CN103644979A - Linear type temperature sensor - Google Patents
Linear type temperature sensor Download PDFInfo
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- CN103644979A CN103644979A CN201310676750.6A CN201310676750A CN103644979A CN 103644979 A CN103644979 A CN 103644979A CN 201310676750 A CN201310676750 A CN 201310676750A CN 103644979 A CN103644979 A CN 103644979A
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Abstract
The invention relates to the field of a sensor and especially to a temperature sensor. The linear type temperature sensor disclosed by the invention comprises a temperature sending line and an interface, wherein the interface is connected with the two ends of the temperature sensing line, the temperature sensing line is a thermistor line, one end of the temperature sensing line is provided with a signal amplifier, the interface comprises a shield housing, an insulation layer disposed in the shield housing and a connection column in the insulation layer, and the connection column is connected with the temperature sensing line. The linear type temperature sensor can measure the temperature change of a whole line along the temperature sensing line, and the measuring position scope can be wider.
Description
Technical field
The present invention relates to sensor field, especially a kind of temperature sensor.
Background technology
Temperature sensor refers to the sensor that can experience temperature and convert usable output signal to.Temperature sensor is to develop the earliest, a most widely used class sensor.The market share of temperature sensor has substantially exceeded other sensor.In prior art, temperature sensor finite volume, can only measure local temperature change, if the position of required measurement temperature is wider, a plurality of sensors just need to be set and measures, and so not only cost is higher, and often circuit arrangement is complicated.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of line-type temp sensor that can measure wider position range.
Line-type temp sensor disclosed by the invention, comprise warming line and interface, described interface is connected to the two ends of warming line, described warming line is thermistor line, one end of described warming line is provided with signal amplifier, described interface comprises screening can, is arranged in the insulation course of screening can and the joint pin of insulation course, and described joint pin is connected with warming line.
Preferably, described warming line surface is provided with anti-interference layer.
Preferably, described warming line is negative tempperature coefficient thermistor line.
The invention has the beneficial effects as follows: traditional temperature sensor can only be measured a temperature variation on point, and line-type temp sensor provided by the invention can be measured along the temperature variation on a line of warming line, line-type temp sensor provided by the invention measuring position wider, thereby arranging of signal amplifier can show more small curent change by amplified current, makes this line-type temp sensor sensitiveer.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Mark in figure: 1 is warming line, 2 is signal amplifier, and 301 is screening can, and 302 is insulation course, and 303 is joint pin, 4 is anti-interference layer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, line-type temp sensor disclosed in this invention comprises warming line 1 and interface, described interface is connected to the two ends of warming line 1, described warming line 1 is thermistor line, one end of described warming line 1 is provided with signal amplifier 2, described interface comprises screening can 301, is arranged in the insulation course 302 of screening can 301 and the joint pin 303 of insulation course 302, and described joint pin 303 is connected with warming line 1.During use, first line-type temp sensor two ends are added to less constant voltage, signal amplifier is switched on simultaneously, in line-type temp sensor, will form constant electric current, notice that voltage can not be too large, otherwise warming line 1 can heat up because of the heat that electric current produces, make it can not Measurement accuracy temperature.When temperature variation, the resistance of warming line 1 also can change, thereby makes curent change, and by just recognizing temperature variation to the detection of curent change, so, this line-type temp sensor has just been realized its effect of measuring temperature.This line-type temp sensor can be measured along the temperature variation on a line of warming line 1, measuring position wider.In use, warming line 1 can be measured to the body surface of temperature around need, so no matter that position of this object occurs that temperature anomaly can be detected.Signal amplifier 2 can amplify some small curent changes and amplify, and it is more easily detected, and makes this line-type temp sensor sensitiveer.The screening can 301 of described interface mainly prevents the impact of external factor docking port place current delivery.
In such scheme, because the curent change that temperature variation causes may be less, easy and extraneous factor disturbs the Weak current variation causing to obscure, so as optimal way, described warming line 1 surface is provided with anti-interference layer 4.So just can alleviate external interference to having measured the impact of temperature.
This line-type temp sensor is in measuring overheated or fire preventing process, when abnormal conditions occur, often temperature is higher, and the resistive conductor of positive temperature coefficient (PTC) can raise and resistance increase along with temperature, thereby cause electric current to reduce, and under normal condition, the electric current in warming line 1 is original just very little, can cause temperature sensor measurement out of true like this, so as optimal way, described warming line 1 is negative tempperature coefficient thermistor line.Negative tempperature coefficient thermistor line can reduce by resistance with temperature survey, and electric current increases, and is so more conducive to measure temperature variation.
Claims (3)
1. line-type temp sensor, comprise warming line (1) and interface, described interface is connected to the two ends of warming line (1), it is characterized in that: described warming line (1) is thermistor line, one end of described warming line (1) is provided with signal amplifier (2), described interface comprises screening can (301), is arranged in the insulation course (302) of screening can (301) and the joint pin (303) of insulation course (302), and described joint pin (303) is connected with warming line (1).
2. line-type temp sensor as claimed in claim 1, is characterized in that: described warming line (1) surface is provided with anti-interference layer (4).
3. line-type temp sensor as claimed in claim 1, is characterized in that: described warming line (1) is negative tempperature coefficient thermistor line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310676750.6A CN103644979A (en) | 2013-12-07 | 2013-12-07 | Linear type temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310676750.6A CN103644979A (en) | 2013-12-07 | 2013-12-07 | Linear type temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103644979A true CN103644979A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310676750.6A Pending CN103644979A (en) | 2013-12-07 | 2013-12-07 | Linear type temperature sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103644979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485169A (en) * | 2014-11-06 | 2015-04-01 | 常州市荣顺电子有限公司 | Anti-interference automobile sound equipment signal wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08339845A (en) * | 1995-06-12 | 1996-12-24 | Sukegawa Electric Co Ltd | Connecting part of sheath cable |
| CN2599551Y (en) * | 2003-01-20 | 2004-01-14 | 首安工业消防股份有限公司 | Intelligent microcomputer modulator for analog quantity type linear temperature sensing detector |
| CN2624196Y (en) * | 2003-04-01 | 2004-07-07 | 张鹰 | Sensing cable and heat sensitive detector using the same |
| CN201051024Y (en) * | 2007-11-16 | 2008-04-23 | 上海浦东乐韵电器配件厂 | Novel temperature induction cable |
-
2013
- 2013-12-07 CN CN201310676750.6A patent/CN103644979A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08339845A (en) * | 1995-06-12 | 1996-12-24 | Sukegawa Electric Co Ltd | Connecting part of sheath cable |
| CN2599551Y (en) * | 2003-01-20 | 2004-01-14 | 首安工业消防股份有限公司 | Intelligent microcomputer modulator for analog quantity type linear temperature sensing detector |
| CN2624196Y (en) * | 2003-04-01 | 2004-07-07 | 张鹰 | Sensing cable and heat sensitive detector using the same |
| CN201051024Y (en) * | 2007-11-16 | 2008-04-23 | 上海浦东乐韵电器配件厂 | Novel temperature induction cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485169A (en) * | 2014-11-06 | 2015-04-01 | 常州市荣顺电子有限公司 | Anti-interference automobile sound equipment signal wire |
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Application publication date: 20140319 |
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| RJ01 | Rejection of invention patent application after publication |