CN101783056A - Point-type complex fire detector based on mechanical type temperature sensing element and alarm method thereof - Google Patents
Point-type complex fire detector based on mechanical type temperature sensing element and alarm method thereof Download PDFInfo
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Abstract
The invention relates to a point-type complex fire detector based on a mechanical type temperature sensing element and an alarm method thereof. The detector comprises a shell, a mechanical type temperature-sensing sensor, a smoke-sensing sensor, a gas sensor or a flame sensor, an indicating lamp, an alarm, a control device and a power supply. The point-type complex fire detector based on a mechanical type temperature sensing element starts the smoke-sensing sensor, the flame sensor, the gas sensor and an electronic type temperature sensor by utilizing the passive action of the mechanical type temperature sensing element, thereby saving power and greatly improving the alarm reliability of the temperature sensing or smoke sensing or flame or gas fire detector under the condition of single use; and the invention can accurately and reliably finish all functions of detection, alarm, control and extinguishment of a small fire automatic extinguishing system particularly without utilizing alarm control of a fire alarm control host machine in a place without a power supply or with difficult power supply connection. The alarm method is simple and convenient.
Description
Technical field
The present invention relates to a kind of point type combined fire detector and alarm method thereof, particularly relate to a kind of point type combined fire detector and alarm method thereof based on the mechanical type temperature-sensing element.
Background technology
Fire alarm system great majority commonly used at present are made up of fire detector, manual pull station and controlling alarm main frame.When fire detector detects the fire generation, or there is the people to find fire and when pressing manual pull station, these devices will detect or induced signal sends the controlling alarm main frame to immediately, and the controlling alarm main frame receives the extinguishing device that links immediately behind this signal and puts out a fire.But this fire alarm system needs constantly the state of detecting element in the system and linkage element to be monitored, therefore need to be equipped with reliable power supply, and consumed power, therefore can't use this system in the place that does not have power supply or power supply to insert difficulty, also must monitor control to this system simultaneously by the controlling alarm main frame.
In addition, in No. the 200620167492.4th, the Chinese patent a kind of suspension type pulse dry powder automatic fire extinguisher is disclosed.This device comprises housing 4 and start assembly; ABC powder extinguishing agent 3 and aerogenesis assembly are housed in its middle shell 4, and the bottom of housing 4 is provided with spout, and the spout place is provided with sealed aluminum film 2; The aerogenesis assembly is installed in the inside of housing 4, comprises steel shell 7, aluminium film 5 and is contained in gas generator propellant 6 in steel shell 7 and the aluminium film 5; Start assembly has thermal initiator 13 and electric initiator 10, and thermal initiator 13 all links to each other with gas generator propellant 6 with electric initiator 10.When environment temperature is raise; thermal initiator 13 spontaneous combustions; and heat conducted to gas generator propellant 6; thereby gas generator propellant 6 is ignited and moment generation flue gas; this flue gas will break through aluminium film 5 and promote powder extinguishing agent 3, and powder extinguishing agent 3 breaks through sealed aluminum film 2 again and is ejected into protected district then.Though under normal circumstances this device does not need working power or battery, but reason owing to environment, perhaps thermal initiator 13 is provided with unreasonable, therefore during breaking out of fire thermal initiator 13 just might perception less than, at this moment, wait until automatic startup, the possible intensity of a fire is big, even adopt manual electric Starting mode to come starter gear to put out a fire, also might enlarge, thereby cause bigger loss because of finding the untimely intensity of a fire that makes by electric initiator 10.In addition, above-mentioned these fire alarm installations can only be monitored temperature, so testing result is more single, so the warning reliability is low.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide does not need working power under a kind of normal condition, and higher point type combined fire detector and the alarm method thereof based on the mechanical type temperature-sensing element of warning reliability.
In order to achieve the above object, the point type combined fire detector based on the mechanical type temperature-sensing element provided by the invention comprises at least a, pilot lamp, warning horn, control device and the power supply in housing, mechanical type temperature-sensitive sensor, sense smoke sensor and gas sensor and flame sensor and the electronic temperature sensor; Be formed with a plurality of mouths that advance on the front end face of its middle shell; Mechanical type temperature-sensitive sensor, sense smoke sensor, gas sensor, flame sensor and electronic temperature sensor are installed in the inside of housing; Pilot lamp and warning horn are installed on the front end face of housing; Control device is electrically connected with mechanical type temperature-sensitive sensor, sense smoke sensor, gas sensor, flame sensor, electronic temperature sensor, pilot lamp and warning horn; Power supply is battery or the external power supply that is installed in enclosure interior, is used to whole fire detector power supply.
Described control device comprises at least a, signal output unit and the external control unit in microprocessor, photoelectric conversion unit and concentration converting unit and flame intensity and energy conversion unit and the temperature transition unit; Wherein:
Microprocessor is used for the signal of photoelectric conversion unit and concentration converting unit and flame intensity and energy conversion unit transmission is carried out analog to digital conversion, analyze then, judge, and when judging breaking out of fire, export control signal to signal output unit and external control unit;
Photoelectric conversion unit, one end links to each other with the sense smoke sensor, the other end joins by signal amplification unit and microprocessor, is used for the detected smog light signal of sense smoke sensor is converted to current signal, sends microprocessor to then after signal amplification unit amplifies;
The concentration converting unit, one end links to each other with gas sensor, the other end joins by signal amplification unit and microprocessor, is used for the detected gas concentration signal of gas sensor is converted to current signal, sends microprocessor to then after signal amplification unit amplifies;
Flame intensity and energy conversion unit, one end links to each other with flame sensor, the other end joins by signal amplification unit and microprocessor, is used for detected flame intensity of flame sensor and energy signal are converted to current signal, sends microprocessor to then after signal amplification unit amplifies;
The temperature transition unit, one end links to each other with electronic temperature sensor, the other end joins by signal amplification unit and microprocessor, is used for the detected environment temperature of electronic temperature sensor is converted to current signal, sends microprocessor to then after signal amplification unit amplifies;
Signal output unit, an end links to each other with microprocessor, and the other end and pilot lamp and warning horn join, and export the sound and light alarm signal by pilot lamp and warning horn when breaking out of fire under the control of microprocessor;
External control unit, an end links to each other with microprocessor, and the other end and extinguishing device join, and start the extinguishing device that links to each other with this fire detector and put out a fire when breaking out of fire under the control of microprocessor.
Described mechanical type temperature-sensitive sensor is a kind of in constant temperature or differential temperature thermometal temperature detect switch (TDS), different constant temperature thermometal temperature detect switch (TDS), constant temperature or differential temperature bellows-type differential temperature switch or the different constant temperature bellows-type differential temperature switch; When mechanical type temperature-sensitive sensor was constant temperature sensor in constant temperature or the different constant temperature, its action threshold value was decided according to the high ambient temperature in installation site, generally chooses in 0 ℃～120 ℃ scopes; When mechanical type temperature-sensitive sensor 2 was differential temperature sensor in differential temperature or the different constant temperature, its action threshold value was chosen in 1～39 ℃/second scope.
Described sense smoke sensor is ionic smoke sensor sensor or photoelectric smoke sensor.
Described gas sensor adopts a kind of in catalytic combustion type, galvanochemistry and the semiconductor-type.
Described flame sensor adopts a kind of in infra red flame formula, ultraviolet flame formula and the two waveband image-type.
The alarm method of the point type combined fire detector based on the mechanical type temperature-sensing element provided by the invention comprises the following step that carries out in order:
1) the real-time monitoring of environmental variation of temperature of mechanical type temperature-sensitive sensor;
2) when environment temperature reaches the action threshold value of mechanical type temperature-sensitive sensor, it will connect internal cell or external power supply, thereby be whole fire detector power supply;
3) begin to detect respectively smoke particle concentration, gas concentration, flame intensity and energy and environment temperature after sense smoke sensor, gas sensor, flame sensor and/or electronic temperature sensor power up;
4) the sense smoke sensor only is set in fire detector, gas sensor, under a kind of situation in flame sensor and the electronic temperature sensor, the smoke particle concentration that arrives when these sensor, gas concentration, when flame intensity and energy and environment temperature reach corresponding alarm threshold value, or the sense smoke sensor is set in fire detector, gas sensor, under at least two kinds of situations in flame sensor and the electronic temperature sensor, the smoke particle concentration that arrives when these sensor, gas concentration, when flame intensity and energy and/or environment temperature all reach corresponding alarm threshold value, under the control of microprocessor,, start the extinguishing device that links to each other with this fire detector simultaneously and put out a fire by pilot lamp and warning horn output sound and light alarm signal.
Point type combined fire detector based on the mechanical type temperature-sensing element provided by the invention is to utilize the passive action of mechanical type temperature-sensing element to start sense cigarette, flame, gas and electronic temperature sensor, electric energy not only can be saved like this, but also the warning reliability under temperature-sensitive or sense cigarette or flame or the independent operating position of gas fire detector can be improved greatly; Especially do not needing to utilize under the situation of fire alarm main control system controlling alarm, do not having power supply or power supply to insert difficult place, can finish the repertoire of a small-sized fire automatic fire extinguishing system accurately and reliably: detection, warning, control, fire extinguishing.In addition, this alarm method is simple and convenient.
Description of drawings
Fig. 1 is a kind of suspension type pulse dry powder automatic fire extinguisher structural representation of prior art.
Fig. 2 is the point type combined fire detector embodiment one STRUCTURE DECOMPOSITION synoptic diagram based on the mechanical type temperature-sensing element provided by the invention.
Fig. 3 is for constituting block diagram based on control device in the point type combined fire detector of mechanical type temperature-sensing element shown in Fig. 2.
Fig. 4 is the point type combined fire detector embodiment two STRUCTURE DECOMPOSITION synoptic diagram based on the mechanical type temperature-sensing element provided by the invention.
Fig. 5 is for constituting block diagram based on control device in the point type combined fire detector of mechanical type temperature-sensing element shown in Fig. 4.
Fig. 6 is the point type combined fire detector embodiment three STRUCTURE DECOMPOSITION synoptic diagram based on the mechanical type temperature-sensing element provided by the invention.
Fig. 7 is for constituting block diagram based on control device in the point type combined fire detector of mechanical type temperature-sensing element shown in Fig. 6.
Fig. 8 is the point type combined fire detector embodiment four STRUCTURE DECOMPOSITION synoptic diagram based on the mechanical type temperature-sensing element provided by the invention;
Fig. 9 is for constituting block diagram based on control device in the point type combined fire detector of mechanical type temperature-sensing element shown in Fig. 8.
Figure 10 is the point type combined fire detector embodiment five STRUCTURE DECOMPOSITION synoptic diagram based on the mechanical type temperature-sensing element provided by the invention.
Figure 11 is for constituting block diagram based on control device in the point type combined fire detector of mechanical type temperature-sensing element shown in Figure 10.
Embodiment
Below in conjunction with drawings and the specific embodiments point type combined fire detector and the alarm method thereof based on the mechanical type temperature-sensing element provided by the invention is elaborated.
Embodiment one:
As shown in Figure 2, the point type combined fire detector based on the mechanical type temperature-sensing element that provides of present embodiment comprises housing 1, mechanical type temperature-sensitive sensor 2, sense smoke sensor 3, pilot lamp 4, warning horn 5, control device 6 and power supply; Be formed with a plurality of mouths 8 that advance on the front end face 7 of its middle shell 1; Mechanical type temperature-sensitive sensor 2 and sense smoke sensor 3 are installed in the inside of housing 1; Pilot lamp 4 and warning horn 5 are installed on the front end face 7 of housing 1; Control device 6 is electrically connected with mechanical type temperature-sensitive sensor 2, sense smoke sensor 3, pilot lamp 4 and warning horn 5; Power supply is battery 9 or the external power supply that is installed in housing 1 inside, is used to whole fire detector power supply.
As shown in Figure 3, described control device 6 comprises microprocessor 10, photoelectric conversion unit 11, signal output unit 12 and external control unit 13; Wherein:
Described mechanical type temperature-sensitive sensor 2 is a kind of in constant temperature or differential temperature thermometal temperature detect switch (TDS), different constant temperature thermometal temperature detect switch (TDS), constant temperature or differential temperature bellows-type differential temperature switch or the different constant temperature bellows-type differential temperature switch.When mechanical type temperature-sensitive sensor 2 was constant temperature sensor in constant temperature or the different constant temperature, its action threshold value was decided according to the high ambient temperature in installation site, generally chooses in 0 ℃～120 ℃ scopes; When mechanical type temperature-sensitive sensor 2 was differential temperature sensor in differential temperature or the different constant temperature, its action threshold value was chosen in 1～39 ℃/second scope.
Described sense smoke sensor 3 is provided with acquisition cavity, is provided with a pair of infrared transmitting tube and infrared receiving tube in the acquisition cavity.Maze-type structure under the normal condition in the acquisition cavity makes infrared receiving tube not receive the Infrared that infrared transmitting tube sends, in the time of in smog enters into acquisition cavity, smoke particle has scattering process to infrared light, this scattered light will be received by infrared receiving tube, at this moment infrared receiving tube will produce photocurrent, thereby realize the detection to smokescope.In addition, sense smoke sensor 3 can be exported passive or the active switch fire alarm, puts out a fire to start extinguishing device; Also can be with interface shape output fire alarm, put out a fire to start extinguishing device.In addition, sense smoke sensor 3 can be the ionic smoke sensor sensor, also can be the photoelectric smoke sensor.
In addition, can be connected by wireless or wired mode between described microprocessor 10 and pilot lamp 4 and the warning horn 5.
The point type combined fire detector alarm method based on the mechanical type temperature-sensing element that present embodiment provides comprises the following step that carries out in order:
1) mechanical type temperature-sensitive sensor 2 real-time monitoring of environmental variation of temperature;
2) when environment temperature reaches the action threshold value of mechanical type temperature-sensitive sensor 2, it will connect internal cell 9 or external power supply, thereby be whole fire detector power supply;
3) begin to detect smoke particle concentration after sense smoke sensor 3 powers up;
4) when sense smoke sensor 3 detected smoke particle concentration reach its alarm threshold value, under the control of microprocessor 10,, start the extinguishing device that links to each other with this fire detector simultaneously and put out a fire by pilot lamp 4 and warning horn 5 output sound and light alarm signals.
The point type combined fire detector principle of work based on the mechanical type temperature-sensing element that present embodiment provides is as follows:
Under the normal condition, this fire detector is disconnected battery 9 or external power supply, so not power consumption.During breaking out of fire, environment temperature will raise, and when environment temperature reaches the action threshold value of mechanical type temperature-sensitive sensor 2, it will connect internal cell 9 or external power supply, thereby be whole fire detector power supply.Sense smoke sensor 3 will be gathered the smoke particle concentration light signal that mouth 8 enters into housing 1 inside that advances from housing 1 front end face 7 after powering up in real time, afterwards this light signal is sent to the photoelectric conversion unit 11 on the control device 6, by photoelectric conversion unit 11 this conversion of signals is become electric signal again, and after signal amplification unit amplifies, send microprocessor 10 to.Microprocessor 10 carries out the conversion of modulus word with it after receiving above-mentioned signal, analyze then, judge, and when judging breaking out of fire, send the sound and light alarm signal by pilot lamp 4 and warning horn 5 on housing 1 front end face 7, start the extinguishing device that links to each other with this fire detector simultaneously and put out a fire.
In addition, microprocessor 10 also can adopt cascade system to control other device that links to each other with this fire detector to carry out interrelated logic control.
Embodiment 2:
As Fig. 4, shown in Figure 5, the point type combined fire detector difference based on the mechanical type temperature-sensing element that point type combined fire detector and the embodiment 1 based on the mechanical type temperature-sensing element that present embodiment provides provides is to replace feeling smoke sensor 3 with gas sensor 15.Gas sensor 15 adopts catalytic combustion type, galvanochemistry or semiconductor-type, the gas concentration that produces when being used to detect breaking out of fire, and with the 11 corresponding concentration converting units 16 that become of the photoelectric conversion unit in the timed unit 6, other structure is identical.
Embodiment 3:
As Fig. 6, shown in Figure 7, the point type combined fire detector difference based on the mechanical type temperature-sensing element that point type combined fire detector and the embodiment 1 based on the mechanical type temperature-sensing element that present embodiment provides provides is to replace feeling smoke sensor 3 with flame sensor 17.Flame sensor 17 adopts infra red flame formula, ultraviolet flame formula or two waveband image-type, flame intensity that produces when being used to detect breaking out of fire and energy, with 11 corresponding flame intensity and the energy conversion unit 18 of becoming of the photoelectric conversion unit in the timed unit 6, other structure is identical.
Embodiment 4:
As Fig. 8, shown in Figure 9, the point type combined fire detector difference based on the mechanical type temperature-sensing element that point type combined fire detector and the embodiment 1 based on the mechanical type temperature-sensing element that present embodiment provides provides is to replace feeling smoke sensor 3 with electronic temperature sensor 19 environment temperature when being used to detect breaking out of fire.With the 11 corresponding temperature transition unit 20 that become of the photoelectric conversion unit in the timed unit 6, other structure is identical.
Embodiment 5:
As Figure 10; shown in Figure 11; the point type combined fire detector difference based on the mechanical type temperature-sensing element that point type combined fire detector and the embodiment 1 based on the mechanical type temperature-sensing element that present embodiment provides provides is to install in this fire detector thoughts smoke sensor 3; gas sensor 15; in flame sensor 17 and the electronic temperature sensor 19 at least two kinds; with the smoke particle concentration to producing during breaking out of fire in the protection zone respectively; gas concentration; flame intensity and energy and environment temperature detect in real time; with the corresponding photoelectric conversion unit 11 that comprises in the timed unit 6; concentration converting unit 16; flame intensity and energy conversion unit 18 and temperature transition unit 20, other structure is identical.
Claims (7)
1. point type combined fire detector based on the mechanical type temperature-sensing element is characterized in that: described point type combined fire detector based on the mechanical type temperature-sensing element comprises at least a, pilot lamp (4), warning horn (5), control device (6) and the power supply in housing (1), mechanical type temperature-sensitive sensor (2), sense smoke sensor (3) and gas sensor (15) and flame sensor (17) and the electronic temperature sensor (19); Be formed with a plurality of mouths (8) that advance on the front end face (7) of its middle shell (1); Mechanical type temperature-sensitive sensor (2), sense smoke sensor (3), gas sensor (15), flame sensor (17) and electronic temperature sensor (19) are installed in the inside of housing (1); Pilot lamp (4) and warning horn (5) are installed on the front end face (7) of housing (1); Control device (6) is electrically connected with mechanical type temperature-sensitive sensor (2), sense smoke sensor (3), gas sensor (15), flame sensor (17), electronic temperature sensor (19), pilot lamp (4) and warning horn (5); Power supply is used to whole fire detector power supply for being installed in housing (1) inner battery (9) or external power supply.
2. the point type combined fire detector based on the mechanical type temperature-sensing element according to claim 1 is characterized in that: described control device (6) comprises at least a, signal output unit (12) and the external control unit (13) in microprocessor (10), photoelectric conversion unit (11) and concentration converting unit (16) and flame intensity and energy conversion unit (18) and temperature transition unit (20); Wherein:
Microprocessor (10) is used for the signal of photoelectric conversion unit (11) and concentration converting unit (16) and flame intensity and energy conversion unit (18) transmission is carried out analog to digital conversion, analyze then, judge, and when judging breaking out of fire, export control signal to signal output unit (12) and external control unit (13);
Photoelectric conversion unit (11), one end links to each other with sense smoke sensor (3), the other end joins by signal amplification unit and microprocessor (10), be used for the detected smog light signal of sense smoke sensor (3) is converted to current signal, after signal amplification unit amplifies, send microprocessor (10) to then;
Concentration converting unit (16), one end links to each other with gas sensor (15), the other end joins by signal amplification unit and microprocessor (10), be used for the detected gas concentration signal of gas sensor (15) is converted to current signal, after signal amplification unit amplifies, send microprocessor (10) to then;
Flame intensity and energy conversion unit (18), one end links to each other with flame sensor (17), the other end joins by signal amplification unit and microprocessor (10), be used for detected flame intensity of flame sensor (17) and energy signal are converted to current signal, after signal amplification unit amplifies, send microprocessor (10) to then;
Temperature transition unit (20), one end links to each other with electronic temperature sensor (19), the other end joins by signal amplification unit and microprocessor (10), be used for the detected environment temperature of electronic temperature sensor (19) is converted to current signal, after signal amplification unit amplifies, send microprocessor (10) to then;
Signal output unit (12), an end links to each other with microprocessor (10), and the other end and pilot lamp (4) and warning horn (5) join, and export the sound and light alarm signal by pilot lamp (4) and warning horn (5) when breaking out of fire under the control of microprocessor (10);
External control unit (13), an end links to each other with microprocessor (10), and the other end and extinguishing device join, and start the extinguishing device that links to each other with this fire detector and put out a fire when breaking out of fire under the control of microprocessor (10).
3. the point type combined fire detector based on the mechanical type temperature-sensing element according to claim 1 is characterized in that: a kind of in constant temperature or differential temperature thermometal temperature detect switch (TDS), different constant temperature thermometal temperature detect switch (TDS), constant temperature or differential temperature bellows-type differential temperature switch or the different constant temperature bellows-type differential temperature switch of described mechanical type temperature-sensitive sensor (2); When mechanical type temperature-sensitive sensor (2) was constant temperature sensor in constant temperature or the different constant temperature, its action threshold value was decided according to the high ambient temperature in installation site, generally chooses in 0 ℃～120 ℃ scopes; When mechanical type temperature-sensitive sensor (2) was differential temperature sensor in differential temperature or the different constant temperature, its action threshold value was chosen in 1～39 ℃/second scope.
4. the point type combined fire detector based on the mechanical type temperature-sensing element according to claim 1 is characterized in that: described sense smoke sensor (3) is ionic smoke sensor sensor or photoelectric smoke sensor.
5. the point type combined fire detector based on the mechanical type temperature-sensing element according to claim 1 is characterized in that: described gas sensor (15) adopts a kind of in catalytic combustion type, galvanochemistry and the semiconductor-type.
6. the point type combined fire detector based on the mechanical type temperature-sensing element according to claim 1 is characterized in that: described flame sensor (17) adopts a kind of in infra red flame formula, ultraviolet flame formula and the two waveband image-type.
7. the alarm method of the point type combined fire detector based on the mechanical type temperature-sensing element as claimed in claim 1, it is characterized in that: described alarm method comprises the following step that carries out in order:
1) the real-time monitoring of environmental variation of temperature of mechanical type temperature-sensitive sensor (2);
2) when environment temperature reaches the action threshold value of mechanical type temperature-sensitive sensor (2), it will connect internal cell (9) or external power supply, thereby be whole fire detector power supply;
3) begin to detect respectively smoke particle concentration, gas concentration, flame intensity and energy and environment temperature after sense smoke sensor (3), gas sensor (15), flame sensor (17) and/or electronic temperature sensor (19) power up;
4) sense smoke sensor (3) only is set in fire detector, gas sensor (15), under a kind of situation in flame sensor (17) and the electronic temperature sensor (19), the smoke particle concentration that arrives when these sensor, gas concentration, when flame intensity and energy and environment temperature reach corresponding alarm threshold value, or in fire detector, be provided with the sense smoke sensor (3), gas sensor (15), under at least two kinds of situations in flame sensor (17) and the electronic temperature sensor (19), the smoke particle concentration that arrives when these sensor, gas concentration, when flame intensity and energy and/or environment temperature all reach corresponding alarm threshold value, under the control of microprocessor (10),, start the extinguishing device that links to each other with this fire detector simultaneously and put out a fire by pilot lamp (4) and warning horn (5) output sound and light alarm signal.
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| CN102945584A (en) * | 2012-11-09 | 2013-02-27 | 百年金海安防科技有限公司 | Intelligent fire fighting monitoring system for dangerous chemical production field |
| CN103065421A (en) * | 2011-10-24 | 2013-04-24 | 成都宏天电传工程有限公司 | Fire disaster monitor and control system |
| CN103247126A (en) * | 2013-05-06 | 2013-08-14 | 西安博康电子有限公司 | All-around dot-mode composite fire detector |
| CN103729962A (en) * | 2012-10-10 | 2014-04-16 | 中国北车集团大同电力机车有限责任公司 | Apparatus panel cabinet fireproof monitoring method, device and system |
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| CN106355820A (en) * | 2016-10-25 | 2017-01-25 | 上海松江飞繁电子有限公司 | Smoke-fire alarm |
| CN107248255A (en) * | 2017-07-31 | 2017-10-13 | 南京信息工程大学 | A kind of cable shaft intelligent Fire Alarm-control System |
| CN110619730A (en) * | 2018-06-20 | 2019-12-27 | 能美防灾株式会社 | Fire detector |
| CN111028465A (en) * | 2019-11-07 | 2020-04-17 | 唐志玉 | Smoke temperature detector |
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| CN103247126A (en) * | 2013-05-06 | 2013-08-14 | 西安博康电子有限公司 | All-around dot-mode composite fire detector |
| CN103247126B (en) * | 2013-05-06 | 2015-04-15 | 西安博康电子有限公司 | All-around dot-mode composite fire detector |
| CN106355820A (en) * | 2016-10-25 | 2017-01-25 | 上海松江飞繁电子有限公司 | Smoke-fire alarm |
| CN106355820B (en) * | 2016-10-25 | 2018-09-28 | 上海松江飞繁电子有限公司 | A kind of smog fire-alarm |
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