CN205450845U - Simple and easy greenhouse control system - Google Patents

Abstract

The utility model discloses a simple greenhouse control system. The system includes a microcontroller module, a power module, a data acquisition module, a keyboard module, an alarm module, a liquid crystal display module, a storage module, a clock module, an execution output module, a communication module and an upper computer. The data acquisition module, liquid crystal display module, keyboard module, alarm module, storage module, clock module and execution output module are connected, and the upper computer is connected with the microcontroller module through the communication module. The system can not only control the temperature and humidity in the greenhouse , illuminance, and CO2 concentration and other environmental factors are collected, displayed and stored in real time, and can automatically adjust the greenhouse environment according to preset parameters to meet the growth requirements of different crops. The utility model has the advantages of simple structure, convenient operation, high reliability and easy popularization.

Description

A Simple Greenhouse Control System

technical field

The utility model belongs to the technical field of automatic control of agricultural production, and in particular relates to a simple greenhouse control system.

Background technique

A greenhouse is a place that can change the plant growth environment, create better conditions for plant growth, and avoid the influence of seasonal changes and harsh climates. With the development of society and economy, the number of various horticultural greenhouses and crop greenhouses is increasing. At present, most of the control of these greenhouse environments still rely on manual experience for manual control. This control method has low production efficiency, and with artificial The increase in cost and the high production cost per unit product have seriously affected the benefits of agricultural production and hindered the development of agricultural production. On the other hand, as greenhouse crops tend to diversify, the requirements for the environment are getting higher and higher, and the low-precision characteristics of manual control can no longer fully meet the needs of greenhouse crop growth. Therefore, replacing manual control with intelligent greenhouse control is an inevitable trend in the development of modern greenhouses. Most of the common intelligent greenhouse systems in China today use industrial computers or PLC solutions, which have high control costs and low cost performance, and most users cannot afford them economically. rise.

Contents of the invention

The utility model proposes a low-cost simple greenhouse control system aiming at the deficiencies in the prior art. The system can not only collect, display and store environmental factors such as temperature, humidity, illuminance, and CO2 concentration in the greenhouse in real time, but also automatically adjust the greenhouse environment according to preset parameters to meet the growth requirements of different crops. . The utility model has the advantages of simple structure, convenient operation, low cost and easy popularization.

The technical scheme that the utility model solves its technical problem adopts is:

A simple greenhouse control system, including a microcontroller module, a power supply module, a data acquisition module, a keyboard module, an alarm module, a liquid crystal display module, a storage module, a clock module, an execution output module, a communication module, and a host computer. The device module is connected with the power supply module, data acquisition module, liquid crystal display module, keyboard module, alarm module, storage module, clock module and execution output module respectively, and the described upper computer is connected with the microcontroller module through the communication module, so The data collection module described above includes a temperature and humidity collection module, an illumination collection module, and a _CO2 concentration collection module respectively connected to the microcontroller module, and the execution output module includes a relay output module connected to the microcontroller module.

As a preferred solution of the present utility model, the execution output module further includes a natural ventilation system, a warming system, a wet curtain fan system, a sunshade system, a dropper system, a circulation fan system, Lighting system and _CO2 generator.

As a preferred solution of the present utility model, the microcontroller module adopts STC12C5A60S2 single-chip microcomputer, the power module adopts a switching power supply, the temperature and humidity acquisition module selects an intelligent digital temperature and humidity sensor SHT11, and the illuminance acquisition module selects light intensity Digital conversion chip TSL2561, described _CO Concentration collection module selects solid-state electrochemical CO sensor chip TGS4160, described memory module selects memory chip AT24C64, and described clock module selects clock chip DS1302, and described liquid crystal display module adopts 12864 liquid crystal display, The communication module uses chip MAX232.

As a preferred solution of the utility model, the alarm module includes a light-emitting diode and a passive buzzer, and the buzzer is connected to a microcontroller through a triode.

As a preferred solution of the present utility model, the keyboard module includes four independent keys, and the keyboard module includes four independent keys, which respectively represent the function setting key, parameter up key, parameter down key and parameter upper and lower limit selection key.

The beneficial effects of the utility model are:

1) The utility model can accurately collect, display, store, adjust and alarm the environmental factors in the greenhouse in real time, and can query the historical data of the environmental factors.

2) The utility model can automatically adjust the greenhouse environment according to preset parameter limit values, so as to meet the growth requirements of different crops.

3) The utility model has a simple structure, the required components are common and easily available, the procurement cycle is short, the production cost is low, and it is easy to install and maintain.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

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

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments of the present invention are not limited thereto.

Referring to Figure 1, a simple greenhouse control system includes a microcontroller module, a power supply module, a data acquisition module, a keyboard module, an alarm module, a liquid crystal display module, a storage module, a clock module, an execution output module, a communication module and a host computer, Described microcontroller module is connected with power supply module, data acquisition module, liquid crystal display module, keyboard module, alarm module, storage module, clock module and execution output module respectively; Described upper computer is connected with microcontroller module through communication module connected, the described data acquisition module includes a temperature and humidity acquisition module, an illuminance acquisition module, and a _CO concentration acquisition module respectively connected to the microcontroller module, and the described execution output module includes a relay connected to the microcontroller module The output module and the natural ventilation system, heating system, wet curtain fan system, sunshade system, dropper system, circulation fan system, supplementary light system and _CO2 generator respectively connected to the relay output module.

In this embodiment, the microcontroller module is an 8-bit single-chip microcomputer STC12C5A60S2 produced by STC Company. The single-chip microcomputer integrates 8 high-speed 10-bit A/D conversion circuits inside. It is a high-performance, low-power consumption, super anti-interference control device, which can effectively improve the programmability of the system and reduce the power consumption of the system. Good use effect.

In this embodiment, the power supply module adopts a switching power supply with 3 outputs of 3.3V, 5V and 12V produced by MEAN WELL. Its main function is to provide power for the entire system, and 3.3V is the power supply for the light intensity digital conversion chip TSL2561. , 12V provides power for the relay, and 5V provides power for other components of the system.

In this embodiment, the temperature and humidity acquisition module selects the intelligent digital humidity sensor SHT11 produced by Switzerland Scnsirion Company, which integrates functions such as humidity sensor, signal amplification and conditioning, A/D conversion and heater into one chip, and can provide full calibration. Relative temperature and humidity value output; and with a two-wire serial interface and internal reference voltage, making the system interface design simple and fast. The illuminance acquisition module selects the light intensity digital conversion chip TSL2561 produced by TAOS Company. It is a high-speed, low power consumption, wide range, programmable and flexible configuration light intensity digital conversion chip. It converts light intensity into digital signal output. Direct I ² C interface, very convenient to connect with single chip. The _CO2 concentration acquisition module uses the solid-state electrochemical CO2 sensor chip TGS4160 produced by Figaro Corporation of Japan. The sensor has the characteristics of small size, long life, good stability and resistance to high humidity and low temperature. TGS4160 has an internal A/D conversion The output voltage signal has a linear relationship with the CO ₂ concentration value, and the output voltage signal is 0-3.0V, which is equivalent to the CO ₂ concentration of 0-3000ppm. The voltage signal output by the sensor is directly connected to P1.1/ADC1 of the STC12C5A60S2 microcontroller.

In this embodiment, the storage module selects the CMOSEEPROM storage chip AT24C64 produced by Atmel Corporation of the United States. This chip has an I ² C bus interface and a capacity of 64Kbit, which can be used to store the collected greenhouse environmental factors and various parameters set by the user, and The chip will not lose data even if it is powered off, and it is easy to use. The clock module uses a high-performance, low-power clock chip DS1302 from DALL, which is connected to the single-chip computer through a three-wire interface for synchronous data transmission. It can accurately time the year, month, day, week, hour, minute, and second. With leap year compensation function, it is powered by 5V power supply during normal operation, and can automatically switch to backup power supply when power is off to continue to provide accurate time. The liquid crystal display module adopts 12864 liquid crystal display, which can display 128×64 characters at the same time. The module has a standard font library, the peripheral circuit is simple, easy to use, and can carry out 8-bit parallel data transmission with the single-chip microcomputer. The communication module uses the chip MAX232, which is mainly used for the communication between the single-chip microcomputer and the host computer. The alarm module uses light-emitting diodes and passive buzzers, which are mainly responsible for sound alarms and light alarms. The alarm circuit is relatively simple. The sound alarm is composed of a single-chip microcomputer pin connected to a pull-up resistor, a transistor and a passive buzzer. The light alarm is composed of a light-emitting diode and a resistor.

In this embodiment, the keyboard module includes four independent keys, which respectively represent a function setting key, a parameter up key, a parameter down key, and a parameter up and down limit selection key. When working normally, the liquid crystal display is in real-time display mode, and the temperature, humidity, illuminance, CO2 concentration and time of the greenhouse are displayed on the liquid crystal display in real time. At this time, the parameter up key, parameter down key and parameter upper and lower limit selection keys are invalid. When the function selection key is pressed once, the LCD enters the temperature alarm upper and lower limit display mode; when the function selection key is pressed twice, the LCD display enters the humidity alarm upper and lower limit display mode; when the function selection key is pressed three times, the LCD display Enter the upper and lower limit display mode of illuminance alarm. When the function selection key is pressed four times, the LCD display enters the CO2 alarm upper and lower limit display mode. When the function selection key is pressed five times, the LCD display returns to the real-time display mode of normal operation. In the LCD temperature alarm upper and lower limit display mode, humidity alarm upper and lower limit display mode, illuminance alarm upper and lower limit display mode, and carbon dioxide alarm upper and lower limit display mode, you can adjust the parameter up key, parameter down key and parameter upper and lower limit selection The key is used to realize the setting of the upper and lower alarm limits of the parameters of the greenhouse control system, which has strong operational flexibility.

The working process of the simple greenhouse control system:

When the utility model is working, the microcontroller first recovers the upper and lower alarm limits of the greenhouse environmental factors saved last time from the storage module. Of course, the upper and lower alarm limits of the greenhouse environmental factors can also be set through the keyboard module. After completion, the system converts environmental factors such as temperature, humidity, illuminance and CO2 concentration in the greenhouse into corresponding electrical signals through the data acquisition module and sends them to the microcontroller module. After processing by the microcontroller, the environmental factors of the greenhouse are realized. Acquisition, storage and display. The microcontroller compares the collected environmental factor parameters with the preset alarm upper and lower limits. When the environmental factor parameters in the greenhouse exceed the preset value. The micro-controller will activate the corresponding execution output module to control it, and the system will send out sound and light alarms until the environmental parameters are adjusted to the target range. The upper computer is connected with the microcontroller module through the communication module, and can control the microcontroller to control the entire system, and jointly realize the automatic detection and control of the greenhouse. At the same time, the upper computer can also store, analyze and historically query the collected data.

The utility model has the advantages of simple structure, convenient use, low cost, and easy installation and debugging. The system can accurately collect, display, store and control various parameters such as temperature, humidity, illuminance and _CO2 concentration in the greenhouse environment in real time. And the greenhouse environment can be adjusted and controlled according to preset parameters to meet the growth needs of different plants. The utility model has strong anti-interference ability, high reliability and easy popularization.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (5)

1. A simple greenhouse control system, characterized in that it comprises a microcontroller module, a power supply module, a data acquisition module, a keyboard module, an alarm module, a liquid crystal display module, a storage module, a clock module, an execution output module, a communication module and a host machine, the micro-controller module is connected with the power supply module, data acquisition module, liquid crystal display module, keyboard module, alarm module, storage module, clock module and execution output module respectively, and the described upper computer is connected with the micro-controller through the communication module The data acquisition module includes a temperature and humidity acquisition module, an illuminance acquisition module, and a _CO2 concentration acquisition module respectively connected to the microcontroller module, and the execution output module includes a module connected to the microcontroller module. relay output module. 2. A simple greenhouse control system according to claim 1, characterized in that: the execution output module also includes a natural ventilation system, a warming system, a wet curtain fan system, and a sunshade system respectively connected to the relay output module. system, dropper system, circulation fan system, fill light system and CO ₂ generator. 3. A simple greenhouse control system according to claim 1, characterized in that: said microcontroller module adopts STC12C5A60S2 single-chip microcomputer, said power supply module adopts switching power supply, and said temperature and humidity acquisition module adopts intelligent digital temperature and humidity sensor SHT11, the illuminance acquisition module selects the light intensity digital conversion chip TSL2561, the _CO concentration acquisition module selects the solid-state electrochemical carbon dioxide sensor chip TGS4160, the storage module selects the storage chip AT24C64, and the clock module selects the clock chip DS1302, The liquid crystal display module uses a 12864 liquid crystal display, and the communication module uses a chip MAX232. 4. A simple greenhouse control system according to claim 1, characterized in that: the alarm module includes a light-emitting diode and a passive buzzer, and the buzzer is connected to the microcontroller module through a triode. 5. A simple greenhouse control system according to claim 1, characterized in that: said keyboard module includes four independent keys, representing function setting key, parameter up key, parameter down key and parameter upper and lower limit selection keys respectively .