CN103033278B - Integrative temperature transmitter - Google Patents
Integrative temperature transmitter Download PDFInfo
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- CN103033278B CN103033278B CN201210574405.7A CN201210574405A CN103033278B CN 103033278 B CN103033278 B CN 103033278B CN 201210574405 A CN201210574405 A CN 201210574405A CN 103033278 B CN103033278 B CN 103033278B
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- thermal rsistance
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Abstract
Embodiments provide a kind of integrative temperature transmitter, comprise at least three four-wire system thermal rsistance sensors of connecting successively, and the temperature transmitter of 1 collection four-wire system thermal rsistance sensors temperature; Wherein, each four line thermal rsistance sensors comprise four signal ends, and be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, at least three four-wire system thermal rsistance sensors of connecting successively have N number of signal end; The quantity of the signal sampling channel of temperature transmitter is more than or equal to N.By the series wiring mode of 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 switch without the need to external analog switch, integrative temperature transmitter will be made when gathering multiple temperature like this need not to increase the usable floor area of device and PCB, and then reduce production cost.
Description
Technical field
The present invention relates to field of temperature measurement, relate to a kind of integrative temperature transmitter in particular.
Background technology
Current integrative temperature transmitter is more universal, integrative temperature transmitter can be very simple and direct mode the temperature signal within the scope of-200 ~+1600 DEG C is converted to the electric signal transmission of two-wire system 4 ~ 20mA DC to display instrument, regulator, registering instrument, DCS etc., realize the accurate measurement to temperature and control.Integrative temperature transmitter generally includes Temperature and temperature sensor, common, and when practical application, temperature sensor is four-wire system temperature sensor.
When needs are when the temperature of a station acquisition different depth, instantly main solution still wants many four-wire system temperature sensors to gather respectively mostly.Such as, need when the temperature of high, normal, basic three degree of depth of position measurement, the temperature sensor of 3 four-wire systems and 2 can be adopted to have the temperature transmitter of eight channel signal passages, or use the temperature sensor of 3 four-wire systems and 1 to have the temperature transmitter of eight channel signal passages and 1 analog switch gathers, integrative temperature transmitter will be made like this to increase device and PCB (Printed Circuit Board when gathering multiple temperature, printed circuit board) usable floor area, and then add production cost.
Summary of the invention
In view of this, this case proposes a kind of integrative temperature transmitter reducing production cost, and technical scheme is as follows:
A kind of integrative temperature transmitter, comprises at least three four-wire system thermal rsistance sensors of connecting successively, and the temperature transmitter of 1 described four-wire system thermal rsistance sensors temperature of collection;
Wherein, each described four line thermal rsistance sensors comprise four signal ends, and be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, described at least three four-wire system thermal rsistance sensors of connecting successively have N number of 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, be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, described 3 four-wire system thermal rsistance sensors of connecting successively 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 collection of simulant signal passage.
Preferably, in above-mentioned integrative temperature transmitter, it is characterized in that, described signal sampling channel is digital signal acquiring passage.
There is in technique scheme following beneficial effect:
Known via above-mentioned technical scheme, compared with prior art,
By the series wiring mode of 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 just can gather the four-wire system resistance temperature sensor of the series connection with N number of signal end and switch without the need to external analog switch, integrative temperature transmitter will be made like this need not to increase device and PCB (Printed Circuit Board when gathering multiple temperature, printed circuit board) usable floor area, and then reduce production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
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 present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present application discloses a kind of integrative temperature transmitter, comprises at least three four-wire system thermal rsistance sensors of connecting successively, and the temperature transmitter of 1 collection four-wire system thermal rsistance sensors temperature;
Wherein, each four line thermal rsistance sensors comprise four signal ends, and be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, at least three four-wire system thermal rsistance sensors of connecting successively have N number of signal end;
The quantity of the signal sampling channel of temperature transmitter is more than or equal to N.
By the series wiring mode of 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 just can gather the four-wire system resistance temperature sensor of the series connection with N number of signal end and switch without the need to external analog switch, integrative temperature transmitter will be made like this need not to increase device and PCB (Printed Circuit Board when gathering multiple temperature, printed circuit board) usable floor area, and then reduce production cost.
Below for the temperature of the high, normal, basic three kinds of degree of depth of position measurement, the concrete integrative temperature transmitter introducing the application.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 four-wire system thermal rsistance sensors 3 in 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 connecting successively have 8 signal ends, 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 integrative temperature transmitter has 8 signal sampling channels, when use 8 signal sampling channels gather 3 four-wire system thermal rsistance sensors temperature, use differential pair gathers, electric current flows into from signal end 11, flow through four-wire system thermal rsistance sensors 1, four-wire system thermal rsistance sensors 2 and four-wire system thermal rsistance sensors 3 successively, finally flow out from signal end 34, when gathering the temperature signal of four-wire system thermal rsistance sensors 1, can collection signal end 12 and the voltage difference U 1 of signal end 13, the temperature signal of four-wire system thermal rsistance sensors 1 is obtained 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, the temperature signal of four-wire system thermal rsistance sensors 2 is obtained 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, obtained the temperature signal of four-wire system thermal rsistance sensors 3 by voltage difference U 3, if also have more at most.
Preferably, in other embodiments of the application, the signal sampling channel in integrative temperature transmitter can be collection of simulant signal passage.
Preferably, in other embodiments of the application, the signal sampling channel in integrative temperature transmitter can be 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, such as when the temperature spot of collection three different depths, just can gather 3 four-wire system resistance temperature sensor with 18 channel temperature transmitter and switch without the need to external analog switch, integrative temperature transmitter will be made like this need not to increase device and PCB (PrintedCircuit Board when gathering multiple temperature, printed circuit board) usable floor area, and then reduce production cost.
Also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. an integrative temperature transmitter, is characterized in that, comprises at least three four-wire system thermal rsistance sensors of connecting successively, and the temperature transmitter of 1 described four-wire system thermal rsistance sensors temperature of collection;
Wherein, each described four-wire system thermal rsistance sensors comprises four signal ends, and be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, described at least three four-wire system thermal rsistance sensors of connecting successively have N number of signal end;
The quantity of the signal sampling channel of described temperature transmitter is more than or equal to N;
Concrete, described integrative temperature transmitter comprises 3 four-wire system thermal rsistance sensors and 1 temperature transmitter;
Wherein, be connected by its respective signal end between two four-wire system thermal rsistance sensors of series connection, described 3 four-wire system thermal rsistance sensors of connecting successively have 8 signal ends, are respectively the first signal end, secondary signal end, the 3rd signal end, the 4th signal end, the 5th signal end, the 6th signal end, the 7th signal end and the 8th signal end; Described temperature transmitter has 8 signal sampling channels;
When gathering the temperature signal of the first four-wire system thermal rsistance sensors, gather the voltage difference U 1 of secondary signal end and the 3rd signal end, obtained the temperature signal of the first four-wire system thermal rsistance sensors by voltage difference U 1; When gathering the temperature signal of the second four-wire system thermal rsistance sensors, gather the voltage difference U 2 of the 4th signal end and the 5th signal end, obtained the temperature signal of the second four-wire system thermal rsistance sensors by voltage difference U 2; When gathering the temperature signal of the 3rd four-wire system thermal rsistance sensors, gather the voltage difference U 3 of the 6th signal end and the 7th signal end, obtained the temperature signal of the 3rd four-wire system thermal rsistance sensors by voltage difference U 3.
2. integrative temperature transmitter according to claim 1, is characterized in that, described signal sampling channel is collection of simulant signal passage.
3. integrative temperature transmitter according to claim 1, is characterized in that, described signal sampling channel is 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210574405.7A CN103033278B (en) | 2012-12-26 | 2012-12-26 | Integrative temperature transmitter |
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| CN103033278A CN103033278A (en) | 2013-04-10 |
| CN103033278B true 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)
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|---|---|---|---|---|
| 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 |
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| 宽量程高精度铂电阻温度变送器设计;张雷杰等;《导弹与航天运载技术》;20100831(第4期);第54-57页 * |
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| CN103033278A (en) | 2013-04-10 |
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