CN108494414A - Super low-power consumption multimode Internet of Things wireless module - Google Patents
Super low-power consumption multimode Internet of Things wireless module Download PDFInfo
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- CN108494414A CN108494414A CN201810443065.1A CN201810443065A CN108494414A CN 108494414 A CN108494414 A CN 108494414A CN 201810443065 A CN201810443065 A CN 201810443065A CN 108494414 A CN108494414 A CN 108494414A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses super low-power consumption multimode Internet of Things wireless module, GPRS module is connect by UART with MCU control unit, and MCU control unit is instructed by AT or the instruction set of GPRS module controls GPRS module, the interaction of order or data；MCU control unit all passes through GPIO for the powered-down of GPRS module, shutdown and suspend mode；LORA modules are connect by UART with MCU control unit, and MCU control unit is instructed by AT or controlled LORA modules according to the support command table of LORA modules, the interaction of order or data；NB IOT modules are connect by UART or IIC with MCU control unit；EMTC modules are connect by pcm interface and SPI interface with MCU control unit；Sigfox modules are connect by UART with MCU control unit.The present invention forms the Internet of Things module of multimode, can meet various application scenarios.
Description
Technical field
The present invention relates to Internet of Things field.It is more particularly related to which a kind of super low-power consumption multimode Internet of Things is wireless
Module.
Background technology
The networking mode of internet of things is largely Star network or ad hoc network, and usual node is by sensor or terminal+wireless
Transmission module forms, and the core of networking is to connect with gateway or access point by wireless transport module, by gateway or
Access point is connected into server or ad hoc network mode.The Internet of Things module of mainstream on the market is largely single-mode at present
LORA either NB-IOT or GPRS module.LORA modules generally access the private network of LORAWAN networks either LORA compositions, but
The disadvantage is that gateway and server use must be redeployed.
Invention content
The object of the present invention is to provide super low-power consumption multimode Internet of Things wireless module, form the Internet of Things module of multimode,
Various application scenarios can be met.
In order to realize these purposes and other advantages according to the present invention, the wireless mould of super low-power consumption multimode Internet of Things is provided
Block, including：MCU control unit, GPRS module, NB-IOT modules, EMTC modules, LORA modules and Sigfox modules；
Wherein, GPRS module is connect by UART with the MCU control unit, and the MCU control unit is instructed by AT
Or the instruction set of GPRS module controls the GPRS module, the interaction of order or data；MCU control unit is for GPRS
The powered-down of module, shutdown and suspend mode all pass through GPIO；
LORA modules are connect by UART with the MCU control unit, the MCU control unit by AT instruct or according to
The support command table of LORA modules controls the LORA modules, the interaction of order or data；
NB-IOT modules are connect by UART or IIC with the MCU control unit；
EMTC modules are connect by pcm interface and SPI interface with the MCU control unit；
Sigfox modules are connect by UART with the MCU control unit.
Preferably, further include SIM card and buffer switch；The SIM card passes through SIM buses and the buffer switch
Connection, and the EMTC modules, GPRS module, NB-IOT modules are connect with the buffer switch, the MCU control unit
The buffer switch is controlled to be connected to EMTC modules, GPRS module, any module switching in the block of NB-IOT moulds.
Preferably, further include：First antenna and the first RF switch；The first antenna and first RF switch
Connection, and the EMTC modules, GPRS module, NB-IOT modules are connect with first RF switch, first radio frequency
Switch is set as four into one and goes out, and the MCU control unit controls first RF switch and EMTC modules, GPRS module, NB-
Any module switching connection in the block of IOT moulds.
Preferably, the frequency range of the first antenna is 800-1000MHz frequency ranges.
Preferably, when the LORA modules, Sigfox modules use high band, the high band is 800-
1000MHz, the LORA modules, Sigfox modules are connect by microstrip line or coaxial cable with first RF switch, institute
State MCU control unit control first RF switch and EMTC modules, GPRS module, NB-IOT modules, LORA modules,
Any module switching connection in the block of Sigfox moulds.
Preferably, when the LORA modules, Sigfox modules use low-frequency range, the low-frequency range is 429-
510MHz further includes the second antenna and the second RF switch；
Second RF switch is connected with first RF switch, and the LORA modules, Sigfox modules are and institute
The connection of the second RF switch is stated, second antenna connects second RF switch, and second RF switch is set as two
Go out into two.
Preferably, the interface unit of MCU control unit includes：SPI interface, GPIO interface, UART interface, I2C interface,
USB interface.
The present invention includes at least following advantageous effect：The present invention using a kind of novel hardware structure LORA, NB-IOT,
Several standards of EMTC, GPRS combine, and form the Internet of Things module of multimode, can meet various application scenarios, adaptive various
Network formats, and smooth evolution supports following application demand.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the connection diagram according to super low-power consumption multimode Internet of Things wireless module of the present invention；
Fig. 2 is the connection diagram between SIM card according to an embodiment of the invention and buffer and modules；
Fig. 3 is the connection relationship diagram of antenna according to an embodiment of the invention.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
As shown in Figures 1 to 3, super low-power consumption multimode Internet of Things wireless module provided by the invention, including：MCU control unit,
GPRS module, NB-IOT modules, EMTC modules, LORA modules and Sigfox modules；
Wherein, GPRS module is connect by UART with the MCU control unit, and the MCU control unit is instructed by AT
Or the instruction set of GPRS module controls the GPRS module, the interaction of order or data；MCU control unit is for GPRS
The powered-down of module, shutdown and suspend mode all pass through GPIO；
LORA modules are connect by UART with the MCU control unit, the MCU control unit by AT instruct or according to
The support command table of LORA modules controls the LORA modules, the interaction of order or data；
NB-IOT modules are connect by UART or IIC with the MCU control unit；
EMTC modules are connect by pcm interface and SPI interface with the MCU control unit；
Sigfox modules are connect by UART with the MCU control unit.
In the above-mentioned technical solutions, master controller of the MCU control unit as entire module manages and controls entire module
Working condition, and the data between switching sensors and wireless module, external interface SPI or GPIO or UART or
The through-holes such as I2C or USB or the modes such as stamp hole or connector or patch pad, connect the sensor or data-interface of client.
In the most of the time that no data are sent or are received, entire module is by MCU control others GPRS, LORA, EMTC and NB-
IOT modules make them all enter standby suspend mode or shutdown mode, and specific each module status depends on the network feelings that client uses
Condition determines, the current supply circuit of the module, other NB- that can be used can be completely closed if not using EMTC and GPRS module completely
IOT modules or LORA modules are then in standby dormant state, when sending or receiving if any data, can by MCU control unit with
GPIO signals between the module wake up the module, then (parallel input signal are changed into the core of serial output signal by UART
Piece) according to certain baud rate and wireless module progress data transmit-receive.Communication protocol can be AT instructions either module branch
The particular, instruction set held.MCU is only by one group of UART interface together with each block coupled in series, so same period only one module
It is communicated with MCU, some modules need SIM card to support, such as GPRS, NB-IOT and EMTC, then sim card slot is needed to several moulds
Block shares, and controls digital switch by MCU which module and SIM card unicom selected.Antenna connection is also controlled by main control MCU
System, entire module at least need two antenna openings, an antenna realized in high frequency 800-1000MHz frequency ranges, another realization
The antenna of 470MHz frequency ranges connects, and is switched according to specifically used standard or frequency range situation.
GPRS module is the data pattern as 2.5G networks, has compact, of low cost, power consumption is relative to other
Much smaller for 3G or 4G standards, shutdown power consumption is only 0.13mA, and electric current reaches 300mA or so when transceiving data, is less than
The half of 3G or 4G.Module is connected by UART (asynchronous receiving-transmitting transmitter) with main MCU, and main control MCU is instructed by AT or GPRS
The instruction set of module controlled therewith, the interaction of order or data.MCU for GPRS module it is powered-down, shutdown and suspend mode all
It is completed, is determined on a case-by-case basis by GPIO.Such as powered-down to realize by closing GPRS module power supply, then GPRS module consumes
Electricity can be within several uA, only Iq electric currents of power supply.Antenna port matches 50 Ω corresponding band antennas, 900M or 1800M
Frequency range.
LORA Internet of Things is either private network can also be general LORAWAN networks, the specific needs for regarding client
And select corresponding protocol module or software configuration version.In addition the module, which also has, configures I/O interface, as configuration feature and calls out
Module of waking up uses.The stand-by power consumption of LORA modules is extremely low, within usually only 3uA.LORA working frequency range is domestic usually in sub1G
Common 433MHz, 470MHz-510MHz, 780MHz frequency range, needs according to the corresponding antenna of corresponding frequency band match.
NB-IOT modules are all built-in agreement and radio circuit, and outside is gone out with 50 Europe antennal interfaces, data interface protocol
It is UART or IIC etc., there is standby, shutdown isotype.
EMTC modules, occupied bandwidth 1.4Mbps support that phonetic function, the module include pcm interface, can transmit VoIP languages
Sound.Can be connected with PCM between the module and MCU, the unified speech interface by MCU interfaces to user, or by SPI or
USB.Other interfaces of link block read the data of client's sensor, pass through GPRS or LORA or EMTC or NB-IOT moulds
Block is dealt into corresponding network.
Sigfox modules can use the mature modules product of Sigfox module manufacturers, can also use list SOC Sigfox
Chip, such as the product of the chip-scale of NXP or Onsemi companies.Usual these built-in chip types Sigfox protocol libraries and
Transceiver.It is typically to connect main control MCU with by UART buses if with Sigfox finished product modules；If it is with SOC
Chip is then to use spi or UART connection main control MCUs, and for the resource consumption of master control, the two is substantially similar.
The physical layer and link layer protocol of Sigfox is also all included in module or SOC chip, and main control MCU turns as just data
Channel is sent out to use.
Further include SIM card and buffer switch in another technical solution；The SIM card by SIM buses with it is described
Buffer switch connects, and the EMTC modules, GPRS module, NB-IOT modules are connect with the buffer switch, described
MCU control unit controls the buffer switch and connects with EMTC modules, GPRS module, any module switching in the block of NB-IOT moulds
It is logical.When client will use GPRS module, there are one user interface, the application apparatus or biography of client to client for MCU control unit
Sensor can send instructions to user interface, and MCU control unit controls corresponding module and opens, and control sim cards and connect with respective modules
It connects.
In the above-mentioned technical solutions, SIM card connect, tri- kinds of system modules of NB-IOT, EMTC and GPRS simultaneously only use first,
Therefore three modules can be shared using SIM card, be connected by buffer, and switch ways switching is realized by main control MCU.SIM card
It can be eSIM chips or SIM card, specifically be determined by user.Other two kinds of standards LORA and Sigfox do not need SIM card then,
Its module can the built-in ID number, legal ID is obtained when being produced by module.The shared SIM card mode maximum can save plate suqare.
In another technical solution, further include：First antenna and the first RF switch；The first antenna and described the
One RF switch connects, and the EMTC modules, GPRS module, NB-IOT modules are connect with first RF switch, institute
State the first RF switch and be set as four into one and, the MCU control unit control first RF switch and EMTC modules,
Any module switching connection in the block of GPRS module, NB-IOT moulds.
Four into one go out and refer to, while only there are one going out to be connected into one, specifically which connection is controlled by MCU
Unit goes to control by GPIO.
In the above-mentioned technical solutions, it is 800-1000MHz frequency ranges that GPRS, NB-IOT, EMTC frequency range are now widely used,
So can utilize the existing band antenna is unified to use according to the characteristics of this frequency range, only with the frequency range RF switch
3 to 1 switching can be realized, the same control is realized by main control MCU.If LORA and Sigfox are with 868 or 915MHz frequencies
Section, then the same 800-1000MHz shared with GPRS, NB-IOT, EMTC can also be connected into microstrip line or coaxial cable
Band antenna, then the switch of the antenna needs to realize 4 to 1 handoff functionality.If LORA and Sigfox use 470 frequency ranges
Module, because 1G or less frequency ranges are relatively difficult to realize the antenna of 470-1GHz frequency ranges, refers to then antenna just must be separated independently
Fig. 3.
In another technical solution, the frequency range of the first antenna is 800-1000MHz frequency ranges.
In another technical solution, when the LORA modules, Sigfox modules use high band, the high band is
800-1000MHz, the LORA modules, Sigfox modules are connected by microstrip line or coaxial cable with first RF switch
It connects, the MCU control unit controls first RF switch and EMTC modules, GPRS module, NB-IOT modules, LORA moulds
Any module switching connection in the block of block, Sigfox moulds.
In another technical solution, when the LORA modules, Sigfox modules use low-frequency range, the low-frequency range is
429-510MHz further includes the second antenna and the second RF switch；
Second RF switch is connected with first RF switch, and the LORA modules, Sigfox modules are and institute
The connection of the second RF switch is stated, second antenna connects second RF switch, and second RF switch is set as two
Go out into two.
Two into two go out and refer to, while Sigfox modules are connected with the arbitrary channel gone out all the way, but are all 1:1 relationship,
Such as LORA modules can also be connected with the second antenna, LORA modules can also connect with another output channel, Sigfox moulds
Block can also be connected with the second antenna, and Sigfox modules can also connect with another output channel, these four situations are each only
There is a kind of situation,
In another technical solution, the interface unit of MCU control unit includes：SPI interface, GPIO interface, UART connect
Mouth, I2C interface, USB interface.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (7)
1. super low-power consumption multimode Internet of Things wireless module, which is characterized in that including：MCU control unit, GPRS module, NB-IOT
Module, EMTC modules, LORA modules and Sigfox modules；
Wherein, GPRS module is connect by UART with the MCU control unit, the MCU control unit by AT instruct or
The instruction set of GPRS module controls the GPRS module, the interaction of order or data；MCU control unit is for GPRS moulds
The powered-down of block, shutdown and suspend mode all pass through GPIO；
LORA modules are connect by UART with the MCU control unit, and the MCU control unit is instructed by AT or according to LORA
The support command table of module controls the LORA modules, the interaction of order or data；
NB-IOT modules are connect by UART or IIC with the MCU control unit；
EMTC modules are connect by pcm interface and SPI interface with the MCU control unit；
Sigfox modules are connect by UART with the MCU control unit.
2. super low-power consumption multimode Internet of Things wireless module as described in claim 1, which is characterized in that further include that SIM card is gentle
Rush device switch；The SIM card is connect by SIM buses with the buffer switch, and the EMTC modules, GPRS module, NB-
IOT modules are connect with the buffer switch, the MCU control unit control the buffer switch and EMTC modules,
Any module switching connection in the block of GPRS module, NB-IOT moulds.
3. super low-power consumption multimode Internet of Things wireless module as described in claim 1, which is characterized in that further include：First antenna
With the first RF switch；The first antenna is connect with first RF switch, and the EMTC modules, GPRS module, NB-
IOT modules are connect with first RF switch, and first RF switch is set as four into one and goes out, and the MCU controls are single
Member controls first RF switch and is connected to EMTC modules, GPRS module, any module switching in the block of NB-IOT moulds.
4. super low-power consumption multimode Internet of Things wireless module as claimed in claim 3, which is characterized in that the frequency of the first antenna
Section is 800-1000MHz frequency ranges.
5. super low-power consumption multimode Internet of Things wireless module as claimed in claim 4, which is characterized in that when the LORA modules,
When Sigfox modules use high band, the high band is 800-1000MHz, and the LORA modules, Sigfox modules pass through micro-
Band line or coaxial cable connects with first RF switch, MCU control unit control first RF switch and
Any module switching connection in the block of EMTC modules, GPRS module, NB-IOT modules, LORA modules, Sigfox moulds.
6. super low-power consumption multimode Internet of Things wireless module as claimed in claim 3, which is characterized in that when the LORA modules,
When Sigfox modules use low-frequency range, the low-frequency range is 429-510MHz, further includes the second antenna and the second RF switch；
Second RF switch is connected with first RF switch, and the LORA modules, Sigfox modules are with described
Two RF switches connect, and second antenna connects second RF switch, and second RF switch is set as two into two
Go out.
7. super low-power consumption multimode Internet of Things wireless module as described in claim 1, which is characterized in that MCU control unit connects
Mouthful unit includes：SPI interface, GPIO interface, UART interface, I2C interface, USB interface.
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| CN109525498A (en) * | 2018-10-29 | 2019-03-26 | 成都博高信息技术股份有限公司 | The communication means of LoraWan network and client-server |
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