CN103033278A - Integrative temperature transmitter - Google Patents
Integrative temperature transmitter Download PDFInfo
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- CN103033278A CN103033278A CN2012105744057A CN201210574405A CN103033278A CN 103033278 A CN103033278 A CN 103033278A CN 2012105744057 A CN2012105744057 A CN 2012105744057A CN 201210574405 A CN201210574405 A CN 201210574405A CN 103033278 A CN103033278 A CN 103033278A
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Abstract
The invention provides an integrative temperature transmitter comprising at least three four-wire system thermal resistance sensors which are connected in series and in sequence and a temperature transmitter which collects temperature of the four-wire system thermal resistance sensors. Each four-wire system thermal resistance sensor comprises four signal terminals. Each two four-wire system thermal resistance sensors connected in series are connected through one of the respective signal terminals. The at least three four-wire system thermal resistance sensors connected in series and in sequence comprise N signal terminals. The number of signal collecting channels of the temperature transmitter is larger than or equal to N. According to the fact that the at least three four-wire system thermal resistance sensors are connected in series, output lines of the signal terminals of the four-wire system thermal resistance sensors are simplified, no external analog switch is needed to switch, components and a usable area of printed circuit boards (PCB) are not needed to be added when the integrative temperature transmitter collects a plurality of temperatures, and therefore producing cost is reduced.
Description
Technical field
The present invention relates to the temperature survey field, relate in particular a kind of integrative temperature transmitter.
Background technology
Current integrative temperature transmitter is more universal, integrative temperature transmitter can be very simple and direct mode the temperature signal in-200 ~+1600 ℃ of scopes is converted to two-wire system 4 ~ 20mA DC electric signal transmission to display instrument, regulator, registering instrument, DCS etc., realize accurate measurement and control to temperature.Integrative temperature transmitter generally includes Temperature and temperature sensor, and is common, and when practical application, temperature sensor is the four-wire system temperature sensor.
When temperature that need to be at a station acquisition different depth, main solution mostly or want many four-wire system temperature sensors to gather respectively instantly.For example, need to be when the temperature of high, normal, basic three degree of depth of position measurement, can adopt temperature sensor and 2 temperature transmitters with eight channel signal passages of 3 four-wire systems, perhaps gather with the temperature sensor of 3 four-wire systems and 1 temperature transmitter with eight channel signal passages and 1 analog switch, will make like this integrative temperature transmitter when gathering a plurality of temperature, increase device and PCB (Printed Circuit Board, printed circuit board) usable floor area, and then increased production cost.
Summary of the invention
In view of this, this case proposes a kind of integrative temperature transmitter of Decrease production cost, and technical scheme is as follows:
A kind of integrative temperature transmitter comprises at least three successively four-wire system thermal rsistance sensors of series connection, and 1 temperature transmitter that gathers described four-wire system thermal rsistance sensors temperature;
Wherein, each described four line thermal rsistance sensors comprises four signal ends, links to each other by its signal end separately between two four-wire system thermal rsistance sensors of series connection, and described at least three four-wire system thermal rsistance sensors of connecting successively have N signal end;
The quantity of the signal sampling channel of described temperature transmitter is more than or equal to N.
Preferably, in above-mentioned integrative temperature transmitter, described integrative temperature transmitter comprises 3 four-wire system thermal rsistance sensors and 1 temperature transmitter;
Wherein, link to each other by its signal end separately between two four-wire system thermal rsistance sensors of series connection, described successively 3 four-wire system thermal rsistance sensors of series connection have 8 signal ends; Described temperature transmitter has 8 signal sampling channels.
Preferably, in above-mentioned integrative temperature transmitter, it is characterized in that described signal sampling channel is the collection of simulant signal passage.
Preferably, in above-mentioned integrative temperature transmitter, it is characterized in that described signal sampling channel is the digital signal acquiring passage.
Have following beneficial effect in the technique scheme:
Via above-mentioned technical scheme as can be known, compared with prior art,
Series wiring mode by above-mentioned at least three four-wire system thermal rsistance sensors, the signal end output line of four-wire system thermal rsistance sensors can be simplified, and the quantity of the signal sampling channel of temperature transmitter is at least N and just can gathers and need not the external analog switch the four-wire system resistance temperature sensor of series connection with N signal end and switch, will make like this integrative temperature transmitter when gathering a plurality of temperature, need not increase device and PCB (Printed Circuit Board, printed circuit board) usable floor area, and then reduced production cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
The structural representation of a kind of integrative temperature transmitter that Fig. 1 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present application discloses a kind of integrative temperature transmitter, comprises at least three successively four-wire system thermal rsistance sensors of series connection, and 1 temperature transmitter that gathers four-wire system thermal rsistance sensors temperature;
Wherein, each four line thermal rsistance sensors comprises four signal ends, links to each other by its signal end separately between two four-wire system thermal rsistance sensors of series connection, and at least three four-wire system thermal rsistance sensors of connecting successively have N signal end;
The quantity of the signal sampling channel of temperature transmitter is more than or equal to N.
Series wiring mode by above-mentioned at least three four-wire system thermal rsistance sensors, the signal end output line of four-wire system thermal rsistance sensors can be simplified, and the quantity of the signal sampling channel of temperature transmitter is at least N and just can gathers and need not the external analog switch the four-wire system resistance temperature sensor of series connection with N signal end and switch, will make like this integrative temperature transmitter when gathering a plurality of temperature, need not increase device and PCB (Printed Circuit Board, printed circuit board) usable floor area, and then reduced production cost.
The below is take the temperature of the high, normal, basic three kinds of degree of depth of position measurement as example, the concrete integrative temperature transmitter of introducing the application.With reference to shown in Figure 1,
Integrative temperature transmitter comprises 3 four-wire system thermal rsistance sensors and 1 temperature transmitter 4, and above-mentioned 3 four-wire system thermal rsistance sensors are respectively four-wire system thermal rsistance sensors 1, four-wire system thermal rsistance sensors 2 and the four-wire system thermal rsistance sensors 3 among the figure; Four-wire system thermal rsistance sensors 1 has signal end 11, signal end 12, signal end 13 and signal end 14; Four-wire system thermal rsistance sensors 2 has signal end 21, signal end 22, signal end 23 and signal end 24; Four-wire system thermal rsistance sensors 3 has signal end 31, signal end 32, signal end 33 and signal end 34; Four-wire system thermal rsistance sensors 4 has signal end 41, signal end 42, signal end 43 and signal end 44.
The signal end 14 of four-wire system thermal rsistance sensors 1 is connected with the signal end 21 of four-wire system thermal rsistance sensors 2, the signal end 24 of four-wire system thermal rsistance sensors 2 is connected with the signal end 31 of four-wire system thermal rsistance sensors 3,3 four-wire system thermal rsistance sensors of series connection have 8 signal ends successively, are respectively signal end 11, signal end 12, signal end 13, signal end 22, signal end 23, signal end 32, signal end 33 and signal end 34.
Temperature transmitter in the integrative temperature transmitter has 8 signal sampling channels, when using 8 signal sampling channels to gather 3 four-wire system thermal rsistance sensors temperature, the use differential pair gathers, electric current flows into from signal end 11, flow through successively four-wire system thermal rsistance sensors 1, four-wire system thermal rsistance sensors 2 and four-wire system thermal rsistance sensors 3, flow out from signal end 34 at last, when gathering the temperature signal of four-wire system thermal rsistance sensors 1, can the collection signal end 12 with the voltage difference U 1 of signal end 13, obtain the temperature signal of four-wire system thermal rsistance sensors 1 by voltage difference U 1; In like manner, when gathering the temperature signal of four-wire system thermal rsistance sensors 2, can collection signal end 22 and the voltage difference U 2 of signal end 23, obtain the temperature signal of four-wire system thermal rsistance sensors 2 by voltage difference U 2; When gathering the temperature signal of four-wire system thermal rsistance sensors 3, can collection signal end 32 and the voltage difference U 3 of signal end 33, obtain the temperature signal of four-wire system thermal rsistance sensors 3 by voltage difference U 3, if also have more at most the like.
Preferably, in other embodiment of the application, the signal sampling channel in the integrative temperature transmitter can be the collection of simulant signal passage.
Preferably, in other embodiment of the application, the signal sampling channel in the integrative temperature transmitter can be the digital signal acquiring passage.
By above-mentioned four-wire system thermal rsistance sensors 1, the series wiring mode of four-wire system thermal rsistance sensors 2 and four-wire system thermal rsistance sensors 3, the 12 signal end output lines that amount to of 3 four-wire system thermal rsistance sensors can be reduced to 8, for example when gathering the temperature spot of three different depths, just can gather and need not the external analog switch 3 four-wire system resistance temperature sensor with 18 channel temperature transmitter and switch, will make like this integrative temperature transmitter when gathering a plurality of temperature, need not increase device and PCB (PrintedCircuit Board, printed circuit board) usable floor area, and then reduced production cost.
Also need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having in the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. an integrative temperature transmitter is characterized in that, comprises at least three successively four-wire system thermal rsistance sensors of series connection, and 1 temperature transmitter that gathers described four-wire system thermal rsistance sensors temperature;
Wherein, each described four line thermal rsistance sensors comprises four signal ends, links to each other by its signal end separately between two four-wire system thermal rsistance sensors of series connection, and described at least three four-wire system thermal rsistance sensors of connecting successively have N signal end;
The quantity of the signal sampling channel of described temperature transmitter is more than or equal to N.
2. integrative temperature transmitter according to claim 1 is characterized in that, described integrative temperature transmitter comprises 3 four-wire system thermal rsistance sensors and 1 temperature transmitter;
Wherein, link to each other by its signal end separately between two four-wire system thermal rsistance sensors of series connection, described successively 3 four-wire system thermal rsistance sensors of series connection have 8 signal ends; Described temperature transmitter has 8 signal sampling channels.
3. integrative temperature transmitter according to claim 1 and 2 is characterized in that, described signal sampling channel is the collection of simulant signal passage.
4. integrative temperature transmitter according to claim 1 and 2 is characterized in that, described signal sampling channel is the digital signal acquiring passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574405.7A CN103033278B (en) | 2012-12-26 | 2012-12-26 | Integrative temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574405.7A CN103033278B (en) | 2012-12-26 | 2012-12-26 | Integrative temperature transmitter |
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| Publication Number | Publication Date |
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| CN103033278A true CN103033278A (en) | 2013-04-10 |
| CN103033278B CN103033278B (en) | 2015-07-29 |
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| CN201210574405.7A Active CN103033278B (en) | 2012-12-26 | 2012-12-26 | Integrative temperature transmitter |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2526027A1 (en) * | 1975-06-11 | 1976-12-23 | Hartmann & Braun Ag | Refrigerator plant temp. difference monitor - provides multipoint direct measurement of temp. differences as current differences to accuracy of tenth of degree C |
| EP0187317A1 (en) * | 1985-01-03 | 1986-07-16 | Siemens Aktiengesellschaft | Measuring equipment with resistance measurement transducer |
| US5171091A (en) * | 1989-10-05 | 1992-12-15 | Endress U. Hauser Gmbh U. Co. | Temperature measuring circuit |
| US5929344A (en) * | 1997-07-28 | 1999-07-27 | Micro Motion, Inc. | Circuitry for reducing the number of conductors for multiple resistive sensors on a coriolis effect mass flowmeter |
| CN201837478U (en) * | 2010-10-26 | 2011-05-18 | 重庆迪洋仪表有限责任公司 | Explosion proof type multi-point temperature measurement system |
| CN202057430U (en) * | 2011-04-27 | 2011-11-30 | 重庆迪洋仪表有限责任公司 | Four wire system resistance thermometer detector temperature transmitter |
| CN203203720U (en) * | 2012-12-26 | 2013-09-18 | 重庆川仪自动化股份有限公司 | Integrative temperature transmitter |
-
2012
- 2012-12-26 CN CN201210574405.7A patent/CN103033278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2526027A1 (en) * | 1975-06-11 | 1976-12-23 | Hartmann & Braun Ag | Refrigerator plant temp. difference monitor - provides multipoint direct measurement of temp. differences as current differences to accuracy of tenth of degree C |
| EP0187317A1 (en) * | 1985-01-03 | 1986-07-16 | Siemens Aktiengesellschaft | Measuring equipment with resistance measurement transducer |
| US5171091A (en) * | 1989-10-05 | 1992-12-15 | Endress U. Hauser Gmbh U. Co. | Temperature measuring circuit |
| US5929344A (en) * | 1997-07-28 | 1999-07-27 | Micro Motion, Inc. | Circuitry for reducing the number of conductors for multiple resistive sensors on a coriolis effect mass flowmeter |
| CN201837478U (en) * | 2010-10-26 | 2011-05-18 | 重庆迪洋仪表有限责任公司 | Explosion proof type multi-point temperature measurement system |
| CN202057430U (en) * | 2011-04-27 | 2011-11-30 | 重庆迪洋仪表有限责任公司 | Four wire system resistance thermometer detector temperature transmitter |
| CN203203720U (en) * | 2012-12-26 | 2013-09-18 | 重庆川仪自动化股份有限公司 | Integrative temperature transmitter |
Non-Patent Citations (1)
| Title |
|---|
| 张雷杰等: "宽量程高精度铂电阻温度变送器设计", 《导弹与航天运载技术》 * |
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| CN103033278B (en) | 2015-07-29 |
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