Agricultural Reclamation Base Intelligent Control System Wireless Coverage Private Network Ixelles
The state-owned farms distributed throughout the country, providing a large number of high-quality agricultural and sideline products to the market, is the main force of China's agricultural development.
With the gradual deepening of reform and opening up, China's agricultural and animal husbandry products market is facing tremendous pressure from developed countries' products in the international market, and it is urgent to increase the automation level of its own production process in order to increase labor productivity.
Taking the land reclamation system of Xinjiang, Heilongjiang, Hebei, and Shandong provinces as the representative, China's agricultural reclamation base took the lead in introducing the integrated system of water, fertilizer, and medicine for drip irrigation, which was promoted and applied in Datian.
The control system consists of four parts.
1, a variety of sensors distributed throughout Daejeon
2. Water supply pipelines and various control valves and pump stations distributed throughout Daejeon
3, two-way wireless network of sensor and control valve, pump station and control center data
4, Central Control Center Expert System
There is also a technology that is built on public mobile communication networks, such as GPRS or CDMA, for the realization of a wide range of data networking. However, since the data security of the public network is always criticized by everyone, it is not suitable for a dedicated control system with extremely high reliability requirements. Otherwise, once a problem arises, it will cause major losses to the production of the farmland base, and in severe cases it may cause a large area of ​​production cuts.
iAxel's wireless network and system integrators collaborated with the Informatization Department of the Agricultural Reclamation Base and successfully implemented the control system using WLAN wireless network technology. The project covers an area of ​​180,000 mu. The furthest land is about 40 kilometers away from the control center. The project used 27 carrier-grade wireless AP bridges provided by the iAxel wireless network and 198 wireless client products to control 3564 pump station solenoid valves and corresponding sensors. Each wireless AP covers an area of ​​more than 6,000 mu and achieves long-range and wide-range data signal coverage and networking.
The 27 wireless APs in the system pass through multi-level point-to-multipoint wireless bridges and gradually converge to the master control center to access the server LAN of the center. Each wireless AP covers nearly 6,000 acres of land area, and is designed to access 7 to 8 wireless clients at the same time, providing high-bandwidth two-way communication links, and at the same time, it reserves enough bandwidth capacity for future expansion of field video surveillance systems. .
Multiple sensors corresponding to each pump station collect soil data collected in real time, such as salinity, humidity, and temperature data, and access the wireless AP through a wireless client, and then access to the wireless AP via multiple wireless bridges. Central Control Center LAN. The central server expert system reads the soil data from each sensor, calculates the control strategy through the expert system, and then obtains the control strategy, and then transmits the control command to the electromagnetic valve controller of each pumping station through the multi-level wireless bridge, the wireless AP, and the wireless client. After receiving the instruction, the solenoid valve controller executes the instruction to drive the solenoid valve to complete the complete sampling and control process.
iAxel wireless network's carrier-class AX9800NAA series 802.11n wireless APs and wireless bridges and AX9800NEA series wireless client products adopt a totally sealed high-reliability structure design to meet the harsh conditions of the field. Such as alpine, high temperature, dust storms, snow storms, heavy rain and other bad weather. AX9800 series wireless network products adopt green environmental protection and low power consumption design, and the power consumption is between 1W and 5W, making it possible to use various low-cost solar power supplies for field node equipments, which greatly reduces the investment intensity of the owners.
iAxel wireless network products support the industry's most advanced and secure AES data encryption system, as well as an access control mechanism through MAC address binding, which greatly improves the security level of wireless networks. It provides the highest level of safety performance for the owner's agricultural base intelligent control wireless network, and lays a solid foundation for ensuring production safety.
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