CN108335476A - Wireless communication collection module, communication acquisition method and its manufactured electric energy meter - Google Patents
Wireless communication collection module, communication acquisition method and its manufactured electric energy meter Download PDFInfo
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- CN108335476A CN108335476A CN201810368125.8A CN201810368125A CN108335476A CN 108335476 A CN108335476 A CN 108335476A CN 201810368125 A CN201810368125 A CN 201810368125A CN 108335476 A CN108335476 A CN 108335476A
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- 238000004891 communication Methods 0.000 title claims abstract description 225
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000153 supplemental effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of wireless communication collection module, including power module, controller module, wireless communication collection module interface, wire communication module and wireless communication module, wireless communication module includes NB IoT wireless communication modules；Power module is powered；Wireless communication collection module interface, which connect with electric energy meter and obtains data, uploads controller module；Wire communication module is used to carry out wire communication and data exchange with the external world；Wireless communication module is used to data sending main website, or receives main website instruction.The invention also discloses the wireless communication acquisition methods of the wireless communication collection module, including initialization；Obtain data reading system instruction；It obtains data and uploads；Itself monitoring.The invention also discloses the electric energy meters including the wireless communication collection module and wireless communication acquisition method.The present invention is of low cost and the occupancy communication resource is less.
Description
Technical field
Present invention relates particularly to a kind of wireless communication collection module, communication acquisition method and its manufactured electric energy meters.
Background technology
With the development and the improvement of people's living standards of national economy, electric energy has become in people's production and life
Essential secondary energy sources bring endless facility to the production and life of people.Meanwhile with the development of the communication technology
With popularizing for automatic technology, the wireless uploading file of data of electric energy meter also has been widely used in electric system meter reading,
Save a large amount of financial resources, material resources and manpower.
Currently, the wireless communication use of electric energy meter is 2G or 4G communication modes.Traditional 2G communications, due to its communication
Speed is slow, the shortcomings of user being received extremely limited, and network operator seldom puts into and safeguards, and 2G communication networks
Network is also faced with the risk of logout.The advantages such as although 4G communications have traffic rate high, and network delay is low, 4G communication modes
The cost is relatively high；And electric energy meter only needs daily in fixed several periods into row data communication, and others are a large amount of
Time, which is in, communicates idle or dormant state, and it is logical that this undoubtedly so that the electric energy meter communicated using 4G occupies a large amount of 4G daily
Believe resource and be not used, to cause the serious waste of the communication resource.
Invention content
One of the objects of the present invention is to provide wireless communication acquisitions a kind of of low cost and that the occupancy communication resource is less
Module.
The second object of the present invention is to provide a kind of communication acquisition method of the wireless communication collection module.
The third object of the present invention is to provide a kind of including the wireless communication collection module and communication acquisition method
Electric energy meter.
This wireless communication collection module provided by the invention, including power module, controller module, wireless communication acquisition
Module interface, wire communication module and wireless communication module, wireless communication module include NB-IoT wireless communication modules；Power supply mould
Block is powered to the wireless communication collection module；Wireless communication collection module interface, wire communication module and wireless communication module
It is connect with controller module；Wireless communication collection module interface is used to connect and obtain with electric energy meter the supplemental characteristic of electric energy meter
And upload controller module；Wire communication module carries out wire communication and data for the wireless communication collection module with extraneous
It exchanges；Wireless communication module is used to the electric energy meter data that the wireless communication collection module acquires externally being sent to main website, or
Person receives the instruction to the wireless communication collection module or electric energy meter of main website transmission.
The power module includes battery, battery management unit, 5V power circuits, 3.3V power circuits, 3.9V power supplys
Circuit and power backup circuit；Output end connection 3.3V power circuits, 3.9V power circuits and the backup power supply of 5V power circuits
Circuit；Power Management Unit is connect with battery；Power module obtains 12V power supplies from electric energy meter and connects 5V power circuits
Input terminal；12V power supplies are converted to 5V power supply signals by 5V power circuits, and give 3.3V power circuits and 3.9V power circuits
Power supply, while being also that power backup circuit powers and stores backup power supply；12V power supplys connect battery by battery management unit,
Battery management unit is for being managed the charging and discharging state of battery.
The controller module includes controller circuitry, memory circuit, clock circuit, power supply supervisory circuit and guards the gate
Dog circuit；Memory circuit, clock circuit, power supply supervisory circuit and watchdog circuit are connect with controller circuitry；Memory
Circuit is used to store the operational data of the wireless communication collection module；When clock circuit provides standard for device circuit in order to control
Clock signal；Power supply supervisory circuit is used for the working power signal of monitoring controller circuit；Watchdog circuit is used in controller electricity
The reset signal for crashing or being provided when abnormal reset controller chip occurs for road.
The NB-IoT wireless communication modules include level shifting circuit, reset control circuit, NB-IoT communication modules,
SIM card interface circuit and antenna；Level shifting circuit, reset control circuit, SIM card interface circuit and antenna are logical with NB-IoT
Believe module connection；Level shifting circuit is used to believe the level of the communication data between NB-IoT communication modules and controller module
It number is converted；Reset control circuit is used to receive the reset signal of the NB-IoT communication modules that controller module is sent out and right
NB-IoT communication modules send out reset signal；SIM card interface circuit is used to provide communication data information to NB-IoT communication modules；
NB-IoT communication modules are externally sent data information by antenna, or receive the external data command sent by antenna.
The level shifting circuit is that 3.3V turns 3V level shifting circuits.
The reset control circuit include reset control switching tube, reset control input pull down resistor, reset control it is defeated
Enter resistance and output filter capacitor；The reset signal that controller module is sent out controls input resistance connection by reset and resets control
The control terminal of switching tube, the control terminal for resetting control switching tube control input pull down resistor ground connection by resetting simultaneously, reset control
Motion end one end of switching tube processed is grounded, and the other end exports the reset signal of NB-IoT communication modules, output filter capacitor connection
Clutter between the motion end other end and ground for resetting control switching tube and in filtering out the reset signal of NB-IoT communication modules
Signal.
The NB-IoT communication modules are the NB-IoT communication modules being made of the communications module of model BC95.
The present invention also provides the communication acquisition methods of the wireless communication collection module, include the following steps：
S1. wireless communication collection module is powered on and is resetted；
S2. wireless communication collection module obtains the data reading system instruction of main website by NB-IoT communication modules；
S3. wireless communication collection module by radio communication module interface obtain electric energy meter data；
S4. the electric energy meter data of acquisition are uploaded main website by wireless communication collection module by NB-IoT communication modules；
S5. wireless communication collection module is in real time monitored itself, ensures that stablizing for communication acquisition carries out.
The present invention also provides a kind of electric energy meter, this kind of electric energy meter includes the wireless communication collection module and communication
Acquisition method.
This wireless communication collection module provided by the invention and communication acquisition method, are constituted using NB-IoT communication modules
Wireless communication collection module data reading system is carried out to electric energy meter and data upload is carried out to main website, cost communicates than existing 4G
Module cost is lower, and the communication resource occupied is less.
Description of the drawings
Fig. 1 is the functional block diagram of existing wireless communication collection module.
Fig. 2 is the functional block diagram of the wireless communication collection module of the present invention.
Fig. 3 is the functional block diagram of the power module of the wireless communication collection module of the present invention.
Fig. 4 is the circuit theory schematic diagram of the memory circuit of the wireless communication collection module of the present invention.
Fig. 5 is the circuit theory schematic diagram of the power supply supervisory circuit of the wireless communication collection module of the present invention.
Fig. 6 is the functional block diagram of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention.
Fig. 7 is the circuit of the level shifting circuit of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Principle schematic.
Fig. 8 is the circuit of the reset control circuit of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Principle schematic.
Fig. 9 is the electricity of the NB-IoT communication modules of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Road principle schematic.
Figure 10 is the electricity of the SIM card interface circuit of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Road principle schematic.
Figure 11 is the method flow diagram of the communication acquisition method of the present invention.
Specific implementation mode
The functional block diagram of the wireless communication collection module of the present invention as shown in Figure 2：This channel radio provided by the invention
Believe acquisition module, including power module, controller module, wireless communication collection module interface, wire communication module and channel radio
Believe module, wireless communication module includes NB-IoT wireless communication modules；Power module is powered to the wireless communication collection module；
Wireless communication collection module interface, wire communication module and wireless communication module are connect with controller module；Wireless communication is adopted
Collection module interface with electric energy meter for connecting and obtaining the supplemental characteristic of electric energy meter and upload controller module；Wire communication module
For the wireless communication collection module wire communication and data exchange are carried out with extraneous；Wireless communication module is used for the nothing
Line communication acquisition module acquisition electric energy meter data be externally sent to main website, or receive main website transmission to the wireless communication
The instruction of acquisition module or electric energy meter.
It is illustrated in figure 3 the functional block diagram of the power module of the wireless communication collection module of the present invention：Power module packet
Include battery, battery management unit, 5V power circuits, 3.3V power circuits, 3.9V power circuits and power backup circuit；5V power supplys
Output end connection 3.3V power circuits, 3.9V power circuits and the power backup circuit of circuit；Power Management Unit connects with battery
It connects；Power module obtains 12V power supplies from electric energy meter and connects the input terminal of 5V power circuits；5V power circuits supply 12V
Power supply is converted to 5V power supply signals, and provides power supply signal to 3.3V power circuits and 3.9V power circuits, while after being also
Stand-by power source circuit powers and stores backup power supply；12V power supply signals connect battery, battery management unit by battery management unit
It is managed for the charging and discharging state to battery；Wherein 5V power circuits are constituted using TPS54339 power management chips；Afterwards
Stand-by power source circuit uses super capacitor；The circuit that 3.3V power circuits are constituted using the power supply chip of LP3981；And 3.9V power supplys
Circuit then uses the circuit that the LDO power supply chips of model TPS7A7001 are constituted.
It is illustrated in figure 4 the circuit theory schematic diagram of the memory circuit of the wireless communication collection module of the present invention：Storage
The circuit that device circuit is constituted using the memory chip of model S25FL064K；1 foot of chip is connected by pull-up resistor R111
Power supply；2 feet of chip are communications pins and connect controller module；3 feet of chip are connected to the output with door chip D22
4 foot of pin；With the model 74LVC1G08 of door chip, 1 foot connects reset signal nRST, and 2 feet connect protection signal FLASH-
PROTECT, when reset signal nRST and protection signal FLASH-PROTECT are high level, memory circuit is
Data is locked, to ensure the safety of circuit data；4 feet of memory chip are grounded, and 5 feet are similarly communications pins and company
It is connected to controller module and communicates, 7 feet of chip are directly connected to positive pole by pull-up resistor and obtain high level signal, core
8 feet of piece are then directly connected to power supply signal and take electricity.
It is illustrated in figure 5 the circuit theory schematic diagram of the power supply supervisory circuit of the wireless communication collection module of the present invention：Electricity
The monitoring chip that the acp chip that source monitors circuit is model TCM809；1 foot of chip is directly grounded, and the output of 2 feet resets letter
Number nRST, while 2 feet are also by pull-up resistor R24 connection power supply signals, to ensure that the reset is believed when power supply works normally
Number pin is high level, and the pin can just export the effective reset signal of low level when power supply signal occurs abnormal；Chip
3 feet be then directly connected to power supply signal, for take electricity and obtain original power signal.
It is illustrated in figure 6 the functional block diagram of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention：
NB-IoT wireless communication modules include level shifting circuit, reset control circuit, NB-IoT communication modules, SIM card interface circuit
And antenna；Level shifting circuit, reset control circuit, SIM card interface circuit and antenna are connect with NB-IoT communication modules；Electricity
Flat conversion circuit is for converting the level signal of the communication data between NB-IoT communication modules and controller module；It is multiple
Position control circuit is for receiving the reset signal for the NB-IoT communication modules that controller module is sent out and to NB-IoT communication modules
Send out reset signal；SIM card interface circuit is used to provide communication data information to NB-IoT communication modules；NB-IoT communication modules
Data information is externally sent by antenna, or the external data command sent is received by antenna.
It is illustrated in figure 7 the level shifting circuit of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Circuit theory schematic diagram：NB-IoT wireless communication modules are actually communicated by UART serial ports with micro controller, due to microcontroller
Serial ports voltage is 3.3V level, and BC95 communication module serial ports level is 3.0V level, therefore, in order to ensure that serial ports normal communication, needs
Level shifting circuit is done, BC95 communication module serial port level chance-over circuits are divided into transmission circuit and receiving circuit；Left side in figure
Circuit be signal sending circuit level shifting circuit, wherein TXD3 level controllers module output level signal, output
3.3V signals divided by resistance R55 and R59 after, the voltage on resistance R59 is reduced to 3.0V and is thus connected to NB-IoT
In wireless communication module；And the circuit on right side is then signal receiving circuit in figure, by NB-IoT wireless communication modules and control
Device module directly passes through resistance R56 connections.
It is illustrated in figure 8 the reset control circuit of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
Circuit theory schematic diagram：Reset control circuit controls NB-IoT radio communication mold block resets for controller module；Reset control
Circuit processed includes resetting control switching tube V1100, resetting control input pull down resistor R1101, reset control input resistance R1100
With output filter capacitor C1100；The reset signal that controller module is sent out controls input resistance connection by reset and resets control
The control terminal of switching tube, the control terminal for resetting control switching tube control input pull down resistor ground connection by resetting simultaneously, reset control
Motion end one end of switching tube processed is grounded, and the other end exports the reset signal of NB-IoT communication modules, output filter capacitor connection
Clutter between the motion end other end and ground for resetting control switching tube and in filtering out the reset signal of NB-IoT communication modules
Signal.
It is illustrated in figure 9 the NB-IoT communication moulds of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
The circuit theory schematic diagram of block：NB-IoT wireless communication modules use the communication module of model BC95, antennal interface U1 to pass through
Antenna RF _ ANT connecting lines is connect with 53 foot ANT_MAIN pins of the BC95 communication modules that position number is D1, and antennal interface U1 is adopted
With SMA aerial heads；3 feet and 4 feet of BC95 communication modules connect with controller module and obtain data and clock signal；Module
15 feet then connect reset control circuit and obtain the reset signal of controller module output；29 and 30 feet of module are turned by level
It changes circuit connection controller module and is communicated；38~41 feet of module then connect SIM card interface circuit and obtain SIM card number
It is believed that ceasing and being communicated.
It is as shown in Figure 10 the SIM card interface electricity of the NB-IoT wireless communication modules of the wireless communication collection module of the present invention
The circuit theory schematic diagram on road：SIM card interface circuit is mainly by 1 SIM card holder XS3,1 electrostatic protector (D5, model
ESDA6V1W5 it) is formed with several resistance, capacitance；SIM card holder is for fixing SIM card, using 6PIN connectors, model A1-
184S06W2WT-1R7；EMC of the electrostatic protection pipe for SIM card signal is protected, model ESDALC6V1W5；Wherein capacitance
C12, C13, C15 and C43 are used to signal filtering, and resistance R126~R128 is then serially connected with the protection that circuit is used in circuit.
It is as shown in figure 11 the method flow diagram of the communication acquisition method of the present invention：This wireless communication provided by the invention
The communication acquisition method of acquisition module, includes the following steps：
S1. wireless communication collection module is powered on and is resetted；
S2. wireless communication collection module obtains the data reading system instruction of main website by NB-IoT communication modules；
S3. wireless communication collection module by radio communication module interface obtain electric energy meter data；
S4. the electric energy meter data of acquisition are uploaded main website by wireless communication collection module by NB-IoT communication modules；
S5. wireless communication collection module is in real time monitored itself, ensures that stablizing for communication acquisition carries out.
This wireless communication collection module provided by the present application and communication acquisition method can be used for other any need and carry out
The electronic equipment of wireless communication acquisition, including all types of measuring instrument (such as electric energy meter, water meter, gas meter, flow meter, calorimeter etc.),
Electric energy management terminal, distribution terminal, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator, data are adopted
Storage, measuring instrument, write by hand device, fault detector etc..
Claims (9)
1. a kind of wireless communication collection module, including it is power module, controller module, wireless communication collection module interface, wired
Communication module and wireless communication module, it is characterised in that wireless communication module includes NB-IoT wireless communication modules；Power module
It powers to the wireless communication collection module；Wireless communication collection module interface, wire communication module and wireless communication module are equal
It is connect with controller module；Wireless communication collection module interface with electric energy meter for connecting and obtaining the supplemental characteristic of electric energy meter simultaneously
Upload controller module；Wire communication module carries out wire communication and data friendship for the wireless communication collection module with extraneous
It changes；Wireless communication module is used to the electric energy meter data that the wireless communication collection module acquires externally being sent to main website, or
Receive the instruction to the wireless communication collection module or electric energy meter of main website transmission.
2. wireless communication collection module according to claim 1, it is characterised in that the power module includes battery, electricity
Pond administrative unit, 5V power circuits, 3.3V power circuits, 3.9V power circuits and power backup circuit；5V power circuits it is defeated
Outlet connects 3.3V power circuits, 3.9V power circuits and power backup circuit；Power Management Unit is connect with battery；Power supply mould
Block obtains 12V power supplies from electric energy meter and connects the input terminal of 5V power circuits；5V power circuits convert 12V power supplies
It for 5V power supply signals, and powers to 3.3V power circuits and 3.9V power circuits, while being also that power backup circuit is powered and stored up
Deposit backup power supply；12V power supplies connect battery by battery management unit, and battery management unit is for the charge and discharge to battery
State is managed.
3. wireless communication collection module according to claim 1, it is characterised in that the controller module includes control
Device circuit, memory circuit, clock circuit, power supply supervisory circuit and watchdog circuit；Memory circuit, clock circuit, power supply
Monitoring circuit and watchdog circuit are connect with controller circuitry；Memory circuit is for storing the wireless communication collection module
Operational data；Clock circuit provides standard clock signal for device circuit in order to control；Power supply supervisory circuit is controlled for monitoring
The working power signal of device circuit；Watchdog circuit is used to provide reset controller when crash or exception occur for controller circuitry
The reset signal of chip.
4. the wireless communication collection module according to one of claims 1 to 3, it is characterised in that the NB-IoT channel radios
Believe that module includes level shifting circuit, reset control circuit, NB-IoT communication modules, SIM card interface circuit and antenna；Level turns
Circuit, reset control circuit, SIM card interface circuit and antenna is changed to connect with NB-IoT communication modules；Level shifting circuit is used
It is converted in by the level signal of the communication data between NB-IoT communication modules and controller module；Reset control circuit is used
In the reset signal for receiving the NB-IoT communication modules that controller module is sent out and reset signal is sent out to NB-IoT communication modules；
SIM card interface circuit is used to provide communication data information to NB-IoT communication modules；NB-IoT communication modules will be counted by antenna
It is believed that breath is externally sent, or the external data command sent is received by antenna.
5. wireless communication collection module according to claim 4, it is characterised in that the level shifting circuit is 3.3V
Turn 3V level shifting circuits.
6. wireless communication collection module according to claim 4, it is characterised in that the reset control circuit includes multiple
Control switching tube in position resets control input pull down resistor, resets control input resistance and output filter capacitor；Controller module is sent out
The reset signal gone out controls the control terminal that input resistance connection resets control switching tube by reset, resets the control of control switching tube
End processed controls input pull down resistor ground connection by resetting simultaneously, resets motion end one end ground connection of control switching tube, and the other end is defeated
Go out the reset signal of NB-IoT communication modules, output filter capacitor is connected to the motion end other end and ground for resetting control switching tube
Between and filter out the noise signal in the reset signals of NB-IoT communication modules.
7. wireless communication collection module according to claim 4, it is characterised in that the NB-IoT communication modules are served as reasons
The NB-IoT communication modules that the communication module of model BC95 is constituted.
8. the communication acquisition method of the wireless communication collection module described in a kind of one of claim 1~7, it is characterised in that including
Following steps：
S1. wireless communication collection module is powered on and is resetted；
S2. wireless communication collection module obtains the data reading system instruction of main website by NB-IoT communication modules；
S3. wireless communication collection module by radio communication module interface obtain electric energy meter data；
S4. the electric energy meter data of acquisition are uploaded main website by wireless communication collection module by NB-IoT communication modules；
S5. wireless communication collection module is in real time monitored itself, ensures that stablizing for communication acquisition carries out.
9. a kind of electric energy meter, it is characterised in that including described in one of claim 1~7 wireless communication collection module and right want
Seek the communication acquisition method described in 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368125.8A CN108335476A (en) | 2018-04-23 | 2018-04-23 | Wireless communication collection module, communication acquisition method and its manufactured electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368125.8A CN108335476A (en) | 2018-04-23 | 2018-04-23 | Wireless communication collection module, communication acquisition method and its manufactured electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108335476A true CN108335476A (en) | 2018-07-27 |
Family
ID=62933677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810368125.8A Pending CN108335476A (en) | 2018-04-23 | 2018-04-23 | Wireless communication collection module, communication acquisition method and its manufactured electric energy meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN108335476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215323A (en) * | 2018-11-15 | 2019-01-15 | 威胜信息技术股份有限公司 | Novel wireless communication acquisition module and its wireless communication acquisition method |
| CN112070380A (en) * | 2020-08-28 | 2020-12-11 | 广东电网有限责任公司 | Power utilization inspection management system based on NB-IoT and control method |
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| CN206710506U (en) * | 2017-05-27 | 2017-12-05 | 湖南威胜信息技术有限公司 | The radio communication harvester of three-phase intelligent electric-energy meter |
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| CN208061420U (en) * | 2018-04-23 | 2018-11-06 | 威胜信息技术股份有限公司 | Wireless communication collection module and its manufactured electric energy meter |
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| CN105927527A (en) * | 2016-06-20 | 2016-09-07 | 湖南睿胜能效管理技术有限公司 | Operating state monitoring and data acquisition device for water pump |
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| CN109215323A (en) * | 2018-11-15 | 2019-01-15 | 威胜信息技术股份有限公司 | Novel wireless communication acquisition module and its wireless communication acquisition method |
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