CN114005197A - High integrated system of fingerprint lock - Google Patents
High integrated system of fingerprint lock Download PDFInfo
- Publication number
- CN114005197A CN114005197A CN202110984489.0A CN202110984489A CN114005197A CN 114005197 A CN114005197 A CN 114005197A CN 202110984489 A CN202110984489 A CN 202110984489A CN 114005197 A CN114005197 A CN 114005197A
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- China
- Prior art keywords
- interface
- mcu
- fingerprint
- mcu chip
- antenna
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention provides a high integration system of a fingerprint lock, which comprises an interface end, an MCU (microprogrammed control unit) main control end and a fingerprint head end, and is characterized in that an MCU chip is integrated to the fingerprint head end and is positioned on the same circuit board, the MCU chip is connected with the fingerprint head through a UART (universal asynchronous receiver/transmitter) interface or an SPI (serial peripheral interface), and the MCU chip realizes an expansion function through a bus access port; the bus access port comprises a burning port, and the burning port is accessed to the MCU chip through a UART interface or an SWD interface and is used for realizing software upgrading. The invention has the beneficial effects that: the structure is highly integrated, meanwhile, abnormal communication conditions of fingerprints and the MCU can be avoided, the communication distance is effectively increased, and function expansion is realized.
Description
Technical Field
The invention belongs to the field of fingerprint locks, and particularly relates to a high-integration system of a fingerprint lock.
Background
The existing fingerprint lock is overlarge in appearance, and mainly has the advantages that the required functions of the fingerprint lock are multiple, the internal structure is complex, and the appearance of the whole product is large. Especially, the function increase is that, needs inside increase spare part, the welding on the circuit board, and the mechanical structure of tool to lock has taken certain space in addition, leads to whole tool to lock volume too huge.
Disclosure of Invention
In order to overcome the defects pointed out by the prior art, the invention relates to a fingerprint lock with high integration, which is realized by the following scheme.
A high integration system of a fingerprint lock comprises an interface end, an MCU main control end and a fingerprint head end, and is characterized in that an MCU chip is integrated to the fingerprint head end and is positioned on the same circuit board, the MCU chip is connected with the fingerprint head through a UART interface or an SPI interface, and the MCU chip realizes an expansion function through a bus access port; the bus access port comprises a burning port, and the burning port is accessed to the MCU chip through a UART interface or an SWD interface and is used for realizing software upgrading.
Further, bus access port passes through VUSB and GPIO interface connection with the MCU chip, the GPIO interface is used for expanding the function, connection control motor, the module of charging, ADC module and RGB module.
Further, bus access port passes through VUSB and GPIO interface connection with the MCU chip, the GPIO interface is used for expanding the function, connection control motor, the module of charging, ADC module and RGB module.
Furthermore, the antenna is embedded at the bottom of the fingerprint head or the chip in an onboard mode; the design has the advantages that under the condition that the chip packaging material is used for incompletely isolating signals, the signal carrier of the antenna can be effectively and fully received; in addition, the static problem can be well isolated by utilizing material insulation.
Furthermore, the system also comprises an antenna, wherein the antenna is arranged on the circuit board in an onboard mode and embedded into the bottom of the fingerprint head or the chip.
The FEED end of the antenna is close to the edge of the circuit board, the GND end is located at the inner ring and close to the MCU chip, and the antenna is arranged on the back of the circuit board at intervals around the fingerprint head or the MCU chip.
The invention has the beneficial effects that: the structure is highly integrated, meanwhile, abnormal communication conditions of fingerprints and the MCU can be avoided, the communication distance is effectively increased, and function expansion is realized. The antenna is embedded at the bottom of the fingerprint head or the chip in an onboard mode; the design has the advantages that under the condition that the chip packaging material is used for incompletely isolating signals, the signal carrier of the antenna can be effectively and fully received; in addition, the static problem can be well isolated by utilizing material insulation.
Drawings
Fig. 1 is a block diagram of a system configuration in an embodiment of the present invention.
Fig. 2 is a schematic diagram of an MCU circuit in an embodiment of the present invention.
Figure 3 is a schematic diagram of a fingerprint module circuit in an embodiment of the invention.
Fig. 4 is a schematic diagram of an antenna structure according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an antenna combination state in the embodiment of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are only a part of the examples of the present invention, and these examples are only for explaining the present invention and do not limit the scope of the present invention.
As shown in fig. 1-3, a fingerprint lock highly integrated system includes an interface terminal, an MCU master control terminal and a fingerprint head terminal, wherein, an MCU/ara m chip is integrated into the fingerprint head terminal to implement functions through a bus access port; the burning port is led to the terminal to realize software upgrading without transition disassembly or replacement; meanwhile, the functions of interruption and GPIO are expanded.
The model of the MCU/ARAM chip is N32WB452, the N32WB452 series is a BLE5.0 MCU product specially developed for Internet of things equipment and intelligent products, a 32-bit ARM Cortex-M4 and 32-bit ARM Cortex-M0 double-core framework is adopted, and a 32-bit ARM Cortex-M0 core is specially used for processing a BLE5.0 radio frequency circuit and a Bluetooth protocol. Configuration is performed by the ARM Cortex-M4 core through an internal high speed bus. The ARM Cortex-M4 core is used as an application processor, supports floating point arithmetic unit (FPU) and Digital Signal Processing (DSP) instructions, supports parallel computing instructions and high working principle frequency of 144MHz, integrates up to 512KB encryption storage Flash and supports multi-user partition management. The N32WB452 series products provide wireless connection capability according with BLE5.0, and are suitable for various application occasions such as intelligent door locks, intelligent fingerprint identification and mobile interconnection.
The interface end is a bus access port, is positioned on the circuit board and is connected with pins of the MCU through a circuit, and the interface end is connected with the motor, the buzzer, the charging module and the like. And the MCU master control terminal is used for controlling the modules or the circuits.
The bus access port is connected to the MCU main control end through the single-ended signal VUSB interface and the single-ended signal GPIO interface, and is connected with the MCU main control end through the double-ended signal SWD/UART interface, the MCU main control end is connected with the bus access port through the bus access port, thereby control motor drive, buzzer control and in time interrupt.
The MCU chip is connected with the fingerprint head sensor through a double-end signal UART/SPI interface, and drives and controls the operation of the fingerprint head sensor.
The MCU main control end is also used for controlling the motor, the charging module, the ADC module and the RGB. The invention adopts 3 RGB lamps to prompt the operation of a user, and 3 RGB lamps are distributed at intervals according to a certain angle, thus the brightness and the operation are more intuitive.
The ADC module and the digital-to-analog converter are arranged at the interface end, so that other modules such as infrared, temperature or a timer and the like can be conveniently installed at the interface end, more modules can be expanded through the conversion function of analog signals and digital signals, and the function of the fingerprint lock is richer.
The motor is arranged in the fingerprint lock and used for unlocking or closing the motor, and after the fingerprint or other modes pass the verification, the MCU main control terminal controls the motor to unlock.
As shown in fig. 4, the antenna is embedded in the bottom of the fingerprint head or the chip in an onboard manner; the design has the advantages that under the condition that the chip packaging material is used for incompletely isolating signals, the signal carrier of the antenna can be effectively and fully received; in addition, the static problem can be well isolated by utilizing material insulation.
After the antenna is embedded in the fingerprint head or the bottom of the chip, the antenna is fixed on the circuit board by adopting an insulated packaging material through an SOC (system on chip) technology. When the antenna works, the antenna has no interference effect on the circuit board and has the function of isolating static electricity.
The antenna body adopts the mode of curve and serpentine combination, wholly is the C type, and one section is snakelike inverted-F antenna in the middle of the antenna body, and snakelike coupling length is the same with coupling distance, and both ends are the curve structure. The feeder of antenna is close to the circuit board edge, and the GND end is located the inner circle and is close to the MCU chip, and the antenna body sets up around fingerprint head or MCU chip at interval, and is located the circuit board back.
The fingerprint head end is a fingerprint acquisition module, and after fingerprint data is acquired, the fingerprint data is converted into a digital signal through an ADC (analog to digital converter) module and is sent to an MCU (micro control unit) module for verification, and a signal is sent to the motor if the verification is successful.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A high integration system of a fingerprint lock comprises an interface end, an MCU main control end and a fingerprint head end, and is characterized in that an MCU chip is integrated to the fingerprint head end and is positioned on the same circuit board, the MCU chip is connected with the fingerprint head through a UART interface or an SPI interface, and the MCU chip realizes an expansion function through a bus access port; the bus access port comprises a burning port, and the burning port is accessed to the MCU chip through a UART interface or an SWD interface and is used for realizing software upgrading.
2. The fingerprint lock high integration system of claim 1, further comprising an antenna, wherein the antenna is mounted on a circuit board and embedded in the bottom of the fingerprint head or the chip.
3. The fingerprint lock high integration system of claim 2, wherein the fed end of the antenna is close to the edge of the circuit board, the GND end is located at the inner circle and close to the MCU chip, and the antenna is arranged at the back of the circuit board at intervals around the fingerprint head or the MCU chip.
4. The fingerprint lock high integration system of claim 1, wherein the bus access port is connected with the MCU chip through VUSB and GPIO interface, the GPIO interface is used for expanding functions, connecting control motor, charging module, ADC module and RGB module.
5. The fingerprint lock high integration system of claim 1, further comprising a bluetooth module or a Wi-Fi module connected to the MCU master control side circuit for wireless communication with a smart device.
6. The fingerprint lock high integration system according to claim 1, further comprising an NFC module connected with the MCU master control side circuit, wherein the NFC module is used for close-range wireless communication with a smart device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984489.0A CN114005197A (en) | 2021-08-25 | 2021-08-25 | High integrated system of fingerprint lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984489.0A CN114005197A (en) | 2021-08-25 | 2021-08-25 | High integrated system of fingerprint lock |
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| Publication Number | Publication Date |
|---|---|
| CN114005197A true CN114005197A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110984489.0A Pending CN114005197A (en) | 2021-08-25 | 2021-08-25 | High integrated system of fingerprint lock |
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| Country | Link |
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| CN (1) | CN114005197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175498A (en) * | 2023-11-03 | 2023-12-05 | 深圳贝特莱电子科技股份有限公司 | Intelligent door lock fingerprint sensor protection circuit and method |
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| CN106950875A (en) * | 2017-03-17 | 2017-07-14 | 北京虹电科技有限公司 | A kind of embedded programming device and its fixture system |
| CN208456308U (en) * | 2018-05-30 | 2019-02-01 | 深圳市慧星辰科技有限公司 | Fingerprint Lock |
| CN209460839U (en) * | 2019-04-22 | 2019-10-01 | 成都费恩格尔微电子技术有限公司 | A kind of control assembly of fingerprint decoding coded lock |
| CN111090605A (en) * | 2019-10-10 | 2020-05-01 | 惠州市德赛西威汽车电子股份有限公司 | USB-UART (universal serial bus-to-universal asynchronous receiver transmitter) circuit for MCU (microprogrammed control unit) software upgrading |
| CN111127713A (en) * | 2019-12-26 | 2020-05-08 | 上海风祈智能技术有限公司 | Intelligent door lock control system and intelligent door lock formed by same |
| WO2021022978A1 (en) * | 2019-08-02 | 2021-02-11 | 深圳市岍丞技术有限公司 | Charging case for efficient and stable communication, and communication method for charging case |
-
2021
- 2021-08-25 CN CN202110984489.0A patent/CN114005197A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950875A (en) * | 2017-03-17 | 2017-07-14 | 北京虹电科技有限公司 | A kind of embedded programming device and its fixture system |
| CN208456308U (en) * | 2018-05-30 | 2019-02-01 | 深圳市慧星辰科技有限公司 | Fingerprint Lock |
| CN209460839U (en) * | 2019-04-22 | 2019-10-01 | 成都费恩格尔微电子技术有限公司 | A kind of control assembly of fingerprint decoding coded lock |
| WO2021022978A1 (en) * | 2019-08-02 | 2021-02-11 | 深圳市岍丞技术有限公司 | Charging case for efficient and stable communication, and communication method for charging case |
| CN111090605A (en) * | 2019-10-10 | 2020-05-01 | 惠州市德赛西威汽车电子股份有限公司 | USB-UART (universal serial bus-to-universal asynchronous receiver transmitter) circuit for MCU (microprogrammed control unit) software upgrading |
| CN111127713A (en) * | 2019-12-26 | 2020-05-08 | 上海风祈智能技术有限公司 | Intelligent door lock control system and intelligent door lock formed by same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117175498A (en) * | 2023-11-03 | 2023-12-05 | 深圳贝特莱电子科技股份有限公司 | Intelligent door lock fingerprint sensor protection circuit and method |
| CN117175498B (en) * | 2023-11-03 | 2024-03-22 | 深圳贝特莱电子科技股份有限公司 | Intelligent door lock fingerprint sensor protection circuit and method |
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