CN109448329A - A kind of simple accurately combustible gas leak alarm method - Google Patents
A kind of simple accurately combustible gas leak alarm method Download PDFInfo
- Publication number
- CN109448329A CN109448329A CN201811290820.3A CN201811290820A CN109448329A CN 109448329 A CN109448329 A CN 109448329A CN 201811290820 A CN201811290820 A CN 201811290820A CN 109448329 A CN109448329 A CN 109448329A
- Authority
- CN
- China
- Prior art keywords
- testing process
- alarm
- detection
- timing
- flow
- 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.)
- Pending
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of simple accurately combustible gas leak alarm methods, are related to fuel gas safety detection technology field, and the method comprising the steps of 1: enabling and interrupt testing process, detect and start alarm flow when combustable gas concentration is exceeded；Step 2: testing process will be interrupted after alarm flow starting and be switched to timing testing process；Step 3: timing testing process carries out one-time detection at regular intervals, if combustable gas concentration is still exceeded, continues current alarm flow；If combustable gas concentration restores normal, alarm flow is exited, while timing testing process is switched to interruption testing process.Existing two kinds of detection methods are overcome because of the problem of retaining problem that smog may cause detection and alarm inaccuracy in detection cavity there are also shake caused by fuel gas is retained in detection cavity, having certain delay when leading to primary detection to combustible gas alarm.
Description
Technical field
The present invention relates to fuel gas safety detection technology fields, are a kind of simple accurate fuel gas specifically
Leakage alarm method.
Background technique
Present many families are equipped with gas pipeline, this greatly facilitates our life, but user is using natural gas
During due to personal carelessness, be likely to result in the leakage of combustion gas, if effectively detected to the gas leakage in family,
The safety coefficient that user uses can be improved.
The detection method that traditional flammable gas alarm uses has:
The method for interrupting detection: when combustable gas concentration is excessively high, gas security issues high level signal, system MCU
Interrupt pin detect sensor issue signal be considered as alarm.
Timing detection mode: the state of gas security is inquired in system MCU timing, when the height electricity for inquiring sensor sending
Ordinary mail number, then it is assumed that combustable gas concentration is excessively high to alarm.
Above-mentioned two ways respectively has its advantage and disadvantage:
Although first method is more flexibly, when combustable gas concentration is excessively high, energy and alarm, fuel gas exist
In evanishment, since the speed that fuel gas alarm detection intracavity gas dissipates is lower than the external world, so when extraneous fuel gas
It has been dispersed that, certain fuel gas can may be also remained in detection cavity, detection cavity inner sensor detects flammable at this time
Gas concentration may have fluctuation, this may make system micro-control make the judgement of mistake, the feelings of alarm inaccuracy occur
Condition.
Although second method can use the time interval of adjustment detection to solve to retain fuel gas institute in detection cavity
Caused by shake, but when primary detection is to combustible gas alarm, might have certain delay.
Summary of the invention
The purpose of the present invention is to provide a kind of simple accurately combustible gas leak alarm methods, for solving existing skill
The problems in art.
The present invention is solved the above problems by following technical proposals:
A kind of simple accurately combustible gas leak alarm method, method includes the following steps:
Step 1: enabling and interrupt testing process, detect and start alarm flow when combustable gas concentration is exceeded；
Step 2: testing process will be interrupted after alarm flow starting and be switched to timing testing process；
Step 3: timing testing process carries out one-time detection at regular intervals, if combustable gas concentration is still exceeded,
Continue current alarm flow；If combustable gas concentration restores normal, alarm flow is exited, while timing testing process being cut
It is changed to interruption testing process.
The present invention under normal circumstances using interrupt by the way of detecting, in this mode when sensor detects can
Combustion gas bulk concentration generates interrupt signal when exceeded, MCU can receive the signal by interrupt interface in time, and then start alarm stream
Journey.It is at this time that fuel gas is dense in order to eliminate the dither signal generated due to combustable gas concentration after alarm flow unlatching
The detection mode of degree is switched to timing detection mode, i.e. MCU at regular intervals once looks into the state of gas security
It askes, if detection combustable gas concentration is still exceeded at this time, continues current alarm flow, such as detect fuel gas at this time
Concentration restores normal, then exits alarm flow, while will test mode and being changed to interrupt detection mode by timing detection.It overcomes existing
Two kinds of detection methods having are because retaining smog in detection cavity may cause the problem of detection and alarm inaccuracy there are also detection cavities
The problem of inside retaining shake caused by fuel gas, having certain delay when leading to primary detection to combustible gas alarm,
Guarantee first alarm signal timely and accurately, and occur gas leakage after, alarm need not be constantly in detection shape
State, can energy conservation by timing detection.
Preferably, the detection of gas concentration is completed by gas security in the step 1 and step 3, combustion gas sensing
Device generates interrupt signal in the concentration over-standard for detecting fuel gas, is then communicated to MCU, MCU receive interrupt signal it
After start alarm flow, and be switched to timing testing process for testing process is interrupted, can reach dangerous in the concentration of fuel gas
The first time of concentration issues alarm signal automatically, and automatically switches the switching to the testing process of fuel gas, guarantees report
Alert accuracy and timeliness.
Preferably, it is described interrupt testing process, alarm flow and timing testing process starting, exit and convert and lead to
MCU completion is crossed, MCU automatically switches to interrupt testing process and timing testing process and controls opening for alarm flow according to interrupt signal
Dynamic and stopping, the working condition that alarm can be automatically adjusted according to the concentration of extraneous fuel gas are accurately and timely not necessarily to people
Work, it is convenient and practical.
Preferably, the time interval of the timing testing process is 1-10min, and the setting of time interval can be according to reality
Situation is selected, and divulging information, preferable local time interval be can choose at 1-5 minutes, can be selected in poor environment of divulging information
Select the time interval of 5-10min.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) present invention incorporates detection method and timing detection method is interrupted, start to be examined with interruption detection method
It surveys, is cut again when imflammable gas concentration is back to normal when triggering alarm is switched to timing detection by MCU control later
Be changed to interruption detection, overcome well existing two kinds of detection methods because detection cavity in retain smog may cause detection and
The problem for inaccuracy of alarming causes primary detection to fuel gas report there are also shake caused by fuel gas is retained in detection cavity
The problem of having certain delay when alert, guarantees first alarm signal timely and accurately.
(2) gas security of the present invention generates interrupt signal in the concentration over-standard for detecting fuel gas, then transmits
Start alarm flow after receiving interrupt signal to MCU, MCU, and is switched to timing testing process, energy for testing process is interrupted
Alarm signal is issued automatically in the first time that the concentration of fuel gas reaches dangerous concentrations, and is automatically switched to fuel gas
Testing process switching, guarantee alarm accuracy and timeliness.
(3) present invention is using the switching for interrupting testing process and timing testing process, guarantee the accuracy alarmed for the first time and
It allows interruption testing process to be converted to timing testing process while timeliness, detection device is allowed not have to be constantly in detecting state,
It can be energy saving.
Detailed description of the invention
Fig. 1 is the flow diagram of combustible gas leak alarm method of the invention.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
In conjunction with shown in attached drawing 1, a kind of simple accurately combustible gas leak alarm method, comprising:
Step 1: enabling and interrupt testing process, interruption is generated when detecting that combustable gas concentration is exceeded by gas security
Signal, MCU start alarm flow when receiving interrupt signal；
Step 2:MCU will interrupt testing process after alarm flow starting and be switched to timing testing process；
The every 1-10min of step 3:MCU timing testing process carries out one-time detection, if combustable gas concentration is still exceeded,
Continue current alarm flow；If combustable gas concentration restores normal, alarm flow is exited, while timing testing process being cut
It is changed to interruption testing process.
For example alarm is installed in the kitchen in general family, the ventilation condition in kitchen is generally all relatively good, and ordinary circumstance is only
It can close the doors and windows when colder or when wind is bigger, otherwise be not easy to trigger warning device, if sending out in this case
Raw gas leakage, triggering issue alarm signal automatically and switch in the alarm switch interrupted in testing process, alarm switch
It may also be deposited in the detection cavity inside warning device after someone hears the timely measure of alarm signal for timing testing process
Distribute slow in the higher gas residue of a certain amount of concentration, and at this moment the gas concentration in outside air has had reached peace
Full concentration, but if the time interval of timing detection is too short, false alarm may be issued at this moment, so when should say
Between be arranged at intervals on 3min or so.Time interval is too long also bad, because of meeting while issuing alarm signal of warning device
Detection will be interrupted and be switched to timing testing process, if there is no one at home later for triggering alarm, cannot be handled in time, interval time
If too long, primary alarm can just will do it every the corresponding time combustable gas concentration is very high, such as interval time is
Half an hour, that combustable gas concentration is high again also only half an hour alarm once, and people may be allowed to miss time of fire alarming, security risk
It is larger.Interval time is short, even if no one may also allow neighbours to find and then notify party in alert frequency height man.
Some large size indoor public places, such as market, air circulation is relatively poor, and such case occurs fuel gas and lets out
Alarm is triggered after leakage, illustrates that the leakage rate of fuel gas is very big, and corresponding measure is taken to carry out fuel gas
Exclusion is also required to the regular hour, if the interval time of timing detection is too short, the exclusion of fuel gas will call the police frequency if relatively slow
Rate is excessively high, it is likely that can cause the unnecessary fear of personnel in market, examine so appropriate should according to circumstances extend timing
It is the time of survey, generally relatively reasonable in 10min or so.Therefore, we can be according to practical situation to the time of timing detection
Interval is configured.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (4)
1. a kind of simple accurately combustible gas leak alarm method, which is characterized in that method includes the following steps:
Step 1: enabling and interrupt testing process, detect and start alarm flow when combustable gas concentration is exceeded；
Step 2: testing process will be interrupted after alarm flow starting and be switched to timing testing process；
Step 3: timing testing process carries out one-time detection at regular intervals, if combustable gas concentration is still exceeded, continues
Current alarm flow；If combustable gas concentration restores normal, alarm flow is exited, while timing testing process being switched to
Interrupt testing process.
2. simple accurately combustible gas leak alarm method according to claim 1, it is characterised in that: the step 1
The detection of gas concentration is completed by gas security in step 3.
3. simple accurately combustible gas leak alarm method according to claim 1, it is characterised in that: the interruption inspection
Flow gauge, alarm flow and timing testing process starting, exit and convert by MCU complete.
4. simple accurately combustible gas leak alarm method according to claim 1, it is characterised in that: the timing inspection
The time interval of flow gauge is 1-10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811290820.3A CN109448329A (en) | 2018-10-31 | 2018-10-31 | A kind of simple accurately combustible gas leak alarm method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811290820.3A CN109448329A (en) | 2018-10-31 | 2018-10-31 | A kind of simple accurately combustible gas leak alarm method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109448329A true CN109448329A (en) | 2019-03-08 |
Family
ID=65550166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811290820.3A Pending CN109448329A (en) | 2018-10-31 | 2018-10-31 | A kind of simple accurately combustible gas leak alarm method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109448329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021135A (en) * | 2019-03-13 | 2019-07-16 | 赛特威尔电子股份有限公司 | A kind of open fire alarm detection procedure, device, smoke alarm and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881118A (en) * | 2010-09-03 | 2013-01-16 | 中国石油化工股份有限公司 | Portable toxic gas monitoring device and method |
| CN103077588A (en) * | 2012-12-29 | 2013-05-01 | 苏州市职业大学 | Gas leakage alarm monitoring device |
| CN104732729A (en) * | 2015-04-10 | 2015-06-24 | 厦门理工学院 | Energy-saving type flood early warning method and device for garage |
| CN107767614A (en) * | 2017-09-30 | 2018-03-06 | 四川长虹电器股份有限公司 | A kind of smog alarm method and smoke alarm unit |
| CN108629950A (en) * | 2018-04-08 | 2018-10-09 | 浙江警察学院 | Intermittent Smoke Detection warning device based on ESP8266 |
-
2018
- 2018-10-31 CN CN201811290820.3A patent/CN109448329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881118A (en) * | 2010-09-03 | 2013-01-16 | 中国石油化工股份有限公司 | Portable toxic gas monitoring device and method |
| CN103077588A (en) * | 2012-12-29 | 2013-05-01 | 苏州市职业大学 | Gas leakage alarm monitoring device |
| CN104732729A (en) * | 2015-04-10 | 2015-06-24 | 厦门理工学院 | Energy-saving type flood early warning method and device for garage |
| CN107767614A (en) * | 2017-09-30 | 2018-03-06 | 四川长虹电器股份有限公司 | A kind of smog alarm method and smoke alarm unit |
| CN108629950A (en) * | 2018-04-08 | 2018-10-09 | 浙江警察学院 | Intermittent Smoke Detection warning device based on ESP8266 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021135A (en) * | 2019-03-13 | 2019-07-16 | 赛特威尔电子股份有限公司 | A kind of open fire alarm detection procedure, device, smoke alarm and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104851244B (en) | Combustible gas alarm method and combustible gas alarm | |
| EP3936767A2 (en) | Active kitchen safety monitoring system and control method thereof | |
| CN107301757A (en) | A kind of kitchen fuel gas alarm detector and its alarm detection procedure | |
| CN207457221U (en) | A kind of wireless gas detecting early-warning device | |
| CN205402252U (en) | Public clothes gas metering leaks alarm control ware | |
| CN110454686A (en) | A kind of kitchen combustible gas leak alarm detection system | |
| CN208655009U (en) | A kind of intelligent gas system | |
| CN206711349U (en) | A kind of gas safety detection warning device | |
| CN104240449A (en) | Detection alarm | |
| CN105511382A (en) | Gas storage well security intelligent management system | |
| CN109448329A (en) | A kind of simple accurately combustible gas leak alarm method | |
| CN208172972U (en) | A kind of smart home system based on zigbee | |
| CN204390401U (en) | A kind of smog autoalarm | |
| CN112634589B (en) | Household gas intelligent integrated system of anti-leakage and anti-explosion timing switch | |
| CN204087439U (en) | A kind of detecting alarm | |
| CN109373687A (en) | A kind of refrigerator doors cooling gas leakage warning device | |
| CN203260147U (en) | Temperature detection device for early fire in vehicle engine compartment | |
| CN207363707U (en) | One kind note nitrogen machine monitoring system | |
| CN206574218U (en) | A kind of battery power low-power consumption gas leakage alarming device | |
| CN110517456A (en) | A kind of intelligent gas automatically cuts off valve control system and its control method | |
| CN110595072A (en) | Automatic protection device for preventing gas leakage | |
| CN102201149A (en) | Device for centralized monitoring and warning of civil gas leak | |
| CN205375763U (en) | Coal gas detects and early warning system | |
| CN204706133U (en) | The intelligent alarm device that a kind of security protection combines with fire-fighting | |
| CN110196112B (en) | Ignition equipment state detection method and fire detector using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |