CN203117809U - Temperature control device - Google Patents
Temperature control device Download PDFInfo
- Publication number
- CN203117809U CN203117809U CN 201320034621 CN201320034621U CN203117809U CN 203117809 U CN203117809 U CN 203117809U CN 201320034621 CN201320034621 CN 201320034621 CN 201320034621 U CN201320034621 U CN 201320034621U CN 203117809 U CN203117809 U CN 203117809U
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- CN
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- circuit
- temperature
- chip microcomputer
- communication interface
- attemperating unit
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Abstract
The utility model relates to a temperature control device, which comprises a temperature detection circuit and a single-chip microcomputer control circuit. The output signals of the temperature detection circuit are transmitted to the single-chip microcomputer control circuit through a comparator circuit. The output signals of the single-chip microcomputer control circuit are sent to an RS485 communication interface circuit and a drive circuit. When the ambient temperature is a little bit low, a heater is driven to heat the indoors after a single-chip microcomputer makes judgment. Meanwhile, data signals are transmitted to a control system through a 485 alarm bus. Real-time temperature information is transmitted in a networking way.
Description
Technical field
The utility model relates to the temperature control technology field, particularly be a kind of attemperating unit.
Background technology
Traditional temperature-controlled process mainly contains on-off mode and two kinds of method for position mutually, and on-off mode is cut off heater power source when temperature reaches controlling value, connects heater power source when being lower than the control temperature, and temperature-controlled precision is poor, temperature fluctuation is big; The phase place mode is to trigger phase place according to silicon controlled in height control each cycle of interchange of temperature, and its temperature-controlled precision is higher, but can produce radionoise.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of simple in structure, intelligent temperature control device that temperature-controlled precision is high is provided.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of attemperating unit, comprise temperature sensing circuit and single chip machine controlling circuit, the output signal of described temperature sensing circuit transfers to single chip machine controlling circuit through comparator circuit, and the output signal of described single chip machine controlling circuit sends to RS485 communication interface circuit and driving circuit.
Preferably, described temperature sensing circuit adopts transistor VT1 collecting temperature signal.
Preferably, described comparator circuit adopts voltage comparison amplifier IC3.
Preferably, described single chip machine controlling circuit adopts 89S52 single-chip microcomputer IC1.
Preferably, described RS485 communication interface circuit is connected to the computer industrial computer by SN75176 communication interface chip IC2.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when environment temperature was on the low side, the utility model drove well heater to indoor heating after judging by single-chip microcomputer, reach control system by 485 warning buses simultaneously, transmit real time temperature information by networking.
Description of drawings
Fig. 1 is frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of attemperating unit of the present utility model, comprise temperature sensing circuit 1 and single chip machine controlling circuit 2, the output signal of described temperature sensing circuit 1 transfers to single chip machine controlling circuit 2 through comparator circuit 11, and the output signal of described single chip machine controlling circuit 2 sends to RS485 communication interface circuit 21 and driving circuit 22.
Described temperature sensing circuit 1 adopts transistor VT1 collecting temperature signal, and the emitter junction voltage drop (VBE) of transistor VT1 changes along with the variation of environment temperature.Described comparator circuit 11 adopts voltage comparison amplifier IC3, when temperature raises, the conducting resistance of transistor VT1 diminishes, the voltage drop of its emitter junction also can reduce, the output voltage of the N1 of voltage comparison amplifier IC3 inside is reduced, and the output voltage of the inner N2 of voltage comparison amplifier IC3 can raise.
By potentiometer RP1～RP3, resistance R 3, R5, R8, voltage stabilizing diode VS and voltage comparison amplifier IC3 N4 form reference voltage circuit, for circuit provides reference voltage.Potentiometer RP3 can be used for setting the value of control temperature, and potentiometer RP2 is used for setting the maximum output voltage of potentiometer RP3, and the resistance of regulating RP1 can make voltage ratio than the in-phase input end voltage of the inner N2 of amplifier IC3.
Because the emitter junction of transistor VT1 can detect the variation of environment temperature.When temperature is lower than the temperature value of setting, the N3 output low level of voltage comparison amplifier IC3 inside, this signal is input to the 4th pin I/O end of 89S52 single-chip microcomputer IC1, after 89S52 single-chip microcomputer IC1 internal processes was judged, the 21st pin of 89S52 single-chip microcomputer IC1 output high level made triode VT2 conducting, relay J 1 adhesive, its contact J1-1 connects the heating bar power supply by transferring normally closed point normal battle to, is indoor heating.89S52 single-chip microcomputer IC1 sends control number in another road, form RS485 communication interface circuit 21 by the 1st, 2,3,4 pin of the 10th, 11,25 pin of 89S52 single-chip microcomputer IC1 and SN75176 communication interface chip IC2, R6 etc., after SN75176 communication interface chip IC2 decoding, by the RS485 of system bus to computer industrial computer data signal, the inner configuration software of computer industrial computer shows current indoor temperature status information, real data remote online monitoring.
When indoor temperature is elevated to the temperature that sets, the inner N3 of voltage comparison amplifier IC3 can export high level again, this signal is input to the 4th pin I/O end of 89S52 single-chip microcomputer IC1, after 89S52 single-chip microcomputer IC1 internal processes is judged, the 21st pin output low level of 89S52 single-chip microcomputer IC1 is ended triode VT2, and relay J 1 discharges, its contact J1-1 transfers normal battle to by normally closed point, cuts off the heating bar power supply and stops heating.89S52 single-chip microcomputer IC1 sends the driving command information again, after SN75176 communication interface chip IC2 decoding, to computer industrial computer data signal, the inner configuration software of computer industrial computer shows current indoor temperature status information, real data remote online monitoring by the RS485 of system bus.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (5)
1. attemperating unit, it is characterized in that: comprise temperature sensing circuit (1) and single chip machine controlling circuit (2), the output signal of described temperature sensing circuit (1) transfers to single chip machine controlling circuit (2) through comparator circuit (11), and the output signal of described single chip machine controlling circuit (2) sends to RS485 communication interface circuit (21) and driving circuit (22).
2. attemperating unit according to claim 1 is characterized in that: described temperature sensing circuit (1) employing transistor VT1 collecting temperature signal.
3. attemperating unit according to claim 1 and 2 is characterized in that: described comparator circuit (11) employing voltage comparison amplifier IC3.
4. attemperating unit according to claim 1 is characterized in that: described single chip machine controlling circuit (2) employing 89S52 single-chip microcomputer IC1.
5. attemperating unit according to claim 1, it is characterized in that: described RS485 communication interface circuit (21) is connected to the computer industrial computer by SN75176 communication interface chip IC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034621 CN203117809U (en) | 2013-01-17 | 2013-01-17 | Temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034621 CN203117809U (en) | 2013-01-17 | 2013-01-17 | Temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117809U true CN203117809U (en) | 2013-08-07 |
Family
ID=48898138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034621 Expired - Lifetime CN203117809U (en) | 2013-01-17 | 2013-01-17 | Temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117809U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183035A (en) * | 2015-08-10 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Industrial temperature acquisition control circuit |
| CN114840040A (en) * | 2022-04-20 | 2022-08-02 | 天津国科医工科技发展有限公司 | ESI source auxiliary air temperature control system based on controllable silicon |
-
2013
- 2013-01-17 CN CN 201320034621 patent/CN203117809U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105183035A (en) * | 2015-08-10 | 2015-12-23 | 芜湖瑞泰精密机械有限公司 | Industrial temperature acquisition control circuit |
| CN114840040A (en) * | 2022-04-20 | 2022-08-02 | 天津国科医工科技发展有限公司 | ESI source auxiliary air temperature control system based on controllable silicon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HAIMEN JIAMAXING FLAW DETECTION EQUIPMENT CO., LTD Free format text: FORMER OWNER: ZHANG AIPING Effective date: 20150304 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 362803 QUANZHOU, FUJIAN PROVINCE TO: 226134 NANTONG, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150304 Address after: 226134, Jiangsu Province, Haimen City, Nantong Province, the town of good fortune village six group 98 Patentee after: HAIMEN GAMMASTAR FLAW DETECTION EQUIPMENT CO.,LTD. Address before: Quangang District of Quanzhou City, Fujian Province, after 362803 long ago before the Zhen Feng Village No. 18 Patentee before: Zhang Aiping |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |