CN101226670B - Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector - Google Patents
Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector Download PDFInfo
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- CN101226670B CN101226670B CN2008100103197A CN200810010319A CN101226670B CN 101226670 B CN101226670 B CN 101226670B CN 2008100103197 A CN2008100103197 A CN 2008100103197A CN 200810010319 A CN200810010319 A CN 200810010319A CN 101226670 B CN101226670 B CN 101226670B
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Abstract
The invention provides a method for alarming and short circuit fault of an unrecoverable type cable line-type temperature-sensing fire detector. Both ends of a temperature-sensing cable are respectively connected with a signal processor unit and a terminal resistance R to form a closed-circuit signal acquisition circuit, realizing multilevel fixed temperature alarm, differential temperature alarm, differential and fixed temperature alarm, short circuit fault output, open circuit fault output and disconnection fault output of a resistive signal processing unit. The invention has the remarkable advantages that before the signal processor unit judges the short circuit fault the temperature-sensing cable, a fire alarm signal can be confirmed whether be sent or not, through the judgment of electrical signal changes or the variation or change rate is larger than one set threshold, a plurality of fire alarm signals can be sent out according to a plurality of set alarm thresholds and fire alarm signal of short circuit, alarm signal of short circuit fault, alarm signal of open circuit fault and alarm signal of disconnection fault of the signal processor unit can be sent, and differential or differential and fixed temperature fire alarm signal can be confirmed to or not to be sent according to the change rate of the electrical signal.
Description
Technical field
The present invention relates to fire alarm installation, a kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble and warning method.
Technical background
A kind of irrecoverable linear temperature-sensitive detector of the prior art with the short trouble warning, application number ZL 200620133478.2 sees Fig. 1: this detector comprises the detection cable, resistance, with the resistance signal measurement mechanism, the detection cable comprises, two detecting conductors 4,5 are arranged on two semiconductor material layer 7 and fused insulating layers 6 between the detecting conductor.Infinitely great between 4,5 resistances of two detecting conductors under the normal condition, when 6 fusings of temperature rising fused insulating layer, detecting conductor 4 is reported a fire with semiconductor material layer 7 short circuits, when be heated or the external force effect under two detecting conductors, 4,5 short circuit Times short troubles.
Above-mentioned a kind of irrecoverable linear temperature-sensitive detector of reporting to the police with short trouble in use because of detector can only be exported the one-level fire alarm, is being subjected under the external force situation wrong report that also is short-circuited easily of detecting conductor 4 and semiconductor material layer 7.So, need to propose a kind of new beyond retrievable double-temperature alarm short-circuit, open circuit fault output line-type heat detector, to improve line-type heat detector reliability in use.
Summary of the invention
The purpose of this invention is to provide a kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble and alarm method, be connected to form the closed circuit signaling Acquisition Circuit with signal processing apparatus and terminal resistance R respectively by the temperature sensing cable two ends, realize that multistage constant temperature is reported to the police, differential temperature is reported to the police, different constant temperature is reported to the police, short trouble is exported, open circuit fault is exported, the output of resistance signal treating apparatus disconnection fault.
A kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble and alarm method comprise step in the following order:
(1) signal processing apparatus is powering on the starting stage, and whether the electric signal that detects temperature sensing cable at the appointed time in the section in specialized range, is the A stage that then enters the normal monitoring duty; Otherwise send short circuit or open circuit fault alerting signal.
(2) signal processing apparatus judges whether the electric signal that detects temperature sensing cable in the section at the appointed time changes, and is then to enter the B stage.In the B stage, if signal processing apparatus sent constant temperature or differential temperature fire alarm signal when the variable quantity of electric signal or rate of change were set alarming threshold value greater than one, whether be short-circuited at B stage temperature sensing cable, be that then signal processing apparatus sends the short circuit and fire hazard alerting signal, otherwise enter the A stage of normal monitoring duty;
Whether the resistance of temperature sensing cable is infinitely great, is that then signal processing apparatus sends the open circuit fault alerting signal, otherwise enters the A stage of normal monitoring duty;
Whether temperature sensing cable is short-circuited, and is that then signal processing apparatus sends the short trouble alerting signal, otherwise enters the A stage of normal monitoring duty.
Temperature sensing cable sends constant temperature or differential temperature fire alarm signal part in the B stage in the above-mentioned steps, and temperature sensing cable is reusable.
The outstanding advantage of a kind of beyond-retrieve-type cable-type line-type heat detector short trouble of the present invention and alarm method is: signal processing apparatus judges that temperature sensing cable is before short circuit, can can confirm whether send differential temperature or different constant temperature fire alarm signal according to the change in electric rate by judging that electric signal changes or variable quantity or rate of change are set threshold values greater than one and confirmed whether send fire alarm signal and send short circuit and fire hazard alerting signal, short trouble alerting signal, open circuit fault alerting signal.
Description of drawings
Fig. 1 is a kind of irrecoverable line-type heat detector synoptic diagram with short circuit newspaper fault of prior art.
Fig. 2 is a kind of beyond-retrieve-type cable-type line-type heat panel detector structure of the present invention synoptic diagram.
Fig. 3 is a temperature sensing cable diagrammatic cross-section in a kind of beyond-retrieve-type cable-type line-type heat detector of the present invention.
Embodiment
A kind of beyond-retrieve-type cable-type line-type heat detector short trouble and alarm method, see Fig. 2, Fig. 4: comprise that the temperature sensing cable two ends are connected with terminal resistance R with signal processing apparatus 14 respectively, the terminal resistance resistance is preferred at 50 Ω～50M Ω, form the closed circuit signaling Acquisition Circuit, the structure that it is characterized in that temperature sensing cable, be to be that 0.1mm～2mm width 1mm～3mm Vicat softening point is that 40 ℃～180 ℃ fusible maybe can be melted insulating material barrier layer 12 by a banded thickness is set between two elastic metallic conductors 11, it is stranded or be intertwined that one shoestring barrier layer 12 is set between two elastic metallic conductors 11, it is stranded or the winding pitch is preferred between 20mm～200mm, outer extrusion molding or wrapped one deck NTC or CTR characteristic external sheath layer 13 are made temperature sensing cable.In two elastic metallic conductors 11 one coats or two coat respectively and fusiblely maybe can melt insulating material barrier layer 12, stranded again or be intertwined, stranded or be intertwined after the fusible coating that maybe can melt insulating material beyond removing between two elastic metallic conductors 11, the method of removing can be to lancinate, expose two elastic metallic conductors, 11 outer extrusion molding or wrapped one deck NTC or CTR characteristic external sheath layers 13 again, make temperature sensing cable.
A kind of beyond-retrieve-type cable-type line-type heat detector short trouble and alarm method comprise step in the following order:
(1) signal processing apparatus 14 is powering on the starting stage, and whether the electric signal that detects temperature sensing cable at the appointed time in the section in specialized range, is the A stage that then enters the normal monitoring duty; Otherwise send short circuit, open circuit fault alerting signal.
(2) in A stage of normal monitoring duty, because two elastic metallic conductors, 11 outer one deck NTC or the CTR characteristic external sheath layers 13 of coating after stranded or the winding, when the be heated clad NTC or the CTR characteristic material resistance of two elastic metallic conductors 11 of temperature sensing cable reduces, signal processing apparatus 14 is judged at the appointed time in the section, as whether the electric signal that detects two elastic metallic conductors 11 of temperature sensing cable change or variable quantity or rate of change, then enters the B stage.In the B stage, if electric signal changes, signal processing apparatus 14 sent constant temperature or differential temperature fire alarm signal when variable quantity or rate of change were set alarming threshold value greater than one, in the B stage, whether two elastic metallic conductors 11 of temperature sensing cable open circuit, be that then signal processing apparatus 14 sends the short circuit and fire hazard alerting signal, otherwise enter the A stage of normal monitoring duty;
In the A stage, whether infinitely great if signal processing apparatus 14 detects two elastic metallic conductor 11 resistances of temperature sensing cable, be that then signal processing apparatus 14 sends the open circuit fault alerting signal, otherwise enter the A stage of normal monitoring duty;
In the A stage,, be that then signal processing apparatus sends the short trouble alerting signal, otherwise enter the A stage of normal monitoring duty if whether two elastic metallic conductors 11 that signal processing apparatus 14 detects temperature sensing cable are short-circuited.
Temperature sensing cable sends fire alarm signal in the A stage in the above-mentioned steps, and in the B stage that is not short-circuited on the temperature sensing cable, temperature sensing cable is reusable.
Described stipulated time section is 1～1000s, and described electric signal can be resistance, electric capacity, inductance, voltage, electric current, thermoelectrical potential, frequency signal.
Material behavior explanation of the present invention:
1. fusiblely maybe can melt insulation material layer: Vicat softening point is 40 ℃～180 ℃, and specific insulation (coefficient) is 10
10～10
20All plastics of Ω cm, elastomeric material, or above-mentioned material has NTC, CTR, ptc characteristics.
2. elastic metallic conductor: specification is selected for use between Φ 0.2mm～3.0mm.
Material can be selected the alloy material of steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel, memorial alloy line and above-mentioned material for use, wire external layer or zinc-plated, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating.Because of metal wire rod has certain intensity and elasticity after being subjected to stretch, extending or being heated, so be called the elastic metallic conductor.
3.NTC or CTR characteristic material external sheath layer: selecting the performance of material is that specific volume resistance is 10
-2～10
15The material that all plastics, rubber are made with NTC, CTR characteristic.
Claims (4)
1. beyond-retrieve-type cable-type line-type heat fire detector short trouble and alarm method, described linear temperature-sensing fire detecting is connected to form the closed circuit signaling Acquisition Circuit with signal processing apparatus (14) and terminal resistance R respectively by the temperature sensing cable two ends to be formed, and it is characterized in that: describedly be used for the beyond-retrieve-type cable-type line-type heat fire detector short trouble and alarm method comprises the following step that carries out in order:
(1) signal processing apparatus (14) is powering on the starting stage, and whether the electric signal that detects temperature sensing cable at the appointed time in the section in specialized range, is the A stage that then enters the normal monitoring duty; Otherwise send short circuit, open circuit fault alerting signal;
(2) in A stage of normal monitoring duty, because outer one deck NTC or the CTR characteristic external sheath layer (13) of coating of the two elastic metallic conductors (11) after stranded or the winding, when the be heated clad NTC or the CTR characteristic material resistance of two elastic metallic conductors (11) of temperature sensing cable reduces, signal processing apparatus (14) is judged at the appointed time in the section, as the electric signal that detects two elastic metallic conductors (11) of temperature sensing cable becomes, and then enters the B stage;
In the B stage, if electric signal changes, signal processing apparatus (14) sent constant temperature or differential temperature fire alarm signal when variable quantity or rate of change were set alarming threshold value greater than one; In the B stage, whether two elastic metallic conductors (11) of temperature sensing cable open circuit, and are that then signal processing apparatus (14) sends the fire alarm signal that opens circuit, otherwise enter the A stage of normal monitoring duty;
In the A stage, whether signal processing apparatus (14) detects two elastic metallic conductors (11) resistance of temperature sensing cable infinitely great, is that then signal processing apparatus (14) sends the open circuit fault alerting signal, otherwise enters the A stage of normal monitoring duty;
In the A stage, whether two elastic metallic conductors (11) that signal processing apparatus (14) detects temperature sensing cable are short-circuited, and are that then signal processing apparatus sends the short trouble alerting signal, otherwise enter the A stage of normal monitoring duty.
2. a kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble according to claim 1 and alarm method, it is characterized in that being provided with between two elastic metallic conductors (11) Vicat softening point and be 40 ℃～180 ℃ the fusible insulating material barrier layer (12) that maybe can melt, it is stranded or be intertwined that two elastic metallic conductors (11) of barrier layer (12) are set, it is stranded or twine pitch and choose between 20mm～200mm, outer extrusion molding or wrapped one deck NTC or CTR characteristic external sheath layer (13) are made temperature sensing cable.
3. according to described a kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble of claim 1 and alarm method, it is characterized in that: electric signal is resistance or electric capacity or inductance or voltage or electric current or thermoelectrical potential or frequency signal.
4. according to described a kind of beyond-retrieve-type cable-type line-type heat fire detector short trouble of claim 1 and alarm method, it is characterized in that: temperature sensing cable sends constant temperature or differential temperature fire alarm signal part in the B stage, and temperature sensing cable is reusable.
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| CN2008100103197A CN101226670B (en) | 2008-02-02 | 2008-02-02 | Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector |
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| CN2008100103197A CN101226670B (en) | 2008-02-02 | 2008-02-02 | Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector |
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| CN101226670B true CN101226670B (en) | 2011-11-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065420A (en) * | 2012-12-19 | 2013-04-24 | 邹志武 | Unrecoverable cable-type linear heat fire detector and alarm method thereof |
| CN107545692B (en) * | 2016-06-24 | 2023-12-19 | 首安工业消防有限公司 | Unrecoverable cable type linear temperature-sensing fire disaster detector |
| CN107390049A (en) * | 2017-06-23 | 2017-11-24 | 深圳市盛路物联通讯技术有限公司 | A kind of power cable fault monitoring method and device |
| CN107978121B (en) * | 2017-12-29 | 2024-02-09 | 江苏中实电子有限公司 | Reusable linear temperature-sensing fire detector and alarm method thereof |
| CN110967643B (en) * | 2019-04-30 | 2021-01-22 | 宁德时代新能源科技股份有限公司 | Thermal runaway detection circuit and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5198801A (en) * | 1990-01-18 | 1993-03-30 | Fire Detection Devices Ltd. | Low amperage dual sensing fire detector |
| CN101038696A (en) * | 2007-01-30 | 2007-09-19 | 张卫社 | Short-circuit alarming method for irrecoverable linear temperature-sensitive detector |
| JP2007249285A (en) * | 2006-03-13 | 2007-09-27 | Max Co Ltd | Fire alarm |
| CN200969134Y (en) * | 2006-10-19 | 2007-10-31 | 张卫社 | Linetype temperature-sensitive detector with short circuit fault alarm |
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2008
- 2008-02-02 CN CN2008100103197A patent/CN101226670B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5198801A (en) * | 1990-01-18 | 1993-03-30 | Fire Detection Devices Ltd. | Low amperage dual sensing fire detector |
| JP2007249285A (en) * | 2006-03-13 | 2007-09-27 | Max Co Ltd | Fire alarm |
| CN200969134Y (en) * | 2006-10-19 | 2007-10-31 | 张卫社 | Linetype temperature-sensitive detector with short circuit fault alarm |
| CN101038696A (en) * | 2007-01-30 | 2007-09-19 | 张卫社 | Short-circuit alarming method for irrecoverable linear temperature-sensitive detector |
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Application publication date: 20080723 Assignee: Shenyang Putaian Technology Co.,Ltd. Assignor: Zhang Chen Contract record no.: 2014210000036 Denomination of invention: Shorted fault and alarming method for beyond-retrieve-type cable-type line-type heat fire detector Granted publication date: 20111109 License type: Exclusive License Record date: 20140505 |
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Effective date of registration: 20160411 Address after: Shen Liaodong road Tiexi District of Shenyang City, Liaoning province 110022 47-2 Acer international city 31-2 Patentee after: Shenyang Putaian Technology Co.,Ltd. Address before: Shenyang City, Liaoning City Road 110011, Shenhe District 35 block A No. 3 Patentee before: Zhang Chen |