CN107835222A - Combustion gas data transmission method and Internet of things system based on compound Internet of Things - Google Patents
Combustion gas data transmission method and Internet of things system based on compound Internet of Things Download PDFInfo
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- CN107835222A CN107835222A CN201710858014.0A CN201710858014A CN107835222A CN 107835222 A CN107835222 A CN 107835222A CN 201710858014 A CN201710858014 A CN 201710858014A CN 107835222 A CN107835222 A CN 107835222A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention provides a kind of combustion gas data transmission method and Internet of things system based on compound Internet of Things.Internet of things system includes user platform, service platform, management platform, multiple sensing networks and divides platform and subject table, and subject table includes gas meter, flow meter, and multiple sensing networks divide platform to divide platform and at least one auxiliary sensing network to divide platform including main sensing network.This method includes：Multiple sensing networks divide in platform main sensing network to divide platform to send combustion gas data to the management platform, auxiliary sensing network to divide platform to be stored combustion gas data；When management platform, which can not receive main sensing network, divides the combustion gas data that platform is sent, management platform divides platform to send interaction data to main sensing network, when main sensing network divides platform not respond to interaction data, management platform disconnects the connection for dividing platform with main sensing network, and divides platform to establish with an auxiliary sensing network and connect to receive the combustion gas data that auxiliary sensing network divides platform to store.The present invention can ensure stability, continuity, reliability and the validity of combustion gas data transfer.
Description
Technical field
The present invention relates to Internet of Things field, in particular to a kind of combustion gas transmission side data based on compound Internet of Things
Method and Internet of things system.
Background technology
At present, all begin to use intelligent gas meter in most of families or enterprise, remote transmission is carried out to combustion gas data.
Transmission of the existing intelligent gas meter to data is transmitted using single gateway, when gateway damage is broken down, backstage
Server can not receive the data of intelligent gas meter, cause loss of data, be unfavorable for the statistics of combustion gas data.
The content of the invention
In view of this, it is an object of the invention to provide a kind of combustion gas data transmission method and thing based on compound Internet of Things
Networked system, ensure the stability and reliability of the combustion gas data transfer of gas meter, flow meter.
In order to achieve the above object, the technical solution adopted by the present invention is as described below：
In a first aspect, the invention provides a kind of combustion gas data transmission method based on compound Internet of Things, methods described should
For Internet of things system, the Internet of things system, which includes user platform, service platform, management platform, multiple sensing networks point, puts down
Platform and subject table, the subject table include gas meter, flow meter, and it is flat that the multiple sensing network divides platform to include main sensing network point
Platform and at least one auxiliary sensing network divide platform, and methods described includes：
Subject table, which sends the combustion gas data collected to the multiple sensing network, divides platform；
The main sensing network divides platform to send the combustion gas data to the management platform；
The auxiliary sensing network divides platform to be stored the combustion gas data；
When the management platform, which can not receive the main sensing network, divides the combustion gas data that platform is sent, the management is flat
Platform divides platform to send interaction data to the main sensing network, when the main sensing network divides platform not have the interaction data
During response, the management platform disconnects the connection for dividing platform with the main sensing network, and divides with an auxiliary sensing network
Platform establishes connection；
The auxiliary sensing network that connection is established with the management platform divides platform to send the combustion gas data of storage to the pipe
Platform.
Further, the auxiliary sensing network divides platform by the combustion gas data storage predetermined time, scheduled time mistake
Afterwards, the auxiliary sensing network divides platform to delete the combustion gas data.
Further, the cycle phase that the multiple sensing network divides platform to send combustion gas data is same, the predetermined time
For the cycle.
Further, methods described also includes：Platform is divided to send out when the management platform can not receive the auxiliary sensing network
During the combustion gas data sent, the management platform divides platform to send interaction data to the auxiliary sensing network, when the auxiliary Sensor Network
When network divides the platform not respond to the interaction data, the management platform disconnects the company for dividing platform with the auxiliary sensing network
Connect, and establish and connected in order to obtain combustion gas data with one that auxiliary sensing network other described divides in platform.
Further, methods described also includes：The management platform divides the main sensing network fault message of platform
Send to the service platform；
The service platform sends the fault message to the user platform；
The user platform shows the fault message to prompt user malfunction information；
After the fault message excludes, the management platform recovers the communication for dividing platform with the main sensing network.
Second aspect, the invention provides a kind of Internet of things system, the Internet of things system includes user platform, service is put down
Platform, management platform, multiple sensing networks divide platform and subject table.The subject table is flat by the multiple sensing network point
One in platform communicates to connect with the management platform, and the management platform communicates to connect with the service platform, the service
Platform communicates to connect with the user platform, and the subject table includes gas meter, flow meter, and the multiple sensing network divides platform to include
Main sensing network divides platform and at least one auxiliary sensing network to divide platform.
Wherein, subject table is used to send the combustion gas data collected to the multiple sensing network to divide platform；
The main sensing network divides platform to be used to send the combustion gas data to the management platform；
The auxiliary sensing network divides platform to be used to be stored the combustion gas data；
When the management platform, which can not receive the main sensing network, divides the combustion gas data that platform is sent, the management is flat
Platform divides platform to send interaction data to the main sensing network；
When the main sensing network divides platform not respond to the interaction data, the management platform disconnect with it is described
Main sensing network divides the connection of platform, and divides platform to establish with an auxiliary sensing network and connect；
The auxiliary sensing network that connection is established with the management platform divides platform to send the combustion gas data of storage to the pipe
Platform.
Further, the auxiliary sensing network divides platform to be used for the combustion gas data storage predetermined time, pre- timing
Between after, the auxiliary sensing network divides platform to delete the combustion gas data.
Further, the cycle phase that the multiple sensing network divides platform to send combustion gas data is same, the predetermined time
For the cycle.
Further, when the management platform, which can not receive the auxiliary sensing network, divides the combustion gas data that platform is sent,
The management platform is used to divide platform to send interaction data to the auxiliary sensing network, when the auxiliary sensing network divides platform to institute
When stating interaction data and not responding to, the management platform disconnects the connection for dividing platform with the auxiliary sensing network, and with other institutes
State one that auxiliary sensing network divides in platform and establish connection in order to obtain combustion gas data.
Further, the management platform is additionally operable to divide the fault message of platform to send perception institute the main sensing network
State service platform；
The service platform is used to send the fault message to the user platform；
The user platform is used to show the fault message to prompt user malfunction information；
After the fault message excludes, the management platform recovers the communication for dividing platform with the main sensing network.
Combustion gas data transmission method and Internet of things system provided by the invention based on compound Internet of Things, this method are applied to
Internet of things system.Internet of things system includes user platform, service platform, management platform, multiple sensing networks and divides platform and object
Platform, the subject table include gas meter, flow meter, and the multiple sensing network divides platform to divide platform and at least including main sensing network
One auxiliary sensing network divides platform.Multiple sensing networks divide main sensing network in platform to divide platform to be used to send out the combustion gas data
The management platform is delivered to, auxiliary sensing network divides platform to be used to be stored the combustion gas data.When management platform can not connect
Receive main sensing network divide platform send combustion gas data when, management platform to the main sensing network divide platform send interaction number
According to when the main sensing network divides platform not respond to the interaction data, management platform disconnects and main sensing network point
The connection of platform, and divide platform to establish with an auxiliary sensing network and connect to receive the combustion gas number that auxiliary sensing network divides platform to store
According to.Combustion gas data transmission method and Internet of things system provided by the invention based on compound Internet of Things can ensure that combustion gas data pass
Defeated stability, continuity, reliability and validity.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the composition schematic diagram of Internet of things system provided in an embodiment of the present invention.
Fig. 2 is the flow chart of the combustion gas data transmission method provided in an embodiment of the present invention based on compound Internet of Things.
Fig. 3 is the flow chart of the combustion gas data transmission method provided in an embodiment of the present invention based on compound Internet of Things.
Icon：100- Internet of things system；10- user platforms；20- service platforms；30- management service platforms；40- Sensor Networks
Network divides platform；50- subject tables.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is refer to, the combustion gas data transmission method provided in an embodiment of the present invention based on compound Internet of Things is applied to thing
Networked system 100, the Internet of things system 100 include user platform 10, service platform 20, management platform 30, multiple sensing networks
Divide platform 40 and subject table 50.Wherein, subject table 50 includes gas meter, flow meter, and platform 40 and management can be divided by sensing network
Platform 30 communicates to connect, and with to the data of the sending object platform 50 of management platform 30, or receives the letter that management platform 30 is sent
Number.Management platform 30 communicates to connect with service platform 20, and in the present embodiment, service platform 20 is gas company's service platform,
Service platform 20 communicates to connect with user platform 10, for pushing the information of the transmission of management platform 30 to user platform 10.Management
Platform 30 and service platform 20 can be server.User platform 10 can be general electronic equipment, such as PC
(personal computer, PC), smart mobile phone, tablet personal computer, personal digital assistant (personal digital
Assistant, PDA), mobile internet surfing equipment (mobile Internet device, MID) etc..
Fig. 2 is refer to, the combustion gas data transmission method based on compound Internet of Things is somebody's turn to do and comprises the following steps：
Step S1, subject table, which sends the combustion gas data collected to the multiple sensing network, divides platform.
In the present embodiment, sensing network divides platform 40 to be gateway.The combustion gas data meeting that subject table 50 collects
It is sent to each sensing network and divides platform 40.
Step S2, main sensing network divide platform to send the combustion gas data to the management platform.
In embodiments of the present invention, Internet of things system 100 divides platform 40 including multiple sensing networks, it is readily appreciated that, it is more
Individual sensing network divides platform 40 while will not to send the combustion gas data received to management platform 30, causes energy waste,
Management platform 30 handles more duplicate data, increases operand.Therefore, although multiple sensing networks divide platform 40 to receive
Combustion gas data, but only divide platform to be transmitted data by main sensing network therein, it is necessary to which explanation is, in the present invention
In embodiment, main sensing network divides platform to divide the structure of platform can be the same or different with auxiliary sensing network.It is appreciated that
For the sensing network that data are transmitted to management platform 30 divides platform 40 to be that main sensing network divides platform, senses supplemented by remaining
Network divides platform.Each sensing network divides platform 40 to have a data transmitting period, according to data transmitting period to management
Platform 30 sends combustion gas data, it is preferred that each sensing network divides the data transmitting period of platform 40 identical.
Step S3, auxiliary sensing network divide platform to be stored the combustion gas data.
Although auxiliary sensing network divides platform not send combustion gas data to management platform 30, combustion gas data can be carried out
Storage.It should be noted that auxiliary sensing network divides platform storage combustion gas data to be not permanent, but store a period of time
Delete, the time of the storage can freely be set, but can not be shorter than the data transmitting period that main sensing network divides platform, make
To be preferable, auxiliary sensing network divides the time of platform storage combustion gas data to be the cycle, after storage time reaches, auxiliary Sensor Network
Network divides platform to delete the combustion gas data of storage.
Step S4, when management platform can not receive main sensing network divide platform send combustion gas data when, management platform to
Main sensing network divides platform to send interaction data.
If management platform 30 can not receive the combustion gas data that main sensing network divides platform to send, it may be possible to due to main sensing
The network delay of network, or main sensing network are no synchronous with the time of management platform 30 so that combustion gas data are not instant
Management platform 30 receives.It could also be possible that main sensing network divides platform to break down or damage.In order to verify main Sensor Network
Network divides whether platform breaks down, it is impossible to is communicated, management platform 30 divides platform to send interaction data to main sensing network, please
Ask and divide platform to carry out data interaction with main sensing network.
Step S5, when main sensing network divides platform not respond to the interaction data, management platform disconnects and main biography
Sense network divides the connection of platform, and divides platform to establish with an auxiliary sensing network and connect.
If main sensing network divides platform not respond to the interaction data, it is possible to determine that, main sensing network divides platform
Failure causes the ability for losing data interaction.Now, in order to ensure the stability of combustion gas data transfer, main Sensor Network
Network divides platform to disconnect the connection with management platform 30, is changed to divide platform to be connected with auxiliary sensing network, it is readily appreciated that, management platform 30
One is connected with multiple auxiliary sensing networks divide in platform.
Step S6, the auxiliary sensing network that connection is established with management platform divide platform to send the combustion gas data of storage to described
Management platform.
Auxiliary sensing network divides platform to send the combustion gas data of storage to management platform 30, to ensure the continuous of combustion gas data
With it is complete.
By above step, the combustion gas data transmission method provided in an embodiment of the present invention based on compound Internet of Things can be
When one sensing network divides platform 40 to break down can not to transmit data, platform is divided to carry out combustion gas data by auxiliary sensing network
Transmission, it is ensured that the continuity and integrality of combustion gas data transfer.
In addition, refer to Fig. 3, the combustion gas data transmission method provided in an embodiment of the present invention based on compound Internet of Things may be used also
To comprise the following steps：
Step S7, when management platform, which can not receive the auxiliary sensing network, divides the combustion gas data that platform is sent, management is flat
Platform divides platform to send interaction data to auxiliary sensing network.
Step S8, when auxiliary sensing network divides platform not respond to interaction data, management platform disconnects and auxiliary Sensor Network
Network divides the connection of platform, and establishes and connected in order to obtain combustion gas data with one that other auxiliary sensing networks divide in platform.
When auxiliary sensing network divides platform also to break down, it is flat that management platform 30 changes another auxiliary sensing network point
Platform carries out the transmission of combustion gas data.
The main sensing network is divided the fault message of platform to send the perception service platform by step S9, management platform.
When main sensing network divides the platform to break down, for the ease of dividing platform to tie up the main sensing network to break down
Shield, management platform 30 to service platform 20 send the fault message, it is necessary to explanation, above-mentioned main sensing network divide platform be to
Management platform 30 sends the platform of combustion gas data, divides platform to carry out data transmission when management platform 30 is switched to auxiliary sensing network
When, the sensing network after switching divides platform 40 to divide platform equivalent to main sensing network.
Step S10, service platform send the fault message to the user platform.
Step S11, user platform show the fault message to prompt user malfunction information.
Fault message can be sent to user by service platform 20 by the mode such as short message or application messages push
Platform 10, the information content of push can be to inform that the generation of user malfunction information and inquiry user safeguard the time of failure.
Step S12, after fault message excludes, management platform recovers the communication for dividing platform with main sensing network.
In summary, the embodiments of the invention provide a kind of combustion gas data transmission method and Internet of Things based on compound Internet of Things
Net system, this method are applied to Internet of things system.Internet of things system includes user platform, service platform, management platform, Duo Gechuan
Sense network divides platform and subject table, and the subject table includes gas meter, flow meter, and the multiple sensing network divides platform to include main biography
Sense network divides platform and at least one auxiliary sensing network to divide platform.Multiple sensing networks divide main sensing network in platform to divide platform to use
Sent in by the combustion gas data to the management platform, auxiliary sensing network divides platform to be used to be deposited the combustion gas data
Storage.When management platform, which can not receive main sensing network, divides the combustion gas data that platform is sent, management platform is to the main Sensor Network
Network divides platform to send interaction data, when the main sensing network divides platform not respond to the interaction data, management platform
The connection for dividing platform with main sensing network is disconnected, and divides platform to establish with an auxiliary sensing network and connects to receive auxiliary sensing network
Divide the combustion gas data of platform storage.Combustion gas data transmission method and Internet of things system provided by the invention based on compound Internet of Things
Stability, continuity, integrality, reliability and the validity of combustion gas data transfer can be ensured.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
Claims (10)
1. a kind of combustion gas data transmission method based on compound Internet of Things, it is characterised in that methods described is applied to Internet of Things system
System, the Internet of things system include user platform, service platform, management platform, multiple sensing networks and divide platform and subject table,
The subject table includes gas meter, flow meter, and the multiple sensing network divides platform to divide platform and at least one auxiliary including main sensing network
Sensing network divides platform, and methods described includes：
Subject table, which sends the combustion gas data collected to the multiple sensing network, divides platform；
The main sensing network divides platform to send the combustion gas data to the management platform；
The auxiliary sensing network divides platform to be stored the combustion gas data；
When the management platform can not receive the main sensing network divide platform send combustion gas data when, the management platform to
The main sensing network divides platform to send interaction data, when the main sensing network divides platform not respond to the interaction data
When, the management platform disconnects divides the connection of platform with the main sensing network, and divides platform with an auxiliary sensing network
Establish connection；
Divide platform to send the combustion gas data of storage to the management with the auxiliary sensing network of management platform foundation connection to put down
Platform.
2. the combustion gas data transmission method according to claim 1 based on compound Internet of Things, it is characterised in that the auxiliary biography
Sense network divides platform by the combustion gas data storage predetermined time, and after the scheduled time, the auxiliary sensing network divides platform will
The combustion gas data are deleted.
3. the combustion gas data transmission method according to claim 2 based on compound Internet of Things, it is characterised in that the multiple
The cycle phase that sensing network divides platform to send combustion gas data is same, and the predetermined time is the cycle.
4. the combustion gas data transmission method according to claim 1 based on compound Internet of Things, it is characterised in that methods described
Also include：
When the management platform can not receive the auxiliary sensing network divide platform send combustion gas data when, the management platform to
The auxiliary sensing network divides platform to send interaction data, when the auxiliary sensing network divides platform not respond to the interaction data
When, the management platform disconnects divides the connection of platform with the auxiliary sensing network, and divides platform with auxiliary sensing network other described
In one establish connection in order to obtaining combustion gas data.
5. the combustion gas data transmission method according to claim 1 based on compound Internet of Things, it is characterised in that methods described
Also include：
The main sensing network is divided the fault message of platform to send the perception service platform by the management platform；
The service platform sends the fault message to the user platform；
The user platform shows the fault message to prompt user；
After the fault message excludes, the management platform recovers the communication for dividing platform with the main sensing network.
A kind of 6. Internet of things system, it is characterised in that the Internet of things system include user platform, service platform, management platform,
Multiple sensing networks divide platform and subject table, divided in platform by the multiple sensing network one of the subject table with
The management platform communication connection, the management platform communicate to connect with the service platform, the service platform and the use
Family Platform communication connection, the subject table include gas meter, flow meter, and the multiple sensing network divides platform to include main sensing network point
Platform and at least one auxiliary sensing network divide platform, wherein,
Subject table is used to send the combustion gas data collected to the multiple sensing network to divide platform；
The main sensing network divides platform to be used to send the combustion gas data to the management platform；
The auxiliary sensing network divides platform to be used to be stored the combustion gas data；
When the management platform can not receive the main sensing network divide platform send combustion gas data when, the management platform to
The main sensing network divides platform to send interaction data；
When the main sensing network divides platform not respond to the interaction data, the management platform disconnects and the main biography
Sense network divides the connection of platform, and divides platform to establish with an auxiliary sensing network and connect；
Divide platform to send the combustion gas data of storage to the management with the auxiliary sensing network of management platform foundation connection to put down
Platform.
7. Internet of things system according to claim 6, it is characterised in that the auxiliary sensing network divide platform be used for will described in
The combustion gas data storage predetermined time, after the scheduled time, the auxiliary sensing network divides platform to delete the combustion gas data.
8. Internet of things system according to claim 7, it is characterised in that the multiple sensing network divides platform to send combustion gas
The cycle phase of data is same, and the predetermined time is the cycle.
9. Internet of things system according to claim 6, it is characterised in that when the management platform can not receive the auxiliary biography
When sense network divides the combustion gas data that platform is sent, the management platform is used to divide platform to send interaction number to the auxiliary sensing network
According to when the auxiliary sensing network divides platform not respond to the interaction data, the management platform disconnects and the auxiliary biography
Sense network divides the connection of platform, and establishes and connected in order to obtain combustion gas with one that auxiliary sensing network other described divides in platform
Data.
10. Internet of things system according to claim 6, it is characterised in that the management platform is additionally operable to the main biography
Sense network divides the fault message of platform to send the perception service platform；
The service platform is used to send the fault message to the user platform；
The user platform is used to show the fault message to prompt user malfunction information；
After the fault message excludes, the management platform recovers the communication for dividing platform with the main sensing network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710858014.0A CN107835222A (en) | 2017-09-20 | 2017-09-20 | Combustion gas data transmission method and Internet of things system based on compound Internet of Things |
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| CN201710858014.0A CN107835222A (en) | 2017-09-20 | 2017-09-20 | Combustion gas data transmission method and Internet of things system based on compound Internet of Things |
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Family
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919308A (en) * | 2018-07-09 | 2018-11-30 | 北京市燃气集团有限责任公司 | A kind of combustion gas data collection system based on Beidou Differential positioning |
| CN114637270A (en) * | 2022-05-17 | 2022-06-17 | 成都秦川物联网科技股份有限公司 | Intelligent manufacturing industry Internet of things based on distributed control and control method |
| CN115330361A (en) * | 2022-10-14 | 2022-11-11 | 成都秦川物联网科技股份有限公司 | Indoor safety-based gas leakage prediction method and intelligent gas Internet of things system |
-
2017
- 2017-09-20 CN CN201710858014.0A patent/CN107835222A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919308A (en) * | 2018-07-09 | 2018-11-30 | 北京市燃气集团有限责任公司 | A kind of combustion gas data collection system based on Beidou Differential positioning |
| CN114637270A (en) * | 2022-05-17 | 2022-06-17 | 成都秦川物联网科技股份有限公司 | Intelligent manufacturing industry Internet of things based on distributed control and control method |
| CN114637270B (en) * | 2022-05-17 | 2022-08-23 | 成都秦川物联网科技股份有限公司 | Intelligent manufacturing industry Internet of things based on distributed control and control method |
| US11681283B1 (en) | 2022-05-17 | 2023-06-20 | Chengdu Qinchuan Iot Technology Co., Ltd. | Intelligent manufacturing industrial Internet of Things based on distributed control, control methods and media thereof |
| CN115330361A (en) * | 2022-10-14 | 2022-11-11 | 成都秦川物联网科技股份有限公司 | Indoor safety-based gas leakage prediction method and intelligent gas Internet of things system |
| US11776378B2 (en) | 2022-10-14 | 2023-10-03 | Chengdu Qinchuan Iot Technology Co., Ltd. | Methods for predicting gas leakage based on indoor safety and smart gas Internet of Things systems |
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Application publication date: 20180323 |