CN100492428C - Non-recoverable linear temperature sensing detector breaking alarming method - Google Patents
Non-recoverable linear temperature sensing detector breaking alarming method Download PDFInfo
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- CN100492428C CN100492428C CNB2007100568240A CN200710056824A CN100492428C CN 100492428 C CN100492428 C CN 100492428C CN B2007100568240 A CNB2007100568240 A CN B2007100568240A CN 200710056824 A CN200710056824 A CN 200710056824A CN 100492428 C CN100492428 C CN 100492428C
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 41
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 238000002955 isolation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
This invention discloses one in-restorable linear temperature detector and its shortcut alarm method, which comprises linear temperature detect element and its switch case and terminal resistance on both ends of the detection parts, wherein, the linear temperature sensor element is composed of two pieces of detection conductors and NTC isolation layer in between with at least one conductor is easy to be fused wires. This invention provides the method can send different alarm signals according to the shortcut fault or break fire.
Description
Technical field
The present invention relates to a kind of breaking alarming method of line-type heat detector, particularly relate to a kind of breaking alarming method of irrecoverable linear temperature-sensitive detector.
Background technology
Line-type heat detector is a kind of present widely used fire detector, usually by linear temperature sensor and be connected an end of linear temperature sensor, can detect the warning electrical quantity (or sampled value) on the linear temperature sensor in real time, and according to the size of warning electrical quantity (or sampled value) or the boxcar composition of rate of change output fire alarm signal, a terminal resistance that can work the supervision effect of opening circuit under the detector normal condition can be opened a way or connect to the other end of linear temperature sensor, and be divided into two kinds of recovery formula and beyond retrievables according to the structure difference of linear temperature sensor.Fig. 1 is the irrecoverable linear temperature-sensitive detector vertical structure synoptic diagram of prior art.As shown in Figure 1, the irrecoverable linear temperature-sensitive detector of this prior art comprises linear temperature sensor, terminal resistance 5 and boxcar 4, wherein linear temperature sensor is by two parallel detecting conductors 1 that are provided with, 2 and the parallel detecting conductor 1 that is arranged on, insulation course 3 between 2 is formed, and detecting conductor 1 is the conductor silk that easily fuses; One end of two detecting conductors 1,2 is electrically connected with the input end of boxcar 4 respectively, then is in series with terminal resistance 5 between the other end.In-20 ℃～45 ℃ conventional temperature range, the detecting conductor of being made by easy fusing conductor silk 1 is a continuous conductor, forms turning circuit between itself and detecting conductor 2 and the terminal resistance 5.When this linear temperature sensor local heating and when reaching the fusing-off temperature of easy fusing conductor silk, the easy fusing conductor silk of inside, heated part will begin to melt, under its surface tension effects, detecting conductor 1,2 and terminal resistance 5 between the circuit that forms forever cut off, this moment, boxcar 4 can detect circuit generation " opening circuit " situation that forms between detecting conductor 1,2 and the terminal resistance 5 immediately, thereby sent the fire alarm signal rapidly.The alarm method of this irrecoverable linear temperature-sensitive detector is that boxcar 4 detects the state of linear temperature sensor in real time, occur " opening circuit " state on the linear temperature sensor in case detect, boxcar 4 sends the fire alarm signal that opens circuit immediately.But, there is following point in the breaking alarming method of this irrecoverable linear temperature-sensitive detector: in the installation and use of linear temperature sensor, in case it is subjected to excessive mechanical pulling force effect, open circuit fault will appear in detecting conductor 1, but this moment, boxcar 4 can not send the open circuit fault alerting signal, and can only send the fire alarm signal that opens circuit, will cause false alarm like this, so reliability is relatively poor.
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 send different alarm respectively according to the open circuit fault and the two kinds of situations of fire that open circuit, thereby the breaking alarming method of the higher irrecoverable linear temperature-sensitive detector of reliability.
In order to achieve the above object, irrecoverable linear temperature-sensitive detector comprises linear temperature sensor and is connected to the boxcar and the terminal resistance at linear temperature sensor two ends in the breaking alarming method of irrecoverable linear temperature-sensitive detector provided by the invention, wherein linear temperature sensor is made of two parallel detecting conductors that are provided with and the parallel NTC characteristic barrier layer that is arranged between the detecting conductor, and at least one detecting conductor is easy fusing conductor silk; The breaking alarming method of described irrecoverable linear temperature-sensitive detector comprises the following step that carries out in order:
(1) boxcar detects state and the resistance value between the detecting conductor, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change of linear temperature sensor in real time, simultaneously the stage that these electrical quantitys are stored;
(2) when detecting linear temperature sensor, boxcar is in " opening circuit " state, the a certain moment stored in a period of time before it will open circuit resistance value, resistance change rate, magnitude of voltage or magnitude of voltage rate of change compare with corresponding alarming threshold value respectively, if it is some or do not exceed simultaneously corresponding alarming threshold value in the above-mentioned storing value, send the open circuit fault alerting signal, if and some or exceed corresponding alarming threshold value simultaneously in the above-mentioned storing value, send the stage of the fire alarm signal that opens circuit.
The time period that boxcar is sampled to the electrical quantity of linear temperature sensor before opening circuit in the described step 2 is 0.1～100 second.
The breaking alarming method of irrecoverable linear temperature-sensitive detector provided by the invention can send different alerting signals respectively according to the open circuit fault or the two kinds of situations of fire that open circuit, therefore the false alarm problem that the open circuit fault because of linear temperature sensor causes can be prevented under the normal temperature, thereby the fire alarm reliability of this detector can be improved.
Description of drawings
Fig. 1 is the beyond retrievable heat detector vertical structure synoptic diagram of prior art.
Fig. 2 is an irrecoverable linear temperature-sensitive detector vertical structure synoptic diagram provided by the invention.
Embodiment
Be elaborated below in conjunction with the breaking alarming method of the drawings and specific embodiments to irrecoverable linear temperature-sensitive detector provided by the invention.
Embodiment 1:
As shown in Figure 2, irrecoverable linear temperature-sensitive detector provided by the invention comprises linear temperature sensor and is connected to the terminal resistance 16 and the boxcar 18 at linear temperature sensor two ends; Wherein linear temperature sensor is made up of two parallel detecting conductors that are provided with 10,11 and the parallel NTC characteristic barrier layer 15 that is arranged between the detecting conductor 10,11; Can adopt parallel, winding or coaxial manner setting between the detecting conductor 10,11.In addition, in the detecting conductor 10,11 at least one be easy fusing conductor silk.The resistance value scope of terminal resistance 16 is 1K Ω～20M Ω.Boxcar 18 detects and stores resistance value between the detecting conductor 10,11 or resistance change rate all the time.In addition, the linear temperature sensor outside can also be provided with an oversheath.
Embodiment 2:
Present embodiment is the improvement on embodiment 1 basis: one that is about in the detecting conductor 10,11 replaces with thermocouple wire, thereby the detecting conductor of being made by easy fusing conductor silk with another root constitutes the linear temperature sensor with thermocouple characteristic, boxcar 18 is used for detecting in real time the size of the state of linear temperature sensor and voltage (electromotive force) value, magnitude of voltage rate of change, and other structure is constant.
When the linear temperature sensor in the irrecoverable linear temperature-sensitive detector provided by the invention is heated and reaches uniform temperature, the temperature of the detecting conductor of being made by easy fusing conductor silk in the linear temperature sensor of heated part will rise thereupon, when temperature reaches its fusing-off temperature, it will begin to melt, under its surface tension effects, by detecting conductor 10,11 and the circuit that constitutes of terminal resistance 16 forever cut off, promptly occur opening circuit, boxcar 18 can detect linear temperature sensor immediately and be in " opening circuit " state.In this process, boxcar 18 also must detect detecting conductor 10 earlier, resistance value between 11, the resistance change rate, the temperature variant amount of magnitude of voltage or voltage change ratio, at this moment, boxcar 18 will be to the resistance value of a certain above-mentioned storage of the moment in 0.1～100s before opening circuit, the resistance change rate, magnitude of voltage, whether the magnitude of voltage rate of change reaches corresponding alarming threshold value is judged that (these alarming threshold values are empirical value or obtain by experiment, linear temperature sensor is under residing Normal Environmental Temperature, its electrical quantity does not exceed alarming threshold value all the time, and carrying out one meter when being subjected to heat test, when temperature reaches the fire alarm temperature, its resistance value, the resistance change rate, magnitude of voltage, the magnitude of voltage rate of change will exceed corresponding alarming threshold value), if some or simultaneously do not exceed corresponding alarming threshold value in the above-mentioned storing value, it will send " opening circuit " failure alarm signal; And if some or exceed corresponding alarming threshold value simultaneously in the above-mentioned storing value, show that fire really takes place, it will send immediately and open circuit fire alarm signal and carry out fire alarm, thereby reach the purpose of fire alarm.
And when the linear temperature sensor in the irrecoverable linear temperature-sensitive detector provided by the invention made the detecting conductor of being made by easy fusing conductor silk occur opening circuit because of the effect that is subjected to mechanical pulling force, boxcar 18 can detect linear temperature sensor immediately and be in " opening circuit " state.But because the resistance value of " opening circuit " preceding linear temperature sensor of boxcar 18 storage inside, resistance change rate, magnitude of voltage or the variation of magnitude of voltage rate of change are less, this moment, 18 of boxcars sent " opening circuit " failure alarm signal.
Claims (2)
1, a kind of breaking alarming method of irrecoverable linear temperature-sensitive detector, wherein irrecoverable linear temperature-sensitive detector comprises linear temperature sensor and is connected to the boxcar and the terminal resistance at linear temperature sensor two ends, described linear temperature sensor is made of two parallel detecting conductors that are provided with and the parallel NTC characteristic barrier layer that is arranged between the detecting conductor, and at least one detecting conductor is easy fusing conductor silk; It is characterized in that: the breaking alarming method of described irrecoverable linear temperature-sensitive detector comprises the following step that carries out in order:
(1) boxcar detects state and the resistance value between the detecting conductor, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change of linear temperature sensor in real time, simultaneously the stage that these electrical quantitys are stored;
(2) when detecting linear temperature sensor, boxcar is in " opening circuit " state, the a certain moment stored in a period of time before it will open circuit resistance value, resistance change rate, magnitude of voltage or magnitude of voltage rate of change compare with corresponding alarming threshold value respectively, if it is some or do not exceed simultaneously corresponding alarming threshold value in the above-mentioned storing value, send the open circuit fault alerting signal, if and some or exceed corresponding alarming threshold value simultaneously in the above-mentioned storing value, send the stage of the fire alarm signal that opens circuit.
2, the breaking alarming method of irrecoverable linear temperature-sensitive detector according to claim 1 is characterized in that: the time period that boxcar is sampled to the electrical quantity of linear temperature sensor before opening circuit in the described step 2 is 0.1～100 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100568240A CN100492428C (en) | 2007-02-14 | 2007-02-14 | Non-recoverable linear temperature sensing detector breaking alarming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100568240A CN100492428C (en) | 2007-02-14 | 2007-02-14 | Non-recoverable linear temperature sensing detector breaking alarming method |
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| Publication Number | Publication Date |
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| CN101017595A CN101017595A (en) | 2007-08-15 |
| CN100492428C true CN100492428C (en) | 2009-05-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI689712B (en) * | 2018-01-04 | 2020-04-01 | 聯發科技股份有限公司 | Thermal sensor integrated circuit and resistor used in thermal sensor |
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2007
- 2007-02-14 CN CNB2007100568240A patent/CN100492428C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI689712B (en) * | 2018-01-04 | 2020-04-01 | 聯發科技股份有限公司 | Thermal sensor integrated circuit and resistor used in thermal sensor |
| US11467041B2 (en) | 2018-01-04 | 2022-10-11 | Mediatek Inc. | Thermal sensor integrated circuit, resistor used in thermal sensor and method for detecting temperature |
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| CN101017595A (en) | 2007-08-15 |
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Owner name: SHOU AN INDUSTRY FIRE LTD. Free format text: FORMER OWNER: ZHANG WEISHE; APPLICANT Effective date: 20080627 |
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Effective date of registration: 20080627 Address after: Beijing City, the Capital Airport South Industrial Zone Banbidian Road No. 22 Lee post encoding: 101304 Applicant after: Sureland Industry Fire-Fighting Co., Ltd. Address before: The construction of the road in the middle of Xiqing Yangliuqing town, Tianjin District 55 post encoding: 300380 Applicant before: Zhang Wei Co-applicant before: Li Gangjin |
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Denomination of invention: Non-recoverable linear temperature sensing detector breaking alarming method Effective date of registration: 20121010 Granted publication date: 20090527 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: 20090527 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industry Fire-Fighting Co., Ltd. Registration number: 2012990000591 |