CN206930710U - Hydroelectric power plant's modular multichannel remote power metering device - Google Patents
Hydroelectric power plant's modular multichannel remote power metering device Download PDFInfo
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- CN206930710U CN206930710U CN201720629541.XU CN201720629541U CN206930710U CN 206930710 U CN206930710 U CN 206930710U CN 201720629541 U CN201720629541 U CN 201720629541U CN 206930710 U CN206930710 U CN 206930710U
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Abstract
The utility model provides a kind of hydroelectric power plant's modular multichannel remote power metering device, and described device includes a host CPU module, a main power source power supply module, a communication interface with pc, a CDMA 2G wireless communication modules, a network central server and an at least electric energy metering module；The host CPU module, CDMA 2G wireless communication modules and each electric energy metering module are connected with main power source power supply module；The communication interface with pc, CDMA 2G wireless communication modules and each electric energy metering module are connected with institute host CPU module, and the CDMA 2G wireless communication modules are connected with network central server.The utility model advantage：The parameter measurement of more units can be supported simultaneously, and be used uniformly a MCU and be managed, while can effectively ensure that the relatively independent of modules work, and improve the reliability of whole device work.
Description
Technical field
Electric and electronic technical field is the utility model is related to, refers in particular to a kind of hydroelectric power plant's modular multichannel remote power meter
Device is measured, is measured suitable for various hydraulic power plant's three-phase three-wire system 100V or 380V electrical measurement parameters remote.
Background technology
Hydroelectric power plant's modular multichannel remote power metering device, is mainly used in hydroelectric power plant's remote automation TT＆C system
In, the major function of device be by hydroelectric power plant generating set information (three-phase voltage, three-phase current, three-phase are active, three-phase without
The parameters such as work(, power factor (PF), frequency, active positive electronegativity, idle positive electronegativity) transmitted by wireless telecommunication (CDMA2G)
To central server, data processing and storage are carried out by server software system；Terminal user can be networked by computer or hand
Machine APP enters row information access at any time.Realized in the past this remote power and its parameter measurement main hardware include digital electric meter,
Intelligent controller (PLC), Wireless Data Transmission Terminal (DTU), but this mode is only suitable for applying in small lot power plant, actual big
Batch there are following problem in promoting：
1st, for the power plant with more generating sets, it is single that every unit has been required for corresponding digital electric meter to carry out
Only parameter measurement, to ensure the reliability of plant running, typically all use the more reliable digital electric meter of performance, this numeral electricity
The monomer cost of table is higher, and it is higher so to result in equipment holistic cost；
2nd, device integration is not high, and equipment overall volume is larger, causes to install and transports inconvenience；
3rd, device installation cost is higher, it is necessary to there is the engineering staff of certain professional knowledge and installation experience to be constructed and entered
Row field adjustable；
4th, more generating set electric probe device productions and assembling test are more troublesome, and debugging and back panel wiring are complex,
Production efficiency of equipment is relatively low.
The content of the invention
The technical problems to be solved in the utility model, it is to provide a kind of hydroelectric power plant's modular multichannel remote power metering
Device, is realized while is supported the parameter measurement of more units by the device, and is used uniformly a MCU and is managed, together
When can effectively ensure that modules work it is relatively independent, and improve whole device work reliability.
What the utility model was realized in：Hydroelectric power plant's modular multichannel remote power metering device, described device bag
Include a host CPU module, a main power source power supply module, a communication interface with pc, a CDMA 2G wireless communication modules, a network
Central server and at least an electric energy metering module；The host CPU module, CDMA 2G wireless communication modules and each electric energy
Metering module is connected with the main power source power supply module；The communication interface with pc, CDMA 2G wireless communication modules and
Each electric energy metering module is connected with the host CPU module, and the CDMA 2G wireless communication modules service with the network center
Device connects.
Further, the quantity of the electric energy metering module is 1~3.
Further, the host CPU module includes a main MCU, a clock RTC circuit, a host CPU power supply circuit, at a glance
Door dog circuit, a JTAG debugging circuit and a storage circuit；The clock RTC circuit, host CPU power supply circuit, house dog electricity
Road, JTAG debugging circuit and storage circuit are connected with the main MCU.
Further, the CDMA 2G wireless communication modules include a wireless module MC323, power supply overvoltage protection electricity
Road, a wireless module power supply circuit and power supply low-power consumption management circuit；The network central server and the wireless mould
Block MC323 connections, the wireless module MC323 are connected with the power supply overvoltage protection circuit, the power supply overvoltage protection circuit
It is connected with the wireless module power supply circuit, the wireless module power supply circuit is connected with power supply low-power consumption management circuit.
Further, the main power source power supply module include a voltage surge protection circuit, a main power supply module, one open into
Digital output circuit, power panel LED instruction output circuits and two-way band isolation RS 485 external communication circuit；The voltage surge
Protection circuit is connected with the main power supply module, and the main power supply module is connected with the input and output circuit.
Further, the input and output circuit includes input and output isolation power supply circuit, outputs output circuit all the way
And three tunnel open into input circuit；It is described output opened described in output circuit and three tunnels into input circuit with the input and output every
Connected from power supply circuit.
Further, the power panel LED instructions output circuit includes normal operation output indication LED circuit, main power supply
Power supply instruction LED circuit, the normal indication LED circuit of wireless telecommunications, RS485 communication indication LED circuits or Big Dipper communication instruction
LED circuit.
Further, the electric energy metering module is galvanically isolated sample circuit, one including voltage isolation sample circuit, one
Electrical power isolation power supply circuit, an electric energy measurement master chip, a SPI communication isolation circuits and LED instruction output circuits；
Voltage isolation sample circuit, be galvanically isolated sample circuit, electrical power isolation power supply circuit, SPI communication isolation circuits with
And LED instruction output circuits are connected with the electric energy measurement master chip.
Further, it is mutual to include two-way control source protection circuit, two-way voltage acquisition for the voltage isolation sample circuit
Sensor and the low-pass filter circuit of two-way first；Control source protection circuit described in two-way and voltage acquisition transformer described in two-way
Connection, voltage acquisition transformer described in two-way are connected with the first low-pass filter circuit described in two-way；
Being galvanically isolated sample circuit includes two-way current acquisition transformer and the low-pass filter circuit of two-way second；Two-way institute
Current acquisition transformer is stated to be connected with the second low-pass filter circuit described in two-way.
Further, the LED instructions output circuit includes Voltage unbalance indication LED circuit, current imbalance indicates
LED circuit, phase sequence mistake indication LED circuit, metering output indication LED circuit or metering power supply power supply indication LED circuit.
The utility model has the advantages that：
1st, hardware cost is low, is easy to high-volume to promote the use of；
2nd, small volume, it is easy to project installation and logistics transportation；
3rd, there is voltage circuit line sequence wrong and electric current wrong diagnostic function, possess the uneven diagnosis work(of voltage and current
Can, facilitate field engineering personnel to install and debug；
4th, network central server and host computer calibration debugging software can be coordinated, equipment is managed collectively and given birth to
Production；
5th, using modularized design, the electric parameter measurement of the corresponding generating set of an electric energy metering module, a dress
Putting at most can support the parameter measurement of three units simultaneously, and is used uniformly a MCU and is managed.
6th, using paster and high density integrated circuit, inside is not required to carry out wiring processing, device can be facilitated to produce in enormous quantities；
7th, used using full isolation processing technology, the power supply of each electric energy metering module and CPU power supply
The SPI communication interfaces of isolation power supply module, host CPU module and electric energy metering module use isolating interface mode, each electric energy meter
Measure the input of module simulation amount using voltage or current transformer to isolate, device external communication interface, can using communication isolating interface
The relatively independent of modules work is effectively ensured, improves the reliability of device work.
Brief description of the drawings
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the schematic device that the utility model realizes the metering of single channel remote power.
Fig. 2 is the schematic device that the utility model realizes the metering of binary channels remote power.
Fig. 3 is the schematic device that the utility model realizes the metering of triple channel remote power.
Fig. 4 is the hardware block diagram of the utility model electric power meter.
Fig. 5 is the theory diagram of input and output circuit in the utility model.
Fig. 6 is the theory diagram that power panel LED indicates output circuit in the utility model.
Fig. 7 is the external wiring diagram of electric energy metering module in the utility model.
Embodiment
Refer to shown in Fig. 1 to Fig. 7, the utility model hydroelectric power plant modular multichannel remote power metering device 100, institute
Stating device includes a host CPU module 1, a main power source power supply module 2, a communication interface with pc 3, a CDMA 2G wireless telecommunications
Module 4, a network central server 5 and an at least electric energy metering module 6；The host CPU module 1, CDMA 2G wireless telecommunications
Module 2 and each electric energy metering module 6 are connected with the main power source power supply module 2；The communication interface with pc 3, CDMA
2G wireless communication modules 4 and each electric energy metering module 6 are connected with the host CPU module 1, the CDMA 2G wireless telecommunications
Module 2 is connected with the network central server 5.
The utility model electric power meter at work, can pass through host computer by the calibration debugging software of host computer 7
Communication interface 3 is debugged (including calibration, parameter setting, parameter testing etc.) to whole electric power meter 100.Electric energy meter
Amount module 6 is used for the electrical measurement parameter for measuring generating set (not shown), and sends the electrical measurement parameter measured to host CPU module 1；
Host CPU module 1 can obtain electrical measurement data by way of poll, and electrical measurement data are handled and preserved, while set
The electrical measurement data handled well are sent to network central server by CDMA 2G wireless communication modules 4 in fixed communication time
5；Network central server 5 can be further processed and deposit to the electrical measurement data of correlation after the electrical measurement data of correlation are received
Storage, such terminal user's can are entered row information by internet nets or cell phone application and consulted at any time.
The quantity of the electric energy metering module 6 is 1~3.In the specific implementation, if being provided with 1 electric energy metrical mould
Block 6, then it can carry out single channel remote power metering (as shown in Figure 1), you can survey with the parameter to a generating set
Amount；If being provided with 2 electric energy metering modules 6, binary channels remote power metering (as shown in Figure 2) can be carried out, you can with
The parameter of two generating sets is measured simultaneously；If being provided with 3 electric energy metering modules 6, triple channel can be carried out
Remote power measures (as shown in Figure 3), you can be measured to the parameter of three generating sets simultaneously.
Please be shown in emphasis reference picture 4, the host CPU module 1 includes a main MCU11, a clock RTC circuit 12, a host CPU
Power supply circuit 13, a watchdog circuit 14, a JTAG debugging circuit 15 and a storage circuit 16；The clock RTC circuit 12,
Host CPU power supply circuit 13, watchdog circuit 14, JTAG debugging circuit 15 and storage circuit 16 are connected with the main MCU11
Connect.Wherein, the clock RTC circuit 12 is used to provide timer clock；The main MCU11 is used to carry out initialization process and reading
Parameter is surveyed in power taking, and carries out the data after Correlation method for data processing and storage processing；The host CPU power supply circuit 13 is used for the master
CPU module 1 is individually powered；The watchdog circuit 14 is used to prevent host CPU module 1 from deadlock situation occur；The JTAG
Debug circuit 15 is used to use when debugging；The storage circuit 16 is used for storage configuration parameter etc..
The CDMA 2G wireless communication modules 4 include the power supply overvoltage protection circuit 42 of a wireless module (MC323) 41, one,
One wireless module power supply circuit 43 and power supply low-power consumption management circuit 44；The network central server 5 with it is described wireless
Module (MC323) 41 connects, and the wireless module (MC323) 41 is connected with the power supply overvoltage protection circuit 42, the power supply
Overvoltage crowbar 42 is connected with the wireless module power supply circuit 43, and the wireless module power supply circuit 43 is low with the power supply
Power consumption management circuit 44 connects.Wherein, the wireless module (MC323) 41 is used to transfer data to network central server 5；
The power supply overvoltage protection circuit 42 is used to prevent the CDMA 2G wireless communication modules 4 from over-voltage condition occur；The wireless mould
Block power supply circuit 43 is used to individually power to the CDMA2G wireless communication modules 4；The power supply low-power consumption manages circuit 44
For controlling whether turn-on data transmission-receiving function, when needing to send data, control wireless module power supply circuit 43 is supplied
Electricity, when there is no need to send data, just wireless module power supply circuit 43 is controlled to suspend power supply, to reduce overall power.
The main power source power supply module 2 is opened including a voltage surge protection circuit 21, a main power supply module AC/DC22, one
Enter digital output circuit 23, power panel LED instruction output circuits 24 and two-way band isolation RS 485 external communication circuit 25；It is described
Voltage surge protection circuit 21 is connected with the main power supply module AC/DC22, the main power supply module AC/DC22 with it is described open into
Digital output circuit 23 connects.Wherein, the voltage surge protection circuit 21 is used to prevent from damaging equipment because power network overvoltage occurs；
The main power supply module AC/DC22 is used to provide power supply to whole electric power meter 100；It is logical outside the band isolation RS 485
Circuit 25 is interrogated to be used to realize the connecting communication with the grade peripheral apparatus of host computer 7.
Please be shown in emphasis reference picture 5, the input and output circuit 23 includes input and output isolation power supply circuit 231, one
Output the tunnel of output circuit 232 and three and open into input circuit 233 in road；The output circuit 232 of outputing described in three tunnels with opening into defeated
Enter circuit 233 and isolate power supply circuit 231 with the input and output to connect.Wherein, the input and output isolation power supply circuit 231
For individually being powered to the input and output circuit 23；The output circuit 232 of outputing is used to control on/off function；It is described
Open and be used to read open/close state into input circuit 233.
Please be shown in emphasis reference picture 6, the power panel LED instructions output circuit 24 includes normal operation output indication LED
Circuit 241 (be used for indicate running status), main electricity indication LED circuit 242 (being used for the state for indicating main electricity),
The normal indication LED circuit 243 of wireless telecommunications (being used to indicate wireless communication state), RS485 communication indication LEDs circuit 244 (are used for
Indicate the state of RS485 communications) or Big Dipper communication indication LED circuit 245 (being used for the state for indicating Big Dipper communication).
The electric energy metering module 6 includes voltage isolation sample circuit 61, one and is galvanically isolated sample circuit 62, an electric energy
Isolated from power power supply circuit 63, the SPI communication isolation circuits 65 of an electric energy measurement master chip (RN7302) 64, one and a LED refer to
Show output circuit 66；The voltage isolation sample circuit 61, it is galvanically isolated sample circuit 62, electrical power isolation power supply circuit
63rd, SPI communication isolation circuits 65 and LED instruction output circuits 66 connect with the electric energy measurement master chip (RN7302) 64
Connect.Wherein, the voltage isolation sample circuit 61 is used to carry out isolation sampling to the power supply of generating set；Described be galvanically isolated is adopted
Sample circuit 62 is used to carry out isolation sampling to the electric current of generating set；The electrical power isolation power supply circuit 63 is used for the electricity
Energy metering module 6 is individually powered；The electric energy measurement master chip (RN7302) 64 is used for related electric degree and electrical measurement parameter
The operation such as measure；The SPI communication isolation circuits 65 realize communication isolation.
Please be shown in emphasis reference picture 7, because electric power meter 100 of the present utility model is applied to the electricity of three-phase three-wire system
Can and electrical measurement parameter measurement, therefore, each electric energy metering module 6 in wiring, it is necessary to access A, B, C three-phase voltages and A, C
Biphase current, and B phase currents do not access.
The voltage isolation sample circuit 61 includes two-way control source protection circuit 611, two-way voltage acquisition transformer
612 and the first low-pass filter circuit of two-way 613；Control source protection circuit 611 described in two-way and voltage acquisition described in two-way
Transformer 612 is connected, and voltage acquisition transformer 612 described in two-way is connected with the first low-pass filter circuit 613 described in two-way；Its
In, the control source protection circuit 611 is used to prevent overvoltage；The voltage acquisition transformer 612 is used for collection
Voltage carry out linear change (high voltage linear of collection is changed into low-voltage)；First low-pass filter circuit 613 is used for
Filter the interference signal to voltage.
Being galvanically isolated sample circuit 62 includes two-way current acquisition transformer 621 and the low-pass filter circuit of two-way second
622；Current acquisition transformer 621 described in two-way is connected with the second low-pass filter circuit 622 described in two-way.Wherein, the electric current
Transformer 621 is gathered to be used to carry out linear change to the electric current of collection (high current of collection is linearly changed into low current)；It is described
Second low-pass filter circuit 622 is used to filter the interference signal to electric current.
The LED instructions output circuit 66 includes Voltage unbalance indication LED circuit 661 and (it is uneven to be used for instructed voltage
State), current imbalance indication LED circuit 662 (being used for indicator current non-equilibrium state), phase sequence mistake indication LED circuit 663
(being used to indicate phase sequence error condition), metering output indication LED circuit 664 (being used to indicate metering output state) or metering electricity
Source power supply indication LED circuit 665 (is used to indicate metering power supply power supply state).
Operation principle of the present utility model is as follows：
Illustrated with the realization principle of single channel remote power metering：In process of production, commissioning staff mainly may be used
With by standard correction platform come simulation input normal data, and the communication interface with pc and host computer for passing through electric power meter
Calibration debugging software carry out calibration and parameter setting, main MCU can store calibration and the parameter of other settings, to complete calibration
With the debugging efforts of basic parameter.In normal operation, it can be read after main MCU starts and related parameter is set, and electric energy is surveyed
Measure master chip RN7302 and carry out initialization process；The voltage and current analog signalses of generating set output, can pass through voltage/electricity
Stream collection transformer (400V low-tension units do not need voltage acquisition transformer, can be directly inputted in electric power meter),
Specific wiring by the binding post on electric power meter as shown in fig. 7, be input in electric energy metering module, in electric energy metrical
Inside modules, analog signalses by voltage acquisition transformer and current acquisition transformer and after filtering after, electricity can be input to
The measurement that master chip RN7302 carries out related electric degree and electrical measurement parameter can be measured, while main MCU can read electric energy measurement master chip
RN7302 register value, and the data after Correlation method for data processing and storage processing are carried out, then control CDMA2G wireless
Communication module carries out data link processing, and data are sent to network by wireless communication mode in the communication time of setting
Central server, network central server receive related electrical measurement data and carry out data processing and storage, such terminal user
Can is entered row information by internet nets or cell phone application and consulted at any time.
For the realization principle and single channel remote power of the metering of binary channels remote power and the metering of triple channel remote power
The realization principle of metering is essentially identical, and the place of main difference is：When main MCU determined by hardware circuit it is more than one
After electric energy metering module above, main MCU can be polled processing to the data of each electric energy metering module, while in master
The group bag that multiple channel datas are added on MCU and the communication data of network central server is handled.
In a word, the utility model has the advantages that：
1st, hardware cost is low, is easy to high-volume to promote the use of；
2nd, small volume, it is easy to project installation and logistics transportation；
3rd, there is voltage circuit line sequence wrong and electric current wrong diagnostic function, possess the uneven diagnosis work(of voltage and current
Can, facilitate field engineering personnel to install and debug；
4th, network central server and host computer calibration debugging software can be coordinated, equipment is managed collectively and given birth to
Production；
5th, using modularized design, the electric parameter measurement of the corresponding generating set of an electric energy metering module, a dress
Putting at most can support the parameter measurement of three units simultaneously, and is used uniformly a MCU and is managed.
6th, using paster and high density integrated circuit, inside is not required to carry out wiring processing, device can be facilitated to produce in enormous quantities；
7th, used using full isolation processing technology, the power supply of each electric energy metering module and CPU power supply
The SPI communication interfaces of isolation power supply module, host CPU module and electric energy metering module use isolating interface mode, each electric energy meter
Measure the input of module simulation amount using voltage or current transformer to isolate, device external communication interface, can using communication isolating interface
The relatively independent of modules work is effectively ensured, improves the reliability of device work.
Although the foregoing describing specific embodiment of the present utility model, those familiar with the art should
Work as understanding, the specific embodiment described by us is merely exemplary, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art should in the equivalent modification and change made according to spirit of the present utility model
Cover in scope of the claimed protection of the present utility model.
Claims (10)
- A kind of 1. hydroelectric power plant's modular multichannel remote power metering device, it is characterised in that：Described device includes a host CPU mould Block, a main power source power supply module, a communication interface with pc, a CDMA2G wireless communication modules, a network central server with An and at least electric energy metering module；The host CPU module, CDMA 2G wireless communication modules and each electric energy metering module with The main power source power supply module connection；The communication interface with pc, CDMA 2G wireless communication modules and each electric energy metrical mould Block is connected with the host CPU module, and the CDMA 2G wireless communication modules are connected with the network central server.
- 2. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The electric energy The quantity of metering module is 1~3.
- 3. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The master CPU module includes a main MCU, a clock RTC circuit, a host CPU power supply circuit, a watchdog circuit, a JTAG debugging circuit An and storage circuit；The clock RTC circuit, host CPU power supply circuit, watchdog circuit, JTAG debugging circuit and storage Circuit is connected with the main MCU.
- 4. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The CDMA 2G wireless communication modules include a wireless module MC323, a power supply overvoltage protection circuit, a wireless module power supply circuit and one Power supply low-power consumption manages circuit；The network central server is connected with the wireless module MC323, the wireless module MC323 is connected with the power supply overvoltage protection circuit, and the power supply overvoltage protection circuit connects with the wireless module power supply circuit Connect, the wireless module power supply circuit is connected with power supply low-power consumption management circuit.
- 5. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The main electricity Source power supply module includes a voltage surge protection circuit, a main power supply module, an input and output circuit, power panel LED instructions Output circuit and two-way band isolation RS 485 external communication circuit；The voltage surge protection circuit and the main power supply module Connection, the main power supply module are connected with the input and output circuit.
- 6. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 5, it is characterised in that：It is described open into Digital output circuit includes input and output isolation power supply circuit, outputs output circuit all the way and three tunnels are opened into input circuit；It is described Output output circuit and isolate power supply circuit connection with the input and output into input circuit with being opened described in three tunnels.
- 7. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The power supply Plate LED instruction output circuits are including normal operation output indication LED circuit, main electricity indication LED circuit, wireless telecommunications just Normal indication LED circuit, RS485 communication indication LED circuits or Big Dipper communication indication LED circuit.
- 8. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 1, it is characterised in that：The electric energy Metering module is galvanically isolated sample circuit, electrical power isolation power supply circuit, an electricity including voltage isolation sample circuit, one Master chip, a SPI communication isolation circuits and LED instruction output circuits can be measured；The voltage isolation sample circuit, electric current Isolate sample circuit, electrical power isolation power supply circuit, SPI communication isolation circuits and LED instruction output circuit with it is described Electric energy measurement master chip connects.
- 9. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 8, it is characterised in that：The voltage Isolating sample circuit includes two-way control source protection circuit, two-way voltage acquisition transformer and the LPF of two-way first electricity Road；Control source protection circuit described in two-way is connected with voltage acquisition transformer described in two-way, voltage acquisition mutual inductance described in two-way Device is connected with the first low-pass filter circuit described in two-way；Being galvanically isolated sample circuit includes two-way current acquisition transformer and the low-pass filter circuit of two-way second；It is electric described in two-way Stream collection transformer is connected with the second low-pass filter circuit described in two-way.
- 10. modular multichannel remote power metering device in hydroelectric power plant's as claimed in claim 8, it is characterised in that：The LED Indicate that output circuit includes Voltage unbalance indication LED circuit, current imbalance indication LED circuit, phase sequence mistake indication LED electricity Road, metering output indication LED circuit or metering power supply power supply indication LED circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720629541.XU CN206930710U (en) | 2017-06-02 | 2017-06-02 | Hydroelectric power plant's modular multichannel remote power metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720629541.XU CN206930710U (en) | 2017-06-02 | 2017-06-02 | Hydroelectric power plant's modular multichannel remote power metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206930710U true CN206930710U (en) | 2018-01-26 |
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ID=61344871
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|---|---|---|---|
| CN201720629541.XU Active CN206930710U (en) | 2017-06-02 | 2017-06-02 | Hydroelectric power plant's modular multichannel remote power metering device |
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| CN (1) | CN206930710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187171A (en) * | 2019-06-25 | 2019-08-30 | 武汉阿迪克电子股份有限公司 | A kind of the LoRaWAN electric energy meter and method of network entry of quick networking mechanism |
| CN110308324A (en) * | 2019-07-10 | 2019-10-08 | 深圳市中远通电源技术开发有限公司 | A kind of method and device of threephase AC electric energy acquisition |
-
2017
- 2017-06-02 CN CN201720629541.XU patent/CN206930710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187171A (en) * | 2019-06-25 | 2019-08-30 | 武汉阿迪克电子股份有限公司 | A kind of the LoRaWAN electric energy meter and method of network entry of quick networking mechanism |
| CN110308324A (en) * | 2019-07-10 | 2019-10-08 | 深圳市中远通电源技术开发有限公司 | A kind of method and device of threephase AC electric energy acquisition |
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