and the input terminal V of the second voltage detection circuit in Connect the output of the second voltage detection circuit V OD2 The output V of the second voltage detection circuit is connected to VS through a pull-up resistor R2. When there is a communication demand, the output V of the second voltage detection circuit is pulled up by the pull-up resistor R2. OD2 Pull up to the same level as VS as the enable signal of the Bluetooth fingerprint lock system. When the Bluetooth module in the Bluetooth fingerprint lock system has no communication requirements, V OD2 The second voltage detection circuit uses the signal rectified by the communication antenna as its power source, and the communication antenna is connected to the Bluetooth module to send and receive signals. The Bluetooth module and the fingerprint recognition module in the Bluetooth fingerprint lock system are bidirectionally connected to the digital signal processing and control module through the data transmission interface, and the fingerprint recognition module collects fingerprint information; the Bluetooth module receives the unlocking signal from the communication terminal paired with it, and the digital signal processing and control module sends an unlocking instruction to the Bluetooth fingerprint lock system after receiving the information from the Bluetooth module or the fingerprint recognition module.

[0015] The input of the digital signal processing and control module is connected to the pressure sensor group, and the detection data of the pressure sensor group is transmitted to the digital signal processing and control module. The analog output V P is connected to the input of the third voltage detection circuit, the output V OD3 The pull-up resistor R3 is connected to the second output VS of the energy collection circuit, and the output V OD3 The digital signal processing and control module and the liquid crystal display module are respectively connected to the enabling end; the data transmission interface of the digital signal processing and control module receives the data generated by the pressure sensor group, and transmits the data to the communication terminal paired with Bluetooth through the Bluetooth communication module; at the same time, the output of the digital signal processing and control module is connected to the input of the liquid crystal display module, and the weighing result is displayed in the liquid crystal display module.

[0016] The analog output V of the pressure sensor group P As the third voltage detection circuit input signal,

[0017] When there is a need for weighing, the analog output V of the pressure sensor group P is high level, at V OD3 The output of the third voltage detection circuit V is pulled high by the pull-up resistor R3. OD3 Pull to VS;

[0018] When there is no weighing requirement, the analog output V P is low level, the output V OD3 is also low level, at this time, the output V OD3 Turn off the digital signal processing and control module and the liquid crystal display module.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The first voltage detection circuit uses the signal rectified by the rectenna as its power supply, and can continuously monitor the input of the rectenna without consuming system power. The energy collection circuit uses the signal rectified by the rectenna as input, while reducing the power consumption of the energy collection system itself and the load. It integrates Bluetooth and fingerprint locks so that the energy collected by the system meets the load requirements. No external power supply is required, so that the addition of a Bluetooth fingerprint lock to the suitcase is not restricted by external power supply. The power management module can provide different rated voltages according to the design.

[0021] Furthermore, the input end of the second voltage detection circuit uses the signal rectified by the communication antenna as its power source, and can continuously monitor the communication antenna without consuming system power consumption, thereby effectively reducing the power consumption of the Bluetooth module.

[0022] Furthermore, the pressure sensor group enables the suitcase to have a weighing function and display the weighing results, which greatly improves its convenience of use. At the same time, the zero-power continuous voltage detection technology is used to reduce power consumption during weighing, and no external power supply is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0024] Figure 2 It is a signal control schematic diagram of the first voltage detection circuit in the present invention.

[0025] 1-rectifying antenna, 2-first voltage detection circuit, 3-energy collection circuit, 4-power management module, 5-communication antenna, 6-second voltage detection circuit, 7-fingerprint recognition module, 8-mechanical lock, 9-Bluetooth module, 10-digital signal processing and control module, 11-pressure sensor group, 12-third voltage detection circuit, 13-liquid crystal display module. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings.

[0027] The energy collection system includes a rectifying antenna, a first voltage detection circuit 2, an energy collection circuit 3 and a power management module 4; wherein the rectifying antenna 1 in the energy collection system and the input terminal V of the first voltage detection circuit 2 are connected to each other. in Connect the output terminal V of the first voltage detection circuit 2 OD1 The pull-up resistor R1 is connected to one of the outputs VC of the energy collection circuit 3, and the two ends of the pull-up resistor R1 are respectively connected to the output V OD1 and one of the outputs VC of the energy collection circuit 3; an output terminal V OD1 It is connected to the enable end of the energy collection circuit 3, and the rectifying antenna 1 is also connected to the input of the energy collection circuit 3. One of the outputs VC of the energy collection circuit 3 is connected to one end of the capacitor C0, and the other end of the capacitor C0 is grounded. The second output VS of the energy collection circuit is connected to one end of the capacitor C1, and the other end of the capacitor C1 is grounded. The second output VS of the energy collection circuit is connected to the input of the power management module 4, and the outputs of the power management module 4 are respectively the first output V1, the second output V2 and the third output V3; the grounding ends of the power management module 4, the first voltage detection circuit 2 and the energy collection circuit 3 are grounded.

[0028] The Bluetooth fingerprint lock system includes a communication antenna 5, a second voltage detection circuit 6 and a fingerprint lock system, and the fingerprint lock system includes a mechanical lock 8, a fingerprint recognition module 7 and a Bluetooth module 9. The communication antenna 5 in the Bluetooth fingerprint lock system and the input terminal V of the second voltage detection circuit 6 in The communication antenna 5 is connected to the Bluetooth module 9, and the output V of the second voltage detection circuit 6 is OD2 Through the pull-up resistor R2, the second output VS of the energy collection circuit and the enable end of the fingerprint recognition module 7 and the Bluetooth module 9 are connected, and the power supply of the fingerprint recognition module 7 and the Bluetooth module 9 is connected to the third output V3 to power the fingerprint recognition module 7 and the Bluetooth module 9. At the same time, the Bluetooth fingerprint lock system has a data transmission interface, which is communicated with the weighing display system to realize data transmission.

[0029] The weighing display system also includes a pressure sensor group 11, a digital signal processing and control module 10 and a liquid crystal display module 13. The power supply of the pressure sensor group 11 is connected to the first output V1, the pressure sensor group 11 has a data transmission interface, the data transmission interface of the pressure sensor group 11 is connected to the input end of the digital signal processing and control module, and the analog output V P The digital signal processing and control module 10 is connected to the input of the third voltage detection circuit 12 as the input signal of the third voltage detection circuit 12, the power supply of the digital signal processing and control module 10 is connected to the second output V2, the output of the digital signal processing and control module 10 is connected to the input of the liquid crystal display module, and the output V of the third voltage detection circuit 12 is connected to the output of the liquid crystal display module 10. OD3 The pull-up resistor R3 is connected to the second output VS of the energy collection circuit, and the output V OD3 They are respectively connected to the enable terminals of the digital signal processing and control module 10 and the liquid crystal display module 13 .

[0030] The voltage detection circuit of the present invention comprises a first voltage detection circuit 2, a second voltage detection circuit 6 and a third voltage detection circuit 12. The voltage detection circuit of the present invention can adopt the solution described in the patent application number 2017109715319, entitled A voltage signal source real-time continuous monitoring device and monitoring method thereof.

[0031] The energy harvesting circuit collects energy from the rectenna and stores it in a capacitor. The power management module adjusts the output voltage to provide power to the Bluetooth fingerprint lock system and the weighing display system respectively.

[0032] The energy collection system of the present invention adopts an energy collection circuit based on LTC3588; or adopts a MaximMAX17710 energy collector and protector energy collection system and a power management module to realize energy collection and power management.

[0033] like Figure 1 As shown, the present invention includes an energy collection system, a Bluetooth fingerprint lock system and a weighing display system.

[0034] The rectenna 1 in the energy collection system and the input terminal V of the first voltage detection circuit 2 are connected. in When V in The voltage is lower than the threshold value V of the first voltage detection circuit 2 TH When the output V of the first voltage detection circuit 2 OD1 Keep low level, when V in The voltage is higher than the threshold value V of the first voltage detection circuit 2 TH When the output V of the first voltage detection circuit 2 OD1 transitions to high level and remains high until Vin The voltage is lower than the falling threshold V of the first voltage detection circuit 2 TL , its signal diagram is as follows Figure 2 As shown. The output V of the first voltage detection circuit 2 OD1 The pull-up resistor R1 is connected to one of the outputs VC of the energy collection circuit 3. One of the outputs VC of the energy collection circuit 3 is the cold start output of the energy collection circuit 3. One of the outputs VC of the energy collection circuit 3 is connected to the other end of R1. When the output V OD1 When it is high level, it is pulled to the same level as VC through the pull-up resistor R1, and the capacitor C0 serves as the cold start energy storage capacitor of the energy collection circuit. The second output VS of the energy collection circuit 3 is the output end collected by the maximum power tracking method. The second output VS of the energy collection circuit 3 is connected to the capacitor C1, and the capacitor C1 serves as the energy storage capacitor. At the same time, the second output VS of the energy collection circuit 3 is connected to the input of the power management module 4. Since the level of the second output VS of the energy collection circuit 3 has not been adjusted and is not suitable as the power supply of the load, the second output VS of the energy collection circuit 3 is converted into a DC power supply by the power management module 4, and converted into the first output V1, the second output V2 and the third output V3 suitable for the load power supply; when there is no input signal, V OD1 When the voltage is low, the energy collection circuit 3 stops working and does not consume static power. The input end of the first voltage detection circuit 2 uses the signal rectified by the rectenna as its power supply, so the input of the rectenna 1 can be continuously monitored without consuming system power.

[0035] The communication antenna 5 in the Bluetooth fingerprint lock system and the input terminal V of the second voltage detection circuit 6 in Connect the output V of the second voltage detection circuit 6 OD2 The output V of the second voltage detection circuit 6 is connected to VS through a pull-up resistor R2. When there is a communication demand, the output V of the second voltage detection circuit 6 is pulled up by the pull-up resistor R2. OD2 Pull up to the same level as VS, as the enable signal of the Bluetooth fingerprint lock system, when there is no communication demand, the Bluetooth module 9 in the Bluetooth fingerprint lock system OD2The second voltage detection circuit 6 uses the signal rectified by the communication antenna 5 as its power source at the input end. Therefore, the communication antenna 5 can be continuously monitored without consuming system power. In the Bluetooth fingerprint lock system, the Bluetooth module 9 and the fingerprint recognition module 7 are both connected to the digital signal processing and control module for two-way communication. The communication antenna 5 is connected to the Bluetooth module 9 for signal transmission and reception, and can control unlocking. The fingerprint recognition module 7 collects fingerprint information and can control unlocking. The mechanical lock 8 is used as a backup unlocking method. The power supply of the Bluetooth fingerprint lock system is connected to the third output V3, and the third output V3 supplies power to the fingerprint recognition and Bluetooth modules. At the same time, the Bluetooth fingerprint lock system has a data transmission interface, which receives the data processing results of the weighing system and transmits the data to the communication terminal paired with Bluetooth through Bluetooth communication.

[0036] The power input end of the pressure sensor group in the weighing display system is connected to the first output V1. The pressure sensor group 11 has a data transmission interface. The data transmission interface of the pressure sensor group 11 is connected to the input of the digital signal processing and control module 10. The detection data of the pressure sensor group 11 is transmitted to the digital signal processing and control module 10. The analog output V P is connected to the input of the third voltage detection circuit 12 as the input signal of the third voltage detection circuit 12, and the output V OD3 Connect to VS through pull-up resistor R3. OD3 The output of the third voltage detection circuit 12 is pulled high by the pull-up resistor R3. OD3 Pull to VS. The power supply of the digital signal processing and control module 10 is connected to the second output V2. The data transmission interface of the digital signal processing and control module 10 receives the data generated by the pressure sensor group 11 and transmits the data to the communication terminal paired with Bluetooth through the Bluetooth module 9. At the same time, the output of the digital signal processing and control module 10 is connected to the input of the liquid crystal display module 13, and the weighing result can be displayed on the liquid crystal display module. When there is no weighing demand, the analog output V P is low level, the output V of the third voltage detection circuit 12 OD3 is also at a low level. At this time, the output V OD3 The digital signal processing and control module 10 and the liquid crystal display module are turned off to not consume static power.

Claims

1. A battery-free luggage Bluetooth fingerprint lock device, characterized in that: The invention comprises a rectifying antenna (1), a first voltage detection circuit (2), an energy collection circuit (3), a power management module (4), a communication antenna (5), a fingerprint recognition module (7), a Bluetooth module (9) and a digital signal processing and control module (10), wherein the rectifying antenna (1) is connected to an input terminal V of the first voltage detection circuit (2). in The input of the energy collection circuit (3) and the output V of the first voltage detection circuit (2) OD1 The enable terminal of the energy collection circuit (3) is connected to the output V of the first voltage detection circuit (2). OD1 The first output VC of the energy collection circuit is connected via a pull-up resistor R1, the first output VC is connected to one end of a capacitor C0, the second output VS of the energy collection circuit is connected to one end of the capacitor C1 and the input of a power management module, the output of the power management module is connected to the power input end of a fingerprint recognition module (7), a Bluetooth module (9) and a digital signal processing and control module (10); the communication antenna (5) is connected to the Bluetooth module (9), the fingerprint recognition module (7) and the Bluetooth module (9) are connected to the digital signal processing and control module (10) via a data transmission interface; the other ends of the capacitor C0 and the capacitor C1 are both grounded, and the grounding ends of the first voltage detection circuit (2), the energy collection circuit (3) and the power management module (4) are all grounded.

2. The battery-free luggage Bluetooth fingerprint lock device according to claim 1, characterized in that: The communication antenna (5) is also connected to the input terminal V of the second voltage detection circuit (6). in , the output V of the second voltage detection circuit (6) OD2 The second voltage detection circuit (6) is connected to the second output VS of the energy collection circuit and the enable terminal of the Bluetooth fingerprint lock via the pull-up resistor R2, and the ground terminal is grounded.

3. The battery-free luggage Bluetooth fingerprint lock device according to claim 2, characterized in that: The second voltage detection circuit (6) is the same as the first voltage detection circuit (2).

4. The battery-free luggage Bluetooth fingerprint lock device according to claim 1, characterized in that: It also includes a pressure sensor group (11), a third voltage detection circuit (12) and a liquid crystal display module (13), wherein the pressure sensor group (11) is connected to an input end of the digital signal processing and control module (10), and an output end of the digital signal processing and control module (10) is connected to an input end of the liquid crystal display module (13); The analog output V of the pressure sensor group (11) P is connected to the input of the third voltage detection circuit (12), and the output V OD3 The pull-up resistor R3 is connected to the second output VS of the energy collection circuit, and the output V OD3 They are respectively connected to the enable terminals of the digital signal processing and control module (10) and the liquid crystal display module (13), and the ground terminal of the third voltage detection circuit (12) is grounded.

5. The battery-free luggage Bluetooth fingerprint lock device according to claim 4, characterized in that: The third voltage detection circuit (12) is the same as the first voltage detection circuit (2).

6. The battery-free luggage Bluetooth fingerprint lock device according to claim 4, characterized in that: The output of the power management module includes a first output V1 of the power management module, a second output V2 of the power management module, and a third output V3 of the power management module; the power input end of the pressure sensor group (11) is connected to the first output V1 of the power management module; the power input end of the digital signal processing and control module (10) is connected to the second output V2 of the power management module; and the power input ends of the fingerprint recognition module (7) and the Bluetooth module (9) are connected to the third output V3 of the power management module.

7. The battery-free luggage Bluetooth fingerprint lock device according to claim 1, characterized in that: The first voltage detection circuit (2) comprises a high voltage monitoring circuit, a medium voltage monitoring circuit and a low voltage monitoring circuit, wherein the V0H output of the high voltage monitoring circuit is connected to the control end of the medium voltage monitoring circuit, the V0M output of the medium voltage monitoring circuit is connected to the control end of the low voltage monitoring circuit, and the VOD1 output of the high voltage monitoring circuit, the VOD2 output of the medium voltage monitoring circuit and the VOD3 output of the low voltage monitoring circuit are all connected to the output VOD1 of the LX01 voltage monitoring circuit.

8. A battery-free lock and unlock method for a battery-free luggage Bluetooth fingerprint lock device, characterized in that: Based on the battery-free luggage Bluetooth fingerprint lock device according to any one of claims 1 to 7, when V in The voltage is lower than the threshold value V of the first voltage detection circuit (2) TH When the output of the first voltage detection circuit (2) is OD1 Keep low level, when V in The voltage is higher than the threshold value V of the first voltage detection circuit (2) TH When the output of the first voltage detection circuit (2) is OD1 transitions to high level and remains high until V in The voltage is lower than the falling threshold V of the first voltage detection circuit (2) TL ; When the output V of the first voltage detection circuit (2) OD1 When it is at a high level, it is pulled to the same level as VC through the pull-up resistor R1, and the capacitor C0 serves as a cold start energy storage capacitor of the energy collection circuit; the second output VS of the energy collection circuit (3) is an output end collected by the maximum power tracking method, and the capacitor C1 serves as an energy storage capacitor. The power management module (4) performs a DC conversion on the second output VS of the energy collection circuit (3) to convert it into an output suitable for the load power supply; and supplies power to the fingerprint recognition module (7), the Bluetooth module (9) and the digital signal processing and control module (10); when there is no input signal, V OD1 When the voltage is low, the energy collection circuit (3) stops working.

9. The battery-free opening and closing method of the battery-free luggage Bluetooth fingerprint lock device according to claim 8, characterized in that: The communication antenna (5) and the input terminal V of the second voltage detection circuit (6) in The output V of the second voltage detection circuit (6) is connected OD2 The output V of the second voltage detection circuit (6) is connected to VS through a pull-up resistor R2. OD2 Pull up to the same level as VS, as the enable signal of the Bluetooth fingerprint lock system. When there is no communication demand, the Bluetooth module (9) in the Bluetooth fingerprint lock system, V OD2 The Bluetooth module (9) is turned off when the voltage level of the second voltage detection circuit (6) is low, the signal rectified by the communication antenna (5) is used as the power supply of the input end of the second voltage detection circuit (6), the communication antenna (5) is connected to the Bluetooth module (9) to perform signal transmission and reception, the Bluetooth module (9) and the fingerprint recognition module (7) in the Bluetooth fingerprint lock system are bidirectionally connected to the digital signal processing and control module (10) through the data transmission interface, and the fingerprint recognition module (7) collects fingerprint information; the Bluetooth module (9) receives the unlocking signal of the communication terminal paired with it, and the digital signal processing and control module (10) sends an unlocking instruction to the Bluetooth fingerprint lock system after receiving the information of the Bluetooth module (9) or the fingerprint recognition module (7).

10. The battery-free opening and closing method of the battery-free luggage Bluetooth fingerprint lock device according to claim 8, characterized in that: The input of the digital signal processing and control module (10) is connected to a pressure sensor group (11), detection data of the pressure sensor group (11) is transmitted to the digital signal processing and control module (10), and an analog output V of the pressure sensor group (11) is P is connected to the input of the third voltage detection circuit (12), and the output V OD3 The pull-up resistor R3 is connected to the second output VS of the energy collection circuit, and the output V OD3 The digital signal processing and control module (10) and the liquid crystal display module (13) are respectively connected to the enabling end; the data transmission interface of the digital signal processing and control module (10) receives the data generated by the pressure sensor group (11), and transmits the data to the communication terminal paired with the Bluetooth through the Bluetooth communication module; at the same time, the output of the digital signal processing and control module (10) is connected to the input of the liquid crystal display module (13), and the weighing result is displayed in the liquid crystal display module. The analog output V of the pressure sensor group (11) P As the input signal of the third voltage detection circuit (12), When there is a need for weighing, the analog output V of the pressure sensor group (11) P is high level, at V OD3 The output voltage V of the third voltage detection circuit (12) is high level, and the output voltage V of the third voltage detection circuit (12) is high level through the pull-up resistor R3. OD3 Pull to VS; When there is no weighing requirement, the analog output V of the pressure sensor group (11) P is low level, the output V of the third voltage detection circuit (12) OD3 is also at a low level. At this time, the output V OD3 The digital signal processing and control module (10) and the liquid crystal display module are turned off.

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