CN101251943A - Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector - Google Patents
Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector Download PDFInfo
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- CN101251943A CN101251943A CNA2008100105741A CN200810010574A CN101251943A CN 101251943 A CN101251943 A CN 101251943A CN A2008100105741 A CNA2008100105741 A CN A2008100105741A CN 200810010574 A CN200810010574 A CN 200810010574A CN 101251943 A CN101251943 A CN 101251943A
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- temperature
- circuit breaker
- sensing circuit
- fuse metal
- sensing
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Abstract
The invention provides a fusible metal temperature-sensing breaker type linear temperature-sensing detector which is provided with a closed circuit signal acquisition circuit by two ends of a temperature sensing cable being respectively connected with a microcomputer modulator and a terminating resistance R; two parallel conductors are adopted, wherein one conductor is connected in series with a plurality of fusible metal temperature-sensing breakers, each of which is in parallel connection with thermal resistors with NTC, CTR and PTC characteristics, while the other conductor is covered by an NTC characteristic material layer or an insulant layer; because the fusible metal breaker is broken when being heated, a determination of outputting a multilevel warning signal can be made according to variations of a resistance value and a voltage of the thermal resistors with NTC, CTR and PTC characteristics connected in parallel; or the resistance value of the NTC characteristic material layer between the two conductors is reduced when being heated, a multilevel warning signal can be outputted according to a plurality of warning thresholds or variations set by a reduced resistance value or a lower voltage, which are larger than a set threshold; determinations of outputting functions of error alarms for short circuit, open circuit and current failure are made, according to variations of the resistance value and the voltage; and the fusible metal temperature-sensing breaker type linear temperature-sensing detector can be used repeatedly.
Description
Technical field
The present invention relates to fire alarm installation, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector.
Background technology
The parallel analog linear temperature-sensing fire detecting cable of discrete thermistor of the prior art referring to Fig. 1, is surveyed in the cable at this, is made up of a plurality of thermistor element R that are connected in parallel between two detecting conductors 14,15.When being heated for a certain section that surveys cable, with the rising of temperature, the resistance value of the thermistor in this section descends (or increase), causes the all-in resistance between the detector conductor to descend (or rising), reports to the police according to the variation of all-in resistance.The shortcoming of this detection cable is alarm temperature with the length of being heated, uses length relevant, and the long alarm temperature of the length of being heated is just low, and the short alarm temperature of the length of being heated is height just.So just unfavorable to the reliability of detector, report by mistake easily.For this reason, need to propose a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector.
Summary of the invention
The object of the present invention is to provide a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector, this detector mainly is connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator and terminal resistance R respectively by the temperature sensing cable two ends and forms.The operating temperature of connecting fuse metal temperature-sensing circuit breaker is to select for use between 60 ℃～180 ℃.The connecting fuse metal temperature-sensing circuit breaker of identical or different operating temperature, each connecting fuse metal temperature-sensing circuit breaker NTC in parallel again, CTR, ptc characteristics thermistor, another strip conductor coats NTC characteristic material or insulation material layer, and two conductors that different components and clad arranged can adopt mutual winding or parallel combining form to be set together and make temperature sensing cable then.Because connecting fuse metal temperature-sensing circuit breaker is subjected to thermal cut-out, microcomputer modulator can be according to two strip conductors after wherein the connecting fuse metal temperature-sensing circuit breaker of a series connection opens circuit, detect the resistance and the change in voltage of its NTC in parallel, CTR, ptc characteristics thermistor, judge the multistage alerting signal of output.Microcomputer modulator also can be according to the NTC characteristic material that is provided with between two strip conductors, and its resistance or voltage reduce because temperature sensing cable is heated, and reduce or a plurality of alerting signals of the little setting of voltage according to resistance.Microcomputer modulator also can be according to resistance or change in voltage between two strip conductors, sets short circuit, opens circuit, the disconnection fault alarming threshold value, judges the output failure alarm signal, and the present invention is still reusable behind the Normal Alarm.
Compared with the prior art, the advantage that a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector of the present invention has is: the one, and alarm temperature and temperature sensing cable environment temperature, use length have nothing to do, overcome be heated in the prior art that the long alarm temperature of length is low, the short alarm temperature height of the length of being heated, the high alarm temperature of environment temperature is low, the low high shortcoming of alarm temperature of environment temperature.The 2nd, alarm temperature can be set, can multistage warning output.
Description of drawings
Fig. 1 surveys the cable structure synoptic diagram for the parallel analog linear temperature-sensing of existing discrete thermistor;
Fig. 2 is a kind of structural representation of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector example 1.
Fig. 3 is a kind of structural representation of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector example 2.
Embodiment
A kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector, example 1 is seen Fig. 2, mainly be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be to adopt two strip conductors 1, a plurality of connecting fuse metal temperature-sensing circuit breakers 2 of a strip conductor 1 series connection wherein, each connecting fuse metal temperature-sensing circuit breaker 2 NTC in parallel again, CTR, ptc characteristics thermistor R1, another strip conductor 1 coats NTC characteristic material or insulation material layer 5, and two have the conductor 1 of different components and clad can adopt mutual winding or parallel combining form setting then.Whether resistance or change in voltage change between two conductors 1 of microcomputer modulator 4 detections, when the temperature sensing cable heating temperature surpasses the operating temperature of connecting fuse metal temperature-sensing circuit breaker 2, connecting fuse metal temperature-sensing circuit breaker 2 disconnects, according to being connected in parallel on NTC, CTR on the connecting fuse metal temperature-sensing circuit breaker 2, ptc characteristics thermistor R1 because of heated resistance or change in voltage, microcomputer modulator 4 is set the different temperatures alarming threshold value according to resistance or change in voltage, judges the multistage alerting signal of output.Or according to NTC characteristic material between two conductors 1 or insulation material layer 5, its resistance or voltage reduce because temperature sensing cable is heated, and according to resistance or voltage reduces to set a plurality of alarming threshold values or variable quantity is set threshold values A greater than one, export multistage alerting signal.Also can set threshold values B less than one and judge the output short-circuit failure alarm signal according to the resistance of short circuit between two conductors 1.Also can according between two conductors 1 wherein one open circuit or all open circuit, whether resistance or voltage are sent out and are changed before being short-circuited, and are, judge output open circuit fault alerting signal.Also can powering on according to the power transfer relay of microcomputer modulator 4, often battle, closed or normally closed point disconnected output operate as normal signal, disconnection or normally closed closure output electric signal process unit 4 disconnection fault alerting signals otherwise power transfer relay is often made war.Microcomputer modulator 4 can be judged the number that opens circuit of series connecting fuse metal temperature-sensing circuit breaker 2 according to the resistance of NTC, CTR, ptc characteristics thermistor R1, sends temperature sensing cable maintenance alerting signal according to the quantity that opens circuit of setting connecting fuse metal temperature-sensing circuit breaker 2.
Above-mentioned conductor 1 can be that welding or machinery cooperate crimping with the ways of connecting of connecting fuse metal temperature-sensing circuit breaker 2 and thermistor R1, and the interval of the connecting fuse metal temperature-sensing circuit breaker 2 that its series connection is provided with can be designed to 1～10 every meter.
2 one kinds of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detectors of embodiment, see Fig. 3, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 4 and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: adopt two strip conductors 1, a plurality of connecting fuse metal temperature-sensing circuit breakers 2 of a strip conductor 1 series connection wherein, another strip conductor 1 coats NTC characteristic material or insulation material layer 5, and two have the conductor 1 of clad, different components can adopt mutual winding or parallel combining form setting then.
The foregoing description 1～embodiment 2, two strip conductors 1 of temperature sensing cable can also be that bare conductor keeps the parallel extrusion molding of certain distance to coat in NTC characteristic material or the insulation material layer 5, after wherein the NTC characteristic material at the place of being connected in series of conductor 1 or insulation material layer remove, connecting fuse metal temperature-sensing circuit breaker 2 is connected with a conductor 1 that exposes, and the junction seals with insulating material then.
The foregoing description 1～embodiment 2, two strip conductors 1 can also coat NTC characteristic material or insulation material layer 5 respectively.After wherein the NTC characteristic material at the place of being connected in series of a strip conductor 1 or insulation material layer remove, connecting fuse metal temperature-sensing circuit breaker 2 with expose conductor 1 and be connected, the junction seals with insulating material then.
The foregoing description 1～embodiment 2 outermosts can coat outer jacket or braiding oversheath again.
Material behavior explanation used in the present invention:
1, connecting fuse metal temperature-sensing circuit breaker: operating temperature is 60 ℃～180 ℃.
2, conductor: specification is selected for use between φ 0.2mm～φ 3mm.
Material can be selected the alloy material of steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel wire and above-mentioned material for use, wire external layer or zinc-plated, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating.Conductor can select in the above-mentioned metal wherein one or more.
5, outer jacket: can be the wherein a kind of of high molecular polymer plastic insulation material.Also can have the specific volume resistance of NTC, CTR, ptc characteristics 10
-4～10
20Between material.
6, NTC characteristic material layer: can be according to high molecular polymer plastic material wherein a kind of that the NTC characteristic is arranged.Specific volume resistance is 10
-1～10
10Between select for use.
7, insulation material layer: can be the wherein a kind of of high molecular polymer plastic insulation material, specific volume resistance be 10
8～10
20Between select for use.
8, braiding oversheath: can be that plastic monofilament or wire diameter are preferred between 0.01～0.5mm.
Claims (6)
1, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator (4) and terminal resistance R respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be to adopt two strip conductors (1), a strip conductor (1) a plurality of connecting fuse metal temperature-sensing circuit breakers (2) of connecting wherein, each connecting fuse metal temperature-sensing circuit breaker NTC in parallel again, CTR, ptc characteristics thermistor or thermopair R1, another strip conductor (1) coats NTC characteristic material or insulation material layer (5), and two have the conductor (1) of clad and device can adopt mutual winding or parallel combining form setting then.
2, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector according to claim 1, be characterised in that the structure of temperature sensing cable: the interval of connecting fuse metal temperature-sensing circuit breaker (2) can be designed to 1～10 every meter, and the operating temperature of connecting fuse metal temperature-sensing circuit breaker (2) is to select for use between 60 ℃～180 ℃.
3, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector according to claim 1, the structure that is characterised in that temperature sensing cable is also: adopt two strip conductors (1), a strip conductor (1) a plurality of connecting fuse metal temperature-sensing circuit breakers (2) of connecting wherein, another strip conductor (1) coats NTC characteristic material or insulation material layer (5), and two have the conductor (1) of clad, different components can adopt mutual winding or parallel combining form setting then.
4, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector according to claim 1, the structure that it is characterized in that temperature sensing cable: two strip conductors (1) of temperature sensing cable can also be that bare conductor keeps the parallel extrusion molding of certain distance to be coated in NTC characteristic material or the insulating material (5), after wherein the NTC characteristic material at the place of being connected in series of conductor (1) or insulation material layer remove, connecting fuse metal temperature-sensing circuit breaker (2) is connected with a conductor (1) that exposes, and the junction seals with insulating material then.
5, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector according to claim 1, the structure that it is characterized in that temperature sensing cable: two strip conductors (1) can also coat NTC characteristic material or insulation material layer (5) respectively, after wherein the NTC characteristic material at the place of being connected in series of a strip conductor (1) or insulation material layer remove, connecting fuse metal temperature-sensing circuit breaker (2) with expose conductor (1) and be connected, the junction seals with insulating material then.
6, a kind of series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector according to claim 1 is characterized in that the structure of temperature sensing cable: the outermost layer of temperature sensing cable can coat outer jacket or braiding oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100105741A CN101251943A (en) | 2008-03-07 | 2008-03-07 | Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100105741A CN101251943A (en) | 2008-03-07 | 2008-03-07 | Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector |
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|---|---|
| CN101251943A true CN101251943A (en) | 2008-08-27 |
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|---|---|---|---|
| CNA2008100105741A Pending CN101251943A (en) | 2008-03-07 | 2008-03-07 | Series connecting fuse metal temperature-sensing circuit breaker type linear temperature-sensitive detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852680A (en) * | 2012-12-07 | 2014-06-11 | 中国核动力研究设计院 | Device and method for detecting broken line of switching value signal transmission circuit |
| CN104867264A (en) * | 2014-02-26 | 2015-08-26 | 苏州热工研究院有限公司 | Fire early-warning method and system |
| CN110785822A (en) * | 2017-05-24 | 2020-02-11 | Tdk电子股份有限公司 | Electrical component with a securing element |
| EP3683087A1 (en) * | 2019-01-17 | 2020-07-22 | Samsung SDI Co., Ltd. | Relay with temperature sensors for safety applications according to iso 26262 |
| CN114069078A (en) * | 2020-07-30 | 2022-02-18 | 哲弗智能系统（上海）有限公司 | Lithium battery thermal runaway early warning system and lithium battery system |
| CN115307771A (en) * | 2022-10-10 | 2022-11-08 | 深圳市锐深科技有限公司 | Temperature measuring circuit and method based on NTC sensor |
-
2008
- 2008-03-07 CN CNA2008100105741A patent/CN101251943A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852680A (en) * | 2012-12-07 | 2014-06-11 | 中国核动力研究设计院 | Device and method for detecting broken line of switching value signal transmission circuit |
| CN104867264A (en) * | 2014-02-26 | 2015-08-26 | 苏州热工研究院有限公司 | Fire early-warning method and system |
| CN110785822A (en) * | 2017-05-24 | 2020-02-11 | Tdk电子股份有限公司 | Electrical component with a securing element |
| US11740280B2 (en) | 2017-05-24 | 2023-08-29 | Tdk Electronics Ag | Electric component with fail safe element |
| EP3683087A1 (en) * | 2019-01-17 | 2020-07-22 | Samsung SDI Co., Ltd. | Relay with temperature sensors for safety applications according to iso 26262 |
| CN114069078A (en) * | 2020-07-30 | 2022-02-18 | 哲弗智能系统（上海）有限公司 | Lithium battery thermal runaway early warning system and lithium battery system |
| CN114069078B (en) * | 2020-07-30 | 2024-05-24 | 哲弗智能系统（上海）有限公司 | Lithium battery thermal runaway early warning system and lithium battery system |
| CN115307771A (en) * | 2022-10-10 | 2022-11-08 | 深圳市锐深科技有限公司 | Temperature measuring circuit and method based on NTC sensor |
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Open date: 20080827 |