CN112106629A - Intelligent watering system based on adunono and control method thereof - Google Patents

Abstract

An intelligent watering system based on Arduino Nano and a control method thereof, comprising an Arduino Nano control board, the A0 end of the Arduino Nano control board is connected with a humidity sensor; the humidity sensor is inserted into the soil of a flowerpot There is a water pipe above the flower pot; the water pipe is connected to the water pump; the water pump is connected to the Arduino Nano control board through a relay; the water pump is also connected to the water tank; the water tank is provided with a liquid level sensor; The D2 end of the Nano control board is connected; the soil moisture sensor collects data from the flowerpot, and the Arduino Nano control board processes the data collected by the soil moisture sensor, and then judges the soil moisture. When it is detected that the soil moisture is higher than the set value When the threshold value is reached, it is considered that the soil is short of water, and one relay turns on the water pump according to the signal sent by the Arduino Nano control board to perform the watering action; it has intelligent identification and judgment of soil water shortage, low cost, fast use, light size, and easy installation. Features.

Description

An intelligent watering system based on Arduino Nano and its control method

technical field

The invention belongs to the technical field of irrigation, and in particular relates to an intelligent watering system based on Arduino Nano and a control method thereof.

Background technique

Today, when green civilization is advocated, the number of people who grow plants in daily life is increasing. It is especially common in campuses and offices. The level of water content in the soil is particularly important for the healthy growth of plants. watering. Therefore, it is very necessary to design a system that can automatically perform watering activities according to soil moisture without unattended management.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide an intelligent watering system based on Arduino Nano and a control method thereof, which has the advantages of intelligent identification and judgment of soil water shortage, low cost, quick use and light volume. , Easy installation, long life characteristics.

In order to achieve the above purpose, the technical solution adopted in the present invention is: an intelligent watering system based on Arduino Nano, comprising an Arduino Nano control board, an A0 end of the Arduino Nano control board and a humidity sensor connected; the humidity sensor is inserted into the soil of the flower pot; the water pipe is arranged above the flower pot; the water pipe is connected with the water pump; the water pump is connected with the Arduino Nano control board through the relay; the water pump is also connected with the water tank; Sensor; the liquid level sensor is connected to the D2 terminal of the Arduino Nano control board.

A switch is provided on the circuit between the water pump and the relay.

The humidity sensor is a soil humidity sensor.

The said water pump adopts 365 water pump.

The relay adopts a one-way relay.

The liquid level sensor adopts a non-contact liquid level sensor, which is arranged on the side of the water tank.

The soil moisture sensor The soil moisture sensor adopts a capacitive soil moisture sensor, which has very good soil corrosion resistance, and is located in the soil of the flowerpot.

The Arduino Nano control board is connected with the computer.

The soil moisture sensor is one, which is arranged in the soil of the flowerpot and is used to detect the soil moisture in the flowerpot.

One relay controls the 365 water pump to perform watering action or stop watering action through the closing of com terminal (common terminal) and no (normally open terminal).

The non-contact liquid level sensor is provided with a red LED light, and the LED light is used to indicate whether the water volume in the water tank is sufficient.

The Arduino nano control board 1 can also be connected to a computer, and the soil moisture value can be directly read through the serial monitor in the Arduino IDE software.

The Arduino nano control board 1 can also be connected to a computer, and the control program can be modified through the Arduino IDE software to meet the soil moisture requirements of different plants, and uploaded to the Arduino nano. Control Board 1.

A control method for an intelligent watering system based on Arduino Nano, characterized in that it comprises the following steps:

The output end of the humidity sensor (2) is connected to the A0 interface of the Arduino Nano control board (1), the control end input of the relay (9) is connected to the D6 interface of the Arduino Nano control board (1), and the liquid level sensor (8) The input terminal is connected to the D2 interface of the Arduino Nano control board (1), and the integer data y and b are respectively stored to store the value read by the humidity sensor (2), the value read by the liquid level sensor (8), an integer Type a represents the humidity threshold set in advance. Users can modify this value according to the needs of their plants. The modification range is: 210-700. The larger the value, the lower the humidity, and vice versa; when the b value is read as low The level indicates that the water tank (7) is short of water. Regardless of whether the soil is short of water, the 6-pin output high level pump is always off; when the b value is read as a high level, it indicates that the water tank (7) has sufficient water, and the y value When it is greater than the pre-set threshold a, it means the soil is short of water, and pin 6 outputs a low level to turn on the water pump. When the value of y is lower than the pre-set threshold a, it means that the soil is not short of water, and pin 6 outputs a high level to turn off the water pump; The baud rate is set to 9600, and the user can connect to the Arduino Nano control board (1) to the computer, and view the real-time soil moisture data through the serial port display function.

Beneficial effects of the present invention:

Since the invention is provided with a soil moisture sensor, it has the characteristics of obtaining soil moisture information, and the system collects information through the soil moisture sensor; since the Arduino nano control board is connected to the detector through the soil moisture sensor, and the One relay is connected to the water pump; it makes watering activities smart, simple and convenient; the soil moisture sensor adopts a capacitive soil moisture sensor, which has very good resistance to soil corrosion and improves the service life; through the non-contact liquid level sensor It is connected to the water tank. If the water level is lower than the set water level, the 365 water pump will not work regardless of the soil humidity, which ensures the life of the 365 water pump and the safety of the entire system. The traditional water direct detection sensor is easy to leak and the circuit is easy to be corroded; the internal control program is open source, and when facing different plants, it is only necessary to simply adjust the soil moisture threshold in the control program.

This system is suitable for use in school campuses, as well as in various white-collar offices. At the same time, this system can also be extended to the automatic watering management of vegetables and gardens, which has a positive effect on the realization of intelligent agricultural watering.

Description of drawings

1 is a schematic diagram of the hardware flow of the watering system of the present invention.

Fig. 2 is a schematic diagram of the software flow of the watering system of the present invention.

FIG. 3 is a schematic diagram of the circuit principle of the watering system of the present invention.

FIG. 4 is a schematic diagram of an embodiment of the present invention.

FIG. 5 is a schematic diagram of the connection between the Arduino Nano control board, the humidity sensor and the relay according to the present invention.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

1, 3, and 5, an intelligent watering system based on Arduino Nano includes an Arduino Nano control board 1, and the A0 end of the Arduino Nano control board 1 is connected to a humidity sensor 2; The humidity sensor 2 is inserted into the soil of the flower pot 3; a water pipe 5 is arranged above the flower pot 3; the water pipe 5 is communicated with the water pump 6; The water tank 7 is provided with a liquid level sensor 8; the liquid level sensor 8 is connected to the D2 end of the Arduino Nano control board 1.

A switch is provided on the circuit between the water pump 6 and the relay.

The humidity sensor 2 is a soil humidity sensor.

The said water pump adopts 365 water pump.

The relay adopts a one-way relay.

The liquid level sensor adopts a non-contact liquid level sensor, which is arranged on the side of the water tank.

The Arduino Nano control board 1 is also connected to the soil moisture sensor through the VCC terminal and the GND terminal; the 4 pins, 9 pins and 17 pins of the Arduino Nano control board 1 are respectively connected to the GND terminal, IN terminal and VCC terminal of the relay. connected.

The soil moisture sensor is one, which is arranged in the soil of the flowerpot and is used to detect the soil moisture in the flowerpot.

The Arduino nano control board 1 is connected to the computer.

The non-contact liquid level sensor is one, which is arranged on the side of the water tank to detect the level of the water level in the water tank. If the water level is lower than the set water level, the 365 water pump will not work regardless of the soil humidity, which ensures the life of the 365 water pump. The safety of the entire system, because the use of an external contact liquid level sensor can greatly improve the service life, avoiding the characteristics of traditional water direct detection sensors that are easy to leak and easy to corrode circuits;

The threshold for judging soil moisture is controlled by the program, not by the soil moisture sensor itself, which prevents the system from working incorrectly after the soil moisture sensor malfunctions.

The water outlet end of the water pipe 5 is connected to a plurality of water outlets through the water pipe joint 10, and 6 groups of different flowerpots 3 are respectively watered; the 365 water pump is arranged on the water pipe.

The relay will work according to the information sent by the Arduino nano control board to realize the closing of the com terminal (common terminal) and the no (normally open terminal).

A relay through the com terminal (common terminal) and no (normally open terminal) is closed to control the 365 water pump to perform the watering action or stop the watering action.

The soil moisture sensor transmits different soil moisture information to the Arduino nano control board according to different soil moisture.

The outside of the water tank is equipped with a non-contact liquid level sensor, the non-contact liquid level sensor is connected to the Arduinonano control board, and the non-contact liquid level sensor has a red LED light, and the LED light is used to prompt Is there enough water in the tank.

The Arduino nano control board 1 can also be connected to a computer, and the soil moisture value can be directly read through the serial monitor in the Arduino IDE software.

The control program in the Arduino nano control board 1 is open source and can be modified manually. When facing different plants, the soil moisture threshold in the program can be adjusted, and the program contains multiple judgment conditions, which can ensure the stable operation of the system. The sensor malfunctions and malfunctions.

The water pipe joint 10 is a six joint, which can simultaneously water six pots or less of the same plant or plants with similar soil water content requirements.

Taking six pots of plants as an example to illustrate the working principle of the present invention, as shown in Figure 2 and Figure 4, the soil moisture sensor collects data from any one of the flower pots. When the Arduino Nano control board 1 collects data from the soil moisture sensor After processing, the soil moisture is judged. When it is detected that the soil moisture is higher than the set threshold, it is considered that the soil is short of water, and one relay turns on the 365 water pump according to the signal sent by the Arduino Nano control board 1, and performs the watering action. When it is detected that the soil humidity is lower than or equal to the set threshold, it is considered that the soil is not lacking in water, and a relay turns off the 365 water pump according to the signal sent by the Arduino Nano control board, and closes the watering action. Whether the 365 water pump is turned on or off, it is done when the non-contact liquid level sensor detects that the water volume of the water tank is sufficient; if the non-contact liquid level sensor detects that the water volume of the water tank 7 is lower than the set water level, the 365 water pump 6 will No action will be taken.

The outside of the water tank is equipped with a non-contact liquid level sensor, which is connected to the Arduino nano control board. The non-contact liquid level sensor has a red LED light. When the water volume is lower than the set water level, the LED light is always on, indicating that There is not enough water, and any work on the 365 pump is stopped.

The Arduino nano control board can also be connected to a computer, and the real-time soil moisture value can be read through the serial monitor function of the Arduino IDE software, and the internal control program can be modified to meet the soil moisture requirements of different plants and upload to Arduino Arduino nano control board 1.

Internal Control:

The output terminal of humidity sensor 2 is connected to the A0 interface of the Arduino Nano control board 1, the input terminal of the relay 9 is connected to the D6 interface of the Arduino Nano control board 1, and the input terminal of the liquid level sensor 8 is connected to the Arduino Nano control board. 1's D2 interface, establish integer data y, b respectively store the value read by humidity sensor 2 and the value read by liquid level sensor 8, the integer a represents the humidity threshold set in advance, the user can according to their own plants. This value needs to be modified, the modification range is: 210-700, the larger the value, the lower the humidity, and vice versa; when the b value is read as a low level, it means that the water tank 7 is short of water, regardless of whether the soil is short of water, 6 The pin outputs a high level and the water pump is always off; when the b value is read as a high level, it means that the water in the tank 7 is sufficient, when the y value is greater than the pre-set threshold a, it means the soil is short of water, and the 6 pin outputs a low level Turn on the water pump, when the value of y is lower than the pre-set threshold value a, it means the soil is not short of water, and pin 6 outputs a high level to turn off the water pump; the baud rate is set to 9600, the user can connect to the Arduino Nano control board 1 to The computer can view the real-time soil moisture data through the serial port display function.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, These simple modifications belong to the protection scope of the present invention.

In addition, the various embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the contents disclosed in the present invention.

Claims (10)

1. An intelligent watering system based on Arduino Nano, characterized in that it includes an Arduino Nano control board (1), an A0 end of the Arduino Nano control board (1) and a humidity sensor ( 2) Connected; the humidity sensor (2) is inserted into the soil of the flower pot (3); a water pipe (5) is arranged above the flower pot (3); the water pipe (5) is connected with the water pump (6); The Arduino Nano control board (1) is connected; the water pump (6) is also connected to the water tank (7); the water tank (7) is provided with a liquid level sensor (8); the liquid level sensor (8) is connected to the Arduino Nano Connect to the D2 terminal of the Nuo control board (1). 2. An Arduino Nano-based intelligent watering system according to claim 1, characterized in that a switch is provided on the circuit between the water pump (6) and the relay. 3. An Arduino Nano-based intelligent watering system according to claim 1, wherein the humidity sensor (2) adopts a soil humidity sensor. 4. A kind of intelligent watering system based on Arduino Nano according to claim 1, is characterized in that, described water pump adopts 365 water pump. 5 . The intelligent watering system based on Arduino Nano according to claim 1 , wherein the relay adopts one relay. 6 . 6 . The Arduino Nano-based intelligent watering system according to claim 1 , wherein the liquid level sensor adopts a non-contact liquid level sensor and is arranged on the side of the water tank. 7 . 7. A kind of intelligent watering system based on Arduino Nano according to claim 1, is characterized in that, described soil moisture sensor adopts capacitive soil moisture sensor, has very good anti-soil corrosion ability, and is set. in pot soil. 8 . The Arduino Nano-based intelligent watering system according to claim 1 , wherein the Arduino Nano control board 1 is connected to a computer. 9 . 9. A kind of intelligent watering system based on Arduino Nano according to claim 1, is characterized in that, described Arduino Nano control board 1 is connected with computer to realize that internal control program can be modified and uploaded to Arduino Nano Control Board (1). 10. A control method of an intelligent watering system based on Arduino Nano, characterized in that, comprising the following steps: The output end of the humidity sensor (2) is connected to the A0 interface of the Arduino Nano control board (1), the control end input of the relay (9) is connected to the D6 interface of the Arduino Nano control board (1), and the liquid level sensor (8) The input terminal is connected to the D2 interface of the Arduino Nano control board (1), and the integer data y and b are respectively stored to store the value read by the humidity sensor (2), the value read by the liquid level sensor (8), an integer Type a represents the humidity threshold set in advance. Users can modify this value according to the needs of their plants. The modification range is: 210-700. The larger the value, the lower the humidity, and vice versa; when the b value is read as low The level indicates that the water tank (7) is short of water. Regardless of whether the soil is short of water, the 6-pin output high level pump is always off; when the b value is read as a high level, it indicates that the water tank (7) has sufficient water, and the y value When it is greater than the pre-set threshold a, it means that the soil is short of water, and pin 6 outputs a low level to turn on the water pump. When the value of y is lower than the pre-set threshold a, it means that the soil is not short of water, and pin 6 outputs a high level to turn off the water pump; The baud rate is set to 9600, and the user can connect to the Arduino Nano control board (1) to the computer, and view the real-time soil moisture data through the serial port display function.

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