CN206832310U - A kind of wireless watermeter using LoRaWAN Class B-modes - Google Patents
A kind of wireless watermeter using LoRaWAN Class B-modes Download PDFInfo
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- CN206832310U CN206832310U CN201720658784.6U CN201720658784U CN206832310U CN 206832310 U CN206832310 U CN 206832310U CN 201720658784 U CN201720658784 U CN 201720658784U CN 206832310 U CN206832310 U CN 206832310U
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Abstract
The utility model discloses a kind of wireless watermeter using LoRaWAN Class B-modes, and LoRa wireless watermeters include microprocessor unit, LoRa modules, giant magneto-resistance sensor, NFC module, interface unit, power supply unit, alarm module, clock module, display unit；The NFC module is built in the LoRa modules, is read and is configured for carrying out parameter by NFC technology；The LoRa modules are connected in a manner of LoRaWAN Class B with LoRa teletransmission gateways, and the time slot of oneself is distributed to by the information transfer that correlation acquisition arrives to the LoRa teletransmission gateways by the LoRa teletransmissions gateway.The reverse operatings such as the utility model can be copied by high in the clouds platform initiate point, valve control act, practical.
Description
Technical field
It the utility model is related to the technical fields such as radio meter register, it is particularly a kind of using LoRaWAN Class B-modes
Wireless watermeter.
Background technology
Traditional wireless watermeter generally use GFSK Gaussian Frequency Shift Keying GFSK modes, input signal through gauss low frequency filter
After premodulated filtering, then carry out the digital modulation mode of FSK modulation.The receiving terminal of this kind of GFSK wireless modules is in order to reliably solve
Wireless signal is adjusted, generally requires 8dB minimum signal to noise ratio（SNR）, it is limited that this results in reliable communication distance, and anti-interference energy
Power is poor.Relative to LoRa technical approach, SNR meeting gap 33dB, because LoRa SNR is -25dB.In open field, traditional FSK
The communication distance of mode is generally less than 800 meters, and LoRa is in theory up to 15 kilometers, in city also up to 2 kilometers.Tradition simultaneously
FSK modes compare LoRa technical approach, and power consumption is higher, and during using battery powered, the life-span is relative just shorter.And traditional nothing
Line kilowatt meter reading-out system is generally three-level networking structure, and installation is safeguarded complicated.
Traditional wireless watermeter also has the wireless technology using short-distance networkings such as similar ZigBee, and such product is due to logical
Communication distance is near, it is necessary to the more ZigBee routers of equipment, for communication relay, virtually add hardware costs and O＆M into
This.
And the wireless watermeter and kilowatt meter reading-out system of LoRa technologies are equally used, typically come using channel activity detector (CAD)
Other LoRa signals are detected, meter-reading function is realized by periodic dormancy and aerial wake-up.But because LoRa is wirelessly transferred
Distance is remote, and relative size of layouting is big, using CAD awakening modes, can cause regular false wake-up, wireless receiver obtains from channel
The leading code signs of LoRa for evidence of fetching, the electric current of Rx patterns is consumed during this period.It can so cause constantly in wake-up, enter
The state that dormancy is standby, is waken up again, actual power loss are not inconsistent with theoretical power consumption, reduce the cruising time of battery.Meanwhile this
The kilowatt meter reading-out system generally use tree topology of class, has continued the thinking inertia of early stage wired meter reading, and wireless signal is mutually concerned with
It is serious to disturb phenomenon.
Also the wireless watermeter and kilowatt meter reading-out system for having part to use LoRa technologies, establish Mesh（Fully connected topology）MANET
Mode, the routing node in similar ZigBee Mesh MANETs, each equipment can mutual wireless connection, can select most
Excellent communication path, but just because of each equipment can turn into others' relay point, regular wake-up and interference are inevitable, work(
Consumption greatly increases, and Wireless water meter terminal needs bigger battery capacity or using the other modes such as solar powered.
And traditional large-diameter water meter meter reading terminal, more use GPRS communication modes, directly will collection signal transmit to
Platform, not only communication connection is also unstable, and power consumption is also big, and the technical approach of this combination is substantially at the state that will be eliminated.
Utility model content
The utility model makes improvement for above-mentioned technical problem, i.e. technical problem to be solved in the utility model is to carry
For a kind of low-power consumption, can temporally gap shared communication channel and be not easy false wake-up, LoRa that battery life is longer without
Line water meter.
In order to solve the above-mentioned technical problem, a kind of technical scheme of the present utility model is：One kind uses LoRaWAN Class
The wireless watermeter of B-mode, water information is used by what spread spectrum technic will collect, is transmitted to LoRa teletransmission gateways, including it is micro-
Processor unit, and be connected with the microprocessor unit LoRa modules, giant magneto-resistance sensor, NFC module, interface unit,
Power supply unit, alarm module, clock module, display unit.
Further, said supply unit is respectively the microprocessor unit, the LoRa modules, giant magnetoresistance biography
Sensor, the NFC module, the interface unit, the alarm module, the clock module, display unit power supply.
Further, the NFC module is built in the LoRa modules, for being carried out by NFC technology
Parameter is read and configuration.
Further, the LoRa modules are connected in a manner of LoRaWAN Class B with LoRa teletransmission gateways, by described
LoRa teletransmission gateways distribute to the time slot of oneself by the information transfer that correlation acquisition arrives to the LoRa teletransmission gateways.
Further, the giant magneto-resistance sensor uses a kind of low-power consumption of small-sized package and exports square-wave signal
TMR sensor, water meter water metering is carried out by detecting rotating excitation field, while according to the anglec of rotation, judge the positive negative side of current
To.
Further, the interface unit includes motor driving interface, Ethernet interface, USB interface；The motor drives
Mobile interface by DC motor Driver, can external valve control module, for being copied by high in the clouds platform initiate point, the reverse operating such as valve control
Action.
Further, the NFC module is connected with NFC coils, and the wireless water is waken up by the mobile phone with NFC function
Table, the special APP of configuration parameter is used in combination, carries out functional configuration, digital independent and the program upgrading of the wireless watermeter.
Further, the clock module carries out time calibration and synchronization by the fiducial time on LoRa teletransmission gateways,
Reduce the synchronous time difference of communication information.
Further, said supply unit include battery, LDO and filter rectifier, battery power detection circuit and
Temperature sensing circuit；The temperature sensing circuit is close to the battery, for detecting battery and the shell of water flowmeter vivo environment
Temperature.
Further, it is described wireless that the battery provides stable voltage after the LDO and filter rectifier
Water meter is powered, and the current voltage of the battery is detected by the battery power detection circuit, and to the microprocessor list
Member feedback.
Further, the microprocessor unit is a kind of microprocessor of low-power consumption (Central Processing
Unit, CPU).
Further, the microprocessor of the low-power consumption is the high-performance based on 32 ARM kernels, low-power consumption microprocessor
Device.
Compared with prior art, the utility model has the advantages that：
（1）Using TDMALoRaWAN Class B modes, temporally gap shared communication channel, wireless terminal are not easy to miss
Wake up, reduce many unnecessary power consumption spendings；
（2）It is low in energy consumption, it is more than 9 years with battery powered, reduces the maintenance cost for changing battery；
（3）Built-in NFC technology, it is directly non-contact close to LoRa Wireless water meter terminals are waken up by mobile phone, enter
Row functional configuration, digital independent and program upgrading, reduce the trouble of hardware docking, very convenient；
（4）Communication distance is remote, it is not necessary to lays intensive LoRa teletransmission gateways, reduces hardware costs and O＆M cost；
（5）Using giant magneto-resistance sensor, water (flow) direction is can recognize that, while can be copied by high in the clouds platform initiate point, valve control etc.
Reverse operating acts, practical.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model embodiment.
Fig. 2 is the system architecture diagram of the utility model embodiment.
In Fig. 1：1- microprocessor units, 2-LoRa modules, 3- giant magneto-resistance sensors, 4- NFC modules, 5- interface units,
6- power supply units, 7- alarm modules, 8- clock modules, 9- display units, 401- NFC coils, 501- motors driving interface,
502- Ethernet interfaces, 503- USB interfaces.
Embodiment
The required accompanying drawing used in embodiment or description of the prior art will be briefly described below, show and
Easy insight, described embodiment are part of the embodiment of the present utility model, and accompanying drawing is some embodiment party of the present utility model
Formula, for those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Obtain the accompanying drawing of other forms.
The explanation of nouns of LoRaWAN Class B-modes：LoRaWAN terminal devices be divided into Class A, Class B,
The classes of Class C tri-, Class A are two-way communication terminal devices, and the two-way communication terminal that Class C have maximum receiving slit is set
Standby, Class B refer to the two-way communication terminal device with default receiving slit.Class B terminal devices can be in preset time
Open unnecessary reception window, in order to reach this purpose, terminal device synchronously can receive a Beacon from gateway, pass through
Beacon synchronizes the time of base station and module.This mode can make server know that terminal device receives data.
As shown in figure 1, a kind of wireless watermeter using LoRaWAN Class B-modes, will be adopted by spread spectrum technic
What is collected uses water information, transmits to LoRa teletransmission gateways, including microprocessor unit 1, and be connected with the microprocessor unit 1
LoRa modules 2, giant magneto-resistance sensor 3, NFC module 4, interface unit 5, power supply unit 6, alarm module 7, clock module 8, aobvious
Show unit 9.
In the present embodiment, said supply unit 6 be respectively the microprocessor unit 1, it is the LoRa modules 2, described
Giant magneto-resistance sensor 3, the NFC module 4, the interface unit 5, the alarm module 7, the clock module 8, the display
Unit 9 is powered.
In the present embodiment, the NFC module 4 is built in the LoRa modules 2, for passing through NFC near-field communication skills
Art carries out parameter and reads and configure.
In the present embodiment, the LoRa modules 2 are connected in a manner of LoRaWAN Class B with LoRa teletransmission gateways, are pressed
The LoRa teletransmissions gateway distributes to the time slot of oneself by the information transfer that correlation acquisition arrives to the LoRa teletransmission gateways.
In the present embodiment, the display unit 9 includes LCD liquid crystal displays, for showing current water meter monitoring information.
In the present embodiment, the alarm module 7 is used for abnormal alarm, while during abnormal conditions generation, synchronously reports cloud
Hold platform.
In the present embodiment, low-power consumption and output square wave letter of the giant magneto-resistance sensor 3 using a kind of small-sized package
Number TMR sensor, carry out water meter water metering by detecting rotating excitation field, while according to the anglec of rotation, judge current just
Opposite direction.
In the present embodiment, the giant magneto-resistance sensor 3 is by the rotating speed of direct measurement water meter turbine, obtains water meter
Instantaneous delivery, so as to monitor the use regimen condition of water meter in real time.
In the present embodiment, using two and the giant magneto-resistance sensor 3 of the above, according to the giant magneto-resistance sensor 3
Different conditions signal, obtain rotary speed and the direction of impeller.
In the present embodiment, the interface unit 5 includes motor driving interface 501, Ethernet interface 502, USB interface
503；The motor driving interface 501 by DC motor Driver, can external valve control module, for passing through high in the clouds platform initiate point
Copy, the action of the reverse operating such as valve control.
In the present embodiment, the Ethernet interface 502 is used to directly connect internet by way of Ethernet connection,
The USB interface 503 is used to connect USB device；The non-wireless watermeter of too network interface 502 and the USB interface 503 must
One of standby component units.
In the present embodiment, the NFC module 4 is connected with NFC coils 401, and institute is waken up by the mobile phone with NFC function
Wireless watermeter is stated, the special APP of configuration parameter is used in combination, carries out functional configuration, digital independent and the journey of the wireless watermeter
Sequence upgrades.
In the present embodiment, the NFC coils 401 can also be substituted for NFC antenna；
In the present embodiment, the clock module 8 by fiducial time on LoRa teletransmission gateways carry out time calibration and
It is synchronous, reduce the synchronous time difference of communication information.
In the present embodiment, said supply unit 6 includes battery, LDO and filter rectifier, battery electric quantity detection electricity
Road and temperature sensing circuit；The temperature sensing circuit is close to the battery, for detecting in the battery and water meter case
Environment temperature.
In the present embodiment, it is described that the battery provides stable voltage after the LDO and filter rectifier
Wireless watermeter is powered, and the current voltage of the battery is detected by the battery power detection circuit, and to the microprocessor
Device unit 1 feeds back.
In the present embodiment, the microprocessor unit 1 is a kind of microprocessor (Central of low-power consumption
Processing Unit, CPU).
In the present embodiment, the microprocessor of the low-power consumption is the high-performance based on 32 ARM kernels, the micro- place of low-power consumption
Manage device.
In order to which become apparent from expressing the wireless watermeter practices scheme, as shown in Fig. 2 being a kind of to use LoRaWAN
Class B wireless kilowatt meter reading-out system, including several described wireless watermeters, several LoRa teletransmissions gateway, high in the clouds platform, backstages
Administrative center, remote inquiry monitoring center, cell phone application application；
Data supervision server is configured with the high in the clouds platform, and the system management software of B/S framework is installed.
In the present embodiment, the system management software of the B/S framework is used to realize files on each of customers management, meter message tube
Reason, the generation of water consumption Report Server Management, data sheet and the application of function such as export, parameter configuration.
In the present embodiment, the wireless watermeter is connected with the LoRa teletransmissions gateway automated wireless, while is each preserved
Optimal path is communicated, the wireless watermeter can be registered in multiple LoRa teletransmissions gateways, realize that a network system is gathered around
There are multiple gateways, the LoRa teletransmissions gateway arrangement is more, and communication is more reliable and stable.
In the present embodiment, multiple wireless watermeter collection water meter information, are wirelessly uploaded to LoRaWAN protocol modes
The LoRa teletransmissions gateway, enters in line data set and collects, then is connected by the LoRa teletransmissions gateway by GPRS/3G/4G modes
The high in the clouds platform, and concentrate and upload correlation acquisition information, realize radio meter register function.
In the present embodiment, the back-stage management center, the remote inquiry monitoring center and the cell phone application are using use
In searching and managing water meter Monitoring Data.
In the present embodiment, the wireless kilowatt meter reading-out system uses two-way communication, and descending and up channel ratio exists
1:12~1:Between 18.
In the present embodiment, NB-IoT moulds be could alternatively be as a kind of optional embodiment, the LoRa modules 2
Group, or include NB-IoT multimode communication module group, the multimode communication module group is based on cellular network and LTE protocol
Gather the communication module group of multiple communication modes, include NB-IoT, eMTC and EGPRS multimode communication modes；The multimode
Communication module group is built-in with the eSIM cards of the special number section of Internet of Things.
In the present embodiment, the utility model uses TDMALoRaWAN Class B modes, temporally gap shared communication
Channel, wireless terminal are not easy false wake-up, reduce many unnecessary power consumption spendings；Using Low-power Technology, battery powered is used
It is more than 9 years, reduces the maintenance cost for changing battery；Built-in NFC technology simultaneously, directly connects by the way that mobile phone is non-
Nearly wake-up LoRa Wireless water meter terminals are contacted against, carry out functional configuration, digital independent and program upgrading, reduce the fiber crops of hardware docking
It is tired, it is very convenient；Communication distance is remote, it is not necessary to lays intensive LoRa teletransmission gateways, reduces hardware costs and O＆M cost；Adopt
With giant magneto-resistance sensor, water (flow) direction is can recognize that, while can be copied by high in the clouds platform initiate point, the reverse operating action such as valve control,
It is practical.
The utility model is from a line actual demand, and thinking is novel, and it is convenient that technology is realized, wide market.
Preferred embodiment of the present utility model is the foregoing is only, anyone can obtain under enlightenment of the present utility model
Go out other various forms of wireless watermeters using LoRaWAN Class B-modes, it is all according to present utility model application the scope of the claims
The equivalent changes and modifications done, it should all belong to covering scope of the present utility model.
Claims (6)
1. a kind of wireless watermeter using LoRaWAN Class B-modes, it will be collected by spread spectrum technic and believed with water
Breath, is transmitted to LoRa teletransmission gateways, it is characterised in that including microprocessor unit（1）, and with the microprocessor unit（1）
The LoRa modules of connection（2）, giant magneto-resistance sensor（3）, NFC module（4）, interface unit（5）, power supply unit（6）, alarm module
（7）, clock module（8）, display unit（9）；
Said supply unit（6）Respectively described microprocessor unit（1）, the LoRa modules（2）, the giant magneto-resistance sensor
（3）, the NFC module（4）, the interface unit（5）, the alarm module（7）, the clock module（8）, the display it is single
Member（9）Power supply；
The NFC module（4）It is built in the LoRa modules（2）In, for carrying out parameter reading by NFC technology
With configuration；
The LoRa modules（2）It is connected in a manner of LoRaWAN Class B with LoRa teletransmission gateways, by the LoRa teletransmissions gateway
The time slot of oneself is distributed to by the information transfer that correlation acquisition arrives to the LoRa teletransmission gateways.
A kind of 2. wireless watermeter using LoRaWAN Class B-modes according to claim 1, it is characterised in that institute
State giant magneto-resistance sensor（3）Using a kind of low-power consumption of small-sized package and the TMR sensor of output square-wave signal.
A kind of 3. wireless watermeter using LoRaWAN Class B-modes according to claim 1, it is characterised in that institute
State interface unit（5）Include motor driving interface（501）, Ethernet interface（502）, USB interface（503）；The motor drives
Mobile interface（501）Pass through DC motor Driver.
A kind of 4. wireless watermeter using LoRaWAN Class B-modes according to claim 1, it is characterised in that institute
State NFC module（4）With NFC coils（401）Connection.
A kind of 5. wireless watermeter using LoRaWAN Class B-modes according to claim 1, it is characterised in that institute
State power supply unit（6）Include battery, LDO and filter rectifier, battery power detection circuit and temperature sensing circuit；It is described
Temperature sensing circuit is close to the battery, for detecting battery and shell of water flowmeter the vivo environment temperature.
A kind of 6. wireless watermeter using LoRaWAN Class B-modes according to claim 1, it is characterised in that institute
State microprocessor unit（1）It is a kind of microprocessor of low-power consumption.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494654A (en) * | 2018-03-26 | 2018-09-04 | 深圳市慧联通信技术有限公司 | A kind of intelligent energy information collection management method and system |
| CN108711276A (en) * | 2018-08-14 | 2018-10-26 | 南方电网科学研究院有限责任公司 | A kind of gateway device applied to power grid Micro-sensor system |
| CN108877180A (en) * | 2018-07-13 | 2018-11-23 | 河南汇纳科技有限公司 | A kind of intelligent meter data recording system based on LoRa wireless network |
| CN110308916A (en) * | 2019-06-27 | 2019-10-08 | 厦门四信通信科技有限公司 | OTA upgrade method, device, equipment, system and storage medium based on lorawan agreement |
| CN110417854A (en) * | 2019-06-17 | 2019-11-05 | 武汉慧联无限科技有限公司 | A kind of measuring instrument control method, device, storage medium and measuring instrument |
| CN111385773A (en) * | 2020-03-24 | 2020-07-07 | 武汉科技大学 | Intelligence water gauge control circuit based on NB-IOT |
| CN113596622A (en) * | 2021-07-06 | 2021-11-02 | 山东晨硕仪表有限公司 | Water meter data acquisition terminal based on LORA wireless communication technology |
-
2017
- 2017-06-08 CN CN201720658784.6U patent/CN206832310U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494654A (en) * | 2018-03-26 | 2018-09-04 | 深圳市慧联通信技术有限公司 | A kind of intelligent energy information collection management method and system |
| CN108877180A (en) * | 2018-07-13 | 2018-11-23 | 河南汇纳科技有限公司 | A kind of intelligent meter data recording system based on LoRa wireless network |
| CN108711276A (en) * | 2018-08-14 | 2018-10-26 | 南方电网科学研究院有限责任公司 | A kind of gateway device applied to power grid Micro-sensor system |
| CN110417854A (en) * | 2019-06-17 | 2019-11-05 | 武汉慧联无限科技有限公司 | A kind of measuring instrument control method, device, storage medium and measuring instrument |
| CN110308916A (en) * | 2019-06-27 | 2019-10-08 | 厦门四信通信科技有限公司 | OTA upgrade method, device, equipment, system and storage medium based on lorawan agreement |
| CN110308916B (en) * | 2019-06-27 | 2022-08-05 | 厦门四信通信科技有限公司 | OTA upgrading method, device, equipment, system and storage medium based on lorawan protocol |
| CN111385773A (en) * | 2020-03-24 | 2020-07-07 | 武汉科技大学 | Intelligence water gauge control circuit based on NB-IOT |
| CN113596622A (en) * | 2021-07-06 | 2021-11-02 | 山东晨硕仪表有限公司 | Water meter data acquisition terminal based on LORA wireless communication technology |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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