CN106658767A - Incubator thermostatic control circuit - Google Patents
Incubator thermostatic control circuit Download PDFInfo
- Publication number
- CN106658767A CN106658767A CN201611015717.9A CN201611015717A CN106658767A CN 106658767 A CN106658767 A CN 106658767A CN 201611015717 A CN201611015717 A CN 201611015717A CN 106658767 A CN106658767 A CN 106658767A
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- CN
- China
- Prior art keywords
- resistance
- pin
- chips
- incubator
- circuit
- 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.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K41/00—Incubators for poultry
- A01K41/02—Heating arrangements
- A01K41/023—Devices for regulating temperature
Abstract
The invention provides an incubator thermostatic control circuit. The incubator thermostatic control circuit is constructed by taking an operational amplifier LM358 chip and a time-base circuit NE555 chip as a control core. Compared to a conventional incubator thermostatic control circuit, the incubator thermostatic control circuit is constructed by taking the operational amplifier LM358 chip and the time-base circuit NE555 chip as the control core, a temperature inside an incubator is sampled through a thermistor, the temperature is used in an operational amplifier for comparing with a set upper limit temperature and a set lower limit temperature, then output of the NE555 chip is controlled by use of a calculation result output by the operational amplifier, accordingly, heating and stop of a heater are controlled, and thus the purpose of thermostatic control is realized. The whole circuit control line is simple, the temperature control is accurate, the work is stable, a temperature out-of-control phenomenon is not easily generated even if the circuit works for long time, and the application effect is quite good.
Description
Technical field
The present invention relates to a kind of control circuit, specifically a kind of incubator constant temperature control circuit, belong to electronic technology field.
Background technology
The poultry hatching of early stage is typically carried out by the way of poultry sits on eggs, and this mode is only applicable to small-scale hatching.
With the development and the progress of science and technology of society, on a large scale hatching is typically entered using special incubator for current modern times poultry producer
OK, this hatching pattern is independent of poultry and sits on eggs, but adopts the method that electric heating warming is carried out to incubator to carry out artificial incubation, because
This hatching efficiency is high, time saving and energy saving, can be operated with scale.For such incubator, in order to ensure hatching success, most
It is important that to keep the constant of incubator internal temperature, thus incubator be generally fitted provided with constant temperature control circuit to it is upper,
Lower limit temperature automatically adjusts.However, the constant temperature control circuit generally existing of incubator on the market some shortcomings part,
Mainly control circuit is complicated, and temperature control is not accurate enough, is susceptible to temperature control failure, and to raiser loss is brought.Cause
It is desirable that to design a kind of control simple, temperature control is accurate and incubator constant temperature control circuit of working stability for this.
The content of the invention
It is an object of the invention to provide a kind of incubator constant temperature control circuit, to solve existing incubator constant temperature control circuit
Control circuit is complicated, and temperature control is inaccurate, is susceptible to the problem of temperature control failure.
The present invention concrete technical scheme be：
A kind of incubator constant temperature control circuit, it adopts operational amplifier LM358 chips and time base circuit NE555 chips as control
Core processed is built, the circuit using 220V civil power Jing transformer T1 transformations and rectifier bridge D1～D4 full-wave rectifications, then according to
Secondary Jing electric capacity C1 filtering, the voltage stabilizing of three terminal regulator 7812 after electric capacity C2 filtering, obtains direct current 12V power supplys and is powered.
One end of 12V power supply connecting resistance R1, R3 and thermistor RT；The one of another termination adjustable resistance RP1 of resistance R1
End, 2 pin of the regulation termination LM358 chips of adjustable resistance RP1, is grounded after the other end series resistor R2 of adjustable resistance RP1；Electricity
One end of another termination adjustable resistance RP2 of resistance R3,5 pin of the regulation termination LM358 chips of adjustable resistance RP2, adjustable resistance
It is grounded after the other end series resistor R4 of RP2；3,6 pin and adjustable resistance RP3 of another termination LM358 chip of thermistor RT
One end, the other end of adjustable resistance RP3 and adjustable side are grounded；8 pin of LM358 chips connect 12V power supplys, 4 pin ground connection, 1 pin and 7
Pin connects respectively 2 pin and 4 pin of NE555 chips；8 pin of NE555 chips connect 12V power supplys, 1 pin ground connection, after 5 pin serial capacitance C3
Ground connection, 3 pin series resistor R5 are followed by the base stage of triode Q1；The grounded emitter of triode Q1, collector connecting relay K coils
One end and diode D5 positive pole, the other end of relay K coils and the negative pole of diode D5 connect 12V power supplys.
220V civil powers are parallel between the L lines at N lines and switch S rears and are added by L On line switch S control break-makes are serially connected in
Hot device circuit, in heater circuit, connects one end and the resistance of ptc heater after moving together contact K1 of L lines concatenation relay K
One end of R3, one end of another termination indicator lamp Ne of resistance R3, the other end of ptc heater and the other end of indicator lamp Ne and
N lines are connected.
The electric capacity C1 and C2 is respectively adopted the electrochemical capacitor of 220 μ F and 2.2 μ F, and electric capacity C3 adopts the electric capacity of 0.01 μ F,
Resistance R1, R3 adopt the resistance of 10k Ω, resistance R2, R4 to adopt the resistance of 8k Ω, adjustable resistance RP1, RP2 to adopt the electricity of 51k Ω
Position device, thermistor RT adopt 100k Ω negative tempperature coefficient thermistors, adjustable resistance RP3 using 100k Ω potentiometer, three
Pole pipe Q1 adopts NPN triode 8050, relay K to adopt JZC-22F-DC12V relays.
The resistance R6 adopts the resistance of 100k Ω, indicator lamp Ne to be not more than the neon bulb of 100V using starting voltage.
Advantages of the present invention is：Compare with common incubator constant temperature control circuit, incubator constant temperature control circuit of the present invention
Built as control core using operational amplifier LM358 chips and time base circuit NE555 chips, by thermistor pair
Temperature inside incubator is sampled, and is used for being contrasted with the upper and lower limit temperature of setting in operational amplifier, then uses
The result of calculation of operational amplifier output controls the heating and stopping of heater controlling the output of NE555 chips, reaches
Thermostatically controlled purpose.Whole circuit controling line road is simple, and temperature control is accurate, working stability, even if not working long hours also not
Temperature control phenomenon is susceptible to, using effect is very good.
Description of the drawings
Fig. 1 is the circuit diagram of incubator constant temperature control circuit of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described.
As shown in figure 1, the incubator constant temperature control circuit of the present invention, it adopts operational amplifier LM358 chips and Shi Ji
Circuit NE555 chips are built as control core, and the circuit is using 220V civil power Jing transformer T1 transformations and rectifier bridge
D1～D4 full-wave rectifications, then Jing electric capacity C1 filtering successively, the voltage stabilizing of three terminal regulator 7812 after electric capacity C2 filtering, obtains direct current 12V
Power supply is powered.
One end of 12V power supply connecting resistance R1, R3 and thermistor RT；The one of another termination adjustable resistance RP1 of resistance R1
End, 2 pin of the regulation termination LM358 chips of adjustable resistance RP1, is grounded after the other end series resistor R2 of adjustable resistance RP1；Electricity
One end of another termination adjustable resistance RP2 of resistance R3,5 pin of the regulation termination LM358 chips of adjustable resistance RP2, adjustable resistance
It is grounded after the other end series resistor R4 of RP2；3,6 pin and adjustable resistance RP3 of another termination LM358 chip of thermistor RT
One end, the other end of adjustable resistance RP3 and adjustable side are grounded；8 pin of LM358 chips connect 12V power supplys, 4 pin ground connection, 1 pin and 7
Pin connects respectively 2 pin and 4 pin of NE555 chips；8 pin of NE555 chips connect 12V power supplys, 1 pin ground connection, after 5 pin serial capacitance C3
Ground connection, 3 pin series resistor R5 are followed by the base stage of triode Q1；The grounded emitter of triode Q1, collector connecting relay K coils
One end and diode D5 positive pole, the other end of relay K coils and the negative pole of diode D5 connect 12V power supplys.
220V civil powers are parallel between the L lines at N lines and switch S rears and are added by L On line switch S control break-makes are serially connected in
Hot device circuit, in heater circuit, connects one end and the resistance of ptc heater after moving together contact K1 of L lines concatenation relay K
One end of R3, one end of another termination indicator lamp Ne of resistance R3, the other end of ptc heater and the other end of indicator lamp Ne and
N lines are connected.
The operation principle of this incubator constant temperature control circuit is：ON switch S, after supply line is powered, when in incubator
When temperature is less than the lower limit for setting, the resistance of thermistor RT is larger, 2 pin negative input ends of amplifier U1 of LM358 chips
Voltage is higher than 3 pin positive input terminal voltages, therefore 1 pin exports 2 pin of low level to NE555 chips, makes 3 pin of NE555 chips defeated
Go out high level, triode Q1 is turned on, and relay K adhesives, ptc heater obtains electrical heating, while indicator lamp Ne is lighted.
With the rising of incubator internal temperature, the resistance of thermistor RT is gradually reduced, and makes 3,6 pin of LM358 chips
Voltage is gradually increasing, and when incubator internal temperature rises to the higher limit of design temperature, 6 pin of amplifier U2 of LM358 chips are born
The voltage of input is higher than 5 pin positive input terminal voltages, therefore 7 pin export 4 pin of low level to NE555 chips, make NE555 chips
Resetted by triggering, its 3 pin output switching activity is low level, triode Q1 cut-offs, relay K releases, ptc heater dead electricity stops adding
Heat, while indicator lamp Ne extinguishes, incubator internal temperature slowly declines.
When incubator internal temperature drops to the lower limit of setting, 3 pin of NE555 chips overturn output high level again,
Ptc heater obtains electrical heating.Thus can be stable in the number range of a relative constancy by incubator internal temperature.Adjust
The resistance of whole adjustable resistance RP1 and RP2, thus it is possible to vary the numerical value of upper and lower limit temperature.
Above-mentioned legend is only the exemplary embodiments of the present invention, is not limited to the present invention, all spirit in the present invention and
Any modification made within principle or equivalent and improvement etc., should be included within the scope of the present invention.
Claims (3)
1. a kind of incubator constant temperature control circuit, is characterized in that：The circuit is electric using operational amplifier LM358 chips and Shi Ji
Road NE555 chips are built as control core, and the circuit is using 220V civil power Jing transformer T1 transformations and rectifier bridge D1
～D4 full-wave rectifications, then Jing electric capacity C1 filtering successively, the voltage stabilizing of three terminal regulator 7812 after electric capacity C2 filtering, obtains direct current 12V electric
Source is powered；
One end of 12V power supply connecting resistance R1, R3 and thermistor RT；One end of another termination adjustable resistance RP1 of resistance R1, can
2 pin of the regulation termination LM358 chips of resistance RP1 are adjusted, is grounded after the other end series resistor R2 of adjustable resistance RP1；Resistance R3
Another termination adjustable resistance RP2 one end, adjustable resistance RP2 regulation termination LM358 chips 5 pin, adjustable resistance RP2's
It is grounded after other end series resistor R4；3,6 pin of another termination LM358 chip of thermistor RT and the one of adjustable resistance RP3
End, the other end of adjustable resistance RP3 and adjustable side are grounded；8 pin of LM358 chips connect 12V power supplys, 4 pin ground connection, 1 pin and 7 pin point
Not Lian Jie NE555 chips 2 pin and 4 pin；8 pin of NE555 chips connect 12V power supplys, and 1 pin ground connection, 5 pin serial capacitance C3 are followed by
Ground, 3 pin series resistor R5 are followed by the base stage of triode Q1；The grounded emitter of triode Q1, collector connecting relay K coils
One end and the positive pole of diode D5, the other end of relay K coils and the negative pole of diode D5 connect 12V power supplys；
220V civil powers control break-make by L On line switch S is serially connected in, the having heaters in parallel between the L lines at N lines and switch S rears
Circuit, in heater circuit, connects one end and the resistance R3 of ptc heater after moving together contact K1 of L lines concatenation relay K
One end, one end of another termination indicator lamp Ne of resistance R3, the other end of ptc heater and the other end of indicator lamp Ne and N lines
It is connected.
2. constant temperature control circuit according to claim 1, is characterized in that：The electric capacity C1 and C2 be respectively adopted 220 μ F and
The electrochemical capacitor of 2.2 μ F, electric capacity C3 adopts the electric capacity of 0.01 μ F, resistance R1, R3 to adopt the resistance of 10k Ω, resistance R2, R4 to adopt
The resistance of 8k Ω, adjustable resistance RP1, RP2 adopt the potentiometer of 51k Ω, and thermistor RT is using 100k Ω negative temperature coefficients warm
Quick resistance, adjustable resistance RP3 adopts the potentiometer of 100k Ω, triode Q1 to adopt NPN triode 8050, relay K to adopt
JZC-22F-DC12V relays.
3. constant temperature control circuit according to claim 1, is characterized in that：The resistance R6 is referred to using the resistance of 100k Ω
Show that lamp Ne is not more than the neon bulb of 100V using starting voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015717.9A CN106658767A (en) | 2016-11-18 | 2016-11-18 | Incubator thermostatic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015717.9A CN106658767A (en) | 2016-11-18 | 2016-11-18 | Incubator thermostatic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106658767A true CN106658767A (en) | 2017-05-10 |
Family
ID=58807804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015717.9A Pending CN106658767A (en) | 2016-11-18 | 2016-11-18 | Incubator thermostatic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106658767A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110430646A (en) * | 2019-08-14 | 2019-11-08 | 周操操 | A kind of temperature-controllable Multifunctional medical care lamp control circuit |
| CN110647187A (en) * | 2019-08-19 | 2020-01-03 | 江苏星光新材料科技有限公司 | Temperature constant system in production process of wear-resistant paper |
| CN112004271A (en) * | 2020-07-24 | 2020-11-27 | 西安爱生技术集团公司 | Intelligent heater of small unmanned aerial vehicle airspeed head |
| CN112698673A (en) * | 2021-01-21 | 2021-04-23 | 伍仁杰 | Medical headrest control circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047091U (en) * | 1987-10-10 | 1989-11-08 | 杨谊胜 | Small incubator with constant temp. |
| CN202995491U (en) * | 2012-11-13 | 2013-06-12 | 佛山市顺德区瑞德电子实业有限公司 | Simple constant-temperature control circuit |
| CN204740511U (en) * | 2015-04-30 | 2015-11-04 | 苏州锟恩电子科技有限公司 | Thermostatic control circuit of birds, beasts and eggs hatching |
| CN205681645U (en) * | 2016-06-24 | 2016-11-09 | 陈进 | A kind of PTC electric heating plaster |
-
2016
- 2016-11-18 CN CN201611015717.9A patent/CN106658767A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2047091U (en) * | 1987-10-10 | 1989-11-08 | 杨谊胜 | Small incubator with constant temp. |
| CN202995491U (en) * | 2012-11-13 | 2013-06-12 | 佛山市顺德区瑞德电子实业有限公司 | Simple constant-temperature control circuit |
| CN204740511U (en) * | 2015-04-30 | 2015-11-04 | 苏州锟恩电子科技有限公司 | Thermostatic control circuit of birds, beasts and eggs hatching |
| CN205681645U (en) * | 2016-06-24 | 2016-11-09 | 陈进 | A kind of PTC electric heating plaster |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110430646A (en) * | 2019-08-14 | 2019-11-08 | 周操操 | A kind of temperature-controllable Multifunctional medical care lamp control circuit |
| CN110647187A (en) * | 2019-08-19 | 2020-01-03 | 江苏星光新材料科技有限公司 | Temperature constant system in production process of wear-resistant paper |
| CN112004271A (en) * | 2020-07-24 | 2020-11-27 | 西安爱生技术集团公司 | Intelligent heater of small unmanned aerial vehicle airspeed head |
| CN112698673A (en) * | 2021-01-21 | 2021-04-23 | 伍仁杰 | Medical headrest control circuit |
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Application publication date: 20170510 |
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