CN107909703A - A kind of smart lock based on NB IOT networks - Google Patents
A kind of smart lock based on NB IOT networks Download PDFInfo
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- CN107909703A CN107909703A CN201711367554.5A CN201711367554A CN107909703A CN 107909703 A CN107909703 A CN 107909703A CN 201711367554 A CN201711367554 A CN 201711367554A CN 107909703 A CN107909703 A CN 107909703A
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- smart lock
- lock according
- information
- iot
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Classifications
-
- 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
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0057—Feeding
- E05B2047/0058—Feeding by batteries
Abstract
The present invention provides a kind of smart lock based on NB IOT networks, including at least following module：Pass through the memory module of SPI FLASH quick storages；For connecting the NB IOT network modules of NB IOT networks；For reading the read module of RFID ID card informations；For inputting the numeric keypad input module of information；The locating module on ground is currently located for positioning；For showing the display module of information；For reporting the voice module of information；Motor drive module for power supply；For the MCU main control modules by connecting each module to carry out data transmission.The present invention is by the mutually coordinated cooperation of each module of smart lock and/or module, and it is convenient not only to unlock, and locking is reliable, easy to the management house of dispersiveness.
Description
Technical field
The present invention relates to technical field of electronic communication, more particularly to a kind of smart lock based on NB-IOT networks.
Background technology
Lock of the prior art is usually traditional mechanical lock assembled by machine components, it is disadvantageous in that：
As long as being unlocked using the mechanical lock key of size shape striking resemblances, its confidentiality and anti-theft are poor, are not suitable for using
In secrecy and the more demanding place of anti-theft performance, in addition, in the place of many of live and work needs lock, due to one
Key can only be driven a lock, so we need to carry with bunch of keys, also need to seek in bunch of keys when unlocking
One therein is looked for, use is very inconvenient.In addition, also IC card lock and magnetic card lock, although improving security, for scattered
The door lock IC card and magnetic card management of property are very inconvenient.
The content of the invention
The shortcomings that present invention is directed to existing way, proposes a kind of smart lock based on NB-IOT networks, existing to solve
The above problem existing for technology.
According to the first aspect of the invention, there is provided a kind of smart lock based on NB-IOT networks, includes at least：
Pass through the memory module of SPI FLASH quick storages；
For connecting the NB-IOT network modules of NB-IOT networks；
For reading the read module of RFID ID card informations；
For inputting the numeric keypad input module of information；
The locating module on ground is currently located for positioning；
For showing the display module of information；
For reporting the voice module of information；
Motor drive module for power supply；
For the MCU main control modules by connecting above-mentioned each module to carry out data transmission.
Further, the memory module uses serial FLASH to preserve location data, unlocking record and shut record.
Further, the numeric keypad input module connects MCU main control modules by I2C buses；
The numeric keypad input module includes at least an indicator light and a button.
Further, the voice module uses chips W TN4185.
Further, the motor drive module uses direct current generator driving chip, the direct current generator driving chip bag
Include auto-lock function.
Further, polymer battery is further included, the polymer battery power supply machine drive module driving is to be powered at
State NB-IOT network modules.
Further, voltage is down to 3.8V-4.0V by the polymer battery by the circuit of DCDC step-down switching power supplys
Power for NB-IOT network modules.
Further, the circuit of the polymer battery connection DCDC step-down switching power supplys is further included, the circuit is at least
Including wire jumper resistance.
Further, the MCU main control modules use the processing module of CU100-ID.
Further, the Card Reader distance 0-0.2cm of the processing module of the CU100-ID, card reading speed are no more than 1 second.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, by the mutually coordinated cooperation of each module of smart lock and/or module, it is convenient not only to unlock, and locking is reliable, is easy to
The management house of dispersiveness；
2nd, by SPI FLASH can quick storage unlock and shut information；
3rd, numerical ciphers are capable of providing by numeric keypad input module to provide the variation of unlocking, there is provided more easily
User experience；
4th, the correlation circumstance unlocked and shut can be reported in time by reporting the voice module of information, facilitate user to investigate dangerous situation；
5th, it is safer, more convenient to obtain key approach by connecting related platform for NB-IOT network modules.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is a kind of Intelligent lock structure figure based on NB-IOT networks in the embodiment of the present invention；
Fig. 2 is the MCU circuit diagrams in the embodiment of the present invention；
Fig. 3 is the NB-IOT network modules circuit diagrams in the embodiment of the present invention；
Fig. 4 is the serial FLASH circuit diagram in the embodiment of the present invention；
Fig. 5 is the RFID circuit figure in the embodiment of the present invention；
Fig. 6 is the chip circuit figure of the voice module in the embodiment of the present invention；
Fig. 7 is the direct current motor drive circuit figure in the embodiment of the present invention；
Fig. 8 is the circuit diagram of the power supply in the embodiment of the present invention；
Fig. 9 is the subprogram sectional drawing of the MCU in the embodiment of the present invention.
Embodiment
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention.
In some flows of description in description and claims of this specification and above-mentioned attached drawing, contain according to
Particular order occur multiple operations, but it should be clearly understood that these operation can not occur herein according to it is suitable
Sequence is performed or performed parallel, and the sequence number such as 101,102 etc. of operation, be only used for distinguishing each different operation, sequence number
Any execution sequence is not represented for itself.In addition, these flows can include more or fewer operations, and these operations can
To perform or perform parallel in order.It should be noted that the description such as " first " herein, " second ", is to be used to distinguish not
Message together, equipment, module etc., do not represent sequencing, it is different types also not limit " first " and " second ".
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of example of the present invention, is implemented instead of all the embodiments.It is based on
Embodiment in the present invention, the every other implementation that those skilled in the art are obtained without creative efforts
Example, belongs to the scope of protection of the invention.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), there is the meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, it should be understood that have with the context of the prior art
The consistent meaning of meaning, and unless by specific definitions as here, idealization or the implication of overly formal otherwise will not be used
To explain.
Embodiment
As shown in Figure 1, present embodiments providing a kind of smart lock based on NB-IOT networks, include at least：
Pass through the memory module of SPI FLASH quick storages；
SPI：Serial Peripheral Interface Serial Peripheral Interfaces, are that a kind of common clock is synchronous
Serial communication interface；External Flash has bus Flash, SPI Flash, bus Flash to need have outside on MCU by interface point
Bus interface, SPI Flash are exactly that flash is written and read by SPI mouthfuls.Here is SPI FLASH subprograms：
#include<stm32f10x.h>
#include"PPP_SysInit.h"
#include"delay.h"
#include"usart.h"
#define Status_Register_Opcode 0xD7
#define Device_ID_Opcode 0x9F
#define SPI_CS_1\
{\
delay_us(2)；\
GPIO_SetBits(GPIOA,GPIO_Pin_4)；\
delay_us(2)；\
}\
while(0)；\
#define SPI_CS_0\
{\
delay_us(2)；\
GPIO_ResetBits(GPIOA,GPIO_Pin_4)；\
delay_us(2)；\
}\
while(0)；\
#define SPI_SCK_1GPIO_SetBits(GPIOA,GPIO_Pin_5)
#define SPI_SCK_0GPIO_ResetBits(GPIOA,GPIO_Pin_5)
#define SPI_SI_1GPIO_SetBits(GPIOA,GPIO_Pin_7)
#define SPI_SI_0GPIO_ResetBits(GPIOA,GPIO_Pin_7)
#define SPI_SO GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)
#define SPI_RES_1GPIO_SetBits(GPIOC,GPIO_Pin_4)
#define SPI_WP_1GPIO_SetBits(GPIOC,GPIO_Pin_5)
For connecting the NB-IOT network modules of NB-IOT networks；NB-IOT network modules connect MCU by UART interface
Main control module；
NB-IOT focuses on low-power consumption and extensively covers (LPWA) Internet of Things (IOT) market, is that one kind can be wide in the world
The emerging technology of general application.It has the characteristics that covering is wide, connection is more, speed is low, cost is low, low in energy consumption, framework is excellent etc..NB-IOT
Using License frequency ranges, it can take in band, three kinds of deployment way of protection band or Independent Carrier Wave, be coexisted with existing network.
NB-IOT possesses four characteristics：First, extensively cover, it will thus provide improved in-door covering, under same frequency range, NB-
IOT is than existing network gain 20dB, equivalent to the ability for improving 100 times of overlay areas；Second, possesses support magnanimity connection
Ability, mono- sector of NB-IOT can support 100,000 connections, support low latency sensitivity, ultralow equipment cost, low set
Standby power consumption and the network architecture of optimization；Third, more low-power consumption, the stand-by time of NB-IOT terminal modules is 10 years；Fourth, more
Low module cost, single successive module expected from enterprise are no more than 5 dollars.
For reading the read module of RFID ID card informations；Read module connects MCU main control modules by SPI interface；
RFID (radio frequency identifications：Radio frequency identification) it is a kind of contactless automatic identification
Technology, it is by radiofrequency signal automatic identification destination object and obtains related data, and identification work is without manual intervention, as bar
The wireless version of shape code, RFID technique have waterproof, antimagnetic, high temperature resistant, service life not available for bar code are long, read away from
The advantages that being encrypted from data on big, label, storing data capacity bigger, the change of storage information freely, its application will give zero
Sell, revolutionary variation is carried out in the industrial zone such as logistics.It is a kind of communication technology, specific objective can be identified by radio signals and is read and write
Related data, without establishing mechanical or optical contact between identifying system and specific objective.
The basic functional principle of RFID (radio frequency identification) technology is simultaneously uncomplicated：Label into
After entering magnetic field, the radiofrequency signal that plug-in reader is sent is received, the energy obtained by sensing electric current sends out storage in the chips
Product information (Passive Tag, passive label or passive tag), or actively send the signal (Active of a certain frequency
Tag, active label or active tag)；After plug-in reader reads information and decodes, send to Central Information System and carry out at related data
Reason.
The RFID system of complete set, is by reader (Reader) and the namely so-called response of electronic tag (TAG)
Three parts of device (transponder) and application software system are formed, its operation principle is that Reader launches a specific frequency
Radio wave energy to Transponder, to drive Transponder circuits to send out internal data, at this time
Reader just received in sequence unscrambling datas, give application program and do corresponding processing.
Generally it is segmented into from the point of view of in a manner of communication and energy-sensitive between RFID card piece reader and electronic tag,
Sensing coupling (Inductive Coupling) and back scattering coupling two kinds of (Backscatter Coupling), general low frequency
RFID mostly use the first formula, and higher-frequency uses the second way mostly.
Reader can be reading or read/write device according to the structure used and technology difference, be the control of RFID system information
And processing center.Reader is usually made of coupling module, transceiver module, control module and interface unit.Reader and response
It is general between device that information exchange is carried out using half-duplex operation mode, while reader provides energy by being coupled to passive balise
Amount and sequential.In practical applications, collection of the realization such as Ethernet or WLAN to object identification information, place can further be passed through
The management function such as reason and teletransmission.Transponder is the information carrier of RFID system, and transponder is by coupling element mostly at present
(coil, microstrip antenna etc.) and microchip form parasitic element.
RFID is the abbreviation of Radio Frequency Identification, i.e. radio frequency identification.Frequently referred to induction type electricity
Sub- chip or proximity card, contactless card, non-contact card, electronic tag, electronic bar code etc..Complete set RFID system by Reader with
Transponder two is partly formed, its operating principle is that the unlimited radio wave energy for launching a specific frequency by Reader is given
Transponder, to drive Transponder circuits to send out the ID Code in Inner portions, Reader just receives this ID at this time
Code.Special the characteristics of being to exempt from polymer battery, contact-free and exempt to swipe the card of Transponder, therefore be not afraid of dirty and brilliant
Piece password can not uniquely replicate for the world, the safe, long-life.The application of RFID is very extensive, and typical case has at present
Thing chip, automobile chip Fang Pirates devices, gate inhibition's control, parking lot control, production line automation, handling of goods and materials.RFID tag has two
Kind：Active label and passive label.And China second-generation identity card is exactly the RFID technique for employing 13.56MHz as its Kernel Technology.
For inputting the numeric keypad input module of information；
Specifically, numeric keypad input module connects MCU main control modules by I2C buses；
I2C buses are a kind of simple, the bidirectional two-line synchronous serial bus developed by Philips companies.It is only needed
Both threads can transmit information between the device being connected in bus.
Main device (MCU main control modules) is used to start bus transmissioning data, and produces clock to open the device of transmission, this
When any device being addressed to be regarded as in bus advocating peace from, hair and the relation received from device be not constant, and take
Certainly in data transmission direction at this time.If host will be sent data to from device, host is addressed from device, then active first
Send data to from device, data transmission is finally terminated by host；If host will receive the data from device, first by main device
Part addressing receives the data sent from device from device and then host, finally terminates receive process by host.In such case
Lower hosts are responsible for producing timer clock and terminate data transmission.
Numeric keypad input module includes at least an indicator light and a button；
The locating module on ground is currently located for positioning；Mainly use GPS positioning.Using GPS positioning satellite, in the whole world
In the range of the system that is positioned, navigated in real time, be known as GPS, abbreviation GPS.GPS is by U.S. Department of Defense
Developing the one kind established has comprehensive, round-the-clock, all the period of time, high-precision satellite navigation system, can be provided for Global Subscriber
The navigation informations such as low cost, high accuracy three-dimensional position, speed and accurate timing, are communication technology of satellite answering in navigation field
With model, it drastically increases the level of IT application of Terre des Hommes's meeting, has effectively promoted the development of digital economy.
For showing the display module of information；The display module can use OLED display screen to show relevant information, and pass through
I2C buses connect MCU main control modules；
OLED display screen is to utilize display screen made of organic electroluminescent LED.It is organic due to being provided simultaneously with self-luminous
Electric exciting light-emitting diode, be not required to backlight, contrast are high, thickness is thin, visual angle is wide, reaction speed is fast, available for flexibility panel,
The excellent characteristics such as use temperature range is wide, construction and processing procedure are simpler, it is considered to be follow-on flat-panel screens is emerging should
Use technology.
For reporting the voice module of information；
Motor drive module for power supply；
For the MCU main control modules by connecting each module to carry out data transmission.
Such as the circuit diagram that Fig. 2 is MCU main control modules, MCU main control modules mainly drive polymer by motor drive module
The voltage that battery provides VDD3.3 is run for MCU main control modules；Fig. 9 is the subprogram figure of MCU main control modules.
As shown in figure 3, MCU main control modules use the processing module of CU100-ID, CU100-ID specifically refers to two generation identity
Card/Mifare card sequence number card reading modules, main feature are as follows：
1st, resident's China second-generation identity card physics card number (sequence number) and TYPE Type B card physics sequences can be read in identity card card reading module
Row number, but the information such as the name in China second-generation identity card card, identification card number, native place, address, photo cannot be read；
2nd, communication interface is UART；
3rd, antenna one, plug and play (can also sense)；
4th, built in hardware house dog, prevents to crash；
5th, output control：With 1 auxiliary output, the peripheral hardwares such as LED or buzzer can be controlled；
6th, traffic rate：19200bps；
7th, working frequency：13.56MHz.
Specifically, the Card Reader distance 0-0.2cm of the processing module of CU100-ID, card reading speed is no more than 1 second.CU100-ID
It is the chip with " voltage regulation filtering ", is exactly stabilized power source in simple terms, the charging/discharging function of capacitance is equivalent to one
Buffering alleviates impact of the voltage suddenly change to circuit；Voltage regulation filtering function is outside communication control module (communication board) never accesses
The electric current of 30mA in the case of portion's equipment, is reduced to 5uA；No. 5 dry cells of 6 section are allowed to disclosure satisfy that smart lock uses 6 months；Together
When optimize to locking with being done in the connection strategy of platform, control lock is connected without long, in the case of module sleep, is unidirectionally called out
Wake up is to control to wake up NB-IOT modules by MCU.
If Fig. 4 is NB-IOT network modules circuit diagrams, NB-IOT network modules are after the platform key being connected is obtained, hair
Go out intelligent control instruction to unlock and shut to control.
As shown in figure 5, memory module uses serial FLASH to preserve location data, unlocking record and shut record.
Serial Flash is that the small size of continuous data access is carried out with serial line interface, the flash memory of low-power consumption.String
Row flash transmits data with less line than parallel flash from system.For the few serial flash of number of pins it
Advantage be the reduction of the space of system board, power consumption and cost.For capacity 512Kbit to 16Mbit 25 sequential series
For flash, it has SPI and with the pins of industrial standard SPI serial EEPROM devices to pin hardware compatibility.45 series tools
There are the 4 line serial line interfaces with hardware reset pin.Two kinds of series all provide two kinds of encapsulation, the SOIC of 8 pins and 8 contacts
WSON.Key character is as follows：
Small size
Operate voltage：Single 2.7-3.6V or 3.0-3.6V read and write operation
4 line serial interface structurals
The feature of one byte of continuous read operation
Low-power consumption
--- 25 series：7mA (typical case), it is standby：8uA (typical case)
--- 45 series：10mA (typical case), it is standby：12uA (typical case)
Flexible erasing ability
--- 25 series：4KByte unifies Sector-Erase, 32Kbyte Block-Erase or Chip-Erase energy
Power
--- 45 series：4Kbyte unifies Sector-Erase or Chip-Erase abilities
Quick erasing：Sector-Erase or Block-Erase：18ms (typical case)
Byte programs：14us (typical case)
Maximum operational clock frequency：
--- 25 series：33 and 20MHZ
--- 45 series：10MHZ
There is automatic address to add up (AAI) programming (being served only for 25 series) for quick calculating
Reset input pin and interrupt internal state machine and reset device to reading mode (it is serial to be only applicable to 45)
Pass through the hardware writing protection of WP# pins
As shown in fig. 6, voice module uses chips W TN4185.
The octal small size of WTN4185, capacity is big, almost the various voice places for being related to low cost and not changing voice content
It can be selected；With the characteristics of super low-power consumption, tonequality is fine and smooth, cost performance highest, and price WTN series is minimum；Operating voltage is
2.8V~5.2V；Under standby mode, quiescent current is less than 5uA.Accurately +/- 1% inside concussion, there is low voltage resetting (LVR=
1.8V) house dog timing, I/O reset functions；PWM pure audios export, and can directly drive 8 Ω/0.5W loudspeaker and buzzer, DAC
Audio output, can external power amplifier.Built-in house dog.Possesses serial ports control model：One line serial ports, two line serial ports (can at most add
Carry 224 sections of voices).Support BUSY state output functions.
Shown in Fig. 7, motor drive module uses direct current generator driving chip, and direct current generator driving chip includes self-locking work(
Energy.The characteristics of direct current generator driving chip, is as follows：
(1) energy saving (Power Save) function, can be with control chip in quiescent operation, in shut-off by PS control signals
Portion's circuit, makes chip be in Standby states.
(2) defencive function, chip internal are equipped with overheat protector (TSD:Thermal Shut Down), under-voltage protection
(UVLO:Under Voltage Lockout) circuit protection function, chip breaking circuit when there is the above situation can be made,
So as to reach the function of protection chip.
(3) during chip application, in fact it could happen that instantaneous large-current burns motor or IC.To prevent that portion is set the situation in the chip
There is overcurrent protection (OCP:Over Current Protect) circuit module.When there is high current, chip output is closed immediately
It is disconnected.Recover normal operating conditions when re-powering next time.
(4) chip internal is using low imbalance operational amplifier (Low Offset OPAMP).
The operation principle of direct current generator driving chip mainly produces one and supply voltage and temperature by band-gap reference
Unrelated voltage reference, by producing a 0.6V voltages after voltage-stablizer.Current protecting circuit (OCP) passes through to output power pipe
Sample rate current, is then converted into 0.6V comparing after voltage, achievees the purpose that to detect high current.
As shown in figure 8, polymer battery, through DCDC step-down switching power supplys, it is NB-IOT that 6V voltages are down to 3.8V-4.0V
Network modules are powered.
DC-DC refers to the electric energy that the electric energy of a magnitude of voltage is changed into another magnitude of voltage in DC circuit, mainly
The ratio of output voltage and input voltage is controlled by opening with shut-off for controlling switch pipe.The ON time of switching tube accounts for conducting
Ratio with turning off whole cycle is known as conducting dutycycle, and Switching Power Supply is exactly to examine to adjust duty cycle to adjust output voltage.Control
The signal of switching tube processed is known as PWM ripples, can be produced by chip or microcontroller.
Switching Power Supply is to utilize modern power electronics technology, the time ratio that controlling switch pipe turns on and off, and remains steady
Determine a kind of power supply of output voltage, Switching Power Supply is generally made of pulse width modulation (PWM) control IC and MOSFET.With electricity
The development and innovation of power electronic technology so that switch power technology is also innovated constantly.At present, Switching Power Supply is with small-sized, light
Amount and efficient feature are widely used almost all of electronic equipment, are that current electronics and information industry rapid development is indispensable
A kind of few power mode.
The core of direct-current switch power supply is DC/DC converters.Therefore the classification of direct-current switch power supply is to rely on DC/DC conversions
Device classification.That is, the classification of direct-current switch power supply and the classification of DC/DC converters are essentially identical, DC/DC conversions
The classification of device is basically the classification of direct-current switch power supply.
Further, the circuit of polymer battery connection DCDC step-down switching power supplys includes at least wire jumper resistance.Wire jumper electricity
The function of resistance is as follows：
1st, in circuit without any function, simply on PCB in order to debug the reasons such as convenient or compatible design；
2nd, wire jumper use can be done, if certain section of circuit does not have to, not pasting the resistance directly (can not influence appearance)；
3rd, when match circuit Parameter uncertainties, with 0 ohm of replacement, when actual debugging, parameter is determined, then with
The element of concrete numerical value replaces；
4th, when wanting to survey the power consumption stream of certain partial circuit, 0ohm resistance can be removed, connect ammeter, it is so convenient to survey
Power consumption stream.
5th, in wiring, if tangible cloth is not pass by, the resistance in 0 Europe can also be added；
6th, under high-frequency signal, inductance or capacitance are served as.(related with external circuit characteristic) inductance is used, and is mainly solved
EMC (electromagnetic compatibility) problem；As with, between power supply and IC Pin.
Further, polymer battery is further included, polymer battery power supply machine drive module is driven to be powered at NB-IOT
Network modules.
Polymer battery, also known as lithium polymer battery (Li-polymer), also known as macromolecule lithium polymer battery, it is lithium
One kind of ion polymer cell, but have compared with liquid lithium polymer battery (Li-ion) energy density is high, smallerization,
A variety of clear superiorities such as ultrathin, lightweight, and high security, are a kind of new polymers batteries.In shape, lithium polymerize
Thing battery has ultrathin feature, can coordinate the needs of various products, is fabricated to the polymer battery of any shape and capacity.
The minimum thickness that such polymer battery can reach is up to 0.5mm.Its nominal voltage is also nominal electricity as Li-ion
3.7V is pressed, without memory effect.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of module and related work unit, may be referred to the corresponding process in preceding method embodiment, herein no longer
Repeat.
In embodiment provided herein, it should be understood that disclosed method and system or device or module or
Unit, can realize by another way.For example, the division of the module, is only a kind of division of logic function, it is actual real
There can be other dividing mode now, such as multiple module or components can combine or be desirably integrated into another system,
Or some features can be ignored, or do not perform.The unit illustrated as separating component may or may not be thing
It is separated in reason, it may or may not be physical location as the component that unit is shown, you can with positioned at a place,
Or it can also be distributed in multiple network unit.Some or all of unit therein can be selected according to the actual needs
Realize the purpose of this embodiment scheme.
The above is only some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of smart lock based on NB-IOT networks, it is characterised in that include at least：
Pass through the memory module of SPI FLASH quick storages；
For connecting the NB-IOT network modules of NB-IOT networks；
For reading the read module of RFID ID card informations；
For inputting the numeric keypad input module of information；
The locating module on ground is currently located for positioning；
For showing the display module of information；
For reporting the voice module of information；
Motor drive module for power supply；
For the MCU main control modules by connecting above-mentioned each module to carry out data transmission.
2. smart lock according to claim 1, it is characterised in that it is fixed to preserve that the memory module uses serial FLASH
Position data, unlocking records and shuts record.
3. smart lock according to claim 1, it is characterised in that the numeric keypad input module is connected by I2C buses
Connect MCU main control modules；
The numeric keypad input module includes at least an indicator light and a button.
4. smart lock according to claim 1, it is characterised in that the voice module uses chips W TN4185.
5. smart lock according to claim 1, it is characterised in that the motor drive module is using direct current generator driving core
Piece, the direct current generator driving chip include auto-lock function.
6. smart lock according to claim 1, it is characterised in that further include polymer battery, the polymer battery supplies
Motor drive module is driven to be powered at the NB-IOT network modules.
7. smart lock according to claim 6, it is characterised in that the polymer battery passes through DCDC step-down switching power supplys
Voltage is down to 3.8V-4.0V to power for NB-IOT network modules.
8. smart lock according to claim 7, it is characterised in that the polymer battery connection DCDC step-down switching electricity
Source, the DCDC step-down switching power supplys include at least wire jumper resistance.
9. smart lock according to claim 1, it is characterised in that the MCU main control modules use the processing of CU100-ID
Module.
10. smart lock according to claim 9, it is characterised in that the Card Reader distance of the processing module of the CU100-ID
For 0-0.2cm, card reading speed is no more than 1 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711367554.5A CN107909703A (en) | 2017-12-18 | 2017-12-18 | A kind of smart lock based on NB IOT networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711367554.5A CN107909703A (en) | 2017-12-18 | 2017-12-18 | A kind of smart lock based on NB IOT networks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107909703A true CN107909703A (en) | 2018-04-13 |
Family
ID=61869210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711367554.5A Pending CN107909703A (en) | 2017-12-18 | 2017-12-18 | A kind of smart lock based on NB IOT networks |
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| Country | Link |
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| CN (1) | CN107909703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190868A (en) * | 2019-05-28 | 2019-08-30 | 高新兴物联科技有限公司 | Wake-up circuit and IoT device |
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| CN204131557U (en) * | 2014-07-07 | 2015-01-28 | 深圳市趋势伟业科技有限公司 | Cloud storage security is locked |
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