CN106815975A - A kind of natural gas leakage detection means with interlink warning function - Google Patents
A kind of natural gas leakage detection means with interlink warning function Download PDFInfo
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- CN106815975A CN106815975A CN201510871782.0A CN201510871782A CN106815975A CN 106815975 A CN106815975 A CN 106815975A CN 201510871782 A CN201510871782 A CN 201510871782A CN 106815975 A CN106815975 A CN 106815975A
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- natural gas
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- 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
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- Environmental & Geological Engineering (AREA)
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Abstract
A kind of natural gas leakage detection means with interlink warning function is the natural gas leakage detection means based on STC12C5A60S2 single-chip microcomputers.Device is detected using MQ-4 gas sensors as concentration of natural gas, gas concentration signal is converted into digital quantity by the A/D converter carried by STC12C5A60S2.When concentration of natural gas exceedes setting value, local node starts alarm, while alarm signal is passed to other users node by embedded Linear Network, finally realizes multi-user's interlink warning.
Description
Technical field
The present invention relates to a kind of detection means, more particularly to a kind of natural gas leakage detection means with interlink warning function.
Background technology
In recent years, with the progress and the continuous improvement of Living consumption of science and technology, increasing resident has used clean energy resource natural gas.While natural gas is that our life brings convenience, the situation of resident's poisoning, blast and fire caused by natural gas leakage in all parts of the country also happens occasionally.In addition, natural gas is the blending constituent gas of colorless and odorless, is difficult to realize, natural gas leakage detection warning device is installed in order to effectively prevent and reduce because of the generation of the accident that natural gas leakage triggers, in resident family very urgent.
But, in existing natural gas leakage detecting instrument instrument, the overwhelming majority is single-user, i.e. natural gas leakage detecting instrument monitors have natural gas leakage only to be alarmed in this user family in environment, even if such equipment is found that the dangerous situation of natural gas leakage in time, user is also possible to cause oneself powerless individually to remove the dangerous condition because of toxic gas poisoning.
The content of the invention
User is also possible to cause oneself powerless problem for individually removing the dangerous condition because of toxic gas poisoning when the purpose of the present invention has been directed to natural gas leakage, devises a kind of natural gas leakage detection means with interlink warning function.
The technical solution adopted for the present invention to solve the technical problems is：Natural gas leakage detection means with interlink warning function is made up of individual node and whole linear topology network point.
Each node of described system is constituted with single-chip microcomputer STC12C5A60S2 as control core including key-press module, gas detection module, display module, sound and light alarm module and two communication modules etc..
The gas signal that described gas sensor MQ-4 is collected by the A/D converter that STC12C5A60S2 is carried be converted into data signal give again STC12C5A60S2 and setting alarm critical value be compared, when gas concentration reaches critical value, send alarm signal.
Described STC12C5A60S2 single-chip microcomputers have two full duplex communication interface UART（Serial ports 1 and serial ports 2）, each serial ports is made up of 2 separate receivers and transmitter, and two serial ports can simultaneously send and receive data.It is easily achieved two requirements of communication interface of a node in the natural gas leakage detecting system with interlink warning function.
Described sound and light alarm module is essential in the natural gas leakage detecting system with interlink warning function, and sound and light alarm module herein includes red green two LEDs and a buzzer.Concrete meaning is as follows：Red green two lamps are simultaneously bright, and system is operated in init state；Green light, red light goes out, and system is operated in normal operating condition；When red, green light goes out, and system is operated in alarm condition.
The topological structure of described system uses linear topology structure.
The beneficial effects of the invention are as follows：A kind of natural gas leakage detecting system with interlink warning function based on embedded Linear Network of invention, realization is monitored automatically in real time to home-use natural gas leakage, and with interlink warning function.First, node structure and Linear Network topological structure are devised.Secondly, system operation flow is described.Finally, by carrying out long-play checking to the monitoring system that four nodes are constituted in the lab, result shows that system can carry out Real-time Collection, alarm to concentration of natural gas, and the deficiency for working independently of conventional natural gas leakage monitoring device is compensate for, with important application value and extensive promotional value.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is system global structure.
Fig. 2 is node block diagram.
Fig. 3 is detection of natural gas circuit.
Fig. 4 is level shifting circuit.
Fig. 5 is two communication interface circuits.
Fig. 6 is that system does flow.
Specific embodiment
As shown in figure 1, the natural gas leakage detection means with interlink warning function is made up of individual node and whole linear topology network point.Herein according to the high real-time and high reliability request of the natural gas leakage detecting system with interlink warning function, and physically the near user node of distance alarm node preferentially receives alarm signal, the near neighbours of distance alarm family preferentially reach the actual demand at alarm scene, propose a kind of embedded linear topology structure for being adapted to the natural gas leakage detecting system with interlink warning function as schemed.In the embedded internet in the system of application linear topology structure, all nodes are all the communication nodes of status equity in whole system, two nodes communication that any one node can be adjacent with its at any time.The major advantage of this topological structure has：（1）Isolation conflict：The communication of any two node, does not interfere with the communication of other nodes；（2）System stabilization：Any one node breaks down, and two small embedded linear network systems being divided into can normally run；（3）Task balance：Any one node is only responsible for and two adjacent communication tasks of node；（4）Extension is easy：Any one point spread gets on and does not interfere with the work of other nodes；（5）Algorithm is simple：It is easily achieved；（6）Real-time is good：Alarm signal is sent to the nearest adjacent node of left and right two of physically distance alarm node first, meets the nearest user of distance alarm user and receives the report for police service first signal, and reaches the requirement at alarm scene earliest.In view of the foregoing, linear topology structure is used in the natural gas leakage detecting system with interlink warning function.
As shown in Fig. 2 in the natural gas leakage detecting system with interlink warning function, the check device in each user family is referred to as a node, node structure block diagram is as shown in Figure 1.Each node is with single-chip microcomputer STC12C5A60S2 as control core, organized including key-press module, gas detection module, display module, sound and light alarm module and two communication modules etc. first, the concentration value of natural gas in environment is detected by MQ-4 gas sensors, the A/D converter that STC12C5A60S2 carries is given in the form of voltage signal and is changed；Then, after being processed through STC12C5A60S2 single-chip microcomputers, display density value, and be compared with alarm critical value, if the concentration value of natural gas exceedes critical value in environment, local alarm equipment alarm is triggered by way of interrupting, and station address（Room number）The left and right adjacent node in embedded Linear Network is passed to by communication module 1 and communication module 2 with warning message.All user nodes so in whole embedded Linear Network can all receive the warning message, and then realize that the function of dangerous situation the whole network interlink warning occurs in a user.
As shown in Figure 3, the gas signal that gas sensor MQ-4 is collected by the A/D converter that STC12C5A60S2 is carried be converted into data signal give again STC12C5A60S2 and setting alarm critical value be compared, when gas concentration reaches critical value, alarm signal is sent, 1,3,4 pin of MQ-4 connect the positive pole of power supply（+5V）, 2,5,6 pin connection ground.The signal for collecting is by being sent to the analog input end of A/D after 1 k Ohmic resistances.
As shown in Figure 4,5, STC12C5A60S2 single-chip microcomputers have two full duplex communication interface UART（Serial ports 1 and serial ports 2）, each serial ports is made up of 2 separate receivers and transmitter, and two serial ports can simultaneously send and receive data.It is easily achieved two requirements of communication interface of a node in the natural gas leakage detecting system with interlink warning function.
As shown in fig. 6, the subject matter that Design of System Software is solved includes：The A/D conversions of concentration of natural gas signal, concentration value shows, button is set, two machine communication and sound and light alarm etc..First, system enters program initialization state, and then, system enters normal operating condition, and the concentration value of natural gas in display environment is understood on display module.As long as the concentration value for monitoring exceedes setting critical value, system can at once carry out sound and light alarm, while this station address is sent to two closest user nodes by two communication interfaces.
Claims (6)
1. a kind of natural gas leakage detection means with interlink warning function, is made up of individual node and whole linear topology network point.
2. a kind of natural gas leakage detection means with interlink warning function according to claim 1, it is characterized in that each node of described system is with single-chip microcomputer STC12C5A60S2 as control core, constituted including key-press module, gas detection module, display module, sound and light alarm module and two communication modules etc..
3. a kind of natural gas leakage detection means with interlink warning function according to claim 1, it is characterized in that the topological structure of described system uses linear topology structure.
4. a kind of natural gas leakage detection means with interlink warning function according to claim 1, it is characterized in that the gas signal that described gas sensor MQ-4 is collected is converted into by the A/D converter that STC12C5A60S2 is carried, and data signal gives STC12C5A60S2 again and setting alarm critical value is compared, when gas concentration reaches critical value, alarm signal is sent.
5. a kind of natural gas leakage detection means with interlink warning function according to claim 1, it is characterized in that described STC12C5A60S2 single-chip microcomputers have two full duplex communication interface UART（Serial ports 1 and serial ports 2）, each serial ports is made up of 2 separate receivers and transmitter, and two serial ports can simultaneously send and receive data；It is easily achieved two requirements of communication interface of a node in the natural gas leakage detecting system with interlink warning function.
6. a kind of natural gas leakage detection means with interlink warning function according to claim 1, it is characterized in that described in the natural gas leakage detecting system with interlink warning function, sound and light alarm module is essential, and sound and light alarm module herein includes red green two LEDs and a buzzer；Concrete meaning is as follows：Red green two lamps are simultaneously bright, and system is operated in init state；Green light, red light goes out, and system is operated in normal operating condition；When red, green light goes out, and system is operated in alarm condition.
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| CN201510871782.0A CN106815975A (en) | 2015-12-02 | 2015-12-02 | A kind of natural gas leakage detection means with interlink warning function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109102680A (en) * | 2018-07-25 | 2018-12-28 | 深圳市理邦精密仪器股份有限公司 | Equipment alarm method and device |
| CN109282149A (en) * | 2017-07-22 | 2019-01-29 | 周尧 | A kind of natural gas line leakage active detecting device |
-
2015
- 2015-12-02 CN CN201510871782.0A patent/CN106815975A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282149A (en) * | 2017-07-22 | 2019-01-29 | 周尧 | A kind of natural gas line leakage active detecting device |
| CN109102680A (en) * | 2018-07-25 | 2018-12-28 | 深圳市理邦精密仪器股份有限公司 | Equipment alarm method and device |
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Application publication date: 20170609 |
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| WD01 | Invention patent application deemed withdrawn after publication |