CN103150855A - Independent fire detection alarm and long-distance measuring and controlling method - Google Patents
Independent fire detection alarm and long-distance measuring and controlling method Download PDFInfo
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- CN103150855A CN103150855A CN2013100416116A CN201310041611A CN103150855A CN 103150855 A CN103150855 A CN 103150855A CN 2013100416116 A CN2013100416116 A CN 2013100416116A CN 201310041611 A CN201310041611 A CN 201310041611A CN 103150855 A CN103150855 A CN 103150855A
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Abstract
The invention belongs to the field of fire safety, and provides an independent fire detection alarm and a long-distance measuring and controlling method. A light-emitting diode (LED) indicator light and an alarming module respectively carry out light indication and sound indication, a remote controller is used for carrying out remote manual testing and controlling on the independent fire detection alarm. Problems that working conditions of the independent fire detection alarm are difficult to know in a simple mode, manual testing in a fixed period is difficult, the independent fire detection alarm is difficult to restore after the fire is suppressed, rest or work is influenced by the battery low-voltage alarm and conditions of battery voltage are not active to acquire are solved.
Description
Technical field
The invention belongs to the security against fire field, relate in particular to a kind of free-standing fire detection alarm and Methods of Remote Monitoring.
Background technology
Fire is as a kind of liability disaster, and serious harm is to the mankind's material property and life security.Free-standing fire detection alarm is installed in buildings is helped people in time to find fire, put out a fire or escape, thereby reduce damage by fire to a certain extent.
For guaranteeing that free-standing fire detection alarm can normally effectively work, existing national standard and international standard all require the user to carry out routine test to free-standing fire detection alarm.Existing product is generally on free-standing fire detection alarm, testing button to be set, but because free-standing fire detection alarm is installed on top of building or sidewall, with ground, higher height is arranged, needing the user to use the instruments such as ladder to ascend a height during the manual testing operates, not only inconvenient but also have a potential safety hazard, so that exist the user not carry out for a long time the manual testing, the product ignorant phenomenon that lost efficacy is difficult to guarantee the performance of product function.Also have product design to have lifting rope to replace testing button, can carry out the manual testing to facilitate the user to need not to ascend a height, but the lifting rope that hangs impact is attractive in appearance, when especially product is arranged on the medium position of buildings.Equally, breaking out of fire and get rid of fire after free-standing fire detection alarm carried out reset operation also have a same difficult problem.
Simultaneously, can normally effectively work for guaranteeing free-standing fire detection alarm, existing national standard and international standard all require at cell voltage during lower than setting value, the stand alone type fire detection alarm need to carry out low-voltage reports to the police, by long intermittence auditory tone cues to impel people in time to change battery.But, if reporting to the police, free-standing fire detection alarm low-voltage appears at time at night or the time of meeting of user's sleep, intermittence, chimes of doom can have a strong impact on user's ortho or normally carrying out of meeting for a long time, may cause the user to take out battery and make free-standing fire detection alarm be in the not phenomenon of working condition, if forget the refitting battery afterwards, free-standing fire detection alarm cisco unity malfunction is in case breaking out of fire will bring larger infringement.Existing commercially available free-standing fire detection alarm product carries out fault alarm afterwards when cell voltage is low, all initiatively do not obtain in advance the function of battery behaviour in service.
Summary of the invention
The invention provides a kind of free-standing fire detection alarm, be intended to solve and now sell free-standing fire detection alarm product artificial routine test difficulty, the free-standing fire detection alarm difficulty that resets after fire suppression, battery low-voltage are reported to the police affects the problem that rest or work, cell voltage situation can not active obtainings.
In order to address the above problem, the present invention is achieved in that a kind of free-standing fire detection alarm, comprise battery, the processor module that operating voltage is provided and be connected sensing and signal condition module and test and the reset key module that is connected with described processor module, described free-standing fire detection alarm also comprises:
Respectively with described battery be connected processor module and be connected, described cell voltage is carried out automatically the voltage sample module of sample detecting;
Be connected with described processor module, the duty of described sensing and signal condition module and the voltage status of described battery are carried out the LED light that light is indicated;
Be connected with described processor module, the duty of described sensing and signal condition module and the voltage status of described battery are carried out the alarm module that sound is indicated;
Be connected with described processor module, receive the signal receiving module of the control signal that matches;
And
Emission and the control signal that described signal receiving module is complementary carry out to described free-standing fire detection alarm the telepilot that remote control is controlled.
further, described processor module is the single-chip microcomputer U1 with analog-digital conversion function, the VCC port of described single-chip microcomputer U1 connects described battery, the first analog to digital conversion end A/D1 of described single-chip microcomputer U1 connects described voltage sample module, the first output terminal OUT1 of described single-chip microcomputer U1 connects described LED light, the second output terminal OUT2 of described single-chip microcomputer U1 connects described alarm module, the I/O end I/O of described single-chip microcomputer U1 connects described test and reset key module, the second analog to digital conversion end A/D2 of described single-chip microcomputer U1 connects described sensing and signal condition module, the input end IN1 of described single-chip microcomputer U1 connects described signal receiving module.
Further, described LED light comprises and continues flicker, flicker 10 times, flicker 8 times, flicker 5 times, and glimmer 4 times, flicker 3 times, flicker 2 times, 18 kinds of initial pointing-type glimmers.
Further, described alarm module comprises continue to blow a whistle, blow a whistle 10 times, flicker 8 times, blow a whistle 5 times, blow a whistle 4 times, blow a whistle 3 times, blow a whistle 2 times, the 8 kinds of initial alarm modes of blowing a whistle 1 time.
Further, described sensing and signal condition module are a kind of or its combination in photoelectric smoke detection module, temperature sense detecting module and CO detecting module.
Further, described signal receiving module is a kind of or its combination in infrared receiving module, 2.4G wireless module, wireless WiFi module, bluetooth module.
Further, described telepilot comprises main control module and is connected key-press module, the power module that is connected with described main control module and the signal emission module that is complementary with signal receiving module.
Further, described key-press module comprises: the quiet control button of the quiet control signal of emission; The control button that resets of emission reseting controling signal; The self-checking button of emission self-checking control signal; And the cell voltage of emission cell voltage test signal test button.
The present invention also provides a kind of Methods of Remote Monitoring based on above-mentioned free-standing fire detection alarm, said method comprising the steps of:
(1), free-standing fire detection alarm is carried out initialization and sets the battery low-voltage alarm threshold value;
(2), free-standing fire detection alarm is tested automatically and judged whether that fire occurs, and is, execution in step (3); No, execution in step (6);
(3), LED light enters the pointing-type that continues flicker, alarm module enters the alarm mode that continues to blow a whistle;
(4), processor module detects whether reseting controling signal is arranged, be, execution in step (5); No, execution in step (3);
(5), LED light extinguishes, alarm module is quiet, and execution in step (2);
(6), processor module detects and judge sensing and signal condition module operation irregularity whether, be, execution in step (7); No, execution in step (8);
(7), LED light flicker 10 times, alarm module is blown a whistle 10 times, and execution in step (2);
(8), voltage sample module samples and judge that by processor module cell voltage whether lower than the battery low-voltage alarm threshold value of setting, is, execution in step (9); No, execution in step (12);
(9), processor module detects whether quiet control signal is arranged, be, execution in step (10); No, execution in step (11);
(10), processor module judges whether to arrive the quiet time that quiet control signal is set, be, execution in step (11); No, execution in step (5);
(11), LED light flicker 8 times, alarm module is blown a whistle 8 times, and execution in step (2);
(12), processor module is tested and judged whether the self-checking control signal, be, execution in step (6); No, execution in step (13);
(13), processor module is tested and judged whether the cell voltage test signal, be, execution in step (14); No, execution in step (2);
(14), the voltage sample module is carried out sample detecting to cell voltage;
(15), processor module calculates the difference A of the battery low-voltage alarm threshold value of battery nominal voltage value and setting, and establish sample detecting to battery voltage value and the difference of the battery low-voltage alarm threshold value of setting be B, calculate and judge magnitude relationship between difference A and difference B;
As B 〉=80%A, execution in step (16);
Work as 80%A〉B 〉=60%A, execution in step (17);
Work as 60%A〉B 〉=40%A, execution in step (18);
Work as 40%A〉B 〉=20%A, execution in step (19);
Work as 20%A〉B 〉=0%A, execution in step (20);
(16), LED light flicker 5 times, alarm module is blown a whistle 5 times, and execution in step (2);
(17), LED light flicker 4 times, alarm module is blown a whistle 4 times, and execution in step (2);
(18), LED light flicker 3 times, alarm module is blown a whistle 3 times, and execution in step (2);
(19), LED light flicker 2 times, alarm module is blown a whistle 2 times, and execution in step (2);
(20), LED light flicker 1 time, alarm module is blown a whistle 1 time, and execution in step (2).
In the present invention, carry out respectively the indication of light indication harmony by LED light and alarm module, realize free-standing fire detection alarm is carried out the remote handle test by telepilot, solved the working condition of knowing free-standing fire detection alarm that can not be simple and clear in the prior art, artificial routine test difficulty, after fire suppression, reset difficulty, battery low-voltage of free-standing fire detection alarm reported to the police and affected the problem that rest or work, cell voltage situation can not active obtainings.
Description of drawings
Fig. 1 is the frame construction drawing of the free-standing fire detection alarm that provides of the embodiment of the present invention;
Fig. 2 is the modular structure figure of the free-standing fire detection alarm that provides of the embodiment of the present invention;
Fig. 3 is the modular structure figure of the telepilot that provides of the embodiment of the present invention;
Fig. 4 is the modular structure figure of the Infrared remote controller that provides of the embodiment of the present invention;
Fig. 5 is the Methods of Remote Monitoring process flow diagram of the free-standing fire detection alarm that provides of the embodiment of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with specific embodiment, specific implementation of the present invention is described in detail:
As shown in Figure 1, a kind of free-standing fire detection alarm, comprise battery 10, the processor module 11 that operating voltage is provided and be connected sensing and signal condition module 12 and test and the reset key module 13 that is connected with processor module 11, free-standing fire detection alarm 1 also comprises:
Are connected with processor module with battery 10 respectively and are connected, battery 10 voltages are carried out automatically the voltage sample module 14 of sample detecting;
Be connected with processor module 11, the duty of sensing and signal condition module 12 and the voltage status of battery 10 are carried out the LED light 15 that light is indicated;
Be connected with processor module 11, the duty of sensing and signal condition module 12 and the voltage status of battery 10 are carried out the alarm module 16 that sound is indicated;
Be connected with processor module 11, receive the signal receiving module 17 of the control signal that matches; And
Emission and the control signal that signal receiving module 17 is complementary carry out to free-standing fire detection alarm 1 telepilot 18 that remote control is controlled.
In embodiments of the present invention, stand alone type fire detection alarm 1 can carry out far-end observing and controlling by telepilot 18, can be in the situation that do not need to utilize the operation of ascending a height of the instruments such as ladder, realization to free-standing fire detection alarm 1 carry out resetting after regular manual testing, fire, the operations such as cell voltage test, quiet control, test be used for reset key module 13 in the situation that without telepilot 18 to free-standing fire detection alarm 1 carry out the manual testing, the operation such as reset.
as shown in Figure 2, as one embodiment of the invention, processor module 11 is the single-chip microcomputer U1 with analog-digital conversion function, the VCC port of single-chip microcomputer U1 connects battery 10, the first analog to digital conversion end A/D1 of single-chip microcomputer U1 connects voltage sample module 14, the first output terminal OUT1 of single-chip microcomputer U1 connects LED light 15, the second output terminal OUT2 module 16 taking alarm of single-chip microcomputer U1, the I/O end I/O of single-chip microcomputer U1 connects test and reset key module 13, the second analog to digital conversion end A/D2 of single-chip microcomputer U1 connects sensing and signal condition module 12, the input end IN1 of single-chip microcomputer U1 connects signal receiving module 17.
As one embodiment of the invention, LED light 15 comprises and continues flicker, flicker 10 times, flicker 8 times, flicker 5 times, and glimmer 4 times, flicker 3 times, flicker 2 times, 18 kinds of initial pointing-type glimmers.
As one embodiment of the invention, alarm module 16 comprises continue to blow a whistle, blow a whistle 10 times, blow a whistle 8 times, blow a whistle 5 times, blow a whistle 4 times, blow a whistle 3 times, blow a whistle 2 times, the 8 kinds of initial alarm modes of blowing a whistle 1 time.
As one embodiment of the invention; the alarm mode of the pointing-type of LED light 15 and alarm module 16 can be adjusted setting as required actual; the pointing-type that the embodiment of the present invention provides and alarm mode are just as preferred embodiment; has the effect that is different from different mode; concrete pointing-type and alarm mode can change, and any pointing-type that derives according to the present invention and alarm mode all belong to the scope of protection of the invention.
As one embodiment of the invention, sensing and signal condition module 12 are a kind of or its combination in photoelectric smoke detection module, temperature sense detecting module and CO detecting module.
In embodiments of the present invention, sensing and signal condition module 12 belong to the key component of free-standing fire detection alarm 1, played very important effect in free-standing fire detection alarm 1 detection of fires process, stand alone type fire detection alarm 1 can automatically carry out detection and the voltage of battery 10 and sensing and signal condition module 12 are tested, complete with assurance function, can the real-time implementation detection.
As one embodiment of the invention, signal receiving module 17 is a kind of or its combination in infrared receiving module, 2.4G wireless module, wireless WiFi module, bluetooth module.
In embodiments of the present invention, signal receiving module 17 can be distinguished selection in the power of different occasions and signal.
As shown in Figure 3, as one embodiment of the invention, telepilot 18 comprises main control module 181 and is connected key-press module 182, power module 183 and the signal emission module 184 that is connected with main control module 181.
In embodiments of the present invention, power module 183 is for providing the battery of operating voltage for telepilot.
Further, as one embodiment of the invention, key-press module 182 comprises as Fig. 4: the quiet control button of the quiet control signal of emission; The control button that resets of emission reseting controling signal; The self-checking button of emission self-checking control signal; And the cell voltage of emission cell voltage test signal test button.
In embodiments of the present invention, quiet control button has quiet time and the quiet function of a key is set.
The modular structure figure of the Infrared remote controller that Fig. 4 provides for the preferred embodiment of the present invention.
As shown in Figure 5, the present invention also provides a kind of Methods of Remote Monitoring based on above-mentioned free-standing fire detection alarm, comprises the following steps:
Step S1 carries out initialization and sets the battery low-voltage alarm threshold value free-standing fire detection alarm;
Step S2, free-standing fire detection alarm automatically test and have judged whether that fire occurs, and is, execution in step S3; No, execution in step S6;
Step S3, LED light enters the pointing-type that continues flicker, and alarm module enters the alarm mode that continues to blow a whistle;
Step S4, processor module detects whether reseting controling signal is arranged, and is, execution in step S5; No, execution in step S3;
Step S5, LED light is extinguished, and alarm module is quiet, and execution in step S2;
Step S6, processor module detect and judge whether operation irregularity of sensing and signal condition module, are, execution in step S7; No, execution in step S8;
Step S7, LED light flicker 10 times, alarm module is blown a whistle 10 times, and execution in step S2;
Step S8, the voltage sample module samples also judges that by processor module cell voltage whether lower than the battery low-voltage alarm threshold value of setting, is, execution in step S9; No, execution in step S12;
Step S9, processor module detects whether quiet control signal is arranged, and is, execution in step S10; No, execution in step S11;
Step S10, processor module judge whether to arrive the quiet time that quiet control signal is set, and are, execution in step S11; No, execution in step S5;
Step S11, LED light flicker 8 times, alarm module is blown a whistle 8 times, and execution in step S2;
Step S12, processor module test and have judged whether the self-checking control signal, are, execution in step S6; No, execution in step S13;
Step S13, processor module test and have judged whether the cell voltage test signal, are, execution in step S14; No, execution in step S2;
Step S14, the voltage sample module is carried out sample detecting to cell voltage;
Step S15, processor module calculates the difference A of the battery low-voltage alarm threshold value of battery nominal voltage value and setting, and establish sample detecting to battery voltage value and the difference of the battery low-voltage alarm threshold value of setting be B, calculate and judge magnitude relationship between difference A and difference B;
As B 〉=80%A, execution in step S16;
Work as 80%A〉B 〉=60%A, execution in step S17;
Work as 60%A〉B 〉=40%A, execution in step S18;
Work as 40%A〉B 〉=20%A, execution in step S19;
Work as 20%A〉B 〉=0%A, execution in step S20;
Step S16, LED light flicker 5 times, alarm module is blown a whistle 5 times, and execution in step S2;
Step S17, LED light flicker 4 times, alarm module is blown a whistle 4 times, and execution in step S2;
Step S18, LED light flicker 3 times, alarm module is blown a whistle 3 times, and execution in step S2;
Step S19, LED light flicker 2 times, alarm module is blown a whistle 2 times, and execution in step S2;
Step S20, LED light flicker 1 time, alarm module is blown a whistle 1 time, and execution in step S2.
The below is described further technical scheme and the method for the embodiment of the present invention.
In embodiments of the present invention, by the different mode combined report test result of alarm module 16 and LED light 15, the user can carry out respective handling according to sound, light prompting.In the inventive method embodiment, employing be that sensing and signal condition module and battery are tested separately, also can adopt " self check " button to carry out the test of whole parts according to certain testing sequence.
In the Methods of Remote Monitoring step, step S2 is the process of free-standing fire detection alarm 1 automatic detection to step S11, and the centre has the remote control of telepilot 18 to control, step S12 to step S20 be initiatively test processs of telepilot 18 users.in embodiments of the present invention, the 1 automatic detection test of stand alone type fire detection alarm is initiatively tested by telepilot 18 with the user and is combined, can make to a greater extent free-standing fire detector 1 performance detection alarm effect, do not report to the police in the time of can not causing fire to occur because of the detector faults itself, the functions such as manual testing and quiet control have been increased simultaneously, can control at night alarm module during the low-voltage automatic alarm quiet and set the quiet time, people can quietly be had a rest, pointing-type and alarm mode before recovering after the quiet time that arranges daytime arrives, until trouble shooting.Increased the cell voltage test function in the embodiment of the present invention, can initiatively obtain in advance the electric weight situation of battery and carry out the corresponding position and put before battery low-voltage be reported to the police.For example: know battery electric quantity be in " low " state (that is: 20%A〉change in advance battery during B 〉=0%A), in order to avoid impact is had a rest or work.
In embodiments of the present invention, carry out respectively the indication of light indication harmony by LED light and alarm module, realize free-standing fire detection alarm is carried out the remote handle test by telepilot, solved the working condition of knowing free-standing fire detection alarm that can not be simple and clear in the prior art, artificial routine test difficulty, after fire suppression, reset difficulty, battery low-voltage of free-standing fire detection alarm reported to the police and affected the problem that rest or work, cell voltage situation can not active obtainings.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. free-standing fire detection alarm, comprise battery, the processor module that operating voltage is provided and be connected sensing and signal condition module and test and the reset key module that is connected with described processor module, it is characterized in that, described free-standing fire detection alarm also comprises:
Respectively with described battery be connected processor module and be connected, described cell voltage is carried out automatically the voltage sample module of sample detecting;
Be connected with described processor module, the duty of described sensing and signal condition module and the voltage status of described battery are carried out the LED light that light is indicated;
Be connected with described processor module, the duty of described sensing and signal condition module and the voltage status of described battery are carried out the alarm module that sound is indicated;
Be connected with described processor module, receive the signal receiving module of the control signal that matches;
And
Emission and the control signal that described signal receiving module is complementary carry out to described free-standing fire detection alarm the telepilot that remote control is controlled.
2. free-standing fire detection alarm as claimed in claim 1, it is characterized in that, described processor module is the single-chip microcomputer U1 with analog-digital conversion function, the VCC port of described single-chip microcomputer U1 connects described battery, the first analog to digital conversion end A/D1 of described single-chip microcomputer U1 connects described voltage sample module, the first output terminal OUT1 of described single-chip microcomputer U1 connects described LED light, the second output terminal OUT2 of described single-chip microcomputer U1 connects described alarm module, the I/O end I/O of described single-chip microcomputer U1 connects described test and reset key module, the second analog to digital conversion end A/D2 of described single-chip microcomputer U1 connects described sensing and signal condition module, the input end IN1 of described single-chip microcomputer U1 connects described signal receiving module.
3. free-standing fire detection alarm as claimed in claim 1, is characterized in that, described LED light comprises and continue flicker, flicker 10 times, flicker 8 times, flicker 5 times, and glimmer 4 times, flicker 3 times, flicker 2 times, 18 kinds of initial pointing-type glimmers.
4. free-standing fire detection alarm as claimed in claim 1, is characterized in that, described alarm module comprises continue to blow a whistle, blow a whistle 10 times, blow a whistle 8 times, blow a whistle 5 times, blow a whistle 4 times, blow a whistle 3 times, blow a whistle 2 times, the 8 kinds of initial alarm modes of blowing a whistle 1 time.
5. free-standing fire detection alarm as claimed in claim 1, is characterized in that, described sensing and signal condition module are a kind of or its combination in photoelectric smoke detection module, temperature sense detecting module and CO detecting module.
6. free-standing fire detection alarm as claimed in claim 1, is characterized in that, described signal receiving module is a kind of or its combination in infrared receiving module, 2.4G wireless module, wireless WiFi module, bluetooth module.
7. free-standing fire detection alarm as claimed in claim 1, is characterized in that, described telepilot comprises main control module and is connected key-press module, the power module that is connected with described main control module and the signal emission module that is complementary with signal receiving module.
8. free-standing fire detection alarm as claimed in claim 7, is characterized in that, described key-press module comprises: the quiet control button of the quiet control signal of emission; The control button that resets of emission reseting controling signal; The self-checking button of emission self-checking control signal; And the cell voltage of emission cell voltage test signal test button.
9. the Methods of Remote Monitoring based on the described free-standing fire detection alarm of claim 1 to 8, is characterized in that, said method comprising the steps of:
(1), free-standing fire detection alarm is carried out initialization and sets the battery low-voltage alarm threshold value;
(2), free-standing fire detection alarm is tested automatically and judged whether that fire occurs, and is, execution in step (3); No, execution in step (6);
(3), LED light enters the pointing-type that continues flicker, alarm module enters the alarm mode that continues to blow a whistle;
(4), processor module detects whether reseting controling signal is arranged, be, execution in step (5); No, execution in step (3);
(5), LED light extinguishes, alarm module is quiet, and execution in step (2);
(6), processor module detects and judge sensing and signal condition module operation irregularity whether, be, execution in step (7); No, execution in step (8);
(7), LED light flicker 10 times, alarm module is blown a whistle 10 times, and execution in step (2);
(8), voltage sample module samples and judge that by processor module cell voltage whether lower than the battery low-voltage alarm threshold value of setting, is, execution in step (9); No, execution in step (12);
(9), processor module detects whether quiet control signal is arranged, be, execution in step (10); No, execution in step (11);
(10), processor module judges whether to arrive the quiet time that quiet control signal is set, be, execution in step (11); No, execution in step (5);
(11), LED light flicker 8 times, alarm module is blown a whistle 8 times, and execution in step (2);
(12), processor module is tested and judged whether the self-checking control signal, be, execution in step (6); No, execution in step (13);
(13), processor module is tested and judged whether the cell voltage test signal, be, execution in step (14); No, execution in step (2);
(14), the voltage sample module is carried out sample detecting to cell voltage;
(15), processor module calculates the difference A of the battery low-voltage alarm threshold value of battery nominal voltage value and setting, and establish sample detecting to battery voltage value and the difference of the battery low-voltage alarm threshold value of setting be B, calculate and judge magnitude relationship between difference A and difference B;
As B 〉=80%A, execution in step (16);
Work as 80%A〉B 〉=60%A, execution in step (17);
Work as 60%A〉B 〉=40%A, execution in step (18);
Work as 40%A〉B 〉=20%A, execution in step (19);
Work as 20%A〉B 〉=0%A, execution in step (20);
(16), LED light flicker 5 times, alarm module is blown a whistle 5 times, and execution in step (2);
(17), LED light flicker 4 times, alarm module is blown a whistle 4 times, and execution in step (2);
(18), LED light flicker 3 times, alarm module is blown a whistle 3 times, and execution in step (2);
(19), LED light flicker 2 times, alarm module is blown a whistle 2 times, and execution in step (2);
(20), LED light flicker 1 time, alarm module is blown a whistle 1 time, and execution in step (2).
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| CN107240249A (en) * | 2017-07-18 | 2017-10-10 | 深圳市饮之源贸易有限公司 | Infra-red remote control formula alarm and its remote control thereof |
| CN111986434A (en) * | 2020-08-26 | 2020-11-24 | 广东宝利建设有限公司 | Intelligent fire-fighting early warning system capable of detecting fire in real time |
| CN112703537A (en) * | 2018-09-04 | 2021-04-23 | Abb 瑞士股份有限公司 | Techniques for managing security at an industrial site |
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| CN202330279U (en) * | 2011-12-13 | 2012-07-11 | 山东省科学院自动化研究所 | Distant controlled infrared inflammable gas detector |
| CN203204742U (en) * | 2013-02-01 | 2013-09-18 | 深圳市赋安安全系统有限公司 | Independent fire detection alarm |
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| CN107240249A (en) * | 2017-07-18 | 2017-10-10 | 深圳市饮之源贸易有限公司 | Infra-red remote control formula alarm and its remote control thereof |
| CN112703537A (en) * | 2018-09-04 | 2021-04-23 | Abb 瑞士股份有限公司 | Techniques for managing security at an industrial site |
| CN111986434A (en) * | 2020-08-26 | 2020-11-24 | 广东宝利建设有限公司 | Intelligent fire-fighting early warning system capable of detecting fire in real time |
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