CN203661747U - Automatic flower watering device - Google Patents

Abstract

An automatic flower watering device belongs to the field of electric control. The utility model aims to solve the problem that the flowers and plants cannot get enough water due to the owner going out for a long time. The utility model includes a water pump, a solenoid valve, a moisture sensor, a controller, an electromagnetic relay KM1 and a delay relay KM2; an electromagnetic valve and a water pump are arranged on the water pipe, and a shower is arranged at the faucet at the end of the water pipe. Directly above the potted plant; set a moisture sensor in the soil of the potted plant, the moisture content signal output terminal of the moisture sensor is connected to the moisture content signal input terminal of the controller; the water shortage signal output terminal of the controller is connected to the enabling terminal of the electromagnetic relay KM1 It is connected with the enabling terminal of the time-delay relay KM2; the electromagnetic relay KM1 controls the opening of the water pump and the solenoid valve; the time-delay relay KM2 controls the time-delay closing of the water pump and the solenoid valve.

Description

Automatic watering device

technical field

The utility model relates to an automatic flower watering device, which belongs to the field of electric control.

Background technique

Nowadays, more and more people have raised flowers and plants at home, and there are many kinds of utensils for watering, such as water basins, watering cans, etc., but these utensils can only be watered once. Many people cannot water the flowers and plants on time because they go out to work and study for a long time, resulting in insufficient water for the flowers and plants, which affects their normal growth process, and may even cause the flowers and plants to dry up and die.

Contents of the invention

The purpose of the utility model is to provide an automatic flower watering device to solve the problem that the flowers and plants cannot get enough water due to the owner going out for a long time.

The automatic watering device described in the utility model includes a water pump, a solenoid valve, a moisture sensor, a controller, an electromagnetic relay KM1 and a time delay relay KM2;

A solenoid valve and a water pump are arranged on the water pipe, and a shower is arranged at the faucet at the end of the water pipe, and the shower is arranged directly above the potted plant;

A moisture sensor is set in the soil of the plant pot, and the moisture content signal output end of the moisture sensor is connected with the moisture content signal input end of the controller;

The water shortage signal output terminal of the controller is connected with the enabling terminal of the electromagnetic relay KM1 and the enabling terminal of the delay relay KM2; the electromagnetic relay KM1 controls the opening of the water pump and the solenoid valve;

The delay relay KM2 delays the control of the water pump and the solenoid valve to delay closing.

The utility model has the advantages: the automatic flower watering device described in the utility model has a simple structure. After detecting that the plants are short of water, it will start watering and stop after a fixed time. If one watering cannot meet the water demand of the plants, it will start again until It is detected that the plants are not short of water, and no longer water. This method is safe and can fully water the plants, which solves the problem of automatic watering when people are not at home.

Description of drawings

Fig. 1 is the functional block diagram of automatic flower watering device described in the utility model;

Fig. 2 is a specific circuit diagram of the automatic flower watering device of the present invention.

Detailed ways

Specific Embodiment 1: The present embodiment will be described below in conjunction with Fig. 1 and Fig. 2. The automatic flower watering device described in the present embodiment includes a water pump 1, a solenoid valve 2, a moisture sensor, a controller, an electromagnetic relay KM1 and a time delay relay KM2 ;

A solenoid valve 2 and a water pump 1 are arranged on the water pipe, and a shower is arranged at the faucet at the end of the water pipe, and the shower is arranged directly above the potted plant;

A moisture sensor is set in the soil of the plant pot, and the moisture content signal output end of the moisture sensor is connected with the moisture content signal input end of the controller;

The water shortage signal output terminal of the controller is connected with the enabling terminal of the electromagnetic relay KM1 and the enabling terminal of the delay relay KM2; the electromagnetic relay KM1 controls the opening of the water pump 1 and the solenoid valve 2;

The delay relay KM2 delays the control of the water pump 1 and the solenoid valve 2 to delay closing.

The moisture sensor consists of probe A and probe B.

The controller includes NE555 time base integrated circuit, NMOS switch tube M, NPN transistor T, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, capacitor C1, capacitor C2 and diode D;

Probe A is connected to the source of NMOS switch M, probe B is connected to the gate of NMOS switch M, and the gate of NMOS switch M is connected to the power supply -5V through resistor R1;

The drain of the NMOS switch tube M is simultaneously connected to one end of the resistor R2 and one end of the resistor R3;

The other end of the resistor R2 is connected to the power supply +5V;

The other end of the resistor R3 is connected to the base of the NPN transistor T, the collector of the NPN transistor T is connected to the power supply +5V, and the emitter of the NPN transistor T is grounded through the resistor R5; the emitter of the NPN transistor T is also connected to 4 of the NE555 time base integrated circuit foot;

Pin 1 of NE555 time base integrated circuit is grounded; pin 8 of NE555 time base integrated circuit is connected to power supply +5V; pin 7 of NE555 time base integrated circuit is connected to one end of resistor R4 and one end of R6 at the same time; the other end of resistor R4 is connected to power supply + 5V, the other end of resistor R6 is grounded through capacitor C1, and the other end of resistor R6 is also connected to pin 2 and pin 6 of the NE555 time base integrated circuit;

Pin 3 of the NE555 time-base integrated circuit is simultaneously connected to the cathode of the diode D, one end of the coil of the electromagnetic relay KM1 and one end of the coil of the delay relay KM2; the anode of the diode D, the other end of the coil of the electromagnetic relay KM1 and the coil of the delay relay KM2 The other end of both are grounded;

The normally open contact of the electromagnetic relay KM1 and the normally closed contact of the delay relay KM2 are connected in series with the water pump 1 in the 220V AC power circuit, and the solenoid valve 2 is connected in parallel at both ends of the water pump 1 .

The amount of moisture contained in the soil in the flower pot will affect the resistance between the probe A and the probe B. When the soil in the flower pot is not short of water, the soil resistivity is small, and the gate of the NMOS switch M to the circuit The voltage between the ground is close to 0V, the NMOS switch tube M is turned on, and the NPN transistor T is turned off, then the emitter potential of the NPN transistor T is 0V, at this time the NE555 time base integrated circuit is in a non-triggering state, and pin 3 outputs a low level .

When the soil in the flower pot lacks water, the resistance between probe A and probe B increases, the G electrode of the NMOS switch M is close to negative pressure, the NMOS switch M is cut off, the NPN transistor T is turned on, and the NPN The emitter potential of the triode T rises. According to the functional characteristics of the NE555 time-base integrated circuit, when the potential of the 4-pin is higher than 0.4V, the NE555 time-base integrated circuit enters an oscillation state, and its 3-pin outputs a high level, and the electromagnetic relay Both the KM1 coil and the time-delay relay KM2 coil are energized, the normally open contact of the electromagnetic relay KM1 is closed immediately, the water pump 1 and the solenoid valve 2 are energized, work, and the shower spouts water to water the potted plants; the time-delay relay KM2 The normally closed contact is disconnected after a delay for a period of time, then the water pump 1 and the electromagnetic valve 2 are powered off, and the water supply is stopped. This arrangement can ensure safe water supply.

If one watering does not make the resistance between probe A and probe B smaller, the NE555 time-based integrated circuit will be triggered again to perform watering operation until the soil moisture in the plant pot is sufficient.

Embodiment 2: This embodiment further describes Embodiment 1, and further includes a water collection box 3 , the opening of which is upward, and potted plants are arranged in the water collection box 3 .

When the shower sprinkler waters the potted plants, the water may splash out of the flowerpot and the floor will be dirty. Therefore, a water collection box 3 is set in this embodiment to collect the splashed water to ensure the hygiene of the floor. The fresh water can also be sucked into the soil through the holes under the flower pots, which effectively uses energy and does not cause waste.

Claims (4)

1. The automatic watering device is characterized in that it includes a water pump (1), a solenoid valve (2), a moisture sensor, a controller, an electromagnetic relay KM1 and a time delay relay KM2; A solenoid valve (2) and a water pump (1) are arranged on the water pipe, and a shower is arranged at the faucet at the end of the water pipe, and the shower is arranged directly above the potted plant; A moisture sensor is set in the soil of the plant pot, and the moisture content signal output end of the moisture sensor is connected with the moisture content signal input end of the controller; The water shortage signal output terminal of the controller is connected to the enabling terminal of the electromagnetic relay KM1 and the enabling terminal of the delay relay KM2; the electromagnetic relay KM1 controls the opening of the water pump (1) and the solenoid valve (2); The delay relay KM2 delays the control of the water pump (1) and the solenoid valve (2) to delay closing. 2. The automatic flower watering device according to claim 1, wherein the moisture sensor is composed of probe A and probe B. 3. The automatic watering device according to claim 2, characterized in that the controller includes NE555 time base integrated circuit, NMOS switch M, NPN triode T, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, Resistor R6, capacitor C1, capacitor C2 and diode D; Probe A is connected to the source of NMOS switch M and grounded; probe B is connected to the gate of NMOS switch M, and the gate of NMOS switch M is connected to the power supply -5V through resistor R1; The drain of the NMOS switch tube M is simultaneously connected to one end of the resistor R2 and one end of the resistor R3; The other end of the resistor R2 is connected to the power supply +5V; The other end of the resistor R3 is connected to the base of the NPN transistor T, the collector of the NPN transistor T is connected to the power supply +5V, and the emitter of the NPN transistor T is grounded through the resistor R5; the emitter of the NPN transistor T is also connected to 4 of the NE555 time base integrated circuit foot; Pin 1 of NE555 time base integrated circuit is grounded; pin 8 of NE555 time base integrated circuit is connected to power supply +5V; pin 7 of NE555 time base integrated circuit is connected to one end of resistor R4 and one end of R6 at the same time; the other end of resistor R4 is connected to power supply + 5V, the other end of resistor R6 is grounded through capacitor C1, and the other end of resistor R6 is also connected to pin 2 and pin 6 of the NE555 time base integrated circuit; Pin 3 of the NE555 time-base integrated circuit is simultaneously connected to the cathode of the diode D, one end of the coil of the electromagnetic relay KM1 and one end of the coil of the delay relay KM2; the anode of the diode D, the other end of the coil of the electromagnetic relay KM1 and the coil of the delay relay KM2 The other end of both are grounded; The normally open contact of the electromagnetic relay KM1 and the normally closed contact of the delay relay KM2 are connected in series with the water pump (1) in the 220V AC power circuit, and the solenoid valve (2) is connected in parallel at both ends of the water pump (1). 4 . The automatic flower watering device according to claim 1 , further comprising a water collection box ( 3 ), the opening of the water collection box ( 3 ) is upward, and the potted plants are arranged in the water collection box ( 3 ).

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