CN202382873U - Intelligent temperature transmitter - Google Patents
Intelligent temperature transmitter Download PDFInfo
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- CN202382873U CN202382873U CN2011205083479U CN201120508347U CN202382873U CN 202382873 U CN202382873 U CN 202382873U CN 2011205083479 U CN2011205083479 U CN 2011205083479U CN 201120508347 U CN201120508347 U CN 201120508347U CN 202382873 U CN202382873 U CN 202382873U
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Abstract
The utility model provides an intelligent temperature transmitter. The intelligent temperature transmitter comprises a pre-amplifier, an A/D (Analog/Digital) converter, a central processor, a D/A (Digital/Analog) converter and an output module, wherein a signal output terminal from a temperature sensor is connected with the signal input terminal of the pre-amplifier; the signal output terminal of the pre-amplifier is connected with the signal input terminal of the A/D converter; the signal output terminal of the A/D converter is connected with the signal input terminal of the central processor; the signal output terminal of the central processor is connected with the signal input terminal of the D/A converter; and the signal output terminal of the D/A converter is connected with the signal input terminal of the output module. The intelligent temperature transmitter provided by the utility model realizes intelligent temperature measurement, and can convert acquired temperature signals into standard industrial signals and communication signals, thereby bringing convenience for an upper computer to comprehensively adjust and control the field working condition.
Description
Technical field
The utility model relates to a kind of intelligent temperature transmitter, belongs to the temperature measurement technology field.
Background technology
Temperature transmitter is a kind of instrument that temperature variable is converted into the output of transmissible standardization industry signal.Be mainly used in the measurement and the control of industrial process temperature parameter.Temperature transmitter is made up of two parts usually: sensor and signal converter.Sensor mainly is an occasionally thermal resistance of thermoelectricity; Signal converter mainly is made up of measuring unit, signal Processing and converting unit.Because existing temperature transmitter can only become the conversion of signals of gathering the industrial signal of standard, and additional functions such as signal of communication can't be provided, and causes being not easy to host computer field working conditions is regulated and control comprehensively.
Summary of the invention
The utility model provides a kind of intelligent temperature transmitter, is used to solve the cabinet dress that can not be used for that existing temperature transmitter exists and uses, and the not high shortcoming of intelligent degree causes being not easy to the problem that host computer is regulated and control field working conditions comprehensively.
The purpose of the utility model realizes through following technical scheme:
A kind of intelligent temperature transmitter; Comprise prime amplifier, A/D converter, central processing unit, D/A converter and output module; Signal output part from temperature sensor is connected with the signal input part of said prime amplifier; The signal output part of said prime amplifier is connected with the signal input part of said A/D converter; The signal output part of said A/D converter is connected with the signal input part of said central processing unit, and the signal output part of said central processing unit is connected with the signal input part of said D/A converter, and the signal output part of said D/A converter is connected with the signal input part of said output module.
Can find out by the above-mentioned technical scheme that provides; The intelligent temperature transmitter that the utility model provides has been realized thermometric intelligent output; Can the conversion of signals of gathering be become industrial signal and the signal of communication etc. of standard, be convenient to host computer field working conditions is regulated and control comprehensively.
Description of drawings
The structural representation of the intelligent temperature transmitter that Fig. 1 provides for the embodiment of the utility model;
The connection principle synoptic diagram of the intelligent temperature transmitter that Fig. 2 provides for the embodiment of the utility model;
The profile synoptic diagram of the intelligent temperature transmitter that the embodiment of Fig. 3 the utility model provides;
The overall schematic of the intelligent temperature transmitter that comprises communication module, USB module and cold junction compensation module that Fig. 4 provides for the embodiment of the utility model.
Embodiment
This embodiment provides a kind of intelligent temperature transmitter; Prime amplifier as shown in Figure 11, A/D converter 2, central processing unit 3, D/A converter 4 and output module 5; Signal output part from temperature sensor is connected with the signal input part of prime amplifier 1; The signal output part of prime amplifier 1 is connected with the signal input part of A/D converter 2; The signal output part of A/D converter 2 is connected with the signal input part of central processing unit 3, and the signal output part of central processing unit 3 is connected with the signal input part of D/A converter 4, and the signal output part of D/A converter 4 is connected with the input end of output module 5.
Concrete; As shown in Figures 2 and 3 from behind the temperature data of temperature sensor collection site temperature signal being amplified through 1 pair of temperature signal of prime amplifier; Send central processing unit 3 to after converting temperature signal into digital signal through A/D converter 2 again; Central processing unit 3 is after the processes temperature signal, convert digital signal into simulating signal through D/A converter 4 after, output analog signal to host computer by output module 5.Wherein the output signal of output module 5 is 4～20mA, and contains the Hart agreement, can use PDA manual operator or PC to carry out configuration, the two-way communication of realization and host computer, networking etc.
Further, the intelligent temperature transmitter that this embodiment provides is as shown in Figure 4, can also comprise at least a in communication module 6, USB module 7 and the cold junction compensation module 8.Communication module 6 can carry out communication with agreements such as RS485, MODBUS, is used to make the user to pass through the scene temperature data that communication module 7 inquiries are gathered from temperature sensor.USB module 7 is used to make the user through USB interface the parameters of temperature transmitter device to be made amendment, and stores etc.Cold junction compensation module 8 is used to central processing unit 3 the cold junction compensation temperature signal is provided, and makes the processing of temperature data and transmission more accurate.In addition, this embodiment can also adopt four-wire system resistance input (comprising three-wire system); Output accuracy up to :≤0.2 ℃ or 0.08%; The resistance input value is wideer, can reach 2000 Ω; Full isolation technology: electrical isolation 2000VAC, antijamming capability is strong, and the occasion that is fit to various noisy complex working conditions is used.The prime amplifier 1 that comprises in the intelligent temperature transmitter that this embodiment provides, A/D converter 2, central processing unit 3, D/A converter 4, output module 5, communication module 6, USB module 7 and cold junction compensation module 8 can be arranged in the standard card rail sandwich type element, with the supporting use of 35mm guide rail.
The technical specification of the intelligent temperature transmitter that this embodiment provides is following:
1, output:
(1) output signal: 4～20mA stack Hart agreement;
(2) maximum load: power supply 7.5V/ output current 22mA;
(3) metering system: temperature-linearity, resistance-linearity, voltage-linearity;
(4) electrical isolation: 2000VAC;
(5) electric current restriction :≤22mA;
(6) response time :≤1s;
(7) saturation current: low side 3.8mA; High-end 20.5mA;
(8) alarm current: sensor damages or sensor opens circuit is 3.6mA or 22mA;
2, power supply:
Supply voltage: 7.5～45V.
3, environmental baseline:
Working temperature :-40～+ 85 ℃.
4, measuring accuracy :≤0.2 ℃ or 0.08%.
The intelligent temperature transmitter that adopts this embodiment to provide has been realized thermometric intellectuality, can the conversion of signals of gathering be become the industrial signal and the signal of communication of standard, is convenient to host computer field working conditions is regulated and control comprehensively.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (5)
1. intelligent temperature transmitter; Comprise prime amplifier, A/D converter, central processing unit, D/A converter and output module; It is characterized in that; Signal output part from temperature sensor is connected with the signal input part of said prime amplifier, and the signal output part of said prime amplifier is connected with the signal input part of said A/D converter, and the signal output part of said A/D converter is connected with the signal input part of said central processing unit; The signal output part of said central processing unit is connected with the signal input part of said D/A converter, and the signal output part of said D/A converter is connected with the signal input part of said output module.
2. intelligent temperature transmitter according to claim 1 is characterized in that, said intelligent temperature transmitter also comprises communication module, and the communication data I/O end of said communication module is connected with the communication data I/O end of said central processing unit.
3. intelligent temperature transmitter according to claim 1 is characterized in that, said intelligent temperature transmitter also comprises the USB module, and the usb data I/O end of said USB module is connected with the usb data I/O end of said central processing unit.
4. intelligent temperature transmitter according to claim 1 is characterized in that, said intelligent temperature transmitter also comprises the cold junction compensation module, and the signal output part of said cold junction compensation module is connected with the signal input part of said central processing unit.
5. according to any described intelligent temperature transmitter of claim 1 to 4; It is characterized in that; Said intelligent temperature transmitter also comprises standard card rail sandwich type element, and said prime amplifier, A/D converter, central processing unit, D/A converter and output module all are arranged in the said standard card rail sandwich type element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205083479U CN202382873U (en) | 2011-12-08 | 2011-12-08 | Intelligent temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205083479U CN202382873U (en) | 2011-12-08 | 2011-12-08 | Intelligent temperature transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382873U true CN202382873U (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205083479U Expired - Fee Related CN202382873U (en) | 2011-12-08 | 2011-12-08 | Intelligent temperature transmitter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202382873U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308201A (en) * | 2013-05-23 | 2013-09-18 | 苏州卫生职业技术学院 | Intelligent temperature measuring set |
| CN103471734A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Digital thermometer |
| CN104748881A (en) * | 2015-02-06 | 2015-07-01 | 安徽万瑞冷电科技有限公司 | Pt1000 temperature transmitter with wide power supply range |
| CN109269677A (en) * | 2018-11-26 | 2019-01-25 | 国网安徽省电力有限公司安庆供电公司 | A kind of temperature transmitter |
-
2011
- 2011-12-08 CN CN2011205083479U patent/CN202382873U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308201A (en) * | 2013-05-23 | 2013-09-18 | 苏州卫生职业技术学院 | Intelligent temperature measuring set |
| CN103471734A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Digital thermometer |
| CN104748881A (en) * | 2015-02-06 | 2015-07-01 | 安徽万瑞冷电科技有限公司 | Pt1000 temperature transmitter with wide power supply range |
| CN109269677A (en) * | 2018-11-26 | 2019-01-25 | 国网安徽省电力有限公司安庆供电公司 | A kind of temperature transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20141208 |
|
| EXPY | Termination of patent right or utility model |