CN103366486A - Fire behavior detector and timing method thereof - Google Patents
Fire behavior detector and timing method thereof Download PDFInfo
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- CN103366486A CN103366486A CN2012100970070A CN201210097007A CN103366486A CN 103366486 A CN103366486 A CN 103366486A CN 2012100970070 A CN2012100970070 A CN 2012100970070A CN 201210097007 A CN201210097007 A CN 201210097007A CN 103366486 A CN103366486 A CN 103366486A
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Abstract
The invention provides a fire behavior detector and a timing method thereof. Through the method, a detector clock is set by adding different operations to a test switch of the detector. The method comprises that whether the test switch is triggered in a first preset period after a power switch is switched on is detected; and if the test switch is triggered, a timer in the detector is started, wherein the timer is used for timing so that the detector provides non-urgent alarm only in a prescribed period.
Description
Technical field
The present invention relates in general to a kind of fire case detector, relates in particular to a kind of fire case detector with timing function.
Background technology
Traditional fire case detector (Fire detector) can provide two class alarms usually, and one is for for example detecting the critical alarm of the condition of a fire, and another is nonurgent alarms such as battery electric quantity deficiency, certain sensor fault.Nonurgent alarm only is that reminding user is in time changed battery, related device or carried out necessary maintenance.And, traditional fire case detector for time of sending of nonurgent alarm without any restriction.This is because traditional fire case detector is installed in the unoccupied part almost such as some nights such as office building, shopping center usually, even thereby some nonurgent alarms also occuring also can not bring negative effect night.
The family expenses fire case detector progressively comes into the market in recent years, and its majority is installed in kitchen, living room of family etc. and locates.In this case, have a rest night in order not affect the user, require detector after detecting the nonurgent alarm of battery undervoltage for example, only report to the police by day, do not report to the police night.This just requires the detector can resolving time.
At present, a kind of common solution is to increase real-time timepiece chip in the hardware of detector, perhaps design software real-time clock in the software of microprocessor.This just introduces another problem,, how to give hardware clock or the software timer setting-up time of detector that is.For this problem, method commonly used is to set clock before detector dispatches from the factory at present, and for clock provides independent uninterrupted power source, to guarantee the clock continuous service.
Summary of the invention
One object of the present invention is to propose a kind of method and apparatus for fire case detector, adopt the method or device can need not to provide independent uninterrupted power source for clock, just can set and timing function the realization time, thereby guarantee that detector only provides nonurgent alarm by day.One object of the present invention is to propose a kind of method and apparatus for fire case detector, adopts the method or device to reset as required clock by the user easily, the specific purpose tool that need not easy to use, and can avoid clock jitter.
For above-mentioned purpose, the present invention proposes by increase to detector the operation that is different from self-checking function of Test Switchboard realize set-up function to the detector clock.
According to one aspect of the invention, the present invention proposes a kind of timing method for fire case detector.Wherein, described detector comprises power switch and is used for the Test Switchboard of self check.Described method comprises: detect whether described Test Switchboard is triggered in the first predetermined amount of time after described power switch is opened; Be triggered if detect described Test Switchboard, then start the timer in the described detector, wherein said timer is used for timing so that described detector only provides nonurgent alarm in the section at the appointed time.Nonurgent alarm described here includes but not limited to the not enough alarm of battery electric quantity.And described stipulated time section is generally the time on daytime, and is preferred but be not limited to 12 hours, can decide according to the user location.Here first schedule time for example was a rational shorter time, so that the user is installing detector, or behind the power switch of unlatching detector Test Switchboard was operated.For example less than about 15 seconds, preferably, less than 10 seconds.
This method is by being used in combination to realize clock setting function with power switch and Test Switchboard.Thus, the user can reset clock as required voluntarily, thereby can in time correct clock jitter, avoids because only once set the trouble that clock brings when detector dispatches from the factory.Simultaneously, this method is set by the user the possible of clock because providing, thereby need not to provide independent uninterrupted power source for the clock of detector, also and then has thus saved cost.
According to a further aspect of the present invention, the present invention proposes the another kind of timing method that is used for fire case detector.Wherein said detector comprises the Test Switchboard for self check.Described method comprises: detect described Test Switchboard whether by continuous trigger more than twice or twice; More than twice or twice, then started the timer in the described detector by continuous trigger if detect described Test Switchboard, wherein said timer is used for timing so that described detection only provides nonurgent alarm in the section at the appointed time.Preferably, detecting Test Switchboard when whether above by twice of continuous trigger or twice, can detect each triggered time of described Test Switchboard and whether be longer than the first duration (T
a), and the interval between adjacent twice triggering whether less than first interval time (T
b).More preferably, the method also comprises: triggering waveform and/or the number of times of determining described Test Switchboard; According to determined triggering waveform and/or number of times, set the current time of described timer.
This method by trigger Test Switchboard according to different sequential twice or twice with on realize clock setting function.Thus, same, the user can reset clock as required voluntarily, avoids because only once set the clock jitter that clock brings when detector dispatches from the factory.Simultaneously, this method is set by the user the possible of clock because providing, thereby need not to provide independent uninterrupted power source for the clock of detector, also and then has thus saved cost.In addition, because the user can set the different time by different triggering waveforms or triggering times, thereby the user can select when to set the detector clock more neatly.
Preferably, the method that the present invention proposes also is included in and starts before the described timer, described detector is only set for the time restriction pattern that nonurgent alarm is provided in the section at the appointed time.Like this, whether the user can select so that detector is operated in the time restriction pattern according to own needs.More preferably, the method that the present invention proposes also is included in after described timer starts, and indicates the described time to set successfully.Preferably, the combination with sound, light or sound and light comes the indicative of settings success.
Preferably, the method that the present invention proposes also comprises: when detecting the nonurgent alarm event, judging whether described detector is operated in only provides the time restriction of nonurgent alarm pattern at the appointed time; If described detector is operated in described time restriction pattern, determine that then the current time of described timer is whether in described stipulated time section; If the current time of described timer is in described stipulated time section, then provide described nonurgent alarm.
According to a further aspect of the present invention, the invention allows for a kind of fire case detector, it comprises: power switch; Test Switchboard is for the self-checking function that starts described detector; Alarm Unit is used for providing alarm; Timer is used for timing so that described Alarm Unit only provides nonurgent alarm in the section at the appointed time; Whether the first detecting unit is triggered for detection of described Test Switchboard in the first predetermined amount of time after described power switch is opened; The first start unit is used for starting the timer in the described detector when detecting described Test Switchboard and be triggered.
According to a further aspect of the present invention, the invention allows for a kind of fire case detector, it comprises: Test Switchboard, for the self-checking function that starts described detector; Alarm Unit is used for providing alarm; Timer is used for timing so that described Alarm Unit only provides nonurgent alarm in the section at the appointed time; The second detecting unit, for detection of described Test Switchboard whether by continuous trigger more than twice or twice; The second start unit is used for detecting described Test Switchboard when above by twice of continuous trigger or twice at described the second detecting unit, starts the interior timer of described detector.Preferably, this detector also comprises: determining unit, for triggering waveform and/or the number of times of determining described Test Switchboard; Setup unit is used for according to determined triggering waveform and/or number of times, sets the current time of described timer.
Preferably, above-mentioned two kinds of detectors can also comprise: the pattern setup unit, be used for before described start unit starts described timer, and described detector is set for only provides the time restriction of nonurgent alarm pattern at the appointed time.More preferably, also comprise: the first judging unit, be used for when detecting the nonurgent alarm event, judging whether described detector is operated in only provides the time restriction of nonurgent alarm pattern at the appointed time; The second judging unit is used for when described detector is operated in described time restriction pattern, judges that the current time of described timer is whether in described stipulated time section; Indicating member is used for indicating described Alarm Unit that described nonurgent alarm is provided when current time that described the second judgment unit judges goes out described timer is in described stipulated time section.Wherein, more preferably, wherein, after described timer started, the Alarm Unit of described detector indicated described the setting successfully.
According to the present invention an aspect is arranged, the invention allows for a kind of computer-readable medium for the method for carrying out the present invention's proposition, store instruction on it, described instruction is used for the method that the present invention proposes when being performed.The invention allows for a kind of computer program, it comprises instruction, and described instruction is used for realizing the method for the present invention's proposition when being performed.
The method and the detector that adopt the present invention to propose can provide independent uninterrupted power source for the clock in the detector, saved cost.Moreover, owing to can be set by the user clock, thus can solve the clock jitter problem that causes after the long-term use, can also solve owing to time zone difference or the different inconvenience that bring of working time, simultaneously so that safeguard convenient.In addition, method and detector that the present invention proposes are only realized clock setting by the operation that increases Test Switchboard, thereby easy and simple to handle, user friendly.
Description of drawings
Purpose of the present invention, characteristics, feature and advantage will become more apparent by the detailed description below in conjunction with accompanying drawing.Wherein:
Fig. 1 shows the structured flowchart of traditional fire case detector;
Fig. 2 shows the according to an embodiment of the invention structured flowchart of fire case detector;
Fig. 3 shows the according to an embodiment of the invention process flow diagram of timing method;
Fig. 4 shows the process flow diagram that nonurgent alarm is provided according to an embodiment of the invention;
Fig. 5 shows the in accordance with another embodiment of the present invention process flow diagram of timing method;
Fig. 6 shows the process flow diagram of the timing method of another embodiment according to the present invention.
Fig. 7 shows the triggering waveform of Test Switchboard.
Embodiment
Below with reference to accompanying drawing each embodiment of the present invention is described.By following description, above-mentioned advantage of the present invention will be more readily understood.
Fig. 1 exemplarily shows a kind of structured flowchart of traditional fire case detector.As shown in Figure 1, traditional detector 100 comprises power supply 110, sensor 120, microcontroller 130, Alarm Unit 140, and Test Switchboard 150 (such as testing button).
In Fig. 1, power supply 110 generally includes a battery, and also can comprise a power switch P.Power switch P for example can be design at one of detector surface shift knob independently.Power switch P also can be and the device of design in the clamping mechanical mechanism interlock of detector bottom.When detector 100 was installed on the firm banking, this clamping mechanical mechanism on firm banking, was opened the power supply of detector 100 with detector card simultaneously.
As previously mentioned, for fear of affecting user's night's rest, the family expenses detector need to be made restriction to the alarm time of the nonurgent alarm of for example battery undervoltage, and nonurgent alarm for example is provided daytime, and nonurgent alarm is not provided night, namely be operated in the time restriction pattern.Fig. 2 shows according to an embodiment of the invention detector 200, and it can realize this time restriction pattern easily.Compare with detector 100 shown in Figure 1, detector 200 has increased timer 2 60.Here, timer 2 60 can be a hardware clock of being powered by power supply 110, as shown in Figure 2.Alternatively, timer 2 60 also can be the software timer that is provided by the timed sequence that operates on the microcontroller 230.In addition, microcontroller 130 in Fig. 1, microcontroller 230 has also increased for detection of Test Switchboard 150 open-interval detecting units, the start unit that is used for setting timer and starts timer, and preferably also comprise the indicating member that sound and/or photoresponse are provided for indication Alarm Unit 140 after the clock setting success.The operating process of microcontroller 230 specifically illustrates in Fig. 3 and Fig. 4.
Fig. 3 shows according to an embodiment of the invention detector timing method.In this embodiment, simple in structure in view of detector itself, the present inventor has proposed to utilize that the key groups of Test Switchboard and power switch is incompatible is the detector setting-up time.Particularly, for example, if user's expectation resets the detector time, then can be about the schedule time (for example evenings 21 point), very short time after opening detector power switch P (for example in about 15 seconds, preferred 10 seconds) internal trigger (pressing) Test Switchboard 150, can reset and start timer 2 60 thus, so that detector after for example do not provide for example nonurgent alarm of battery undervoltage in about 12 hours, its concrete methods of realizing is as shown in Figure 3.
Example shown in Figure 3 is an application example the simplest, and acquiescence mode of operation of its supposition detector is the time restriction pattern, and the user only need reset as required the time and get final product.In Fig. 3, the operating process of microcontroller 230 is from step S310.In step S310, power switch P opens, thus the conducting supply access so that in the detector modules because of must electric bringing into operation.Microcontroller 230 electric after at first executive system initialize routine, i.e. step S320.The system initialization time is very short, common several seconds.After finishing initialization, at step S330, whether the detecting unit in the microcontroller 230 detects Test Switchboard and is triggered (or claiming whether testing button is pressed).If Test Switchboard triggers, then show the user for utmost point short time (the preferably approximately 10 second in) internal trigger of time when detector powers on or after powering on of setting detector Test Switchboard 150, flow process enters step S360.At step S360, the simplest a kind of mode is to start timer 2 60 by the start unit in the microcontroller 230, so that timer 2 60 reclockings.Here, for example timer 2 60 is 24 hours timer.Thus, at special time, restart timer and be equivalent to reset the time.At timer restart or after setting, in step S320, for example hummer and/or light emitting diode in the indicating member indication Alarm Unit in the microcontroller 260 respond in the mode of sound and/or light, to confirm regularly success.After time set successfully, microcontroller 230 began to carry out the master routine circulation of detector.
Fig. 3 shows according to an embodiment of the invention detector time assignment procedure.Fig. 4 and then show the operating process that nonurgent alarm is provided under the time restriction pattern.As shown in Figure 4, in step S410, the voltage detection unit of microcontroller 260 also periodically detects cell voltage, and judges in step S420 whether battery is under-voltage.If the determination result is NO, then returning the circulation of continuation master routine.If the judged result of step S420 is battery undervoltage, then thinking to provide nonurgent alarm, and flow process enters step S430.At step S430, microcontroller 230 is further judged the current time restriction pattern that whether is operated in of detector.If the determination result is NO for step S430, then flow process directly enters step S460, that is, Alarm Unit 140 is instructed to provide nonurgent alarm.If the judged result of step S430 is yes, then show the detector work at present in the time restriction pattern, flow process enters step S440.Microcontroller 230 reads the current time t of timer at step S440, and judges at step S450 whether current time t drops on the stipulated time of nonurgent alarm section T can be provided
DayWithin.If the determination result is NO then nonurgent alarm is not provided for step S450, carry out the master routine circulation and directly return.Otherwise flow process proceeds to step S460, and the indication Alarm Unit provides nonurgent alarm.Step S420 among Fig. 4, S430 and S450 can be carried out by three judging units in the microcontroller 230 respectively.
Fig. 3 and flow process shown in Figure 4 provide a kind of simple detector timing method.That is to say, as long as the user special time (for example evenings 21 point) simultaneously (or within very short time successively) trigger power switch and Test Switchboard, then can restart timer, so that detector does not for example provide nonurgent alarm in 12 hours after this special time, and in all the other stipulated time sections of 12 hours, i.e. T
DayIn nonurgent alarm is provided.
Fig. 5 shows an improvement project on process base shown in Figure 3.Than Fig. 3, flow process shown in Figure 5 has increased the setting step of time restriction pattern.In other words, in the embodiment shown in fig. 5, detector is not that acquiescence is operated in the time restriction pattern, but is set by the user, and sets this time restriction pattern when the user sets the detector time.In Fig. 5, step S320-S330 is identical with Fig. 3 with S360-S370, repeats no more here.Different is, when the judged result of step S330 for certainly the time, flow process enters step S540, and clock namely is set.Then, in step S550, detector is configured to be operated in the time restriction pattern, and this step for example can be realized by a pattern setup unit.Then, at step S360 with S370 starts timer respectively and indicating user arranges successfully.If step S330 is when the determination result is NO, flow process enters step S580,, detector is configured to be operated in non-time restriction pattern that is, and then at step S590 forbidding timer.In addition, alternatively, if timer construction is simple, step S540 and step S360 also may be incorporated in together and carry out.
Fig. 6 shows in accordance with another embodiment of the present invention detector timing method.In example shown in Figure 6, the user can by special time only the operational testing switch come the realization time to set, for example twice of continuous trigger Test Switchboard or twice with on set the clock of detector.Particularly, in microcontroller 230 operation master routine processes (step S610), microcontroller 230 detects Test Switchboards whether by continuous trigger more than twice or twice, i.e. step S620.And then, carry out the processing identical with step shown in Figure 5 according to the judged result of step S620, perhaps alternatively also can be according to determining step flow performing afterwards as shown in Figure 3.
Here, whether the detection Test Switchboard is a lot of by the mode of continuous trigger.Such as, take the situation of pressing testing button for twice as example, when detecting, whether the duration that at first definite each testing button is pressed surpasses a predetermined lasting time Ta (for example 1s), will determine also that simultaneously whether twice interval between the adjacent triggering be less than a predetermined time interval Tb (1s).If satisfy this two conditions, can determine that then testing button is pressed twice continuously.Certainly, this only is a simple example.As required, the triggering Waveform Design of Test Switchboard can also be become shown in arbitrary among Fig. 7, namely limit as required maximal value and the minimum value of the duration that testing button is pressed, and the maximal value of interval time and minimum value, thereby the user can trigger Test Switchboard (testing button) with different waveforms, to realize the setting to different time points.
In addition, in example shown in Figure 6, the difference of the waveform that is triggered according to Test Switchboard, or the number of times difference that is triggered of Test Switchboard, the user can set the concrete time.Such as, if the user doublely presses testing button then shows that the current time is 12 points at 12, and start timer.After microcontroller 230 detects this triggering waveform, current time of clock is set as 12 points.If the user in the afternoon 18 press continuously testing button 4 times, then can be set as 18 points the current time of clock, and start timer.
More preferably, above-mentioned mode shown in Figure 6 can also be combined with Fig. 3 or method shown in Figure 5.That is to say, when power switch triggers, come setting-up time by once pressing testing button, after detector normal operation by press continuously testing button twice or twice to set the concrete time.
The method and the detector that adopt the present invention to propose can provide independent uninterrupted power source for the clock in the detector, saved cost.Moreover, owing to can be set by the user clock, thus can solve the clock jitter problem that causes after the long-term use, can also solve owing to time zone difference or the different inconvenience that bring of working time, simultaneously so that safeguard convenient.In addition, method and detector that the present invention proposes are only realized clock setting by the operation that increases Test Switchboard, thereby easy and simple to handle, user friendly.
The flow process that the above microcontroller is carried out can adopt hardware mode to realize, also can adopt software mode to realize.When adopting hardware to realize, microcontroller can be realized by the DSP that can realize above-mentioned functions, FPGA or other similar chips with processing capacity.Above-mentioned functions can also be embodied as program code, and these program codes comprise the instruction that can realize above-mentioned functions.Program code can be recorded in the machine-readable storage medium, and for example in the readable memory, and these program codes can be carried out to realize above-mentioned functions by for example CPU, MCU.Be used for providing the storage medium embodiment of program code to comprise floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, Nonvolatile memory card and ROM.Selectively, can be by communication network download program code from the server computer.
In addition, each step of each functional unit of above-described microcontroller and flow process all is exemplary.According to actual needs, each functional unit can merge or split into different modules, also can be integrated into a module, and each step also can merge execution.This point is apparent to those skilled in the art.
It will be appreciated by those skilled in the art that top disclosed each embodiment can make various changes and modification in the situation that do not depart from invention essence, these changes and modification all should drop within protection scope of the present invention.Therefore, protection scope of the present invention should be limited by appending claims.
Claims (22)
1. timing method that is used for fire case detector (200), wherein said detector comprise power switch (P) and be used for the Test Switchboard (150) of self check, and described method comprises:
Whether described Test Switchboard is triggered in first predetermined amount of time of detection after described power switch (P) is opened;
Be triggered if detect described Test Switchboard, then start the timer in the described detector, wherein said timer is used for timing so that described detector only provides nonurgent alarm in the section at the appointed time.
2. timing method that is used for fire case detector (200), wherein said detector comprises the Test Switchboard (150) for self check, described method comprises:
Detect described Test Switchboard whether by continuous trigger more than twice or twice;
More than twice or twice, then started the timer in the described detector by continuous trigger if detect in the described Test Switchboard, wherein said timer is used for timing so that described detection only provides nonurgent alarm in the section at the appointed time.
3. method as claimed in claim 1 or 2 also comprises, if detect the triggering of described Test Switchboard at described detecting step, described detector is only set for the time restriction pattern that nonurgent alarm is provided in the section at the appointed time.
4. method as claimed in claim 1 or 2 also comprises:
When detecting the nonurgent alarm event, judging whether described detector is operated in only provides the time restriction of nonurgent alarm pattern at the appointed time;
If described detector is operated in described time restriction pattern, determine that then the current time of described timer is whether in described stipulated time section;
If the current time of described timer is in described stipulated time section, then provide described nonurgent alarm.
5. method as claimed in claim 1 or 2 also comprises: after described timer starts, indicate described fixed cycle operator success.
6. method as claimed in claim 5, wherein, described indication step comprises: with sound, light, or the mode of sound and light combination is carried out described indication.
7. method as claimed in claim 1 or 2, wherein, described nonurgent alarm comprises the not enough alarm of battery electric quantity.
8. method as claimed in claim 1 or 2, wherein, described stipulated time section is the time on daytime.
9. method as claimed in claim 2, wherein, each triggered time of described Test Switchboard is longer than the first duration (T
a), and the interval between adjacent twice triggering less than first interval time (T
b).
10. method as claimed in claim 2 wherein, starts the step of described timer, also comprises:
Determine triggering waveform and/or the number of times of described Test Switchboard;
According to determined triggering waveform and/or number of times, be set the current time of described timer.
11. the method for claim 1 also comprises:
Detect described Test Switchboard whether by continuous trigger more than twice or twice;
More than twice or twice, then determined triggering waveform and/or the number of times of described Test Switchboard by continuous trigger if detect described Test Switchboard;
According to determined triggering waveform and/or test, set the current time of described timer, and restart described timer.
12. a fire case detector (200) comprising:
Power switch (P);
Test Switchboard (150) is for the self-checking function that starts described detector;
Alarm Unit (140) is used for providing alarm;
Timer (260) is used for timing so that described Alarm Unit only provides nonurgent alarm in the section at the appointed time;
Whether the first detecting unit is triggered for detection of described Test Switchboard in the first predetermined amount of time after described power switch (P) is opened;
The first start unit is used for starting the timer in the described detector when detecting described Test Switchboard and be triggered.
13. a fire case detector (200) comprising:
Test Switchboard (150) is for the self-checking function that starts described detector;
Alarm Unit (140) is used for providing alarm;
Timer (260) is used for timing so that described Alarm Unit only provides nonurgent alarm in the section at the appointed time;
The second detecting unit, for detection of described Test Switchboard whether by continuous trigger more than twice or twice;
The second start unit is used for detecting described Test Switchboard when above by twice of continuous trigger or twice at described the second detecting unit, starts the interior timer of described detector.
14. such as claim 12 or 13 described detectors, also comprise:
The pattern setup unit is used for after the triggering of described Test Switchboard is detected, and described detector is set for only provides the time restriction of nonurgent alarm pattern at the appointed time.
15. such as claim 12 or 13 described detectors, also comprise:
The first judging unit is used for when detecting the nonurgent alarm event, and judging whether described detector is operated in only provides the time restriction of nonurgent alarm pattern at the appointed time;
The second judging unit is used for when described detector is operated in described time restriction pattern, judges that the current time of described timer is whether in described stipulated time section;
Indicating member is used for indicating described Alarm Unit that described nonurgent alarm is provided when current time that described the second judgment unit judges goes out described timer is in described stipulated time section.
16. such as claim 12 or 13 described detectors, wherein, after described timer started, the Alarm Unit of described detector indicated regularly success.
17. such as claim 12 or 13 described detectors, wherein, described nonurgent alarm is the not enough alarm of battery electric quantity.
18. detector as claimed in claim 13, wherein, each triggered time of described Test Switchboard is longer than the first duration (T
a), and the interval between adjacent twice triggering less than first interval time (T
b).
19. detector as claimed in claim 13, wherein, described start unit also comprises:
Determining unit is for triggering waveform and/or the number of times of determining described Test Switchboard;
Setup unit is used for according to determined triggering waveform and/or number of times, sets the current time of described timer.
20. detector as claimed in claim 12 also comprises:
Whether the second detecting unit is used for detecting described Test Switchboard at the detector operational process and is triggered more than twice or twice;
Determining unit is used for detecting described Test Switchboard when above by twice of continuous trigger or twice, then triggering waveform and/or the number of times of definite described Test Switchboard;
Setup unit according to determined triggering waveform and/or number of times, is set the current time of described timer;
Described start unit restarts described timer in response to the setting of described setup unit.
21. a computer-readable medium stores instruction on it, described instruction is used for realizing such as the arbitrary described method of claim 1-11 when being performed.
22. a computer program, it comprises instruction, and described instruction is used for realizing such as the arbitrary described method of claim 1-11 when being performed.
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| CN201210097007.0A CN103366486B (en) | 2012-04-01 | 2012-04-01 | Fire case detector and timing method thereof |
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| CN103366486B (en) | 2016-01-13 |
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