CN211909865U - An intelligent flower maintenance system - Google Patents

Abstract

The utility model relates to an intelligent flower maintenance system, which comprises a Zigbee data acquisition terminal, a central gateway control unit, a Web server, a final execution unit and a client; the Zigbee data acquisition terminal comprises Zigbee nodes, and the Zigbee nodes are respectively connected with a soil temperature sensor, a soil humidity sensor, a carbon dioxide sensor, an illumination sensor and a soil conductivity sensor; the central gateway control unit comprises a Zigbee coordinator, a main control chip, a display screen, an NB-IOT communication module and an execution unit, wherein each Zigbee node is connected with the input end and the output end of the Zigbee coordinator, the input end and the output end of the Zigbee coordinator are connected with the main control chip, the input end and the output end of the main control chip are connected with the Web server through the NB-IOT communication module, and the output end of the main control chip is respectively connected with the display screen and the execution unit. This device waters the fertilization through the collection and the automatically regulated of the growth environmental parameter to the flowers plant, has realized intelligent flowers maintenance mode.

Description

An intelligent flower maintenance system

technical field

The utility model relates to the technical field of plant intelligent maintenance, in particular to an intelligent flower maintenance system.

Background technique

With the development of intelligent technology, flower farming is becoming more and more intelligent maintenance. According to relevant information, the existing smart devices on the market at home and abroad are used in flower maintenance. For example, CN206671924U discloses an intelligent plant maintenance management control system based on the Internet of Things technology, which includes a data acquisition center, a control center, a user terminal, and peripheral execution equipment. The data collection center transmits the collected physical data volume of soil temperature and humidity, air temperature and humidity, light intensity, and CO2 concentration to the control center, and the control center processes and judges through preset thresholds, controls the opening and closing of peripheral execution equipment, and controls the plant. Carry out refined planting management of supplementary light, humidification, irrigation and heat preservation. By logging into the terminal device, the administrator can view the environmental data of plant growth and growth pictures at various stages, receive early warning information of cold wave, high temperature and abnormal conditions, and make remote processing and network sharing. However, from the perspective of application and device functions, the above systems have the following shortcomings: the application mode is relatively simple, the scalability is not strong, and the precision of data collection needs to be strengthened.

Utility model content

The technical problem to be solved by the utility model is to provide an intelligent flower maintenance device with more precise data collection and more precise management.

In order to solve the above technical problems, the utility model discloses an intelligent flower maintenance system, which includes a Zigbee data acquisition terminal, a central gateway control unit, a Web server, a final execution unit and a client; the Zigbee data acquisition terminal includes at least one Zigbee Nodes, each Zigbee node is respectively connected with soil temperature sensor, soil moisture sensor, carbon dioxide sensor, light sensor, soil conductivity sensor; the central gateway control unit includes Zigbee coordinator, main control chip, display screen and NB-IOT communication Module, each Zigbee node is connected to the input end and output end of the Zigbee coordinator, the input end and output end of the Zigbee coordinator are connected to the main control chip, and the input end and output end of the main control chip are both communicated with NB-IOT The module is connected, and the output end of the main control chip is connected to the display screen; the input end and the output end of the Web server are connected with the NB-IOT communication module and the client; the final execution unit includes at least one actuator, each The actuator includes two electromagnetic relays, a water pump and a nutrient pump respectively connected with one of the electromagnetic relays, and the input end of the electromagnetic relay is connected with the main control chip.

The above scheme is preferably, each Zigbee node is also connected with the ultrasonic sensor of the nutrient tank and the ultrasonic sensor of the water tank respectively; the executive mechanism also includes a nurturing tank alarm and a water tank sound and light alarm, the nutrient tank alarm and the water pump sound and light alarm. The input terminals are all connected with the main control chip.

Preferably, in the above solution, the actuator further includes a light alarm, and the input end of the light alarm is connected to the main control chip.

Preferably, in the above solution, the Web server includes a terminal data table real-time display module, a sensor threshold setting module, a control terminal command input module, and a terminal name modification module.

Preferably, in the above solution, the soil moisture sensor is composed of an aluminum chloride resistance humidity sensor connected to a balance bridge circuit.

Preferably, in the above solution, the soil temperature sensor and the soil conductivity sensor are composite soil conductivity sensors, and the composite soil conductivity sensor can measure soil conductivity and soil temperature at the same time.

Preferably, in the above solution, the illumination sensor is a TEMT6000 illumination sensor chip.

Preferably in the above solution, the carbon dioxide sensor is a thermally conductive carbon dioxide sensor.

Preferably, in the above solution, the client includes a PC client and a mobile phone client.

Compared with the prior art, the utility model has the following advantages:

1. This device realizes the optimization of flower maintenance mode by collecting the growth environment parameters of flowers and plants and automatically adjusting watering and fertilization, which greatly facilitates people's maintenance of flowers, and can greatly save manpower in large-scale flower maintenance. Material resources are convenient for users in ordinary home maintenance and reduce the threshold for flower maintenance.

2. The Zigbee data acquisition terminal makes the device more precise in data acquisition, and with the high-performance main control chip combined with its internal maintenance data, the flower maintenance is more refined.

3. The data interaction response between Zigbee data acquisition terminal and gateway data is fast and stable, and the web server can also store data and send instructions in time.

Description of drawings

Fig. 1 is the overall block diagram of the utility model.

Detailed ways

In order to make the purpose and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

The utility model discloses an intelligent flower maintenance system, as shown in FIG. 1 , which includes a Zigbee data acquisition terminal, a central gateway control unit, a Web server, a final execution unit and a client.

The Zigbee data acquisition terminal includes a ZigBee protocol stack structure and a hardware composition structure, wherein the ZigBee protocol stack structure is a plurality of Zigbee nodes, and the hardware composition structure includes a soil temperature sensor, a soil moisture sensor, a carbon dioxide sensor, Light sensor, soil conductivity sensor, in which soil temperature sensor, soil moisture sensor and soil conductivity sensor are installed in the soil where flowers are grown, and are used to monitor the temperature, humidity and conductivity of flower soil respectively; carbon dioxide sensor and light sensor are installed in In the flower planting environment, such as in the flower planting shed, it is used to monitor the carbon dioxide concentration and illuminance of the flower planting environment. The function of the hardware structure is to collect the data of the flower growth environment. The function of the ZigBee protocol stack structure is to wirelessly communicate with the ZigBee coordinator of the central gateway control unit after the network is successful. The Zigbee coordinator and the main control chip STM32F1032ET6 use serial communication. .

As a preferred embodiment, the hardware structure is mainly composed of CC2530 chip and peripheral connection circuit, soil moisture sensor, soil temperature sensor, soil conductivity sensor, carbon dioxide sensor, light sensor, nutrient tank ultrasonic sensor and water tank ultrasonic sensor. The CC2530 chip detects the input voltage value of each sensor by configuring its peripherals and opening the corresponding ADC acquisition channel. After calculation by its internal operation unit, various environmental parameter values can be obtained. Its ADC supports 7 to 12 bits of resolution, and the measurement accuracy High, ensuring the accuracy and timeliness of data collection. The CC2530 control chip in this device adopts the golden unit ZigBee protocol stack of Texas Instruments, which provides a powerful and complete ZigBee solution.

As a preferred embodiment, for the monitoring of soil humidity, the soil humidity sensor uses an aluminum chloride resistance humidity sensor connected in a balance bridge circuit. When the soil humidity changes, the aluminum chloride resistance humidity sensor is used. The resistance value of the sensor will also change, the bridge circuit is unbalanced, and a voltage value is generated. The CC2530 chip turns on the ADC channel to collect the voltage and obtains the soil moisture value after conversion by the conversion formula.

As a preferred embodiment, for the monitoring of soil temperature and soil conductivity, the soil temperature sensor and soil conductivity sensor use a composite soil conductivity sensor, which can measure soil conductivity and soil temperature at the same time. When the soil conductivity is greater than 15%, the soil conductivity has a good exponential function relationship with the sensor output voltage. The level of soil conductivity contains a wealth of information on the physical and chemical properties of the soil, from which we can know whether the soil fertility is suitable. The soil conductivity sensor uses the current-voltage four-terminal method to monitor the soil conductivity in real time. The terminal interface communicates with the CC2530 chip through the ADC channel, and transmits the collected soil conductivity and soil temperature values to the CC2530 chip.

As a preferred embodiment, for the monitoring of illuminance, the illumination sensor adopts the TEMT6000 illumination sensor chip, which can convert optical signals (infrared, visible and ultraviolet laser light) into electrical signals, and the CC2530 main control chip detects The output voltage value can be obtained by the conversion formula to obtain the current intensity of light received by the plant.

As a preferred embodiment, for the monitoring of carbon dioxide concentration, the carbon dioxide sensor adopts a thermal conductivity carbon dioxide sensor, which is made according to the principle that the total thermal conductivity of carbon dioxide gas changes with the content of the gas to be analyzed. The components are paired to form the two arms of the bridge. When the sensor encounters carbon dioxide gas, the resistance of the detection element becomes smaller. When the sensor encounters non-carbon dioxide gas, the resistance of the detection element becomes larger (air background). The bridge outputs a voltage variable, which varies with the gas concentration. The increase is proportional to the increase, and the compensation element acts as a reference and temperature compensation. The final output voltage variable is detected by the ADC interface of the CC2530 main control chip, which can detect the carbon dioxide concentration in the surrounding environment of the plant in real time.

The ZigBee protocol stack structure includes a series of ZigBee communication standards. The CC2530 chip of the Zigbee data acquisition terminal communicates with the underlying sensor to perform normal data transmission and reception according to this standard. The Zigbee protocol stack has integrated the protocols defined by each layer, implemented it in the form of functions, and provided an API (application layer), which can realize its internal networking by directly calling the API layer, and configure the peripherals at the bottom of the CC2530 chip. After that, the ZigBee coordinator can receive the sensor value of the Zigbee data acquisition terminal, and transmit the data to the main control chip STM32F103 through serial communication. The ZigBee node execution process is self-starting and system initialization after the ZigBee data acquisition terminal and ZigBee coordinator are powered on. After the initialization is completed, the ZigBee protocol stack is started and the network is searched by itself. After the network is successful, the instruction cycle task is executed and the sensor data is collected. And package it into data packets, and send the collected sensor data to the ZigBee coordinator every 3S, and the ZigBee coordinator communicates with the main control chip STM32F103 through serial communication.

The central gateway control unit includes a power supply module, a Zigbee coordinator, a main control chip STM32F103, an OLED display screen and an NB-IOT communication module, each Zigbee node is connected to the input and output ends of the Zigbee coordinator, and the The input end and the output end are connected with the main control chip, the input end and output end of the main control chip are connected with the NB-IOT communication module, and the output end of the main control chip is connected with the display screen. The working voltage of the power supply module is 220V AC. The AC transformer is used to convert 220V into low-voltage AC, and then it is converted into DC through a bridge rectifier MB6S chip and capacitor filtering. It is used with 3.3V DC and 5V DC to control the electromagnetic relay of water pump and nutrient pump.

As the first node device of the network, the Zigbee coordinator is mainly responsible for the establishment and parameter configuration of the network, and is also responsible for transmitting data to the main control chip STM32F103. The two steps of forming a network are mainly network initialization and node joining the network: network initialization First, determine the ZigBee network coordinator, and detect whether there is a ZigBee network coordinator in the network by actively scanning and sending a beacon request command; if no beacon is detected within the scanning period, it will take itself as the network coordinator and continue The beacons are generated and broadcast out; then channel scanning is performed, energy detection is performed on the specified channel or default channel to avoid possible interference, and those channels whose energy value exceeds the allowable level are discarded, and then the remaining channels are actively scanned, To check whether there are other ZigBee networks in the area; after completing the active scan, you can obtain the network identifiers of the existing ZigBee networks in the area where the device is located. So far, the network initialization of the device is basically completed.

Another function of the ZigBee coordinator is to start the Zigbee wireless network and wait for the terminal node or routing node to join the successfully established network. Finally, after the internal networking of the ZigBee node and the summary of data transmission and reception, the ZigBee coordinator obtains the sensor data packets of the ZigBee node, and transmits the sensor data packets to the main control chip STM32F103STM32 through the serial port. The function of the main control chip STM32F103 is to summarize the sensor data, analyze and process the sensor data, store the best flower maintenance information, and control the water pump and feed pump according to the current environmental parameters of the flowers.

The NB-IOT communication module is responsible for the communication between the central gateway control unit and the Web server. In this system, the NB-IOT communication module is directly deployed in the GSM network, and the M5310-A module in the NB-IoT series is used as the radio frequency module to exchange data with the dedicated NB-IoT IoT card, and finally pass through the 800MHz radio frequency antenna. The LwM2M (LightweightMachine-To-Machine) protocol is connected to the China Mobile Internet of Things platform. The lightweight LwM2M protocol for IoT applications in cellular-based narrowband IoT scenarios has the characteristics of wide coverage, multiple connections, low speed, low cost, low power consumption, and excellent architecture. For good power supply performance, a low ESR 100μF tantalum capacitor and 0.1μF, 100pF, 22pF filter capacitors are connected in parallel with the power input end of the M5310-A module; in the circuit design of the RF antenna, for PCB traces Use professional impedance simulation calculation tools to control the impedance of the RF signal line to 50Ω, and reserve a π-type matching circuit, which can more easily adjust the RF performance and ensure that the RF signal is good and reliable. The OLED display communicates with the main control chip STM32F103STM32 to display the current soil temperature, humidity and soil fertility in real time.

The work flow of the central gateway control unit is: after the power is turned on, the control unit starts to initialize, and after the ZigBee coordinator and the ZigBee data acquisition terminal form a network, they start to receive data from the ZigBee node. The ZigBee coordinator integrates and packages the ZigBee node data and sends the data to the main control chip STM32ZET6 through serial communication. The main control chip STM32ZET6 is started through the NB-IOT communication module and automatically connected to the China Mobile Internet of Things platform. The data is uploaded to the platform in real time, and the platform is connected to the web server at the same time. The web server is stored in the database. Data can be viewed in real time. The main control chip STM32ZET6 will also search for the best growth state of the corresponding flowers in its storage unit. Combined with the current flower environment parameters, it will issue corresponding instructions to the water pump and nutrient pump of the final execution unit, and finally achieve the function of intelligent control.

Both the input end and the output end of the Web server are connected with the NB-IOT communication module and the client. The web server is an Alibaba Cloud server, and the central gateway control unit communicates with the web server through sockets to realize data exchange. After data interaction inside the Alibaba Cloud server, use PHP and HTML for website development and display data. There are four display pages for data display, which are real-time display of terminal data table, sensor threshold setting, control terminal command input and terminal name modification.

The final execution unit includes at least 1 actuator, each actuator includes 2 electromagnetic relays, and a water pump and a nutrient pump respectively connected to one of the electromagnetic relays, a nutrient tank alarm, a water tank sound and light alarm and a light alarm . The input ends of the nutrient tank alarm, the sound and light alarm of the water tank and the light alarm are all connected with the main control chip, and the input end of the electromagnetic relay is connected with the main control chip. The final execution unit is directly dispatched by the central gateway control unit, and the low-voltage electromagnetic relay is used to directly control the stop or start of the water pump and the nutrient pump according to soil moisture, soil conductivity and preset values; through the monitoring of carbon dioxide sensors and light sensors, when plants When there is a lack of light for a long time or the carbon dioxide concentration is not suitable, the final execution unit can also activate the light alarm in time to remind the user to adjust and supplement, and notify the client. The final execution unit is also directly dispatched by the central gateway control unit. Through the monitoring of the ultrasonic sensor of the nutrient tank and the ultrasonic sensor of the water tank, when the stock of the nutrient tank and the water tank is less than the preset value, the alarm of the nutrient tank and the sound and light alarm of the water tank are activated to remind Users can supplement nutrients and water, and can also directly activate the external nutrient tank and water valve to supplement the nutrient tank and water tank.

The main work flow of the utility model is as follows:

After the Zigbee coordinator in the central gateway control unit is started, the Zigbee network is established, and the Zigbee data collection terminal nodes are waiting for networking. After the successful networking, the nodes automatically transmit the collected data to the Zigbee coordinator in the central gateway control unit. Zigbee After the coordinator integrates the data, it transmits the data to the main control chip STM32F103ZET6 through the serial port according to a certain period of time. After the data is analyzed and processed by the main control chip processor, the data is transmitted to the web server through the NB-IOT communication module, and the soil temperature and humidity, the current light environment, the carbon dioxide content around the plants and the soil conductivity are displayed in real time on the PC client and mobile phone client. At the same time, the web server obtains the flower maintenance data that matches the environmental data, and converts it into maintenance instructions and sends it to the central gateway control unit. The central gateway control unit directly controls the final execution unit, and directly controls the water pump and nutrients through the low-voltage electromagnetic relay. Stop and start the pump.

The above embodiments are only specific examples for further detailed description of the purpose, technical solutions and beneficial effects of the present invention, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement, etc. made within the scope of the disclosure of the present invention are all included in the protection scope of the present invention.

Claims (9)

1. an intelligent flower maintenance system, is characterized in that: comprise Zigbee data acquisition terminal, central gateway control unit, Web server, final execution unit and client; The Zigbee data collection terminal includes at least one Zigbee node, and each Zigbee node is respectively connected to a soil temperature sensor, a soil moisture sensor, a carbon dioxide sensor, a light sensor, and a soil conductivity sensor; The central gateway control unit includes a Zigbee coordinator, a main control chip, a display screen and an NB-IOT communication module, and each Zigbee node is connected to the input end and output end of the Zigbee coordinator, and the input end and output end of the Zigbee coordinator are connected. Both are connected with the main control chip, the input end and output end of the main control chip are connected with the Web server through the NB-IOT communication module, and the output end of the main control chip is connected with the display screen; The input end and the output end of the Web server are all connected with the NB-IOT communication module and the client; The final execution unit includes at least one actuator, each actuator includes two electromagnetic relays, and a water pump and a nutrient pump respectively connected to one of the electromagnetic relays, and the input end of the electromagnetic relay is connected to the main control chip. 2. a kind of intelligent flower maintenance system according to claim 1, is characterized in that: each Zigbee node is also connected with the ultrasonic sensor of the nutrient tank and the ultrasonic sensor of the water tank respectively; the executive mechanism also comprises a nurturing tank alarm and a water tank sound and light alarm The input ends of the nutrient tank alarm and the water pump sound and light alarm are connected to the main control chip. 3 . An intelligent flower maintenance system according to claim 1 , wherein the actuator further comprises a light alarm device, and the input end of the light alarm device is connected to the main control chip. 4 . 4. A kind of intelligent flower conservation system according to claim 1, is characterized in that: described Web server comprises terminal data table real-time display module, sensor threshold value setting module, control terminal instruction input module and terminal name modification module. 5 . The intelligent flower maintenance system according to claim 1 , wherein the soil moisture sensor is composed of an aluminum chloride resistance humidity sensor connected to a balance bridge circuit. 6 . 6. The intelligent flower maintenance system according to any one of claims 1-4, wherein the soil temperature sensor and the soil conductivity sensor are composite soil conductivity sensors, and the composite soil conductivity sensor can Simultaneously measure soil conductivity and soil temperature. 7 . The intelligent flower maintenance system according to claim 1 , wherein the light sensor is a TEMT6000 light sensor chip. 8 . 8 . The intelligent flower maintenance system according to claim 1 , wherein the carbon dioxide sensor is a thermal conduction carbon dioxide sensor. 9 . 9. An intelligent flower maintenance system according to any one of claims 1-4, characterized in that: the client includes a PC client and a mobile phone client.

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