Agricultural IoT monitoring and intelligent control solutions

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1. Background

The Internet of Things is known as the third wave of the world’s information industry after computers and the Internet. The Internet of Things technology is hailed as a new economic growth point in the world. The state and government attach great importance to the development of the Internet of Things industry. Xinhua News Agency reported that In the Twelfth Five-Year Plan launched by each province, 23 provinces regard the Internet of Things as an important development goal.

The Internet of Things (The Internet of Things) refers to information sensing devices such as radio frequency identification (RFID), sensors, global positioning systems, and QR codes that are connected according to an agreed protocol, and information exchange and communication are carried out through wired or wireless networks to achieve intelligence. A network of identification, data collection, intelligent control, positioning, tracking, monitoring and management.

The application of the Internet of Things technology in agriculture can not only change the extensive agricultural operation and management methods, but also improve the prevention and control of animal and plant epidemics, ensure the quality and safety of agricultural products, and lead the development of modern agriculture.

2. Demand analysis

According to the agricultural informatization needs of Jiansanjiang Qianjin Farm, after discussion and analysis, there are mainly the following specific needs: on the one hand, automatic monitoring and intelligent control of rice seedling cultivation greenhouses, farmland irrigation and grain storage; second, agricultural information that provides agricultural technical services to farmers Service platform; the third is the hotline of agricultural experts through multiple communication methods such as voice, SMS, MMS, etc.; the fourth is the online trading service platform for agricultural businesses.

1. Monitoring and intelligent control of rice seedling growing shed

At present, Jiansanjiang Qianjin Farm mainly grows rice, and rice seedlings need to be raised in the greenhouse in advance in the spring of each year. Rice seedlings have strict requirements on temperature, humidity, light, ventilation, and irrigation. In the past, they used manual experience. operate. Not only the efficiency is low, but also the accuracy is not enough.

Collecting various data of greenhouse environmental indicators through sensors, and centralizing it to the data storage platform, on the one hand, you can fully grasp the environmental conditions of each greenhouse, on the other hand, you can view the specific development of seedlings through high-definition video, and on the other hand, you can set thresholds. , Realize automatic management such as automatic ventilation, lighting, and irrigation.

2. Agricultural Information Service Platform

Mainly to provide farmers with a wealth of information content and services, including agricultural laws and regulations, agricultural products transactions, labor information, price inquiry, agricultural technology, market trends, meteorological information, etc.

3. Service hotline for agricultural experts

The main purpose is to build a bridge of communication between farms and farmers. Farmers can seek help from agricultural experts through hotline, MMS, SMS, and problems encountered in agricultural production. At the same time, they can obtain timely agricultural production through these communication methods. information.

4. Agribusiness online trade service platform

Mainly serving farmers, providing online publicity and promotion of agricultural products, online online physical display, transaction matching services, etc.

3. Nokia Siemens Technology Implementation Plan

(1) Greenhouse monitoring and intelligent control

1 Overview
The monitoring and intelligent control solution for rice seedling growing greenhouses uses wireless sensors such as light, temperature, and humidity to collect temperature, humidity signals and environmental parameters such as light, soil temperature, soil water content, CO concentration and other environmental parameters in the crop greenhouse in real time, and automatically turn on Or close the designated equipment (such as remote control of watering, opening and closing of roller shutters, etc.). At the same time, monitoring equipment such as cameras are arranged on the greenhouse site to collect video signals in real time. Through the computer or 3G mobile phone, the user can observe the on-site situation anytime and anywhere, check the data such as on-site temperature and humidity, and control the remote intelligent adjustment of designated equipment.

2. System architecture design
(1) Overall structure
The overall architecture of the system is divided into four parts: sensor information collection, video monitoring, intelligent analysis and remote control.

(2) Technical architecture

(3) System composition

data collection systems. Mainly responsible for the collection and control of data such as light, temperature, humidity, soil moisture content and video in the greenhouse. The upload of the data sensor adopts two modes: ZigBee and Rs485. According to different transmission methods, the greenhouse field deployment is divided into two types: wireless version and wired version. The wireless version uses the ZigBee sending module to transmit the value of the sensor to the zigBee node; the wired version uses a cable to transmit the data to the Rs485 node. The wireless version has the advantages of flexible deployment and convenient expansion; the wired version has the advantages of high-speed deployment and stable data.

Video capture system. The system uses high-precision network cameras, and the system’s definition and stability parameters are in line with relevant domestic standards.
Control System. The system is mainly composed of control equipment and corresponding relay control circuit. Through the relay, various agricultural production equipment can be controlled freely, including: spraying, drip irrigation and other spraying systems, and rolling curtains, fans and other air conditioning systems.
Wireless transmission system. The system mainly transmits the data collected by the equipment to the server through the 3G network, and supports the IPv4 live network protocol and the next-generation Internet IPv6 protocol in the transmission protocol.
Data processing system. The system is responsible for the storage and information processing of the collected data, and provides users with analysis and decision-making basis. Users can make inquiries through terminals such as computers and mobile phones anytime and anywhere.

(4) Network topology
The system adopts multiple standards in terms of network. The long-distance communication adopts 3G wireless network, and the short-distance transmission adopts the combination of wireless ZigBee mode and wired Rs485 mode to ensure the stable operation of the network system.

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