CN104574848B - A kind of alarm method of gas alarm device - Google Patents
A kind of alarm method of gas alarm device Download PDFInfo
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- CN104574848B CN104574848B CN201510018667.9A CN201510018667A CN104574848B CN 104574848 B CN104574848 B CN 104574848B CN 201510018667 A CN201510018667 A CN 201510018667A CN 104574848 B CN104574848 B CN 104574848B
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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
The present invention relates to a kind of alarm method of gas alarm device, preset first threshold value, safe concentration rate of change and gas concentration rate of change are higher than the early warning duration of safe concentration rate of change in gas alarm device；When gas concentration rate of change higher than safe concentration rate of change and duration is more than early warning duration, but gas concentration is less than first threshold, and gas alarm device enters pre-alarm state, sends pre-alarm；When gas concentration rises above first threshold, gas alarm device enters danger warning state, sends danger warning.The gas user of the present invention will not be absorbed in a hurry because of the danger warning sound for hearing high-decibel suddenly, and the old man or child decreased in family gets a fright, and reduces conventional gas alarm and user is created disturbances to；Because just it has been suggested that user's gas concentration is rising before combustion gas reaches alarm threshold value, user just has an opportunity to find root immediately, is preventive from possible trouble, improves security.
Description
Technical field
The present invention relates to signal alarm technical field, more particularly to a kind of alarm method of gas alarm device.
Background technology
With combustion gas such as coal gas, natural gas, biogas as a kind of cleaning, the environmentally friendly energy into most of families, to protect
The safety that uses of combustion gas is demonstrate,proved, fuel gas alarm also gradually come by popularization.The alarm side for the gas security sold currently on the market
Method is：Default one threshold value more much lower than dangerous concentrations (be usually 25%LEL, i.e. explosion ratio lower limit 25%), work as prison
Measure in environment gas concentration and send sound and light alarm signal higher than the threshold value, user can cancel manually sound and light alarm signal or
Remove sound and light alarm signal after dangerous matter sources automatically to cancel, as shown in Fig. 1 time diagram.
This method the disadvantage is that, because alarm threshold value step-up error is big, can be created disturbances to because false alarm is produced to user,
Also need to user make a desperate move closing alarm.Therefore a kind of fuel gas alarm is needed, ensure that and carry using new alarm method
While for alarm enough accurately and timely, user is not caused to create disturbances to.
The content of the invention
It is an object of the invention to overcome the defect of prior art, and provide a kind of alarm side of gas alarm device
Method.
To achieve the above object, the present invention uses following technical scheme：A kind of alarm method of gas alarm device, including
Following steps：
Preset first threshold value, safe concentration rate of change and early warning duration in gas alarm device；
When gas concentration rate of change is less than higher than safe concentration rate of change duration more than early warning duration, but gas concentration
First threshold, gas alarm device enters pre-alarm state, sends pre-alarm signal；
When gas concentration is higher than first threshold, gas alarm device enters danger warning state, sends danger warning letter
Number.
Further, the danger warning state can not manually be cancelled by user, can only be less than in the gas concentration detected
First threshold and cancel automatically.
Further, the Second Threshold less than first threshold is additionally provided with gas alarm device；
When gas concentration rate of change is higher than safe concentration rate of change and the state duration is more than early warning duration, combustion gas
When concentration is higher than Second Threshold but is less than first threshold, gas alarm device enters abnormal alarm state, sends abnormal alarm.
Further, the 3rd threshold value less than Second Threshold is additionally provided with gas alarm device；
Danger warning state can not manually be cancelled by user, only when detecting gas concentration less than three threshold values, combustion
Gas warning device is cleared alarm condition, into normal condition.
Further, the first abnormality alarm duration, the second abnormality alarm duration are preset in gas alarm device, when combustion gas is dense
Spend rate of change and be more than the first abnormality alarm duration higher than safe concentration rate of change duration, and detect gas concentration and be higher than
Second Threshold, gas alarm device enters abnormal alarm state by precaution alarm state；
The abnormal alarm state is cancelled automatically in the gas concentration detected less than Second Threshold or the 3rd threshold value,
Can manually it be cancelled by user；
If manually cancel abnormal alarm state, by the running hours length less than the second abnormality alarm duration it
Afterwards, gas alarm device is again introduced into abnormal alarm state because detecting gas concentration higher than Second Threshold, the abnormal alarm shape
State can not manually be cancelled by user, only cancel automatically less than Second Threshold or the 3rd threshold value in the gas concentration detected；
The first abnormality alarm duration is more than early warning duration, when the first abnormality alarm duration is more than the second abnormality alarm
It is long.
Further, preset security points out duration in gas alarm device, when gas alarm device is in danger warning shape
State, detect gas concentration it is lasting reduction and duration be more than safety instruction duration when, gas alarm device sends safety
Prompting no longer persistently reduces until gas concentration or until normal condition, normal condition is reduced to when detecting gas concentration, fires
Gas warning device, which is cleared, alarms and safety instruction.
Further, described pre-alarm can be chosen pause, can also be chosen to continue executing with, the side for suspending and continuing
Formula is：User inputs in local or local terminal or remote terminal to gas alarm device to suspend or continues to instruct.
Compared with the prior art, the invention has the advantages that：When gas concentration rate of change is higher than safe concentration rate of change simultaneously
And the state duration is more than early warning duration, but gas concentration is less than the first secure threshold, and gas alarm device enters forecast
Alert state, sends pre-alarm, sends the pre-alarm gentleer than danger warning, to point out user's gas concentration to increase,
Need careful strick precaution.The benefit so handled has two：First, user will not be because of the danger warning sound for hearing high-decibel suddenly
It is absorbed in flurried, decreases user and get a fright, reduce conventional gas alarm and user is created disturbances to；Second, because in combustion
Just it has been suggested that user's gas concentration rises before gas arrival alarm threshold value, user just has an opportunity to find root immediately, prevents
Model improves security in possible trouble.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is a kind of alarm timing diagram of conventional gas alarm；
Fig. 2 is the alarm timing diagram of first embodiment of the invention；
Fig. 3 is the alarm timing diagram of second embodiment of the invention；
Fig. 4 is the alarm timing diagram of third embodiment of the invention；
Fig. 5 is the alarm timing diagram of four embodiment of the invention；
Fig. 6 is the alarm timing diagram of fifth embodiment of the invention；
Fig. 7 is the module map for the gas alarm device for realizing the inventive method.
Embodiment
In order to more fully understand the technology contents of the present invention, technical scheme is entered with reference to specific embodiment
One step introduction and explanation.
As shown in figure 1, being a kind of alarm timing diagram of conventional gas alarm, default one more much lower than dangerous concentrations
Threshold value (be usually 25%LEL, i.e. explosion ratio lower limit 25%), when monitoring that gas concentration is sent out higher than the threshold value in environment
Speak visual alarm, user can cancel sound and light alarm signal manually or remove sound and light alarm signal after dangerous matter sources to be taken automatically
Disappear, the shortcoming of this method is：Because alarm threshold value step-up error is big, it can create disturbances to, also need because false alarm is produced to user
Want user to make a desperate move and close alarm.Therefore a kind of fuel gas alarm is needed, offer foot ensure that using new alarm method
While reaching alarm accurately and timely, user is not caused to create disturbances to.
As shown in Fig. 2 being the alarm timing diagram of first embodiment of the invention, a kind of alarm side of gas alarm device
Method, preset first threshold value, safe concentration rate of change and early warning duration T1 in gas alarm device；In 1. place's gas concentration change
Rate is higher than safe concentration rate of change, but gas concentration is less than first threshold, when gas concentration rate of change changes higher than safe concentration
Rate duration is more than after early warning duration T1 arrival 2., but gas concentration is less than first threshold, and gas alarm device enters pre-
Alarm condition, sends pre-alarm；When gas concentration rises above first threshold, gas alarm device enters danger warning shape
State, sends danger warning.
Further, the danger warning state can not manually be cancelled by user, can only be less than in the gas concentration detected
First threshold and cancel automatically.This method is using first threshold, tri- parameters of safe concentration rate of change and early warning duration T1 to combustion
Gas leakage situation is monitored, and adds pre-alarm step, and to the more accurate of alert condition prognosis, alarm method is more
Hommization, rationalization.
As shown in figure 3, being the alarm timing diagram of second embodiment of the invention, a kind of alarm side of gas alarm device
Method, is additionally provided with the Second Threshold less than first threshold in gas alarm device；In 1. place's gas concentration rate of change higher than safety
Change rate of concentration, but gas concentration is less than first threshold, when gas concentration rate of change is higher than safe concentration rate of change duration
After being reached 2. more than early warning duration T1, into pre-alarm state, pre-alarm is sent；3. locating, gas concentration rises above
Second Threshold but less than first threshold when, gas alarm device enter abnormal alarm state, send abnormal alarm；4. locating, firing
Gas concentration rises above first threshold, and gas alarm device enters danger warning state, sends danger warning.Second threshold is set
Value, and abnormality alarm state is set between alert status and danger warning state, it more can accurately react alert situation.
Further, as shown in figure 4, being the alarm timing diagram of third embodiment of the invention, in gas alarm device also
The 3rd threshold value provided with less than Second Threshold；Danger warning state can not manually be cancelled by user, only dense when detecting combustion gas
When degree is less than three threshold values, gas alarm device is cleared alarm condition, into normal condition.Such a method can prevent combustion
Gas user could not pay attention to alert situation, and the irritated signal in hydropac, in the case where alert is not released, clear-cut hand
The dynamic signal for cancelling hydropac, may finally lead to a disaster.
As shown in figure 5, being the alarm timing diagram of four embodiment of the invention, a kind of alarm side of gas alarm device
Method, preset in gas alarm device gas concentration rate of change higher than safe concentration rate of change the first abnormality alarm duration T2,
Second abnormality alarm duration T3；When gas concentration rate of change higher than safe concentration rate of change duration more than the first abnormality alarm
During duration T2, i.e., 4. the running hours length begun to pass through more than the first abnormality alarm duration T2 from 1. reach, and detects
The second secure threshold is risen above to gas concentration, abnormal alarm state is entered by precaution alarm state；
Abnormal alarm state is cancelled automatically in the gas concentration detected less than Second Threshold or the 3rd threshold value, can also
5. locating to cancel manually by user；
User cancels abnormal alarm state manually in the present embodiment, by the continuous work less than the second abnormality alarm duration T3
After making duration, 6. locating to be again introduced into abnormal alarm state because detecting gas concentration higher than Second Threshold again, this is again
Abnormal alarm state can not manually be cancelled by user, only in the gas concentration detected less than Second Threshold or the 3rd threshold value
It is automatic to cancel.Such a mode is to remind user to pay attention to alert situation, alert of making a thorough investigation source, it is to avoid major accident occurs.
First abnormality alarm duration T2 is more than early warning duration T1, when the first abnormality alarm duration T2 is more than the second abnormality alarm
Long T3.
As shown in fig. 6, being the alarm timing diagram of fifth embodiment of the invention, the alarm side of gas alarm device described in one
Method, preset security points out duration T4 in gas alarm device, when gas alarm device is in danger warning state, detects
Gas concentration it is lasting reduction and duration be more than safety instruction duration T4 when, gas alarm device send safety instruction until
Gas concentration no longer persistently reduces or until normal condition, normal condition, gas alarm dress is reduced to when detecting gas concentration
Alarm of clearing is put, normal condition is returned to.Such a method makes user have more accurate to gas leakage situation, recovery situation
Control, understand.
Further, for convenience of user, pre-alarm can be chosen pause, can also be chosen to continue executing with, and suspend
Mode with continuation is：User inputs in local or local terminal or remote terminal to gas alarm device to suspend or continues to refer to
Order.
As shown in fig. 7, being the module map for the gas alarm device for realizing the inventive method, a kind of gas alarm device includes
Microprocessor or the integration module 110 with microprocessor function；Memory 120, preserves threshold data, sets duration data
Deng；Message output module 130, including LCD display 131 and loudspeaker 132 for exhibiting device current state information；Information
Input module 140, including mechanical input 141 and photoelectricity input 142；Wireless communication module 150, including with remote facility channel radio
The long-range communications module 151 of letter and the short-range communication module 152 with local device radio communication；Gas security 160.
The warning message of gas alarm device locally can show user by message output module 130, can also
In the terminal that user remotely-or locally is sent to by wireless communication module 150, such as the calculating of the client equipped with matching
Machine, tablet personal computer, mobile phone etc..
Term " first ", " second " are only used for describing purpose in the present invention, and it is not intended that indicating or implying relatively heavy
The property wanted or the implicit quantity or order for indicating indicated technical characteristic.
Although giving specific embodiment herein for the alarm method of gas alarm device, but it is also possible to be applied to
Other security alarm scenes, supervision on hazardous substances alarm, electromagnetic radiation intensity monitoring, alarming including but not limited in water, have poison gas
Body monitoring, alarming, Smoke Detection alarm.
The technology contents described above that the present invention is only further illustrated with embodiment, in order to which reader is easier to understand,
But embodiments of the present invention are not represented and are only limitted to this, and any technology done according to the present invention extends or recreated, and is sent out by this
Bright protection.
Claims (5)
1. a kind of alarm method of gas alarm device, it is characterised in that comprise the following steps：
In gas alarm device when preset first threshold value, the Second Threshold less than first threshold, safe concentration rate of change, early warning
Long, the first abnormality alarm duration and the second abnormality alarm duration；
When gas concentration rate of change higher than safe concentration rate of change and the state duration is more than early warning duration, but combustion gas is dense
Degree is less than first threshold, and gas alarm device enters pre-alarm state, sends pre-alarm signal；
When gas concentration rate of change higher than safe concentration rate of change and the state duration is more than the first abnormality alarm duration,
When gas concentration is higher than Second Threshold but is less than first threshold, gas alarm device enters abnormal alarm shape by pre-alarm state
State；
The abnormal alarm state is cancelled automatically in the gas concentration detected less than Second Threshold, or is taken manually by user
Disappear；
If cancelling abnormal alarm state manually, after the running hours length less than the second abnormality alarm duration, combustion
Gas warning device is again introduced into abnormal alarm state because detecting gas concentration higher than Second Threshold, and the abnormal alarm state can not
Cancelled manually by user, only cancel automatically less than Second Threshold in the gas concentration detected；
When gas concentration is higher than first threshold, gas alarm device enters danger warning state, sends danger alarm signal.
2. the alarm method of gas alarm device as claimed in claim 1, it is characterised in that the danger warning state can not be by
User cancels manually, can only automatically cancel less than first threshold in the gas concentration detected.
3. the alarm method of gas alarm device as claimed in claim 2, it is characterised in that be additionally provided with gas alarm device
Less than the 3rd threshold value of Second Threshold；
Danger warning state can not manually be cancelled by user, only when detecting gas concentration less than three threshold values, combustion gas report
Alarm device is cleared alarm condition, into normal condition.
4. the alarm method of gas alarm device as described in claim 1 or 3 is any, it is characterised in that in gas alarm device
Interior preset security points out duration, when gas alarm device is in danger warning state, detect gas concentration in lasting reduction and
Duration be more than safety instruction duration when, gas alarm device send safety instruction until gas concentration no longer persistently reduction or
Until normal condition, normal condition is reduced to when detecting gas concentration, gas alarm device is cleared to alarm and carried with safety
Show.
5. the alarm method of gas alarm device as claimed in claim 1, it is characterised in that described pre-alarm can be chosen
Pause, can also be chosen to continue executing with, the mode suspended and continued is：User is in local or local terminal or remote terminal pair
Gas alarm device input pause continues to instruct.
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| CN201510018667.9A CN104574848B (en) | 2015-01-14 | 2015-01-14 | A kind of alarm method of gas alarm device |
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| CN201510018667.9A CN104574848B (en) | 2015-01-14 | 2015-01-14 | A kind of alarm method of gas alarm device |
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| CN104574848A CN104574848A (en) | 2015-04-29 |
| CN104574848B true CN104574848B (en) | 2017-09-12 |
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Address after: 518055 Guangdong city of Shenzhen province Nanshan District Taoyuan Street Xueyuan Road No. 1001 Nanshan Chi Park A7 building 7 floor Patentee after: Shenzhen euribo Technology Co.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Taoyuan Street Xueyuan Road No. 1001 Nanshan Chi Park A7 building 7 floor Patentee before: SHENZHEN ORVIBO TECHNOLOGY Co.,Ltd. Address after: 518055 Guangdong city of Shenzhen province Nanshan District Taoyuan Street Xueyuan Road No. 1001 Nanshan Chi Park A7 building 7 floor Patentee after: SHENZHEN ORVIBO TECHNOLOGY Co.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Taoyuan Street Xueyuan Road No. 1001 Nanshan Chi Park A7 building 7 floor Patentee before: ORVIBO, Inc. |