CN209657488U - A kind of intelligent meter data recording system - Google Patents
A kind of intelligent meter data recording system Download PDFInfo
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- CN209657488U CN209657488U CN201920473736.9U CN201920473736U CN209657488U CN 209657488 U CN209657488 U CN 209657488U CN 201920473736 U CN201920473736 U CN 201920473736U CN 209657488 U CN209657488 U CN 209657488U
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Abstract
The utility model discloses a kind of intelligent meter data recording systems, including terminal table tool, remote meter reading terminal acquisition device, concentrator, cloud server, collection to destroy management platform, user terminal, and the data of acquisition are sent to remote meter reading terminal acquisition device by terminal table tool；Remote meter reading terminal acquisition device receives the data that terminal table tool is sent, and network module sends data packets to concentrator by wireless communication；Cloud server is uploaded to after the data summarization for the remote meter reading terminal acquisition device acquisition that concentrator is connected it；Collection destroies management platform and connects cloud server by internet, handles the data of acquisition, analyzes the state of each terminal table tool, and administrator sends instruction according to the virtual condition that terminal table has；User terminal connects cloud server by internet, receives payment and reminds.The utility model can achieve long-range, low-power consumption meter reading purpose.
Description
Technical field
The utility model relates to reading technique fields, more particularly, to a kind of intelligent meter data recording system.
Background technique
With the proposition of smart city concept, improved day by day, the nothing based on GPRS, ZigBee etc. of domestic intellectualizing system
Line long-distance meter-reading system comes into being, it solves manual metering a series of problems, has saved human cost, but there is also ask
Topic.
First is that using the cellular remote kilowatt meter reading-out system of GPRS/3G/4G, it can be achieved that telecommunication, but communication base station user
Capacity is small, and power consumption is high, and signal difference can not be widely applied.Using the remote meter reading of ZigBee, it is based on IEEE802.15.4 standard
Low-data-rate wireless personal area network agreement, for working frequency range in 2.4GHz, frequency is higher, and diffraction and interference free performance are poor, transmission distance
From shorter；
Second is that during copy reading, interfered since channel exists using power line carrier or micropower radio meter register, it is past
It is past to need to carry out multiple copy reading, it can achieve the effect that 100% copies and accepts.Meanwhile carrying out power line carrier or micropower
, can be in the sky or on power line in transmission in the process of wireless communication, Reusability communication channel is using communication channel
Process in, largely can expend energy, and uncertain can guarantee success rate.Moreover, when doing data application,
Channel can not support completely.And 485 external collectors is used to carry out copy reading, need to install additional external collector, using very not
Just, occupancy place is also compared in installation, is not easy to utilization and extention.
Utility model content
The purpose of this utility model is that for it is above-mentioned in the prior art, kilowatt meter reading-out system data transmit diffraction and anti-interference
Difference, the high problem of power consumption, provides a kind of intelligent meter data recording system, can achieve long-range, low-power consumption meter reading purpose.
The another object of the utility model is to provide a kind of suitable for compatible RS485 communication modes or power line communication mode
Long-distance meter-reading system.
The further object of the utility model is to provide a kind of ammeter's reading meter device, and especially a kind of NB-IoT turns micropower
Wireless ammeter's reading meter device, meter reading effect is good, low in energy consumption, easy to install and use.
The technical scheme in the invention for solving the above technical problem is: a kind of intelligent meter data recording system, including terminal
Table tool, remote meter reading terminal acquisition device, concentrator, cloud server, collection destroy management platform, user terminal, and terminal table tool will
The data of acquisition are sent to remote meter reading terminal acquisition device；
Remote meter reading terminal acquisition device receives the data that terminal table tool is sent, and network module will count by wireless communication
It is sent to concentrator according to packet, remote meter reading terminal acquisition device includes second communication module, third communication module, power supply control mould
Block, first interface contact pin and second interface contact pin, energy supply control module are connected by first interface contact pin with first terminal table tool,
Third communication module includes micro-control unit and twireless radio-frequency communication mould group, and the serial ports of micro-control unit passes through second interface contact pin
It is connected with the serial ports of first terminal table tool to realize the communication between micro-control unit and first terminal table tool, twireless radio-frequency communication
Mould group carries out wireless communication under the control of micro-control unit with other terminal tables tool with wireless communication function, microcontroller list
Member be connected with energy supply control module with control energy supply control module whether to second communication module and twireless radio-frequency communication mould group confession
Electricity to control second communication module and twireless radio-frequency communication mould group be it is in running order be in stop working state, the
Two communication modules are connected by between NB-IoT network implementations concentrator and micro-control unit with concentrator and micro-control unit
Communication；
Cloud service is uploaded to after the data summarization for the remote meter reading terminal acquisition device acquisition that concentrator is connected it
Device；
Collection destroies management platform and connects cloud server by internet, handles the data of acquisition, analyzes each end
The state of table tool is held, administrator sends instruction according to the virtual condition that terminal table has；
User terminal connects cloud server by internet, receives payment and reminds.
Cloud server is that carrying collection copies management platform data to store and process the data collecting conversion node and transmitting
The hardware carrier of library and various application services.
Second communication module is NB-IoT communication module.
Collection destroies management platform and connects cloud server by internet, handles data, analyzes each terminal table tool
State, the virtual condition for the state that administrator has according to terminal table sends instruction.
Management platform is destroyed when administrator logs in collection, when monitoring the power supply low battery warning reminding of terminal table tool, administrator
Replacement battery task can be issued to related maintenance personnel.
Management platform is destroyed when administrator logs in collection, when monitoring that terminal table has arrearage, sends cut-offing instruction, remote meter reading is whole
End acquisition device receives cut-offing instruction and wakes up terminal collection node, and terminal collection node is disconnected by switch valve control module and being used
Family electricity consumption power supply, similarly, after user's paying takes, switch valve control module closed user electricity consumption power supply.
User can be based on user terminal, connect cloud server by internet, receive payment and remind, remotely check electricity consumption
Information.
Preferably, terminal table tool includes data acquisition module, main control module, switch valve control module, under-voltage detection
Alarm module, first communication module, human-computer interaction module, I/O interface, power module, main control module are acquired with data respectively
Module, switch valve control module, undervoltage detection warning module, first communication module, human-computer interaction module, I/O interface, power supply mould
Block connection.Data acquisition module is connect by the first RS485 interface mode with main control module, and response main control module issues
Instruction, acquires the electricity consumption data and status information of current meter reading node, the information of acquisition is transmitted to main control module, main control
Module converts normalized number word format for the information of data collecting module collected and stores, and dissection process and publication items refer to
It enables；Main control module uses 32 single-chip microcontrollers of super low-power consumption based on ARMCortex-Mo+ kernel, and single-chip microcomputer signal is
STM32L051C8T6；First communication module is connect with main control module, by STM32LD51 interface, by data acquisition module
The data signal modulation of acquisition is low-frequency digital signal, to reduce the decline in data transmission procedure, is sent to remote meter reading end
End acquisition device simultaneously receives the instruction that remote meter reading terminal acquisition device transmits, and first communication module uses LoRaWAN module；It owes
Pressure detection alarm module, connect with main control module, by built-in ADC, programs given threshold, is by main control module judgement
No to be in low battery, when determining that power module be in low battery, control first communication module transmission alarm signal is to remotely copying
Meter terminal acquisition device；Switch valve control module, connect with main control module, receives main control module instruction, is opened or closed,
To interrupt or restore user power utilization power supply；Human-computer interaction module is driven by built-in LCD, shows the data letter of customer meter
Breath realizes human-computer interaction function；I/O interface carries out initiation parameter setting to have to terminal table.It can be based on different applications
Scene setting debugs the working frequency of first communication module, and 433/470/490/780/868/915MHz can set master control molding
Block different working modes, including sleep, stopping, standby, the current/voltage value difference of main control module under different mode.Pass through
The communication channel of first communication module is configured by I/O interface, and the network LoRa in a region is divided into several networks, with
The expense for reducing communication link avoids network paralysis or the bit error rate from increasing.
Preferably, concentrator includes processor module, the power line carrier modem being connected with processor module,
The sending and receiving end of power line carrier modem is connected with carrier transmitting-receiving circuit；And
The 2nd RS485 that processor module is additionally provided with for carrying out RS485 communication with remote meter reading terminal acquisition device connects
Mouthful；And
The output end of processor module will be uploaded to cloud after the data summarization of acquisition by connected third communication module
Hold server.Processor module is connect by the 2nd RS485 interface with second communication module.
Preferably, carrier transmitting-receiving circuit includes: power line coupling circuit, the carrier wave that is connected with the power line coupling circuit
Transmitting line and reception circuit, wherein carrier wave transmitting line is suitable for by obtaining carrier modulation from power line carrier modem
Signal is amplified by power amplifier, and accesses coupling coil in power line coupling circuit after the filtering of LC filter circuit
Secondary；
Receiving circuit includes: the antiresonant circuit being connected with the secondary of coupling coil, the output end of antiresonant circuit
It connects from power line carrier modem.
Preferably, the firewire in power line accesses the primary of coupling coil by concatenated inductance L3 and capacitor C12；With
And
The secondary both ends of coupling coil are connected with the bilateral diode D7 for voltage clamping.
Preferably, power amplifier is the complementary push-pull power amplification circuit being made up of four triodes；LC filtering
Circuit is the bandpass filter being made of inductance L6 and capacitor C32, with filtering harmonics component.
Preferably, secondary one end of coupling coil passes through resistance R101 connection antiresonant circuit；
Antiresonant circuit is made of capacitor C15, capacitor C18 and inductance L1 in parallel, and
The both ends of antiresonant circuit are also connected with diode D2 and diode for clamper reception voltage signal value
D14。
Preferably, remote meter reading terminal acquisition device includes status indicator lamp, status indicator lamp includes that uplink state refers to
Show that lamp and downstream state indicator light, uplink state indicator light are used to indicate the working condition of second communication module, downstream state refers to
Show that lamp is used to indicate the working condition of twireless radio-frequency communication mould group.
Preferably, terminal table tool setting wake-up mechanism, receives and instructs and control data acquisition module by main control module
Block, first communication module response instruction.Terminal table tool has setting wake-up mechanism to terminal table by I/O interface, terminal table tool
First communication module at regular intervals T come detect whether have in a period of time t remote meter reading terminal acquisition device send finger
It enables, no then terminal table tool is slept；Active state is kept if detecting data, until first communication module is by data
It is transmitted, is then again introduced into sleep state, wake up again after time T.
Preferably, data acquisition module is connected by the first RS485 interface mode and main control module in terminal table tool
It connects, the instruction that response main control module issues acquires the data and status information of current meter reading node, the data of acquisition are transmitted
To main control module；
First communication module is connect with main control module, by STM32LD51 interface, by the number of data collecting module collected
It is believed that number being modulated to low-frequency digital signal, to reduce the decline in data transmission procedure, it is sent to remote meter reading terminal acquisition dress
It sets, and receives the instruction that remote meter reading terminal acquisition device transmits, first communication module uses LoRaWAN module.
The utility model has the beneficial effect that
1, the utility model can achieve long-range, low-power consumption meter reading purpose；
2, the utility model can be compatible with RS485 communication modes or power line communication mode, to meet RS485 communication or electricity
Line of force communication need had not only met new cell table tool installation, but also has been able to satisfy the needs of old school area table tool transformation；
3, first communication module shell used in current intelligent electric meter, interface contact pin delimiter can be used in the utility model
The definition of ammeter contact pin communication interface is closed, so as to be directly mounted in current intelligent electric meter, is installed and very easy to use.
Detailed description of the invention
Fig. 1 is the system principle diagram of the utility model.
Fig. 2 is the connection schematic diagram of the terminal table tool of the utility model.
Fig. 3 is the functional block diagram of the remote meter reading terminal acquisition device of the utility model.
Fig. 4 is the functional block diagram of the concentrator of the utility model.
Fig. 5 is the circuit diagram of the carrier transmitting-receiving circuit of the utility model.
In figure: 1, terminal table has, 11, data acquisition module, 12, main control module, 13, undervoltage detection warning module, 14,
Switch valve control module, 15, first communication module, 16, human-computer interaction module, 17, I/O interface, 18, power module, 19, first
RS485 interface, 2, remote meter reading terminal acquisition device, 21, second communication module, 22, third communication module, 221, microcontroller list
Member, 222, twireless radio-frequency communication mould group, 23, energy supply control module, 24, first interface contact pin, 25, second interface contact pin, 26, refer to
Show status lamp, 3, concentrator, 31, processor, the 32, the 2nd RS485 interface, 33, carrier transmitting-receiving circuit, 4, cloud server, 5,
Collection destroies management platform, 6, user terminal
Specific embodiment
The utility model is further described below in conjunction with drawings and embodiments.
As shown in Figs 1-4, a kind of intelligent meter data recording system of the utility model, including terminal table tool 1, the acquisition of remote meter reading terminal
Device 2, concentrator 3, cloud server 4, collection destroy management platform 5, user terminal 6, and the data of acquisition are sent to by terminal table tool 1
Remote meter reading terminal acquisition device 2；
Remote meter reading terminal acquisition device 2 receives the data that terminal table tool 1 is sent, and network module will by wireless communication
Data packet is sent to concentrator 3, and remote meter reading terminal acquisition device 2 includes second communication module 21, third communication module 22, electricity
Source control module 23, first interface contact pin 24 and second interface contact pin 25, energy supply control module 23 pass through first interface contact pin 24
It is connected with first terminal table tool 1, third communication module 22 includes micro-control unit 221 and twireless radio-frequency communication mould group 222, micro-control
The serial ports of unit 221 processed is connected by second interface contact pin 25 with the serial ports of first terminal table tool 1 to realize micro-control unit 221
With the communication between first terminal table tool 1, twireless radio-frequency communication mould group 222 is under the control of micro-control unit 221 and with nothing
Other terminal tables tool 1 of line communication function carries out wireless communication, and micro-control unit 221 is connected to control with energy supply control module 23
Whether energy supply control module 23 is to second communication module 21 and the power supply of twireless radio-frequency communication mould group 222 thus control the second communication mould
Block 21 and twireless radio-frequency communication mould group 222 be it is in running order be in stop working state, second communication module 21 with
Concentrator 3 and micro-control unit 221 are connected by logical between NB-IoT network implementations concentrator 3 and micro-control unit 221
Letter；
Cloud clothes are uploaded to after the data summarization that the remote meter reading terminal acquisition device 2 that concentrator 3 is connected it acquires
Business device 4；
Collection destroies management platform 5 and connects cloud server 4 by internet, handles the data of acquisition, analysis is each
The state of terminal table tool 1, administrator send instruction according to the virtual condition of terminal table tool 1；
User terminal 6 connects cloud server 4 by internet, receives payment and reminds.
Terminal table tool 1 includes data acquisition module 11, main control module 12, switch valve control module 14, under-voltage detection report
Alert module 13, first communication module 15, human-computer interaction module 16, I/O interface 17, power module 18, main control module 12 are distinguished
With data acquisition module 11, switch valve control module 14, undervoltage detection warning module 13, first communication module 15, human-computer interaction
Module 16, I/O interface 17, power module 18 connect.
Concentrator 3 includes 31 module of processor, the power line carrier modem being connected with 31 module of processor, electric power
The sending and receiving end of line carrier modem is connected with carrier transmitting-receiving circuit 33；And
31 module of processor is additionally provided with the 2nd RS485 for carrying out RS485 communication with remote meter reading terminal acquisition device 2
Interface 32；And
The output end of 31 module of processor will be uploaded to by connected third communication module after the data summarization of acquisition
Cloud server 4.
Carrier transmitting-receiving circuit 33 includes: power line coupling circuit, the carrier wave being connected with power line coupling circuit transmission electricity
Road and reception circuit, wherein the carrier wave transmitting line is suitable for the end P17 by power line carrier modem such as PL3106
Carrier (boc) modulated signals are obtained, are amplified by power amplifier, and the access power line coupling electricity after the filtering of LC filter circuit
The secondary of coupling coil in road；Receiving circuit includes: the antiresonant circuit being connected with the secondary of coupling coil, parallel resonance electricity
The output end on road connects power line carrier modem.
Firewire in power line accesses the primary of coupling coil by concatenated inductance L3 and capacitor C12；And coupling line
The secondary both ends of circle are connected with the bilateral diode D7 for voltage clamping, to prevent excessive surge current.
Power amplifier is to be made up of four triode triode Q3, triode Q4, triode Q5 and triode Q6
Complementary push-pull power amplification circuit；LC filter circuit is the bandpass filter being made of inductance L6 and capacitor C32, with filtering harmonics
Component；And it can be used between triode Q5 and the base stage and emitter of triode Q5 by diode D12 and diode D13
Voltage clamping, absorb the interference of power supply spike, and complementary push-pull power amplification be connected to by diode D3 and diode D4
The output end of circuit plays the role of protecting circuit.
Secondary one end of coupling coil passes through resistance R101 connection antiresonant circuit；Antiresonant circuit is by electricity in parallel
Hold C15, capacitor C18 and inductance L1 to constitute, and centre frequency is 120kHZ, to play the role of frequency-selecting to reception signal, and
The both ends of the antiresonant circuit are also connected with diode D2 and diode D14 for clamper reception voltage signal value, will
Voltage clamping extremely ± 0.7V.
Remote meter reading terminal acquisition device 2 includes status indicator lamp 26, and status indicator lamp 26 includes uplink state indicator light
With downstream state indicator light, uplink state indicator light is used to indicate the working condition of second communication module 21, downstream state instruction
Lamp is used to indicate the working condition of twireless radio-frequency communication mould group 222.
1 setting wake-up mechanism of terminal table tool, receives and instructs and control data acquisition module 11, the by main control module 12
The response instruction of one communication module 15.
In terminal table tool 1, data acquisition module 11 is connect by 19 mode of the first RS485 interface with main control module 12,
The instruction that response main control module 12 issues, acquires the data and status information of current meter reading node, and the data of acquisition are transmitted
To main control module 12；
First communication module 15 is connect with main control module 12, and by STM32LD51 interface, data acquisition module 11 is adopted
The data signal modulation integrated, to reduce the decline in data transmission procedure, is sent to remote meter reading terminal as low-frequency digital signal
Acquisition device 2, and the instruction that remote meter reading terminal acquisition device 2 transmits is received, first communication module 15 uses LoRaWAN mould
Block.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of intelligent meter data recording system, it is characterised in that: including terminal table tool (1), remote meter reading terminal acquisition device (2), collection
Middle device (3), cloud server (4), collection destroy management platform (5), user terminal (6), and terminal table has (1) and sends the data of acquisition
To remote meter reading terminal acquisition device (2)；
Remote meter reading terminal acquisition device (2) receives the data that terminal table tool (1) is sent, and network module will by wireless communication
Data packet is sent to concentrator (3), and remote meter reading terminal acquisition device (2) includes second communication module (21), third communication mould
Block (22), energy supply control module (23), first interface contact pin (24) and second interface contact pin (25), energy supply control module (23) are logical
First interface contact pin (24) and first terminal table tool (1) is crossed to be connected, third communication module (22) include micro-control unit (221) and
The serial ports of twireless radio-frequency communication mould group (222), micro-control unit (221) has by second interface contact pin (25) and first terminal table
(1) serial ports is connected to realize the communication between micro-control unit (221) and first terminal table tool (1), twireless radio-frequency communication mould
Group (222) carries out channel radio with other terminal tables tool (1) with wireless communication function under the control of micro-control unit (221)
Letter, micro-control unit (221) are connected with energy supply control module (23), second communication module (21) and concentrator (3) and microcontroller
Unit (221) is connected through the communication between NB-IoT network implementations concentrator (3) and micro-control unit (221)；
Cloud clothes are uploaded to after the data summarization for remote meter reading terminal acquisition device (2) acquisition that concentrator (3) is connected it
It is engaged in device (4)；
Collection copies management platform (5) and connects cloud server (4) by internet, handles the data of acquisition, analysis is each
Terminal table has the state of (1), and administrator sends instruction according to the virtual condition that terminal table has (1)；
User terminal (6) connects cloud server (4) by internet, receives payment and reminds.
2. intelligent meter data recording system according to claim 1, it is characterised in that: it includes data acquisition module that terminal table, which has (1),
(11), main control module (12), switch valve control module (14), undervoltage detection warning module (13), first communication module (15),
Human-computer interaction module (16), I/O interface (17), power module (18), main control module (12) respectively with data acquisition module
(11), switch valve control module (14), undervoltage detection warning module (13), first communication module (15), human-computer interaction module
(16), I/O interface (17), power module (18) connection.
3. intelligent meter data recording system according to claim 1 or 2, it is characterised in that: concentrator (3) includes processor (31) mould
The sending and receiving end of block, the power line carrier modem being connected with processor (31) module, power line carrier modem connects
It is connected to carrier transmitting-receiving circuit (33)；And
Processor (31) module is additionally provided with the 2nd RS485 for carrying out RS485 communication with remote meter reading terminal acquisition device (2)
Interface (32)；And
The output end of processor (31) module will be uploaded to cloud after the data summarization of acquisition by connected third communication module
It holds server (4).
4. intelligent meter data recording system according to claim 3, it is characterised in that: carrier transmitting-receiving circuit (33) includes: power line
Coupling circuit, the carrier wave transmitting line being connected with the power line coupling circuit and reception circuit, wherein carrier wave transmitting line is suitable for
By obtaining carrier (boc) modulated signals from power line carrier modem, amplified by power amplifier, and filtered through LC
The secondary of coupling coil in power line coupling circuit is accessed after circuit filtering；
Receiving circuit includes: the antiresonant circuit being connected with the secondary of coupling coil, the output end connection of antiresonant circuit
From power line carrier modem.
5. intelligent meter data recording system according to claim 4, it is characterised in that: the firewire in power line passes through concatenated inductance
The primary of L3 and capacitor C12 access coupling coil；And
The secondary both ends of coupling coil are connected with the bilateral diode D7 for voltage clamping.
6. intelligent meter data recording system according to claim 5, it is characterised in that: power amplifier is to pass through four triode structures
At complementary push-pull power amplification circuit；LC filter circuit is the bandpass filter being made of inductance L6 and capacitor C32, with filtering
Harmonic component.
7. intelligent meter data recording system according to claim 6, it is characterised in that: secondary one end of coupling coil passes through resistance
R101 connection antiresonant circuit；
Antiresonant circuit is made of capacitor C15, capacitor C18 and inductance L1 in parallel, and
The both ends of antiresonant circuit are also connected with diode D2 and diode D14 for clamper reception voltage signal value.
8. intelligent meter data recording system described according to claim 1 or 2 or 4 or 5 or 6 or 7, it is characterised in that: remote meter reading terminal
Acquisition device (2) includes status indicator lamp (26), and status indicator lamp (26) includes uplink state indicator light and downstream state instruction
Lamp, uplink state indicator light are used to indicate the working condition of second communication module (21), and downstream state indicator light is used to indicate nothing
The working condition of line radio communication mould group (222).
9. intelligent meter data recording system according to claim 8, it is characterised in that: terminal table has (1) and wake-up mechanism is arranged, and receives
Instruct and pass through main control module (12) control data acquisition module (11), first communication module (15) response instruction.
10. intelligent meter data recording system according to claim 9, it is characterised in that: terminal table has in (1), data acquisition module
(11) it is connect by the first RS485 interface (19) mode with main control module (12), the finger that response main control module (12) issues
It enables, acquires the data and status information of current meter reading node, the data of acquisition are transmitted to main control module (12)；
First communication module (15) is connect with main control module (12), by STM32LD51 interface, by data acquisition module (11)
The data signal modulation of acquisition is low-frequency digital signal, to reduce the decline in data transmission procedure, is sent to remote meter reading end
It holds acquisition device (2), and receives the instruction that remote meter reading terminal acquisition device (2) transmits, first communication module (15) uses
LoRaWAN module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473736.9U CN209657488U (en) | 2019-04-09 | 2019-04-09 | A kind of intelligent meter data recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473736.9U CN209657488U (en) | 2019-04-09 | 2019-04-09 | A kind of intelligent meter data recording system |
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| Publication Number | Publication Date |
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| CN209657488U true CN209657488U (en) | 2019-11-19 |
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ID=68529103
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920473736.9U Expired - Fee Related CN209657488U (en) | 2019-04-09 | 2019-04-09 | A kind of intelligent meter data recording system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743718A (en) * | 2019-03-12 | 2019-05-10 | 贵州电网有限责任公司 | Wireless ad hoc network system based on LoRa |
| CN110930672A (en) * | 2019-11-26 | 2020-03-27 | 三峡大学 | NB-IoT-based electric energy meter remote meter reading system |
-
2019
- 2019-04-09 CN CN201920473736.9U patent/CN209657488U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109743718A (en) * | 2019-03-12 | 2019-05-10 | 贵州电网有限责任公司 | Wireless ad hoc network system based on LoRa |
| CN110930672A (en) * | 2019-11-26 | 2020-03-27 | 三峡大学 | NB-IoT-based electric energy meter remote meter reading system |
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