CN208091520U - A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies - Google Patents
A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies Download PDFInfo
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- CN208091520U CN208091520U CN201820246147.2U CN201820246147U CN208091520U CN 208091520 U CN208091520 U CN 208091520U CN 201820246147 U CN201820246147 U CN 201820246147U CN 208091520 U CN208091520 U CN 208091520U
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Abstract
A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies, belong to gas meter, flow meter technical field.It is characterized in that：Control circuit includes main control module, gas concentration monitoring modular, temperature-measuring module, metering module, wireless communication module, valve drive module and LCD display module, the output end of gas concentration monitoring modular, temperature-measuring module and metering module is connected with the signal input part of main control module, the signal output end of main control module is connected with LCD display module, valve drive module, and wireless communication module is bi-directionally connected with main control module input/output port.In the wireless gas meter and kilowatt meter reading-out system based on LoRa technologies, by using the wireless communication module of the integrated chip composition of LoRa spread spectrum communications so that anti-interference ability greatly improves in communication process, and has taken into account communication distance and power consumption to a certain extent.
Description
Technical field
A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies, belong to gas meter, flow meter technical field.
Background technology
With the continuous improvement of people's living standards, city gas cause is fast-developing, combustion gas resident rapidly increases.
But the gas meter, flow meter in average family only realizes the function of measuring of combustion gas at present, automatization level is relatively low, cannot supervise in real time
Indoor environment is surveyed, timely processing is unable to when there is the emergency case of gas leakage, is easy delay optimization process opportunity, it is difficult to hinder
The only generation of fire, therefore for nobody long-term family, there are certain security risks.
Since current gas meter function is single, the statistics that combustion gas uses still is realized by the way of manual metering,
For meter reading personnel and average family, various inconvenience can be brought, exist simultaneously following defect：Human cost and time cost
Higher, low, data acquisition time lag that there is meter reading personnel's working efficiencies is difficult to time-shared charge, combustion gas charge department expenditure
The drawbacks such as big, it is difficult to meet user management demand huge at present.
In the prior art, there is also the technical solutions for having some radio meter registers, but the radio meter register in existing scheme
The maximum drawback of system is that data are highly prone to interfere during transmission, therefore the transmission for causing data is not steady enough
It is fixed, therefore the development of wireless gas meter is limited to a certain extent.
Invention content
The technical problems to be solved in the utility model is：One kind is overcome the deficiencies of the prior art and provide by using LoRa
The wireless communication module of the integrated chip composition of spread spectrum communication so that anti-interference ability greatly improves in communication process, and
Communication distance and the wireless gas meter and kilowatt meter reading-out system based on LoRa technologies of power consumption have been taken into account to a certain extent.
Technical solution adopted by the utility model to solve its technical problems is：The wireless gas based on LoRa technologies
Table, including shell of gas meter, it is characterised in that：Control circuit is provided in shell of gas meter, control circuit includes main control
Module, gas concentration monitoring modular, temperature-measuring module, metering module, wireless communication module, valve drive module and LCD
Display module, gas concentration monitoring modular, the output end of temperature-measuring module and metering module and main control module signal
Input terminal is connected, and the signal output end of main control module is connected with LCD display module, valve drive module, wireless communication module
It is bi-directionally connected with main control module input/output port, wireless communication module uses LoRa spread spectrum communications using model SX1276
Integrated chip.
Preferably, in the wireless communication module, the foot of 2 feet of integrated chip U1 ~ 4,15 feet and 23 feet directly connect
Ground, 5 feet of integrated chip U1 while one end of parallel connection crystal oscillator X1 and capacitance C2,6 feet of integrated chip U1 while crystal oscillator in parallel
Another section of X1 and one end of capacitance C1, the other end ground connection of capacitance C1 ~ C2,14 feet while shunt capacitance of integrated chip U1
One end of C3 and connecting pin VDD_RFS, the other end ground connection of capacitance C3,24 feet of integrated chip U1 simultaneously shunt capacitance C13 ~
One end of C17 and terminals VDD_RFS, the other end ground connection of capacitance C13 ~ C17；
25 feet while shunt capacitance C7 of integrated chip U1, one end of capacitance C11 ~ C12 and resistance R1, capacitance C7's is another
26 feet and ground terminal of one end while integrated chip U1 in parallel, the other end ground connection of capacitance C11 ~ C12, the other end of resistance R1
One end of shunt inductance L2, capacitance C9 ~ C10 simultaneously, 27 feet of the other end connection integrated chip U1 of inductance L2, capacitance C10's
The other end is grounded, the other end of capacitance C9 while one end of shunt capacitance C18 ~ C19 and inductance L3, the other end of capacitance C18
The other end of ground connection, capacitance C19 and inductance L3 while one end of shunt capacitance C20 and inductance L4, the other end of inductance L4
Connect 3 feet of integrated chip U2, the other end ground connection of capacitance C20 ~ C21；
1 foot of integrated chip U1 while one end of shunt inductance L1 and capacitance C8, the other end ground connection of inductance L1, capacitance
1 foot of the other end connection integrated chip U2 of C8, the 2 feet ground connection of integrated chip U2,4 feet while shunt capacitance of integrated chip U2
One end of C26 and resistance R2, the other end ground connection of capacitance C26, the other end of resistance R2 connect terminals FEM_CPS, integrate
5 feet of chip U2 while one end of shunt capacitance C24 and inductance L5, the other end ground connection of capacitance C24, the other end of inductance L5
One end of shunt capacitance C25, capacitance C27 simultaneously, the other end ground connection of capacitance C25, the other end of capacitance C27 connect terminals
6 feet of CQRF, integrated chip U2 while one end of parallel connection terminals VDD_ANA and capacitance C22 ~ C23, capacitance C22 ~ C23's
The other end is grounded.
Preferably, the integrated chip U2 uses the electronic switch module of model UPG2214TB.
Preferably, the gas concentration monitoring modular is carbon monoxide transducer, and gas concentration monitoring modular is mounted on
The outside of shell of gas meter, be equipped on shell of gas meter with gas concentration monitoring modular coordinate grafting jack, jack with
Main controller module is connected.
Preferably, the temperature-measuring module is temperature sensor, and temperature-measuring module is mounted on shell of gas meter
Outside, is equipped with the jack for coordinating grafting with temperature-measuring module on shell of gas meter, and jack is connected with main controller module.
Preferably, the metering module is flowmeter, and the valve drive module is solenoid valve, flowmeter and electromagnetism
Valve is installed in gas inlet pipeline.
Preferably, further include power management module, power management module is main control module, clock module, gas concentration
Monitoring modular, temperature-measuring module, metering module, communication module, alarm module, valve drive module and LCD display module
Working power is provided.
A kind of wireless kilowatt meter reading-out system of the wireless gas meter composition based on LoRa technologies, it is characterised in that：Including passing through net
Network and the server of gas company realize multiple concentrators of communication, each concentrator is separately connected multiple collectors, each
A collector is separately connected multiple wireless gas meters based on LoRa technologies；Between gas company's server and concentrator
And be attached by wireless communication mode and concentrator between concentrator and collector, collector with it is described based on LoRa
It is realized and is communicated by LoRa simultaneous systems between the wireless gas meter of technology.
Compared with prior art, advantageous effect possessed by the utility model is：
1, in the wireless gas meter and kilowatt meter reading-out system based on LoRa technologies, by using the integrated of LoRa spread spectrum communications
The wireless communication module of chip composition so that anti-interference ability greatly improves in communication process, and takes into account to a certain extent
Communication distance and power consumption.
2, gas concentration monitoring modular is mounted on the outside of shell of gas meter, and jack is installed on shell of gas meter, is passed through
Jack is realized with main control module and is connected, while facilitating the installation and replacement of gas concentration monitoring modular.
3, it is provided with enquiry module, enquiry module is an interface being reserved on shell of gas meter, when LORAWAN is communicated
It, can be by manually being realized by conventional communications protocol and main control module by enquiry module when module can not realize communication in time
Related data is read in communication.
4, wireless communication module uses the radio frequency transmission chip of model SX1276, SX1276 to be spread using advanced LoRa
The communication technology ensures that the anti-interference ability of module communication greatly improves, and has equally accomplished low-down current drain.Using
The patent LoRa modulation techniques of Semtech, if the crystal oscillator and specified component, SX1276 using low cost can reach
To the sensitivity of -148dBm.Highly sensitive and 20dBm power amplifier makes it in the application of any required transmission range or robustness
In it is masterly.On conventional modulated technology, LoRa has apparent progress in modularization and selectivity, ensure that
Transmission range and energy consumption have been taken into account on the basis of anti-interference.
Description of the drawings
Fig. 1 is the wireless gas meter control circuit principle block diagram based on LoRa technologies.
Fig. 2 is the wireless gas meter control circuit wireless transport module circuit diagram based on LoRa technologies.
Fig. 3 is wireless kilowatt meter reading-out system composition schematic diagram.
Specific implementation mode
Fig. 1 ~ 3 are the most preferred embodiments of the utility model, and 1 ~ 3 pair of the utility model is done furtherly below in conjunction with the accompanying drawings
It is bright.
As shown in Figure 1, a kind of being based on wireless intelligent gas control system, include inside conventional shell of gas meter
Control circuit, control circuit include main control module, clock module, gas concentration monitoring modular, temperature-measuring module, metering mould
Block, power management module, wireless communication module, alarm module, valve drive module, LCD display module and enquiry module.
The signal output of gas concentration monitoring modular, temperature-measuring module, metering module, clock module and enquiry module
End is connected with the signal input part of main control module.The signal output end of main control module drives mould with LCD display module, valve
Block and alarm module are connected.Wireless communication module is bi-directionally connected with main control module input/output port.Power management module
For to main control module and above-mentioned clock module, gas concentration monitoring modular, temperature-measuring module, metering module, nothing
Line communication module, alarm module, valve drive module, LCD display module and enquiry module provide the power supply needed for work.
Clock module is realized using conventional timing circuit or module, is provided for timing and to main control module real-time
Time data.
Gas concentration monitoring modular is realized using commercially available common carbon monoxide transducer, for monitoring in ambient enviroment
Carbonomonoxide concentration.Gas concentration monitoring modular is preferably mounted at the outside of shell of gas meter, can be installed on shell of gas meter
Jack is realized by jack and main control module and is connected, while facilitating the installation and replacement of gas concentration monitoring modular.
Temperature-measuring module is realized using commercially available common temperature sensor, for detecting the temperature in shell of gas meter；
It can also be mounted on the outside of shell of gas meter, it is real by jack and main control module by installing jack on shell of gas meter
It now connects, can also simultaneously be installed in the inside and outside of shell of gas meter.
Metering module is realized using commercially available common flowmeter, is installed in gas meter, flow meter air inlet pipeline, for gas meter, flow meter
Charge flow rate measures.
Power management module includes that conventional transforming circuit, rectification circuit, filter circuit and commercially available common power supply turn
Chip is changed, is different DC power supplies according to the different switching of modules power demands.
Alarm module can be used common sound-light alarm form and realize.
Valve drive module can be used commercially available common solenoid valve and realize, is installed in gas meter, flow meter air inlet pipeline, passes through valve
Door drive module can realize the switching of gas meter, flow meter air inlet pipeline.
LCD display module such as shows the time, measures for being shown as needed to the operating status of gas meter, flow meter
To the combustion gas number of degrees and the abnormal conditions state etc. that detects.
Enquiry module is an interface being reserved on shell of gas meter, when wireless communication module can not realize communication in time
When, it can be communicated by manually being realized with main control module by conventional communications protocol by enquiry module, read related data.
Wireless communication module uses the radio frequency transmission chip of model SX1276, SX1276 logical using advanced LoRa spread spectrums
Letter technology ensures that the anti-interference ability of module communication greatly improves, and has equally accomplished low-down current drain.Using
The patent LoRa modulation techniques of Semtech, if the crystal oscillator and specified component, SX1276 using low cost can reach
To the sensitivity of -148dBm.Highly sensitive and 20dBm power amplifier makes it in the application of any required transmission range or robustness
In it is masterly.On conventional modulated technology, LoRa has apparent progress in modularization and selectivity, ensure that
Transmission range and energy consumption have been taken into account on the basis of anti-interference.
The LoRa spread spectrum communication modems for including in SX1276 make it be based on FSK and OOK modulatedemodulates compared with existing
The system of tune has significant longer transmission distance characteristic.Under maximum data transfer rate, LoRa technology ratios FSK improves 8dB and connects
By sensitivity.If this value of the device of outfit function admirable can reach 20dB.LoRa technologies are in selectivity and module performance
Upper to have significant advantage, this further improves the reliability of communication.In order to maximize flexibility, user can configure spread spectrum
Bandwidth, spreading factor and the error correction rate of modulator.Band spectrum modulation another advantage is that each spreading factor is orthogonal,
Such multiway transmission signal can be in same band transmissions without interfering with each other.This chip is compatible with FSK modulation system.Standard
GFSK, FSK, OOK and GMSK be also provided with compatibility existing system or standard, such as wireless MBUS and
IEEE802.15.4g.The bandwidth of SX1276 can be adjusted in 7.8kHz and 500kHz, and spreading factor can be adjusted to 12 by 6 and cover
The entire available frequency range of lid.
As shown in Fig. 2, with SX1276 radio frequency transmission chips（Integrated chip U1）For the circuit of the wireless transport module of core
Schematic diagram is：The foot of 2 feet of integrated chip U1 ~ 4,15 feet and 23 feet are directly grounded, 5 feet of integrated chip U1 crystal oscillator in parallel simultaneously
Another section and capacitance C1 one end of one end of X1 and capacitance C2,6 feet of integrated chip U1 while crystal oscillator X1 in parallel, capacitance
The other end of C1 ~ C2 is grounded.14 feet of integrated chip U1 while one end of shunt capacitance C3 and connecting pin VDD_RFS, capacitance
The other end of C3 is grounded.24 feet of integrated chip U1 while one end of shunt capacitance C13 ~ C17 and terminals VDD_RFS, electricity
Hold the other end ground connection of C13 ~ C17.
25 feet while shunt capacitance C7 of integrated chip U1, one end of capacitance C11 ~ C12 and resistance R1, capacitance C7's is another
26 feet and ground terminal of one end while integrated chip U1 in parallel, the other end ground connection of capacitance C11 ~ C12, the other end of resistance R1
One end of shunt inductance L2, capacitance C9 ~ C10 simultaneously, 27 feet of the other end connection integrated chip U1 of inductance L2, capacitance C10's
The other end is grounded.The other end of capacitance C9 while one end of shunt capacitance C18 ~ C19 and inductance L3, the other end of capacitance C18
The other end of ground connection, capacitance C19 and inductance L3 while one end of shunt capacitance C20 and inductance L4, the other end of inductance L4
Connect 3 feet of integrated chip U2, the other end ground connection of capacitance C20 ~ C21.
1 foot of integrated chip U1 while one end of shunt inductance L1 and capacitance C8, the other end ground connection of inductance L1, capacitance
1 foot of the other end connection integrated chip U2 of C8, the 2 feet ground connection of integrated chip U2.4 feet while shunt capacitance of integrated chip U2
One end of C26 and resistance R2, the other end ground connection of capacitance C26, the other end connection terminals FEM_CPS of resistance R2.It is integrated
5 feet of chip U2 while one end of shunt capacitance C24 and inductance L5, the other end ground connection of capacitance C24, the other end of inductance L5
One end of shunt capacitance C25, capacitance C27 simultaneously, the other end ground connection of capacitance C25, the other end of capacitance C27 connect terminals
CQRF.6 feet of integrated chip U2 while one end of parallel connection terminals VDD_ANA and capacitance C22 ~ C23, capacitance C22 ~ C23's
The other end is grounded.
Above-mentioned terminals VDD_RFS, terminals VDD_RFS, terminals FEM_CPS, terminals VDD_ANA and wiring
End CQRE is connected with main control module.The communication interface to microprocessor, RF transmit-receive circuit are contained in circuit shown in Fig. 2
And crystal oscillating circuit, power circuit.Communication interface is SPI communication, including clock pins SCK, it is main enter from go out pin MISO, it is main go out
From entering pin MOSI, enabled pin SCS.Crystal oscillator is no source crystal oscillator, frequency of oscillation 32MHz.Reset circuit is directly by external
Interface is connected to microprocessor, the convenient control to radio frequency chip.
Because radio frequency input and output are all by antenna, therefore radio frequency input and output pass through electronic switch module（Integrated chip
U2）Antenna is shared, antenna is switched to output circuit by electronic switch when radio frequency exports, and electronic cutting when radio frequency needs input
Antenna is switched to input circuit by pass again.The switching of electronic switch is realized by microprocessor and is controlled.Integrated chip U2 uses type
Number be UPG2214TB electronic switch module.
This module directly receives external 3.3V power supply power supplies, and external world's power supply cannot all ensure that power quality is good, therefore
Power supply enters after module improves the quality of power supply using the capacitance of different capacitances is increased in different parts.In power supply just into module
1 uf capacitances C17 of large capacity and capacitance C23 stabilized supply voltages is added in place, is provided relatively for chip analog circuit and radio circuit
Stable power supply removes the coupling between power supply.When power supply enters chip power pin using be added low-capacitance capacitance come
Remove the disturbance of power supply.The frequency dependence of the capacitance size and chip operation that are generally added.The decoupling of 100uf is used in the design
Capacitance, the respectively analog power of SX1276 chips, digital power and radio-frequency power supply provide power supply.Because of the work of electronic switch
For working frequency such as radio frequency chip, the power supply coupling capacitor of electronic switch is also selected to 100uf.
As shown in figure 3, a kind of kilowatt meter reading-out system, includes the multiple collection for realizing communication by network and the server of gas company
Middle device：Concentrator 1, concentrator 2 ... concentrator n, each concentrator are separately connected multiple collectors：Collector 1, acquisition
Device 2 ... collector n, each collector are separately connected multiple wireless gas meters based on LoRa technologies.Gas company services
Pass through the wireless communication mode and concentrator of the routine such as 2G, 3G, 4G between device and concentrator and between concentrator and collector
It is attached, is realized and communicated by LoRa simultaneous systems between collector and gas meter, flow meter.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is every without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Any simple modification, equivalent variations and remodeling, still fall within the guarantor of technical solutions of the utility model made by confrontation above example
Protect range.
Claims (7)
1. a kind of wireless gas meter based on LoRa technologies, including shell of gas meter, it is characterised in that：It is set in shell of gas meter
It is equipped with control circuit, control circuit includes main control module, gas concentration monitoring modular, temperature-measuring module, metering module, nothing
Line communication module, valve drive module and LCD display module, gas concentration monitoring modular, temperature-measuring module and metering
The output end of module is connected with the signal input part of main control module, the signal output end and LCD display module of main control module,
Valve drive module is connected, and wireless communication module is bi-directionally connected with main control module input/output port, and wireless communication module is adopted
The integrated chip of LoRa spread spectrum communications is used with model SX1276；
In the wireless communication module, the foot of 2 feet of integrated chip U1 ~ 4,15 feet and 23 feet are directly grounded, integrated chip
One end of 5 feet of U1 parallel connection crystal oscillator X1 and capacitance C2 simultaneously, 6 feet of integrated chip U1 simultaneously another section of parallel connection crystal oscillator X1 with
And one end of capacitance C1, the other end ground connection of capacitance C1 ~ C2,14 feet of integrated chip U1 simultaneously one end of shunt capacitance C3 and
The other end of connecting pin VDD_RFS, capacitance C3 is grounded, 24 feet of integrated chip U1 simultaneously shunt capacitance C13 ~ C17 one end with
And the other end ground connection of terminals VDD_RFS, capacitance C13 ~ C17；
25 feet while shunt capacitance C7 of integrated chip U1, one end of capacitance C11 ~ C12 and resistance R1, the other end of capacitance C7
26 feet and ground terminal of integrated chip U1 in parallel simultaneously, the other end ground connection of capacitance C11 ~ C12, the other end of resistance R1 is simultaneously
One end of shunt inductance L2, capacitance C9 ~ C10,27 feet of the other end connection integrated chip U1 of inductance L2, capacitance C10's is another
End ground connection, the other end of capacitance C9 while one end of shunt capacitance C18 ~ C19 and inductance L3, the other end ground connection of capacitance C18,
One end of the other end of capacitance C19 and inductance L3 while shunt capacitance C20 and inductance L4, the other end connection collection of inductance L4
At 3 feet of chip U2, the other end of capacitance C20 ~ C21 is grounded；
1 foot of integrated chip U1 while one end of shunt inductance L1 and capacitance C8, the other end ground connection of inductance L1, capacitance C8's
The other end connects 1 foot of integrated chip U2, the 2 feet ground connection of integrated chip U2,4 feet while shunt capacitance C26 of integrated chip U2
And one end of resistance R2, the other end ground connection of capacitance C26, the other end of resistance R2 connect terminals FEM_CPS, integrated chip
5 feet of U2 while one end of shunt capacitance C24 and inductance L5, the other end ground connection of capacitance C24, the other end of inductance L5 is simultaneously
One end of shunt capacitance C25, capacitance C27, the other end ground connection of capacitance C25, the other end of capacitance C27 connect terminals CQRF,
6 feet of integrated chip U2 while one end of parallel connection terminals VDD_ANA and capacitance C22 ~ C23, the other end of capacitance C22 ~ C23
Ground connection.
2. the wireless gas meter according to claim 1 based on LoRa technologies, it is characterised in that：The integrated chip U2
Using the electronic switch module of model UPG2214TB.
3. the wireless gas meter according to claim 1 based on LoRa technologies, it is characterised in that：The gas concentration prison
Survey module is carbon monoxide transducer, and gas concentration monitoring modular is mounted on the outside of shell of gas meter, on shell of gas meter
The jack for coordinating grafting with gas concentration monitoring modular is installed, jack is connected with main controller module.
4. the wireless gas meter according to claim 1 based on LoRa technologies, it is characterised in that：The temperature measures mould
Block is temperature sensor, and temperature-measuring module is mounted on the outside of shell of gas meter, is equipped on shell of gas meter and temperature
Measurement module coordinates the jack of grafting, jack to be connected with main controller module.
5. the wireless gas meter according to claim 1 based on LoRa technologies, it is characterised in that：The metering module is
Flowmeter, the valve drive module are solenoid valve, and flowmeter and solenoid valve are installed in gas inlet pipeline.
6. the wireless gas meter according to claim 1 based on LoRa technologies, it is characterised in that：It further include power management mould
Block, power management module be main control module, clock module, gas concentration monitoring modular, temperature-measuring module, metering module,
Communication module, alarm module, valve drive module and LCD display module provide working power.
7. using the wireless kilowatt meter reading-out system of wireless gas meter composition of claim 1 ~ 6 any one of them based on LoRa technologies,
It is characterized in that：Include multiple concentrators that communication is realized by network and the server of gas company, each concentrator point
Multiple collectors are not connected, each collector is separately connected multiple wireless gas meters based on LoRa technologies；Combustion gas
It is attached between corporate server and concentrator and by wireless communication mode and concentrator between concentrator and collector,
It is realized and is communicated by LoRa simultaneous systems between collector and the wireless gas meter based on LoRa technologies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820246147.2U CN208091520U (en) | 2018-02-11 | 2018-02-11 | A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820246147.2U CN208091520U (en) | 2018-02-11 | 2018-02-11 | A kind of wireless gas meter and kilowatt meter reading-out system based on LoRa technologies |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442224A (en) * | 2018-12-08 | 2019-03-08 | 台州鑫护家流体智控有限公司 | A kind of gas monitor and control method, system and device |
| CN110021117A (en) * | 2019-02-26 | 2019-07-16 | 杭州华宏通信设备有限公司 | A kind of gas meter, flow meter meter reading statistical system and method |
| CN112422649A (en) * | 2020-11-06 | 2021-02-26 | 山东天创亿联智能科技有限公司 | Heterogeneous network-based cloud meter reading method and system |
-
2018
- 2018-02-11 CN CN201820246147.2U patent/CN208091520U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442224A (en) * | 2018-12-08 | 2019-03-08 | 台州鑫护家流体智控有限公司 | A kind of gas monitor and control method, system and device |
| CN110021117A (en) * | 2019-02-26 | 2019-07-16 | 杭州华宏通信设备有限公司 | A kind of gas meter, flow meter meter reading statistical system and method |
| CN110021117B (en) * | 2019-02-26 | 2021-07-27 | 杭州华宏通信设备有限公司 | Gas meter reading statistical system and method |
| CN112422649A (en) * | 2020-11-06 | 2021-02-26 | 山东天创亿联智能科技有限公司 | Heterogeneous network-based cloud meter reading method and system |
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Effective date of registration: 20220310 Address after: 255000 Pioneer Park of Zibo science and Technology Industrial Park, Xishou, Sanying Road, Fangzhen Town, Zhangdian District, Zibo City, Shandong Province Patentee after: ZIBO BILLION ELECTRON Co.,Ltd. Address before: 255000 room 404, 4th floor, entrepreneurship Park, Zibo science and Technology Industrial Park, No. 69, Sanying Road, Zhangdian District, Zibo City, Shandong Province Patentee before: SHANDONG SPACE CREATIVE TELEMETRY INTELLIGENT TECHNOLOGY Co.,Ltd. |
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