CN211241043U - Flower greenhouse heating system - Google Patents
Flower greenhouse heating system Download PDFInfo
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- CN211241043U CN211241043U CN201922290452.9U CN201922290452U CN211241043U CN 211241043 U CN211241043 U CN 211241043U CN 201922290452 U CN201922290452 U CN 201922290452U CN 211241043 U CN211241043 U CN 211241043U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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Abstract
The utility model discloses a flower greenhouse system of heating relates to greenhouse planting field, and its technical scheme main points are including the greenhouse with set up in the outer boiler of greenhouse, are connected with inlet tube and wet return that lets in the greenhouse inside on the boiler, still including being used for carrying out the main power supply switching module and the external power supply switching module that supply power for the boiler, be used for controlling the boiler and switch over the control module that module or external power supply switching module switched on with the main power supply and according to the temperature control boiler switch on-off's in the greenhouse temperature control module. The solar energy power supply system has the technical effect that power supply can be switched to commercial power when the electric quantity of the solar battery is insufficient, so that the stability of work is guaranteed on the basis of energy conservation.
Description
Technical Field
The utility model relates to a greenhouse planting field, in particular to flower greenhouse heating system.
Background
Currently, energy shortage becomes a key problem which seriously restricts the development of economic society in China, and energy conservation is an important component of national energy strategy. In the cultivation process of some rare flowers such as China rose, the temperature is highly required, and the indoor temperature is required to be not less than 15 ℃ in winter and to be lower than 5 ℃ to enter dormancy. In order to meet the requirements, boilers and heat exchange water pipes are mostly adopted in the market at present to heat the interior of the greenhouse.
The boiler generally comprises two types, one type is a commercial power boiler, and the boiler has the advantages of continuous and stable functions, high energy consumption and high cost. The other is a solar cell boiler, which can use a solar cell to supply power, is more energy-saving and environment-friendly compared with a coal-fired boiler, but can reduce the power supply of the solar cell on continuous cloudy days, and seriously influences the use of the boiler. Therefore, in order to ensure the control of the temperature in the greenhouse, a heating system which is energy-saving, environment-friendly and stable in work is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a system of heating of flowers greenhouse, it can be when the solar cell electric quantity is not enough with the power supply switch to the commercial power on to the stability of work has been guaranteed on energy-conserving basis.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a flower greenhouse heating system comprises a greenhouse, a main power supply switching module, an external power supply switching module and a control module;
the main power switching module includes:
the solar cell is arranged on the top of the greenhouse;
the main voltage acquisition unit comprises an input end electrically connected with the solar cell and an output end used for outputting main acquisition voltage;
the detection switch unit receives the main acquisition voltage and is used for outputting the corresponding main power supply voltage, the detection switch unit comprises a main power supply controllable switch, and the detection switch unit controls the on-off of the main power supply controllable switch based on the magnitude of the main acquisition voltage; the detection switch unit also comprises a detection end for detecting the main power supply voltage and outputting a main power supply detection signal;
the external power switching module includes:
the external voltage acquisition unit comprises an input end and an output end, wherein the input end is electrically connected with an external power supply, and the output end is used for outputting an external acquisition voltage;
the external voltage switch unit comprises an external voltage controllable switch, an input end for receiving external acquired voltage, an output end for outputting external power supply voltage and a control end for controlling the on-off of the external voltage controllable switch;
the control module includes:
the preset voltage signal output source is used for outputting a preset voltage signal;
the input end of the control module is electrically connected with the detection end of the detection switch unit, compares the main power supply detection signal with a preset voltage signal, and outputs a control signal to the control end of the external voltage switch unit based on the comparison result.
By adopting the technical scheme, when an external power supply, such as a mains supply, is connected to the external power supply switching module, the main voltage acquisition unit acquires the voltage input by the external power supply and outputs the main acquired voltage to the detection switch unit, the detection switch unit controls the on-off of the main power supply controllable switch according to the size of the main acquired voltage, and when the main power supply controllable switch is connected, the detection switch unit outputs the main power supply voltage. The detection switch unit detects the main power supply voltage and outputs a main power supply detection signal to the control module. When the external illumination is continuously insufficient, the electric quantity of the solar battery is reduced, and when the electric quantity of the solar battery is low to a certain degree, a main power supply detection signal is correspondingly reduced. When the main power supply detection signal is weaker than the preset voltage signal, the control module sends a corresponding control signal to the control end, the control signal connects the external power supply controllable switch, and the external voltage controllable switch outputs external power supply voltage to the load. When the electric quantity of the solar battery is relatively sufficient, the main power supply detection signal is stronger than the preset voltage signal, the control module sends a corresponding control signal to the control end, the control signal turns off the external voltage controllable switch, and at the moment, the load is supplied with power by the main power supply voltage.
In summary, when the electric quantity of the solar battery is high, the main power supply switching module is turned on, and the external voltage switching circuit is turned off; when the electric quantity of the solar battery is insufficient, the main power supply switching circuit can be automatically switched to the external voltage switching circuit so that the load can be switched to the commercial power to continue normal work when the electric quantity of the solar battery is insufficient, and therefore the stability of work is guaranteed on the basis of energy conservation.
Further setting: the detection switch unit includes:
the input detection circuit is arranged at two ends of the main voltage acquisition unit and used for detecting the main power acquisition voltage exceeding a threshold value and outputting a main power acquisition voltage detection signal based on the main power acquisition voltage;
the switch circuit is arranged at two ends of the main voltage acquisition unit, receives the main acquisition voltage, is used for outputting the corresponding main power supply voltage, comprises the main power supply controllable switch, and controls the on-off of the main power supply controllable switch based on the magnitude of the main power supply acquisition voltage detection signal;
the output detection circuit is arranged at the output end of the switch circuit and comprises a detection end, and the output detection circuit outputs a main power supply detection signal based on the size of the main power supply voltage.
By adopting the technical scheme, when the input detection circuit can detect the main power supply acquisition voltage, when the main power supply acquisition voltage is lower than the threshold value, the electric quantity of the solar battery is judged to be insufficient, the voltage detection signal is at a low level, the main power supply controllable switch is switched off, and the main power supply detection signal output by the output detection circuit is at a low level. When the main power supply acquisition voltage is higher than the threshold value, the electric quantity of the solar battery is judged to be sufficient, the voltage detection signal is at a high level, the main power supply controllable switch is communicated, and the main power supply detection signal output by the output detection circuit is at the high level.
Further setting: the control module further comprises a voltage comparator, the in-phase end of the voltage comparator is electrically connected with a preset voltage signal output source, the reverse end of the voltage comparator is electrically connected with the detection end of the detection switch unit, and the output end of the voltage comparator is electrically connected with the control end of the external voltage switch unit.
By adopting the technical scheme, the voltage comparator compares the main power supply detection signal with the preset voltage signal, and when the main power supply detection signal is higher than the preset voltage signal, the output end of the voltage comparator outputs a low level to control the external power supply controllable switch to be switched off. When the main power supply detection signal is lower than the preset voltage signal, the output end of the voltage comparator outputs high level to control the controllable switch of the external power supply to be communicated, and the external power supply replaces the solar battery to supply power to the load.
Further setting: the external voltage controllable switch comprises a PMOS tube and an NPN type triode, the source electrode of the PMOS tube is the input end of the external voltage controllable switch, the grid electrode of the PMOS tube is electrically connected with the source electrode through a fixed resistor, and the drain electrode of the PMOS tube is the output end of the external voltage controllable switch; the source electrode of the triode is a control end, the collector electrode of the triode is electrically connected with the grid electrode of the PMOS tube, and the emitter electrode of the triode is connected with the ground wire.
By adopting the technical scheme, when the control signal is at a high level, the NPN triode is conducted, at the moment, the grid electrode of the PMOS tube is at a low level, and the source electrode of the PMOS tube is at a high level, so that the PMOS tube is conducted, and the external power supply voltage is at a high level and supplies power to the load. When the control signal is at a low level, the NPN triode is disconnected, and at the moment, the grid electrode and the source electrode of the PMOS tube are both at the same high level, so that the PMOS tube is disconnected.
Further setting: still include the boiler, be connected with inlet tube and the wet return that lets in greenhouse inside on the boiler.
Through adopting above-mentioned technical scheme, the load is the boiler, and the boiler circular telegram heats water, and inside hot water got into the greenhouse through the inlet tube, to giving off the heat in the greenhouse, returns reheating in the boiler behind the cold water.
Further setting: still include temperature control module, temperature control module including set up in the greenhouse with the temperature sensor that detects indoor temperature, be used for outputting the temperature signal output source of predetermineeing temperature signal, even in temperature sensor and predetermine temperature signal output source's comparison module and relay, temperature sensor is used for examining the indoor temperature of temperature and exports corresponding temperature detection signal, comparison module is based on the temperature detection signal and predetermines the on-off of temperature signal's comparative result control relay switch, main power supply switching module output and external power source switching module's output pass through relay switch and boiler electrical property and link to each other.
Through adopting above-mentioned technical scheme, when indoor temperature is higher than the setting value, the disconnection of comparison module control relay switch, boiler and power disconnection avoid still heating the greenhouse under the suitable temperature to avoid the waste of the energy.
Further setting: the solar cells are arranged at intervals at the top of the greenhouse.
Through adopting above-mentioned technical scheme, solar cell's interval sets up, can enough carry out the sunshade for the planting of crop in the greenhouse, can also leave sufficient sunshine for the growth of crop in advance.
To sum up, the utility model discloses following beneficial effect has:
1. the power supply can be switched to the commercial power when the electric quantity of the solar battery is insufficient, so that the stability of the work is ensured on the basis of energy conservation;
2. the heating device can automatically control the boiler to be turned on or off according to the indoor temperature condition so as to replace manual switching work, and is more convenient, timely and accurate, and energy is saved.
Drawings
FIG. 1 is a schematic overall view of a flower greenhouse warming system according to the present embodiment;
fig. 2 is a circuit diagram of a flower greenhouse warming system in the present embodiment.
In the figure, the position of the upper end of the main shaft,
1. a greenhouse; 2. a boiler; 21. a water inlet pipe; 22. a water return pipe;
3. a main power switching module; 31. a solar cell; 32. a main voltage acquisition unit; 33. a detection switch unit; 331. an input detection circuit; 332. a switching circuit; 333. an output detection circuit;
4. an external power supply switching module; 40. an external power supply; 41. an external voltage acquisition unit; 42. an external voltage switching unit;
5. a control module; 51. presetting a voltage signal output source;
6. a temperature control module; 61. a temperature sensor; 62. and presetting a temperature signal output source.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a flowers greenhouse system that heats, refer to fig. 1 and fig. 2, include greenhouse 1 and set up boiler 2 outside greenhouse 1, be connected with inlet tube 21 and wet return 22 that let in greenhouse 1 inside on the boiler 2, still including being used for carrying out the main power supply switching module 3 and the external power supply switching module 4 that supplies power for boiler 2, be used for controlling boiler 2 and main power supply switching module 3 or the control module 5 that external power supply switching module 4 switched on, and according to temperature control boiler 2 switch on-off's temperature control module 6 in greenhouse 1.
Referring to fig. 2, the main power switching module 3 includes a solar cell 31, a main voltage acquisition unit 32 disposed at both ends of the solar cell 31, and a detection switch unit 33 electrically connected to the main voltage acquisition unit 32.
Referring to fig. 1, the solar cells 31 are spaced apart from each other at the top of the greenhouse 1, and can shade the plants in the greenhouse 1 and reserve enough sunlight for the plants to grow.
Referring to fig. 2, the main voltage obtaining unit 32 includes an inductor L1, and an inductor L1 is connected in series to the positive electrode of the solar cell 31 to output a main obtained voltage at an end away from the solar cell 31.
With continued reference to fig. 2, the detection switch unit 33 includes an input detection circuit 331 for detecting the main power supply acquisition voltage, a switch circuit 332 for controlling connection or disconnection between the solar cell 31 and the boiler 2, and an output detection circuit 333 for detecting the output voltage of the switch circuit 332.
The input detection circuit 331 includes a zener diode D11, a fixed resistor R11, and a fixed resistor R12 sequentially connected between the output terminal and the negative terminal of the main voltage obtaining unit 32, the negative terminal of the zener diode D11 is electrically connected to the output terminal of the main voltage obtaining unit 32, and the fixed resistor R12 and the negative terminal of the solar cell 31 are connected to the ground.
The switching circuit 332 includes an NPN transistor Q11, an NPN diode Q12, a fixed resistor R13, and a PMOS transistor Q13, the transistor Q11 having a base connected between the fixed resistor R11 and the fixed resistor R12, a collector connected to the output terminal of the main voltage obtaining unit 32 through the fixed resistor R13, and an emitter connected to the ground. The transistor Q12 has a base connected between the collector of the transistor Q11 and the fixed resistor R13, a collector connected to the gate of the PMOS transistor Q13, and an emitter connected to ground. The source of the PMOS transistor is connected to the output terminal of the main voltage obtaining unit 32, and the drain of the PMOS transistor serves as the output terminal of the switching circuit 332 to externally output the main supply voltage.
The output detection circuit 333 includes a fixed resistor R14 and a fixed resistor R15 connected in sequence between the output terminal of the switch circuit 332 and the ground, and a node between the fixed resistor R14 and the fixed resistor R15 outputs a main power detection signal as a detection terminal of the output detection circuit 333.
Referring to fig. 2, the control module 5 includes a preset voltage signal output source 51 for outputting a preset voltage signal, and a voltage comparator OA1 for comparing the preset voltage signal with the main power detection signal, wherein a non-inverting terminal of the voltage comparator OA1 is electrically connected to the preset voltage signal output source 51, and an inverting terminal of the voltage comparator OA1 is electrically connected to the detection terminal of the detection switch unit 33. The voltage comparator OA1 compares the main power supply detection signal with a preset voltage signal and outputs a control signal at an output terminal to the external voltage switching unit 42 based on the comparison result.
The external power switching module 4 includes an external voltage obtaining unit 41 for connecting with the external power 40, and an external voltage switching unit 42 for controlling connection or disconnection between the external power 40 and the boiler 2.
The external voltage obtaining unit 41 includes an inductor L2, and an inductor L2 is connected in series with the positive electrode of the external power source 40 and outputs the external obtaining voltage at a terminal far from the external voltage.
The external voltage switching unit 42 includes an NPN transistor Q21, a PMOS transistor Q22, and a fixed resistor R21. The base electrode of the triode Q21 is a control end and is electrically connected with the output end of the control module 5; the collector of the triode Q21 is connected with the grid of the PMOS tube Q22 and is also connected with the source of the PMOS tube Q22 through a fixed resistor R21; the emitter of transistor Q21 is connected to ground. The source of the PMOS transistor Q22 is connected to the output terminal of the external voltage obtaining unit 41, and the drain serves as the output terminal of the external switching unit to externally output the external supply voltage.
Referring to fig. 2, the temperature control module 6 includes a temperature sensor 61 (refer to fig. 1) provided in the greenhouse 1 to detect the indoor temperature, a preset temperature signal output source 62 for outputting a preset temperature signal, a comparison module connected to the temperature sensor 61 and the preset temperature signal output source 62, and a relay. The comparison module comprises a voltage comparator OA2, the output end of the preset temperature signal output source 62 is connected to the non-inverting end of the voltage comparator OA2, and the output end of the temperature sensor 61 is connected to the inverting end of the voltage comparator OA 2. The relay comprises a solenoid KM and a relay switch K1, wherein one end of the solenoid KM is connected to the output end of a voltage comparator OA2, and the other end is connected to the ground wire. One end of the relay switch K1 is connected to the boiler 2, and the other end is connected to the output terminal of the switching circuit 332 through a diode D12, and also to the output terminal of the external voltage switching unit 42 through a diode D21. The cathodes of the diode D12 and the diode D21 are both connected to the relay switch K1.
The implementation principle of the flower greenhouse 1 heating system is as follows:
when the external power supply 40 is connected to the external power supply switching module 4, the main voltage obtaining unit 32 obtains the voltage input by the external power supply 40 and outputs the main obtained voltage to the detection switch unit 33, the detection switch unit 33 controls the on/off of the main power supply controllable switch according to the magnitude of the main obtained voltage, and when the main power supply controllable switch is connected, the detection switch unit 33 outputs the main power supply voltage. The detection switch unit 33 detects the main power supply voltage and outputs a main power supply detection signal to the control module 5. When the external illumination is continuously insufficient, the power of the solar battery 31 is reduced, and when the power of the solar battery 31 is reduced to a certain degree, the main power detection signal is also reduced correspondingly. When the main power detection signal is weaker than the preset voltage signal, the control module 5 sends a corresponding control signal to the control end, the control signal connects the external power controllable switch, and the external voltage controllable switch outputs external power supply voltage to the load. When the electric quantity of the solar battery 31 is relatively sufficient, the main power supply detection signal is stronger than the preset voltage signal, the control module 5 sends a corresponding control signal to the control end, the control signal turns off the external voltage controllable switch, and at the moment, the load is supplied with power by the main power supply voltage.
The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.
Claims (7)
1. A flower greenhouse heating system comprises a greenhouse (1), and is characterized by further comprising a main power supply switching module (3), an external power supply switching module (4) and a control module (5);
the main power supply switching module (3) comprises:
the solar cell (31), the solar cell (31) is installed on the top of the greenhouse (1);
a main voltage acquisition unit (32) including an input terminal electrically connected to the solar cell (31) and an output terminal for outputting a main acquisition voltage;
a detection switch unit (33) that receives the main acquisition voltage and outputs a corresponding main power supply voltage, the detection switch unit (33) including a main power controllable switch, the detection switch unit (33) controlling on/off of the main power controllable switch based on a magnitude of the main acquisition voltage; the detection switch unit (33) further comprises a detection end for detecting the main supply voltage and outputting a main supply detection signal;
the external power supply switching module (4) comprises:
an external voltage acquisition unit (41) including an input terminal for electrically connecting with an external power supply (40) and an output terminal for outputting an external acquisition voltage;
the external voltage switch unit (42) comprises an external voltage controllable switch, an input end for receiving external acquired voltage, an output end for outputting external power supply voltage and a control end for controlling the on-off of the external voltage controllable switch;
the control module (5) comprises:
a preset voltage signal output source (51) for outputting a preset voltage signal;
the input end of the control module (5) is electrically connected with the detection end of the detection switch unit (33), compares the main power supply detection signal with a preset voltage signal, and outputs a control signal to the control end of the external voltage switch unit (42) based on the comparison result.
2. A flower greenhouse warming system as claimed in claim 1, wherein the detection switch unit (33) comprises:
an input detection circuit (331) provided at both ends of the main voltage acquisition unit (32) for detecting a main power acquisition voltage exceeding a threshold value and outputting a main power acquisition voltage detection signal based on the main power acquisition voltage;
the switch circuit (332) is arranged at two ends of the main voltage acquisition unit (32), receives the main acquisition voltage, outputs the corresponding main power supply voltage, comprises the main power supply controllable switch, and controls the on-off of the main power supply controllable switch based on the magnitude of the main power supply acquisition voltage detection signal;
the output detection circuit (333) is arranged at the output end of the switch circuit (332) and comprises the detection end, and the output detection circuit (333) outputs a main power supply detection signal based on the size of the main power supply voltage.
3. A flower greenhouse warming system as claimed in claim 2, wherein the control module (5) further comprises a voltage comparator, the non-inverting terminal of the voltage comparator is electrically connected to the preset voltage signal output source (51), the inverting terminal of the voltage comparator is electrically connected to the detection terminal of the detection switch unit (33), and the output terminal of the voltage comparator is electrically connected to the control terminal of the external voltage switch unit (42).
4. A flower greenhouse warming system according to claim 3, wherein the external voltage controllable switch comprises a PMOS transistor and an NPN type triode, the source of the PMOS transistor is the input terminal of the external voltage controllable switch, the gate is electrically connected to the source through a fixed resistor, and the drain is the output terminal of the external voltage controllable switch; the source electrode of the triode is a control end, the collector electrode of the triode is electrically connected with the grid electrode of the PMOS tube, and the emitter electrode of the triode is connected with the ground wire.
5. A flower greenhouse warming system as claimed in claim 4, further comprising a boiler (2), said boiler (2) being connected with a water inlet pipe (21) and a water return pipe (22) leading into the greenhouse (1).
6. A flower greenhouse warming system according to claim 5, further comprising a temperature control module (6), wherein the temperature control module (6) comprises a temperature sensor (61) disposed in the greenhouse (1) to detect the indoor temperature, a preset temperature signal output source (62) for outputting a preset temperature signal, a comparison module connected to the temperature sensor (61) and the preset temperature signal output source (62), and a relay, the temperature sensor (61) is used for detecting the temperature in the greenhouse (1) and outputting a corresponding temperature detection signal, the comparison module controls the on-off of the relay switch based on the comparison result of the temperature detection signal and the preset temperature signal, and the output end of the main power switching module (3) and the output end of the external power switching module (4) are electrically connected to the boiler (2) through the relay switch.
7. A flower greenhouse warming system according to claim 6, wherein the solar cells (31) are arranged at intervals on top of the greenhouse (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290452.9U CN211241043U (en) | 2019-12-17 | 2019-12-17 | Flower greenhouse heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290452.9U CN211241043U (en) | 2019-12-17 | 2019-12-17 | Flower greenhouse heating system |
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| Publication Number | Publication Date |
|---|---|
| CN211241043U true CN211241043U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922290452.9U Active CN211241043U (en) | 2019-12-17 | 2019-12-17 | Flower greenhouse heating system |
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| Country | Link |
|---|---|
| CN (1) | CN211241043U (en) |
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2019
- 2019-12-17 CN CN201922290452.9U patent/CN211241043U/en active Active
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