CN102708648A - Alarming method adopting data fusion method to alarm for linear temperature-sensitive fire detector - Google Patents
Alarming method adopting data fusion method to alarm for linear temperature-sensitive fire detector Download PDFInfo
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- CN102708648A CN102708648A CN2012101837885A CN201210183788A CN102708648A CN 102708648 A CN102708648 A CN 102708648A CN 2012101837885 A CN2012101837885 A CN 2012101837885A CN 201210183788 A CN201210183788 A CN 201210183788A CN 102708648 A CN102708648 A CN 102708648A
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Abstract
The invention provides an alarming method adopting a data fusion method to alarm for a linear temperature-sensitive fire detector. The linear temperature-sensitive fire detector comprises a linear temperature-sensing element, as well as a switching box and an electronic switch which are respectively connected to the two ends of the linear temperature-sensing element, wherein the linear temperature-sensing element comprises two detection conductors arranged in parallel and NTC (Negative Temperature Coefficient) characteristic separating layer arranged between the detection conductors in parallel; and at least one of the detection conductors has the PTC (Positive Temperature Coefficient) characteristic. The linear temperature-sensing fire detector adopting the data fusion method to alarm, provided by the invention and can utilize two inequivalent electrical parameters to eliminate the influence on the fire alarm function from the heating length on the linear temperature-sensing element, thereby improving the alarm accuracy of the fire detector and effectively reducing false alarm of the fire detector.
Description
The present invention is that application number is dividing an application of 200910068387.3 application for a patent for invention.
Technical field
The present invention relates to a kind of line-type heat detector, particularly relate to a kind of line-type heat detector that adopts the data fusion mode to report to the police.
Background technology
Line style constant temperature, differential temperature or different constant temperature fire detector are line-type heat detectors commonly used at present; The end that it mainly comprises single line type temperature sensing element (NTC type or thermocouple type) and is connected linear temperature sensor; Can be in real time certain electrical quantity of linear temperature sensor be detected, and carry out the boxcar of fire alarm according to the comparative result of the alarm threshold value of above-mentioned electric parameter measurement value and setting.But; There is following point in above-mentioned line-type heat detector: the size of the electrical quantity of being measured by boxcar and rate of change are three kinds of synthesis result that mainly influence parameter such as the temperature of linear temperature sensor environment for use temperature, heated portion and the length of heated portion, so it can not reflect the temperature level of heated portion on the linear temperature sensor and the size of rate of temperature change fully.Technical standard according to line-type heat detector; A qualified line-type heat detector must and be failure to actuate and test two detections through the test of the action under certain test condition, and whether qualified products is mainly judged according to this parameter of heated portion temperature on the linear temperature sensor.Because the single linear temperature sensor of above-mentioned employing; And the line-type heat detector that carries out fire alarm according to single electrical parameters detection result can not determine the temperature level of heated portion on the linear temperature sensor and the size of rate of temperature change exactly; Thereby can't under fire condition, report to the police exactly, and be difficult to the action test and two tests of test of being failure to actuate of carrying out through according to the technical standard of line-type heat detector and to line-type heat detector.
Summary of the invention
In order to address the above problem; The object of the present invention is to provide and a kind ofly can utilize the opening and closing of electronic switch that same two kinds of inequivalence electrical quantitys that linear temperature sensor detected are carried out data fusion, carry out the line-type heat detector of fire alarm with this.
In order to achieve the above object, the employing data fusion mode provided by the invention line-type heat detector of reporting to the police comprises single line type temperature sensing element; Be connected an end of linear temperature sensor, can be in real time the electrical quantity of linear temperature sensor be detected, and carry out the boxcar of fire alarm according to the comparative result of the alarm threshold value of above-mentioned electric parameter measurement value and setting; With the electronic switch that is connected the linear temperature sensor other end; Wherein linear temperature sensor comprises two parallel detecting conductors that are provided with and parallelly is arranged on the NTC characteristic barrier layer between the detecting conductor, and in the detecting conductor at least one for having the detecting conductor of ptc characteristics.
Described detecting conductor adopts material different to process.
Described electronic switch causes boxcar through lead and is set together with boxcar.
The line-type heat detector that employing data fusion mode provided by the invention is reported to the police is to utilize the unlatching and the closed measurement electrical quantity that changes linear temperature sensor that is connected the terminal electronic switch of single line type temperature sensing element.Because linear temperature sensor was mainly parallelly connected NTC characteristic when electronic switch was opened, and linear temperature sensor is mainly the series connection ptc characteristics during electronic switch closes, so the corresponding electrical quantity inequivalence measured respectively of boxcar.Two corresponding down electrical parameter values of the real-time alternately detected electrons switch two states of boxcar; And detected two electrical parameter values are carried out data fusion in boxcar; Then result and alarm threshold value are compared, determine whether carrying out fire alarm according to comparative result at last.Because the present invention can utilize the electrical quantity of two inequivalences to eliminate to be heated on the linear temperature sensor influence of length to the fire alarm function; Thereby can improve the warning accuracy of fire detector, and can reduce the false alarm of fire detector effectively.
Description of drawings
The line-type heat detector structural representation that Fig. 1 reports to the police for employing data fusion mode provided by the invention.
The line-type heat detector part-structure equivalent circuit diagram that employing data fusion mode provided by the invention was reported to the police when Fig. 2 was in opening for electronic switch.
The line-type heat detector part-structure equivalent circuit diagram that employing data fusion mode provided by the invention was reported to the police when Fig. 3 was in closure state for electronic switch.
Embodiment
The line-type heat detector of employing data fusion mode provided by the invention being reported to the police below in conjunction with accompanying drawing and specific embodiment is elaborated.
Embodiment one:
As shown in Figure 1, the line-type heat detector that the employing data fusion mode that present embodiment provides is reported to the police comprises single line type temperature sensing element 1; Be connected an end of linear temperature sensor 1, can be in real time the electrical quantity of linear temperature sensor 1 be detected, and carry out the boxcar 3 of fire alarm according to the comparative result of the alarm threshold value of above-mentioned electric parameter measurement value and setting; With the electronic switch 2 that is connected linear temperature sensor 1 other end; Wherein linear temperature sensor 1 comprises that two parallel detecting conductors that are provided with 4,5 are arranged on the NTC characteristic barrier layer 6 between the detecting conductor 4,5 with parallel, and in the detecting conductor 4,5 at least one for having the detecting conductor of ptc characteristics.
During operate as normal, the unlatching of alternately being controlled electronic switch 2 by boxcar 3 is with closed, and promptly the output contact of electronic switch 2 alternately is in and opens and closure state, and the time of unlatching and closure can freely be provided with.
The line-type heat detector part-structure equivalent circuit diagram that employing data fusion mode provided by the invention was reported to the police when Fig. 2 was in opening for electronic switch.Omitted boxcar 3 among the figure.As shown in Figure 2; When boxcar 3 control electronic switches 2 were in opening, the NTC characteristic barrier layer 6 between two detecting conductors 4,5 can equivalence be parallelly connected numerous temperature variant variable resistor R1; At this moment because detecting conductor 4; 5 resistance own want much little with respect to the parallel resistance value of variable resistor R1, so the size of boxcar 3 detected resistance value Ra is mainly decided by the resistance value that is connected in parallel on the numerous variable resistor R1 between two detecting conductors 4,5.
The line-type heat detector part-structure equivalent circuit diagram that employing data fusion mode provided by the invention was reported to the police when Fig. 3 was in closure state for electronic switch.Omitted boxcar 3 among the figure.As shown in Figure 3; When boxcar 3 control electronic switches 2 are in closure state; The detecting conductor that has ptc characteristics on the linear temperature sensor 1 can equivalence be a conductor that is together in series by numerous temperature variant variable resistor R2; At this moment because detecting conductor 4; The parallel resistance value of numerous variable resistor R1 between 5 is much bigger with respect to the series impedance of resistance in series R2, so the size of boxcar 3 detected resistance value Rb is mainly decided by the resistance value of numerous temperature variant variable resistor R2.
Therefore, electronic switch 2 is in to be opened and closure state following time, and the resistance value Ra and the Rb of boxcar 3 corresponding detections are electrical quantitys of two inequivalences.Such as sometime the section in (this time period can be set arbitrarily, and if the time period set very shortly, can be similar to a certain moment); When boxcar 3 is alternately controlled the unlatching and the closure state of electronic switch 2, simultaneously described linear temperature sensor 1 is hocketed and detect and obtain two resistance value Ra1, after the Rb1; With above-mentioned two resistance value Ra1, Rb1 carries out Data Fusion in boxcar 3, is about to Ra1; Function f (the Ra that comprises two resistance parameter Ra and Rb at least that one of Rb1 substitution configures in boxcar 3 in advance; Rb ...) in, obtain a functional value F in the above-mentioned time period thus
(Ra1, Rb1), last again with the functional value F that obtains
(Ra1, Rb1)Compare with predefined alarm threshold value in the boxcar 3.According to comparative result, judge whether to send fire alarm signal by boxcar 3.
Embodiment two:
Present embodiment is the improvement on embodiment one basis, and difference is to adopt material different to process two detecting conductors 4,5, and wherein at least one detecting conductor is the detecting conductor with ptc characteristics.
Like this; Boxcar 3 is in two kinds of electrical quantitys that detected under unlatching and the closure state at electronic switch 2 and is respectively voltage (or electromotive force) and resistance signal; Promptly when electronic switch 2 was in opening, boxcar 3 detected electrical quantitys were voltage (or electromotive force) signal Ua; And when electronic switch 2 was in closure state, boxcar 3 detected electrical quantitys were resistance signal Rb.
During operate as normal, the unlatching of alternately being controlled electronic switch 2 by boxcar 3 is with closed, and promptly the output contact of electronic switch 2 alternately is in and opens and closure state, and the time of unlatching and closure can freely be provided with.
When boxcar 3 control electronic switches 2 are opening; Because detecting conductor 4,5th is processed by different materials, and detecting conductor 4; Be provided with NTC characteristic barrier layer 6 between 5; Therefore linear temperature sensor 1 has just constituted the linear temperature sensor of interim thermocouple characteristic, and at this moment the size of boxcar 3 detected voltages (or electromotive force) value Ua is mainly decided by the variation characteristic of the NTC characteristic barrier layer 3 that between two detecting conductors 4,5, is provided with heating temperature.
When boxcar 3 control electronic switches 2 are in closure state; The detecting conductor that has ptc characteristics on the linear temperature sensor 1 can equivalence be a conductor that is together in series by numerous temperature variant variable resistor R2; At this moment because two detecting conductors 4; NTC characteristic barrier layer 6 between 5 can equivalence be the numerous temperature variant variable resistor R1 of parallel connection; And this parallel resistance value is much bigger with respect to the series impedance of resistance in series R2, so the size of boxcar 3 detected resistance value Rb is mainly decided by the resistance value of numerous temperature variant variable resistor R2.
Therefore, electronic switch 2 is in to be opened and closure state following time, and voltage (or electromotive force) the value Ua and the resistance value Rb of boxcar 3 corresponding detections are electrical quantitys of two inequivalences, utilizes principle that data fusion reports to the police with embodiment one.
In addition, described electronic switch 2 can be following several kinds of modes, but is not limited thereto:
1) relay-type switch, the control mode that opens and closes of relay can be controlled in wireless mode or wired control mode;
2) diode-type switch, the opening and closing control mode and can control of diode by the electric power polarity conversion that is added in the diode two ends;
3) voltage stabilizing diode type switch, the opening and closing control mode and can control of voltage stabilizing diode by the supply voltage size that is added in the voltage stabilizing diode two ends;
4) triode type switch, the opening and closing control mode and can control of triode by the voltage swing that is added in transistor base.
In addition, described electronic switch 2 can also cause boxcar 3 and is set together with boxcar 3 through lead.
Claims (2)
1. line-type heat detector alarm method that adopts the data fusion mode to report to the police, detector comprises single line type temperature sensing element (1); Be connected an end of linear temperature sensor (1), can be in real time the electrical quantity of linear temperature sensor be detected, and carry out the boxcar (3) of fire alarm according to the comparative result of the alarm threshold value of above-mentioned electric parameter measurement value and setting; With the electronic switch (2) that is connected linear temperature sensor (1) other end; Wherein linear temperature sensor (1) comprises that two parallel detecting conductors (4,5) that are provided with are arranged on the NTC characteristic barrier layer (6) between the detecting conductor (4,5) with walking abreast; At least one is the detecting conductor with ptc characteristics in the described detecting conductor (4,5); It is characterized in that: described alarm method comprises the following step that carries out in order:
1) boxcar (3) is alternately controlled the unlatching and closure of electronic switch (2), controls electronic switch (2) when being in opening when boxcar (3), detects the resistance value Ra that is connected in parallel on the NTC characteristic barrier layer (6) between two detecting conductors (4,5); Control electronic switch (2) when being in closure state when boxcar (3), detect the resistance value Rb of detecting conductor with ptc characteristics;
2) with above-mentioned two resistance value Ra, the function f that comprises two resistance parameter Ra and Rb at least that one of Rb substitution configures in boxcar (3) in advance (Ra, Rb ...) in, obtain a functional value F in the above-mentioned time period thus
(Ra1, Rb1), last again with the functional value F that obtains
(Ra1, Rb1)Compare with predefined alarm threshold value in the boxcar (3),, judge whether to send fire alarm signal by boxcar (3) according to comparative result.
2. line-type heat detector alarm method that adopts the data fusion mode to report to the police, detector comprises single line type temperature sensing element (1); Be connected an end of linear temperature sensor (1), can be in real time the electrical quantity of linear temperature sensor be detected, and carry out the boxcar (3) of fire alarm according to the comparative result of the alarm threshold value of above-mentioned electric parameter measurement value and setting; With the electronic switch (2) that is connected linear temperature sensor (1) other end; Wherein linear temperature sensor (1) comprises that two parallel detecting conductors (4,5) that are provided with are arranged on the NTC characteristic barrier layer (6) between the detecting conductor (4,5) with parallel, and detecting conductor (4,5) employing material different is processed; At least one is the detecting conductor with ptc characteristics in the described detecting conductor (4,5); It is characterized in that: described alarm method comprises the following step that carries out in order:
1) boxcar (3) is alternately controlled the unlatching and closure of electronic switch (2), controls electronic switch (2) when being in opening when boxcar (3), detects the magnitude of voltage Ua that is connected in parallel on the NTC characteristic barrier layer (6) between two detecting conductors (4,5); Control electronic switch (2) when being in closure state when boxcar (3), detect the resistance value Rb of detecting conductor with ptc characteristics;
2) with above-mentioned two magnitude of voltage Ua, the function f that comprises voltage parameter Ua and resistance parameter Rb at least that one of resistance value Rb substitution configures in boxcar (3) in advance (Ua, Rb ...) in, obtain a functional value F in the above-mentioned time period thus
(Ua1, Rb1), last again with the functional value F that obtains
(Ua1, Rb1)Compare with predefined alarm threshold value in the boxcar (3),, judge whether to send fire alarm signal by boxcar (3) according to comparative result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101837885A CN102708648A (en) | 2009-04-07 | 2009-04-07 | Alarming method adopting data fusion method to alarm for linear temperature-sensitive fire detector |
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| CN2012101837885A CN102708648A (en) | 2009-04-07 | 2009-04-07 | Alarming method adopting data fusion method to alarm for linear temperature-sensitive fire detector |
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| CNA2009100683873A Division CN101510343A (en) | 2009-04-07 | 2009-04-07 | Linetype temperature-sensing fire detector capable of alarming by data fusion mode |
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| CN102708648A true CN102708648A (en) | 2012-10-03 |
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| CN2012101837885A Pending CN102708648A (en) | 2009-04-07 | 2009-04-07 | Alarming method adopting data fusion method to alarm for linear temperature-sensitive fire detector |
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Application publication date: 20121003 |