CN110349397A - A kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration - Google Patents
A kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration Download PDFInfo
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- CN110349397A CN110349397A CN201910721750.0A CN201910721750A CN110349397A CN 110349397 A CN110349397 A CN 110349397A CN 201910721750 A CN201910721750 A CN 201910721750A CN 110349397 A CN110349397 A CN 110349397A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- 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
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- 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
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- 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
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
A kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration, including acquisition module, the base station LoRa, cloud platform server and management and customer center；Acquisition module is used to acquire the water data of rural subscribers, and sends the data to the base station LoRa；The base station LoRa is for the data communication between cloud platform server and acquisition module；Cloud platform server is used to handle the data of whole system generation, and is deposited into database, accesses and uses for Ji Chao administrative center or user；Management includes Ji Chao administrative center and user's access platform with customer center, and Ji Chao administrative center is used for supervision and processing of the administrative staff to collected data, and user's access platform is mainly used for the electricity consumption inquiry of resident.The present invention carries out group-net communication by each acquisition node of the LoRa network to rural area central water supply, is then uploaded to cloud platform server by 4G network, to realize the smart meter reading service to rural water supply system user's water meter.
Description
Technical field
The present invention relates to smart meter reading technical field, in particular to a kind of rural area water meter based on LoRa Yu the 4G network integration
Intelligent meter data recording system.
Background technique
With the development of society, being directed to rural area common people daily water consumption problem, confession is concentrated in positive construction of rural for country
Hydraulic Projects, so that rural resident's problem of water consumption is greatly improved.Data are shown, by the end of the year 2016, the whole nation, which is concentrated, to be supplied
Hydraulic Projects share at more than 100 ten thousand.It is the important content of rural water supply system operational management to rural water supply system meterage, it is right
Rural subscribers' water consumption is measured, and can not only calculate for engineering economy and the diagnosis of pipe network model provides foundation, also advantageous
In the management level for improving Rural water supply scheduling, water supply security is improved, reduces production cost, so that engineering Recycle mechanism is carried out,
But there is no have corresponding technical solution for this problem in the prior art.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of agriculture based on LoRa Yu the 4G network integration
Village's water meter intelligent meter data recording system carries out group-net communication by each acquisition node of the LoRa network to rural area central water supply, then passes through
It crosses 4G network and is uploaded to cloud platform server, to realize the smart meter reading service to rural water supply system user's water meter.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration, including acquisition module, the base station LoRa,
Cloud platform server and management and customer center；
Acquisition module is used to acquire the water data of rural subscribers, and sends the data to the base station LoRa；
The base station LoRa is for the data communication between cloud platform server and acquisition module；
Cloud platform server is used to handle the data of whole system generation, and is deposited into database, copies in management for collection
The heart or user, which access, to be used；
Management includes Ji Chao administrative center and user's access platform with customer center, and Ji Chao administrative center is used for administrative staff
Supervision and processing to collected data, user's access platform are mainly used for the electricity consumption inquiry of resident.
The system is bi-directional system；
When transmitting from the bottom to top；
The acquisition module includes acquisition node, and acquisition node is connected with water meter to stoichiometric number by RS485 interface
According to being acquired, acquisition node passes through LoRa network transmission to the base station LoRa after the continuous data for collecting water meter, then passes through
4G network is established TCP/IP with cloud platform server and is connect, and collected data are uploaded and cause cloud platform server, and are saved extremely
In database, finally accesses and use for Ji Chao administrative center or user；
When from top to bottom transmitting, when detecting that rural subscribers' arrearage is more than certain limit, Ji Chao administrative center, which sends, to be referred to
It enables and gives cloud platform server, then be sent to the base station LoRa through internet, finally solenoid valve is sent to by LoRa network, to control
Service pipe valve shutdown processed, stops supplying water.
The MCU main control chip of the acquisition module uses the STM32L031 chip of ST semiconductor, LoRa radio communication mold
Block uses SX1278 module, and acquisition node RS485 interface uses ADM2483 chip
The acquisition module carries out CRC16 inspection to data first after interrupt requests, it is ensured that and data are accurate,
Then data frame type is judged again, and relevant operation is executed according to frame ordering, for the data from acquisition module, first
It is packaged framing, then adds frame head, postamble, the base station LoRa is then sent to by LoRa network；To from the base station LoRa
Data, first frame decoding remove frame head, postamble, then send data to solenoid valve, after solenoid valve receives data, control electromagnetism
Valve state.
The base station LoRa carries out CRC16 inspection to data first after interrupt requests, it is ensured that and data are accurate,
Then data frame type is judged again, and relevant operation is executed according to frame ordering, for the data from acquisition module, first
It is packaged framing, then adds frame head, postamble, acquisition module is then sent to by LoRa network；To from acquisition module
Data frame, first frame decoding remove frame head, postamble, are then sent to cloud platform server by the 4G network module in the base station LoRa,
Cloud platform server after receiving the data, accesses for Ji Chao administrative center or user use in real time.
The cloud platform server and LoRa base station data transmits are as follows:
When the base station LoRa communicates upwards, connection request, cloud platform are sent to cloud platform server by 4G network first
Server starts TCP monitoring after respond request, and the base station LoRa can constantly be sent out to cloud platform server after being successfully established connection
It send heartbeat data packets to detect connection status, prevents disconnecting, after ensure that the premise being successfully connected, cloud platform server will lead to
It crosses and sends heartbeat data packets to the base station LoRa to carry out the IP verifying of the base station LoRa, it will be authorized after being proved to be successful, with reality
Data communication between the existing base station LoRa and cloud platform server.
Beneficial effects of the present invention:
The invention proposes a kind of convenient, intelligent, efficient rural area water meter kilowatt meter reading-out systems, can solve rural water supply system
Meterage problem.The LoRa and 4G network integration scheme that the present invention uses avoid the existing peace of other existing designs well
Dress wiring, communication distance is close, working efficiency is low and it is at high cost the problems such as, in addition to this, the present invention also has small power consumption, anti-dry
The advantages that ability is strong, penetrability is strong, networking facilitates is disturbed, is with a wide range of applications.
Detailed description of the invention
Fig. 1 is present system overall construction drawing.
Fig. 2 is acquisition module structural schematic diagram of the present invention.
Fig. 3 is LoRa architecture of base station schematic diagram of the present invention.
Fig. 4 is acquisition module design cycle schematic diagram of the present invention.
Fig. 5 is LoRa base flow schematic diagram of the present invention.
Fig. 6 is cloud platform server of the present invention and LoRa base station communication schematic diagram.
Fig. 7 is cloud platform server of the present invention and LoRa base station communication flow diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
System global structure as shown in Figure 1, a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration,
Including acquisition module, the base station LoRa, cloud platform server and management and customer center.
Acquisition module structural schematic diagram is as shown in Fig. 2, the main task of acquisition module is to acquire rural subscribers to use water number
According to, and transmit data to the base station LoRa.For low-power consumption demand, this module MCU main control chip is using ST semiconductor
STM32L031 chip, it is a kind of super low-power consumption that ST semiconductor is released for wearable and Internet of Things market
ARMCortex-M0 processor is particularly suitable for battery powered application.The ARM of the chip FLASH, 8KB with 32KB,
UART interface, all the way SPI interface all the way, it is 76 μ A/MHz that its power consumption at Standby mode, which is under 0.23 μ A, Run mode,.
In the design, LoRa wireless communication module uses SX1278 module, and SX1278 module is highly integrated low-power consumption half pair of one kind
Work small-power data transmission module has the characteristics that long transmission distance, signal penetrability, data receiver and sends stable；It
External interface be SPI interface, while the high-performance PA of built-in 14dBm, the modulation based on spread spectrum in terms of receiving sensitivity
Mode is than the wireless high 8dB of the micropower based on FSK modulation mode；By adjusting spreading factor (SF) and error correction rate (CR) this two
Kind design variable can improve in signal bandwidth occupancy, data rate, link budget and reach between anti-interference preferably flat
Weighing apparatus.Wherein acquisition node RS485 interface is designed using ADM2483 chip.Power module is powered using battery, steady by DC-DC
Piezoelectricity source circuit provides stable voltage for STM32L031 chip and LoRa chip.
The software design of acquisition module carries out CRC16 inspection to data first as shown in figure 4, after interrupt requests, it is ensured that
Data are accurate, then judge again to data frame type, and execute relevant operation according to frame ordering.For from acquisition
The data of module first carry out being packaged into frame, then add frame head, postamble, are then sent to the base station LoRa by LoRa network；To next
Data from the base station LoRa, first frame decoding remove frame head, postamble, then send data to solenoid valve, solenoid valve receives data
Afterwards, solenoid valve state is controlled.To just realize the upload and the biography down of LoRa base station command of acquisition module data.
LoRa architecture of base station schematic diagram keeps cloud platform server and acquisition mould as shown in figure 3, the base station LoRa is mainly responsible for
Data communication between block.The data of water meter that aggregation node is uploaded by acquisition node in LoRa wireless network receiving area, and
By 4G mobile network, it is uploaded to cloud platform server.For the module, main control chip is in addition to low-power consumption demand to be met, also
Certain computing capability and storage capacity are needed, therefore selects STM32F103ZET, this is a 32 ARM microcontrollers
Device is based on cortex-M3 framework, maximum operating frequency up to 72Hz, the large capacity program storage of built-in maximum 512K and
The SRAM of maximum 64K.Meanwhile it also has three kinds of sleep, shutdown and standby mode low power mode of operation.Power module design
The AC-DC circuit inputted using Width funtion, input voltage are exchange 100-240V, and output voltage is direct current 5V, through ASM1117-
Stable 3.3V voltage is provided after 3.3 voltage-stabiliser tube pressure stabilizings for main control chip STM32F103ZET and LoRa chip.
The design of LoRa base station software carries out CRC16 inspection to data first as shown in figure 5, after interrupt requests, it is ensured that number
According to accurate, then data frame type is judged again, and relevant operation is executed according to frame ordering.For from acquisition mould
The data of block first carry out being packaged into frame, then add frame head, postamble, are then sent to acquisition module by LoRa network；To coming from
The data frame of acquisition module, first frame decoding remove frame head, postamble, are then sent to cloud by the 4G network module in the base station LoRa
Platform Server, cloud platform server after receiving the data, access for Ji Chao administrative center or user use in real time.To realize
The upload of LoRa base station data and assigning for cloud platform server instruction.
Cloud platform server is used to handle the data of whole system generation, and is deposited into database, copies in management for collection
The heart or user, which access, to be used；
This paper cloud platform server system is based on Windows Server Cloud Server platform and builds, in transport layer using complete
Duplex transmission mode, C/S model, client are defined as the base station LoRa, and server-side is defined as management and customer center.Its communication is shown
It is intended to as shown in Figure 6.
Cloud platform server, as shown in fig. 7, when the base station LoRa communicates upwards, passes through first with LoRa base station communication process
4G network sends connection request to cloud platform server, and cloud platform server starts TCP monitoring after respond request, successfully building
The base station LoRa constantly can send heartbeat data packets to cloud platform server and detect connection status after vertical connection, prevent disconnecting.
After ensure that the premise being successfully connected, cloud platform server will be by sending heartbeat data packets to the base station LoRa to carry out LoRa base
The IP verifying stood, will authorize it after being proved to be successful, to realize the data communication between the base station LoRa and cloud platform server.
Above system data packet uses .JSON format, and uploads in the form of text, all data packets include corresponding address code and
Acquire transceiver module coding.
Management includes Ji Chao administrative center and user's access platform with customer center, and Ji Chao administrative center is used for administrative staff
Supervision and processing to collected data, user's access platform are mainly used for the electricity consumption inquiry of resident.
Data double-way transmission is supported in this system master-plan.
When from the bottom to top, acquisition node is connected with water meter to metering according to Modbus communications protocol, by RS485 interface
Data are acquired, and acquisition node passes through LoRa network transmission to the base station LoRa after the continuous data for collecting water meter, then leads to
It crosses 4G network and establishes TCP/IP with cloud platform server and connect, collected data are uploaded and cause cloud platform server, and are saved
To database, finally accesses and use for Ji Chao administrative center or user；When from top to bottom, when detecting that rural subscribers' arrearage is super
When crossing certain limit, Ji Chao administrative center sends instructions to cloud platform server, then is sent to the base station LoRa through internet, finally
It is sent to solenoid valve by LoRa network, to control the shutdown of service pipe valve, stops supplying water.
Application layer communication module: communication module selects data frame pattern as data transfer mode, in data transmission procedure
In to data use CRC16 checking algorithm, thus guarantee transmit data it is accurate.Wherein, data frame is divided into four seed types,
Respectively uplink data frames, downstream feedback frame, uplink feedback frame, downlink command frame.Uplink data frames indicate that acquisition module will be adopted
The data of water meter collected is uploaded to cloud platform server indirectly；Downstream feedback frame indicates that acquisition module can judge according to present frame
Judge whether cloud platform server has received uplink data frames；It is electronic that downlink command frame indicates that cloud platform server is sent to indirectly
The instruction of valve；Uplink feedback frame indicates that cloud platform server can judge whether acquisition module has received downlink by present frame
Command frame.
System network topology design: as a typical stelliform connection topology configuration, LoRa network has structure simple
The features such as low with power.It can be expired in the water meter reading system in most of rural water supply system area using Star Network structure
Sufficient actual requirement.It is practical although a father node theoretically, in LoRa network can accommodate hundreds of thousands of a terminal nodes
Excessive terminal node will lead to coordinator over-burden in use process, so that network paralysis or the bit error rate increase.Cause
This, can take the communication channel to SX1278 radio-frequency module to be configured, and the LoRa network in a region is divided into several
Network, to reduce the expense of communication link.In order to reduce interfering with each other between signal, the application is to network section in the same area
Point carries out subregion and is arranged to different frequency ranges.In LoRa network, one default channel of Systematic selection, and make coordinator silent at this
Recognize in channel and establishes the network of oneself.Terminal node and acquisition node in system also select a default channel that network is added,
It in this way can be to avoid the interference of other networks.Due to the spread spectrum of SX1278 module, make different data rate transmission rates
Between without Communication Jamming, improve the interference performance of equipment.Therefore, it to the network packet in a region, can effectively reduce
The bit error rate improves the stability of the network operation.
System testing and analysis: by building test environment, running effect is verified.Analog network packet
1 base station LoRa (i.e. one is collected collection point) is included, 8 acquisition modules (i.e. 8 acquisition nodes) are adopted between the base station LoRa and PC machine
It is connected with RS-232 mode, is sent datagram using Solarnumen Comdebug software to acquisition module, inquiry user's water meter is real-time
Data.RF center frequency in test is 470MHz, transmission power 20dbm, serial port baud rate 9600bps.
Table 1 is the test data in a certain rural water supply system area in Xianyang, Shanxi province city, is tested respectively in different distance item
Under part, data packet 200 are issued every time.As known from Table 1, rural water supply system area, packet loss with communication distance increasing
Add and increase, but in a certain distance, packet loss or relatively low can satisfy the water meter in rural area central water supply area
Constructing communication network requirement.
1 system actual test result of table
Claims (6)
1. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration, which is characterized in that including acquisition module,
The base station LoRa, cloud platform server and management and customer center；
Acquisition module is used to acquire the water data of rural subscribers, and sends the data to the base station LoRa；
The base station LoRa is for the data communication between cloud platform server and acquisition module；
Cloud platform server is used to handle the data of whole system generation, and is deposited into database, for Ji Chao administrative center or
User, which accesses, to be used；
Management and customer center include Ji Chao administrative center and user's access platform, and Ji Chao administrative center is for administrative staff to adopting
The supervision and processing of the data collected, user's access platform are mainly used for the electricity consumption inquiry of resident.
2. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration according to claim 1, special
Sign is that the system is bi-directional system；
When transmitting from the bottom to top；
The acquisition module includes acquisition node, acquisition node be connected by RS485 interface with water meter to continuous data into
Row acquisition, acquisition node passes through LoRa network transmission to the base station LoRa after the continuous data for collecting water meter, then passes through 4G net
Network is established TCP/IP with cloud platform server and is connect, and collected data are uploaded and cause cloud platform server, and are saved to data
In library, finally accesses and use for Ji Chao administrative center or user；
When from top to bottom transmitting, when detecting that rural subscribers' arrearage is more than certain limit, Ji Chao administrative center is sent instructions to
Cloud platform server, then it is sent to the base station LoRa through internet, it finally is sent to solenoid valve by LoRa network, to control use
Aqueduct valve shutdown in family stops supplying water.
3. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration according to claim 1, special
Sign is that the MCU main control chip of the acquisition module uses the STM32L031 chip of ST semiconductor, LoRa radio communication mold
Block uses SX1278 module, and acquisition node RS485 interface uses ADM2483 chip.
4. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration according to claim 1, special
Sign is that the acquisition module carries out CRC16 inspection to data first, it is ensured that data are accurate, so after interrupt requests
Data frame type is judged again afterwards, and relevant operation is executed according to frame ordering, it is advanced for the data from acquisition module
Row encapsulation framing, then frame head, postamble are added, the base station LoRa is then sent to by LoRa network；To the number from the base station LoRa
According to first frame decoding removes frame head, postamble, then sends data to solenoid valve, after solenoid valve receives data, controls solenoid valve
State.
5. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration according to claim 1, special
Sign is that the base station LoRa carries out CRC16 inspection to data first, it is ensured that data are accurate, so after interrupt requests
Data frame type is judged again afterwards, and relevant operation is executed according to frame ordering, it is advanced for the data from acquisition module
Row encapsulation framing, then frame head, postamble are added, acquisition module is then sent to by LoRa network；To the number from acquisition module
According to frame, first frame decoding removes frame head, postamble, is then sent to cloud platform server, cloud by the 4G network module in the base station LoRa
Platform Server after receiving the data, accesses for Ji Chao administrative center or user use in real time.
6. a kind of rural area water meter intelligent meter data recording system based on LoRa Yu the 4G network integration according to claim 1, special
Sign is that the cloud platform server and LoRa base station data transmit are as follows:
When the base station LoRa communicates upwards, connection request, cloud platform service are sent to cloud platform server by 4G network first
Device starts TCP monitoring after respond request, and the base station LoRa constantly can send the heart to cloud platform server after being successfully established connection
Jump data packet detect connection status, prevent disconnecting, after ensure that the premise being successfully connected, cloud platform server will pass through to
The base station LoRa sends heartbeat data packets to carry out the IP verifying of the base station LoRa, will authorize to it after being proved to be successful, to realize
Data communication between the base station LoRa and cloud platform server.
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| CN114627633A (en) * | 2020-12-12 | 2022-06-14 | 福建江夏学院 | Ad hoc network water meter centralized reading system and method constructed based on multiple agents |
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Application publication date: 20191018 |