CN204883433U - A thermostatic control circuit for plant is cultivateed - Google Patents
A thermostatic control circuit for plant is cultivateed Download PDFInfo
- Publication number
- CN204883433U CN204883433U CN201520568512.8U CN201520568512U CN204883433U CN 204883433 U CN204883433 U CN 204883433U CN 201520568512 U CN201520568512 U CN 201520568512U CN 204883433 U CN204883433 U CN 204883433U
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- operational amplifier
- output terminal
- constant temperature
- 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.)
- Expired - Fee Related
Links
Abstract
The application discloses a be used for the plant to cultivate, relate to plant culture techniques field. A temperature detection circuit, constant temperature prewired circuit, drive circuit, heating circuit and power supply circuit of a thermostatic control circuit for plant is cultivateed is including connecting gradually, power supply circuit's output and resistance R1's one end, resistance R3's other end connecting resistance R4's one end, resistance R5's one end and operational amplifier IC1's inverting input end is connected to resistance R3's among the temperature detection circuit one end, resistance R5's other end ground connection, thermistor R2's one end and operational amplifier IC1's non inverting input end are connected to resistance R1's the other end, thermistor R2's other end ground connection, operational amplifier IC1's output and resistance R6's one end, resistance R6's other end ground connection is connected to resistance R4's the other end. This patent is the low price not only, and work efficiency is higher moreover.
Description
Technical field
The utility model relates to technical field of plant culture, is specifically related to a kind of constant temperature control circuit cultivated for plant.
Background technology
Along with the raising of people's living standard, people more and more pursue the quality of life.The plants such as rare flower also more and more widely accept by common fan.But because China is vast in territory, various places weather is different, some plants are also not suitable for local temperature situation.In order to cultivate plant better, usually need the temperature constant state keeping certain hour.And the low price that current thermostatically-controlled equipment has, but when using, power consumption is larger; When some thermostatically-controlled equipments use, power consumption is less, but expensive, is not suitable for promoting between common fan.Therefore, the power consumption less and radiator valve of moderate cost when being badly in need of a kind of use.The utility model is applicable to the constant temperature control circuit of this radiator valve just.
Utility model content
The utility model provides a kind of constant temperature control circuit cultivated for plant, to solve the large and expensive problem of existing radiator valve power consumption.
For overcoming the above problems, adopt following scheme:
Scheme one: a kind of constant temperature control circuit cultivated for plant, comprises the temperature measurement circuit, constant temperature prewired circuit, driving circuit, heater circuit and the power circuit that connect successively; Described temperature measurement circuit comprises operational amplifier IC1, be connected to resistance R3 between operational amplifier IC1 inverting input and power circuit output end, be connected in parallel on resistance R1 on operational amplifier IC1 in-phase input end and thermistor R2; Described resistance R1 connects the output terminal of power circuit; In the negative feedback of operational amplifier IC1, the series arm of resistance R5 and resistance R6 is in parallel with resistance R4; The output terminal of operational amplifier IC1 is connected to constant temperature prewired circuit.
Principle of work: the temperature first detecting testee with temperature measurement circuit, and temperature signal is transferred to electrical signal transfer to constant temperature prewired circuit, after constant temperature prewired circuit receives signal, received signal and the temperature value preset are compared, if measured temperature drives heater circuit to heat lower than driving circuit during preset temperature, after measured temperature reaches preset temperature, driving circuit stops action, and heater circuit is corresponding to quit work.
Beneficial effect: 1. temperature measurement circuit, constant temperature prewired circuit, driving circuit, heater circuit and power circuit, connected mode is simple, and work efficiency is higher, and components and parts used are less and components and parts used are common components and parts, effectively reduce production cost.2. heater circuit is not at every moment all carrying out work, only has when the temperature that temperature measurement circuit is measured just drives heater circuit to start working lower than driving circuit during constant temperature prewired circuit, avoids unnecessary electricity waste.3. temperature measurement circuit comprises operational amplifier IC1, is connected to resistance R3 between operational amplifier IC1 inverting input and power circuit output end, is connected in parallel on resistance R1 on operational amplifier IC1 in-phase input end and thermistor R2; Described resistance R1 connects the output terminal of power circuit; In the negative feedback of operational amplifier IC1, the series arm of resistance R5 and resistance R6 is in parallel with resistance R4; The output terminal of operational amplifier IC1 is connected to constant temperature prewired circuit; Thermistor R2 is facilitated temperature signal to be detected fast.
Scheme two: on the basis of scheme one further, constant temperature prewired circuit comprises operational amplifier IC2; The in-phase input end of operational amplifier IC2 connects the output terminal of temperature measurement circuit, inverting input shunt capacitance C1, the adjustable resistance RP1 of operational amplifier IC2 and resistance R7, and resistance R7 connects the output terminal of power circuit; Adjustable resistance RP1 and electric capacity C1 ground connection; The output terminal of operational amplifier IC2 is connected to driving circuit; Facilitate constant temperature prewired circuit can set thermostat temperature value on a large scale.
Scheme three: on the basis of scheme one further, driving circuit comprise operational amplifier IC3 and and the output terminal of operational amplifier IC3 between the NPN type triode Q1 that is connected; The inverting input of operational amplifier IC3 connects the output terminal of constant temperature prewired circuit; The in-phase input end parallel resistance R8 of operational amplifier IC3 and resistance R9; Resistance R8 is connected between the output terminal of power circuit and the in-phase input end of operational amplifier IC3; Resistance R9 connects the emitter of NPN type triode Q1 through relay K; The collector of NPN type triode Q1 connects the output terminal of power circuit through resistance R10; Facilitate driving circuit can effectively drive heater circuit work, reduce electricity waste.
Scheme four: on the basis of scheme one further, heater circuit comprises the double-pole single throw be electrically connected with city, and fuse FU, resistance R11 between two cuttves being connected on double-pole single throw, normally opened contact K-2, the electric capacity C2 of relay K and heating wire R12; Heater circuit is facilitated to respond the driving of driving circuit fast.
Scheme five: on the basis of scheme four further, the voltage stabilizer IC4 that power circuit comprises the transformer T1 of primary windings connected in series between fuse FU and heating wire R12, the bridge rectifier diode D1 be connected with the secondary winding of transformer T1 and is connected with the output terminal of bridge rectifier diode D1; The output terminal of voltage stabilizer IC4 is the output terminal of power circuit; The second branch circuit parallel connection that the first branch road that the normally closed contact K-3 of resistance R13, relay K and light emitting diode D2 connects is connected with normally opened contact K-1 and the light emitting diode D3 of resistance R14, relay K is between voltage stabilizer IC4 and bridge rectifier diode D1; Power circuit is facilitated to provide stable power supply to export.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the temperature measurement circuit of the utility model embodiment;
Fig. 2 is the circuit diagram of the constant temperature prewired circuit of the utility model embodiment;
Fig. 3 is the circuit diagram of the driving circuit of the utility model embodiment;
Fig. 4 is the circuit diagram of the heater circuit of the utility model embodiment;
Fig. 5 is the circuit diagram of the power circuit of the utility model embodiment.
Embodiment
Below by embodiment, the utility model is described in further detail:
Reference numeral in Figure of description comprises: resistance R1, thermistor R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, heating wire R12, resistance R13, resistance R14, adjustable resistance RP1, fuse FU, electric capacity C1, electric capacity C2, electric capacity C3, electrochemical capacitor C4, operational amplifier IC1, operational amplifier IC2, operational amplifier IC3, voltage stabilizer IC4, relay K, normally opened contact K-1, normally opened contact K-2, normally closed contact K-3, transformer T1, bridge rectifier diode D1, light emitting diode D2, light emitting diode D3, NPN type triode Q1.
A kind of constant temperature control circuit for plant cultivation comprises the temperature measurement circuit, constant temperature prewired circuit, driving circuit, heater circuit and the power circuit that connect successively.
As shown in Figure 5, the first coil two ends of the transformer T1 in power circuit connect fuse FU respectively away from one end of urban electric power switch and heating wire R12 one end away from urban electric power switch, second coil of transformer T1 connects the top and bottom of bridge rectifier diode D1 respectively, the left end ground connection of bridge rectifier diode D1, the right-hand member of bridge rectifier diode D1 connects the input end of the anode of electrochemical capacitor C4, one end of resistance R13, one end of resistance R14 and voltage stabilizer IC4.The plus earth of electrochemical capacitor C4.The other end of resistance R13 connects one end of the normally closed contact K-3 of relay K, and the other end of normally closed contact K-3 connects the anode of green light emitting diode D2, the plus earth of light emitting diode D2.The other end of resistance R14 connects one end of the normally opened contact K-1 of relay K, and the other end of normally opened contact K-1 connects the anode of red light emitting diode D3, the plus earth of light emitting diode D3.The output terminal of voltage stabilizer IC4 connects one end of electric capacity C3, the other end ground connection of electric capacity C3.The output terminal of voltage stabilizer IC4 is the output terminal of power circuit.Wherein, voltage stabilizer IC4 adopts the pin one of LM7812, LM7812 to be voltage stabilizer IC4 input end, and the pin two of LM7812 is voltage stabilizer IC4 output terminal, pin 3 ground connection of LM7812.
Adopt integrated regulator LM7812, power circuit can be made to provide stable+12V voltage, ensure the stable of utility model works.Green light emitting diode D2 and red light emitting diode D3 is the working station indicator of power circuit, and when being in keeping warm mode, the normally closed contact K-3 of relay K connects, and makes green light emitting diode D2 luminous; When being in heated condition, the normally opened contact K-1 of relay K connects, time redness light emitting diode D3 luminous.By the different colours of viewing lamp, duty of the present utility model can be judged rapidly and accurately.
As shown in Figure 1, the one end of the resistance R3 in temperature measurement circuit connects the output terminal of power circuit and one end of resistance R1, the inverting input of one end of other end contact resistance R4 of resistance R3, one end of resistance R5 and operational amplifier IC1.The other end ground connection of resistance R5.The other end of resistance R1 connects one end of thermistor R2 and the in-phase input end of operational amplifier IC1.The other end ground connection of thermistor R2.The output terminal of other end concatenation operation amplifier IC1 of resistance R4 and one end of resistance R6, the other end ground connection of resistance R6.The output terminal of operational amplifier IC1 connects the input end of constant temperature prewired circuit.Wherein, operational amplifier IC1 adopts the pin two of LM324, LM324 to be operational amplifier IC1 inverting input, and the pin 3 of LM324 is operational amplifier IC1 in-phase input end, and the pin one of LM324 is operational amplifier IC1 output terminal, pin one 1 ground connection of LM324.
Resistance R1, thermistor R2, resistance R3 and resistance R5 together constitute bridge for measuring temperature, when measured temperature is lower than the temperature set, the signal that operational amplifier IC1 leads to phase input end that is delivered to of bridge for measuring temperature becomes low level, and the differential amplifier that the input of this low level consists of operational amplifier IC1 and resistance R4 amplifies.
As shown in Figure 2, the in-phase input end of the operational amplifier IC2 of constant temperature prewired circuit connects the output terminal of temperature measurement circuit, and the inverting input of operational amplifier IC2 connects one end of electric capacity C1, one end of resistance R7, one end of adjustable resistance RP1 and adjustable end.The other end ground connection of electric capacity C1.The other end ground connection of adjustable resistance RP1.The other end of resistance R7 connects the output terminal of power circuit.The output terminal of operational amplifier IC2 connects the input end of driving circuit.Wherein, operational amplifier IC2 adopts the pin 5 of LM324, LM324 to be operational amplifier IC2 in-phase input end, and the pin 6 of LM324 is operational amplifier IC2 inverting input, and the pin 7 of LM324 is operational amplifier IC2 output terminal.
Adjustable resistance RP1 is regulated to make the voltage of the inverting input of operational amplifier IC2 higher than in-phase input end, operational amplifier IC2 output low level; Otherwise then export high level.After adjustable resistance RP1 is conditioned, the height of the size of its resistance and the anti-phase input terminal voltage of operational amplifier IC2 and preset temperature is directly proportional.Electric capacity C1 plays the effect of anti-interference time delay, ensures the stable of integrated circuit work.
As shown in Figure 3, the output terminal of one end connection power circuit of the resistance R8 of driving circuit obtains the+12V voltage provided by power circuit, this end also one end of contact resistance R10 and one end of operational amplifier IC3 of resistance R8.The in-phase input end of other end concatenation operation amplifier IC3 of resistance R8 and one end of resistance R9, the other end ground connection of resistance R9.The inverting input of operational amplifier IC3 connects the output terminal of constant temperature prewired circuit, receives the signal passed over from constant temperature prewired circuit.The output terminal of operational amplifier IC3 connects the base stage of NPN type triode Q1.The other end of the collector contact resistance R10 of NPN type triode Q1.The emitter of NPN type triode Q1 connects one end of relay K, the other end ground connection of relay K.Wherein, the pin one 0 of operational amplifier IC3 employing LM324, LM324 is the in-phase input end of operational amplifier IC3, and the pin 9 of LM324 is the inverting input of operational amplifier IC3, and the pin 8 of LM324 is the output terminal of operational amplifier IC3.
When the signal exported from constant temperature prewired circuit is low level, operational amplifier IC3 exports high level, NPN type triode Q1 conducting makes relay K adhesive, the heater circuit be connected with driving circuit can be made to start working, heating to improve temperature to cooling the measured object gone down, making temperature remain at temperature constant state.
As shown in Figure 4, the one end of the fuse FU in heater circuit connects the first cutter of the double-pole single throw be electrically connected with city, one end of the other end contact resistance R11 of fuse FU.The other end of resistance R11 connects one end of the normally opened contact K-2 of relay K, the other end of normally opened contact K-2 connects one end of electric capacity C2, the other end of electric capacity C2 connects one end of heating wire R12, and the other end of heating wire R12 connects the second cutter of the double-pole single throw be electrically connected with city.
When relay K adhesive, normally opened contact K-2 closes, heating wire R12 ON operation, and heat to cooling the measured object gone down, after temperature reaches setting value, relay K disconnects, and normally opened contact K-2 recovers normally open, and heating wire R12 open circuit does not work.Ensure measured object constant temperature.
The pin distribution of chip used herein is all according to the use on its databook.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (5)
1., for the constant temperature control circuit that plant is cultivated, it is characterized in that: comprise the temperature measurement circuit, constant temperature prewired circuit, driving circuit, heater circuit and the power circuit that connect successively; Described temperature measurement circuit comprises operational amplifier IC1, be connected to resistance R3 between operational amplifier IC1 inverting input and power circuit output end, be connected in parallel on resistance R1 on operational amplifier IC1 in-phase input end and thermistor R2; Described resistance R1 connects the output terminal of power circuit; In the negative feedback of operational amplifier IC1, the series arm of resistance R5 and resistance R6 is in parallel with resistance R4; The output terminal of operational amplifier IC1 is connected to constant temperature prewired circuit.
2. the constant temperature control circuit cultivated for plant according to claim 1, is characterized in that: constant temperature prewired circuit comprises operational amplifier IC2; The in-phase input end of operational amplifier IC2 connects the output terminal of temperature measurement circuit, inverting input shunt capacitance C1, the adjustable resistance RP1 of operational amplifier IC2 and resistance R7, and resistance R7 connects the output terminal of power circuit; Adjustable resistance RP1 and electric capacity C1 ground connection; The output terminal of operational amplifier IC2 is connected to driving circuit.
3. the constant temperature control circuit cultivated for plant according to claim 1, is characterized in that: driving circuit comprise operational amplifier IC3 and and the output terminal of operational amplifier IC3 between the NPN type triode Q1 that is connected; The inverting input of operational amplifier IC3 connects the output terminal of constant temperature prewired circuit; The in-phase input end parallel resistance R8 of operational amplifier IC3 and resistance R9; Resistance R8 is connected between the output terminal of power circuit and the in-phase input end of operational amplifier IC3; Resistance R9 connects the emitter of NPN type triode Q1 through relay K; The collector of NPN type triode Q1 connects the output terminal of power circuit through resistance R10.
4. the constant temperature control circuit cultivated for plant according to claim 1, it is characterized in that: heater circuit comprises the double-pole single throw be electrically connected with city, and fuse FU, resistance R11 between two cuttves being connected on double-pole single throw, normally opened contact K-2, the electric capacity C2 of relay K and heating wire R12.
5. the constant temperature control circuit cultivated for plant according to claim 4, is characterized in that: the voltage stabilizer IC4 that power circuit comprises the transformer T1 of primary windings connected in series between fuse FU and heating wire R12, the bridge rectifier diode D1 be connected with the secondary winding of transformer T1 and is connected with the output terminal of bridge rectifier diode D1; The output terminal of voltage stabilizer IC4 is the output terminal of power circuit; The second branch circuit parallel connection that the first branch road that the normally closed contact K-3 of resistance R13, relay K and light emitting diode D2 connects is connected with normally opened contact K-1 and the light emitting diode D3 of resistance R14, relay K is between voltage stabilizer IC4 and bridge rectifier diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568512.8U CN204883433U (en) | 2015-07-31 | 2015-07-31 | A thermostatic control circuit for plant is cultivateed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520568512.8U CN204883433U (en) | 2015-07-31 | 2015-07-31 | A thermostatic control circuit for plant is cultivateed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204883433U true CN204883433U (en) | 2015-12-16 |
Family
ID=54827789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520568512.8U Expired - Fee Related CN204883433U (en) | 2015-07-31 | 2015-07-31 | A thermostatic control circuit for plant is cultivateed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204883433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068579A (en) * | 2015-07-31 | 2015-11-18 | 重庆市志益鑫电子科技有限公司 | Constant-temperature control circuit for plant culture |
-
2015
- 2015-07-31 CN CN201520568512.8U patent/CN204883433U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068579A (en) * | 2015-07-31 | 2015-11-18 | 重庆市志益鑫电子科技有限公司 | Constant-temperature control circuit for plant culture |
| CN105068579B (en) * | 2015-07-31 | 2017-06-13 | 重庆市志益鑫电子科技有限公司 | A kind of constant temperature control circuit for plant culture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105068579A (en) | Constant-temperature control circuit for plant culture | |
| CN204259199U (en) | Electromagnetic Heating control circuit, electromagnetic heater and electromagnetic oven | |
| CN204883433U (en) | A thermostatic control circuit for plant is cultivateed | |
| CN204740511U (en) | Thermostatic control circuit of birds, beasts and eggs hatching | |
| CN106658767A (en) | Incubator thermostatic control circuit | |
| CN206557626U (en) | A kind of smart electronicses temperature controller | |
| CN203207828U (en) | Temperature adjustable electric cooker | |
| CN103812233A (en) | Micro-current induction power supply type temperature measuring and alarming device and temperature measuring and alarming method | |
| CN204256501U (en) | A kind of potted landscape growing environment automatic detection and control system | |
| CN203942889U (en) | Soil automatic irrigation device | |
| CN201945896U (en) | Temperature control circuit of metal ceramic heating block | |
| CN205245338U (en) | Heating power measurement automatic control system | |
| CN204314696U (en) | Fishery cultivating remote wireless monitoring device | |
| CN203498081U (en) | Ozone machine with self-control of ozone concentration | |
| CN204740287U (en) | Cabinet air -conditioner mutual -inductor electric energy metering device | |
| CN204536951U (en) | A kind of electricity warm fan Intelligent heating circuit | |
| CN104460763B (en) | Constant-temperature control switching circuit | |
| CN204388375U (en) | A kind of water heater conduit's thermal circuit | |
| CN204350416U (en) | Classroom LED low-temperature startup device | |
| CN205103341U (en) | Multi -functional load box of wireless Intelligence | |
| CN206594550U (en) | The temperature-detecting device of comprehensive distribution box | |
| CN104422866A (en) | Test circuit and test device | |
| CN206479859U (en) | A kind of incubator box for domestic fowl temperature control circuit with lightning protection function | |
| CN2182368Y (en) | Multi-function solar energy water-heating device | |
| CN204795722U (en) | Novel energy -conserving fluorescent lamp |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160731 |