CN106652367A - IoT-based gas intelligent monitoring system - Google Patents
IoT-based gas intelligent monitoring system Download PDFInfo
- Publication number
- CN106652367A CN106652367A CN201710060294.0A CN201710060294A CN106652367A CN 106652367 A CN106652367 A CN 106652367A CN 201710060294 A CN201710060294 A CN 201710060294A CN 106652367 A CN106652367 A CN 106652367A
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- CN
- China
- Prior art keywords
- switch
- control
- microprocessor
- phone interface
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to an IoT-based gas intelligent monitoring system including a power supply system, a control module, a gas sensor, a relay module and an Android mobile phone interface management system, the gas sensor monitors gas pipelines, the control module judges the data collected by the gas sensor and transmits the detection data and alarm information to the Android mobile phone interface management system, the Android mobile phone interface management system receives the uploaded data and alarm information, and sends the command along the original path to the control module, and the control module controls the relay module to act. The IoT-based gas intelligent monitoring system can timely receive the alarm information and remotely controls the pipeline valves, exhaust valves and windows; when the concentration does not exceed the standard, the system interrupts data upload, so that the power consumption is greatly reduced. By means of the mixed use of dry batteries and rechargeable batteries, the system can work steadily in the lack of light or other bad weather.
Description
Technical field
The present invention relates to a kind of coal gas intelligent monitor system, and in particular to a kind of coal gas intellectual monitoring system based on Internet of Things
System.
Background technology
Coal gas possesses extremely active chemical property as the requisite valuable source of the modern life, and with easy
Combustion explosion hazard, grave danger is constituted once it there is leakage accident by the security of the lives and property for giving people the people.
At present, monitoring the method for gas piping mainly includes following three kinds：
(1) before acquisition alarm or buzzer are installed in end, the conducting report after gas sensor senses gas leak
Alert circuit is reported to the police, ability of this method without long-range monitoring.
(2) magnetic valve is installed in the duct, gas sensor is sensed and close after gas leak magnetic valve.This method exists
When magnetic valve breaks down, user cannot discover, and cannot also take other measures to remedy.
(3) in user interface development management system, gas sensor timing sends concentration information to user side.This method
Only there is the function of long-range monitoring, the ability without remotely control slave computer, and As time goes on data volume is very huge.
From the foregoing, it will be observed that existing coal gas monitoring system all has some shortcomings：How to solve in pipe electromagnetic valve failure
Certainly leakage problem；When user not in leak scene when, how remotely to solve leakage problem；System operation for a period of time after, such as
What solves mass data being deposited in Subscriber Management System etc..
The content of the invention
It is an object of the invention to provide a kind of coal gas intelligent monitor system based on Internet of Things.
The technical scheme for realizing the object of the invention is：A kind of coal gas intelligent monitor system based on Internet of Things, monitoring system
Including electric power system, control module, gas sensor, relay module and Android phone interface managing system；
The control module respectively with electric power system, gas sensor, relay module and Android phone interface management
System is connected；
The gas sensor is used to be monitored gas piping；
Control module is used to judge the data of gas sensor collection, and data and warning message are sent to
Android phone interface managing system；
The Android phone interface managing system be used for receive upload data and warning message, and will order along
Control module, control module control relay module action are reached under original route.
Compared with prior art, its advantage is the present invention：
(1) present invention is acquired by control module by gas sensor to gas piping real-time monitoring to its data
And analysis, Android phone interface managing system, number of the user to upload are transferred to by GPRS communication modules by control gateway
According to being judged with warning message, and order is reached into microprocessor, microprocessor driven relay module along under original route
Action, allows users to, to gas piping real-time monitoring and process in time, make remotely control more convenient, quick；
(2) it is present invention power supply by chargeable lithium cell in the case where illumination is good；When illumination condition is bad, by
Dry cell is present invention power supply, it is ensured that the continuity and reliability of whole system work；Electric power system block is by power supply electricity
Road automatically controls, and works independently, uncontrolled module management；
(3) the coal gas intelligent monitor system its communication ability based on Internet of Things of the invention is strong, and data are accurate；
(4) when concentration is not exceeded, system interrupts data upload, greatly reduces power consumption.
Description of the drawings
Fig. 1 is structural representation of the present invention based on the coal gas intelligent monitor system of Internet of Things.
Fig. 2 is the main program flow chart of the control gateway of the present invention.
Fig. 3 is the main program flow chart of the Android phone interface managing system of the present invention.
Specific embodiment
With reference to Fig. 1, a kind of coal gas intelligent monitor system based on Internet of Things of the present invention, monitoring system includes power supply system
System, control module, gas sensor, relay module and Android phone interface managing system；
The control module respectively with electric power system, gas sensor, relay module and Android phone interface management
System is connected；
The gas sensor is used to be monitored gas piping；
Control module is used to judge the data of gas sensor collection, and detection data and warning message are transmitted
Give Android phone interface managing system；
The Android phone interface managing system be used for receive upload data and warning message, and will order along
Control module, control module control relay module action are reached under original route.
Further, the control module include microprocessor, first switch, second switch, WIFI wireless communication modules,
Control gateway and GPRS communication modules；
The microprocessor is connected by second switch with gas sensor, by first switch and WIFI radio communication molds
Block, control gateway and the connection of GPRS communication modules；
The microprocessor detects gas concentration value by periodically opening second switch, control gas sensor, and will
Detection data after amplification is uploaded to microprocessor；
The microprocessor is compared the detection data of upload with the alarm threshold value of setting, if more than given threshold
Open first switch；The control gateway is by GPRS communication modules by alarm information pushing to Android phone interface management
System, control gateway receives to be instructed by WIFI wireless communication modules after instruction sends into microprocessor；Microprocessor driven
Relay module action.
Further, the relay module is used to close pipeline valve.
Further, the relay module is additionally operable to open exhaust outlet valve and window.
Further, the control module also includes the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit, point
It is not arranged between electric power system and microprocessor, first switch communicates with WIFI wireless communication modules, control gateway and GPRS
Between module, between second switch and gas sensor.
Further, first stabilized circuit outputting voltage be 3.3V, the second stabilized circuit outputting voltage be 4V, the 3rd
Stabilized circuit outputting voltage is 5V.
Further, the control gateway is additionally operable to after the instruction for receiving Android phone interface managing system, to
Android phone interface managing system sends acknowledgement frame；If acknowledgement frame is not received within the time for setting at once again
Send, until receiving acknowledgement frame or transmission times reaches setting value.
Further, the electric power system includes solar panels, charging circuit, chargeable lithium cell, power control circuit
And dry cell, power control circuit is connected respectively with chargeable lithium cell and dry cell, the solar panels, charging circuit and can
Charged lithium cells are sequentially connected, and constitute solar powered module, and the power control circuit is used to select solar powered module
Or dry cell is powered.
Further, the power control circuit is connected respectively with the first mu balanced circuit, first switch and second switch.
Described microprocessor chip is preferably CC2530 wireless singlechips, and described switch S1 and switch S2 is that hilted broadsword is double
Analog switch is thrown, described gas sensor model is preferably MQ-4.
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment.
Embodiment
With reference to Fig. 1, a kind of coal gas intelligent monitor system based on Internet of Things, including electric power system, control module, gas are passed
Sensor, relay module and Android phone interface managing system, control module respectively with electric power system, gas sensor, after
Electrical appliance module is connected with Android phone interface managing system.
Described electric power system includes solar panels, charging circuit, chargeable lithium cell, power control circuit and dry electricity
Pond, power control circuit is connected respectively with chargeable lithium cell and dry cell, solar panels, charging circuit, chargeable lithium cell
It is sequentially connected.
Described control module include microprocessor, WIFI wireless communication modules, control gateway, GPRS communication modules, the
One switch S1, second switch S2, the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit；
Power control circuit, the first mu balanced circuit, microprocessor are sequentially connected；
First switch S1 is connected with second switch S2；
Microprocessor respectively with first switch S1, second switch S2, WIFI wireless communication module, gas sensor, relay
Device module is connected；
WIFI wireless communication modules, control gateway, GPRS communication modules are bi-directionally connected successively；
Android phone interface managing system is connected with GPRS communication modules；
Second switch S2, the 3rd mu balanced circuit, gas sensor are sequentially connected；
First switch S1 is connected with the second mu balanced circuit, the second mu balanced circuit respectively with WIFI wireless communication modules, control
Gateway, GPRS communication modules are connected.
The microprocessor chip that the present embodiment is used is preferably CC2530 wireless singlechips, it use two crystal oscillators, one
The 32MHz of high frequency, another is the 32.768KHz of low frequency, high-frequency crystal oscillator works in radio-frequency receiving-transmitting, low frequency crystal oscillator be in order to
Power consumption is reduced, internal some circuits are closed in chip sleep, made them and worked with extremely low frequency, reach the mesh of low-power consumption
's.
The present invention carried out a data acquisition per 15 minutes based on the coal gas intelligent monitor system of Internet of Things, i.e., by gas
Body sensor detects the gas concentration value of a gas piping.During signals collecting, second switch S2 is opened by microprocessor driven,
To electricity on gas sensor, signals collecting is carried out after power good.After collection terminates, second switch S2, cut-out are closed immediately
Power supply.Whole signal acquisition process takes around 100 milliseconds, i.e., 0.1 second.Transistor (cascode level positive-negative-positive is used after signals collecting
Triode) amplify current value, it can flow through the current control colelctor electrode of base stage and electric current and the synchronization of emitter by adjusting
Change, reaches the purpose of Small current control high current.The amplification of electric current, will appear as the stronger of sensitive monitoring performance.So, very
Little accident to leak the coal gas can also be detected.
After signals collecting, judged by microprocessor and analyzed.The signal of gas sensor collection send after amplification
Enter microprocessor, it is compared with threshold voltage during warning set in advance to decide whether to report to the police.The signal of collection is connect
Enter the positive input of comparator, backward end accesses alarming value circuit.
When positive terminal voltage value is more than backward end, illustrate that concentration value alreadys exceed the alarming value for setting, now, compare
Device exports a low level.Meanwhile, microprocessor driven first switch S1 connects control gateway, is led to by GPRS by control gateway
Letter module is by alarm information pushing to Android phone interface managing system.Control gateway receives wireless by WIFI after instruction
Communication module will be instructed and send into microprocessor, by microprocessor driven relay module action, control the main program flow of gateway
As shown in Figure 2.Control gateway portion spi bus connect the P0.3-P0.7 mouths of single-chip microcomputer, using TCP_SERVER and TCP_
Two kinds of network connection modes of CLIENT are receiving and transmission data.When microprocessor driven first switch S1 connects control gateway
Afterwards, control to set up connection by WIFI wireless modes between gateway and microprocessor, data can be in control gateway and microprocessor
It is transmitted between device.Control gateway is received and after the data of microprocessor data is pushed directly to by GPRS communication modules
Android phone interface managing system.After the completion of data is activation, control gateway enters immediately standby mode, waits management system
Issue an order.After receiving the packet of management system, the extraction that gateway enters line command to packet is controlled, while opening TCP_
The network connection mode of CLIENT sends connection request to microprocessor.And the oracle listener of microprocessor is waiting Wait Order,
Connection is set up after information matches success between control gateway and microprocessor, control gateway passes through the packet after process
WIFI communications are sent to microprocessor.Packet is assigned and after end microprocessor can be waited to pass back back by control gateway
Packet is answered, if not receiving packet at the appointed time, control gateway to Subscriber Management System such as reports an error at the system to be managed
System assigns other instructions, if receiving response data bag just represents that an alarm procedure terminates, this can be avoided terminal from performing
Error during order causes more serious consequence.
When concentration is not exceeded, microprocessor will no longer drive WIFI wireless communication modules, control gateway, GPRS communication moulds
The work of block, Android phone interface managing system and relay module, can so greatly reduce the power consumption of whole system.Such as
Fruit is working properly always, then need not upload data to Android phone interface managing system, and once micro- place was removed per 12 hours
The data of reason device and control gateway, it is to avoid because huge data volume causes system operation slow and stagnates.
Android phone interface managing system remotely assigns instruction by receiving after warning message, assign closing valve by
Exhaust outlet and window can be again opened while button order, it is to avoid serious consequence can be produced when valve breaks down.User instruction elder generation
By reaching control gateway under GPRS communication patterns, in order to ensure the instruction of user can be successfully executed, packet command is sent out
Send the acknowledgement frame that the gateway to be controlled such as meeting sends after terminating.If not receiving confirmation within the time for setting at once
Resend, until receiving acknowledgement frame or transmission times reaches setting value, the main flow of Android phone interface managing system
Journey is as shown in Figure 3.The network programming that user side is directly provided using Android, is directed to TCP transmission, Android operation system
There is provided friendly Socket programming supports.Programming step is as follows：Create a Socket in client first and difference is initial
Change server and client side, the information such as IP address and port numbers for needing to indicate connection server is that connection therebetween is done
Prepare.Then, local ServerSocket is monitored in port cycle, is received server after connection request and is opened TCP_
The TCP connections that CLIENT_SOCKET is entered under TCP_CLIENT patterns.The present invention after successful connection, user side management system
Operational order is sent, server by utilizing InputStreamReader and OutputStreamWriter are written and read process.
After Socket objects are using finishing, first associated all iostreams are closed, recall Close () closings
Socket。
Microprocessor is received carries out contents extraction and command analysis after the packet instruction for controlling gateway, the present invention is extracted
The position data of level are represented in instruction.If low level represents the instruction of Subscriber Management System to close gas piping magnetic valve
Door, then triode ON, so that relay contact adhesive, motor running goes to perform out code.After operation terminates, gas
Sensor and microprocessor reenter normal monitoring pattern.
The invention provides a coal gas intelligent monitor system based on Internet of Things, due to the system when concentration is not exceeded
Interrupt data to upload, greatly reduce power consumption；Dry cell and rechargeable battery are used in mixed way, it is ensured that system is not enough in illumination
Deng with steady operation system being made to have the advantages that reliability is high under bad weather, the intellectual monitoring to gas concentration is realized.
Additionally, as the extensive of smart mobile phone is applied and the good man-machine interaction of android system and transplantability, whole system has
The advantages of simple to operate, easy to use, versatility is good, with higher using value and extremely wide range of application.
Claims (9)
1. a kind of coal gas intelligent monitor system based on Internet of Things, it is characterised in that monitoring system includes electric power system, control mould
Block, gas sensor, relay module and Android phone interface managing system；
The control module respectively with electric power system, gas sensor, relay module and Android phone interface managing system
It is connected；
The gas sensor is used to be monitored gas piping；
Control module is used to judge the data of gas sensor collection, and data and warning message are sent to
Android phone interface managing system；
The Android phone interface managing system is used to receive data and the warning message for uploading, and will order along Yuan Lu
Control module, control module control relay module action are reached under footpath.
2. the coal gas intelligent monitor system based on Internet of Things according to claim 1, it is characterised in that the control module
Including microprocessor, first switch, second switch, WIFI wireless communication modules, control gateway and GPRS communication modules；
The microprocessor is connected by second switch with gas sensor, by first switch and WIFI wireless communication modules,
Control gateway and the connection of GPRS communication modules；
The microprocessor will be amplified by periodically opening second switch, control gas sensor detection gas concentration value
Detection data afterwards is uploaded to microprocessor；
The microprocessor is compared the detection data of upload with the alarm threshold value of setting, opens if more than given threshold
First switch；The control gateway passes through GPRS communication modules by alarm information pushing to Android phone interface managing system,
Control gateway receives to be instructed by WIFI wireless communication modules after instruction sends into microprocessor；Microprocessor driven relay
Module action.
3. the coal gas intelligent monitor system based on Internet of Things according to claim 1 and 2, it is characterised in that the relay
Device module is used to close pipeline valve.
4. the coal gas intelligent monitor system based on Internet of Things according to claim 3, it is characterised in that the relay mould
Block is additionally operable to open exhaust outlet valve and window.
5. the coal gas intelligent monitor system based on Internet of Things according to claim 2, it is characterised in that the control module
Also include the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit, be separately positioned on electric power system and microprocessor it
Between, between first switch and WIFI wireless communication modules, control gateway and GPRS communication modules, second switch and detector
Between.
6. the coal gas intelligent monitor system based on Internet of Things according to claim 5, it is characterised in that first voltage stabilizing
Circuit output voltage is 3.3V, and the second stabilized circuit outputting voltage is 4V, and the 3rd stabilized circuit outputting voltage is 5V.
7. the coal gas intelligent monitor system based on Internet of Things according to claim 2, it is characterised in that the control gateway
After being additionally operable to the instruction for receiving Android phone interface managing system, send to Android phone interface managing system and confirm
Frame；Resend at once if acknowledgement frame is not received within the time for setting, until receiving acknowledgement frame or transmission times reaches
To setting value.
8. the coal gas intelligent monitor system based on Internet of Things according to claim 1 or claim 2, it is characterised in that the power supply system
System includes solar panels, charging circuit, chargeable lithium cell, power control circuit and dry cell, power control circuit respectively with
Chargeable lithium cell is connected with dry cell, and the solar panels, charging circuit and chargeable lithium cell are sequentially connected, and constitutes the sun
Energy supply module, the power control circuit is used to select solar powered module or dry cell to be powered.
9. the coal gas intelligent monitor system of Internet of Things is based on according to claim 8, it is characterised in that the power supply electricity
Road is connected respectively with the first mu balanced circuit, first switch and second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060294.0A CN106652367A (en) | 2017-01-24 | 2017-01-24 | IoT-based gas intelligent monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060294.0A CN106652367A (en) | 2017-01-24 | 2017-01-24 | IoT-based gas intelligent monitoring system |
Publications (1)
| Publication Number | Publication Date |
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| CN106652367A true CN106652367A (en) | 2017-05-10 |
Family
ID=58841474
Family Applications (1)
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|---|---|---|---|
| CN201710060294.0A Pending CN106652367A (en) | 2017-01-24 | 2017-01-24 | IoT-based gas intelligent monitoring system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132800A (en) * | 2017-06-22 | 2017-09-05 | 四川云达科技有限公司 | Telesecurity monitoring system based on natural gas |
| CN107888414A (en) * | 2017-11-03 | 2018-04-06 | 杭州钛比科技有限公司 | A kind of biogas leakage monitoring system based on NB IoT |
| CN108494865A (en) * | 2018-03-30 | 2018-09-04 | 苏州安家物联科技有限公司 | A kind of long distance wireless solenoid valve control system based on Internet of Things |
| CN108629951A (en) * | 2018-05-21 | 2018-10-09 | 浙江千亿家和智慧能源科技有限公司 | A kind of Intelligent combustible gas alarm system |
| CN108922126A (en) * | 2018-07-06 | 2018-11-30 | 四川长虹电器股份有限公司 | A kind of natural gas leakage alarm system and alarm method |
| CN109188958A (en) * | 2018-08-21 | 2019-01-11 | 贝飞云 | A kind of kitchen fuel gas leakage control device |
| CN110471295A (en) * | 2019-07-12 | 2019-11-19 | 柳州铁道职业技术学院 | A kind of household gas leak intelligent monitor system |
| CN112880746A (en) * | 2021-02-01 | 2021-06-01 | 国网安徽省电力有限公司淮南供电公司 | Water supply system monitoring system and method for transformer substation and office place |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4486231B2 (en) * | 2000-07-25 | 2010-06-23 | 矢崎総業株式会社 | Gas leak reporting system |
| CN102831753A (en) * | 2012-08-16 | 2012-12-19 | 上海霖睿自控设备有限公司 | Solar gas detecting and alarming system |
| CN203135479U (en) * | 2013-01-18 | 2013-08-14 | 西北农林科技大学 | Self-powered environmental monitoring equipment |
| CN204286482U (en) * | 2014-10-27 | 2015-04-22 | 广东石油化工学院 | Petrochemical industry plant area toxic gas leaks on-line monitoring system |
| CN105425596A (en) * | 2015-11-02 | 2016-03-23 | 苏州美达瑞电子有限公司 | Intelligent household gas monitoring system based on ZigBee |
| CN205194044U (en) * | 2015-10-20 | 2016-04-27 | 青岛中科软件股份有限公司 | Gas wireless sensor's for pipeline network node |
-
2017
- 2017-01-24 CN CN201710060294.0A patent/CN106652367A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4486231B2 (en) * | 2000-07-25 | 2010-06-23 | 矢崎総業株式会社 | Gas leak reporting system |
| CN102831753A (en) * | 2012-08-16 | 2012-12-19 | 上海霖睿自控设备有限公司 | Solar gas detecting and alarming system |
| CN203135479U (en) * | 2013-01-18 | 2013-08-14 | 西北农林科技大学 | Self-powered environmental monitoring equipment |
| CN204286482U (en) * | 2014-10-27 | 2015-04-22 | 广东石油化工学院 | Petrochemical industry plant area toxic gas leaks on-line monitoring system |
| CN205194044U (en) * | 2015-10-20 | 2016-04-27 | 青岛中科软件股份有限公司 | Gas wireless sensor's for pipeline network node |
| CN105425596A (en) * | 2015-11-02 | 2016-03-23 | 苏州美达瑞电子有限公司 | Intelligent household gas monitoring system based on ZigBee |
Non-Patent Citations (1)
| Title |
|---|
| 李忍忍等: ""基于Android的气体安防及无线控制系统的设计"", 《计算机与网络》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132800A (en) * | 2017-06-22 | 2017-09-05 | 四川云达科技有限公司 | Telesecurity monitoring system based on natural gas |
| CN107888414A (en) * | 2017-11-03 | 2018-04-06 | 杭州钛比科技有限公司 | A kind of biogas leakage monitoring system based on NB IoT |
| CN108494865A (en) * | 2018-03-30 | 2018-09-04 | 苏州安家物联科技有限公司 | A kind of long distance wireless solenoid valve control system based on Internet of Things |
| CN108629951A (en) * | 2018-05-21 | 2018-10-09 | 浙江千亿家和智慧能源科技有限公司 | A kind of Intelligent combustible gas alarm system |
| CN108922126A (en) * | 2018-07-06 | 2018-11-30 | 四川长虹电器股份有限公司 | A kind of natural gas leakage alarm system and alarm method |
| CN109188958A (en) * | 2018-08-21 | 2019-01-11 | 贝飞云 | A kind of kitchen fuel gas leakage control device |
| CN110471295A (en) * | 2019-07-12 | 2019-11-19 | 柳州铁道职业技术学院 | A kind of household gas leak intelligent monitor system |
| CN112880746A (en) * | 2021-02-01 | 2021-06-01 | 国网安徽省电力有限公司淮南供电公司 | Water supply system monitoring system and method for transformer substation and office place |
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Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |