Power supply system of agricultural greenhouse

Abstract

The utility model discloses a power supply system for an agricultural greenhouse. The power supply system comprises a power utilization device, a controller system, a power supply selection unit, a solar power supply device and a mains supply device, the output end of the power supply selection unit is connected with the input end of the power utilization device; the input end of the power utilization device is connected with the controller system; the solar power supply device and the commercial power supply device are connected with the input end of the power selection unit. The power supply selection unit comprises an equivalent diode module D1 and an equivalent diode module D2, the output ends of the equivalent diode module D1 and the equivalent diode module D2 are connected, and the connection point of the output ends of the equivalent diode module D1 and the equivalent diode module D2 is connected with the power utilization device; the output end of the solar power supply device is connected with the input end of the equivalent diode module D1, and the output end of the commercial power supply device is connected with the input end of the equivalent diode D2. Through the system, the power utilization reliability of the agricultural greenhouse can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agriculture, in particular to a temperature control system for an agricultural greenhouse. Background Art

[0002] As a modern agricultural production method, agricultural greenhouses are widely used in the planting and production of agricultural products such as vegetables and fruits. It creates ideal environmental conditions for the growth of crops by regulating environmental parameters, including temperature, humidity, light intensity, etc., thereby improving the production efficiency and quality of crops. At the same time, agricultural greenhouses can also protect crops and effectively prevent them from being damaged when encountering problems such as bad weather or pests and diseases. Therefore, the application of agricultural greenhouses is becoming more and more widespread.

[0003] However, agricultural greenhouses require long-term temperature regulation, humidity regulation, and light regulation to adjust a suitable growth environment for crops and improve the survival rate and growth rate of crops. However, existing temperature regulation devices, humidity regulation devices, and light regulation devices are generally powered by city electricity, and agricultural greenhouses are generally located in remote areas, and circuit failures often occur, so the power supply of electrical equipment cannot be guaranteed, so it is impossible to adjust the growth environment of crops in the greenhouse in time, causing great harm to the production of crops. Summary of the invention

[0004] Based on this, in order to solve the above technical problems, a power supply system for an agricultural greenhouse is provided to solve the problem that the existing technology cannot guarantee the reliability of power supply to electrical equipment.

[0005] In a first aspect, a power supply system for an agricultural greenhouse, the system comprising: a power consumption device, a controller system, a power selection unit, a solar power supply device, and a city power supply device;

[0006] The output end of the power selection unit is connected to the input end of the power-consuming device;

[0007] The input end of the electrical device is connected to the controller system;

[0008] The solar power supply device and the mains power supply device are respectively connected to the input end of the power selection unit;

[0009] The power selection unit includes: an equivalent diode module D1 and an equivalent diode module D2, the output ends of the equivalent diode module D1 and the equivalent diode module D2 are connected, and the output end connection point of the equivalent diode module D1 and the equivalent diode module D2 is connected to the power-consuming device; the output end of the solar power supply device is connected to the input end of the equivalent diode module D1, and the output end of the AC power supply device is connected to the input end of the equivalent diode module D2.

[0010] In the above solution, optionally, the equivalent diode module D1 and the equivalent diode module D2 have the same circuit structure, including: a MOS tube Q1, a voltage regulator diode D3 and a voltage regulator diode D4, resistors R2, R3, R4 and an operational amplifier U1A;

[0011] The same-direction output terminal and the reverse output terminal of the operational amplifier U1A are respectively connected to the two ends of the voltage-stabilizing diode D3, one end of the voltage-stabilizing diode D3 connected to the same-direction output terminal of the operational amplifier U1A is connected to one end of the resistor R2, one end of the voltage-stabilizing diode D3 connected to the reverse output terminal of the operational amplifier U1A is connected to the resistor R4, the input terminal of the operational amplifier U1A is connected to one end of the resistor R3, the other end of the resistor R2 and the other end of the resistor R3 are respectively connected to the two ends of the voltage-stabilizing diode D4; the other end of the resistor R2 is also connected to the S pole of the MOS tube Q1, the other end of the resistor R3 is also connected to the G pole of the MOS tube Q1, and the other end of the resistor R4 is also connected to the D pole of the MOS tube Q1.

[0012] In the above solution, optionally, the solar power supply device includes a solar panel and a battery, and the solar panel and the battery are connected in series and then connected to the input end of the power selection unit.

[0013] In the above solution, optionally, the AC power supply device adopts a 220V voltage.

[0014] In the above solution, optionally, the output end of the controller system is connected to a display.

[0015] In the above scheme, further optionally, the display is an LED display.

[0016] In the above scheme, optionally, the electrical device includes: heating equipment, spraying equipment, and lighting equipment.

[0017] This application has at least the following beneficial effects:

[0018] The present application uses a mains power supply device and a solar power supply device to simultaneously supply power to electrical equipment in an agricultural greenhouse. The mains power supply device and the solar power supply device are simultaneously connected to a power selection unit, and the power selection unit selects the end with a higher output voltage for power supply. Therefore, even if the mains power fails, solar power can still be used to provide electricity for the agricultural greenhouse, thereby ensuring the reliability of electricity use in the agricultural greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A circuit structure diagram of a power supply system for an agricultural greenhouse is provided for one embodiment of the present application;

[0020] Figure 2 A specific circuit structure diagram of a power selection unit provided in one embodiment of the present application;

[0021] Figure 3 A specific circuit structure diagram of an equivalent diode module D1 and an equivalent diode module D2 provided in one embodiment of the present application;

[0022] Figure 4 A detailed structural diagram of a solar power supply device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] In one embodiment, Figure 1 As shown, a power supply system for an agricultural greenhouse is provided, the system comprising: a power consumption device, a controller system, a power selection unit, a solar power supply device, and a city power supply device;

[0025] The output end of the power selection unit is connected to the input end of the power-consuming device;

[0026] The input end of the electrical device is connected to the controller system;

[0027] The solar power supply device and the mains power supply device are respectively connected to the input end of the power selection unit;

[0028] The power selection unit includes: an equivalent diode module D1 and an equivalent diode module D2, the output ends of the equivalent diode module D1 and the equivalent diode module D2 are connected, and the output end connection point of the equivalent diode module D1 and the equivalent diode module D2 is connected to the power-consuming device; the output end of the solar power supply device is connected to the input end of the equivalent diode module D1, and the output end of the AC power supply device is connected to the input end of the equivalent diode module D2.

[0029] Specifically, Figure 2 As shown in the figure, it is a schematic diagram of the specific structure of the power selection unit; the current output by the output voltage VOUT is always taken from the power supply with the highest voltage among the input voltages VIN1 and VIN2, and only the MOS tube with the highest input voltage VIN is turned on, and the operational amplifier corresponding to this MOS tube is forward biased while the other operational amplifiers are reverse biased; and the internal resistance of the MOS tube in the circuit is very low (as low as milliohm level), which will greatly reduce the loss of the diode.

[0030] In the above-mentioned power supply system for an agricultural greenhouse, power is supplied to the electrical equipment in the agricultural greenhouse by both a mains power supply device and a solar power supply device. The mains power supply device and the solar power supply device are simultaneously connected to a power selection unit, and the power selection unit selects the end with a higher output voltage for power supply. Thus, even if the mains power fails, solar power can be used to provide electricity for the agricultural greenhouse, thereby ensuring the reliability of electricity supply to the agricultural greenhouse.

[0031] In one embodiment, Figure 3 As shown, the circuit structure of the equivalent diode module D1 and the equivalent diode module D2 is the same, including: MOS tube Q1, voltage regulator diode D3 and voltage regulator diode D4, resistors R2, R3, R4 and operational amplifier U1A;

[0032] The same-direction output terminal and the reverse output terminal of the operational amplifier U1A are respectively connected to the two ends of the voltage-stabilizing diode D3, one end of the voltage-stabilizing diode D3 connected to the same-direction output terminal of the operational amplifier U1A is connected to one end of the resistor R2, one end of the voltage-stabilizing diode D3 connected to the reverse output terminal of the operational amplifier U1A is connected to the resistor R4, the input terminal of the operational amplifier U1A is connected to one end of the resistor R3, the other end of the resistor R2 and the other end of the resistor R3 are respectively connected to the two ends of the voltage-stabilizing diode D4; the other end of the resistor R2 is also connected to the S pole of the MOS tube Q1, the other end of the resistor R3 is also connected to the G pole of the MOS tube Q1, and the other end of the resistor R4 is also connected to the D pole of the MOS tube Q1.

[0033] Specifically, the equivalent diode module D1 and the equivalent diode module D2 are the same modules with the same structure and the same function; when the mains power works normally, the mains voltage is higher than the solar power supply, therefore, the MOS tube of the equivalent diode module D2 is forward biased, and the MOS tube of the equivalent diode module D1 is reverse biased, and the mains power is used for power supply; when the mains power fails, the mains voltage is 0, and the mains voltage is lower than the solar power supply, therefore, the MOS tube of the equivalent diode module D1 is forward biased, and the MOS tube of the equivalent diode module D2 is reverse biased, and the solar energy is used for power supply.

[0034] In this embodiment, MOS tubes are used for voltage isolation. The internal resistance of the MOS tubes in the circuit is very low (as low as milliohms), which will greatly reduce the loss of the diode. For example, if a MOS tube with an internal resistance of several milliohms is used, if the current is 10 amperes, the corresponding MOS tube power loss is only a few hundred milliwatts.

[0035] In one embodiment, Figure 4 As shown, the solar power supply device includes the solar panel and the battery, and the solar panel and the battery are connected in series and then connected to the input end of the power selection unit.

[0036] In one embodiment, the mains power supply device uses a 220V voltage.

[0037] In one embodiment, an output of the controller system is connected to a display.

[0038] In this embodiment, the output end of the controller system is connected to the display, and the display is used to display the data processed by the controller system for viewing by the user.

[0039] In one embodiment, the display is a LED display.

[0040] In one embodiment, the electrical devices include: heating equipment, spraying equipment, and lighting equipment.

[0041] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A power supply system for an agricultural greenhouse, characterized in that: The system comprises: an electric device, a controller system, a power selection unit, a solar power supply device, and a mains power supply device; The output end of the power selection unit is connected to the input end of the power-consuming device; The input end of the electrical device is connected to the controller system; The solar power supply device and the mains power supply device are respectively connected to the input end of the power selection unit; The power selection unit includes: an equivalent diode module D1 and an equivalent diode module D2, the output ends of the equivalent diode module D1 and the equivalent diode module D2 are connected, and the output end connection point of the equivalent diode module D1 and the equivalent diode module D2 is connected to the power-consuming device; the output end of the solar power supply device is connected to the input end of the equivalent diode module D1, and the output end of the AC power supply device is connected to the input end of the equivalent diode module D2.

2. The power supply system for agricultural greenhouse according to claim 1, characterized in that: The circuit structure of the equivalent diode module D1 and the equivalent diode module D2 is the same, including: a MOS tube Q1, a voltage regulator diode D3 and a voltage regulator diode D4, resistors R2, R3, R4 and an operational amplifier U1A; The same-direction output terminal and the reverse output terminal of the operational amplifier U1A are respectively connected to the two ends of the voltage-stabilizing diode D3, one end of the voltage-stabilizing diode D3 connected to the same-direction output terminal of the operational amplifier U1A is connected to one end of the resistor R2, one end of the voltage-stabilizing diode D3 connected to the reverse output terminal of the operational amplifier U1A is connected to the resistor R4, the input terminal of the operational amplifier U1A is connected to one end of the resistor R3, the other end of the resistor R2 and the other end of the resistor R3 are respectively connected to the two ends of the voltage-stabilizing diode D4; the other end of the resistor R2 is also connected to the S pole of the MOS tube Q1, the other end of the resistor R3 is also connected to the G pole of the MOS tube Q1, and the other end of the resistor R4 is also connected to the D pole of the MOS tube Q1.

3. The power supply system for agricultural greenhouse according to claim 1, characterized in that: The solar power supply device comprises a solar panel and a storage battery; the solar panel and the storage battery are connected in series and then connected to the input end of the power selection unit.

4. The power supply system for agricultural greenhouse according to claim 1, characterized in that: The mains power supply device adopts 220V voltage.

5. The power supply system for agricultural greenhouse according to claim 1, characterized in that: The output end of the controller system is connected to a display.

6. The power supply system for agricultural greenhouse according to claim 5, characterized in that: The display is an LED display.

7. The power supply system for agricultural greenhouse according to claim 1, characterized in that: The electrical devices include: heating equipment, spraying equipment, and lighting equipment.

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