CN103776554A - Temperature data acquisition device - Google Patents
Temperature data acquisition device Download PDFInfo
- Publication number
- CN103776554A CN103776554A CN201210394506.6A CN201210394506A CN103776554A CN 103776554 A CN103776554 A CN 103776554A CN 201210394506 A CN201210394506 A CN 201210394506A CN 103776554 A CN103776554 A CN 103776554A
- Authority
- CN
- China
- Prior art keywords
- signal input
- signal
- data acquisition
- signal output
- input part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a temperature data acquisition device which comprises a plurality of temperature sensors, direct-current bridges, signal amplification circuits, a multi-path analog switch, an A/D converter, a single chip microcontroller and a data acquisition module, wherein the signal output ends of the temperature sensors are respectively connected with the signal input ends of the direct-current bridges, the signal output ends of the direct-current bridges are connected with the signal input ends of the corresponding signal amplification circuits, the signal output ends of the signal amplification circuits are connected with the signal input ends of the multi-path analog switch, the signal output end of the multi-path analog switch is connected with the signal input end of the A/D converter, the A/D converter is connected with the signal input end of the data acquisition module, the signal output end of the data acquisition module is connected with the signal input end of the single chip microcontroller, and the signal output end of the single chip microcontroller is connected with the signal input end of the multi-path analog switch. Three types of temperature measurement can be realized. The needs of different measurement ranges, different measurement accuracies and different occasions can be met.
Description
Technical field
The present invention relates to a kind of temperature data acquisition device, particularly relate to a kind of temperature data acquisition device that can meet different measuring scope, different measuring precision.
Background technology
In existing market, the measurement range of most of Temperature samplers, metering system and measuring accuracy are just fixing in the time dispatching from the factory.Metering system is single, measurement range is fixed, sensing mode also can only adapt to certain occasion.Therefore can not well be suitable for the occasion of some many metering systems and measurement range.Moreover their process of measurement is fixing with the database of tabling look-up, and has the occasion of specific (special) requirements not to be suitable for for some.
Summary of the invention
The object of the invention is to provide in order to address the above problem a kind of temperature data acquisition device that can meet different measuring scope, different measuring precision.
The present invention is achieved by the following technical solutions:
A kind of temperature data acquisition device, comprise multiple temperature sensors, direct current bridge, signal amplification circuit, multiway analog switch, A/D converter, single-chip microcomputer, data acquisition module, light-emitting diode display and storer, the signal output part of multiple described temperature sensors connects from the signal input part of different direct current bridge respectively, the signal output part of each described direct current bridge connects with the signal input part of corresponding signal amplification circuit, the signal output part of described signal amplification circuit is connected with the signal input part of described multiway analog switch, the signal output part of described multiway analog switch is connected with the signal input part of described A/D converter, described A/D converter is connected with the signal input part of described data acquisition module, the signal output part of described data acquisition module is connected with the signal input part of described single-chip microcomputer, the signal output part of described single-chip microcomputer and the signal input part of described multiway analog switch, number letter input end of the signal input part of described LED single-chip microcomputer and described storer is connected.
Because different sensors has different output quantities, still finally all need to be converted to the magnitude of voltage of 0～10V, thereby could meet the conversion requirement of A/D converter.Therefore each sensor needs different conversion and amplifying circuit.Voltage after conversion is selected to deliver to same A/D converter through multiway analog switch and is changed, and data acquisition module to single-chip microcomputer, then carries out the data transmission after conversion data processing and shows output through single-chip microcomputer.
Further, described temperature sensor is thermocouple temperature sensor, thermal resistance temperature sensor or PN junction temperature sensor.
The invention has the beneficial effects as follows:
The present invention can realize the temperature survey of 3 kinds of modes.Can meet the needs of different measuring scope, different measuring precision and different occasions.Adopt Single-chip Controlling to make the control of whole Temperature sampler more accurate, adopt 12ADC analog to digital converter, measuring accuracy is greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of temperature data acquisition device of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail:
As shown in Figure 1, temperature data acquisition device of the present invention, comprise multiple temperature sensors, direct current bridge, signal amplification circuit, multiway analog switch, A/D converter, single-chip microcomputer, data acquisition module, light-emitting diode display and storer, the signal output part of multiple described temperature sensors connects from the signal input part of different direct current bridge respectively, the signal output part of each described direct current bridge connects with the signal input part of corresponding signal amplification circuit, the signal output part of described signal amplification circuit is connected with the signal input part of described multiway analog switch, the signal output part of described multiway analog switch is connected with the signal input part of described A/D converter, described A/D converter is connected with the signal input part of described data acquisition module, the signal output part of described data acquisition module is connected with the signal input part of described single-chip microcomputer, the signal output part of described single-chip microcomputer and the signal input part of described multiway analog switch, number letter input end of the signal input part of described LED single-chip microcomputer and described storer is connected.
Because different sensors has different output quantities, still finally all need to be converted to the magnitude of voltage of 0～10V, thereby could meet the conversion requirement of A/D converter.Therefore each sensor needs different conversion and amplifying circuit.Voltage after conversion is selected to deliver to same A/D converter through multiway analog switch and is changed, and data acquisition module to single-chip microcomputer, then carries out the data transmission after conversion data processing and shows output through single-chip microcomputer.
In the present embodiment, adopt 3 temperature sensors, the first temperature sensor adopts thermocouple temperature sensor, and the second temperature sensor adopts thermal resistance temperature sensor, and three-temperature sensor adopts PN junction temperature sensor.What PN junction temperature sensor varied with temperature generation due to PN junction is a voltage signal, 1 ℃ of the every rising of temperature, the forward conduction voltage drop of PN junction 1 mV that declines.But requiring output voltage in the time of 0 ℃ is 0 V, therefore PN junction must be connected into single armed unbalanced dc bridge.And output voltage is amplified to 0～10 V scope and send A/D change-over circuit.The measurement range of PN junction temperature sensor is 20～100 ℃.What thermal resistance temperature sensor varied with temperature generation is a resistance signal, and in the time that temperature raises, resistance value increases.Therefore thermal resistance must be connected into single armed direct current bridge, its change in resistance is converted to voltage change signal.0～10 V scope that again this voltage signal is amplified to is sent A/D change-over circuit.The measurement range of thermal resistance temperature sensor is 0～800 ℃.The output of thermocouple temperature sensor is a temperature variant voltage signal, and it must add that cold junction compensation circuit could normal work, and the scope that its output also will be converted to 0～10 V is sent A/D change-over circuit.The measurement range of thermocouple temperature sensor is 0～1 000 ℃.
Claims (2)
1. a temperature data acquisition device, it is characterized in that: comprise multiple temperature sensors, direct current bridge, signal amplification circuit, multiway analog switch, A/D converter, single-chip microcomputer, data acquisition module, light-emitting diode display and storer, the signal output part of multiple described temperature sensors connects from the signal input part of different direct current bridge respectively, the signal output part of each described direct current bridge connects with the signal input part of corresponding signal amplification circuit, the signal output part of described signal amplification circuit is connected with the signal input part of described multiway analog switch, the signal output part of described multiway analog switch is connected with the signal input part of described A/D converter, described A/D converter is connected with the signal input part of described data acquisition module, the signal output part of described data acquisition module is connected with the signal input part of described single-chip microcomputer, the signal output part of described single-chip microcomputer and the signal input part of described multiway analog switch, number letter input end of the signal input part of described LED single-chip microcomputer and described storer is connected.
2. temperature data acquisition device according to claim 1, is characterized in that: described temperature sensor is thermocouple temperature sensor, thermal resistance temperature sensor or PN junction temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394506.6A CN103776554A (en) | 2012-10-17 | 2012-10-17 | Temperature data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394506.6A CN103776554A (en) | 2012-10-17 | 2012-10-17 | Temperature data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103776554A true CN103776554A (en) | 2014-05-07 |
Family
ID=50569068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210394506.6A Pending CN103776554A (en) | 2012-10-17 | 2012-10-17 | Temperature data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103776554A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359577A (en) * | 2014-12-09 | 2015-02-18 | 南京化工职业技术学院 | Thermocouple temperature inspecting instrument |
| CN104442236A (en) * | 2014-11-27 | 2015-03-25 | 张金茂 | Online temperature testing device for automobile tire |
| CN109547022A (en) * | 2018-10-31 | 2019-03-29 | 杭州领乘信息技术有限公司 | A kind of acquisition range is wide and temperature collection circuit with high accuracy and method |
| CN109655175A (en) * | 2019-02-02 | 2019-04-19 | 北京理工大学 | A kind of control of high-precision multi-path temperature and recorder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135775Y (en) * | 1992-07-22 | 1993-06-09 | 浙江大学 | Processing device for experiment data of cutting temp. |
| JPH07146188A (en) * | 1993-11-25 | 1995-06-06 | Nec Corp | Device and method for detecting temperature abnormality in multi-chip module |
| CN2438109Y (en) * | 2000-04-27 | 2001-07-04 | 吉林工学院 | Granary temp. testing signing-in device |
| US6480127B1 (en) * | 2001-09-27 | 2002-11-12 | National Semiconductor Corporation | Input sub-ranging converter system for sampling semiconductor temperature sensors |
| CN101592527A (en) * | 2009-04-09 | 2009-12-02 | 上海微电子装备有限公司 | Multichannel temperature acquisition system |
| CN201540175U (en) * | 2009-11-20 | 2010-08-04 | 北京遥测技术研究所 | Multi-channel digital temperature converter |
| CN201556274U (en) * | 2009-09-11 | 2010-08-18 | 常州齐泰电气制造有限公司 | Distribution cabinet temperature alarm |
| CN102297730A (en) * | 2011-05-23 | 2011-12-28 | 国网电力科学研究院 | Multi-channel general temperature measurement module |
| CN202974477U (en) * | 2012-10-17 | 2013-06-05 | 成都龙冠科技实业有限公司 | Temperature data acquisition device |
-
2012
- 2012-10-17 CN CN201210394506.6A patent/CN103776554A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135775Y (en) * | 1992-07-22 | 1993-06-09 | 浙江大学 | Processing device for experiment data of cutting temp. |
| JPH07146188A (en) * | 1993-11-25 | 1995-06-06 | Nec Corp | Device and method for detecting temperature abnormality in multi-chip module |
| CN2438109Y (en) * | 2000-04-27 | 2001-07-04 | 吉林工学院 | Granary temp. testing signing-in device |
| US6480127B1 (en) * | 2001-09-27 | 2002-11-12 | National Semiconductor Corporation | Input sub-ranging converter system for sampling semiconductor temperature sensors |
| CN101592527A (en) * | 2009-04-09 | 2009-12-02 | 上海微电子装备有限公司 | Multichannel temperature acquisition system |
| CN201556274U (en) * | 2009-09-11 | 2010-08-18 | 常州齐泰电气制造有限公司 | Distribution cabinet temperature alarm |
| CN201540175U (en) * | 2009-11-20 | 2010-08-04 | 北京遥测技术研究所 | Multi-channel digital temperature converter |
| CN102297730A (en) * | 2011-05-23 | 2011-12-28 | 国网电力科学研究院 | Multi-channel general temperature measurement module |
| CN202974477U (en) * | 2012-10-17 | 2013-06-05 | 成都龙冠科技实业有限公司 | Temperature data acquisition device |
Non-Patent Citations (1)
| Title |
|---|
| 孟德军等: "基于AW60的温度采集系统的设计与实现", 《苏州大学学报（工科版）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442236A (en) * | 2014-11-27 | 2015-03-25 | 张金茂 | Online temperature testing device for automobile tire |
| CN104359577A (en) * | 2014-12-09 | 2015-02-18 | 南京化工职业技术学院 | Thermocouple temperature inspecting instrument |
| CN109547022A (en) * | 2018-10-31 | 2019-03-29 | 杭州领乘信息技术有限公司 | A kind of acquisition range is wide and temperature collection circuit with high accuracy and method |
| CN109655175A (en) * | 2019-02-02 | 2019-04-19 | 北京理工大学 | A kind of control of high-precision multi-path temperature and recorder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202974477U (en) | Temperature data acquisition device | |
| CN101706346B (en) | Method for compensating for nonlinear temperature drift of measurement of intelligent force sensor | |
| CN101872193B (en) | Multifunctional measurement and control module based on field bus | |
| CN103776554A (en) | Temperature data acquisition device | |
| CN204064410U (en) | A kind of electronic scales based on resistance strain gage | |
| CN202928712U (en) | Fully-functional temperature transmitter | |
| CN203241165U (en) | Thermal resistor temperature measurement circuit based on three-wire system | |
| CN202329848U (en) | Temperature measuring device | |
| CN203785709U (en) | Multi-sensor data concentration acquisition system | |
| CN202599559U (en) | Multi-channel thermal resistance switching circuit in thermal resistance measurement system | |
| CN202582775U (en) | Temperature measuring circuit | |
| CN201917836U (en) | Temperature control device based on ultra-low-temperature environment operation | |
| CN202382877U (en) | Intrinsic safety temperature routing inspection device for mine | |
| CN204008934U (en) | A kind of detection of electrical leakage and warning circuit | |
| CN102901579A (en) | High-reliability, low-power-consumption and light-weight temperature acquiring system of space camera | |
| CN102768096B (en) | Pressure measuring device with temperature drift compensation function | |
| CN202092805U (en) | Signal acquisition circuit of force sensor | |
| CN203642965U (en) | Multi-interface temperature and humidity data collector | |
| CN104515611A (en) | Temperature sensing circuit and temperature sensor | |
| CN203732181U (en) | Thermocouple detecting device based on computer control | |
| CN201795876U (en) | Digital thermometer | |
| CN103852193A (en) | High-performance low-cost temperature detection method for wireless charger | |
| CN202024830U (en) | High-precision temperature sensor capable of measuring solar cell panel | |
| CN105527036A (en) | Intelligent temperature transmitter based on CMC (code for magnetic characters) | |
| CN113588112B (en) | High-power diesel engine temperature acquisition module and use method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |