CN209057709U - An agricultural monitoring device based on the Internet of Things - Google Patents

Abstract

A kind of agricultural monitoring device based on Internet of Things, there is the water tank of removable cover including upper end, water pump and several hoses, the lower middle part of water tank is equipped with connecting tube, return pipe is installed on the right-hand end top of water tank, also there is irrigation pipe, Switching Power Supply, water level switch, detection circuit, detecting head, circuit for remotely controlling, solenoid valve, short message transmitting line, water level switch is mounted on water tank lower inside, detection circuit, Switching Power Supply, circuit for remotely controlling, short message transmitting line is mounted in subassembly wrapper, and and solenoid valve, water pump, detecting head connection, water pump is connected with connecting tube, three-way connection is installed in the water outlet of water pump, two solenoid valves are connected with three-way connection, wherein the water outlet of a solenoid valve is connected with return pipe, irrigation pipe is connected with another solenoid valve, it is more that several hoses are respectively fitted over irrigation pipe right part upper end The outside of distributive pipe, in the soil that detecting head insertion crops need to irrigate.The utility model provides solid foundation to reading intelligent agriculture.

Description

An agricultural monitoring device based on the Internet of Things

technical field

The utility model relates to the field of intelligent agricultural equipment, in particular to an agricultural monitoring device based on the Internet of Things.

Background technique

With the development of science and technology, more and more advanced technologies, including the Internet of Things, have been applied in the field of agriculture, providing a technical foundation for smart agriculture. For example, the remote management personnel can view various sensors on the agricultural planting site in real time through the Internet devices around them (including mobile phones, PCs, tablet computers, etc.) etc.), in this way, the management personnel can learn various data of the crops on the spot even if they are not on the spot, and can go to the spot to carry out the corresponding operations when necessary to ensure the healthy growth of the crops. For example, the on-site soil moisture detection probe detects the When the soil is dry, managers can go to the site to irrigate crops to ensure the growth of crops.

However, in the application field of the existing agricultural Internet of Things technology, only one-way information transmission can be achieved. When crops need to be operated including irrigation, managers can only operate on the spot, so the purpose of smart agriculture cannot be effectively achieved.

Based on the above, it is particularly necessary to provide a device that can not only monitor the soil dryness and humidity data of crops in real time, but also irrigate crops remotely when needed.

Utility model content

In order to overcome the existing agricultural Internet of Things technology application field, only one-way information transmission can be achieved. When crops need operations including irrigation, managers can only operate on the spot, which cannot effectively realize the drawbacks of smart agriculture. The utility model provides a detector head installed on the crop site, the detector head can monitor the dry and humidity data of the soil in real time, and can automatically send a short message to the remote management personnel when the soil is too dry or the humidity is appropriate. After the remote management personnel receive the information , can remotely control the work of on-site water pumps and other equipment according to the needs, irrigate crops, and can achieve effective fertilization in irrigation, not only remote monitoring, but also remote crop irrigation operations, which brings convenience to managers. , an IoT-based agricultural monitoring device that provides a solid foundation for smart agriculture.

The technical scheme adopted by the utility model to solve its technical problems is:

An agricultural monitoring device based on the Internet of Things, comprising a water tank with a movable cover on the upper end, a water pump and several hoses, characterized in that a connecting pipe is installed in the lower middle part of the water tank, and a return pipe is installed on the upper part of the right end of the water tank, and the return pipe is installed in the lower middle part of the water tank. The upper left part of the water pipe is located at the upper right end of the water tank, and the right part of the return pipe is located outside the water tank. It also has irrigation pipes, switching power supplies, water level switches, detection circuits, detection heads, remote control circuits, solenoid valves, SMS sending circuits, and water level switches. Installed in the lower part of the inner side of the water tank, the detection circuit, switching power supply, remote control circuit, and short message sending circuit are installed on the circuit board, the circuit board is installed in the component box, the component box is installed in the lower front of the water tank, and the water pump is installed in the middle of the lower end of the water tank , the water inlet pipe of the water pump is connected with the lower middle connecting pipe of the water tank, a tee joint is installed in the water outlet end of the water pump, and the water inlet ends of two solenoid valves are connected with the two water outlet ends of the tee joint, one of which is a solenoid valve. The outlet end is connected with the lower right end of the return pipe, the irrigation pipe is connected with the outlet end of another solenoid valve, several hoses are respectively sleeved on the outside of the multiple water distribution pipes at the upper right end of the irrigation pipe, and the probe is inserted into the crops In the soil that needs to be irrigated, the power input end of the switching power supply and the 220V AC power supply are connected by wires. The positive pole of the power output of the power supply is connected to one end of the water level switch, the first positive power input of the detection circuit is connected by a wire, the other end of the water level switch is connected to the second positive power input of the detection circuit by a wire, and the negative pole of the power output of the switching power supply is connected to The negative power input end of the detection circuit is connected by a wire, the two copper rods of the detection head and the two signal input ends of the detection circuit are respectively connected by a wire, and the two signal output ends of the detection circuit are respectively connected with the two signal input ends of the short message sending circuit. Wire connection, one pole of the 220V AC power supply and the control power input terminal of the detection circuit are connected by wires, the control power output terminal of the detection circuit and the control power input terminal of the remote control circuit are connected by wires, and the three-way control power output terminal of the remote control circuit is connected by wires. It is connected with two solenoid valves and one of the power input ends of the water pump through a wire, and the other pole of the 220V AC power supply is connected with the other power input end of the two solenoid valves and the water pump through a wire.

The right end of the irrigation pipe is a closed structure, the upper end of the right part of the irrigation pipe is installed with a plurality of water distribution pipes from left to right, each hose has a plurality of openings at a certain distance, and the other end of the hose is a closed type. structure.

The switching power supply is a 220V AC to 6V DC switching power supply module.

The water level switch is a float level switch with two normally closed contacts inside.

The detection circuit includes a relay, an adjustable resistor, a resistor, and an NPN triode, which are connected through circuit board wiring. The positive power input end of the relay is connected to one end of the adjustable resistor, one end of the first resistor, and one end of the second resistor, and the adjustable resistor is connected. The other end is connected to the base of the first NPN triode, the other end of the first resistor is connected to the collector of the first NPN triode and the base of the second NPN triode, and the other end of the second resistor is connected to the collector of the second NPN triode Connection, the first NPN triode emitter and the second NPN triode emitter connection.

The detection head includes two metal copper rods and a plastic base plate, and the two copper rods are respectively installed on the lower ends of the plastic base plate.

The remote control circuit is a remote wireless controller. The remote wireless controller is equipped with three relays, which are connected through circuit board wiring. The three control power output terminals of the remote wireless controller are connected to the positive power input terminals of the three relays. , the negative power input terminal of the remote wireless controller is connected with the negative power input terminal of the three relays.

The two sets of short message sending circuits are the same, and the short message sending circuit is a GSM short message alarm module.

The solenoid valve is a 220V AC power solenoid water valve, and its internal valve core is a normally closed structure.

The beneficial effect of the utility model is: in the actual use of the utility model, for example, when it is used in orchards, the two copper rods of the probe head are inserted into the outermost end of one of several fruit trees that needs to irrigate the soil (it is best to select the most A fruit tree at the far end is inserted into the two copper rods of the probe), to ensure that the lower part of the inner end of one of the fruit trees is irrigated enough, and then the soil at the outermost end is infiltrated by the last water (there is a circular hole around the lower end of the fruit tree, and the two parts of the probe head. The copper rod is located at the outer end of the circular pit), and the inner sides of one end of several hoses are respectively covered on the outside of the multiple water distribution pipes, and then the several hoses are respectively moved to the lower ends of several fruit trees to ensure that one of the hoses is The opening is close to the side end of the root of one of the fruit trees, and the side end of the root of all fruit trees has a corresponding opening of a hose. During subsequent irrigation, each fruit tree can be effectively irrigated. In use, when the fruit tree is short of water, under the combined action of the detector head and the detection circuit, the short message sending circuit will send a short message to the manager's mobile phone through the wireless mobile network, the content is "soil water shortage", so that the manager can effectively To achieve the purpose of remotely monitoring the soil dryness and humidity of crops, when managers need to irrigate fruit trees, managers can use existing mature technologies and widely used mobile phones to remotely control the work or stop of electrical equipment. The APP, combined with the finished product of the remote wireless controller Use, in actual use, when the management personnel know that the fruit trees need to be irrigated remotely, they can use the APP installed on the mobile phone to control the two solenoid valves to turn on respectively, and control the water pump to work through the finished product of the remote wireless controller. The irrigation of fruit trees is realized at the far end, and the new model can also be combined with adding fertilizer in the water tank to irrigate fruit trees. Before irrigation, the water and fertilizer mixture in the water tank can be recoiled by the water pumped out by the water pump to achieve a good mixture of fertilizer and water. The purpose is to ensure that the tree will not have the problem of uneven fertilization after irrigation. After the fruit trees are irrigated, when the soil moisture reaches the required level, the short message sending circuit will send a short message to the manager's mobile phone through the wireless mobile network, the content is "sufficient water for crops", so that the manager can know that the water is sufficient in real time, and can immediately At the remote end, the closing of the solenoid valve and the closing of the water pump are controlled by the finished product of the remote wireless controller through the mobile phone APP, which ensures the effective operation of the whole set of equipment. Under the action of the water level switch, if there is no water in the water tank, the solenoid valve and the water pump will not be powered to work, which effectively prevents the water pump from idling and causing damage. The new model is not limited to the monitoring of soil dryness and humidity of fruit trees and automatic irrigation. It can be used for soil dryness and humidity monitoring and automatic irrigation of any crops, or it can only use the functions of soil dryness and humidity monitoring and text message prompting without irrigation. The new model adopts the existing mature technology, the mobile phone is installed with an APP to remotely control the work or stop of the electrical equipment, and it is used in combination with the finished product of the remote wireless controller. People bring convenience and provide a solid foundation for smart agriculture. Based on the above, the utility model has a good application prospect.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of the present utility model.

Figure 2 is a circuit diagram of the present utility model.

Detailed ways

As shown in FIG. 1, an agricultural monitoring device based on the Internet of Things includes a water tank 1 with a movable cover 2 on the upper end, a water pump 3 and several hoses 13, and a connecting pipe 1-1 is welded in the lower middle of the water tank 1, The connecting pipe 1-1 communicates with the inside of the water tank 1. A return pipe 1-2 is welded on the upper part of the right end of the water tank 1. The upper left part of the return pipe 1-2 is located at the upper right end of the water tank 1. The right part is located outside the water tank 1. There is a ventilation hole 2-1 in the middle of the upper end of the movable cover 2 to prevent the negative pressure inside the water tank 1. It also has an irrigation pipe 4, a switching power supply 5, a water level switch 6, a detection circuit 7, and a detection head 8. , remote control circuit 9, solenoid valves 10-1 and 10-2, short message sending circuit 11, water level switch 6 is installed in the lower left part of the inner side of water tank 1 through the screw nut, switching power supply 5, detection circuit 7, remote control circuit 9, SMS sending The circuit 11 is installed on the circuit board, the circuit board is installed in the component box 12, the component box 12 is installed on the lower front part of the water tank 1 through the screw nut, the water pump 3 is installed in the middle of the lower end of the water tank 1 through the screw nut, and the water inlet pipe of the water pump 3 It is connected with the lower middle connecting pipe 1-1 of the water tank through the pipe joint. A tee joint is installed in the water outlet end of the water pump 3. The water inlet ends of the two solenoid valves 10-1 and 10- and the two water outlets of the tee joint are installed. The ends are connected by pipe joints, and the outlet end of one solenoid valve 10-1 and the lower right end of the return pipe 1-2 are connected by pipe joints, and the other solenoid valve 10 is screwed into the other solenoid valve 10 through the external thread on the left side of the irrigation pipe 4. In the water outlet end of -2, connect the irrigation pipe 4 and the water outlet end of another solenoid valve 10-2 together, and several hoses 13 are respectively sleeved on the outside of the plurality of water distribution pipes 4-1 at the upper right end of the irrigation pipe 4 , the probe 8 is inserted into the soil where the crops need to be irrigated.

As shown in FIG. 1 , the outside of the left part of the irrigation pipe 4 has external threads, the right end of the irrigation pipe 4 is a closed structure, and the upper end of the right part of the irrigation pipe 4 is welded from left to right with a plurality of water distribution pipes 4-1. The inside of 4-1 communicates with the inside of irrigation pipe 4, the inside of one end of several hoses 13 is in close contact with the outside of several water distribution pipes 4-1, and the hose 13 has a plurality of openings 13-1 at a certain distance. , the other end of the hose 13 is a closed structure. The probe head 8 includes two metal copper rods 8-1 and a plastic base plate 8-2. The lower ends of the two copper rods 8-1 are inter-conical, and the upper ends of the two copper rods 8-1 have external threads. The seat plate 8-2 has two openings with internal threads spaced from left to right at a certain distance, and the outer threads of the upper ends of the two copper rods 8-1 are respectively screwed into the two openings of the plastic base plate 8-2. Inside the thread, install the two copper rods 8-1 on the lower ends of the plastic base plate 8-2 (the distance between the two copper rods 8-1 is 5mm). 8 When inserting crops into the soil that needs to be irrigated, insert two copper rods 8-1 into one of the crops that need to be irrigated and the outermost end of the soil that needs to be irrigated, such as one of several fruit trees that needs to be irrigated. Make sure that the lower part of the inner end of one of the fruit trees is sufficiently irrigated before the last water infiltrates the soil at the outermost end.

As shown in Figure 2, the switching power supply U1 is a finished product of the 220V AC to 6V DC switching power supply module of the brand MEAN WELL. It has two AC power input terminals 1 and 2, and two DC power output terminals 3 and 4. The water level switch S is a finished product of the stainless steel float level switch of the brand Yijia. It has two normally closed contacts inside. When the water level is lower than the float of the finished float level switch S, the two normally closed contacts are in a closed state. When the water level is higher than the float of the finished float level switch S, the two normally closed contacts are in an open state. The detection circuit includes relay J1, adjustable resistor RP, resistors R1, R2, NPN transistors Q1, Q2, which are connected by circuit board wiring, the positive power input terminal of relay J1 and the adjustable resistor RP end, the first resistor R1 end, the third One end of the two resistors R2 is connected, the other end of the adjustable resistor RP is connected to the base of the first NPN transistor Q1, the other end of the first resistor R1 is connected to the collector of the first NPN transistor Q1 and the base of the second NPN transistor Q2 , the other end of the second resistor R2 is connected to the collector of the second NPN transistor Q2, and the emitter of the first NPN transistor Q1 is connected to the emitter of the second NPN transistor Q2. The probe includes two metal copper rods T and a plastic base plate. The remote control circuit U2 is a finished product of the manufacturer's brand Donghaosen and model CL4-GPRS. It has two power input terminals 1 and 2 (VCC and GND), and four control power output terminals. The working voltage is DC 6V, in use, through the existing mature mobile phone APP technology, the user can send commands at the remote end through the mobile phone APP through the wireless mobile network, after receiving the control command, the finished product U2 of the remote wireless controller will control the four control channels respectively. The power output terminal outputs or does not output power. The finished remote wireless controller U2 is equipped with three relays J2, J3, and J4, which are connected by circuit board wiring. Three of the finished remote wireless controller U2 control power output terminals K1, K2. , K3 is connected to the positive power input terminals of the three relays J2, J3 and J4, and the negative power input terminal 2 of the finished product U2 of the remote wireless controller is connected to the negative power input terminals of the three relays J2, J3 and J4. The short message sending circuit has the same two sets. The short message sending circuit is the finished product of the GSM short message alarm module of Ankea brand and model RPXK. The finished short message alarm module U3 and U4 have two power input pins 1 and 2 (VCC and GND), The eight-way control signal terminal C has a SIM card inside, and the working voltage is DC 6V. After any end of the eight-way control signal terminal C is input with a low level, the finished products U3 and U4 of the SMS alarm module can pass the wireless mobile network to the internal preset phone number Send a short message, up to six phone numbers can send short messages at the same time. Before use, through the functions of two sets of finished short message alarm modules U3 and U4, a short message is pre-stored in the first set of finished short message alarm module U3, the content is " Crop water shortage”, and store the phone number of the user who needs to be notified, a short message is pre-stored in the second set of SMS alarm module U4, the content is “sufficient water for crops”, and the phone number of the user who needs to be notified is stored. (In the actual application of the finished product of the SMS alarm module, after either end of the control signal terminal C is input with a low level, as long as the low level continues to be disconnected, the finished product of the SMS alarm module will only send a short message. After the low level is input again, the finished product of the SMS alarm module will only resend the SMS). Solenoid valves DC1 and DC2 are 220V AC power solenoid water valves of the brand Zhengke, and their internal valve cores are normally closed structures.

As shown in Figure 2, the power input terminals 1 and 2 of the switching power supply U1 are connected to the 220V AC power supply through wires, and the power output terminals 3 and 4 of the switching power supply U1 are respectively connected to the remote control circuit power input terminals at both ends of the remote wireless controller Pins 1 and 2 (VCC and GND) of the finished product U2, the power input of the short message sending circuit at both ends of the SMS alarm module, and pins 1 and 2 (VCC and GND) of the finished products U3 and U4 are connected by wires, and the positive pole of the power output terminal of the switching power supply is 3 The feet are connected with one end of the water level switch S, and the one end of the adjustable resistance RP of the first positive power input terminal of the detection circuit is connected by a wire, and the other end of the water level switch S is connected with the positive power input terminal of the second positive power input terminal of the detection circuit J1 by a wire. The negative 4 pin of the power output terminal of the switching power supply U1 and the negative power input terminal of the detection circuit NPN transistor Q1 The emitter is connected by a wire, the two copper rods T of the detection head and the two signal input terminals of the detection circuit can be adjusted The other end of the resistor RP1 and NPN The emitters of the transistor Q1 are respectively connected by wires, the two signal output terminals of the detection circuit NPN transistor Q1 collector, the NPN transistor Q2 collector and the two signal input terminals of the short message sending circuit are respectively the control signal terminals of U3 and U4 of the finished short message alarm module. C is connected by a wire, one pole of the 220V AC power supply and the control power input terminal of the relay J1 of the detection circuit are connected by a wire, and the control power output terminal of the control circuit is controlled by the normally closed contact terminal of the relay J1 and the relays J2, J3 and J4 of the remote control circuit. The power input terminals are connected by wires, and the normally open contact terminals of the three-way control power output relays J2, J3 and J4 of the remote control circuit are respectively connected with one of the power input terminals of the two solenoid valves DC1 and DC2 and the water pump M by wires. , The other pole of the 220V AC power supply is connected with the other power input end of the two solenoid valves DC1 and DC2, and the other power supply input terminal of the water pump M by a wire.

As shown in FIG. 1 , before the utility model is used, the user adds enough water into the water tank 1 in advance, then covers the movable cover 2 , and can also add a suitable proportion of fertilizer into the water as needed. In the actual use of the utility model, for example, when it is used in orchards, insert the two copper rods T of the probe into the outermost end of the root of one of several fruit trees that needs to irrigate the soil (it is better to select the farthest fruit tree Insert the two copper rods T of the probe head) to ensure that one of the fruit trees is irrigated with enough water at the inner end of the root, and finally the outermost end of the soil is infiltrated by the water (there is a circular hole around the lower end of the fruit tree, and the two copper rods of the probe head The rod T is located at the outer end of the circular pit). In practical applications, after the farthest fruit tree is irrigated with water, all fruit trees will be irrigated at the same time; After the outside of the water distribution pipe 4-1, move several hoses 13 to the lower ends of several fruit trees respectively to ensure that an opening 13-1 of one of the hoses 13 is close to the side end of the root of one of the fruit trees, and the roots of all the fruit trees are The side end has a corresponding opening 13-1 of a hose, and each fruit tree can be effectively irrigated during subsequent irrigation.

As shown in Figures 1 and 2, after the 220V AC power enters the power input terminals 1 and 2 of the switching power supply U1, the 3 and 4 pins of the switching power supply U1 will output a stable 6V DC power supply and enter the remote wireless controller finished product U2. 1 and 2 1 and 2 of the finished product U3 and U4 of the SMS alarm module, so the finished product U2 of the remote wireless controller and the finished product U3 and U4 of the SMS alarm module are in the standby state of power on; at the same time, the 6V DC power output from the 3 pin of the switching power supply U1 The positive pole will also enter the end of the water level switch S, and the first positive power input terminal of the detection circuit. When the water level inside the water tank 1 is sufficient, the two contacts inside the water level switch S are disconnected. Then, one pole of the 220V AC power supply will enter the remote control circuit through the relay J1 of the detection circuit to control the power input terminal and the normally closed contact terminal. The relays J2, J3 and J4 control the power input terminals. Because one pole of the 220V AC power supply is connected with the control power input terminal of the relay J1 by wires, the normally closed contact terminal of the relay J1 and the relays J2, J3 and J4 of the remote control circuit control the power input The terminals are connected by wires, so at this moment, the relays J2, J3, and J4 of the remote control circuit will control the power input terminals. In practical applications, if the water level inside the water tank is lower than the float of the water level switch S, the water level switch The two normally closed contacts of S are in a closed state, so the positive pole of the 6V DC power output from pin 3 of the switching power supply U1 enters the positive power input terminal of the relay J1 through the water level switch S, and the relay J1 is energized to pull in its control power input terminal and the normal power supply. The closed contact terminal is disconnected, because the normally closed contact terminal of the relay J1 and the control power input terminals of the relays J2, J3 and J4 of the remote control circuit are connected by wires, and the normally open contact terminals of the relays J2, J3 and J4 are respectively connected to the two terminals. Only one of the power input terminals of the solenoid valves DC1 and DC2 and the water pump M is connected by a wire. Therefore, when the water tank is short of water, the two solenoid valves DC1 and DC2 and the water pump M will not be powered to work, preventing the water tank from being short of water. In particular, the water pump M is damaged due to overheating due to idling. In the detection circuit and detection head: in normal use, if the root soil of fruit trees or other crops is not short of water, the resistance value between the two copper rods T is small, and the base voltage of the NPN transistor Q1 is lower than 0.7V, so the NPN The transistor Q1 is in the cut-off state, and its collector has no output. When the crops lack water and the soil is dry, the resistance value between the two copper rods T becomes larger, and the base voltage of the NPN transistor Q1 is higher than 0.7V, so the NPN transistor Q1 is in conduction. In the on state, its collector will output a low level and enter the control signal terminal C of the finished product U3 of the short message alarm module. Under the action of the internal circuit of the finished product U3 of the short message alarm module, the finished product U3 of the short message alarm module will send a short message, the content is "crop water shortage", The short message is delivered to the remote management personnel via the wireless mobile network. In the detection circuit and detection head: in normal use, if the root soil of fruit trees or other crops is not short of water, the resistance value between the two copper rods T is small, and the base voltage of the NPN transistor Q1 is lower than 0.7V, so the NPN The transistor Q1 is in the cut-off state, and its collector has no output. When the crops lack water and the soil is dry, the resistance value between the two copper rods T becomes larger, and the base voltage of the NPN transistor Q1 is higher than 0.7V, so the NPN transistor Q1 is in conduction. In the ON state, its collector will output a low level. In practical applications, when the crop is short of water, the collector of the NPN transistor Q1 outputs a low level and enters the control signal terminal C of the finished product U3 of the SMS alarm module. At the same time, the collector output of the NPN transistor Q1 is low. The level will also enter the base of the NPN transistor Q2. The base of the NPN transistor Q2 is in the cut-off state without proper bias. If the root soil of fruit trees or other crops is not short of water, the resistance value between the two copper rods T is small. , the base voltage of the NPN transistor Q1 is lower than 0.7V, the NPN transistor Q1 is in the cut-off state and its collector has no output. At this moment, the positive pole of the 6V DC power output from the 3-pin output of the switching power supply U1 will be stepped down by the resistor R1 and enter the NPN transistor Q2. The base, the NPN transistor Q2 is turned on and the collector will output a low level into the control signal terminal C of the finished product U4 of the SMS alarm module. Under the action of the internal circuit of the finished product U4 of the SMS alarm module, the finished product U4 of the SMS alarm module will send a short message, the content is " Crop water is sufficient”, and the text message is transmitted to the remote management personnel via the wireless mobile network. In practical applications, by adjusting the resistance value of the adjustable resistance RP, different soil dry humidity detection purposes can be set. The adjustment of the adjustable resistance RP is rotated to the left. Since the resistance value of the adjustable resistance RP becomes smaller, the soil humidity is relatively dry when the soil humidity is relatively dry. , the base voltage of the NPN transistor Q1 will be higher than 0.7V to turn on. When the adjustment of the adjustable resistor RP is rotated to the right, because the resistance of the adjustable resistor RP becomes larger, then when the soil humidity is relatively wet, the NPN transistor Q1 The base voltage will be higher than 0.7V to be turned on, so as to achieve different soil dry humidity detection purposes.

As shown in Figures 1 and 2, the finished product U2 of the remote wireless controller, the solenoid valve DC1, and the water pump M: When the soil is short of water, the finished product U3 of the SMS alarm module sends a short message with the content "Water shortage of crops", and the manager's mobile phone will receive the message at this moment. When it comes to text messages, managers use the existing mature technology and widely used mobile phones to remotely control the work or stop of electrical equipment, and use it in combination with the finished product U2 of the remote wireless controller. In actual use, managers learn about fruit trees remotely. When irrigation is required, the APP installed on the mobile phone can be used to control the opening of the two solenoid valves DC1 and DC2 respectively through the finished product U2 of the remote wireless controller, and control the water pump M to work, so as to realize the irrigation of fruit trees at the remote end; when irrigation is required At the same time, the administrator sends the first closed control signal by operating the APP interface installed on the mobile phone. After the finished product U2 of the remote wireless controller receives the first closed control signal, the first control power output terminal K1 will output the power into the relay. The positive power input terminal of J2, then, the relay J2 is energized to close its control power input terminal and the normally open contact terminal, because one pole of the 220V AC power enters the relay through the relay J1 control power input terminal and the normally closed contact terminal at this moment. J2 controls the power input terminal, the normally open contact terminal of the relay J2 and one of the power input terminals of the solenoid valve DC1 are connected by a wire, and the other pole of the 220V AC power supply and the other power input terminal of the solenoid valve DC1 are connected by a wire, so at this moment the solenoid valve is connected by a wire. DC1 will be energized and its internal valve core will open; then the operator operates the mobile phone APP interface to send the third channel of closing control signal, after the finished product U2 of the remote wireless controller receives the third channel of closing control signal, the third channel of control power output wiring Terminal K3 will output power and enter the positive power input terminal of relay J4, so the relay J4 is energized and its control power input terminal and normally open contact terminal are closed. The normally closed contact end enters the control power input end of the relay J4, the normally open contact end of the relay J4 is connected with one of the power input ends of the pump M through a wire, and the other pole of the 220V AC power supply is connected with the other power input end of the pump M through a wire , so at this moment the water pump M will be powered to work; in this way, after the water pump M is powered on, the water in the water tank 1 will be pumped out through the connecting pipe 1-1 and then output by the solenoid valve DC1 with the valve core opened into the irrigation pipe 4, and through the A plurality of water distribution pipes 4-1 at the upper end of the irrigation pipe 4 flow out into several hoses 13, and each of the several openings 13-1 of each hose 13 will flow out water and flow into the side end of the root of one of the fruit trees. Fruit trees can be effectively irrigated. The finished product U2 of the remote wireless controller, the solenoid valve DC1, and the water pump M: when the soil water is irrigated enough, the finished product U4 of the SMS alarm module sends a text message with the content "crop water is sufficient", and the manager's mobile phone will receive the text message at this moment, and the manager will pass the message. The existing mature technology and widely used APP installed on mobile phones to remotely control the operation or stop of electrical equipment is used in combination with the finished product U2 of the remote wireless controller. In actual use, the management personnel learned from the remote that the fruit trees do not need irrigation; they need to be turned off. When the solenoid valve DC1 and the water pump M are used, the administrator sends the first shutdown control signal by operating the APP interface installed on the mobile phone. After the finished product U2 of the remote wireless controller receives the first shutdown control signal, the first channel controls the power output terminal. K1 will stop the output power from entering the positive power input terminal of relay J2. Therefore, the relay J2 will no longer pull in its control power input terminal and the normally open contact terminal when it loses power. Then, the solenoid valve DC1 will no longer work when it loses power. Its internal valve The core is closed; then the operator operates the mobile phone APP interface to send the third channel shutdown control signal, after the finished product U2 of the remote wireless controller receives the third channel shutdown control signal, the third channel control power output terminal K3 no longer outputs power into the relay The positive power input terminal of J4, then, the relay J4 no longer pulls in its control power input terminal and the normally open contact terminal is disconnected, and then the water pump M no longer works when the power is lost. Through the above, the remote irrigation of crops is effectively realized. and stop irrigation.

As shown in Figures 1 and 2, if fertilizer is pre-mixed in the water tank 1, before remote operation of irrigation, in order to prevent fertilizer sedimentation from causing uneven fertilization on irrigation, when the operator is irrigating remotely, the administrator can install it by operating the mobile phone first. The APP interface of the APP sends the second closing control signal. After the finished product U2 of the remote wireless controller receives the second closing control signal, the second control power output terminal K2 will output power and enter the positive power input terminal of the relay J3, so, The relay J3 is energized and its control power input terminal and the normally open contact terminal are closed, because one pole of the 220V AC power now enters the relay J3 control power input terminal through the relay J1 control power input terminal and the normally closed contact terminal, and the relay J3 The normally open contact end of the solenoid valve DC2 is connected by a wire, and the other pole of the 220V AC power supply and the other power input end of the solenoid valve DC2 are connected by a wire, so at this moment, the solenoid valve DC2 will be energized to work its internal valve. The core will be turned on; then the operator operates the mobile phone APP interface to send the third channel closing control signal, after the finished product U2 of the remote wireless controller receives the third channel closing control signal, the third channel control power output terminal K3 will output the power into the relay The positive power input terminal of J4, then, the relay J4 is energized and its control power input terminal and the normally open contact terminal are closed, because one pole of the 220V AC power enters the relay through the relay J1 control power input terminal and the normally closed contact terminal at this moment. J4 controls the power input terminal, the normally open contact terminal of relay J4 is connected with one of the power input terminals of the water pump M by a wire, and the other pole of the 220V AC power supply is connected with the other power input terminal of the water pump M by a wire, so the water pump M will get In this way, the water in the water tank 1 will be pumped out through the connecting pipe 1-1 and then output by the solenoid valve DC2 opened by the valve core into the return pipe 1-2 after the pump M is powered on, and will pass through the return pipe 1-2. Flush into the water tank 1, and perform pressure flushing operation on the inside of the water tank 2. Since the water is continuously circulated in the water pump M, the return pipe 1-2, and the water tank 1, the fertilizer will be fully mixed with the water evenly; after a certain period of time, The operator sends the second shutdown control signal through the APP interface installed on the mobile phone at the remote end. After the finished product U2 of the remote wireless controller receives the second shutdown control signal, the second control power output terminal K2 will stop outputting power. Enter the positive power input terminal of the relay J3, so the relay J3 will no longer pull in when it loses power, and its control power input terminal and the normally open contact terminal will be disconnected. Then, the solenoid valve DC2 will no longer work when the power is lost, and its internal spool will be closed, and then operate The operator sends the first closed control signal by operating the APP interface installed on the mobile phone to control the first solenoid valve DC1 to be energized and its internal valve core to open. 1-1 is drawn out and then output through the solenoid valve DC1 opened by the valve core into the irrigation pipe 4, and flows out through a plurality of water distribution pipes 4-1 at the upper end of the irrigation pipe 4 into several hoses 13. Each of the several openings 13-1 will flow water into it At the root side of a fruit tree, each fruit tree can be effectively irrigated. After irrigation, the operator can close the solenoid valve DC1 and the water pump M through the mobile phone APP at the remote end.

As shown in Figure 2, in the control circuit: the relay J1 is a DC4123 type 6V small relay, the adjustable resistance RP1 is 470K, the resistances of the resistors R1 and R2 are 20K, and the NPN transistors Q1 and Q2 are 9014. The three relays J2, J3, and J4 matched with the finished product U2 of the remote wireless controller are DC4123 6V small relays. The solenoid valves DC1 and DC2 are the 220V AC power solenoid water valves of the brand Zhengke. The internal valve core is a normally closed structure. Each power is 3W.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is limited to the details of the above-mentioned exemplary embodiments, and does not deviate from the details of the present invention. The present invention can be implemented in other specific forms without sacrificing the spirit or essential characteristics. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. a kind of agricultural monitoring device based on Internet of Things, have the water tank of removable cover, water pump and several soft including upper end Pipe, it is characterised in that the lower middle part of water tank is equipped with connecting tube, is equipped with return pipe on the right-hand end top of water tank, return pipe Upper left quarter is located at right side upper end in water tank, and the right part of return pipe is located on the outside of water tank, also has irrigation pipe, Switching Power Supply, water level Switch, detection circuit, detecting head, circuit for remotely controlling, solenoid valve, short message transmitting line, water level switch are mounted on the inside of water tank Lower part, on circuit boards, circuit board is mounted on member for detection circuit, Switching Power Supply, circuit for remotely controlling, the installation of short message transmitting line In part box, subassembly wrapper is mounted on the lower front of water tank, and water pump is mounted in the middle part of the lower end of water tank, the water inlet pipe of water pump and water tank Lower middle part connecting tube connects, and is equipped with a three-way connection in the water outlet of water pump, the water inlet end and three of two solenoid valves connects Two water outlets connection of head, wherein the water outlet of a solenoid valve is connected with the right part lower end of return pipe, irrigation pipe and another The water outlet of solenoid valve links together, and several hoses are respectively fitted over the outside of the more distributive pipes in irrigation pipe right part upper end, In the soil that detecting head insertion crops need to irrigate, the power input and 220V AC power source of Switching Power Supply connect through conducting wire It connects, the power supply output both ends of Switching Power Supply are defeated with circuit for remotely controlling power input both ends, the power supply of short message transmitting line respectively Enter both ends to connect through conducting wire, the power output end anode of Switching Power Supply and water level switch one end, detection circuit first via anode electricity Source input terminal is connected through conducting wire, and the water level switch other end is connected with the second road of detection circuit cathode power supply input terminal through conducting wire, is opened The power output end cathode in powered-down source is connected with detection circuit negative power supply input terminal through conducting wire, two copper bars of detecting head and detection Two signal input parts of circuit are connected through conducting wire respectively, two signal output ends of detection circuit respectively with short message transmitting line Two signal input parts connected through conducting wire, the control power input of one pole of 220V AC power source and detection circuit connects through conducting wire It connects, the control power output end of detection circuit is connected with the control power input of circuit for remotely controlling through conducting wire, long-range to control The three tunnels control power output end of circuit is connected with one of power input of two solenoid valves, water pump through conducting wire respectively, Another pole of 220V AC power source is connected with another power input of two solenoid valves, water pump through conducting wire.

2. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that the right end of irrigation pipe For enclosed construction, the right part upper end of irrigation pipe is equipped with more distributive pipes from left to right, spaced apart on every hose With multiple apertures, the other end of hose is enclosed construction.

3. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that Switching Power Supply is 220V exchange turns 6V direct-current switch power supply module.

4. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that water level switch is floating Ball liquid-level switch, there are two normally-closed contacts for internal tool.

5. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that detection circuit includes Relay, adjustable resistance, resistance, NPN triode, connect through circuit board wiring therebetween, relay cathode power supply input terminal and can Adjust resistance one end, first resistance one end, second resistance one end connection, the adjustable resistance other end and first NPN triode Base stage connection, first resistance other end and first NPN triode collector, second NPN transistor base connection, second The resistance other end and second NPN triode collector connection, first NPN triode emitter and second tri- pole NPN Pipe transmitting connection.

6. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that detecting head includes two Metallic copper bar and plastic base plate, two copper bars are separately mounted to the lower end of plastic base plate.

7. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that circuit for remotely controlling It is remote wireless controller, remote wireless controller is configured with three relays, connects therebetween through circuit board wiring, long distance wireless The cathode power supply input terminal connection of the wherein three tunnels control power supply outlet terminal and three relays of controller, long distance wireless control The connection of the negative power supply input terminal of the negative power supply input terminal of device processed and three relays.

8. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that short message transmitting line Identical two sets, short message transmitting line is GSM text message alarm.

9. a kind of agricultural monitoring device based on Internet of Things according to claim 1, it is characterised in that solenoid valve is 220V AC power source electromagnetic water valve, inner spool are closed type structures.