CN101286262A - Composite linear temperature-sensing fire disaster detector and alarming method - Google Patents
Composite linear temperature-sensing fire disaster detector and alarming method Download PDFInfo
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- CN101286262A CN101286262A CNA2008100534573A CN200810053457A CN101286262A CN 101286262 A CN101286262 A CN 101286262A CN A2008100534573 A CNA2008100534573 A CN A2008100534573A CN 200810053457 A CN200810053457 A CN 200810053457A CN 101286262 A CN101286262 A CN 101286262A
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Abstract
The invention relates to a combined-typed linear temperature-sensing fire detector and an alarming method thereof. The detector includes two bus linear temperature sensing components which are arranged in parallel and shunt-wound NTC simulative linear temperature sensing components and a switching box connected at one end of the linear temperature sensing component. A distance (Lj) between intelligent temperature detecting modules on the bus linear temperature sensing component is greater than 1 meter and is less than or equal to Lmax meter which is the allowed biggest available length when the fire detector individually adopts the NTC simulative linear temperature sensing component under the national standard. The fire detector and the alarming method of the invention arranges the bus linear temperature sensing component provided with the intelligent temperature detecting modules with a distribution density which is greater than 1 meter and the shunt-wound NTC simulative linear temperature sensing components in parallel, and also adopts a detecting box to respectively detect the electrical parameter of the two linear temperature sensing components to trigger the fire alarm according to the electrical parameter so as to effectively solve the contradiction between the sensitivity and reliability and response speed.
Description
Technical field
The present invention relates to a kind of line-type heat detector and alarm method thereof, particularly relate to a kind of composite linear temperature-sensing fire disaster detector and alarm method thereof.
Background technology
At present, line-type heat detector is a kind of broad-spectrum fire detector, mainly by a linear temperature sensor and an end that is connected linear temperature sensor, can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected, and form according to the boxcar that the size of temperature or warning electrical quantity (or sampled value) is sent fire alarm signal.Fig. 1 is a kind of bus-type digital quantity or analog linear temperature-sensing fire detecting device structural representation of prior art.As shown in Figure 1, the bus-type digital quantity of this prior art or analog linear temperature-sensing fire detecting device are made up of bus-type linear temperature sensor and the boxcar 1 that is connected bus-type linear temperature sensor one end; Wherein the bus-type linear temperature sensor comprises the many parallel leads 3 that are provided with and is installed in parallel several intelligent temperature detecting modules 2 between many leads 3, and the hygrosensor in the intelligent temperature detecting module 2 or be temperature switch, or be sensor for measuring temperature.When the bus-type linear temperature sensor on this bus-type digital quantity or the analog linear temperature-sensing fire detecting device is heated, boxcar 1 is is constantly patrolled and examined the temperature information of each intelligent temperature detecting module 2, and when the temperature of any intelligent temperature detecting module 2 wherein rose to setting value or its rate of change and reaches setting value, boxcar 1 sent the fire alarm signal immediately.But, there are following point in the bus-type digital quantity or the analog linear temperature-sensing fire detecting device of this prior art: 1. when the spacing between the intelligent temperature detecting module 2 during greater than 1 meter, when fire detector moves test, can't guarantee to have at least an intelligent temperature detecting module 2 to be among the heating cabinet, therefore also just can't satisfy the requirement (at present the minimum warning length of GB regulation fire detector smaller or equal to 1 meter) of GB GB16280-2005 the fire detector warning sensitivity; 2. when utilizing this fire detector when surveying, to require the spacing between the intelligent temperature detecting module 2 littler to small size burning things which may cause a fire disaster (for example the burning things which may cause a fire disaster diameter is less than 20 centimetres); 3. when the spacing between the intelligent temperature detecting module 2 is too small, upward the quantity of intelligent temperature detecting module 2 is too much can to cause every linear temperature sensor (length of GB regulation linear temperature sensor is not less than 200 meters or 150 meters at present) again, thereby the sensitivity of fire detector and reliability are reduced, cost raises, and alarm time and consistance variation.
The composite linear temperature-sensing fire disaster detector of prior art comprises two parallel bus-type linear temperature sensor and NTC analog linear temperature sensing elements in parallel that are provided with, and the boxcar that is connected above-mentioned two linear temperature sensor one ends simultaneously, wherein resistance signal pick-up unit in the boxcar and temperature signal pick-up unit carry out data acquisition to two linear temperature sensors respectively, and carry out fire alarm respectively and judge, but still can not solve the above-mentioned problem of mentioning.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of composite linear temperature-sensing fire disaster detector that can solve contradiction between sensitivity and reliability, the response speed well.
Another object of the present invention is to provide a kind of alarm method that utilizes above-mentioned composite linear temperature-sensing fire disaster detector.
In order to achieve the above object, composite linear temperature-sensing fire disaster detector provided by the invention comprises two parallel bus-type linear temperature sensor and NTC analog linear temperature sensing elements in parallel that are provided with, and the boxcar that is connected above-mentioned two linear temperature sensor one ends simultaneously; Wherein the bus-type linear temperature sensor comprises the many parallel leads that are provided with and is installed in parallel several intelligent temperature detecting modules between many leads; NTC analog linear temperature sensing element in parallel comprises two parallel detecting conductors that are provided with and the parallel NTC characteristic material barrier layer that is arranged between the detecting conductor; Boxcar is distinguished the electrical quantity on testbus molded lines type temperature sensing element and the NTC analog linear temperature sensing element in parallel, and it is carried out data fusion; Spacing Lj on the described bus-type linear temperature sensor between the intelligent temperature detecting module is greater than 1 meter, and simultaneously smaller or equal to Lmax rice, wherein Lmax is the maximal use length that is allowed when fire detector adopts NTC analog linear temperature sensing element separately under satisfying the prerequisite of GB.
Composite linear temperature-sensing fire disaster detector provided by the invention comprises two parallel bus-type linear temperature sensor and NTC analog linear temperature sensing elements in parallel that are provided with, and the boxcar that is connected above-mentioned two linear temperature sensor one ends simultaneously; Wherein the bus-type linear temperature sensor comprises the many parallel leads that are provided with and is installed in parallel several intelligent temperature detecting modules between many leads; NTC analog linear temperature sensing element in parallel comprises two parallel detecting conductors that are provided with and the parallel NTC characteristic material barrier layer that is arranged between the detecting conductor; Boxcar is distinguished the electrical quantity on testbus molded lines type temperature sensing element and the NTC analog linear temperature sensing element in parallel, and it is carried out data fusion; It is characterized in that: the spacing Lj on the described bus-type linear temperature sensor between the intelligent temperature detecting module is greater than 1 meter, and simultaneously smaller or equal to Lmax rice, wherein Lmax is the minimum length that is positioned at the heating cabinet linear temperature sensor in the test of being failure to actuate of stipulating in the GB.
Described NTC analog linear temperature sensing element in parallel can be replaced by the NTC characteristic linear temperature sensor in parallel with thermocouple characteristic.
The alarm method of composite linear temperature-sensing fire disaster detector provided by the invention is to carry out according to the following step order:
1) when bus-type linear temperature sensor and NTC analog linear temperature sensing element in parallel are heated, boxcar estimates fire detector according to the number of spots n that is heated on the bus-type linear temperature sensor and is heated stage of length;
2) stage of alarm threshold value on the NTC analog linear temperature sensing element in parallel is selected and set to boxcar according to the length of being heated that estimates in the step 1);
3) surpass step 2 when the electrical quantity that boxcar detects on the NTC analog linear temperature sensing element in parallel) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
The alarm method of composite linear temperature-sensing fire disaster detector provided by the invention is to carry out according to the following step order:
1) when bus-type linear temperature sensor and NTC analog linear temperature sensing element in parallel are heated, boxcar estimates the length of being heated of fire detector according to the number of spots n that is heated on the bus-type linear temperature sensor, and measures the stage that is subjected to hot(test)-spot temperature;
2) stage of alarm threshold value on the NTC analog linear temperature sensing element in parallel is selected and set to boxcar according to be heated length and the temperature that estimate in the step 1);
3) surpass step 2 when the electrical quantity that boxcar detects on the NTC analog linear temperature sensing element in parallel) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
The described number of spots of being heated be on the bus-type linear temperature sensor temperature greater than the quantity of the intelligent temperature detecting module of environment temperature.
Described basis is heated that number of spots estimates is heated length at (n-1) Lj～(n+1) choose between the Lj.
Composite linear temperature-sensing fire disaster detector provided by the invention and alarm method thereof are that the distribution density of intelligent temperature detecting module on it bus-type linear temperature sensor greater than 1 meter is set together with NTC analog linear temperature sensing element in parallel is parallel, detect electrical quantity on above-mentioned two linear temperature sensors respectively by detecting box, and this electrical quantity carried out data fusion and report a fire according to the data fusion result, thereby solved contradiction between sensitivity and reliability, the response speed effectively.
Description of drawings
Fig. 1 is a kind of bus-type digital quantity or analog linear temperature-sensing fire detecting device structural representation of prior art.
Fig. 2 is a composite linear temperature-sensing fire disaster detector structural representation provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments composite linear temperature-sensing fire disaster detector provided by the invention and alarm method thereof are elaborated.
Embodiment 1:
As shown in Figure 2, the composite linear temperature-sensing fire disaster detector that present embodiment provides comprises two parallel bus-type linear temperature sensor A and NTC analog linear temperature sensing element B in parallel that are provided with, and the boxcar 1 that is connected above-mentioned two linear temperature sensor one ends simultaneously; Wherein bus-type linear temperature sensor A comprises the many parallel leads 3 that are provided with and is installed in parallel several intelligent temperature detecting modules 2 between many leads 3; NTC analog linear temperature sensing element B in parallel comprises two parallel detecting conductors 4,5 that are provided with and the parallel NTC characteristic material barrier layer 6 that is arranged between the detecting conductor 4,5; Boxcar 1 is the electrical quantity (resistance, voltage, electromotive force etc.) on testbus molded lines type temperature sensing element A and the NTC analog linear temperature sensing element B in parallel respectively, and it is carried out data fusion; Spacing Lj between the last intelligent temperature detecting module 2 of described bus-type linear temperature sensor A is greater than 1 meter, and simultaneously smaller or equal to Lmax rice, wherein Lmax is the maximal use length that is allowed when fire detector adopts NTC analog linear temperature sensing element B separately under satisfying the prerequisite of GB, NTC analog linear temperature sensing element B just in parallel can satisfy the fire detector action when using separately, be failure to actuate, the maximum that performance requires under the variation of ambient temperature condition allows length, the heat-sensitive coefficients of this length and NTC characteristic material, the specified alarm temperature of fire detector, the differential temperature warning heating rate and the temperature of being failure to actuate, the factors such as heating rate of being failure to actuate are relevant, generally speaking between 10-50M.As spacing Lj during smaller or equal to Lmax, no matter test condition is (such as the length of being heated of linear temperature sensor in the heating cabinet in the action test under the programming rate of heating cabinet in the process of the test, the test of being failure to actuate, the variation of ambient temperature condition, factor such as power down whether in the process of the test) how to change, fire detector all can satisfy the GB requirement.
In addition, described Lmax is the minimum length that is positioned at the heating cabinet linear temperature sensor in the test of being failure to actuate of stipulating in the GB.This is because if only be in order to pass through the test under the actual conditions of GB defined, the upper limit of spacing Lj can also suitably be amplified, be that Lmax can be smaller or equal to the minimum of fire detector under the test condition of the being failure to actuate length of being heated, just should guaranteeing at least under the test condition of being failure to actuate that an intelligent temperature detecting module 2 is among the heating cabinet.
Described NTC analog linear temperature sensing element B in parallel can be replaced by the NTC characteristic linear temperature sensor in parallel with thermocouple characteristic.
The alarm method that utilizes above-mentioned composite linear temperature-sensing fire disaster detector is to carry out according to the following step order:
1) when bus-type linear temperature sensor A and NTC analog linear temperature sensing element B in parallel are heated, boxcar 1 estimates fire detector according to the number of spots n that is heated on the bus-type linear temperature sensor A and is heated stage of length;
2) stage that NTC analog linear temperature sensing element B in parallel goes up alarm threshold value is selected and set to boxcar 1 according to the length of being heated that estimates in the step 1);
3) surpass step 2 when the electrical quantity that boxcar 1 detects on the NTC analog linear temperature sensing element B in parallel) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
The described number of spots n that is heated is that bus-type linear temperature sensor A goes up the quantity of temperature greater than the intelligent temperature detecting module 2 of environment temperature.
Described basis is heated that number of spots n estimates is heated length at (n-1) Lj～(n+1) choose between the Lj, spacing Lj is more little, the length of being heated that estimates is accurate more, and this length of being heated can be determined by the designer voluntarily by theoretical analysis and experimental data way of combining, moves to satisfy fire detector, is failure to actuate, requirement such as performance is a prerequisite under the variation of ambient temperature condition.
In addition, in this alarm method NTC analog linear temperature sensing element B alarm threshold value in parallel determine carry out according to fire detector that performance test method under the variation of ambient temperature condition determines, can adopt theoretical analysis and experimental data way of combining to determine voluntarily, move to satisfy fire detector, be failure to actuate, the performance requirement is a precondition under the variation of ambient temperature condition by the designer.Concrete way is: 1, setting the length that is in linear temperature sensor in the heating cabinet 7 is the length of being heated that estimates in the step 1), and its temperature is the temperature of being failure to actuate of fire detector; 2, set and to be in that the length of being heated of linear temperature sensor is 1 meter in the heating cabinet 8, temperature is specified alarm temperature; 3, ignore or consider of the influence of heating cabinet external environment temperature the fire detector electrical quantity; 4, the resistance parameter of above-mentioned three segment length value in parallel is the alarm threshold value of fire detector.Said method can be determined the constant temperature alarm threshold value, also can determine the differential temperature alarm threshold value, only needs to change above-mentioned electrical quantity into its rate of change and gets final product.In addition.In order to estimate the length of being heated of fire detector, the hygrosensor in the intelligent temperature detecting module 2 or be temperature switch, or be sensor for measuring temperature.When being temperature switch, its operating temperature should be in the laboratory maximum environmental temperature and being failure to actuate of fire detector choose between the temperature.
Embodiment 2:
Composite linear temperature-sensing fire disaster detector structure among this embodiment is identical with a last embodiment, and its alarm method is to carry out according to the following step order:
1) when bus-type linear temperature sensor A and NTC analog linear temperature sensing element B in parallel are heated, boxcar 1 estimates the length of being heated of fire detector according to the number of spots n that is heated on the bus-type linear temperature sensor A, and measures the stage that is subjected to hot(test)-spot temperature;
2) stage that NTC analog linear temperature sensing element B in parallel goes up alarm threshold value is selected and set to boxcar 1 according to be heated length and the temperature that estimate in the step 1);
3) surpass step 2 when the electrical quantity that boxcar 1 detects on the NTC analog linear temperature sensing element B in parallel) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
In addition, in this alarm method NTC analog linear temperature sensing element B in parallel go up alarm threshold value determine carry out according to fire detector that performance test method under the variation of ambient temperature condition determines, can adopt theoretical analysis and experimental data way of combining to determine voluntarily, move to satisfy fire detector, be failure to actuate, the performance requirement is a precondition under the variation of ambient temperature condition by the designer.Concrete way is: 1, setting the length that is in linear temperature sensor in the heating cabinet 7 is the length of being heated that estimates in the step 1), and its temperature is the temperature that intelligent temperature detecting module 2 is measured; 2, set and to be in that the length of being heated of linear temperature sensor is 1 meter in the heating cabinet 8, temperature is specified alarm temperature; 3, ignore or consider of the influence of heating cabinet external environment temperature the fire detector electrical quantity; 4, the resistance parameter of above-mentioned three segment length value in parallel is the alarm threshold value of fire detector.Said method can be determined the constant temperature alarm threshold value, also can determine the differential temperature alarm threshold value, only needs to change above-mentioned electrical quantity into its rate of change and gets final product.
In addition, above-mentioned composite linear temperature-sensing fire disaster detector and alarm method thereof also are applicable to constant temperature, differential temperature or different constant temperature renewable type line-type heat detector.
Claims (9)
1, a kind of composite linear temperature-sensing fire disaster detector, comprise two parallel bus-type linear temperature sensor (A) and NTC analog linear temperature sensing elements in parallel (B) that are provided with, and the boxcar (1) that is connected above-mentioned two linear temperature sensor one ends simultaneously; Wherein bus-type linear temperature sensor (A) comprises the many parallel leads (3) that are provided with and is installed in parallel several intelligent temperature detecting modules (2) between many leads (3); NTC analog linear temperature sensing element in parallel (B) comprises two parallel detecting conductors (4,5) that are provided with and the parallel NTC characteristic material barrier layer (6) that is arranged between the detecting conductor (4,5); Boxcar (1) is distinguished the electrical quantity on testbus molded lines type temperature sensing element (A) and the NTC analog linear temperature sensing element in parallel (B), and it is carried out data fusion; It is characterized in that: the spacing Lj between the last intelligent temperature detecting module (2) of described bus-type linear temperature sensor (A) is greater than 1 meter, and simultaneously smaller or equal to Lmax rice, wherein Lmax is the maximal use length that is allowed when fire detector adopts NTC analog linear temperature sensing element (B) separately under satisfying the prerequisite of GB.
2, a kind of composite linear temperature-sensing fire disaster detector, comprise two parallel bus-type linear temperature sensor (A) and NTC analog linear temperature sensing elements in parallel (B) that are provided with, and the boxcar (1) that is connected above-mentioned two linear temperature sensor one ends simultaneously; Wherein bus-type linear temperature sensor (A) comprises the many parallel leads (3) that are provided with and is installed in parallel several intelligent temperature detecting modules (2) between many leads (3); NTC analog linear temperature sensing element in parallel (B) comprises two parallel detecting conductors (4,5) that are provided with and the parallel NTC characteristic material barrier layer (6) that is arranged between the detecting conductor (4,5); Boxcar (1) is distinguished the electrical quantity on testbus molded lines type temperature sensing element (A) and the NTC analog linear temperature sensing element in parallel (B), and it is carried out data fusion; It is characterized in that: the spacing Lj between the last intelligent temperature detecting module (2) of described bus-type linear temperature sensor (A) is greater than 1 meter, and simultaneously smaller or equal to Lmax rice, wherein Lmax is the minimum length that is positioned at the heating cabinet linear temperature sensor in the test of being failure to actuate of stipulating in the GB.
3, composite linear temperature-sensing fire disaster detector according to claim 2 is characterized in that: described NTC analog linear temperature sensing element in parallel (B) can be replaced by the NTC characteristic linear temperature sensor in parallel with thermocouple characteristic.
4, a kind of alarm method that utilizes the described composite linear temperature-sensing fire disaster detector of claim 1 is characterized in that: described alarm method is to carry out according to the following step order:
1) when bus-type linear temperature sensor (A) and NTC analog linear temperature sensing element in parallel (B) when being heated, boxcar (1) estimates fire detector according to the number of spots (n) of being heated on the bus-type linear temperature sensor (A) and is heated stage of length;
2) stage that NTC analog linear temperature sensing element in parallel (B) is gone up alarm threshold value is selected and set to boxcar (1) according to the length of being heated that estimates in the step 1);
3) surpass step 2 when the electrical quantity that boxcar (1) detects on the NTC analog linear temperature sensing element in parallel (B)) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
5, the alarm method of composite linear temperature-sensing fire disaster detector according to claim 4 is characterized in that: the described number of spots of being heated (n) goes up the quantity of temperature greater than the intelligent temperature detecting module (2) of environment temperature for bus-type linear temperature sensor (A).
6, the alarm method of composite linear temperature-sensing fire disaster detector according to claim 4 is characterized in that: described basis is heated that number of spots (n) estimates is heated length at (n-1) Lj～(n+1) choose between the Lj.
7, a kind of alarm method that utilizes the described composite linear temperature-sensing fire disaster detector of claim 1 is characterized in that: described alarm method is to carry out according to the following step order:
1) when bus-type linear temperature sensor (A) and NTC analog linear temperature sensing element in parallel (B) when being heated, boxcar (1) estimates the length of being heated of fire detector according to the number of spots (n) of being heated on the bus-type linear temperature sensor (A), and measures the stage that is subjected to hot(test)-spot temperature;
2) stage that NTC analog linear temperature sensing element in parallel (B) is gone up alarm threshold value is selected and set to boxcar (1) according to be heated length and the temperature that estimate in the step 1);
3) surpass step 2 when the electrical quantity that boxcar (1) detects on the NTC analog linear temperature sensing element in parallel (B)) in set alarm threshold value the time, the stage of sending the fire alarm signal immediately.
8, the alarm method of composite linear temperature-sensing fire disaster detector according to claim 7 is characterized in that: the described number of spots of being heated (n) goes up the quantity of temperature greater than the intelligent temperature detecting module (2) of environment temperature for bus-type linear temperature sensor (A).
9, the alarm method of composite linear temperature-sensing fire disaster detector according to claim 7 is characterized in that: described basis is heated that number of spots (n) estimates is heated length at (n-1) Lj～(n+1) choose between the Lj.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944264A (en) * | 2010-08-31 | 2011-01-12 | 曾学义 | Cable line type temperature-sensing fire detector |
| CN104376678A (en) * | 2014-12-09 | 2015-02-25 | 江苏中实电子有限公司 | Positioning type linear temperature sensing fire detector and alarm method thereof |
| CN106530578A (en) * | 2016-09-19 | 2017-03-22 | 上海波汇科技股份有限公司 | Threshold processing method for temperature-sensitive fire alarm system |
-
2008
- 2008-06-06 CN CN2008100534573A patent/CN101286262B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944264A (en) * | 2010-08-31 | 2011-01-12 | 曾学义 | Cable line type temperature-sensing fire detector |
| CN104376678A (en) * | 2014-12-09 | 2015-02-25 | 江苏中实电子有限公司 | Positioning type linear temperature sensing fire detector and alarm method thereof |
| CN106530578A (en) * | 2016-09-19 | 2017-03-22 | 上海波汇科技股份有限公司 | Threshold processing method for temperature-sensitive fire alarm system |
| CN106530578B (en) * | 2016-09-19 | 2018-11-20 | 上海波汇科技股份有限公司 | A kind of thresholding method of temperature sensing fire alarm system |
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