CN205193641U - Wireless vegetable greenhouse intelligent system based on ARM - Google Patents

Abstract

The utility model relates to an ARM-based wireless vegetable greenhouse intelligent system, which includes a plurality of lower computers for data detection and output control and an upper computer for data display, data setting and data transmission, which are arranged in the vegetable greenhouse ; The lower computer includes a single-chip microcomputer and a control module connected to it, a liquid crystal display module, an alarm module, an A/D conversion module and a wireless communication module; the A/D conversion module is also connected with a temperature detection module, a humidity detection module, and a light intensity detection module It is connected with the carbon dioxide concentration detection module; the host computer includes a single-chip microcomputer and a wireless communication module connected thereto, a display module, an alarm module, a key module and a PC controller for communicating with the PC. The system provided by the utility model monitors and collects the cultivation environment of vegetable greenhouses in real time, so that each parameter index inside the vegetables meets the requirements of the optimal growth environment of vegetables, so as to ensure the normal growth of vegetables, reduce manual monitoring, and improve economic benefits.

Description

A wireless vegetable greenhouse intelligent system based on ARM

technical field

The utility model relates to the field of greenhouse systems, in particular to an ARM-based wireless vegetable greenhouse intelligent system.

Background technique

In recent years, the modernization reform of agricultural greenhouse production in my country has been advancing. In order to improve agricultural production efficiency, in addition to updating mechanical equipment, mastering the natural environment and modern management of crops are also important means to save human resources and increase crop yields. . In the "National Medium- and Long-Term Science and Technology Development Plan (2006-2020)", China clearly regards the precision operation and informatization of agriculture as a key field and a priority theme. In today's China, farmers often walk several kilometers to the fields to check crop temperature, light, soil moisture, soil pH, CO2 (carbon dioxide) concentration and other information. Due to the long walking distance, you can only go to different places, so you can't get information in time and quickly, which delays the golden management time for crops. Especially in the south, if the products with high investment, high concentration rate, high output, high price and relatively high requirements on the growth environment, such as greenhouse vegetable greenhouses and flower nursery parks, cannot collect and observe its growth information in time and make adjustments , Once crops face soil pH imbalance, insufficient light, soil drought and other problems, the growth cycle of crops may be prolonged, and production costs may increase. The more serious situation is in winter. The traditional method in China is to manually inspect the personnel every few hours during the day, but the temperature drops faster at night than during the day, and the temperature change is more difficult to predict. Especially at night, personnel need to rest. Unexpectedly, the low temperature in just a few hours is not adjusted in time, which may cause all the crops in the entire greenhouse to freeze to death or greatly reduce production, resulting in losses of tens of thousands or even hundreds of thousands of yuan. For vegetable farmers, the loss will be irreparable.

At present, the agricultural greenhouse monitoring systems in Japan, the United States, the Netherlands, Israel and other countries are relatively advanced. In Taiwan, some precious nursery flower gardens have also begun to introduce modern monitoring and management systems. However, most of these devices are similar to bus-type industrial control systems. The equipment is expensive; the wiring is cumbersome; and it needs a specially customized greenhouse framework for support; it is only suitable for high-investment construction and production of companies and groups. The current development of greenhouses in China is that greenhouses are built on a family basis, the number of greenhouses per household is small, and the investment funds are quite limited. The traditional greenhouse monitoring system based on RS485 and bus is complex and expensive. With the development of WSN technology, designing a remote wireless monitoring system that is suitable for Chinese greenhouse farmers in terms of economic cost, installation and deployment efficiency, and usage habits will help realize agricultural precision operations, improve personnel management efficiency, and increase productivity. It is of great significance to greenhouse farmers and the promotion of national agricultural modernization.

Utility model content

In view of this, the purpose of this utility model is to provide an ARM-based wireless vegetable greenhouse intelligent system, through real-time monitoring and collection of the cultivation environment of vegetable greenhouses, so that each parameter index inside the vegetables meets the requirements of the best growing environment for vegetables, so as to ensure The normal growth of vegetables and reduce manual monitoring, improve economic benefits.

The utility model is realized by the following scheme: an ARM-based wireless vegetable greenhouse intelligent system, including a plurality of lower computers for data detection and output control and a data display, data setting and data The upper computer that transmits; The lower computer includes a single-chip microcomputer and a control module connected to it, a liquid crystal display module, an alarm module, an A/D conversion module and a wireless communication module; the A/D conversion module is also connected with a temperature detection module and a humidity detection module. The module, the light intensity detection module and the carbon dioxide concentration detection module are connected; the host computer includes a single-chip microcomputer and a wireless communication module connected to it, a display module, an alarm module, a key module and a PC controller for communicating with the PC.

Further, the single-chip microcomputer in the host computer is an STM32 single-chip microcomputer.

Further, the single-chip microcomputer in the lower computer is an STC89C52 single-chip microcomputer. Because the lower computer needs a larger storage capacity, it is not necessary to expand the data and program memory if you choose a single-chip microcomputer with a larger data and program capacity. After weighing various controller chips, the STC89C52 single-chip microcomputer is finally used as the core controller. The single-chip microcomputer has strong instruction addressing and calculation functions, strong arithmetic operation function, flexible software programming, easy to realize man-machine dialogue, and can simply realize algorithm and logic control with software, and the cost is low. And its peripheral circuit is relatively complex, the anti-interference ability is ideal, the cost performance is high, and it is easy to program. The STC89C52 microcontroller is an 8051 MCU, including 16/32/64kB Flash and 1024 bytes of data RAM.

Further, the temperature detection module includes a temperature sensor for collecting temperature values; the humidity detection module includes a humidity sensor for collecting humidity; the light intensity detection module includes a light intensity sensor for collecting light intensity Sensor; the carbon dioxide concentration detection module includes a carbon dioxide sensor for collecting carbon dioxide concentration.

Further, the light intensity sensor is BH1750; the carbon dioxide sensor is MG811; the temperature sensor and humidity sensor are temperature and humidity composite sensors, and the temperature and humidity composite sensor is DHT11.

Further, the control module includes a temperature output control circuit, a humidity output control circuit, and a carbon dioxide concentration output control circuit; the temperature output control circuit, humidity output control circuit, and carbon dioxide concentration output control circuit each include a switch control circuit The relay; the light intensity control circuit includes an LED light used to indicate the light intensity. The I/O port of the single-chip microcomputer of the lower computer controls the switching function of the relay through the optocoupler output to realize the control of the output device; in addition, the single-chip microcomputer improves the output load capacity through the control of ULN2003, and realizes the PWM control of the single-chip microcomputer to the brightness of the LED light.

Further, the wireless communication module is an NRF24L01 micropower wireless communication module, which is the NRF24L01 chip of Nordic Company, and the 2.4G global development ISM frequency band is license-free, with a maximum working rate of 2Mbps, and 125 channels to meet multi-point communication and hopping High-frequency communication needs, small size about 31mm*17mm, high-efficiency GFSK modulation, strong anti-interference ability, especially suitable for wireless audio and video transmission, industrial control fields and other wireless communication needs that require a large transmission rate.

Further, both the upper computer and the lower computer include a power module for providing 5V power, and the power module includes a three-stage voltage regulator 7805, diodes, capacitors and resistors. Since the transformer can generate auxiliary AC power of about 12V, the input power of the auxiliary power supply is provided by the auxiliary coil of the 12V transformer. The input power of the voltage regulator LM7805, the output of the three-terminal voltage regulator LM7805 can be filtered by capacitors C3, C4 and capacitors C7, C8 to obtain a stable DC voltage of 5V, which can be used as a power supply for microcontrollers and LCD displays.

In the utility model, a method for realizing an ARM-based wireless vegetable greenhouse intelligent system includes the following steps:

Step S1: The lower computer uses the sensor to collect the data of light intensity, humidity, temperature and carbon dioxide concentration in the current vegetable greenhouse. The collected data is input to the single-chip computer through the A/D conversion module for processing, and then the corresponding data is displayed on the display module. The communication module sends it to the host computer;

Step S2: The upper computer receives the data signal sent by the lower computer through the wireless communication module, and displays the corresponding value on the display module, and the single-chip microcomputer in the upper computer compares the received value with the set value, if received value is not equal to the set value, then the alarm module in the upper computer sends an alarm, and sends a control signal to the lower computer through the wireless communication module, and sends the data to the PC through the PC controller to save and record the data ;

Step S3: The wireless communication module of the lower computer receives the control signal, and transmits the control signal to the single-chip microcomputer in the lower computer, and the single-chip microcomputer realizes the output control of the control module in the lower computer.

Therefore, the upper computer in the utility model can receive the communication signals of the lower computers in time-sharing, and perform corresponding analysis and processing, and finally realize the control of the multi-lower computer system by the ARM main controller.

Compared with the prior art, the system provided by the utility model collects the cultivation environment of the vegetable greenhouse through real-time monitoring, so that each parameter index inside the vegetable meets the requirements of the optimal growth environment of the vegetable, so as to ensure the normal growth of the vegetable and reduce manual monitoring, Improve economic efficiency.

Description of drawings

Fig. 1 is a schematic diagram of a system circuit module of the present invention.

Fig. 2 is a schematic diagram of the lower computer circuit module of the present invention.

detailed description

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

This embodiment provides an ARM-based wireless vegetable greenhouse intelligent system, as shown in Figure 1 and Figure 2, including a plurality of lower computers for data detection and output control and a data display, The upper computer for data setting and data transmission; the lower computer includes a single-chip microcomputer and a control module connected to it, a liquid crystal display module, an alarm module, an A/D conversion module and a wireless communication module; the A/D conversion module is also connected to the temperature The detection module, the humidity detection module, the light intensity detection module and the carbon dioxide concentration detection module are connected; the host computer includes a single-chip microcomputer and a wireless communication module connected to it, a display module, an alarm module, a key module and a PC control for communicating with the PC device.

In this embodiment, the single-chip microcomputer in the host computer is an STM32 single-chip microcomputer.

In this embodiment, the single-chip microcomputer in the lower computer is a STC89C52 single-chip microcomputer. Because the lower computer needs a larger storage capacity, it is not necessary to expand the data and program memory if you choose a single-chip microcomputer with a larger data and program capacity. After weighing various controller chips, the STC89C52 single-chip microcomputer is finally used as the core controller. The single-chip microcomputer has strong instruction addressing and calculation functions, strong arithmetic operation function, flexible software programming, easy to realize man-machine dialogue, and can simply realize algorithm and logic control with software, and the cost is low. And its peripheral circuit is relatively complex, the anti-interference ability is ideal, the cost performance is high, and it is easy to program. The STC89C52 microcontroller is an 8051 MCU, including 16/32/64kB Flash and 1024 bytes of data RAM.

In this embodiment, the temperature detection module includes a temperature sensor for collecting temperature values; the humidity detection module includes a humidity sensor for collecting humidity; the light intensity detection module includes a temperature sensor for collecting light intensity The light intensity sensor; the carbon dioxide concentration detection module includes a carbon dioxide sensor for collecting carbon dioxide concentration.

In this embodiment, the light intensity sensor is BH1750; the carbon dioxide sensor is MG811; the temperature sensor and humidity sensor are temperature and humidity composite sensors, and the temperature and humidity composite sensor is DHT11.

Among them, the brief introduction of the function of the light intensity sensor is as follows: BH1750FVI is a digital light intensity sensor integrated circuit for two-wire serial bus interface. This integrated circuit can adjust the brightness of the LCD or keyboard backlight according to the collected light intensity data. Use its high resolution to detect a wide range of changes.

The functional introduction of the carbon dioxide sensor module is as follows: MG811 has good sensitivity and selectivity to CO2, is less affected by changes in temperature and humidity, and has good stability and reproducibility.

The function introduction of temperature and humidity sensor is as follows: DHT11 digital temperature and humidity sensor is a temperature and humidity composite sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a resistive humidity sensing element and an NTC temperature measuring element, and is connected with a high-performance 8-bit microcontroller. Each DHT11 sensor is calibrated in an extremely precise humidity calibration chamber. The calibration coefficients are stored in the OTP memory in the form of a program, and these calibration coefficients are called in the sensor during the processing of the detection signal. Single-wire serial interface makes system integration easy and fast. The ultra-small size, extremely low power consumption, and the signal transmission distance can reach more than 20 meters, making it the best choice for various applications.

In this embodiment, the control module includes a temperature output control circuit, a humidity output control circuit, and a carbon dioxide concentration output control circuit; each of the temperature output control circuit, humidity output control circuit, and carbon dioxide concentration output control circuit includes a A relay to realize switch control; the light intensity control circuit includes an LED light used to indicate the light intensity. The I/O port of the single-chip microcomputer of the lower computer controls the switching function of the relay through the optocoupler output to realize the control of the output device; in addition, the single-chip microcomputer improves the output load capacity through the control of ULN2003, and realizes the PWM control of the single-chip microcomputer to the brightness of the LED light.

In this embodiment, the wireless communication module is the NRF24L01 micropower wireless communication module, which is the NRF24L01 chip of Nordic Corporation, and the 2.4G global development ISM frequency band is license-free, with a maximum operating rate of 2Mbps, and 125 channels to meet multi-point Communication and frequency hopping communication needs, small size about 31mm*17mm, high-efficiency GFSK modulation, strong anti-interference ability, especially suitable for wireless audio and video transmission, industrial control fields and other wireless communication needs that require a large transmission rate.

In this embodiment, both the upper computer and the lower computer include a power module for providing 5V power, and the power module includes a three-stage voltage regulator 7805, a diode, a capacitor and a resistor. Since the transformer can generate auxiliary AC power of about 12V, the input power of the auxiliary power supply is provided by the auxiliary coil of the 12V transformer. The input power of the voltage regulator LM7805, the output of the three-terminal voltage regulator LM7805 can be filtered by capacitors C3, C4 and capacitors C7, C8 to obtain a stable DC voltage of 5V, which can be used as a power supply for microcontrollers and LCD displays.

In this embodiment, an implementation method of an ARM-based wireless vegetable greenhouse intelligent system includes the following steps:

Step S1: The lower computer uses the sensor to collect the data of light intensity, humidity, temperature and carbon dioxide concentration in the current vegetable greenhouse. The collected data is input to the single-chip computer through the A/D conversion module for processing, and then the corresponding data is displayed on the display module. The communication module sends it to the host computer;

Step S2: The upper computer receives the data signal sent by the lower computer through the wireless communication module, and displays the corresponding value on the display module, and the single-chip microcomputer in the upper computer compares the received value with the set value, if received value is not equal to the set value, then the alarm module in the upper computer sends an alarm, and sends a control signal to the lower computer through the wireless communication module, and sends the data to the PC through the PC controller to save and record the data ;

Step S3: The wireless communication module of the lower computer receives the control signal, and transmits the control signal to the single-chip microcomputer in the lower computer, and the single-chip microcomputer realizes the output control of the control module in the lower computer.

Therefore, in this embodiment, the upper computer can receive the communication signals of the lower computers in time-sharing, and perform corresponding analysis and processing, and finally realize the control of the multi-lower computer system by the ARM main controller.

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model.

Claims (8)

1., based on a wireless green house of vegetables intelligent system of ARM, it is characterized in that: comprise a plurality of be arranged in green house of vegetables in order to Data Detection and export the host computer that the slave computer and controlled shows in order to data, data setting and data transmit; Described slave computer comprises single-chip microcomputer and coupled control module, LCD MODULE, alarm module, A/D modular converter and wireless communication module; Described A/D modular converter is also connected with temperature detecting module, humidity detecting module, intensity of illumination detection module and gas concentration lwevel detection module; Described host computer comprises single-chip microcomputer and coupled wireless communication module, display module, alarm module, key-press module and the PC controller in order to communicate with PC.

2. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: the single-chip microcomputer in described host computer is STM32 single-chip microcomputer.

3. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: the single-chip microcomputer in described slave computer is STC89C52 single-chip microcomputer.

4. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: described temperature detecting module comprises one in order to the temperature sensor of collecting temperature value; Described humidity detecting module comprises one in order to gather the humidity sensor of humidity; Described intensity of illumination detection module comprises one in order to gather the intensity of illumination sensor of intensity of illumination; Described gas concentration lwevel detection module comprises one in order to gather the carbon dioxide sensor of gas concentration lwevel.

5. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 4, is characterized in that: described intensity of illumination sensor is BH1750; Described carbon dioxide sensor is MG811; Described temperature sensor and humidity sensor are humiture compound sensor, and described humiture compound sensor is DHT11.

6. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: described control module includes temperature output control circuit, humidity output control circuit, gas concentration lwevel output control circuit and intensity of illumination control circuit; Described temperature output control circuit, humidity output control circuit and gas concentration lwevel output control circuit include one in order to realize the relay of switch control rule; Described intensity of illumination control circuit comprises one in order to represent the LED of intensity of illumination.

7. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: described wireless communication module is NRF24L01 micropower wireless communication module.

8. a kind of wireless green house of vegetables intelligent system based on ARM according to claim 1, is characterized in that: described host computer and slave computer include one in order to provide the power module of 5V power supply.