"1. Overview
China is a large agricultural country. At present, there are more and more agricultural greenhouses in the vast rural areas. In recent years, with the development of China's agriculture and rural economy, the mode of agricultural production has gradually changed from traditional extensive management to modern intensive management. As a demonstration window of modern intensive agriculture and high-tech application, agricultural science and technology demonstration park came into being. With the progress of science and technology, the structural grade of greenhouse is gradually improving. It is an urgent need for the majority of greenhouse crop producers to build a greenhouse intelligent monitoring system that can improve the yield and quality of crops in greenhouse, reduce production costs and reduce the labor intensity of workers.
The agricultural greenhouse intelligent monitoring system collects the environmental parameters such as air temperature, humidity, light, soil temperature and soil moisture in the agricultural greenhouse in real time, makes real-time intelligent decisions according to the needs of crop growth, and automatically turns on or off the specified environmental regulation equipment. The deployment and implementation of the system can provide scientific basis and effective means for automatic monitoring of agricultural ecological information, automatic control and intelligent management of facilities.
2. Characteristics
① Realize the collection of soil temperature, air temperature, humidity, light, carbon dioxide, soil moisture and other information;
② Kl-h1100 Internet of things gateway, as a data receiver and collector, has dual communication of Ethernet and 3G, which is convenient to upload data
③ ZigBee intelligent ad hoc network mechanism adopts 2.4GHz frequency communication, with long transmission distance and strong penetration;
④ There are many power supply modes such as battery, municipal power and solar energy, and the sensor distribution is not limited by the power supply;
⑤ Stable wired transmission control, free control of rolling shutter machine, skylight and other equipment;
2. Specific implementation scheme
1. Overview
This example is Tianjin greenhouse monitoring system. There are 13 ordinary solar sheds here, each with 240 solid walls in the east-west direction, a steel frame structure facing south, and covered with plastic film. The greenhouse is mainly for planting vegetables, which mainly realizes data monitoring, and reasonably controls the roller shutter system and drip irrigation system according to the data. Realize modern agricultural planting, save manpower and increase benefits.
2. Site environment
The 13 greenhouses are arranged in two rows. As shown in the figure, each greenhouse is 10m long and 5m wide. The center distance between No. 1 and No. 2 greenhouses is 10m, and the spacing between the two rows of greenhouses is 6m. Because the greenhouse environment is good and the AC 220V power supply is sufficient, all sensors adopt routing equipment. The advantage of routing type is that the connection between the sensor and the Internet of things gateway is more convenient and the network is better. The disadvantage is that there is no sleep function and there must be external power supply.
3. Main equipment
① Kl-h1100 Internet of things gateway 1
② Jzh-026-12 13 wireless sensors for temperature, humidity, soil temperature, soil moisture and carbon dioxide
③ Jzh-002-12 13 illuminance wireless sensors
④ Jzh-000-12 three empty node routing sensors
⑤ Several environmental protection boxes
Note: all sensors are routing sensors
4. Distribution scheme
① Place the kl-h1100 Internet of things gateway in the receiving box on the billboard.
② Jzh-002-12 and jzh-026-12 wireless sensors 2 are only one group and placed in 13 greenhouses respectively.
③ Place the jzh-000-12 empty node routing sensor in the protective box at the upper end of the shed of No. 7, No. 9 and No. 11.
5. Hardware installation
① A 6-point or 4-point steel pipe from the ground to the ceiling shall be erected in the center of the greenhouse, and there shall be a 220VAC power socket and a 400 kV power socket 2 meters away from the ground × 400mm flat plate is used to install the sensor. Two holes with a diameter of 5.3mm are punched at the center of the flat plate. The hole size diagram of the sensor is as follows:
② Outdoor needs to be equipped with a 300mm × There are 3 300 mm sheet iron boxes (protective boxes), one 220VAC power socket inside, one on the side, one through hole 1 / 3 from the upper part, with a diameter of 7 mm, which is connected to the antenna. The opening size of the inner plate is shown in the figure above, which can be used to fix the wireless sensor. Installed above No. 7, No. 9 and No. 11 sheds respectively.
③ A 300mm is also required above the billboard position × 300mm protective box, with a 220VAC power socket inside, one on the side and a through hole 1 / 3 from the upper part, with a diameter of 7mm, which is connected to the antenna. The opening size required at the middle and upper part of the inner plate is Φ 4 two holes, with a spacing of 110cm, are used to insert screws and hang the gateway.
④ Install the device to the specified location.
6. Protection of equipment
In practical application, because the gateway and sensor are not completely sealed, a protective box is needed to protect the equipment.
① Fabrication of protective box
The size of the protection box can be determined according to the size of the equipment. If only one sensor needs to be protected in a protection box, the box can be appropriately smaller. If multiple sensors are required at a monitoring point, the box can be appropriately enlarged. There are two hoist holes on the back of the gateway and sensor, which can be used to hang on the three-dimensional wall. Therefore, two fixed suspension points need to be installed inside the box to complete the suspension of the equipment. Because the signal transmission is affected in the box, it is necessary to use the antenna extension cable to lead the antenna to the outside of the box to solve the signal transmission problem.
② Specification requirements for antenna extension cable
The antenna extension line adopts 2.4G feeder, the extension line distance is no more than 20cm, and the adapter is Sam to smaky.
Note: the sensor in the box is jzh-0 series sensor. The sensor in the box can also be replaced with a gateway, or two devices can be placed in the box.
7. ZigBee networking
See the instructions of kl-h1100 Internet of things gateway for details.
① Gateway login
First, connect the gateway and PC directly with the cross network cable, open the web page and enter ip192.168.0.222 to enter the web configuration page of the gateway and the gateway configuration page.
Login page: user name: admin Password: admin
② Set network parameters (time)
③ Set gateway network frequency and network ID
When the network frequency points are "0x04", "0x09", "0x0e" and "0x0f", the network condition is the best and the interference sources are the least. This network frequency point and network ID are set to "0x09" and "0x0020".
③ Set sensor network frequency and network ID
Use the manual operator to set the sensor network frequency point and network ID as 0x09 and 0x0020 respectively. For detailed setting steps, see "jzh-pzq ZigBee network configurator operation manual".
④ Sensor network access
View the sensor in the new node list and configure the network access.
In the node mapping table, set the device address of the sensor (each sensor cannot be repeated), the device name is customized by the customer, and the drop time is two to three times the sensor active reporting time. For example, the sensor active reporting time is 60 seconds, and the gateway drop time can be set to 180 seconds. See the sensor manual for the setting of sensor active reporting time.
Repeat the above steps until all sensors are connected to the network.
After ZigBee network configuration, return to ZigBee network parameters page and save ZigBee network.
The monitoring value of the sensor can be viewed on the node data display page.
⑤ Gateway service mode and 3G parameter setting
Due to the relatively good greenhouse environment, sufficient AC 220V power supply and convenient Ethernet access, the gateway can give priority to Ethernet access or 3G access. The working mode can be set to client mode.
Server mode:
Client mode
8. Control system
The control system can be realized by wired controller. Customers can apply the control system to complete the control of greenhouse equipment according to the actual situation.
9. Software monitoring
① Users can develop host computer software based on Modbus TCP communication protocol.
Users can write host computer software based on the secondary development of database., Read the full text, technical section
Solution for agricultural greenhouse based on kl-h1100 Internet of things gateway
In the era of Internet of things, 5g and AI will be the two main driving engines in the future IOT world
Four examples of Internet of things toys putting children's safety and privacy at risk
The massive popularization and rapid development of Internet of things technology will lead to the outbreak of smart business species
How can edge computing promote the development of animal networking and download enthusiast app
Create an electronic circle of your contacts
Pay attention to wechat of electronic enthusiasts
Interesting and informative information and technology dry goods
Focus on enthusiast class
Lock in the live broadcast of the latest course activities and technologies and collect them
0 collections
Share:, comment
Lin Chaowen PCB Design: pads tutorial, pads video tutorial, Zheng Zhenyu teacher: Altium designer tutorial, Altium designer video tutorial, Zhang Fei actual combat electronic video tutorial, Zhu Youpeng teacher: Hisilicon hi3518e tutorial, hi3518e video tutorial, Li Zeng teacher: signal integrity tutorial, high-speed circuit simulation tutorial, Huawei Hongmeng system tutorial, harmonyos video tutorial, saisheng: EMC design tutorial, EMC video tutorial Mr. Du Yang: STM32 tutorial, STM32 video tutorial, Tang zuolin: basic C language tutorial, basic C language video tutorial, Zhang Fei: Buck Power tutorial, buck power video tutorial, punctual atom: FPGA tutorial, FPGA video tutorial, Mr. Wei Dongshan: embedded tutorial, Embedded video tutorial Zhang Xianfeng: C language basic video tutorial Xu Xiaogang: Modbus communication video tutorial Wang Zhentao: NB IOT development video tutorial mill: FPGA tutorial, zynq video tutorial c language video tutorial linux driver development video tutorial Zhu Youpeng: u-boot source code analysis video tutorial harmonyos,
Press and hold the slider and drag to the far right
Learn about new features
Published, relevant recommendations
Environmental protection monitoring, on-line monitoring of plant flue gas emission
Published on October 21, 2018 13:17
•
101 readings
How to select the appropriate Internet of things gateway?
Steven Fowler, CEO of jivoo, an Atlanta based Internet of things integrator, said that today, gateways have many forms
Published at 16:21, October 18, 2018
•
592 readings
Overview and system design of Internet of things gateway
The networking of the Internet of things adopts a layered communication system architecture, including perception extension system, transmission system, business operation management system and various applications. In different layers
Published at 15:43, September 12, 2018
•
564 readings
Xunzhun technology releases high compatibility IOT gateway, Internet of things applications such as Tiger
Published at 15:43, July 17, 2018
•
183 readings
Our other product:
