CN101656010B - Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof - Google Patents
Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof Download PDFInfo
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- CN101656010B CN101656010B CN2009101479370A CN200910147937A CN101656010B CN 101656010 B CN101656010 B CN 101656010B CN 2009101479370 A CN2009101479370 A CN 2009101479370A CN 200910147937 A CN200910147937 A CN 200910147937A CN 101656010 B CN101656010 B CN 101656010B
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Abstract
The invention discloses a linear temperature sensing fire detector with an electronic switch assembly and an alarming method thereof. The linear temperature sensing fire detector and the alarm method thereof can detect whether a linear temperature sensing element has a broken circuit or not by turning off the electronic switch assembly. Meanwhile, whether a fire alarming signal is sent or not is determined according to a condition whether an electrical parameter (or a sampling value) detected by a switching box exceeds an alarming threshold value or not when the electronic switch assembly is in an on state, thus the state of the linear temperature sensing element can be detected and judged at any time, and the problem of lower alarming reliability and sensitivity under the condition of an open circuit can also be eliminated.
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 line-type heat detector and alarm method thereof that has electronic switch assembly.
Background technology
Line-type heat detector with NTC (negative temperature coefficient) characteristic commonly used at present is a kind of broad-spectrum fire detector, it is mainly by the linear temperature sensor with NTC characteristic, be connected an end of 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 send the boxcar of fire alarm signal and be connected the other end of linear temperature sensor, and the terminal resistance that linear temperature sensor works the supervision effect of opening circuit is constituted according to the size of temperature or warning electrical quantity (or sampled value).Fig. 1 is linear temperature sensor transverse sectional view in the line-type heat detector with NTC characteristic of prior art.As shown in Figure 1, the linear temperature sensor of this prior art comprises two parallel detecting conductors that are provided with 1,2 and the parallel NTC characteristic barrier layer 3 that is arranged between the detecting conductor 1,2.Fig. 2 is the line-type heat detector schematic equivalent circuit with NTC characteristic of prior art.Horizontal line 1 expression detecting conductor 1 among the figure, horizontal line 2 expression detecting conductors 2, variable resistor R represents NTC characteristic barrier layer 3, R1 represents that terminal resistance 4,5 then represents boxcar.When linear temperature sensor on the detector is heated and temperature when raising, be positioned at two detecting conductors 1 on it, the resistance value R of the NTC characteristic barrier layer 3 between 2 will diminish, boxcar 5 can detect this variation immediately, in case boxcar 5 detects detecting conductor 1, sampled value between 2 (being electrical quantity) reaches the alarming threshold value (this value is corresponding to alarm temperature) that detector is set, and it will send fire alarm signal immediately; Under normal circumstances, if linear temperature sensor opens circuit or coming off appears in terminal resistance 4, boxcar 5 will send failure alarm signal immediately.But, there is following point in the line-type heat detector with NTC characteristic of this prior art: though when linear temperature sensor open circuit or terminal resistance 4 when occurring coming off boxcar 5 can send failure alarm signal, but under open circuit situation appears in linear temperature sensor, in case breaking out of fire, this moment, whether detector still determined whether to send fire alarm signal above the alarming threshold value of setting under the original non-open circuit situation according to the sampled value of linear temperature sensor, the heating temperature that will occur linear temperature sensor like this surpasses the situation of just reporting a fire behind the alarm temperature, thereby greatly reduces the warning reliability and the sensitivity of 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 judge the state of linear temperature sensor at any time, and can improve the line-type heat detector that has electronic switch assembly and the alarm method thereof of warning reliability and sensitivity.
In order to achieve the above object, the line-type heat detector that has electronic switch assembly provided by the invention comprises linear temperature sensor and is connected an end of linear temperature sensor, the boxcar that can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected; Wherein linear temperature sensor comprises two parallel detecting conductors that are provided with and the parallel NTC characteristic barrier layer that is arranged between the detecting conductor; The line-type heat detector of described charged sub-switch module also comprises the electronic switch assembly between two detecting conductors that are serially connected in the linear temperature sensor other end, and boxcar alternately detects the electrical quantity of linear temperature sensor when the electronic switch assembly open and close by the open and close of alternately controlling electronic switch assembly.
The line-type heat detector that has electronic switch assembly provided by the invention comprises linear temperature sensor and is connected an end of linear temperature sensor, the boxcar that can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected; Wherein linear temperature sensor comprises two parallel detecting conductors that are provided with and parallel NTC characteristic barrier layer and the fused insulating layers that are arranged between the detecting conductor, and at least one elastic conductor or memory alloy wire in the detecting conductor; The line-type heat detector of described charged sub-switch module also comprises the electronic switch assembly between two detecting conductors that are serially connected in the linear temperature sensor other end, and boxcar alternately detects the electrical quantity of linear temperature sensor when the electronic switch assembly open and close by the open and close of alternately controlling electronic switch assembly.
One in described two detecting conductors is thermocouple wire.
Described electronic switch assembly is the relay-type switch module, and the control mode that opens and closes of relay is controlled in wireless mode or wired control mode.
Described electronic switch assembly is the diode-type switch module, and the control mode that opens and closes of diode is controlled by the electric power polarity conversion that is added in the diode two ends.
Described electronic switch assembly is a voltage stabilizing diode type switch module, and the control mode that opens and closes of voltage stabilizing diode is controlled by the supply voltage size that is added in the voltage stabilizing diode two ends.
Described electronic switch assembly is the triode type switch module, and the control mode that opens and closes of triode is controlled by the voltage swing that is added in transistor base.
The alarm method that has the line-type heat detector of electronic switch assembly provided by the invention comprises the following step that carries out in order:
1) alternately controls the unlatching of electronic switch assembly with closed by boxcar;
2) when electronic switch assembly is in closure state, boxcar detects the resistance value of linear temperature sensor, when measure resistance greater than the line body resistance of detecting conductor and resistance value the time, detector sends failure alarm signal;
3) when electronic switch assembly is in opening, boxcar detects the resistance value of linear temperature sensor, and when the measurement resistance surpassed the alarming threshold value of setting under the open circuit situation, detector sent the fire alarm signal.
Whether line-type heat detector that has an electronic switch assembly provided by the invention and alarm method thereof can utilize the closure of electronic switch assembly to detect linear temperature sensor to occur opening circuit, whether the electrical quantity (or sampled value) that detects according to boxcar under the electronic switch assembly opening determines whether to send fire alarm signal above alarming threshold value simultaneously, like this not only can be at any time the state of linear temperature sensor be detected and judges, but also can eliminate warning reliability and the lower problem of sensitivity that occurs under the open circuit situation.
Description of drawings
Fig. 1 is linear temperature sensor transverse sectional view in the line-type heat detector with NTC characteristic of prior art.
Fig. 2 is the line-type heat detector schematic equivalent circuit with NTC characteristic of prior art.
Fig. 3 is the employed line-type heat detector one example structure synoptic diagram that has electronic switch assembly in the alarm method provided by the invention.
Fig. 4 is employed another example structure synoptic diagram of line-type heat detector that has electronic switch assembly in the alarm method provided by the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments line-type heat detector and the alarm method thereof that has electronic switch assembly provided by the invention is elaborated.The parts identical with prior art adopt identical drawing reference numeral.
Embodiment 1:
As shown in Figure 3, the line-type heat detector that has electronic switch assembly that present embodiment provides comprises linear temperature sensor, is connected an end of linear temperature sensor, boxcar 5 that can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected and the electronic switch assembly 8 that is connected the linear temperature sensor other end; Wherein linear temperature sensor comprises two parallel detecting conductors 1 that are provided with, 2 and the parallel detecting conductor 1 that is arranged on, NTC characteristic barrier layer 3 between 2, electronic switch assembly 8 then are serially connected between two detecting conductors 1,2 of the linear temperature sensor other end.
Adopt the above-mentioned alarm method that has the line-type heat detector of electronic switch assembly to comprise the following step that carries out in order:
1) unlatching of alternately controlling electronic switch assembly 8 by boxcar 5 is with closed, and promptly the output contact of electronic switch assembly 8 alternately is in and opens and closure state, and the time of opening with closure can freely be provided with;
2) when electronic switch assembly 8 is in closure state, boxcar 5 detects the resistance value of linear temperature sensors, when measure resistance when excessive (greater than the line body resistance of detecting conductor 1,2 and resistance value), detector sends failure alarm signal;
3) when electronic switch assembly 8 is in opening, boxcar 5 detects the resistance value of linear temperature sensor, and when the measurement resistance surpassed the alarming threshold value of setting under the open circuit situation, detector sent the fire alarm signal.
Embodiment 2:
As shown in Figure 4, the line-type heat detector that has electronic switch assembly that present embodiment provides comprises linear temperature sensor, is connected an end of linear temperature sensor, boxcar 5 that can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected and the electronic switch assembly 8 that is connected the linear temperature sensor other end; Wherein linear temperature sensor comprises two parallel detecting conductors that are provided with 1,2 and parallel NTC characteristic barrier layer 3 and the fused insulating layers 7 that are arranged between the detecting conductor 1,2, and in the detecting conductor 1,2 at least one be elastic conductor or memory alloy wire.The line-type heat detector that has electronic switch assembly that present embodiment provides is except that the structure of linear temperature sensor is different with a last embodiment, and other structure and warning principle of work are identical with a last embodiment.
Embodiment 3:
Present embodiment is with detecting conductor 1 on the linear temperature sensor among embodiment 1 and the embodiment 2, one in 2 is adopted the thermocouple wire material to make, constitute interim thermopair with another root, thereby form the linear temperature sensor with thermocouple characteristic, other structure and principle of work are then identical with above-mentioned two embodiment.
Described electronic switch assembly 8 can be following several mode, but is not limited thereto:
1) relay-type switch module, the control mode that opens and closes of relay can be controlled in wireless mode or wired control mode;
2) diode-type switch module, 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 module, 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 module, 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 assembly 8 can also cause boxcar 5 and is set together with boxcar 5 by lead.
Claims (8)
1. line-type heat detector that has electronic switch assembly, it comprises linear temperature sensor and is connected an end of linear temperature sensor, the boxcar (5) that can be in real time the temperature or the warning electrical quantity of linear temperature sensor be detected; Wherein linear temperature sensor comprises two parallel detecting conductors (1,2) that are provided with and the parallel NTC characteristic barrier layer (3) that is arranged between the detecting conductor (1,2); It is characterized in that: the line-type heat detector of described charged sub-switch module also comprises two detecting conductors (1 that are serially connected in the linear temperature sensor other end, 2) electronic switch assembly between (8), boxcar (5) alternately detects the electrical quantity of linear temperature sensor when electronic switch assembly (8) open and close by the open and close of alternately controlling electronic switch assembly (8).
2. line-type heat detector that has electronic switch assembly, it comprises linear temperature sensor and is connected an end of linear temperature sensor, the boxcar (5) that can be in real time the temperature or the warning electrical quantity of linear temperature sensor be detected; Wherein linear temperature sensor comprises two parallel detecting conductors (1 that are provided with, 2) and the parallel detecting conductor (1 that is arranged on, 2) NTC characteristic barrier layer (3) between and fused insulating layer (7), and in the detecting conductor (1,2) at least one be elastic conductor or memory alloy wire; It is characterized in that: the line-type heat detector of described charged sub-switch module also comprises two detecting conductors (1 that are serially connected in the linear temperature sensor other end, 2) electronic switch assembly between (8), boxcar (5) alternately detects the electrical quantity of linear temperature sensor when electronic switch assembly (8) open and close by the open and close of alternately controlling electronic switch assembly (8).
3. the line-type heat detector that has electronic switch assembly according to claim 1 and 2 is characterized in that: one in described two detecting conductors (1,2) is thermocouple wire.
4. according to claim 1, one of the 2 described line-type heat detectors that have electronic switch assembly, it is characterized in that: described electronic switch assembly (8) is the relay-type switch module, and the control mode that opens and closes of relay is controlled in wireless mode or wired control mode.
5. according to claim 1, one of the 2 described line-type heat detectors that have electronic switch assembly, it is characterized in that: described electronic switch assembly (8) is the diode-type switch module, and the control mode that opens and closes of diode is controlled by the electric power polarity conversion that is added in the diode two ends.
6. according to claim 1, one of the 2 described line-type heat detectors that have electronic switch assembly, it is characterized in that: described electronic switch assembly (8) is a voltage stabilizing diode type switch module, and the control mode that opens and closes of voltage stabilizing diode is controlled by the supply voltage size that is added in the voltage stabilizing diode two ends.
7. according to claim 1, one of the 2 described line-type heat detectors that have electronic switch assembly, it is characterized in that: described electronic switch assembly (8) is the triode type switch module, and the control mode that opens and closes of triode is controlled by the voltage swing that is added in transistor base.
8. one kind is adopted claim 1, one of the 2 described alarm methods that have the line-type heat detector of electronic switch assembly, and it is characterized in that: the described alarm method that has the line-type heat detector of electronic switch assembly comprises the following step that carries out in order:
1) alternately controls the unlatching of electronic switch assembly (8) with closed by boxcar (5);
2) when electronic switch assembly (8) when being in closure state, boxcar (5) detects the resistance value of linear temperature sensor, when measure resistance greater than the line body resistance of detecting conductor (1,2) and resistance value the time, detector sends failure alarm signal;
3) when electronic switch assembly (8) when being in opening, boxcar (5) detects the resistance value of linear temperature sensor, and when measuring resistance and surpass the alarming threshold value of setting under the open circuit situation, detector sends the fire alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101479370A CN101656010B (en) | 2007-07-23 | 2007-07-23 | Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101479370A CN101656010B (en) | 2007-07-23 | 2007-07-23 | Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100583607A Division CN101123026B (en) | 2007-07-23 | 2007-07-23 | A linear temperature susceptibility fire detector with electronic switch component |
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| CN101656010A CN101656010A (en) | 2010-02-24 |
| CN101656010B true CN101656010B (en) | 2011-01-12 |
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| CN108553785B (en) * | 2017-12-08 | 2020-04-21 | 张卫社 | On-off type burst early warning detection cable and detector |
| CN108211191B (en) * | 2017-12-08 | 2020-04-21 | 张卫社 | On-off type burst early warning detection cable and detector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709960Y (en) * | 2004-05-19 | 2005-07-13 | 首安工业消防股份有限公司 | Analogue line measuring cable probe with automatic heating and detecting function |
| US6958463B1 (en) * | 2004-04-23 | 2005-10-25 | Thermosoft International Corporation | Heater with simultaneous hot spot and mechanical intrusion protection |
| CN1949284A (en) * | 2006-11-02 | 2007-04-18 | 张卫社 | Linear temp. sensing detector based on thermocouple principle |
| CN1987945A (en) * | 2006-12-20 | 2007-06-27 | 张卫社 | Short circuit warning method for non-recoverable linear temperature sensing detector |
-
2007
- 2007-07-23 CN CN2009101479370A patent/CN101656010B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958463B1 (en) * | 2004-04-23 | 2005-10-25 | Thermosoft International Corporation | Heater with simultaneous hot spot and mechanical intrusion protection |
| CN2709960Y (en) * | 2004-05-19 | 2005-07-13 | 首安工业消防股份有限公司 | Analogue line measuring cable probe with automatic heating and detecting function |
| CN1949284A (en) * | 2006-11-02 | 2007-04-18 | 张卫社 | Linear temp. sensing detector based on thermocouple principle |
| CN1987945A (en) * | 2006-12-20 | 2007-06-27 | 张卫社 | Short circuit warning method for non-recoverable linear temperature sensing detector |
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Effective date of registration: 20100712 Address after: 101304 Beijing Airport South Industrial Zone Banbidian Lee Road No. 22 Applicant after: Sureland Industry Fire-Fighting Co., Ltd. Address before: The construction of the road in the middle 300380 Tianjin Yangliuqing town, Xiqing District No. 55 Applicant before: Zhang Weishe Co-applicant before: Li Gangjin |
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Denomination of invention: Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof Effective date of registration: 20121010 Granted publication date: 20110112 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industry Fire-Fighting Co., Ltd. Registration number: 2012990000591 |
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Date of cancellation: 20171114 Granted publication date: 20110112 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industry Fire-Fighting Co., Ltd. Registration number: 2012990000591 |