CN205193644U - Plant factory control system - Google Patents

Abstract

The utility model discloses a plant factory control system, include: microcontroller, carbon dioxide sensor, temperature and humidity sensor, the concentration of the nutrient solution sensor, light intensity sensor, the keyboard, a display screen, SD card memory, actuating mechanism drive module, zigbee communication module and clock module, this system can detect the temperature through the sensor, humidity, illumination, data signal such as CO2 concentration and nutrient solution conductivity gather, and through actuating mechanism drive module control illumination, carbon -dioxide generator, add the thermoscope, functional device such as humidifier, and concentration of the nutrient solution is adjusted in control, thereby realize monitoring and control to the vegetation environment.

Description

A plant factory control system

technical field

The utility model belongs to the technical field of crop growth control, in particular to a plant factory control system.

Background technique

In the period of rapid development of sensor technology, plant factory control technology is also constantly deepening and advancing. With the development of LED lights, the red and blue light sources required for plant growth in a closed environment have also been resolved. The use of high-tech cultivation methods, coupled with the automatic control system, can effectively adjust the carbon dioxide concentration, temperature, humidity, nutrient solution concentration, light and other physical and chemical conditions in the planting environment to achieve annual continuous production of crops.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a plant factory control system with a relatively low cost using a microcontroller as a main control chip. The system can collect digital signals such as temperature, humidity, light, CO2 concentration, and nutrient solution conductivity (EC value) through sensor detection, and control light (light), carbon dioxide generator, heater, etc. through the actuator drive module. Humidifier (or watering device) and other functional devices, as well as control and adjust the concentration of nutrient solution, so as to realize the monitoring and control of the plant growth environment.

The utility model solves its technical problem and realizes through the following technical solutions:

A plant factory control system, including: a microcontroller, a carbon dioxide concentration sensor, a temperature and humidity sensor, a nutrient solution concentration sensor, a light sensor, a keyboard, a display screen, an SD card memory, an actuator drive module, a zigbee communication module and a clock module, The microcontroller is respectively connected with a carbon dioxide concentration sensor, a temperature and humidity sensor, a nutrient solution concentration sensor, an illumination sensor, an actuator drive module, a keyboard, a display screen, an SD card memory, a zigbee communication module, and a clock module.

In the above-mentioned technical scheme, the microcontroller selects an ArduinoMega2560 development board.

In the above technical solution, the temperature and humidity sensor adopts SHT11 produced by Swiss Sensirion Company.

In the above technical solution, the light sensor model is BH1750.

In the above technical solution, the model of the carbon dioxide concentration sensor is TGS4160.

In the above technical solution, the nutrient solution concentration sensor is an electrical conductivity (EC value) detection sensor.

In the above technical solution, the keyboard is a 4X4 dot matrix keyboard.

In the above technical solution, the display screen is a 12864LCD liquid crystal display screen.

In the above technical solution, the actuator driving module includes a ULN2003 chip, the input end of the ULN2003 chip is connected to the ArduinoMega2560, and the output end is connected to the relay.

In the above technical solution, the clock module uses PCF8563 clock chip.

The utility model collects digital signals such as temperature, humidity, light, CO2 concentration and nutrient solution conductivity (EC value) through the detection of various functional sensors, and controls the light (light), carbon dioxide generator, and heating through the actuator drive module. Functional devices such as device, humidifier (or watering device), and control and adjust the concentration of nutrient solution, so as to realize the monitoring and control of the plant growth environment.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of microcontroller ArduinoMega2560 in the utility model.

Fig. 3 is a schematic structural view of the 4X4 dot-matrix keyboard in the present invention.

Fig. 4 is a structural schematic diagram of the 12864LCD liquid crystal display in the utility model.

Fig. 5 is a structural schematic diagram of the driving mold of the actuator in the utility model.

Fig. 6 is a diagram of the specific work flow in the embodiment.

detailed description

The technical scheme of the utility model is further described below in conjunction with specific embodiments.

As shown in accompanying drawing 1, a kind of plant factory control system involved in the utility model mainly comprises: microcontroller, data acquisition system (comprising carbon dioxide concentration sensor, temperature and humidity sensor, nutrient solution concentration sensor, illumination sensor), man-machine Interactive system (including keyboard and display), information storage system (SD card memory), actuator drive module (including relay module with optocoupler isolation), communication system (zigbee communication module) and auxiliary system (clock module and power module ), the microcontroller is connected to the carbon dioxide concentration sensor, temperature and humidity sensor, nutrient solution concentration sensor, light sensor, actuator drive module, keyboard, display screen, SD card memory, zigbee communication module and clock module respectively.

As shown in Figure 2, the microcontroller uses an ArduinoMega2560 development board, which has 54 digital input and output terminals, and has integrated hardware modules such as SPI, UART, PWM, and A/D conversion inside, which can meet the requirements of data acquisition and control. Require.

The temperature and humidity sensor adopts SHT11 produced by Swiss Sensirion company. SHT11 temperature and humidity sensor is a digital temperature and humidity sensor with I2C bus, which has the advantages of free debugging, free calibration, programmable adjustment of measurement resolution, CRC transmission verification, ultra-small Package size and other characteristics; its high measurement accuracy is a preferred device in various temperature and humidity monitoring applications.

The model of the light sensor is BH1750, which is a digital light intensity sensor integrated circuit with a two-wire serial bus interface. It can monitor the environment based on the collected light intensity data, and can support a wide range of light intensity changes, direct digital output, eliminating complex mathematical operations, and is easy to use.

The carbon dioxide concentration sensor is selected from TGS4160, and the TGS4160 carbon dioxide sensor is a solid-state electrochemical gas sensor produced by FIGARO. In addition to the characteristics of small size, long life, good selectivity and stability, this carbon dioxide sensor also has the characteristics of high humidity and low temperature resistance, and can be widely used in automatic ventilation systems or long-term monitoring of carbon dioxide gas. occasion. TGS4160 is used to detect the carbon dioxide concentration signal. In the actual measurement application circuit, the measured signal must be processed. To process the signal, we choose to use Figaro (FIGARO) company’s dedicated to process TGS4160 detection signal (re-calibrate TGS4160) AM-4 detection module.

The nutrient solution concentration sensor is an electrical conductivity (EC value) detection sensor (when expressing the nutrient solution concentration, the concentration of the nutrient solution is represented by the indirect electrical conductivity (EC value), because the nutrient solution has conductivity, and at a certain Within the concentration range of the nutrient solution, the conductivity of the nutrient solution will increase as the concentration of the nutrient solution increases, and the conductivity will decrease as the concentration of the nutrient solution decreases).

Described keyboard selects 4X4 dot-matrix keyboard (as shown in Figure 3, 4X4 dot-matrix keyboard connects the 38-45 pin of ArduinoMega2560); Described display screen selects 12864LCD liquid crystal display (Fig. 4). The 4X4 dot matrix keyboard and the 12864LCD liquid crystal display can also be replaced by a liquid crystal display with a touch display function.

The actuator drive module is a relay module with optocoupler isolation, which can realize low-voltage control of high-voltage or high-current external devices. As shown in Figure 5, the actuator drive module includes a ULN2003 chip, and ULN2003 is a high-current drive array , used in control circuits such as single-chip microcomputers, smart meters, PLCs, digital output cards, etc., can directly drive loads such as relays, the six inputs of the ULN2003 chip are respectively connected to pins 82-87 of ArduinoMega2560, and its output terminals are connected to relays. Further control functional devices such as illumination (lighting), carbon dioxide generator, heater, humidifier (or watering device).

The clock module uses PCF8563 clock chip, PCF8563 is an industrial-grade multi-function clock/calendar chip with extremely low power consumption and with I2C bus interface function introduced by PHILIPS company. According to the I2C bus protocol, the I2C bus is a serial bus composed of a data line SDA and a clock line SCL, which can send and receive data.

The information storage and communication system includes two parts: SD card memory and zigbee communication module.

When the utility model is working, the specific working process is shown in Figure 6. After the microcontroller is powered on, it starts to run, and the microcontroller detects the temperature, humidity, light, CO2 concentration and nutrient solution detected by each sensor according to the preset scanning cycle. Digital signals such as conductivity (EC value) are scanned and collected. When the microcontroller detects an interruption (the interruption signal is generated by a button), the microcontroller uploads the collected data to the host computer through the zigbee communication module to realize plant growth information. Remote monitoring; when data such as temperature, humidity, light, CO2 concentration, and nutrient solution conductivity (EC value) collected by the microcontroller exceed the set threshold (set the temperature, humidity, light, CO2 concentration and the optimal threshold value of the conductivity of the nutrient solution), the microcontroller drives the actuator drive module.

The utility model has been described as an example above. It should be noted that, without departing from the core of the utility model, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without costing creative labor all fall into the Into the scope of protection of the utility model.

Claims (10)

1. A plant factory control system, characterized in that: comprising microcontroller, carbon dioxide concentration sensor, temperature and humidity sensor, light sensor, nutrient solution concentration sensor, keyboard, display screen, SD card memory, actuator drive module, zigbee communication Module and clock module, the microcontroller is connected with carbon dioxide concentration sensor, temperature and humidity sensor, nutrient solution concentration sensor, light sensor, actuator drive module, keyboard, display screen, SD card memory, zigbee communication module and clock module respectively. 2. A plant factory control system according to claim 1, characterized in that: said microcontroller is an ArduinoMega2560 development board. 3. A plant factory control system according to claim 1, characterized in that: the model of the temperature and humidity sensor is SHT11. 4. A plant factory control system according to claim 1, characterized in that: the model of the light sensor is BH1750. 5. A plant factory control system according to claim 1, characterized in that: the model of the carbon dioxide concentration sensor is TGS4160. 6. A plant factory control system according to claim 1, characterized in that: the nutrient solution concentration sensor is a conductivity detection sensor. 7. A plant factory control system according to claim 1, characterized in that: the keyboard is a 4X4 dot matrix keyboard. 8. A plant factory control system according to claim 1, characterized in that: the display screen is a 12864LCD liquid crystal display screen. 9. A plant factory control system according to claim 2, characterized in that: the actuator drive module includes a ULN2003 chip, the input end of the ULN2003 chip is connected to the ArduinoMega2560, and the output end of the ULN2003 chip is connected to a relay. 10. A plant factory control system according to claim 1, characterized in that: the clock module includes a PCF8563 clock chip.