CN203643868U - Water temperature regulating circuit - Google Patents
Water temperature regulating circuit Download PDFInfo
- Publication number
- CN203643868U CN203643868U CN201420020996.8U CN201420020996U CN203643868U CN 203643868 U CN203643868 U CN 203643868U CN 201420020996 U CN201420020996 U CN 201420020996U CN 203643868 U CN203643868 U CN 203643868U
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- water temperature
- upper limit
- lower limit
- chip microcomputer
- regulating circuit
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Abstract
The utility model discloses a water temperature regulating circuit. The water temperature regulating circuit includes a temperature sensor, a single chip microcomputer, a water temperature upper limit resistor, a water temperature lower limit resistor and a heating device; a first analog comparator and a second analog comparator are arranged inside the single chip microcomputer; the water temperature upper limit resistor and the water temperature lower limit resistor are connected in parallel with output ends of the temperature sensor; the water temperature upper limit resistor is connected with the input end of the first analog comparator; the water temperature lower limit resistor is connected with the input end of the second analog comparator; and output ends of the single chip microcomputer are connected with the heating device, a water temperature upper limit alarm indicating lamp and a water temperature lower limit alarm indicating lamp. According to the water temperature regulating circuit of the utility model, the comparators of the single chip microcomputer itself are utilized, and therefore, water temperature can be maintained constant with only a single temperature sensor adopted. Thus, the water temperature regulating circuit has the advantage of simple and reliable structure.
Description
Technical field
The utility model relates to water temperature control detection field, and a kind of water temperature regulating circuit is specifically set.
Background technology
Controlling water temperature is people's modal technological means in life and production, for water temperature being maintained to the scope needing, just need to ensure the measure such as detection and temperature compensation lasting to water temperature, under many circumstances, the simulating signal that we detect only has a road, but water temperature testing conditions generally has ceiling temperature and lower limit temperature or other condition temperature, we just need to convert multiple relatively electric currents and meet relatively needs, are therefore commonly used to detect the comparatively complexity of circuit of water temperature.
Utility model content
The purpose of this utility model provide a kind of simple in structure, can maintain the temperature sensing circuit of water temperature in required scope.
In order to address the above problem, the scheme the utility model proposes is: water temperature regulating circuit, comprise temperature sensor, single-chip microcomputer, water temperature upper limit resistance, water temperature lower limit resistance and heating arrangement, described single-chip microcomputer inside is with the first analog comparator and the second analog comparator, described water temperature upper limit resistance, water temperature lower limit resistance is connected in parallel on temperature sensor output terminal, described water temperature upper limit resistance is connected with the first analog comparator input end, water temperature lower limit resistance is connected with the second analog comparator input end, the output terminal of described single-chip microcomputer is connected with described heating arrangement, water temperature upper limit alarm pilot lamp and water temperature lower limit alarm lamp.
Temperature sensor changes water temperature by the variation of current value and carrys out corresponding performance, owing to only using a temperature sensor to detect water temperature lower limit and the water temperature upper limit, by water temperature upper limit resistance and water temperature lower limit resistance, the output current of sensor is shunted, make to be connected with the fundamental current of water temperature upper limit resistance one road electric current lower than single-chip microcomputer inside, be connected with the fundamental current of water temperature lower limit resistance Yi road electric current higher than single-chip microcomputer inside, in the time that temperature sensor detects water temperature lower than lower limit temperature, corresponding the reducing of electric current of temperature sensor, make current value in the second analog comparator lower than fundamental current, now lighting water temperature lower limit alarm lamp by single-chip microcomputer points out, control heating arrangement work heats simultaneously, otherwise, if water temperature over-high makes the current value that enters the first simulator higher than fundamental current, now will light upper limit alarm pilot lamp, and heating-stopping apparatus maintains within the required range water temperature.
Using single temperature sensor to carry out measuring shunt also has a benefit to be, can carry out self-inspection side to circuit, situation about simultaneously lighting if there is the first and second warning circuits, there is short circuit phenomenon in the road that the place of water temperature upper limit resistance in divided circuit is described, can remind in time user to keep in repair metering circuit.
Further, in order to be observed current temperature, described temperature sensor output terminal is connected with single-chip microcomputer input end by check and correction potentiometer, and the output terminal of single-chip microcomputer is connected with LCD display, convert actual temperature is presented in LCD display by the multiple in check and correction potentiometer and single-chip microcomputer, be convenient to people and observe.
Further, in order to be suitable for the needs of different water temperature range, on the major loop at described water temperature upper limit resistance and water temperature lower limit resistance place, be connected with scope potentiometer; In the time being multiplied the temperature of water temperature, can, directly by scope potentiometer is regulated, reach the versatility of temperature sensor.
Finally, in order to reduce costs, described water temperature upper limit alarm pilot lamp and water temperature lower limit alarm lamp use light emitting diode, and the feature that light emitting diode power consumption is low and the life-span is long, makes alarm lamp avoid frequent replacing.
Brief description of the drawings
Fig. 1 is the structural representation of water temperature regulating circuit of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated,
According to the water temperature regulating circuit shown in Fig. 1, comprise temperature sensor 1, single-chip microcomputer 5, water temperature upper limit resistance R 1, water temperature lower limit resistance R 2 and heating arrangement 9, single-chip microcomputer 5 inside are with the first analog comparator 3 and the second analog comparator 4, water temperature upper limit resistance R 1, water temperature lower limit resistance R 2 is connected in parallel on temperature sensor 1 output terminal, water temperature upper limit resistance R 1 is connected with the first analog comparator 3 input ends, water temperature lower limit resistance R 2 is connected with the second analog comparator 4 input ends, the output terminal of single-chip microcomputer is connected with heating arrangement 9, water temperature upper limit alarm pilot lamp 7 and water temperature lower limit alarm lamp 8.
In the time using water temperature regulating circuit of the present utility model, only temperature sensor 1 need to be put into temperature measurement point place, selecting the measurement electric current of temperature sensor 1 is 0～9A, selecting electric current corresponding to normal water temperature range is 4～6A, temperature sensor 1 changes water temperature by the variation of current value and carrys out corresponding performance, owing to only using a temperature sensor 1 to detect water temperature lower limit and the water temperature upper limit, by water temperature upper limit resistance R 1 and water temperature lower limit resistance R 2, the output current of sensor is shunted, make to be connected with the fundamental current of water temperature upper limit resistance R 1 one road electric currents lower than single-chip microcomputer 5 inside, be connected with the fundamental current of water temperature lower limit resistance R 2 Yi road electric currents higher than single-chip microcomputer 5 inside, in the time that temperature sensor 1 detects water temperature lower than lower limit temperature, corresponding the reducing of electric current of temperature sensor 1, make current value in the second analog comparator 4 lower than fundamental current, now lighting water temperature lower limit alarm lamp 8 by single-chip microcomputer 5 points out, control heating arrangement 9 work heats simultaneously, otherwise, if water temperature over-high makes the current value that enters the first analog comparator 3 higher than fundamental current, now will light upper limit alarm pilot lamp 7, and heating-stopping apparatus 9, water temperature is maintained within the required range.
In order to be observed current temperature, temperature sensor 1 output terminal is connected with single-chip microcomputer 5 input ends by check and correction potentiometer RP2, and the output terminal of single-chip microcomputer 5 is connected with LCD display 6, convert actual temperature is presented in LCD display 6 by the multiple in check and correction potentiometer RP2 and single-chip microcomputer 5, be convenient to people and observe.On the major loop at water temperature upper limit resistance R 1 and water temperature lower limit resistance R 2 places, be connected with scope potentiometer RP1; In the time being multiplied the temperature of water temperature, can, directly by scope potentiometer RP1 is regulated, reach the versatility of temperature sensor 1.Water temperature upper limit alarm pilot lamp 7 and water temperature lower limit alarm lamp 8 use light emitting diode, and the feature that light emitting diode power consumption is low and the life-span is long, makes alarm lamp avoid frequent replacing.
Above-described is only preferred implementation of the present utility model; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (4)
1. water temperature regulating circuit, comprise temperature sensor, single-chip microcomputer, water temperature upper limit resistance, water temperature lower limit resistance and heating arrangement, it is characterized in that: described single-chip microcomputer inside is with the first analog comparator and the second analog comparator, described water temperature upper limit resistance, water temperature lower limit resistance is connected in parallel on temperature sensor output terminal, described water temperature upper limit resistance is connected with the first analog comparator input end, water temperature lower limit resistance is connected with the second analog comparator input end, the output terminal of described single-chip microcomputer is connected with described heating arrangement, water temperature upper limit alarm pilot lamp and water temperature lower limit alarm lamp.
2. water temperature regulating circuit according to claim 1, is characterized in that: described temperature sensor output terminal is connected with single-chip microcomputer input end by check and correction potentiometer, and the output terminal of single-chip microcomputer is connected with LCD display.
3. water temperature regulating circuit according to claim 1, is characterized in that: on the major loop at described water temperature upper limit resistance and water temperature lower limit resistance place, be connected with scope potentiometer.
4. according to the water temperature regulating circuit described in claim 1 or 3, it is characterized in that: described water temperature upper limit alarm pilot lamp and water temperature lower limit alarm lamp use light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020996.8U CN203643868U (en) | 2014-01-14 | 2014-01-14 | Water temperature regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020996.8U CN203643868U (en) | 2014-01-14 | 2014-01-14 | Water temperature regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643868U true CN203643868U (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420020996.8U Expired - Fee Related CN203643868U (en) | 2014-01-14 | 2014-01-14 | Water temperature regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170183A (en) * | 2017-12-29 | 2018-06-15 | 凯龙高科技股份有限公司 | A kind of methanol heater controller |
-
2014
- 2014-01-14 CN CN201420020996.8U patent/CN203643868U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170183A (en) * | 2017-12-29 | 2018-06-15 | 凯龙高科技股份有限公司 | A kind of methanol heater controller |
| WO2019128536A1 (en) * | 2017-12-29 | 2019-07-04 | 凯龙高科技股份有限公司 | Controller of methanol heater |
| CN108170183B (en) * | 2017-12-29 | 2020-06-09 | 凯龙高科技股份有限公司 | Methanol heater controller |
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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: 20140611 Termination date: 20150114 |
|
| EXPY | Termination of patent right or utility model |