CN201748983U - Integrated signal intelligent temperature transmitter - Google Patents
Integrated signal intelligent temperature transmitter Download PDFInfo
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- CN201748983U CN201748983U CN2010202353414U CN201020235341U CN201748983U CN 201748983 U CN201748983 U CN 201748983U CN 2010202353414 U CN2010202353414 U CN 2010202353414U CN 201020235341 U CN201020235341 U CN 201020235341U CN 201748983 U CN201748983 U CN 201748983U
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Abstract
The utility model relates to an integrated signal intelligent temperature transmitter, which is used for measuring the temperature and comprises a power supply circuit (1), a thermal resistance signal acquisition circuit (2), a thermocouple signal acquisition circuit (3), an ambient temperature acquisition circuit (4), a primary signal filter circuit (5), a signal switching circuit (6), an analog to digital (A/D) conversion circuit (7), a reference circuit (8), a microprocessor central processing unit (CPU) (9), a signal amplifying circuit (13) and a secondary signal filter circuit (14). The integrated signal intelligent temperature transmitter has multiple signal acquisition modes, high measuring precision and multifunction.
Description
(1) technical field
The utility model relates to a kind of integrated signal intelligent temperature transmitter, is used for the measurement to temperature.
(2) background technology
At present, conventional temperature transmitter only is equipped with single temperature signal collection mode, when needing under the varying environment to use different acquisition modes to carry out selection of temperature signal, can only change another set of temperature transmitter, has increased user's practical cost greatly; And traditional temperature transmitter uses simulating signal more, thereby in the course of the work, produces deviation because of external interference easily; Simultaneously, there is the temperature drift phenomenon in traditional temperature transmitter, has brought great interference to measuring accuracy.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of integrated signal intelligent temperature transmitter that has multiple signals collecting mode, measuring accuracy height and have multiple function is provided.
The purpose of this utility model is achieved in that a kind of integrated signal intelligent temperature transmitter, described transmitter includes power circuit, thermal resistance signal Acquisition Circuit, thermocouple signal acquisition circuit, temperature collection circuit, one stage signal filtering circuit, signal switching circuit, A/D change-over circuit, reference circuit, microprocessor CPU, signal amplification circuit and second signal filtering circuit
Described power circuit adopts switching power circuit, output+5～-5V, 15V～GND1 and 5V～GND2 three road voltages, wherein+5～-5V voltage links to each other with the power input mouth of thermal resistance signal Acquisition Circuit, thermocouple signal acquisition circuit, temperature collection circuit, microprocessor CPU and display circuit, it powered; 15V～GND1 voltage links to each other with the power input mouth of transmission circuit, and it is powered; 5V～GND2 voltage links to each other with the power input mouth of 485 communicating circuits, and it is powered;
The internal reference voltage output end mouth of described microprocessor CPU links to each other with the voltage input end mouth of reference circuit, reference circuit is made of a voltage follower circuit, the voltage output end of described reference circuit links to each other with the signal input part of thermal resistance signal Acquisition Circuit with the temperature collection circuit, provides a stable constant voltage that resistance and temperature signal and ambient temperature signal are converted to the voltage signal that is fit to the acceptance of A/D change-over circuit to thermal resistance signal Acquisition Circuit and ambient temperature signal Acquisition Circuit;
Described thermal resistance signal Acquisition Circuit, thermocouple signal acquisition circuit and temperature collection circuit respectively with the simulating signal that collects through one stage signal filtering circuit input signal commutation circuit, the control port of described signal switching circuit links to each other with the control port of microprocessor CPU, described signal switching circuit inputs to the A/D change-over circuit with simulating signal through signal amplification circuit and second signal filtering circuit, and described A/D change-over circuit will input to microprocessor CPU by the digital signal that analog signal conversion becomes.
The utility model integrated signal intelligent temperature transmitter, described device includes 485 communicating circuits, display circuit and transmission circuit, the PORT COM of described microprocessor CPU links to each other with 485 communicating circuits, and described 485 communicating circuits are made of optical coupling isolation circuit and the RS485 conversion chip that is attached thereto;
The input/output port of described microprocessor CPU links to each other with display circuit, described display circuit includes display button decoding chip TM1629B, LED charactron display circuit and key circuit, the input/output port of described display button decoding chip TM1629B links to each other with the input/output port of microprocessor CPU, the demonstration control port of described display button decoding chip TM1629B links to each other with LED charactron display circuit, and the button control port of described LED charactron display circuit links to each other with key circuit;
The pwm signal output port of described microprocessor CPU links to each other with transmission circuit, and described transmission circuit is made of an optical coupling isolation circuit, the output after the optical coupling isolation circuit conversion of described pwm signal.
The utility model integrated signal intelligent temperature transmitter, described microprocessor CPU adopts 8 AVR microprocessor ATmega16; Described A/D change-over circuit adopts A/D converter MCP3421; Described signal switching circuit adopts electronic switch HEF4051.
The beneficial effects of the utility model are:
(1) is provided with thermal resistance signal Acquisition Circuit and thermocouple signal acquisition circuit, and can has more environmental requirement in use, select concrete which kind of Acquisition Circuit that adopts of institute easily by signal switching circuit.
(2) adopting the A/D change-over circuit is digital signal with analog signal conversion, makes it have the better resisting interference ability; Simultaneously, utilize reference circuit to provide reference voltage to thermal resistance signal Acquisition Circuit and thermocouple signal acquisition circuit, entering provides the precision of measuring.
(3) add the temperature collection circuit, ambient temperature information is gathered, help CPU temperature drift is compensated.
(4) the utility model device has connected 485 communicating circuits 10, display circuit 11 and transmission circuit 12 in the CPU periphery, and the person of being easy to use operates on it and controls, and makes the utility model device have multifunctional usage.
(4) description of drawings
Fig. 1 is the utility model electrical block diagram.
Fig. 2 is the utility model circuit construction of electric power synoptic diagram.
Among the figure:
(5) embodiment
Referring to Fig. 1 and Fig. 2, the utility model relates to a kind of integrated signal intelligent temperature transmitter, include power circuit 1, thermal resistance signal Acquisition Circuit 2, thermocouple signal acquisition circuit 3, temperature collection circuit 4, one stage signal filtering circuit 5, signal switching circuit 6, A/D change-over circuit 7, reference circuit 8, microprocessor CPU 9,485 communicating circuits 10, display circuit 11, transmission circuit 12, signal amplification circuit 13 and second signal filtering circuit 14
Referring to Fig. 2, described power circuit 1 adopts switching power circuit, output+5～-5V, 15V～GND1 and 5V～GND2 three road voltages, wherein+5～-5V voltage links to each other with the power input mouth of thermal resistance signal Acquisition Circuit 2, thermocouple signal acquisition circuit 3, temperature collection circuit 4, microprocessor CPU 9 and display circuit 11, it powered; 15V～GND1 voltage links to each other with the power input mouth of transmission circuit 12, and it is powered; 5V～GND2 voltage links to each other with the power input mouth of 485 communicating circuits 10, and it is powered;
The internal reference voltage output end mouth of described microprocessor CPU 9 links to each other with the voltage input end mouth of reference circuit 8, reference circuit 8 is made of a voltage follower circuit, the voltage output end of described reference circuit 8 links to each other with the signal input part of thermal resistance signal Acquisition Circuit 2 with temperature collection circuit 4, provides a stable constant voltage that resistance and temperature signal and ambient temperature signal are converted to the voltage signal that is fit to 7 acceptance of A/D change-over circuit to thermal resistance signal Acquisition Circuit 2 and ambient temperature signal Acquisition Circuit 4;
Described thermal resistance signal Acquisition Circuit 2, thermocouple signal acquisition circuit 3 and temperature collection circuit 4 respectively with the simulating signal that collects through one stage signal filtering circuit 5 input signal commutation circuits 6, the control port of described signal switching circuit 6 links to each other with the control port of microprocessor CPU 9, described signal switching circuit 6 inputs to A/D change-over circuit 7 with simulating signal through signal amplification circuit 13 and second signal filtering circuit 14, and described A/D change-over circuit 7 will be inputed to microprocessor CPU 9 by the digital signal that analog signal conversion becomes;
The PORT COM of described microprocessor CPU 9 links to each other with 485 communicating circuits 10, and described 485 communicating circuits 10 are made of optical coupling isolation circuit and the RS485 conversion chip that is attached thereto;
The input/output port of described microprocessor CPU 9 links to each other with display circuit 11, described display circuit 11 includes display button decoding chip TM1629B, LED charactron display circuit and key circuit, the input/output port of described display button decoding chip TM1629B links to each other with the input/output port of microprocessor CPU 9, the demonstration control port of described display button decoding chip TM1629B links to each other with LED charactron display circuit, and the button control port of described LED charactron display circuit links to each other with key circuit;
The pwm signal output port of described microprocessor CPU 9 links to each other with transmission circuit 12, and described transmission circuit 12 is made of an optical coupling isolation circuit, the output after the optical coupling isolation circuit conversion of described pwm signal.
Claims (3)
1. integrated signal intelligent temperature transmitter, it is characterized in that: described transmitter includes power circuit (1), thermal resistance signal Acquisition Circuit (2), thermocouple signal acquisition circuit (3), temperature collection circuit (4), one stage signal filtering circuit (5), signal switching circuit (6), A/D change-over circuit (7), reference circuit (8), microprocessor CPU (9), signal amplification circuit (13) and second signal filtering circuit (14)
Described power circuit (1) adopts switching power circuit, output+5～-5V, 15V～GND1 and 5V～GND2 three road voltages, wherein+5～-5V voltage links to each other with thermal resistance signal Acquisition Circuit (2), thermocouple signal acquisition circuit (3), temperature collection circuit (4), microprocessor CPU (9) and the power input mouth of display circuit (11), it powered; 15V～GND1 voltage links to each other with the power input mouth of transmission circuit (12), and it is powered; 5V～GND2 voltage links to each other with the power input mouth of 485 communicating circuits (10), and it is powered;
The internal reference voltage output end mouth of described microprocessor CPU (9) links to each other with the voltage input end mouth of reference circuit (8), reference circuit (8) is made of a voltage follower circuit, the voltage output end of described reference circuit (8) links to each other with the signal input part of thermal resistance signal Acquisition Circuit (2) with temperature collection circuit (4), provides a stable constant voltage that resistance and temperature signal and ambient temperature signal are converted to the voltage signal that is fit to A/D change-over circuit (7) acceptance to thermal resistance signal Acquisition Circuit (2) and ambient temperature signal Acquisition Circuit (4);
Described thermal resistance signal Acquisition Circuit (2), thermocouple signal acquisition circuit (3) and temperature collection circuit (4) respectively with the simulating signal that collects through one stage signal filtering circuit (5) input signal commutation circuit (6), the control port of described signal switching circuit (6) links to each other with the control port of microprocessor CPU (9), described signal switching circuit (6) inputs to A/D change-over circuit (7) with simulating signal through signal amplification circuit (13) and second signal filtering circuit (14), and described A/D change-over circuit (7) will be inputed to microprocessor CPU (9) by the digital signal that analog signal conversion becomes.
2. a kind of according to claim 1 integrated signal intelligent temperature transmitter, it is characterized in that: described device includes 485 communicating circuits (10), display circuit (11) and transmission circuit (12), the PORT COM of described microprocessor CPU (9) links to each other with 485 communicating circuits (10), and described 485 communicating circuits (10) are made of optical coupling isolation circuit and the RS485 conversion chip that is attached thereto;
The input/output port of described microprocessor CPU (9) links to each other with display circuit (11), described display circuit (11) includes display button decoding chip TM1629B, LED charactron display circuit and key circuit, the input/output port of described display button decoding chip TM1629B links to each other with the input/output port of microprocessor CPU (9), the demonstration control port of described display button decoding chip TM1629B links to each other with LED charactron display circuit, and the button control port of described LED charactron display circuit links to each other with key circuit;
The pwm signal output port of described microprocessor CPU (9) links to each other with transmission circuit (12), and described transmission circuit (12) is made of an optical coupling isolation circuit, the output after the optical coupling isolation circuit conversion of described pwm signal.
3. a kind of as claimed in claim 1 or 2 integrated signal intelligent temperature transmitter is characterized in that: described microprocessor CPU (9) adopts 8 AVR microprocessor ATmega16; Described A/D change-over circuit (7) adopts A/D converter MCP3421; Described signal switching circuit (6) adopts electronic switch HEF4051.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202353414U CN201748983U (en) | 2010-06-21 | 2010-06-21 | Integrated signal intelligent temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202353414U CN201748983U (en) | 2010-06-21 | 2010-06-21 | Integrated signal intelligent temperature transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN201748983U true CN201748983U (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202353414U Expired - Fee Related CN201748983U (en) | 2010-06-21 | 2010-06-21 | Integrated signal intelligent temperature transmitter |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288833A (en) * | 2011-08-11 | 2011-12-21 | 北京电子工程总体研究所 | Priming system automatic detection device |
| CN103400493A (en) * | 2013-07-26 | 2013-11-20 | 天津成科自动化工程技术有限公司 | Wired temperature measuring system |
| CN104501992A (en) * | 2014-12-11 | 2015-04-08 | 无锡市锡容电力电器有限公司 | Reactor temperature-monitoring device for reactive compensation device |
| CN105094025A (en) * | 2014-04-30 | 2015-11-25 | 台达电子企业管理（上海）有限公司 | Transmitter and monitoring system thereof |
| CN105429622A (en) * | 2015-11-10 | 2016-03-23 | 蚌埠天光传感器有限公司 | Multi-channel anti-interference transmitter |
| CN106092352A (en) * | 2016-06-03 | 2016-11-09 | 珠海格力电器股份有限公司 | A kind of temperature collecting device and method |
| CN106384498A (en) * | 2016-11-18 | 2017-02-08 | 广州精秀热工设备有限公司 | Transmitter for converting dichlorodifluoromethane saturation pressure into saturation temperature |
| CN107478349A (en) * | 2017-08-11 | 2017-12-15 | 河南天通电力有限公司 | Temperature polling instrument |
| CN108180939A (en) * | 2017-12-26 | 2018-06-19 | 中国航发四川燃气涡轮研究院 | A kind of multifunctional data acquisition card and measuring method |
| CN108981944A (en) * | 2018-08-03 | 2018-12-11 | 安徽银汉机电科技有限公司 | Digital temperature switching controller |
| CN109554854A (en) * | 2018-12-24 | 2019-04-02 | 浙江众邦机电科技有限公司 | A kind of sewing machine operation panel with sensor signal processing function |
| CN110114638A (en) * | 2017-03-31 | 2019-08-09 | 三菱电机株式会社 | Simulation input unit and reference voltage stabilization circuit |
| CN110514316A (en) * | 2019-09-02 | 2019-11-29 | 武汉松野智能仪表有限公司 | A kind of intelligent digital temperature transmitter circuit |
-
2010
- 2010-06-21 CN CN2010202353414U patent/CN201748983U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288833A (en) * | 2011-08-11 | 2011-12-21 | 北京电子工程总体研究所 | Priming system automatic detection device |
| CN103400493A (en) * | 2013-07-26 | 2013-11-20 | 天津成科自动化工程技术有限公司 | Wired temperature measuring system |
| CN103400493B (en) * | 2013-07-26 | 2016-08-17 | 天津成科自动化工程技术有限公司 | Wired temp measuring system |
| US9719802B2 (en) | 2014-04-30 | 2017-08-01 | Delta Electronics (Shanghai) Co., Ltd | Transmitter and monitoring system using the same |
| CN105094025A (en) * | 2014-04-30 | 2015-11-25 | 台达电子企业管理（上海）有限公司 | Transmitter and monitoring system thereof |
| CN105094025B (en) * | 2014-04-30 | 2018-03-20 | 台达电子企业管理（上海）有限公司 | Transmitter and its monitoring system |
| CN104501992A (en) * | 2014-12-11 | 2015-04-08 | 无锡市锡容电力电器有限公司 | Reactor temperature-monitoring device for reactive compensation device |
| CN105429622A (en) * | 2015-11-10 | 2016-03-23 | 蚌埠天光传感器有限公司 | Multi-channel anti-interference transmitter |
| CN106092352A (en) * | 2016-06-03 | 2016-11-09 | 珠海格力电器股份有限公司 | A kind of temperature collecting device and method |
| CN106384498A (en) * | 2016-11-18 | 2017-02-08 | 广州精秀热工设备有限公司 | Transmitter for converting dichlorodifluoromethane saturation pressure into saturation temperature |
| CN110114638A (en) * | 2017-03-31 | 2019-08-09 | 三菱电机株式会社 | Simulation input unit and reference voltage stabilization circuit |
| CN107478349A (en) * | 2017-08-11 | 2017-12-15 | 河南天通电力有限公司 | Temperature polling instrument |
| CN108180939A (en) * | 2017-12-26 | 2018-06-19 | 中国航发四川燃气涡轮研究院 | A kind of multifunctional data acquisition card and measuring method |
| CN108180939B (en) * | 2017-12-26 | 2020-09-22 | 中国航发四川燃气涡轮研究院 | Multifunctional data acquisition card and measuring method |
| CN108981944A (en) * | 2018-08-03 | 2018-12-11 | 安徽银汉机电科技有限公司 | Digital temperature switching controller |
| CN109554854A (en) * | 2018-12-24 | 2019-04-02 | 浙江众邦机电科技有限公司 | A kind of sewing machine operation panel with sensor signal processing function |
| CN110514316A (en) * | 2019-09-02 | 2019-11-29 | 武汉松野智能仪表有限公司 | A kind of intelligent digital temperature transmitter circuit |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110216 Termination date: 20160621 |
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| CF01 | Termination of patent right due to non-payment of annual fee |