CN107064622A - The radio communication harvester and communication acquisition method of three-phase intelligent electric-energy meter - Google Patents
The radio communication harvester and communication acquisition method of three-phase intelligent electric-energy meter Download PDFInfo
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- CN107064622A CN107064622A CN201710389320.4A CN201710389320A CN107064622A CN 107064622 A CN107064622 A CN 107064622A CN 201710389320 A CN201710389320 A CN 201710389320A CN 107064622 A CN107064622 A CN 107064622A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of radio communication harvester of three-phase intelligent ammeter, including power module, Wireless communication interface module, controller module, infrared communication module, usb interface module and 4G wireless communication modules；Power module is powered；Wireless communication interface module obtains three-phase intelligent electric-energy meter Data Transmission Control Unit module and is uploaded to main website by 4G wireless communication modules；Infrared communication module is used for the parameter setting of radio communication harvester；Usb interface module is used for the upgrading of radio communication harvester.Present invention also offers the communication acquisition method of the radio communication harvester of the three-phase intelligent ammeter, including self-inspection；Obtain main website control instruction and issue three-phase intelligent electric-energy meter；Obtain three-phase intelligent electric-energy meter data and main website is uploaded by 4G wireless communication modules.Traffic rate of the present invention is higher, and faster, more preferably, stability is higher, and power consumption is lower, and circuit is simple and reliable for communication reliability for communication speed.
Description
Technical field
Present invention relates particularly to a kind of radio communication harvester of three-phase intelligent ammeter and communication acquisition method.
Background technology
With the development and the improvement of people's living standards of national economy technology, electric energy has become the daily production of people
One of with secondary energy sources indispensable in life, the production and life given people brings endless facility.Intelligent electric energy meter
As one of essential elements that energy data is measured and transmitted in power system, the mode and reliability of the transmission of its electric energy just show
Obtain particularly important.
At present, the uplink communication of three-phase intelligent electric-energy meter mainly has two kinds of communication modes, and one kind is communication, separately
It is outer it is a kind of be power line carrier communication mode, two kinds of communication modes are all, using external moduleization design, by socket and to insert
Pin is connected with three-phase intelligent electric-energy meter, and wireless communication collection module is referred to as using the external module of communication.
The uplink communication of wireless communication collection module and main website most common at present is to use 2G GPRS communication modes, few
Amount uses cdma communication mode.The functional block diagram of conventional 2G radio communication harvesters is as shown in Figure 1 at present.2G communication parties
Formula can meet basic power information acquisition system telecommunications functions.But, because the traffic rate of 2G modules is relatively low, nothing
Method meets the demand of big file remote upgrade and big data real-time Transmission.
In addition, original 2G communication modes, either China Mobile and UNICOM are only supported, or China Telecom is only supported, it is simultaneous
Hold autgmentability not strong, in some occasions, because certain network coverage is not good or 2G capacity saturation problems, cause 2G communication modules
Go offline frequently, if necessary to change the operator that the network coverage is good or capacity is sufficient, it is necessary to change whole radio communication collection
Module, causes the inconvenience of onsite application.
The content of the invention
An object of the present invention is the nothing for providing the three-phase intelligent ammeter that a kind of traffic rate is fast, communication is reliable and stable
Line communication harvester.
The second object of the present invention is the communication collection for the radio communication harvester for providing the three-phase intelligent ammeter
Method.
The radio communication harvester for this three-phase intelligent ammeter that the present invention is provided, including power module, radio communication
Interface module, controller module, infrared communication module and usb interface module, in addition to 4G wireless communication modules；Power module from
Three-phase intelligent electric-energy meter obtains electric energy and powered for the radio communication harvester；Wireless communication interface module and three-phase intelligent
Electric energy meter connects and obtains the service data and continuous data of three-phase intelligent electric-energy meter；Infrared communication module is adopted for radio communication
The parameter setting of acquisition means and reading；Usb interface module is used for the software upgrading of radio communication harvester；Wireless communication interface
The data of acquisition are transferred to controller module by module, then by 4G wireless communication modules are uploaded to main website by controller module.
Described 4G wireless communication modules include 4G modules, and be connected with 4G modules UART/ serial port level chance-over circuits,
Switching on and shutting down control circuit, SIM card interface circuit and antennal interface and antenna；UART/ serial port level chance-over circuits are used in control
The conversion of communication level is carried out between device module and 4G modules；Switching on and shutting down control circuit is used to receiving that controller module to issue opens
Shutdown control signal is simultaneously transferred to 4G modules；SIM card interface circuit is used to read SIM job information and is transferred to 4G modules；
The data of the controller module of acquisition are uploaded to main website by 4G modules by way of antennal interface and antenna are communicated with 4G, or
The data that reception main website is issued are transferred to controller module together.
Described 4G modules are model N710 4G communication modules.
The radio communication harvester of described three-phase intelligent ammeter also includes memory cell；Memory cell and controller mould
Block is connected, for storing the data such as the running parameter of three-phase intelligent ammeter radio communication harvester and the electric flux of collection.
The radio communication harvester of described three-phase intelligent ammeter also includes RS232 interface circuits；RS232 interface circuits
It is connected with controller module, is connected and communicates with controller module by RS232 interface circuits for outside, completes three-phase intelligent
The system maintenance of the radio communication harvester of ammeter.
Described controller module is that the controller circuitry being made up of model LPC1765 controller is constituted.
Described power module include battery, battery management unit, 12V/5V power circuits, 5V/3.3V power circuits and
5V/4V power circuits；Three-phase intelligent electric-energy meter exports 12V power supplys and battery is charged by battery management unit, battery management list
Member is used to be managed the battery of wireless communication module；The 12V power supplys of three-phase intelligent electric-energy meter output also pass through 12V/5V electricity
Source circuit is converted to two-way 5V power supplys, and 5V power supplys are converted to 3.3V power supplys by 5V/3.3V power circuits and are controller all the way
Module for power supply, another road 5V power supplys are then converted to 4V power supplys by 5V/4V power circuits and are 4G wireless communication module power supplies.
The radio communication harvester of described three-phase intelligent ammeter is to pass through 2XP6 contact pins with the connection of three-phase intelligent table
Connection.
Present invention also offers the communication acquisition method of the radio communication harvester of the three-phase intelligent electric-energy meter, including
Following steps：
S1. simultaneously auto dialing logs in main website to the radio communication harvester power-on self-test of three-phase intelligent electric-energy meter；
S2. log in after main website, the control that the radio communication harvester real-time reception main website of three-phase intelligent electric-energy meter is issued refers to
Order；
S3. the main website control instruction of reception is passed through wireless communication interface by the radio communication harvester of three-phase intelligent electric-energy meter
Module issues three-phase intelligent electric-energy meter；
S4. the radio communication harvester of three-phase intelligent electric-energy meter obtains three-phase intelligent electric energy by Wireless communication interface module
The running parameter and continuous data of table；
S5. the radio communication harvester of three-phase intelligent electric-energy meter is wireless by 4G by the running parameter and continuous data of acquisition
Communication module uploads main website.
The radio communication harvester and communication acquisition method for this three-phase intelligent ammeter that the present invention is provided, by wireless
Communication interface modules is connected with three-phase intelligent electric-energy meter and obtains data, and is connected by 4G wireless communication modules with main website, will
Data upload main website or receive the control instruction that main website is issued, therefore the radio communication collection of the three-phase intelligent ammeter of the present invention
Device traffic rate is higher, communication speed faster, and communication reliability more preferably, stability is higher；In addition, the three-phase of the present invention
The radio communication harvester of intelligent electric meter is low in energy consumption, and circuit is simple and reliable.
Brief description of the drawings
Fig. 1 is the functional block diagram of the radio communication harvester of existing three-phase intelligent electric-energy meter.
Fig. 2 is the functional block diagram of the radio communication harvester of the three-phase intelligent ammeter of the present invention.
Fig. 3 is the functional block diagram of the power module of the radio communication harvester of the three-phase intelligent ammeter of the present invention.
Fig. 4 is the circuit theory diagrams of the controller module of the radio communication harvester of the three-phase intelligent ammeter of the present invention
One.
Fig. 5 is the circuit theory diagrams of the controller module of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Two.
Fig. 6 is the circuit theory diagrams of the memory cell of the radio communication harvester of the three-phase intelligent ammeter of the present invention.
Fig. 7 is the functional block diagram of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention.
Fig. 8 is the circuit of the 4G modules of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Schematic diagram.
Fig. 9 is the UART/ serial port powers of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
The circuit theory diagrams one of flat change-over circuit.
Figure 10 is the UART/ serial port powers of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
The circuit theory diagrams two of flat change-over circuit.
Figure 11 is electric for the SIM card interface of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
The circuit theory diagrams on road.
Figure 12 controls for the switching on and shutting down of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
The circuit theory diagrams of circuit.
Figure 13 is the circuit of the Wireless communication interface module of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Schematic diagram.
Figure 14 is the method flow of the communication acquisition method of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Figure.
Embodiment
It is illustrated in figure 2 the functional block diagram of the radio communication harvester of the three-phase intelligent ammeter of the present invention：The present invention
The radio communication harvester of this three-phase intelligent ammeter provided, including power module, Wireless communication interface module, controller
Module, infrared communication module, usb interface module, 4G wireless communication modules, memory cell and RS232 interface circuits；Power module
Electric energy is obtained from three-phase intelligent electric-energy meter and is powered for the radio communication harvester；Wireless communication interface module and three-phase intelligence
Energy electric energy meter connects and obtains the service data and continuous data of three-phase intelligent electric-energy meter；Infrared communication module is used for radio communication
The parameter setting of harvester and reading；Usb interface module is used for the software upgrading of radio communication harvester；Radio communication connects
The data of acquisition are transferred to controller module by mouth mold block, then by 4G wireless communication modules are uploaded to master by controller module
Stand；Memory cell is connected with controller module, for store the running parameter of three-phase intelligent ammeter radio communication harvester with
And the data such as electric flux of collection；RS232 interface circuits are connected with controller module, and RS232 interface circuits are passed through for outside
It is connected and communicates with controller module, completes the system maintenance of the radio communication harvester of three-phase intelligent ammeter.
It is illustrated in figure 3 the functional module of the power module of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Figure：Power module includes battery, battery management unit, 12V/5V power circuits, 5V/3.3V power circuits and 5V/4V power supplys electricity
Road；Three-phase intelligent electric-energy meter exports 12V power supplys and battery is charged by battery management unit, and battery management unit is used for wireless
The battery of communication module is managed；The 12V power supplys of three-phase intelligent electric-energy meter output also pass through 12V/5V power circuits（Using
The circuit that LV13603B chips are constituted）Two-way 5V power supplys are converted to, 5V power supplys pass through 5V/3.3V power circuits all the way（Using
The circuit that LP3981 chips are constituted）Be converted to 3.3V power supplys and powered for controller module, another road 5V power supplys then pass through 5V/4V
Power circuit（The circuit constituted using LP38501 chips）Be converted to 4V power supplys and for 4G wireless communication module power supplies.
The circuit for being illustrated in figure 4 the controller module of the radio communication harvester of the three-phase intelligent ammeter of the present invention is former
Manage figure one；The circuit for being illustrated in figure 5 the controller module of the radio communication harvester of the three-phase intelligent ammeter of the present invention is former
Manage figure two, two the three-phase intelligent ammeter of the invention provided be provided radio communication harvester controller module
Circuit theory diagrams：The controller circuitry that control module is constituted using model LPC1765 controller chip；18th pin of chip
The first crystal oscillating circuit is connected with the 16th pin, the 22nd pin and the 23rd pin connect the second crystal oscillating circuit, and 28 pin of chip are power pins,
3.3V power supplys are directly connected to, and have passed through some groups of filter capacitor ground connection simultaneously；78 pin of chip connect memory cell
It provides clock signal, and 77 pin of chip connect memory cell and as data-out pin, and the 20 pins connection of chip is deposited
Storage unit is as memory protection pin, and output storage protection signal；82 pin and 85 pin of chip are that UART communications connect
Mouthful, 4G modules are connected by UART/ serial port level chance-over circuits, so that giving 4G modules by data carries out wireless transmission, or
Data are obtained from 4G modules；89 pins of chip control the input pin signal of circuit for the switching on and shutting down of 4G wireless communication modules,
It exports control signal all the way and carries out switching on and shutting down operation to the 4G wireless communication modules, so as to close 4G when that need not communicate
Wireless communication module, reduces power consumption；48 and No. 49 pins of chip are serial communication pin, and it passes through Wireless communication interface module
Connection three-phase intelligent electric-energy meter simultaneously obtains the data of three-phase intelligent electric-energy meter, or to sending instructions under three-phase intelligent electric-energy meter.
It is illustrated in figure 6 the circuit theory of the memory cell of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Figure：Controller module is connected by SPI interface with memory, and memory uses SPI FLASH, model W25Q64 storage
Device, memory capacity is 8MB, memory capacity can using PIN to PIN compatible extensions as 32MB and 64MB；1 pin of memory chip connects
Power supply is connect, 2 pin and 5 pin are signal input/output pin, connect controller module, 3 pin of chip draw for protection signal input
Pin, equally connects controller module, and the 4 pin ground connection of chip, 6 pin of chip are connected with controller module and obtain clock signal core
7 pin and 8 pin of piece are then directly connected with power supply.
It is illustrated in figure 7 the function mould of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Block figure：4G wireless communication modules include 4G modules, and be connected with 4G modules UART/ serial port level chance-over circuits, switching on and shutting down control
Circuit processed, SIM card interface circuit and antennal interface and antenna；UART/ serial port level chance-over circuits be used in controller module and
The conversion of communication level is carried out between 4G modules；Switching on and shutting down control circuit is used to receive the switching on and shutting down control that controller module is issued
Signal is simultaneously transferred to 4G modules；SIM card interface circuit is used to read SIM job information and is transferred to 4G modules；4G modules will
The data of the controller module of acquisition are uploaded to main website by way of antennal interface and antenna are communicated with 4G, or receive main website
The data issued are transferred to controller module together.
It is illustrated in figure 8 the 4G modules of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
Circuit theory diagrams：4G modules use model N710 communication module, and antennal interface is by antenna RF _ ANT connecting lines, with position
Number for U2 N710 communication modules 57 pin ANT_MAIN pins connection, antennal interface U1 use SMA aerial heads；The 22 of chip ~
No. 25 pins are that SIM card connects pin, are connected to SIM card interface circuit, obtain the data message of SIM card.
It is the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention as shown in Figure 9 and Figure 10
The circuit theory diagrams of UART/ serial port level chance-over circuits：RXD3 and TXD3 in figure are the UART communication interfaces of controller module,
Connect controller module；BRXD2 and BTXD2 in figure are the serial communication interface of 4G modules；BRXD2 signals pass through three pole all the way
Pipe circuit carries out level conversion, and BTXD2 then carries out level conversion by pull-up resistor and diode circuit.Due to controller mould
The serial ports voltage of block is 3.3V level, and the serial ports level of N7104G modules is 1.8V level, therefore to ensure the positive normal open of serial ports
Letter is, it is necessary to do level shifting circuit, and N710 communication module serial port level chance-over circuits are divided into transtation mission circuit and receiving circuit, sends
Circuit is made up of a triode and two resistance, and triode uses model MMBT4401 triodes, and two resistance are adopted respectively
Use 10K resistance；Receive resistance to be made up of a diode and a resistance, resistance is 4.7K, diode model
LMBR140T1G Schottky diode.
It is the SIM card of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention as shown in figure 11
The circuit theory diagrams of interface circuit：After SIM-6 in figure is sim card socket, reading SIM card signal, pass through electrostatic protection pipe（Type
Number be ESDALC6V1W5）Electrostatic protection is carried out, and passes through capacitance（C12, C13 and C15）After filtering, 4 road signals of output are arrived
4G modules.
Figure 12 controls for the switching on and shutting down of the 4G communication modules of the radio communication harvester of the three-phase intelligent ammeter of the present invention
The circuit theory diagrams of circuit：Switching on and shutting down control circuit is used for the startup and shutdown of microprocessor control 4G communication modules, mainly by 1
Individual triode, two resistance and an electric capacity composition, triode use NPN triode, model MMBT4401, two resistance resistances
Value is respectively 10K and 1K, and capacitor's capacity is 0.01Uf；When controller module needs to shut down 4G modules, it changes OUTPUT
The signal of pin, you can the signal of table ON_OFF pins, so that the shutdown of 4G modules or start.
It is the Wireless communication interface module of the radio communication harvester of the three-phase intelligent ammeter of the present invention as shown in figure 13
Circuit theory diagrams：The radio communication harvester of described three-phase intelligent ammeter passes through Wireless communication interface module and three-phase intelligence
Can table communication, communication mode uses UART serial communications, and wireless communicaltion module access circuit is main by 2XP6 contact pins, TVS pipe, if
Dry triode and resistance capacitance composition, actual circuit 4G wireless communication collection modules pass through UART2 serial ports and three-phase intelligent table
Communication.
It is the side of the communication acquisition method of the radio communication harvester of the three-phase intelligent ammeter of the present invention as shown in figure 14
Method flow chart：The communication acquisition method of the radio communication harvester of the three-phase intelligent electric-energy meter, comprises the following steps：
S1. simultaneously auto dialing logs in main website to the radio communication harvester power-on self-test of three-phase intelligent electric-energy meter；
S2. log in after main website, the control that the radio communication harvester real-time reception main website of three-phase intelligent electric-energy meter is issued refers to
Order；
S3. the main website control instruction of reception is passed through wireless communication interface by the radio communication harvester of three-phase intelligent electric-energy meter
Module issues three-phase intelligent electric-energy meter；
S4. the radio communication harvester of three-phase intelligent electric-energy meter obtains three-phase intelligent electric energy by Wireless communication interface module
The running parameter and continuous data of table；
S5. the radio communication harvester of three-phase intelligent electric-energy meter is wireless by 4G by the running parameter and continuous data of acquisition
Communication module uploads main website.
Claims (9)
1. a kind of radio communication harvester of three-phase intelligent ammeter, including power module, Wireless communication interface module, controller
Module, infrared communication module and usb interface module, it is characterised in that also including 4G wireless communication modules；Power module is from three-phase
Intelligent electric energy meter obtains electric energy and powered for the radio communication harvester；Wireless communication interface module and three-phase intelligent electric energy
Table connects and obtains the service data and continuous data of three-phase intelligent electric-energy meter；Infrared communication module is used for radio communication and gathers dress
The parameter setting put and reading；Usb interface module is used for the software upgrading of radio communication harvester；Wireless communication interface module
The data of acquisition are transferred to controller module, then main website is uploaded to by 4G wireless communication modules by controller module.
2. the radio communication harvester of three-phase intelligent ammeter according to claim 1, it is characterised in that described 4G without
Line communication module includes 4G modules, and UART/ serial port level chance-over circuits, switching on and shutting down control circuit, the SIM being connected with 4G modules
Card interface circuit and antennal interface and antenna；UART/ serial port level chance-over circuits are used between controller module and 4G modules
Carry out the conversion of communication level；Switching on and shutting down control circuit is used to receiving the switch machine control signal that controller module issues and transmitted
Give 4G modules；SIM card interface circuit is used to read SIM job information and is transferred to 4G modules；4G modules are by the control of acquisition
The data of device module are uploaded to main website by way of antennal interface and antenna are communicated with 4G, or receive the data that main website is issued
It is same to be transferred to controller module.
3. the radio communication harvester of three-phase intelligent ammeter according to claim 2, it is characterised in that described 4G moulds
Block is model N710 4G communication modules.
4. the radio communication harvester of the three-phase intelligent ammeter according to one of claim 1 ~ 3, it is characterised in that described
Three-phase intelligent ammeter radio communication harvester also include memory cell；Memory cell is connected with controller module, is used for
Store the running parameter of three-phase intelligent ammeter radio communication harvester and the data of collection.
5. the radio communication harvester of the three-phase intelligent ammeter according to one of claim 1 ~ 3, it is characterised in that described
Three-phase intelligent ammeter radio communication harvester also include RS232 interface circuits；RS232 interface circuits and controller module
Connection, is connected and communicated with controller module by RS232 interface circuits for outside, completes the channel radio of three-phase intelligent ammeter
Believe the system maintenance of harvester.
6. the radio communication harvester of the three-phase intelligent ammeter according to one of claim 1 ~ 3, it is characterised in that described
Controller module be to be made up of the model LPC1765 controller circuitry that constitutes of controller.
7. the radio communication harvester of the three-phase intelligent ammeter according to one of claim 1 ~ 3, it is characterised in that described
Power module include battery, battery management unit, 12V/5V power circuits, 5V/3.3V power circuits and 5V/4V power supplys electricity
Road；Three-phase intelligent electric-energy meter exports 12V power supplys and battery is charged by battery management unit, and battery management unit is used for wireless
The battery of communication module is managed；The 12V power supplys of three-phase intelligent electric-energy meter output are also converted to by 12V/5V power circuits
Two-way 5V power supplys, all the way 5V power supplys 3.3V power supplys are converted to by 5V/3.3V power circuits and powered for controller module, it is another
Road 5V power supplys are then converted to 4V power supplys by 5V/4V power circuits and are 4G wireless communication module power supplies.
8. the radio communication harvester of the three-phase intelligent ammeter according to one of claim 1 ~ 3, it is characterised in that described
Three-phase intelligent ammeter radio communication harvester and three-phase intelligent table connection to be connected by 2XP6 contact pins.
9. the communication collection side of the radio communication harvester of the three-phase intelligent electric-energy meter described in a kind of one of claim 1 ~ 8
Method, comprises the following steps：
S1. simultaneously auto dialing logs in main website to the radio communication harvester power-on self-test of three-phase intelligent electric-energy meter；
S2. log in after main website, the control that the radio communication harvester real-time reception main website of three-phase intelligent electric-energy meter is issued refers to
Order；
S3. the main website control instruction of reception is passed through wireless communication interface by the radio communication harvester of three-phase intelligent electric-energy meter
Module issues three-phase intelligent electric-energy meter；
S4. the radio communication harvester of three-phase intelligent electric-energy meter obtains three-phase intelligent electric energy by Wireless communication interface module
The running parameter and continuous data of table；
S5. the radio communication harvester of three-phase intelligent electric-energy meter is wireless by 4G by the running parameter and continuous data of acquisition
Communication module uploads main website.
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| CN201710389320.4A CN107064622A (en) | 2017-05-27 | 2017-05-27 | The radio communication harvester and communication acquisition method of three-phase intelligent electric-energy meter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107818675A (en) * | 2017-12-07 | 2018-03-20 | 国网重庆市电力公司客户服务中心 | Power information acquisition system and the micro- work(radio communication devices of NB IOT |
| CN109358231A (en) * | 2018-12-24 | 2019-02-19 | 胜利油田恒达电气有限责任公司 | A kind of multifunctional remote communication device and the intelligent electric energy meter with it |
| CN109459596A (en) * | 2019-01-08 | 2019-03-12 | 广东利新科技有限公司 | A kind of three-phase multifunctional electric instrument |
| CN109884360A (en) * | 2019-02-20 | 2019-06-14 | 武汉阿迪克电子股份有限公司 | A kind of single-phase GPRS/4G remote cost control intelligent electric energy meter |
| CN110675613A (en) * | 2019-10-29 | 2020-01-10 | 广东沅朋网络科技有限公司 | Communication method and device between 4G communication module and metering ammeter, computer equipment and storage medium |
| CN110850132A (en) * | 2019-12-19 | 2020-02-28 | 协成科技股份有限公司 | Electric power metering device based on wireless communication |
| CN112230051A (en) * | 2020-08-03 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | Electric energy meter capable of supporting 5G communication |
| CN115314774A (en) * | 2022-08-09 | 2022-11-08 | 郑州三晖电子科技有限公司 | Remote 4G communication module with acquisition function |
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